Fixed fly jib and crawler crane

Abstract

The invention discloses a fixed auxiliary arm and a crawler crane. The fixed auxiliary arm comprises a main arm, a fixed auxiliary arm, a telescopic mechanism, a main arm auxiliary connecting joint, a propeller strut, a crawler chassis, a winch, a hoisting steel wire rope, a main arm pulling plate and a lower vehicle rotary table body, one end of the main arm is connected with the lower vehicle rotary table body, and the other end is connected with a first hinge joint of the fixed auxiliary arm; a main arm auxiliary connecting joint and a telescopic mechanism used for adjusting the angle of the auxiliary arm are arranged between the main arm and the fixed auxiliary arm. According to the invention, a bracket, front and back anti-back-inclination and front and back pulling plates (inhaul cables) are not needed, and the telescopic mechanism with adjustable length is additionally arranged between the main arm and the auxiliary arm, so that various fixing angles of the auxiliary arm are fixed, the structure is simplified, the cost is reduced, and the operation flexibility is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cranes, in particular to a fixed auxiliary arm and a crawler crane. BACKGROUND

[0002] The fixed auxiliary arm of the crawler crane is installed on the basis of the main arm, used for increasing the lifting height or the working radius, the fixed auxiliary arm can expand the working range and improve the adaptability of the crane. The existing fixed auxiliary arm is usually composed of a main arm, an auxiliary arm, a support, front and rear anti-rear tilting front and rear pull plates (cables), the installation process is relatively complicated and the cost is high. There are specific deficiencies as follows:

[0003] 1. The angle of the existing fixed auxiliary arm is composed of a support, front and rear pull plates (cables), there are many components and the cost is high.

[0004] 2. The existing fixed auxiliary arm system usually has only two fixed angles, which cannot meet the diversified operation requirements, limiting the adaptability and flexibility of the crane.

[0005] 3. The existing fixed auxiliary arm system has a complex operation in the disassembly and assembly process, affecting the transfer and construction efficiency of the crane.

[0006] Therefore, it is necessary to develop a new type of fixed auxiliary arm and crawler crane to overcome the above problems. SUMMARY

[0007] The present application provides a fixed auxiliary arm and a crawler crane, which does not need a support, front and rear anti-rear tilting and front and rear pull plates (cables), by increasing a telescopic mechanism with adjustable length between the main arm and the auxiliary arm, a plurality of fixed angles of the fixed auxiliary arm are realized, the structure is simplified, the cost is reduced, and the operation flexibility is improved.

[0008] Technical scheme: The fixed auxiliary arm of the present application is characterized by comprising a main arm, a fixed auxiliary arm, a telescopic mechanism, a main arm auxiliary connecting joint, an A-frame, a crawler chassis, a winch, a lifting steel wire rope, a main arm pull plate and a lower vehicle rotary table body; one end of the main arm is connected with the lower vehicle rotary table body, the other end is connected with the first hinged part of the fixed auxiliary arm; the telescopic mechanism for adjusting the angle of the auxiliary arm is arranged between the main arm and the fixed auxiliary arm.

[0009] The fixed auxiliary arm does not have a support, front and rear anti-rear tilting and front and rear pull plates (cables).

[0010] The telescopic mechanism for adjusting the angle of the auxiliary arm is arranged between the fixed auxiliary arm and the main arm auxiliary connecting joint, the second end of the fixed auxiliary arm is connected with the hinged part of one end of the telescopic mechanism, and the second end of the telescopic mechanism is connected with the third end of the main arm auxiliary connecting joint.

[0011] The first end of the main arm sub-connecting section is connected with the arm head of the main arm, and the second end of the main arm sub-connecting section is connected with the telescopic mechanism and the fixed sub-arm.

[0012] The lower car turntable body is provided with a herringbone frame, one end of the herringbone frame is connected with the lower car turntable body, the herringbone frame is connected with the arm head of the main arm through the main arm pull plate, and the stability is improved through the triangular structure.

[0013] The lower section arm end of the main arm is provided with a connecting mounting hole for connecting the lower car turntable body, the lower car turntable body is provided with a winch at the upper portion, the lower car turntable body is connected with the tracked chassis at the lower portion, and the whole crane is realized 360-degree rotation and movement through the cooperation of the lower car turntable body and the tracked chassis.

[0014] The main arm pull plate is a pull cable.

[0015] The telescopic mechanism comprises a connecting plate group, a connecting plate and a connecting pin shaft, and the connecting plate group and the connecting plate are connected through the connecting pin shaft.

[0016] The connecting plate group and the connecting plate are fixed through the fixed different hole position pin shaft to form different lengths, so that different included angle states of the main arm and the sub-arm are realized.

[0017] The tracked crane is characterized in that the fixed sub-arm of the present application is used.

