Pin inserting and pulling device

Abstract

According to the pin inserting and pulling device, a double-lug-plate structure and a single-lug-plate structure are each provided with a pin shaft hinge hole, the double-lug-plate structure and the single-lug-plate structure are connected through a pin shaft, and a through hole is formed in one end of the pin shaft; at least one group of coaxial holes are formed in double lug plates of the double lug plate structure; a limiting pin mounting plate, a guide sleeve and a plug pin structure mounting seat are arranged on the same side of each single lug plate; the guide sleeve is coaxial with the pin shaft hole and is provided with an oblong hole in the horizontal axis direction; a group of coaxial holes I and a group of coaxial holes II are formed in the limiting pin mounting plate; the pin pulling device comprises a pin inserting and pulling device main structure, the pin inserting and pulling device main structure is installed on one side of a double-lug plate of the double-lug plate structure and rotates around the axis of a fixed point, and a long round hole used for installing a first plug pin is formed in the top of the rotating part. Through a mechanism transmission mode, rotary motion is converted into linear reciprocating motion, so that the pin shaft is inserted and pulled out; the problem that an oil cylinder type self-dismounting pin shaft is high in cost is solved.

Description

Technical Field

[0001] The invention relates to the field of pin shafts, and in particular to a pin plugging and pulling device, a mechanical pin plugging and pulling device. Background Art

[0002] Pin: A fastener used to form a hinge connection between two parts; Pin is a standardized fastener, often used to form a hinge connection between two parts, which can be statically fixed or move relative to the connected parts; it is reliable and easy to disassemble; Pin parts are mostly composed of various rotating bodies on the same axis. Among mechanical parts, all shapes with a rotating body and a larger length relative to the diameter are generally classified as pin parts. Pin insertion and extraction device: A device used to insert and remove pins from the hinge; according to the source of power during operation, it can be divided into mechanical, hydraulic, electric, etc. Turntable: A key load-bearing structural component in the main crane, which can be installed with power system, hydraulic system, electrical system, transmission system, counterweight, etc., and it can rotate 360 ​​degrees relative to the lower part. Counterweight: A heavy object used to balance a moving part, usually installed at the tail of the turntable of the crane, and connected to the turntable with a pin. Counterweight self-disassembly and assembly device: a device used to quickly connect the counterweight to the turntable, usually including an automatic overall counterweight lifting device and an automatic pin insertion and extraction device.

[0003] Using a pin to hinge two independent parts is a common structural connection method. A counterweight is usually set at the tail of the turntable of the crane, and the counterweight and the turntable are usually connected by a pin. There are two ways to install the counterweight, one is without self-disassembly function, and the other is with self-disassembly function.

[0004] When the whole machine does not have the function of self-disassembly and assembly of the counterweight, the installation of the pin shaft is usually done manually by plugging and pulling out, which has problems such as low operating efficiency, limited working space, and danger to operators.

[0005] When the whole machine has the function of self-disassembly and assembly of counterweight, it is provided with a single-ear plate at the pin hinge in the counterweight structure, a double-ear plate at the pin hinge in the turntable structure, and a cylinder-type self-disassembly and assembly pin. Four groups of cylinder-type self-disassembly and assembly pins are usually provided. When the self-disassembly and assembly function is used for installation, the single-ear plate and the double-ear plate are first put in place under the action of the self-disassembly and assembly lifting cylinder, and then the cylinder-type self-disassembly and assembly pin is started, and the cylinder-type self-disassembly and assembly pin is automatically extended and accurately inserted into the holes of the single-ear plate and the double-ear plate, thereby connecting the single-ear plate and the double-ear plate into a whole. When the self-disassembly and assembly function is used for disassembly, the cylinder-type self-disassembly and assembly pin is first started to automatically retract, and the cylinder-type self-disassembly and assembly pin is automatically pulled out from the holes of the single-ear plate and the double-ear plate, thereby separating the single-ear plate from the double-ear plate.

[0006] When using a cylinder-type self-disassembling pin shaft, although it solves the problems of low operating efficiency, difficult operation due to limited working space, and personal danger in the working environment caused by manual insertion and extraction of pin shafts, the use of a cylinder-type pin shaft, which is driven by a hydraulic cylinder, requires additional configuration of a corresponding hydraulic system, which significantly increases the cost of use.

