Safety locking pin device of front supporting leg assembly of wheel excavator
By designing a safety locking pin device including a steel pipe main body, a limiting groove and a locking pin part, the problem of easy loss and low safety of the safety locking pin device of the front leg of the wheel excavator in the prior art is solved, and the function of preventing drop and not being easily lost is realized.
Patent Information
- Application Number
- CN202422172837.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-05
AI Technical Summary
The existing wheeled excavator front legs safety lock pin device needs to be completely disassembled and assembled in working state, which is easy to be lost and reduces safety during walking.
A safety locking pin device including a steel pipe main body, a limiting groove and a locking pin part is designed. The limiting pin is limited through the three-stage limiting grooves. The inner groove and the outer groove correspond to the position states where the pin shaft is inserted and pulled out respectively. When used, the limiting pin slides into the inner groove and slides into the outer groove when not in use, so as to prevent the limiting legs from falling when walking, and connect the steel pipe main body and the locking pin part through the connecting piece to prevent loss.
The limit legs are realized to prevent falling while walking, and the safety factor is improved, without repeated complete disassembly and assembly, which is not easy to lose.
Smart Images
Figure CN222949102U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of excavator production, in particular to a safety locking pin device for a front outrigger assembly of a wheeled excavator. Background Art
[0002] A wheeled excavator is a small to medium-sized construction machinery commonly used in the construction of ditches on both sides of roads. It has strong maneuverability and high speed. However, the wheel excavator is subject to strong bumps during driving. It is very likely that the wheel excavator legs will suddenly fall due to gravity and driving bumps, causing the vehicle to overturn and cause a traffic accident. In order to avoid this situation, a safety locking pin device is usually provided on the rear side plate of the cantilever beam of the front leg to limit the fall of the leg.
[0003] The existing wheeled excavator front leg safety locking pin device limits the leg from falling by directly inserting the pin shaft. Before working, all the pin shafts must be removed. Over time, the operator is likely to lose the pin shaft, which also virtually reduces the safety during walking.
[0004] Therefore, the inventors want to solve the problem of designing a device that can prevent the legs from falling while walking, improve the safety factor, and does not need to be completely disassembled and assembled repeatedly and is not easy to lose. Utility Model Content
[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a safety locking pin device for the front outrigger assembly of a wheeled excavator, which can limit the outriggers to prevent them from falling while walking, thereby improving the safety factor, eliminating the need for repeated complete disassembly and assembly, and preventing them from being easily lost.
[0006] The technical solution adopted by the device of the utility model is: a safety locking pin device of the front leg assembly of a wheeled excavator, which is arranged on the end surface of the rear side plate of the front leg cantilever beam, and a through hole opposite to the position of the safety locking pin device is opened on the rear side plate of the front leg cantilever beam, and the safety locking pin device comprises a steel pipe main body, and a limiting groove is opened on the steel pipe main body, and the limiting groove comprises a middle groove, and the two ends of the middle groove are respectively connected with an inner groove and an outer groove, and a locking pin part is slidably and plug-inly arranged on the inner side of the steel pipe main body, and the locking pin part comprises a pin shaft, and the end of the pin shaft is connected with a circular end plate, and the end of the circular end plate is connected with a handle, and a limiting pin is connected to the circumferential surface of the pin shaft, and the limiting pin is slidably matched with the limiting groove.
[0007] Furthermore, the inner groove and the outer groove are respectively arranged perpendicular to the middle groove, and the inner groove and the outer groove are respectively arranged on both sides of the middle groove and are connected through the middle groove.
[0008] Furthermore, the widths of the inner groove, outer groove and middle groove are the same, and the arcs of the inner groove and outer groove along the circumferential surface are both 92°.
[0009] Furthermore, the difference between the diameter of the limiting pin and the width of the middle groove is no more than 2 mm.
[0010] Furthermore, the length of the pin shaft is not less than twice that of the steel pipe body, and the pin shaft is plug-fitted with the through hole.
[0011] Furthermore, it comprises a connecting ear plate, and the connecting ear plate is arranged on the circumferential surface of the steel pipe body.
[0012] Furthermore, a light hole is opened on the connecting ear plate, a connecting bolt is inserted into the inner side of the light hole, a nut is threadedly connected to the outer side of the end of the connecting bolt, a copper nose is arranged between the nut and the connecting ear plate and on the outer side of the connecting bolt, a connecting piece is fixedly arranged on the inner side of the end of the copper nose, and a ring is connected to the tail of the connecting piece.
[0013] Furthermore, the collar is sleeved and arranged on the outside of the handle.