[0018] Compared with the prior art, the present application has the following advantages: the present application increases the length-adjustable structural device between the main arm and the sub-arm, realizes different fixed angles of the fixed sub-arm, overcomes the limitation that the traditional fixed sub-arm only has two fixed angles, greatly improves the adaptability and flexibility of the crane, and can meet diversified operation requirements. The present application does not need to use supports and front and rear pull cables, simplifies the structural design of the fixed sub-arm, reduces the overall weight, improves the lifting capacity, and also reduces the transportation cost and the weight during transportation.

[0019] The present application realizes the angle adjustment of the fixed sub-arm through the length-adjustable structural device, expands the operation radius and lifting height of the crane, makes it adapt to different construction conditions, and improves the flexibility of construction. The fixed sub-arm system of the present application does not need to prevent backward inclination, simplifies the installation operation process, reduces the assembly complexity, and improves the assembly efficiency. The present application realizes the lightweight and high-strength balance of the fixed sub-arm system through the optimization of structural design and material selection, improves the overall performance and service life of the crane. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the fixed sub-arm of the prior art;

[0021] Figure 2 It is a structural schematic diagram of the present invention;

[0022] Figure 3 This is a state diagram of the present invention when the fixed auxiliary arm angle is 0 degrees;

[0023] Figure 4 This is a state diagram of the present invention when the fixed auxiliary arm angle is 7.5 degrees;

[0024] Figure 5 This is a state diagram of the present invention when the fixed auxiliary arm angle is 15 degrees;

[0025] Figure 6 for Figure 3 The corresponding state diagram of the telescopic mechanism length L1;

[0026] Figure 7 for Figure 4 The corresponding state diagram of the telescopic mechanism length L2;

[0027] Figure 8 for Figure 5 The corresponding state diagram of the telescopic mechanism length L3;

[0028] In the figure, 1 is the main arm; 2 is the fixed auxiliary arm; 3 is the telescopic mechanism; 4 is the auxiliary connecting section of the main arm; 5 is the A-frame; 6 is the crawler chassis; 7 is the winch; 8 is the lifting wire rope; 9 is the main arm pull plate; 10 is the unloading turntable body; 31 is the connecting plate group; 32 is the connecting plate; 33 is the connecting pin shaft. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0030] The truss arm (jib) of the present invention is a truss structure used to lift heavy objects to a certain height and amplitude.

[0031] like Figure 2The fixed auxiliary arm of the application comprises a main arm 1, a fixed auxiliary arm 2, a telescopic mechanism 3, a main arm auxiliary connecting joint 4, an A-frame 5, a crawler chassis 6, a winch 7, a lifting steel wire rope 8, a main arm pull plate 9 and a lower vehicle rotary table body 10; one end of the main arm 1 is connected with the lower vehicle rotary table body 10, and the other end is connected with the first hinged part of the fixed auxiliary arm 2; the main arm 1 and the fixed auxiliary arm 2 are provided with the main arm auxiliary connecting joint 4 and the telescopic mechanism 3 for adjusting the angle of the auxiliary arm. The fixed auxiliary arm 2 is not provided with a support, front and rear anti-rear tilting and front and rear cables. The telescopic mechanism 3 for adjusting the angle of the auxiliary arm is arranged between the fixed auxiliary arm 2 and the main arm auxiliary connecting joint 4, the second end of the fixed auxiliary arm 2 is connected with the hinged part of one end of the telescopic mechanism 3, and the second end of the telescopic mechanism 3 is connected with the third end of the main arm auxiliary connecting joint 4. The first end of the main arm auxiliary connecting joint 4 is connected with the arm head of the main arm 1, and the second end of the main arm auxiliary connecting joint 4 is connected with the telescopic mechanism 3 and the fixed auxiliary arm 2. The A-frame 5 is arranged on the lower vehicle rotary table body 10, one end of the A-frame 5 is connected with the lower vehicle rotary table body 10, the A-frame 5 is connected with the arm head of the main arm 1 through the main arm pull plate 9, and the stability is improved through the triangular structure. The lower joint arm end of the main arm 1 is provided with a connecting mounting hole for connecting the lower vehicle rotary table body 10, the upper part of the lower vehicle rotary table body 10 is provided with the winch 7, the lower part of the lower vehicle rotary table body 10 is connected with the crawler chassis 6, and the whole crane realizes 360-degree rotation and movement through the cooperation of the lower vehicle rotary table body 10 and the crawler chassis 6. The main arm pull plate 9 is a cable.

[0032] The upper plate connecting hole of the telescopic mechanism 3 can be a long circular hole, a circular hole or various combinations; the structure capable of changing the length is not limited in form. The main auxiliary arm connecting joint 4 is provided with a steel wire rope guide device.