[0007] Therefore, it is necessary to develop a new type of mechanical pin insertion and extraction device to overcome the problems of manual operation and solve the high cost problem of the cylinder-type self-disassembly pin shaft. Summary of the invention

[0008] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides a pin insertion and extraction device, which converts rotational motion into linear reciprocating motion through mechanical transmission, thereby realizing the insertion and extraction of the pin shaft; overcomes the problems existing in manual operation, and at the same time solves the high cost problem of the cylinder-type self-disassembly pin shaft.

[0009] Technical solution: A pin plugging and pulling device of the present invention is 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 a pin hinge hole, the double-ear plate structure and the single-ear plate structure are connected by a pin, and a through hole is provided at one end of the pin; at least one group of coaxial holes is arranged on the double-ear plates of the double-ear plate structure, and a limit pin mounting plate, a guide sleeve and a plugging and pulling pin structure mounting seat are provided on the same side of a 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 provided on the limit pin mounting plate, the coaxial hole one is used for limiting the pin pulling device in the pin pulling state, and the coaxial hole two is used for limiting the pin pulling device in the pin plugging state; the pin pulling device includes a main structure of the plugging and pulling pin device, the main structure of the plugging and pulling pin device 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 pin one is opened on the top of the rotating part.

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

[0011] Wherein, the connection between the pin shaft and the main structure of the pin plugging and pulling device is fixed by means of a plug pin, a washer and a cotter pin.

[0012] Among them, the second plug pin and the clip are inserted into the coaxial hole one, and the main structure of the plug-in and pull-out pin device is connected to the double-ear plate structure through a clamping plate, and the clamping plate is fixed by the second bolt and the spring washer.

[0013] Wherein, a grease nipple is provided at the clamping plate.

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

[0015] Wherein, a rotating rod is arranged in the cylinder body, and the rotating rod is fixed in the circular hole of the main structure of the pin plugging and pulling device through a nut and a bolt.

[0016] Wherein, the second latch pin and the clip can also be inserted into the second coaxial hole.

[0017] Before the pin is inserted, the double-ear plate structure and the single-ear plate structure are in a separated state, the pin shaft is located in the guide sleeve of the double-ear plate structure, and the pin shaft and the main structure of the pin plugging and pulling device are positioned by the first pin, the washer, and the cotter pin. At this time, the second pin and the clip are inserted into a coaxial hole, and the main structure of the pin plugging and pulling device is fixed to the support of the double-ear plate structure by the clamping plate with the second bolt and the spring washer, and lubricating oil is injected through the grease nipple for lubrication, and the rotating rod is fixed in the circular hole of the main structure of the pin plugging and pulling device by the nut and the first bolt.

[0018] When preparing the latch, pull out the second latch and the clip from one of the coaxial holes, lift 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 drives the main structure of the pin plugging and pulling device to rotate clockwise together. Under the action of force transmission, the pin shaft is pushed to move to the left in the guide sleeve of the double-ear plate structure, and passes 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 turn. Finally, insert the second latch and the clip into the second coaxial hole and fix them to complete the latching action.

[0019] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the present invention converts rotational motion into linear reciprocating motion through the transmission of a mechanism, and replaces the expensive hydraulic cylinder pin shaft and the hydraulic system related thereto with a lower structural component cost, and a set of pin plugging and pulling devices can realize the synchronous plugging and pulling of multiple pin shafts, which is simple, efficient and low-cost; the force application point is transmitted through a rotating rod, and the force application point is far away from the dangerous area of ​​the operation, which has good safety; the pin plugging and pulling device has a compact structure, occupies a small space, and is more flexible and efficient than manual pin plugging and pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a prior art oil cylinder type self-disassembly pin shaft;

[0021] Figure 2 It is a schematic diagram of the installation of the pin insertion and extraction device of the present invention before the pin is inserted, that is, after the pin is pulled out;

[0022] Figure 3 It is a schematic diagram of the installation of the pin insertion and extraction device of the present invention after the pin is inserted, that is, before the pin is extracted;

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

[0024] Figure 5 It is a structural schematic diagram of the pin shaft of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the main structure of the pin plugging and pulling device of the present invention;

