Crawler crane

Abstract

The utility model relates to the field of crawler cranes. A crawler crane comprises a base, a rotary table, a fixing plate, a movable arm, a control chamber and a positioning balancing weight, the base comprises a chassis, a crawler belt and a driving motor, the rotary table is installed on the chassis, the fixing plate is installed on the rotary table, and the movable arm is installed on the rotary table. The movable arm, the control chamber and the positioning balancing weight are installed on the fixing plate, a sliding groove is formed in the lower portion of the fixing plate, a sliding block matched with the sliding groove is arranged on the upper portion of the rotary table, the sliding block is located in the sliding groove and connected with the sliding groove in a clamped mode, and a plurality of first hydraulic cylinders are installed between the fixing plate and the chassis. A hydraulic cylinder base of each first hydraulic cylinder is installed on the chassis, a top groove is formed in the position, corresponding to each first hydraulic cylinder, of the fixing plate, when the rotary table does not need to rotate, the end head of a telescopic arm of each first hydraulic cylinder abuts against the top groove, and when the rotary table needs to rotate, the end head of the telescopic arm of each first hydraulic cylinder does not make contact with the fixing plate.

Description

Technical Field

[0001] This utility model relates to the field of crawler cranes. Background Technology

[0002] A crawler crane is a high-rise building construction equipment that uses tracks to move. It features a full-slewing boom structure and is widely used in hoisting, transportation, and loading / unloading operations. Its components include: boom, turntable, chassis, traveling mechanism (tracks), slewing mechanism, and hoisting / luffing system, enabling 360° rotation. However, traditional crawler cranes often suffer from insufficient stability and inconvenient operation, especially in complex terrain and harsh environments. Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to improve the stability of crawler cranes.

[0004] The technical solution adopted by this utility model is: a crawler crane, including a base, a turntable (6), a fixed plate (4), a boom (1), a control room (3), and a positioning counterweight (5). The base includes a chassis (7), crawler tracks (18), and a drive motor (19). The turntable (6) is mounted on the chassis (7), the fixed plate (4) is mounted on the turntable (6), and the boom (1), control room (3), and positioning counterweight (5) are mounted on the fixed plate (4). The lower part of the fixed plate (4) has a sliding groove (15), and the upper part of the turntable (6) has a groove (15) that corresponds to the sliding groove (19). 5) The sliding block (17) is in the groove (15) and is snapped together. A first hydraulic cylinder (20) is installed between the fixed plate (4) and the chassis (7). There are multiple first hydraulic cylinders. The hydraulic cylinder base of each first hydraulic cylinder is installed on the chassis (7). The fixed plate (4) has a top groove (25) corresponding to the position of each first hydraulic cylinder. When the turntable (6) does not need to rotate, the end of the telescopic arm of each first hydraulic cylinder is in the top groove. When the turntable needs to rotate, the end of the telescopic arm of each first hydraulic cylinder does not contact the fixed plate (4).

[0005] One end of the boom (1) is mounted on the fixed plate (4) via the boom support seat (9). The other end of the boom (1) has a telescopic arm (8). The end of the telescopic arm (8) is connected to the movable pulley (11) via a steel wire rope. The shaft of the movable pulley (11) is fixed on the triangular seat cavity (10). The triangular seat cavity (10) is a hollow triangular cavity with an opening on the upper side. The lower side of the triangular seat cavity (10) is connected to a hook (2).

[0006] The control room (3) and the positioning counterweight (5) are connected together in an integrated structure. The lower part of the positioning counterweight (5) is connected to a card block (16). The fixing plate (4) has a card slot (14). The card block (16) is locked in the card slot (14) and fixed by bolts.

[0007] The control room (3) has glass windows (12) and doors (13).

[0008] The first hydraulic cylinder consists of two rows, with the base of each row of first hydraulic cylinders resting on a trolley (23). The wheels of each trolley are located in wheel grooves (24). The fixed plate (4) and the chassis (7) are both cuboids, with the projection of the chassis (7) onto the fixed plate (4) located within the fixed plate (4). The fixed plate (4) has a push-pull plate (22) at its rear, and a second hydraulic cylinder (21) is located between the push-pull plate (22) and the chassis (7). The second hydraulic cylinder (21) is movably connected to either the fixed plate (4) or the push-pull plate (22).

