A plug pin device

Abstract

The application discloses a plug pin device, both the double-ear plate structure and the single-ear plate structure are provided with pin shaft hinge holes, the double-ear plate structure and the single-ear plate structure are connected through the pin shaft, one end of the pin shaft is provided with a through hole; at least one group of coaxial holes are arranged on the double-ear plate of the double-ear plate structure, a limiting pin mounting plate, a guide sleeve and a plug pin structure mounting seat are arranged on the same side of the single ear plate; the guide sleeve is coaxial with the pin shaft hole and is provided with an oblong hole along the horizontal axis direction, a group of coaxial holes one and a group of coaxial holes two are arranged on the limiting pin mounting plate; the plug pin device comprises a plug pin device main structure, the plug pin device main structure is installed on one side of the double-ear plate of the double-ear plate structure, rotates around the fixed point axis, and an oblong hole for installing the plug pin one is formed in the top of the rotating part. The application converts the rotary motion into the linear reciprocating motion in the mode of mechanism transmission, so that the plug-in and pull-out of the pin shaft are realized; and the high cost problem of the oil cylinder type self-disassembly pin shaft is solved.

Description

Technical Field

[0001] This invention relates to the field of pins, and more particularly to a pin insertion and removal device, a mechanical pin insertion and removal device. Background Technology

[0002] Pins: Fasteners used to form hinged connections between two parts; pins are a type of standardized fastener, commonly used to form hinged connections between two parts, allowing for both static fixation and relative movement with the connected parts; they are reliable and easy to disassemble; pin-type parts are mostly composed of rotating bodies on the same axis. In mechanical parts, any shape with a rotating surface and a relatively large length dimension compared to its diameter is generally classified as a pin-type part. Insertion and Removal Pin Device: A device used to insert and remove pins from hinged joints; depending on the source of power during operation, it can be divided into mechanical, hydraulic, and electric types. Turntable: A key load-bearing structural component in the main body of a crane, internally housing the power system, hydraulic system, electrical system, transmission system, counterweight, etc. It can rotate 360 ​​degrees relative to the lower part. Counterweight: A heavy object used to balance a moving part, usually installed at the rear of the crane's turntable and connected to the turntable by a pin. Counterweight self-assembly and disassembly device: A device for quickly connecting and positioning a counterweight to a turntable, typically including an automatic counterweight lifting device and an automatic pin insertion and removal device.

[0003] Using a pin to hinge two independent components is a common structural connection method. A counterweight is usually installed at the rear of the crane's turntable, and the counterweight is typically connected to the turntable using a pin. There are two methods for installing the counterweight: one without self-disassembly and the other with self-disassembly.

[0004] When the machine does not have a self-disassembly and assembly function for counterweights, the installation of the pins usually requires manual insertion and removal, which results in problems such as low operating efficiency, limited working space, and danger to operators.

[0005] When the machine has a self-disassembly and assembly function for the counterweight, it includes a single lug plate at the pin hinge in the counterweight structure, a double lug plate at the pin hinge in the turntable structure, and a hydraulic cylinder-type self-disassembly and assembly pin. Typically, four sets of hydraulic cylinder-type self-disassembly and assembly pins are provided. During installation using the self-disassembly and assembly function, the single and double lug plates are first positioned by the self-disassembly and assembly lifting cylinder. Then, the hydraulic cylinder-type self-disassembly and assembly pins are activated, automatically extending and accurately inserting into the holes of the single and double lug plates, thus connecting them as a whole. During disassembly using the self-disassembly and assembly function, the hydraulic cylinder-type self-disassembly and assembly pins are first activated, causing them to retract automatically. The hydraulic cylinder-type self-disassembly and assembly pins are then automatically pulled out from the holes of the single and double lug plates, thus separating them.

[0006] While using a hydraulic cylinder-type self-disassembly and assembly pin operation solves the problems of low operational efficiency, limited working space, high operational difficulty, and personal danger in the working environment associated with manual pin insertion and removal, the use of a hydraulic cylinder-type pin, driven by a hydraulic cylinder, requires the additional configuration of a corresponding hydraulic system, significantly increasing the operating cost.

[0007] Therefore, it is necessary to develop a new type of mechanical insertion and removal pin device to overcome the problems of manual operation, while also solving the problem of high cost of hydraulic cylinder self-disassembly and assembly pins. Summary of the Invention

[0008] Purpose of the invention: To address the shortcomings and defects of existing technologies, this invention provides a pin insertion and removal device that converts rotary motion into linear reciprocating motion through a mechanism transmission, thereby realizing the insertion and removal of the pin; overcoming the problems of manual operation, and solving the problem of high cost of hydraulic cylinder-type self-disassembly and assembly pins.