[0033] As Figures 3-8 The telescopic mechanism 3 of the application comprises a connecting plate group 31, a connecting plate 32 and a connecting pin shaft 33, and the connecting plate group 31 and the connecting plate 32 are connected through the connecting pin shaft 33. The connecting plate group 31 and the connecting plate 32 are fixed by fixed different hole position pin shafts to form different lengths, so as to realize different included angle states of the main auxiliary arm and realize the function of the conventional fixed auxiliary arm working condition.

[0034] Specifically, Figure 3 is a state diagram of the fixed auxiliary arm included angle being 0 degrees, Figure 6 is Figure 3 a state diagram of the corresponding telescopic mechanism length L1. Figure 4 is a state diagram of the fixed auxiliary arm included angle being 7.5 degrees, Figure 7 is Figure 4 a state diagram of the corresponding telescopic mechanism length L2. Figure 5 is a state diagram of the fixed auxiliary arm included angle being 15 degrees; Figure 8 is Figure 5 a state diagram of the corresponding telescopic mechanism length L3.

[0035] The application overcomes the limitation of the traditional fixed auxiliary arm with only two fixed angles by increasing the adjustable length structure device between the main arm and the auxiliary arm, greatly improves the adaptability and flexibility of the crane, and can meet the diversified operation requirements.

[0036] The application does not need to use a support and front and rear cables, simplifies the structural design of the fixed auxiliary arm, reduces the overall weight, improves the lifting capacity, and also reduces the transportation cost and the weight during transportation.

[0037] The application realizes the angle adjustment of the fixed auxiliary arm through the adjustable length structure device, expands the operation radius and lifting height of the crane, makes it adapt to different construction conditions, and improves the flexibility of construction.

[0038] The fixed auxiliary arm system of the application does not need to prevent backward inclination, simplifies the installation operation process, reduces the assembly complexity, and improves the assembly efficiency. The application realizes the lightweight and high strength balance of the fixed auxiliary arm system through the optimization of the structural design and material selection, improves the overall performance and service life of the crane.

Claims

1. A fixed jib, characterized in that: The utility model comprises a main arm (1), a fixed auxiliary arm (2), a telescopic mechanism (3), a main arm auxiliary connecting joint (4), an A-shaped frame (5), a crawler chassis (6), a winch (7), a lifting wire rope (8), a main arm pull plate (9) and a dismounting turntable body (10); one end of the main arm (1) is connected to the dismounting turntable body (10), and the other end is connected to the first hinge of the fixed auxiliary arm (2); a main arm auxiliary connecting joint (4) and a telescopic mechanism (3) for adjusting the auxiliary arm angle are provided between the main arm (1) and the fixed auxiliary arm (2).

2. The fixed auxiliary arm according to claim 1, characterized in that: The fixed auxiliary arm (2) is not provided with a bracket, front and rear anti-tilt devices, or front and rear cables.

3. The fixed auxiliary arm according to claim 1, characterized in that: A telescopic mechanism (3) for adjusting the angle of the auxiliary arm is provided between the fixed auxiliary arm (2) and the auxiliary connecting section (4) of the main arm; the second end of the fixed auxiliary arm (2) is connected to a hinged portion of one end of the telescopic mechanism (3); and the second end of the telescopic mechanism (3) is connected to a third end of the auxiliary connecting section (4) of the main arm.

4. The fixed auxiliary arm according to claim 3, characterized in that: The first end of the main arm auxiliary connecting section (4) is connected to the arm head of the main arm (1), and the second end of the main arm auxiliary connecting section (4) is connected to the telescopic mechanism (3) and the fixed auxiliary arm (2).

5. The fixed auxiliary arm according to claim 1, characterized in that: The dismounting turntable body (10) is provided with an A-frame (5), one end of which is connected to the dismounting turntable body (10), and the A-frame (5) is connected to the arm head of the main arm (1) through the main arm pull plate (9), thereby improving stability through the triangular structure.

6. The fixed auxiliary arm according to claim 5, characterized in that: The lower arm end of the main arm (1) is provided with a connection and mounting hole for connecting to a dismounting turntable body (10); a winch (7) is provided on the upper part of the dismounting turntable body (10); the lower part of the dismounting turntable body (10) is connected to a crawler chassis (6); and the overall crane realizes 360-degree rotation and movement through the cooperation between the dismounting turntable body (10) and the crawler chassis (6).

7. The fixed auxiliary arm according to claim 5, characterized in that: The main arm pull plate (9) is a pull cable.

8. The fixed auxiliary arm according to claim 1, characterized in that: The telescopic mechanism (3) comprises a connecting plate group (31), a connecting plate (32) and a connecting pin (33); the connecting plate group (31) and the connecting plate (32) are connected via the connecting pin (33).

9. The fixed auxiliary arm according to claim 8, characterized in that: The connecting plate group (31) and the connecting plate (32) are fixed to different lengths by fixing pins at different hole positions, thereby realizing different angle states of the main arm and the auxiliary arm.

10. A crawler crane, characterized in that: Use the fixed auxiliary arm according to any one of claims 1 to 9.

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