Special lifting pin tool for crane

Abstract

The invention discloses a pin lifting tool special for a crane. The pin lifting tool comprises a top frame, a hydraulic cylinder arranged at one end of the top frame and a top head fixedly connected to the end of a rod body of the hydraulic cylinder. The top frame comprises a square bottom rod, a vertical rod fixedly connected above one end of the square bottom rod and a top plate arranged on the square bottom rod, the top plate is arc-shaped, the end, away from the vertical rod, of the square bottom rod is a slope, one end of the top plate is fixedly connected with the upper side, away from the vertical rod, of the square bottom rod, and the other end of the top plate is fixedly connected to the upper end of the vertical rod, so that the whole top frame is of a triangular structure. The hydraulic cylinder is connected with a small hydraulic station; a groove matched with the pin shaft is formed in the side, away from the hydraulic cylinder, of the top head; and a lifting device is arranged on the hydraulic cylinder. The hydraulic jacking device can be well jacked between the two arm supports with the included angle being an acute angle, the hydraulic cylinder stretches out, the jacking head can jack out the jacking pin at the other end, operation is easy and convenient, the working efficiency is greatly improved, the labor intensity is reduced, and the working safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of crane disassembly tools, in particular to a special pin ejection tool for cranes. Background Art

[0002] At present, most of the jibs, standard sections and other components on small and medium-tonnage tower cranes produced in China are connected by pins. When disassembling, the pins need to be pushed out. At this stage, a push rod is generally used to align the pins, and then a sledgehammer is used to continuously hit them to slowly push the pins out. This is not only inefficient, but also greatly increases the labor intensity of workers. Sometimes the hammer may be off-center, which can easily cause damage to the crane jib, standard sections, workers, etc., and has poor safety. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a special lifting pin tool for crane.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is a special pin-lifting tool for cranes: comprising a top frame, a hydraulic cylinder arranged at one end of the top frame, and a pin head fixedly connected to the end of the rod body of the hydraulic cylinder;

[0005] The top frame includes a square bottom bar, a vertical bar fixedly connected to one end of the square bottom bar, and a top plate arranged on the square bottom bar. The top plate is arc-shaped, and the end of the square bottom bar away from the vertical bar is sloped. One end of the top plate is fixedly connected to the upper side of the square bottom bar away from the vertical bar end, and the other end of the top plate is fixedly connected to the upper end of the vertical bar, so that the top frame is a triangular structure as a whole. The hydraulic cylinder is connected to a small hydraulic station.

[0006] The side of the top head away from the hydraulic cylinder is provided with a groove matching the pin shaft;

[0007] A lifting device is arranged on the hydraulic cylinder.

[0008] Furthermore, two lifting devices are provided, and the two lifting devices are symmetrically arranged on both sides along the middle of the hydraulic cylinder.

[0009] Furthermore, the lifting device includes a lantern hanging card sleeved and clamped on the hydraulic cylinder body, a safety buckle connected to the lantern hanging card, a connecting ring connected to the safety buckle, and a strip connected to the connecting ring, and the strip is provided with a lifting handle.

[0010] Furthermore, rubber pads are provided at the bottoms of both ends of the square bottom rod, and a rubber ring is provided at the end of the hydraulic cylinder away from the top frame.

[0011] Furthermore, the end of the square bottom rod away from the slope is fixedly connected to a limiting tube, the inner diameter of the limiting tube is matched with the outer diameter of the cylinder body of the hydraulic cylinder, and the cylinder body end of the hydraulic cylinder is inserted into the limiting tube and then fixedly connected to the square bottom rod, which is detachable.

[0012] The advantages of the present invention compared with the prior art are: the present invention adopts the overall triangular structure design of the top frame and the arc-shaped design of the top plate, so that it can be well placed between two arms with an acute angle, and the hydraulic cylinder is extended so that the top head can push out the top pin at the other end. The operation is simple and convenient, which greatly improves the working efficiency, reduces the labor intensity, improves the working safety, is not easy to be damaged, has a simple structure, adopts a small hydraulic station, and a lifting device is provided on the hydraulic cylinder, so it is easy to carry and use, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a structural schematic diagram of a special lifting pin tool for a crane of the present invention.

[0014] Figure 2 The present invention is a structural schematic diagram of a special pin-lifting tool for crane without a small hydraulic station.

[0015] As shown in the figure:

[0016] 1. Hydraulic cylinder, 2. Top head, 3. Square bottom rod, 4. Vertical rod, 5. Top plate, 6. Small hydraulic station, 7. Groove, 8. Lantern hanging card, 9. Safety buckle, 10. Connecting ring, 11. Strip belt, 12. Lifting handle, 13. Rubber pad, 14. Rubber ring, 15. Limiting pipe. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Embodiment 1, in combination with Figure 1-2 A special pin-lifting tool for cranes comprises a top frame, a hydraulic cylinder 1 arranged at one end of the top frame, and a pin 2 fixedly connected to the end of a rod of the hydraulic cylinder 1;

[0019] The top frame includes a square bottom bar 3, a vertical bar 4 fixedly connected to one end of the square bottom bar 3, and a top plate 5 arranged on the square bottom bar 3. The top plate 5 is arc-shaped, and the end of the square bottom bar 3 away from the vertical bar 4 is sloped. One end of the top plate 5 is fixedly connected to the upper side of the end of the square bottom bar 3 away from the vertical bar 4, and the other end of the top plate 5 is fixedly connected to the upper end of the vertical bar 4, so that the top frame has a triangular structure as a whole, and the hydraulic cylinder 1 is connected to a small hydraulic station 6;

[0020] The side of the ram 2 away from the hydraulic cylinder 1 is provided with a groove 7 adapted to the pin;

[0021] The hydraulic cylinder 1 is provided with a lifting device.