[0009] Technical Solution: The present invention provides a pin insertion / removal device, characterized in that: it includes a double-ear plate structure, both the double-ear plate structure and the single-ear plate structure are provided with pin hinge holes, the double-ear plate structure and the single-ear plate structure are connected by a pin, one end of the pin is provided with a through hole; the double-ear plate of the double-ear plate structure is provided with at least one set of coaxial holes, and a limiting pin mounting plate, a guide sleeve and a pin insertion / removal structure mounting seat are provided on the same side of the single ear plate; the guide sleeve is coaxial with the pin hole and is provided with an elongated hole along the horizontal axis direction, the limiting pin mounting plate is provided with one set of coaxial hole one and one set of coaxial hole two, the coaxial hole one is used for limiting the pin removal device in the pin removal state, and the coaxial hole two is used for limiting the pin removal device in the pin insertion state; the pin removal device includes a main structure of the pin insertion / removal device, the main structure of the pin insertion / removal device is installed on one side of the double-ear plate of the double-ear plate structure, rotates around the axis of the fixed point, and the top of the rotating part is provided with an elongated hole for installing the first pin.

[0010] The single-ear plate structure is located between the two ear plates of the double-ear plate structure.

[0011] The main structure connection of the pin shaft and the plug-in pin device is fixed by a plug pin, a washer, and a cotter pin.

[0012] In this device, a second pin and a clip are inserted into the first coaxial hole. The main structure of the pin insertion and removal device is connected to the double ear plate structure through a clamping plate. The clamping plate is fixed by a second bolt and a spring washer.

[0013] The card plate is equipped with a grease fitting.

[0014] The main structure of the insertion and removal pin device includes a cylinder, a rotating part and an intermediate plate, and the cylinder has a circular hole.

[0015] The cylinder is equipped with a rotating rod, which is fixed in the round hole of the main structure of the insertion and removal pin device by a nut and a bolt.

[0016] The coaxial hole can also accommodate a pin or a clip.

[0017] Before the pin is inserted, the double-ear plate structure and the single-ear plate structure are separated. The pin shaft is located in the guide sleeve of the double-ear plate structure. The pin shaft and the main structure of the pin insertion and removal device are positioned by the first pin, washer, and cotter pin. At this time, the second pin and the clip are inserted into one coaxial hole. The main structure of the pin insertion and removal device is fixed to the support of the double-ear plate structure by the clamp plate, bolt two, and spring washer. Lubricating oil is injected through the grease nipple for lubrication. The rotating rod is fixed in the round hole of the main structure of the pin insertion and removal device by the nut and bolt one.

[0018] When preparing the pin, pull out pin two and the clip from one of the coaxial holes, raise the single-ear plate structure to the position where it coincides with the through hole of the double-ear plate structure, rotate the rotating rod clockwise, and the rotating rod will drive the main structure of the pin insertion and removal device to rotate clockwise together. Under the action of force transmission, the pin shaft will be pushed to the left in the guide sleeve of the double-ear plate structure, passing through the through hole of the double-ear plate structure and the through hole on the other side of the single-ear plate structure in sequence. Finally, insert pin two and the clip into coaxial hole two and fix them to complete the pin insertion action.

[0019] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The present invention converts rotary motion into linear reciprocating motion through mechanical transmission, replacing the expensive hydraulic cylinder pin and related hydraulic system with a lower structural component cost, and one set of pin insertion and removal device can realize the synchronous insertion and removal of multiple pins, which is simple, efficient and low cost; the force application point is transmitted through the rotating rod, and the force application point is far away from the dangerous working area, which is safe; the pin insertion and removal device has a compact structure, occupies little space, and is more flexible and efficient than manual pin insertion and removal. Attached Figure Description

[0020] Figure 1 A schematic diagram of the existing hydraulic cylinder-type self-disassembly and assembly pin structure;

[0021] Figure 2 This is a schematic diagram of the installation of the insertion and removal pin device of the present invention before the insertion of the pin, i.e. after the removal of the pin.

[0022] Figure 3 This is a schematic diagram of the installation of the insertion and removal pin device of the present invention after the pin is inserted, that is, before the pin is removed.