[0009] The second hydraulic cylinder (21) consists of multiple cylinders arranged in parallel.

[0010] The beneficial effects of this utility model are: the first hydraulic cylinder provides support, which improves the stability of the crawler crane; the second hydraulic cylinder moves the position between the chassis and the fixed plate, thereby changing the center of the crawler crane and improving its stability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 This is a schematic diagram of the base structure of the present invention;

[0013] Figure 3 This is a schematic diagram of the connection between the slider and the groove of the present invention;

[0014] Figure 4 This is a schematic diagram of the installation of the control room and positioning counterweight of the present invention;

[0015] Figure 5 This is a schematic diagram of the support for the first hydraulic cylinder of the present invention;

[0016] Figure 6 This is a schematic diagram of the installation of the first hydraulic cylinder of the present invention;

[0017] Among them, 1. boom, 2. hook, 3. control room, 4. fixed plate, 5. positioning counterweight, 6. turntable, 7. chassis, 8. telescopic boom, 9. boom support seat, 10. triangular seat, 11. moving pulley, 12. glass window, 13. door, 14. slot, 15. slide, 16. locking block, 17. slider, 18. track, 19. drive motor, 20. first hydraulic cylinder, 21. second hydraulic cylinder, 23. trolley, 24. wheel groove, 25. top groove. Detailed Implementation

[0018] like Figure 1-6 As shown, a crawler crane includes a base, a turntable 6, a fixed plate 4, a boom 1, a control room 3, and a positioning counterweight 5.

[0019] The base, including chassis 7, tracks 18 and drive motor 19, is existing technology. The chassis 7 is a rectangular plate connected to the tracks 18 on both sides. The front and rear drive motors drive the base to move as a whole, thereby realizing the movement of the tracked crane. In fact, the base also includes other supporting devices, but since this is existing technology, it will not be described in detail here.

[0020] The turntable 6 is mounted on the chassis 7. The turntable 6 is the core component of the slewing mechanism of the crawler crane. It is a metal structure located above the slewing bearing and is mainly used to support components such as the boom and to realize the full slewing motion of the crane in the horizontal direction. It belongs to the prior art.

[0021] The fixed plate 4 is mounted on the turntable 6. The fixed plate 4 is a cuboid plate, the length and width of which are greater than the length and width of the chassis 7. The boom 1, the control room 3, and the positioning counterweight 5 are mounted on the fixed plate 4. The boom 1 and the control room 3 are existing technologies.

[0022] The lower part of the fixed plate 4 has a sliding groove 15, and the upper part of the turntable 6 has a slider 17 that cooperates with the sliding groove 15. The slider 17 is located in the sliding groove 15 and is engaged together. When needed, the slider 17 can move in the sliding groove 15 to adjust the center and ensure the stability of the crawler crane.

[0023] A first hydraulic cylinder 20 is installed between the fixed plate 4 and the chassis 7. There are multiple first hydraulic cylinders, each with its base mounted on the chassis 7. The fixed plate 4 has a top groove 25 corresponding to the position of each first hydraulic cylinder. When the turntable 6 does not need to rotate, the end of the telescopic arm of each first hydraulic cylinder rests in the top groove. When the turntable needs to rotate, the end of the telescopic arm of each first hydraulic cylinder does not contact the fixed plate 4. The purpose of the first hydraulic cylinders is to assist in the stability of the fixed plate 4 and prevent instability of the crawler crane due to center shift during lifting.

[0024] One end of the boom 1 is mounted on the fixed plate 4 via a boom support 9. The other end of the boom 1 has a telescopic arm 8, the end of which is connected to a movable pulley 11 via a steel wire rope. The shaft of the movable pulley 11 is fixed to a triangular seat 10. The triangular seat cavity 10 is a hollow triangular cavity with an opening on the upper side. A hook 2 is connected to the lower side of the triangular seat cavity 10. The pulley 11 is located in the triangular seat cavity 10, which increases stability.

[0025] The control room 3 and the positioning counterweight 5 are integrated and connected together. The lower part of the positioning counterweight 5 is connected to a locking block 16. The fixing plate 4 has a locking groove 14, and the locking block 16 is locked in the locking groove 14 and fixed with bolts. This facilitates the disassembly and assembly of the control room 3 and the positioning counterweight 5, and makes maintenance convenient.

[0026] The control room 3 has glass windows 12 and doors 13.

