CN215669829U

CN215669829U - Rotary locking device of engineering machinery and engineering machinery with same

Info

Publication number: CN215669829U
Application number: CN202121462031.0U
Authority: CN
Inventors: 马雪健; 于世嘉; 韩露
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-28
Anticipated expiration: 2031-06-29

Abstract

The utility model provides a rotary locking device of engineering machinery and the engineering machinery with the rotary locking device, wherein the rotary locking device of the engineering machinery comprises a limiting plate and a limiting rod. The limiting plate is suitable for being arranged on a rotary structure of the engineering machinery, a first limiting groove and a second limiting groove which extend in the vertical direction are arranged on the limiting plate, the upper ends of the first limiting groove and the second limiting groove are communicated, and the lower ends of the first limiting groove and the second limiting groove are staggered in the vertical direction. The limiting rod is arranged on the outer side of the limiting plate, the upper end of the limiting rod is bent to form a sliding portion, the sliding portion is matched with the first limiting groove and the second limiting groove, and when the sliding portion is located at the lower end of the first limiting groove or the lower end of the second limiting groove respectively, the lower end of the limiting rod is suitable for being separated from or connected with another rotary structure of the engineering machinery. The technical scheme of the utility model overcomes the defect that the rotation locking device of the mini excavator in the prior art does not have the anti-falling function.

Description

Rotary locking device of engineering machinery and engineering machinery with same

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a rotary locking device of the engineering machinery and the engineering machinery with the rotary locking device.

Background

A swing lock device of an excavator is an important component for restricting the swing of the excavator, and a swing lock function is generally provided to a swing motor. However, in the case of a mini excavator, the swing motor does not have a swing lock function for reasons of volume and cost. Therefore, after the machine cancels the rotation operation, the upper vehicle body of the mini excavator can rotate automatically under the action of external force or self weight, and the upper vehicle body and the lower vehicle body rotate, so that safety accidents are easily caused.

Some excavators in the prior art are provided with a swing lock structure between an upper vehicle body and a lower vehicle body, but the swing lock structure has the following disadvantages:

1. locking frame and locking round pin are open structure, do not possess the anticreep function, and the excavator can cause the locking round pin to deviate from in the locking frame because automobile body vibrations in work or transportation, makes gyration locking function inefficacy.

2. Because the excavator during operation automobile body rocks great, is big clearance fit between locking frame and the locking round pin, and the two is inside the driver's cabin, consequently causes the interior noise of driver's cabin great, influences the travelling comfort of driving.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to provide a swing lock device for a construction machine and a construction machine having the same, which overcome the disadvantage that a swing lock device for a mini excavator in the related art does not have an anti-slip function.

In order to solve the above problems, the present invention provides a rotation locking device for an engineering machine, including a limiting plate and a limiting rod. The limiting plate is suitable for being arranged on a rotary structure of the engineering machinery, a first limiting groove and a second limiting groove which extend in the vertical direction are arranged on the limiting plate, the upper ends of the first limiting groove and the second limiting groove are communicated, and the lower ends of the first limiting groove and the second limiting groove are staggered in the vertical direction. The limiting rod is arranged on the outer side of the limiting plate, the upper end of the limiting rod is bent to form a sliding portion, the sliding portion is matched with the first limiting groove and the second limiting groove, and when the sliding portion is located at the lower end of the first limiting groove or the lower end of the second limiting groove respectively, the lower end of the limiting rod is suitable for being separated from or connected with another rotary structure of the engineering machinery.

Optionally, a communicating groove is further formed in the limiting plate, one end of the communicating groove is connected with the upper end of the first limiting groove, and the other end of the communicating groove is connected with the upper end of the second limiting groove.

Optionally, the communicating groove extends along the horizontal direction, and the first limiting groove and the second limiting groove are both perpendicular to the communicating groove.

Optionally, still be provided with the mounting groove on the limiting plate, the lower extreme and the middle part in intercommunication groove of mounting groove are connected, and the upper end of mounting groove link up the side portion that goes up of limiting plate.

Optionally, the stop lever is rotatably arranged along its axis.

Optionally, the end of the sliding part is provided with a limiting head, and the size of the limiting head is larger than the width of the first limiting groove and the second limiting groove.

Optionally, the outer surface of the sliding portion is provided with a damping layer.

Optionally, the damping layer is in interference fit with the first limiting groove and the second limiting groove.

The utility model also provides engineering machinery comprising the rotary locking device.

