Matching tool of oil cylinder and pin shaft

Abstract

According to the matching tool of the oil cylinder and the pin shaft, after the protruding part is aligned with the limiting groove from the position between the two connecting lugs and embedded into the limiting groove, the locking piece penetrates through the through hole to connect the connecting block and the connecting lugs into a whole, and after a cantilever beam of a gantry crane is turned over to a preset angle, the connecting block and the connecting lugs are locked. When the cantilever beam needs to be overturned, the supporting pieces on the cantilever beam are located between the supporting pieces arranged on the gantry crane, then the pin shaft is driven by the oil cylinder to descend, driving of the oil cylinder is stopped after the limiting part of the pin shaft abuts against the supporting pieces on the gantry crane, and the cantilever beam of the gantry crane is fixed; and the pin shaft is controlled by the oil cylinder to move out of the connecting hole of the cantilever beam supporting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a matching tooling for an oil cylinder and a pin shaft. Background Art

[0002] In recent years, my country's various industries have developed rapidly. The accelerated adjustment of the national industrial structure, the accelerated development of urbanization, and the development needs of various related industries have provided a broad market for the development of the lifting industry. Among lifting machinery and equipment, gantry cranes are a variation of bridge cranes, also known as portal cranes. They are mainly used for outdoor loading and unloading operations in cargo yards, material yards, and bulk cargo. Their load-bearing main beams are equipped with two legs installed under them, allowing them to travel directly on the ground or deck tracks. The main beams can have outrigger cantilever beams at both ends.

[0003] For example, the patent document with Chinese patent number 202321780180.0 and announcement date 2024.03.29 discloses an adjustable gantry crane, which includes a main beam, two support legs and a lifting mechanism. The main beam is spanned by the two support legs, and each of the support legs includes a first support part, a second support part, a first adjustment sleeve and a first driving member. One end of the second support part is connected to the main beam; the first adjustment sleeve is connected to the end of the second support part away from the main beam, and the first adjustment sleeve forms an angle with the second support part; the end of the first support part close to the second support part is parallel to the first adjustment sleeve and inserted in the first adjustment sleeve, and the first driving member is connected to the first support part.

[0004] In the actual operation of the gantry crane, in order to meet different operating requirements, the cantilever beams at both ends of the gantry crane need to be opened outward to achieve flipping, so that the crane on the main beam of the gantry crane can move outward a greater distance to meet the operating requirements. After the cantilever beam is opened and flipped outward, it needs to be fixed, otherwise it will affect the crane's movement operation. The above-mentioned document only describes the adjustable legs and lifting mechanism, and does not explain how to fix the flipped cantilever beam, while making the fixing process simple and saving labor. Utility Model Content

[0005] The purpose of the utility model is to provide a matching tool for an oil cylinder and a pin shaft, which can fix the cantilever beam after turning over, and is convenient for installing the pin shaft and saves labor.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a matching tooling of an oil cylinder and a pin shaft, which is used to be set on the cantilever beam of a gantry crane, including an output end of the oil cylinder and a pin shaft, the output end of the oil cylinder is fixedly provided with a connecting block, the upper end of the pin shaft is provided with more than two connecting ears, the connecting block and the connecting ears are provided with through holes matching the locking piece, the upper end surface of the pin shaft is recessed inwardly along the axial direction of the pin shaft to form a limiting groove, the lower end portion of the connecting block is extended outwardly along the length direction of the connecting block to form a protrusion matching the limiting groove, and the pin shaft is fixed in the connecting hole of the support member inserted into the cantilever beam under the drive of the oil cylinder.

[0007] The above arrangement, due to the setting of the limit groove, after the protrusion is aligned with the limit groove between the two connecting ears and embedded in the limit groove, the through hole on the connecting block is aligned with the through hole on the connecting ear, and the locking piece can be passed through the through hole to connect the connecting block and the connecting ear to form a whole, which is convenient for the disassembly and assembly of the pin shaft. Since the protrusion is embedded in the limit groove, the limit groove can limit the rotation of the pin shaft around the connection between the connecting block and the connecting ear, so that the pin shaft can be driven to move in the vertical direction by the cylinder. After the cantilever beam of the gantry crane is flipped to a preset angle, the pin shaft can be controlled by the cylinder to be inserted into the connecting hole of the cantilever beam support to achieve fixation. When the cantilever beam needs to be flipped, the pin shaft can be controlled by the cylinder to move out of the connecting hole of the cantilever beam support.

[0008] Furthermore, a control valve is provided at the upper end of the oil cylinder, and the control valve is connected to the hydraulic oil pipe.