[0014] The beneficial effects of the utility model device are:
[0015] 1. The utility model adopts a three-stage limit groove to limit the limit pin. The inner groove and the outer groove correspond to the position states of the pin shaft when inserted and pulled out respectively. When in use, the limit pin slides into the inner groove, and when not in use, the limit pin slides into the outer groove, thereby realizing the function of limiting the support leg to prevent it from falling during walking, improving the safety factor, and eliminating the need for repeated complete disassembly and assembly.
[0016] 2. In order to ensure that the locking pin portion will not be easily lost, the utility model connects the steel pipe body and the locking pin portion through a connecting piece, thereby achieving the function of not being easily lost. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a structural view of the first embodiment of the utility model in an unrestricted state.
[0018] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.
[0019] Figure 3 This is a structural view of the limiting state of the first embodiment of the utility model.
[0020] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.
[0021] Figure 5 This is a structural view of the first embodiment of the utility model.
[0022] Figure 6 This is a structural view of the second embodiment of the present utility model.
[0023] Explanation of the reference numerals: 1-steel pipe body; 11-inner groove; 12-middle groove; 13-outer groove; 2-locking pin; 21-pin shaft; 22-limiting pin; 23-circular end plate; 24-handle; 3-connecting ear plate; 4-connecting bolt; 5-nut; 6-connecting piece; 7-ring; 8-copper nose. DETAILED DESCRIPTION
[0024] The following is a further description of the present invention in conjunction with specific embodiments. These embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to the application.
[0025] Example 1: See Figures 1 to 5 This is a structural view of the first embodiment of the utility model in an unrestricted state. Figure 1 A partial enlarged view of the middle A, the structural view of the limiting state of the first embodiment, Figure 3A partial enlarged view at B in the middle and a structural view of the first embodiment, a safety locking pin device of the front outrigger assembly of a wheeled excavator is arranged on the end surface of the rear side plate of the front outrigger cantilever beam, and a through hole corresponding to the position of the safety locking pin device is opened on the rear side plate of the front outrigger cantilever beam. The safety locking pin device includes a steel pipe body 1, and a limit groove is opened on the steel pipe body 1. The limit groove includes a middle groove 12, and the two ends of the middle groove 12 are respectively connected to an inner groove 11 and an outer groove 13, and the inner groove 11 and the outer groove 13 are respectively The inner groove 11 and the outer groove 13 are arranged vertically with the middle groove 12, respectively, and the inner groove 11, the outer groove 13 and the middle groove 12 have the same width, and the arc of the inner groove 11 and the outer groove 13 along the circumferential surface is 92°. The locking pin part 2 is slidably and plugged in the inner side of the steel pipe body 1, and the locking pin part 2 includes a pin shaft 21, and the end of the pin shaft 21 is connected with a circular end plate 23, which is used for the axial movement of the limit pin 22 shaft 21, and the end of the circular end plate 23 is connected to the inner side of the steel pipe body 1. The handle 24 is connected to the top, which is convenient for the operator to hold the handle 24 to perform twisting, pushing and pulling operations. A limit pin 22 is connected to the circumferential surface of the pin shaft 21, and the limit pin 22 slidably cooperates with the limit groove. The difference between the diameter of the limit pin 22 and the width of the middle groove 12 is not more than 2mm. The length of the pin shaft 21 is not less than twice that of the steel pipe body 1. The pin shaft 21 is plugged into the through hole. The operator holds the handle 24 and pushes and slides the pin shaft 21 and the limit pin 22 along the middle groove 12 and the inner groove 11, so that the end of the pin shaft 21 can be inserted into the positioning hole set on the supporting leg for limiting and limiting the movement state of the supporting leg. The operator holds the handle 24 and pushes and slides the pin shaft 21 and the limit pin 22 along the middle groove 12 and the outer groove 13, so that the limit pin 22 is stuck in the end of the inner side of the outer groove 13. In this process, the pin shaft 21 gradually leaves the positioning hole, and is limited by the limit pin 22 and the outer groove 13, thereby releasing the restriction on the supporting leg so that it can work normally.