[0026] In the figure, 1 is a double-ear plate structure; 2 is a single-ear plate structure; 3 is a pin shaft; 4 is the main structure of the plug-in pin device; 5 is a plug pin 1; 6 is a washer; 7 is a cotter pin; 8 is a plug pin 2; 9 is a clip; 10 is a rotating rod; 11 is a nut; 12 is a bolt 1; 13 is a clamping plate; 14 is a grease nipple; 15 is a bolt 2; 16 is a spring washer; 17 is a limit pin mounting plate; 18 is a guide sleeve; 19 is a mounting seat for the plug-in pin structure; 20 is an oblong hole; 21 is a round hole; 22 is a coaxial hole 1; 23 is a coaxial hole 2; 24 is a cylinder; 25 is a rotating part; and 26 is an intermediate plate. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0028] The plug-in pin device of the present invention comprises a double-ear plate structure 1, wherein the double-ear plate structure 1 and the single-ear plate structure 2 are both provided with a pin shaft hinge hole, the double-ear plate structure 1 and the single-ear plate structure 2 are connected by a pin shaft 3, and a through hole is provided at one end of the pin shaft 3; at least one group of coaxial holes are provided on the double-ear plates of the double-ear plate structure 1, and a limit pin mounting plate 17, a guide sleeve 18 and a plug-in pin structure mounting seat 19 are provided on the same side of a single ear plate; the guide sleeve 18 is coaxial with the pin shaft hole and is provided with an oblong hole 20 along the horizontal axis direction, and a group of coaxial holes 1 22 and a group of coaxial holes 23 are provided on the limit pin mounting plate 17, the coaxial hole 1 22 is used for limiting the position of the pin pulling device in the pin pulling state, and the coaxial hole 23 is used for limiting the position of the pin pulling device in the pin pulling state; the pin pulling device comprises a plug-in pin device main structure 4, the plug-in pin device main structure 4 is installed on one side of the double-ear plate of the double-ear plate structure 1, rotates around the fixed point axis, and an oblong hole 20 for installing a pin 1 5 is opened on the top of the rotating part 25.

[0029] Among them, 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 shaft 3 and the main structure 4 of the plug-in pin device is fixed by a plug-in pin 5, a washer 6, and a cotter pin 7. The plug-in pin 8 and the clip 9 are inserted into the coaxial hole 12, and the main structure 4 of the plug-in pin device is connected to the double-ear plate structure 1 through the clamping plate 13, and the clamping plate 13 is fixed by a bolt 2 15 and a spring washer 16. A grease nipple 14 is provided at the clamping plate 13. The main structure 4 of the plug-in pin device includes a cylinder 24, a rotating part 25 and an intermediate plate 26, and the cylinder 24 is provided with a circular hole 21. A rotating rod 10 is provided in the cylinder 24, and the rotating rod 10 is fixed in the circular hole 21 of the main structure 4 of the plug-in pin device by a nut 11 and a bolt 12. The plug-in pin 8 and the 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 in a separated state, the pin shaft 3 is located in the guide sleeve 18 of the double-ear plate structure 1, and the pin shaft 3 and the main structure 4 of the pin plugging and pulling device are positioned by the pin 1 5, the washer 6, and the cotter pin 7. At this time, the pin 2 8 and the clip 9 are inserted into the coaxial hole 1 22, and the main structure 4 of the pin plugging and pulling device is fixed to the support of the double-ear plate structure 1 by the clamping plate 13 with the bolt 2 15 and the spring washer 16, and lubricated by injecting lubricating oil through the grease nipple 14, and the rotating rod 10 is fixed to the circular hole 21 of the main structure 4 of the pin plugging and pulling device by the nut 11 and the bolt 12.

[0031] When preparing to latch, pull out the second latch 8 and the clip 9 from the coaxial hole 1 22, lift the single-ear plate structure 2 to the position 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 plugging and pulling device to rotate clockwise together, and under the action of force transmission, push the pin shaft 3 to move 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 turn, and finally insert the second latch 8 and the clip 9 into the coaxial hole 23 and fix them to complete the latching action.

[0032] The present invention converts rotary motion into linear reciprocating motion by means of mechanism transmission, and replaces expensive hydraulic cylinder pin shafts and the hydraulic system related thereto with lower structural component costs. Moreover, a set of pin plugging and pulling devices can realize the synchronous plugging and pulling of multiple pin shafts, which is simple, efficient and low-cost. The force application point is transmitted through a rotating rod, and the force application point is far away from the dangerous operation area, which has good safety. The pin plugging and pulling device has a compact structure, occupies a small space, and is more flexible and efficient than manual pin plugging and pulling.