[0022] When in use, the top frame and the hydraulic cylinder 1 are lifted by the lifting device and placed on the bottom boom of the crane, with the top frame close to the end of the boom that is obliquely connected to the bottom boom. Since the inclined boom is a round tube, the radius of the arc-shaped surface of the top plate 5 matches the tube radius of the inclined boom. The top plate 5 is fitted with the inclined boom, and the hydraulic cylinder 1 is started by the small hydraulic station 6 to extend the hydraulic rod, driving the jack 2 to move, thereby ejecting the pin at the adjacent boom connection at the other end.

[0023] In this embodiment, two lifting devices are provided, and the two lifting devices are symmetrically arranged on both sides along the middle of the hydraulic cylinder 1, so that when the hydraulic cylinder 1 is lifted, the hydraulic cylinder 1 can be prevented from tilting to one end, thereby improving the convenience and safety of operation.

[0024] In this embodiment, the lifting device includes a lantern hanging card 8 which is sleeved and clamped on the cylinder body of the hydraulic cylinder 1, a safety buckle 9 connected to the lantern hanging card 8, a connecting ring 10 connected to the safety buckle 9, and a strip belt 11 connected to the connecting ring 10, and a lifting handle 12 is provided on the strip belt 11.

[0025] In this embodiment, the strip belt 11 is a cloth belt.

[0026] In this embodiment, rubber pads 13 are provided at the bottom of both ends of the square bottom rod 3, and a rubber ring 14 is provided at the end of the hydraulic cylinder 1 away from the top frame. When the top frame and the hydraulic cylinder 1 are placed on the bottom arm frame, they can play a role in buffering, anti-slip, and avoiding bumps on the arm frame.

[0027] In this embodiment, the lantern hanger 8 is a lantern hanger with a rubber pad, so that the lantern hanger 8 is firmly connected and damage to the surface of the cylinder body of the hydraulic cylinder 1 is avoided.

[0028] In this embodiment, the end of the square bottom rod 3 away from the slope is fixedly connected to a limiting tube 15, the inner diameter of the limiting tube 15 is matched with the outer diameter of the cylinder body of the hydraulic cylinder 1, and the cylinder body end of the hydraulic cylinder 1 is inserted into the limiting tube 15 and then fixedly connected to the square bottom rod 3, which is detachable.

[0029] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0032] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A special pin-lifting tool for crane, characterized in that: It comprises a top frame, a hydraulic cylinder (1) arranged at one end of the top frame, and a top head (2) fixedly connected to the end of the rod body of the hydraulic cylinder (1); The top frame comprises a square bottom bar (3), a vertical bar (4) fixedly connected to the upper end of one end of the square bottom bar (3), and a top plate (5) arranged on the square bottom bar (3); the top plate (5) is arc-shaped; the end of the square bottom bar (3) away from the vertical bar (4) is sloped; one end of the top plate (5) is fixedly connected to the upper side of the end of the square bottom bar (3) away from the vertical bar (4); the other end of the top plate (5) is fixedly connected to the upper end of the vertical bar (4), so that the top frame as a whole has a triangular structure; the hydraulic cylinder (1) is connected to a small hydraulic station (6); The side of the ram (2) away from the hydraulic cylinder (1) is provided with a groove (7) adapted to the pin shaft; The hydraulic cylinder (1) is provided with a lifting device.

2. A special pin-lifting tool for crane according to claim 1, characterized in that: The lifting devices are provided with two, and the two lifting devices are symmetrically arranged on both sides along the middle of the hydraulic cylinder (1).

3. A special pin-lifting tool for crane according to claim 2, characterized in that: The lifting device comprises a lantern hanging card (8) sleeved and clamped on the cylinder body of the hydraulic cylinder (1), a safety buckle (9) connected to the lantern hanging card (8), a connecting ring (10) connected to the safety buckle (9), and a strip belt (11) connected to the connecting ring (10), wherein a lifting handle (12) is provided on the strip belt (11).

4. A special pin-lifting tool for crane according to claim 3, characterized in that: The strip belt (11) is a cloth belt.

5. The special pin-lifting tool for crane according to claim 1, characterized in that: Rubber pads (13) are provided at the bottoms of both ends of the square bottom rod (3), and a rubber ring (14) is provided at the end of the hydraulic cylinder (1) away from the top frame.

6. A special pin-lifting tool for crane according to claim 3, characterized in that: The lantern hanger (8) is a lantern hanger with a rubber pad.

7. The special pin-lifting tool for crane according to claim 1, characterized in that: The end of the square bottom rod (3) away from the slope is fixedly connected to a limit tube (15), the inner diameter of the limit tube (15) is matched with the outer diameter of the cylinder body of the hydraulic cylinder (1), and the cylinder body end of the hydraulic cylinder (1) is inserted into the limit tube (15) and then fixedly connected to the square bottom rod (3), and is detachable.

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