[0026] Example 2: See Figure 6This is a structural view of the second embodiment of the utility model. In order to further ensure that the locking pin part 2 will not fall off or be lost, the utility model also includes a connecting ear plate 3, which is arranged on the circumferential surface of the steel pipe body 1, and a light hole is opened on the connecting ear plate 3. A connecting bolt 4 is inserted and arranged on the inner side of the light hole. A nut 5 is threadedly connected to the outer side of the end of the connecting bolt 4. A copper nose 8 is arranged between the nut 5 and the connecting ear plate 3 and on the outer side of the connecting bolt 4. A threaded section and a smooth section are arranged on the connecting bolt 4. By mutually locking the connecting bolt 4 and the nut 5, the copper nose 8 can be prevented from falling off and can be It can rotate freely around the smooth section of the connecting bolt 4. A connecting piece 6 is fixedly provided on the inner side of the end of the copper nose 8. A ring 7 is connected to the tail of the connecting piece 6. The ring 7 is sleeved on the outside of the handle 24. The ring 7 is connected to the copper nose 8 through the connecting piece 6. The connecting piece 6 can be a rope, a chain, a wire rope, or other flexible strip-shaped objects. The ring 7 is preferably an object that simulates a key ring structure and can be installed and removed by rotation. With the above structure, when the locking pin part 2 accidentally falls off, the locking pin part 2 can be pulled by the connecting piece 6 to prevent it from falling off or being lost completely.
[0027] The utility model adopts a three-stage limit groove design to limit the limit pin 22. The inner groove 11 and the outer groove 13 correspond to the position states of the pin shaft 21 when inserted and pulled out respectively. When in use, the limit pin 22 slides into the inner groove 11, and when not in use, the limit pin 22 slides into the outer groove 13, thereby realizing the function of limiting the support leg to prevent it from falling during walking, improving the safety factor, and eliminating the need for repeated complete disassembly and assembly. In order to ensure that the locking pin part 2 will not be easily lost, the steel pipe main body 1 and the locking pin part 2 are connected by the connecting piece 6, thereby realizing the function of not being easy to lose.
Claims
1. A safety locking pin device for a front outrigger assembly of a wheeled excavator, which is arranged on the end surface of the rear side plate of the front outrigger cantilever beam, and a through hole corresponding to the position of the safety locking pin device is opened on the rear side plate of the front outrigger cantilever beam, characterized in that: The safety locking pin device comprises a steel pipe body (1), the steel pipe body (1) is provided with a limit groove, the limit groove comprises a middle groove (12), the two ends of the middle groove (12) are respectively connected to an inner groove (11) and an outer groove (13), a locking pin portion (2) is slidably and pluggedly arranged inside the steel pipe body (1), the locking pin portion (2) comprises a pin shaft (21), the end of the pin shaft (21) is connected to a circular end plate (23), the end of the circular end plate (23) is connected to a handle (24), a limit pin (22) is connected to the circumferential surface of the pin shaft (21), and the limit pin (22) is slidably engaged with the limit groove.
2. A wheeled excavator front outrigger assembly safety locking pin device according to claim 1, characterized in that: The inner groove (11) and the outer groove (13) are respectively arranged perpendicular to the middle groove (12); the inner groove (11) and the outer groove (13) are respectively arranged on both sides of the middle groove (12) and are connected through the middle groove (12).
3. A wheeled excavator front outrigger assembly safety locking pin device according to claim 2, characterized in that: The inner groove (11), the outer groove (13), and the middle groove (12) have the same width, and the arcs of the inner groove (11) and the outer groove (13) along the circumferential surface are both 92°.
4. A wheeled excavator front outrigger assembly safety locking pin device according to claim 3, characterized in that: The difference between the diameter of the limiting pin (22) and the width of the middle groove (12) is no more than 2 mm.
5. The safety locking pin device for the front outrigger assembly of a wheeled excavator according to claim 1, characterized in that: The length of the pin shaft (21) is not less than twice that of the steel pipe body (1), and the pin shaft (21) is plug-fitted into the through hole.
6. The safety locking pin device of the front outrigger assembly of a wheeled excavator according to claim 1, characterized in that: It comprises a connecting ear plate (3), wherein the connecting ear plate (3) is arranged on the circumferential surface of the steel pipe body (1).
7. A wheeled excavator front outrigger assembly safety locking pin device according to claim 6, characterized in that: The connecting ear plate (3) is provided with a light hole, a connecting bolt (4) is inserted into the inner side of the light hole, a nut (5) is threadedly connected to the outer side of the end of the connecting bolt (4), a copper nose (8) is provided between the nut (5) and the connecting ear plate (3) and on the outer side of the connecting bolt (4), a connecting piece (6) is fixedly provided on the inner side of the end of the copper nose (8), and a collar (7) is connected to the tail of the connecting piece (6).
8. The safety locking pin device of the front outrigger assembly of a wheeled excavator according to claim 7, characterized in that: The sleeve ring (7) is sleeved and arranged on the outside of the handle (24).