[0027] The first hydraulic cylinder consists of two rows, with the base of the first hydraulic cylinder in each row resting on a trolley 23. The wheels of each trolley are located in wheel grooves 24, the purpose of which is to allow the wheels of the trolley 23 to move within the wheel grooves 24, thereby achieving controllability of movement.

[0028] Both the fixed plate 4 and the chassis 7 are cuboids, and the projection of the chassis 7 onto the fixed plate 4 is within the fixed plate 4. The fixed plate 4 has a push-pull plate 22 at its rear end. A second hydraulic cylinder 21 is located between the push-pull plate 22 and the chassis 7. The second hydraulic cylinder 21 is movably connected to either the fixed plate 4 or the push-pull plate 22. Multiple second hydraulic cylinders 21 are arranged in parallel.

[0029] During operation, first, start the motor 19 to make the track 18 start rotating and move the crane to the work site. Second, adjust the angle of the boom 1 through the control device in the control room 3 so that the hook 2 can be accurately aligned with the item to be suspended. Then, hang the hook 2 on the item to be suspended. Through the control device in the control room 3, slowly raise the boom 1 to suspend the item in the air. Finally, as needed, adjust the angle of the boom 1, the length of the extension arm 8, and the rotation angle of the turntable 6 through the control device in the control room 3 to move the item to the designated position.

[0030] In order to maintain stability, the relative positions of the fixed plate and the chassis are adjusted according to the boom 1, angle and the lifting height of the suspended item, so that the center is as close as possible to the middle of the chassis.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crawler crane, characterized in that: The system includes a base, a turntable (6), a fixed plate (4), a boom (1), a control room (3), and a positioning counterweight (5). The base includes a chassis (7), tracks (18), and a drive motor (19). The turntable (6) is mounted on the chassis (7), and the fixed plate (4) is mounted on the turntable (6). The boom (1), control room (3), and positioning counterweight (5) are mounted on the fixed plate (4). The lower part of the fixed plate (4) has a sliding groove (15), and the upper part of the turntable (6) has a slider (17) that cooperates with the sliding groove (15). The slider (17) is located in the groove (15) and is snapped together. A first hydraulic cylinder (20) is installed between the fixed plate (4) and the chassis (7). There are multiple first hydraulic cylinders. The hydraulic cylinder base of each first hydraulic cylinder is installed on the chassis (7). The fixed plate (4) has a top groove (25) corresponding to the position of each first hydraulic cylinder. When the turntable (6) does not need to rotate, the end of the telescopic arm of each first hydraulic cylinder is in the top groove. When the turntable needs to rotate, the end of the telescopic arm of each first hydraulic cylinder does not contact the fixed plate (4).

2. A crawler crane according to claim 1, characterized in that: One end of the boom (1) is mounted on the fixed plate (4) via the boom support seat (9). The other end of the boom (1) has a telescopic arm (8). The end of the telescopic arm (8) is connected to the movable pulley (11) via a steel wire rope. The shaft of the movable pulley (11) is fixed on the triangular seat cavity (10). The triangular seat cavity (10) is a hollow triangular cavity with an opening on the upper side. The lower side of the triangular seat cavity (10) is connected to a hook (2).

3. A crawler crane according to claim 1, characterized in that: The control room (3) and the positioning counterweight (5) are connected together in an integrated structure. The lower part of the positioning counterweight (5) is connected to a card block (16). The fixing plate (4) has a card slot (14). The card block (16) is locked in the card slot (14) and fixed by bolts.

4. A crawler crane according to claim 1, characterized in that: The control room (3) has glass windows (12) and doors (13).

5. A crawler crane according to claim 1, characterized in that: The first hydraulic cylinder is in two rows, and the base of the first hydraulic cylinder in each row is on a small cart (23). The wheels of each row of carts are in the wheel groove (24). The fixed plate (4) and the chassis (7) are both cuboids, and the projection of the chassis (7) on the fixed plate (4) is in the fixed plate (4). The fixed plate (4) has a push-pull plate (22) at its tail. There is a second hydraulic cylinder (21) between the push-pull plate (22) and the chassis (7). The second hydraulic cylinder (21) is movably connected to the fixed plate (4) or the push-pull plate (22).

6. A crawler crane according to claim 5, characterized in that: The second hydraulic cylinder (21) consists of multiple cylinders arranged in parallel.

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