Claims

1. A pin insertion and extraction device, characterized in that: The invention comprises a double-ear plate structure (1), wherein both the double-ear plate structure (1) and the single-ear plate structure (2) are provided with a pin shaft hinge hole, the double-ear plate structure (1) and the single-ear plate structure (2) are connected via a pin shaft (3), and a through hole is provided at one end of the pin shaft (3); at least one group of coaxial holes is provided on the double-ear plates of the double-ear plate structure (1), and a limit pin mounting plate (17), a guide sleeve (18) and a plug-in pin structure mounting seat (19) are provided on the same side of a single ear plate; the guide sleeve (18) is coaxial with the pin shaft hole and is provided with an oblong hole along the horizontal axis direction. The limit pin mounting plate (17) is provided with a group of coaxial holes (22) and a group of coaxial holes (23), the coaxial hole (22) is used for limiting the position of the pin pulling device in the pin pulling state, and the coaxial hole (23) is used for limiting the position of the pin pulling device in the pin plugging state; the pin pulling device comprises a main structure (4) of the pin plugging and pulling device, the main structure (4) of the pin plugging and pulling device is installed on one side of the double ear plate of the double ear plate structure (1), rotates around the fixed point axis, and the top of the rotating part (25) is provided with an oblong hole (20) for installing the plug pin (5).

2. The pin insertion and extraction 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 pin insertion and extraction device according to claim 1, characterized in that: The connection between the pin shaft (3) and the main structure of the pin plugging and pulling device (4) is fixed by means of a first plug pin (5), a washer (6) and a cotter pin (7).

4. The pin insertion and extraction device according to claim 1, characterized in that: The second plug pin (8) and the clip (9) are inserted into the coaxial hole (22); the main structure (4) of the plug-in / pull-out pin device is connected to the double-ear plate structure (1) via a clip (13); and the clip (13) is fixed via a second bolt (15) and a spring washer (16).

5. The pin insertion and extraction device according to claim 4, characterized in that: The clamping plate (13) is provided with a grease nipple (14).

6. The pin insertion and extraction device according to claim 5, characterized in that: The main structure (4) of the pin insertion and extraction device comprises a cylinder (24), a rotating part (25) and an intermediate plate (26); the cylinder (24) is provided with a circular hole (21).

7. The pin insertion and extraction device according to claim 6, characterized in that: A rotating rod (10) is arranged inside the cylinder (24), and the rotating rod (10) is fixed in a circular hole (21) of the main structure (4) of the pin insertion and extraction device through a nut (11) and a bolt (12).

8. The pin insertion and extraction device according to claim 4, characterized in that: The second latch pin (8) and the clip (9) can also be inserted into the second coaxial hole (23).

9. The plug-in and pull-out pin device according to any one of claims 1 to 8, characterized in that: Before the pin is inserted, the double-ear plate structure (1) and the single-ear plate structure (2) are in a separated state, 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 extraction device are positioned by means of the first pin (5), the washer (6) and the cotter pin (7), at which time the second pin (8) and the clamp (9) are inserted into the first coaxial hole (22), the main structure (4) of the pin insertion and extraction 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), lubricated by injecting lubricating oil through the grease nipple (14), and the rotating rod (10) is fixed to the round hole (21) of the main structure (4) of the pin insertion and extraction device by means of the nut (11) and the first bolt (12).

10. The pin insertion and extraction device according to claim 9, characterized in that: When preparing to insert the pin, the second pin (8) and the clip (9) are pulled out from the coaxial hole (22), the single-ear plate structure (2) is lifted to the position where it coincides with the through hole of the double-ear plate structure (1), and the rotating rod (10) is rotated clockwise. The rotating rod (10) drives the main structure (4) of the pin insertion and extraction device to rotate clockwise together, and under the action of force transmission, the pin shaft (3) is pushed to move leftward in the guide sleeve (18) of the double-ear plate structure (1), and passes 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 turn. Finally, the second pin (8) and the clip (9) are inserted into the coaxial hole (23) and fixed, and the pin insertion action is completed.

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