[0009] The above arrangement facilitates controlling the hydraulic pressure of the oil cylinder through the control valve member, thereby driving the pin shaft.

[0010] Furthermore, a flange plate is fixedly provided at the lower end of the oil cylinder, and mounting holes are evenly distributed in a circumference on the flange plate. The oil cylinder is fixed to the oil cylinder mounting seat by passing bolts through the mounting holes.

[0011] The above arrangement facilitates the oil cylinder to be fixed above the support member, and facilitates the oil cylinder to drive the pin shaft to move up and down in the vertical direction.

[0012] Furthermore, the through hole on the connecting block passes through the connecting block, and the distance from the center of the through hole on the connecting block to the end face of the protrusion matches the distance from the center of the through hole on the connecting ear to the bottom face of the limiting groove.

[0013] With the above arrangement, after the protrusion is embedded in the limiting groove, the through hole on the connecting block can be aligned with the through hole on the connecting ear, thereby facilitating the locking member to pass through the through hole for fixed connection.

[0014] Furthermore, the limiting groove is arranged on the center line of the two connecting ears and is located between the two connecting ears.

[0015] The above arrangement facilitates the protrusion to align with the limiting groove and fit into the limiting groove, making disassembly and assembly convenient.

[0016] Furthermore, a chamfer is formed between the lower end surface of the pin shaft and the two side surfaces of the pin shaft.

[0017] The above arrangement serves as a guide for the pin to be inserted into the connecting hole of the support member.

[0018] Furthermore, the upper end of the pin shaft extends horizontally outward to form a limiting portion, and the diameter of the limiting portion is larger than the diameter of the connecting hole of the support member.

[0019] The above arrangement can limit the height to which the pin can descend after the pin is inserted into the connecting hole of the support member, thereby preventing the pin from excessively descending and passing through the connecting hole, resulting in poor fixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structural connection of the present utility model.

[0021] Figure 2 It is the main view of the utility model.

[0022] Figure 3 It is a side view of the present utility model.

[0023] Figure 4 It is a top view of the utility model.

[0024] Figure 5 It is a schematic diagram of the oil cylinder structure in the utility model.

[0025] Figure 6 It is the front view of the pin shaft in the utility model.

[0026] Figure 7 It is a side view of the pin in the utility model.

[0027] Figure 8 It is a top view of the pin in the utility model. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0029] like Figure 1-8As shown, a matching tooling of a cylinder and a pin is used to fix the cantilever beam of a gantry crane after opening, closing and flipping. The upper end of the cylinder 1 is provided with a control valve component 2, which is connected to a hydraulic oil pipe (not marked in the figure). The control valve component 2 is a hydraulically controlled one-way valve. The lower end of the cylinder 1 is fixedly provided with a flange plate 3, and the flange plate 3 is provided with mounting holes 4 that are evenly distributed around the circumference. The cylinder 1 is fixed to the cylinder mounting seat 5 by passing bolts through the mounting holes 4. In this embodiment, the cylinder mounting seat 5 located above the support is fixedly set on the gantry crane 6. The cylinder mounting seat 5 is provided with mounting holes that are evenly distributed around the circumference and match the bolts, so that the cylinder 1 is conveniently fixed above the support and the cylinder 1 drives the pin 7 to move up and down in the vertical direction.

[0030] The output end of the oil cylinder 1 is fixed with a connecting block 8, and the upper end of the pin shaft 7 is provided with more than two connecting ears 9. In this embodiment, there are two connecting ears 9, and the two connecting ears 9 are arranged opposite to each other. A through hole 10 that matches the locking piece is provided on the connecting block 8 and the connecting ear 9. The through hole 10 on the connecting block 8 runs through the connecting block 8. The distance from the center of the through hole 10 on the connecting block 8 to the end face of the protrusion 11 matches the distance from the center of the through hole 10 on the connecting ear 9 to the bottom surface of the limiting groove 12. In this way, after the protrusion 11 is embedded in the limiting groove 12, the through hole 10 on the connecting block 8 can be just aligned with the through hole 10 on the connecting ear 9. This makes it easier for the locking member to pass through the through hole 10 for fixed connection. In this embodiment, the locking member includes a fixed shaft 13 and a latch 14. A limit block 15 is fixedly provided at one end of the fixed shaft 13. The diameter of the limit block 15 is larger than the diameter of the through hole 10. The other end of the fixed shaft 13 is provided with an opening (not marked in the figure) that matches the latch 14. After the fixed shaft 13 passes through the through hole 10, a gasket 16 is sleeved between the connecting ear 9 and the connecting block 8. The connecting block 8 is clamped by the gasket 16 to prevent the connecting block 8 from shaking left and right. Then, the latch 14 passes through the opening on the fixed shaft 13, and the connecting block 8 and the connecting ear 9 are connected to form a whole.