[0023] Figure 4 This is a schematic diagram of the double-ear plate structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the pin structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the main structure of the insertion and removal pin device of the present invention;

[0026] In the diagram, 1 is a double-ear plate structure; 2 is a single-ear plate structure; 3 is a pin; 4 is the main structure of the insertion and removal pin device; 5 is pin one; 6 is a washer; 7 is a cotter pin; 8 is pin two; 9 is a clip; 10 is a rotating rod; 11 is a nut; 12 is bolt one; 13 is a retaining plate; 14 is a grease fitting; 15 is bolt two; 16 is a spring washer; 17 is a limit pin mounting plate; 18 is a guide sleeve; 19 is an insertion and removal pin structure mounting base; 20 is an oblong hole; 21 is a round hole; 22 is coaxial hole one; 23 is coaxial hole two; 24 is a cylinder; 25 is a rotating part; and 26 is an intermediate plate. Detailed Implementation

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] The insertion and removal pin device of the present invention includes a double-ear plate structure 1. Both the double-ear plate structure 1 and the single-ear plate structure 2 are provided with pin hinge holes. The double-ear plate structure 1 and the single-ear plate structure 2 are connected by a pin 3. One end of the pin 3 is provided with a through hole. At least one set of coaxial holes are provided on the double-ear plate of the double-ear plate structure 1. On the same side of the single ear plate, a limiting pin mounting plate 17, a guide sleeve 18 and an insertion and removal pin structure mounting seat 19 are provided. The guide sleeve 18 is coaxial with the pin hole and is provided with an elongated hole 20 along the horizontal axis. The limiting pin mounting plate 17 is provided with a set of coaxial holes 1 22 and a set of coaxial holes 23. The coaxial holes 1 22 are used to limit the pin removal device in the pin removal state, and the coaxial holes 23 are used to limit the pin removal device in the pin insertion state. The pin removal device includes an insertion and removal pin device main structure 4. The insertion and removal pin device main structure 4 is installed on one side of the double-ear plate of the double-ear plate structure 1 and rotates around the axis of the fixed point. The top of the rotating part 25 is provided with an elongated hole 20 for installing the first pin 5.

[0029] The single-ear plate structure 2 is located between the two ear plates of the double-ear plate structure 1. The connection between the pin 3 and the main structure 4 of the pin-removing device is secured by a pin 5, a washer 6, and a cotter pin 7. A pin 8 and a clip 9 are inserted into the coaxial hole 22. The main structure 4 of the pin-removing device is connected to the double-ear plate structure 1 via a clamping plate 13, which is secured by a bolt 15 and a spring washer 16. A grease nipple 14 is provided at the clamping plate 13. The main structure 4 of the pin-removing device includes a cylinder 24, a rotating part 25, and an intermediate plate 26. The cylinder 24 has a circular hole 21. A rotating rod 10 is provided inside the cylinder 24, and the rotating rod 10 is secured to the circular hole 21 of the main structure 4 of the pin-removing device by a nut 11 and a bolt 12. A pin 8 and a clip 9 can also be inserted into the coaxial hole 23.

[0030] Before the pin is inserted, the double-ear plate structure 1 and the single-ear plate structure 2 are separated. The pin shaft 3 is located in the guide sleeve 18 of the double-ear plate structure 1. The pin shaft 3 and the main structure 4 of the pin insertion and removal device are positioned by the first pin 5, the washer 6, and the cotter pin 7. At this time, the second pin 8 and the clip 9 are inserted into the coaxial hole 22. The main structure 4 of the pin insertion and removal device is fixed to the support of the double-ear plate structure 1 by the clamping plate 13 with the second bolt 15 and the spring washer 16. Lubricating oil is injected through the grease nipple 14 for lubrication. The rotating rod 10 is fixed in the round hole 21 of the main structure 4 of the pin insertion and removal device by the nut 11 and the first bolt 12.

[0031] When preparing the pin, pull out the second pin 8 and the clip 9 from the coaxial hole 22, lift the single ear plate structure 2 to coincide with the through hole of the double ear plate structure 1, rotate the rotating rod 10 clockwise, and the rotating rod 10 will drive the main structure 4 of the pin insertion and removal device to rotate clockwise together. Under the action of force transmission, the pin shaft 3 will be pushed to the left in the guide sleeve 18 of the double ear plate structure 1, and pass through the through hole of the double ear plate structure 1 and the through hole on the other side of the single ear plate structure 2 in sequence. Finally, insert the second pin 8 and the clip 9 into the coaxial hole 23 and fix them to complete the pin insertion action.

