Backward inclination prevention structure

Abstract

The utility model discloses an anti-back-inclination structure which comprises a right sleeve and a left core tube, a compression spring is arranged between the right sleeve and the left core tube, guide rods for guiding are arranged on two sides of the right sleeve and the left core tube, the right ends of the guide rods are connected with guide rod fixing bolts, and the left ends of the guide rods are connected with left limiting bolts. The utility model has the advantages of simple structure and convenience in use, and effectively resists the backward inclination trend of the boom or other structural members of the crawler crane.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to an anti-tipping structure, and more particularly to a mechanical anti-tipping structure for a crawler crane. Background Art

[0002] A crawler crane is a mechanical device that uses a crawler walking chassis and can lift heavy objects to a certain height. Under special environments and requirements, the boom or other structural members tend to tip to one side, generally backward. In order to resist the tipping trend of the boom or other structural members, it is necessary to design and manufacture an anti-tipping structure.

[0003] The anti-tipping structure can resist the backward tipping trend of the jib to a certain extent. Different forms of anti-tipping structures have different working principles and different costs. The existing oil cylinder type anti-tipping is controlled by hydraulics, can achieve active elongation, and provide a certain compressive capacity, but the hydraulic cylinder type anti-tipping has a high cost, requires pipeline laying, and the operation is not flexible enough.

[0004] Therefore, it is necessary to develop an anti-tipping structure specifically, which is simple in structure, convenient to use, and can effectively resist the backward tipping trend of the boom or other structural members of the crawler crane. Summary of the Utility Model

[0005] Utility Model Objective: Aiming at the deficiencies and defects of the prior art, the utility model provides an anti-tipping structure, which is simple in structure, convenient to use, and can effectively resist the backward tipping trend of the boom or other structural members of the crawler crane.

[0006] Technical Solution: An anti-tipping structure of the utility model is characterized in that it includes a right sleeve and a left core tube. A compression spring is arranged between the right sleeve and the left core tube. Guide rods for guiding are arranged on both sides of the right sleeve and the left core tube. The right end of the guide rod is connected to the guide rod fixing bolt, and the left end of the guide rod is connected to the left limit bolt.

[0007] Wherein, a right connecting pin shaft is arranged at the end of the right sleeve.

[0008] Wherein, lug structures are arranged on both sides of the right sleeve, and the lugs are provided with guide holes for the guide rods to pass through.

[0009] Wherein, a left connecting pin shaft is arranged at the end of the left core tube.

[0010] Wherein, 2 lug structures are arranged on both sides of the left core tube. One of the lugs is provided with a guide hole for the guide rod to pass through, and the other lug is installed with a guide rod fixing bolt.

[0011] Beneficial effects: Compared with the prior art, the utility model has the following remarkable advantages: The utility model is provided with a guiding structure of a guide rod and a compressible structure of a compression spring, with a simple structure and convenient use, effectively resisting the backward tilting tendency of the boom or other structural members of a crawler crane. The utility model enables the anti-backward tilting rod to be compressed within a limited length and can bear a certain pressure; the guide rod structure can ensure that there is no relative rotation between the core tube and the sleeve when the spring is compressed; the pure mechanical structure effectively controls the cost of anti-backward tilting, reduces the manual operation actions for anti-backward tilting, and reduces its maintenance intensity. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the utility model;

[0013] In the figure, 1 is the right connecting pin; 2 is the guide rod fixing bolt; 3 is the right sleeve; 4 is the guide rod; 5 is the compression spring; 6 is the left limit bolt; 7 is the left core tube; 8 is the left connecting pin. Specific Embodiment

[0014] The technical solution of the utility model will be further described below in conjunction with the drawings and specific embodiments.

[0015] The anti-backward tilting structure of the utility model includes a right sleeve 3 and a left core tube 7. A compression spring 5 is arranged between the right sleeve 3 and the left core tube 7. Guide rods 4 for guiding are arranged on both sides of the right sleeve 3 and the left core tube 7. The right end of the guide rod 4 is connected to the guide rod fixing bolt 2, and the left end of the guide rod 4 is connected to the left limit bolt 6. Among them, a right connecting pin 1 is arranged at the end of the right sleeve 3. Lugs are arranged on both sides of the right sleeve 3, and the lugs are provided with guide holes for the guide rod 4 to pass through. A left connecting pin 8 is arranged at the end of the left core tube 7. Two lugs are arranged on both sides of the left core tube 7. One of the lugs is provided with a guide hole for the guide rod 4 to pass through, and the other lug is installed with the guide rod fixing bolt 2.

[0016] During use, after the left and right sides of the anti-backward tilting structure of the utility model are respectively connected to the hinge points of the boom of the crawler crane, when the hinge points approach each other, the anti-backward tilting structure is compressed. At this time, the compression spring 5 is compressed, and the guide rod 4 moves in the guide hole of the left core tube 7; when the hinge points move away from each other, the compressed spring is released.

[0017] The utility model is provided with a guiding structure of a guide rod 4 and a compressible structure of a compression spring 5. The structure is simple and convenient to use, and can effectively resist the backward tilting tendency of the boom or other structural members of a crawler crane. The utility model enables the anti-backward tilting rod to be compressed within a limited length and can bear a certain pressure; the structure of the guide rod 4 can ensure that there is no relative rotation between the core pipe and the sleeve when the spring is compressed; the pure mechanical structure effectively controls the cost of anti-backward tilting, reduces the manual operation actions for anti-backward tilting, and reduces its maintenance intensity.

Claims

1. An anti-tilt structure, characterized in that: The invention comprises a right sleeve (3) and a left core tube (7), wherein a compression spring (5) is arranged between the right sleeve (3) and the left core tube (7), guide rods (4) for guiding are arranged on both sides of the right sleeve (3) and the left core tube (7), the right end of the guide rod (4) is connected to a guide rod fixing bolt (2), and the left end of the guide rod (4) is connected to a left limit bolt (6); a right connecting pin shaft (1) is arranged at the end of the right sleeve (3); lug structures are arranged at both sides of the right sleeve (3), and the lugs are provided with guide holes for the guide rod (4) to pass through; a left connecting pin shaft (8) is arranged at the end of the left core tube (7); two lug structures are arranged at both sides of the left core tube (7), one of the lugs is provided with a guide hole for the guide rod (4) to pass through, and the other lug is provided with a guide rod fixing bolt (2).

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