[0031] The upper end surface of the pin shaft 7 is recessed inwardly along the axial direction of the pin shaft 7 to form a limit groove 12. The limit groove 12 is arranged on the center line of the two connecting ears 9 and is located between the two connecting ears 9. In this embodiment, the limit groove 12 is arranged at the center position of the upper end surface of the pin shaft 7, so that the distance from the limit groove 12 to the connecting ears 9 on both sides is equal. The lower end portion of the connecting block 8 extends outward along the length direction of the connecting block 8 to form a protrusion 11 that matches the limit groove 12, so that the protrusion 11 is easy to align with the limit groove 12 and embed into the limit groove 12, making it easy to disassemble and assemble. Chamfered corners are formed between the two side surfaces of the protrusion 11 and the connecting block 8, thereby forming a smooth arc-shaped connection, thereby improving the rigidity of the connection between the protrusion 11 and the connecting block 8.

[0032] In this embodiment, chamfers are formed between the lower end surface of the pin 7 and the two side surfaces of the pin 7, thereby guiding the pin 7 for insertion into the connection hole of the support member 17 provided on the gantry crane. The upper end of the pin 7 extends horizontally outward to form a stopper 71. The diameter of the stopper 71 is larger than the diameter of the connection hole of the support member 17 provided on the gantry crane. This limits the height of the pin 7 after insertion into the connection hole of the support member 17, thereby preventing the pin 7 from descending too far and penetrating the connection hole, which would result in poor fixing effect.

[0033] The working principle of the utility model is as follows: after the protrusion 11 is aligned with the limiting groove 12 between the two connecting ears 9 and embedded in the limiting groove 12, the connecting block 8 is connected to the connecting ear 9 to form a whole through the locking piece through the through hole 10. After the cantilever beam of the gantry crane is flipped to a preset angle, the support member 18 on the cantilever beam is located between the support members 17 provided on the gantry crane, and then the pin shaft 7 is driven to descend by the cylinder 1. After the limiting portion 71 of the pin shaft abuts against the support member 17 on the gantry crane, the driving of the cylinder 1 is stopped to fix the cantilever beam of the gantry crane. When the cantilever beam needs to be flipped, the pin shaft is controlled by the cylinder to move out of the connecting hole of the cantilever beam support member.

Claims

1. A matching fixture for an oil cylinder and a pin, used for being installed on a cantilever beam of a gantry crane, characterized by: It includes an output end of the oil cylinder and a pin shaft, the output end of the oil cylinder is fixed with a connecting block, the upper end of the pin shaft is provided with more than two connecting ears, the connecting block and the connecting ears are provided with through holes matching the locking piece, the upper end surface of the pin shaft is recessed inward along the axial direction of the pin shaft to form a limiting groove, the lower end portion of the connecting block is extended outward along the length direction of the connecting block to form a protrusion matching the limiting groove, and the pin shaft is fixed in the connecting hole of the support member inserted into the cantilever beam under the drive of the oil cylinder.

2. The matching fixture for the oil cylinder and the pin according to claim 1, characterized in that: A control valve is provided at the upper end of the oil cylinder, and the control valve is connected to the hydraulic oil pipe.

3. The tooling for matching an oil cylinder and a pin according to claim 2, characterized in that: A flange plate is fixedly provided at the lower end of the oil cylinder. The flange plate is provided with mounting holes evenly distributed in a circumference. The oil cylinder is fixed to the oil cylinder mounting seat by passing bolts through the mounting holes.

4. The tooling for matching an oil cylinder and a pin according to claim 1, characterized in that: The through hole on the connecting block passes through the connecting block, and the distance from the center of the through hole on the connecting block to the end surface of the protrusion matches the distance from the center of the through hole on the connecting ear to the bottom surface of the limiting groove.

5. The tooling for matching an oil cylinder and a pin according to claim 1, characterized in that: The limiting groove is arranged on the center line of the two connecting ears and is located between the two connecting ears.

6. The tooling for matching an oil cylinder and a pin according to claim 1, characterized in that: A chamfer is formed between the lower end surface of the pin shaft and the two side surfaces of the pin shaft.

7. The tooling for matching an oil cylinder and a pin according to claim 1, characterized in that: The upper end of the pin shaft extends outward horizontally to form a limiting portion, and the diameter of the limiting portion is larger than the diameter of the supporting member connection hole.

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