[0032] This invention converts rotary motion into linear reciprocating motion through a mechanism transmission, replacing expensive hydraulic cylinder pins and related hydraulic systems with lower structural component costs. Furthermore, a single pin insertion and removal device can simultaneously insert and remove multiple pins, making it simple, efficient, and cost-effective. The force application point is transmitted through a rotating rod, which is far from the hazardous work area, ensuring good safety. The pin insertion and removal device has a compact structure, occupies little space, and is more flexible and efficient than manual pin insertion and removal.

Claims

1. A plug-in / plug-out pin device, characterized in that: The structure includes a double-ear plate structure (1), both of which have pin hinge holes. The double-ear plate structure (1) and the single-ear plate structure (2) are connected by a pin (3), one end of which has a through hole. At least one set of coaxial holes is provided on the double-ear plate of the double-ear plate structure (1). On the same side of each single ear plate, there is a limiting pin mounting plate (17), a guide sleeve (18), and a plug-in pin structure mounting seat (19). The guide sleeve (18) and the pin of the double-ear plate structure (1) are connected by a pin. The shaft hinge hole is coaxial and has an elongated hole (20) along the horizontal axis. The limiting pin mounting plate (17) has a set of coaxial holes one (22) and a set of coaxial holes two (23). The coaxial holes one (22) are used for limiting the insertion and removal of the pin device in the pin-pulling state, and the coaxial holes two (23) are used for limiting the insertion and removal of the pin device in the pin-pulling state. The insertion and removal of the pin device includes a main structure (4) of the insertion and removal of the pin device. The main structure (4) of the insertion and removal of the pin device is installed on one side of the double ear plate of the double ear plate structure (1) and rotates around the axis of the fixed point. The moving part (25) has an elongated hole at the top for installing the first pin (5); the connection between the pin shaft (3) and the main structure (4) of the pin-pulling device is fixed by the first pin (5), the washer (6), and the cotter pin (7); the second pin (8) and the clip (9) are inserted into the first coaxial hole (22); the main structure (4) of the pin-pulling device is connected to the double-ear plate structure (1) by the clamping plate (13); the clamping plate (13) is fixed by the second bolt (15) and the spring washer (16); the clamping plate (13) A grease nipple (14) is provided; the main structure (4) of the plug-in pin device includes a cylinder (24), a rotating part (25) and an intermediate plate (26). The cylinder (24) has a round hole (21); a rotating rod (10) is provided inside the cylinder (24). The rotating rod (10) is fixed in the round hole (21) of the main structure (4) of the plug-in pin device by a nut (11) and a bolt (12); a second pin (8) and a clip (9) can also be inserted into the second coaxial hole (23).

2. The insertion / removal pin device according to claim 1, characterized in that: The single-ear plate structure (2) is located between the two ear plates of the double-ear plate structure (1).

3. The insertion / removal pin device according to any one of claims 1-2, characterized in that: Before the pin is inserted, the double-ear plate structure (1) and the single-ear plate structure (2) are separated. The pin shaft (3) is located in the guide sleeve (18) of the double-ear plate structure (1). The pin shaft (3) and the main structure (4) of the pin insertion and removal device are positioned by the first pin (5), the washer (6), and the cotter pin (7). At this time, the second pin (8) and the clip (9) are inserted into the first coaxial hole (22). The main structure (4) of the pin insertion and removal device is fixed to the support of the double-ear plate structure (1) by the clamp plate (13) with the second bolt (15) and the spring washer (16). Lubricating oil is injected through the grease nipple (14) for lubrication. The rotating rod (10) is fixed in the round hole (21) of the main structure (4) of the pin insertion and removal device by the nut (11) and the first bolt (12).

4. The insertion / removal pin device according to claim 3, characterized in that: When preparing the pin, pull out the second pin (8) and the clip (9) from the first coaxial hole (22), lift the single ear plate structure (2) to the point where it coincides with the through hole of the double ear plate structure (1), rotate the rotating rod (10) clockwise, and the rotating rod (10) drives the main structure (4) of the pin insertion and removal device to rotate clockwise together. Under the action of force transmission, the pin shaft (3) is pushed to the left in the guide sleeve (18) of the double ear plate structure (1), passing through the through hole on one side of the double ear plate structure (1), the hole on the single ear plate structure (2), and the through hole on the other side of the double ear plate structure (1) in sequence. Finally, insert the second pin (8) and the clip (9) into the second coaxial hole (23) and fix them to complete the pin insertion action.

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