Optionally, the engineering machinery is an excavator, the excavator comprises an upper platform and a lower platform, the limiting plate is arranged on the upper platform, the lower platform is provided with a locking hole, and the lower end of the limiting rod is matched with the locking hole.

The utility model has the following advantages:

1. by utilizing the technical scheme of the utility model, when the engineering machinery needs to rotate, the sliding part of the limiting rod is positioned in the first limiting groove of the limiting plate, and the lower end of the limiting rod is separated from the other rotating structure, so that the two rotating structures can rotate freely. When the rotation of the engineering machinery is limited, the sliding part of the limiting rod is located in the second limiting groove of the limiting plate, and the lower end of the limiting rod is connected with the other rotating structure, so that the rotation between the two rotating structures is limited, and the rotating limiting effect is achieved. Meanwhile, the limiting plate can prevent the sliding part from being separated from the limiting plate compared with the open type locking frame, and therefore the anti-falling effect is achieved. Therefore, the technical scheme of the utility model overcomes the defect that the rotation locking device of the mini excavator in the prior art does not have the anti-falling function.

2. The arrangement of the communicating groove facilitates the switching of the sliding part between the first limiting groove and the second limiting groove.

3. First spacing groove, second spacing groove, intercommunication groove and mounting groove form semi-enclosed labyrinth structure for the sliding part is difficult to deviate from the limiting plate.

4. The vibration damping layer outside the sliding part can absorb vibration generated during operation or working of the engineering machinery, so that working noise is reduced.

5. Damping layer and first spacing groove and second spacing groove interference fit further make the sliding part be difficult to deviate from the limiting plate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 shows a schematic structural view of a swing lock device according to the utility model;

fig. 2 shows a schematic structural diagram of a limiting plate of the slewing lock device in fig. 1;

fig. 3 shows a schematic structural view of a limiting rod of the swing lock device in fig. 1.

Description of reference numerals:

10. a limiting plate; 11. a first limit groove; 12. a second limit groove; 13. a communicating groove; 14. mounting grooves; 20. a limiting rod; 21. a sliding part; 211. a limiting head.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 3, the swing lock device of the construction machine according to the present embodiment includes a stopper plate 10 and a stopper rod 20. The limiting plate 10 is suitable for being arranged on a rotary structure of the engineering machinery, and a first limiting groove 11 and a second limiting groove 12 which extend in the vertical direction are arranged on the limiting plate 10. The upper ends of the first limiting groove 11 and the second limiting groove 12 are communicated, and the lower ends of the first limiting groove 11 and the second limiting groove 12 are staggered in the vertical direction. The limiting rod 20 is arranged outside the limiting plate 10, the upper end of the limiting rod 20 is bent to form a sliding part 21, and the sliding part 21 is matched with the first limiting groove 11 and the second limiting groove 12. When the sliding portion 21 is located at the lower end of the first limiting groove 11 or the lower end of the second limiting groove 12, respectively, the lower end of the limiting rod 20 is adapted to be separated from or connected to another revolving structure of the construction machine.

By using the technical scheme of the embodiment, when the engineering machinery needs to rotate, the sliding part 21 of the limiting rod 20 is located in the first limiting groove 11 of the limiting plate 10, and at the moment, the lower end of the limiting rod 20 is separated from another rotating structure, so that the two rotating structures can rotate freely. When the rotation of the engineering machinery needs to be limited, the sliding part 21 of the limiting rod 20 is located in the second limiting groove 12 of the limiting plate 10, and at the moment, the lower end of the limiting rod 20 is connected with another rotating structure, so that the rotation between the two rotating structures is limited, and the rotation limiting effect is achieved. Therefore, the technical scheme of the embodiment overcomes the defect that the mini excavator in the prior art does not have a rotation locking function.

It should be noted that, as can be seen from fig. 2, the first limiting groove 11 and the second limiting groove 12 are both groove structures extending in the vertical direction. The upper ends of the first limiting groove 11 and the second limiting groove 12 are flush, and the lower end of the first limiting groove 11 is higher than the lower end of the second limiting groove 12 (i.e. the length of the first limiting groove 11 is smaller than the length of the second limiting groove 12), so that the lower end of the first limiting groove 11 and the lower end of the second limiting groove 12 are arranged in a staggered manner in the vertical direction. As will be understood by those skilled in the art with reference to fig. 1, when the sliding portion 21 is located at the lower end of the first limiting groove 11, the overall height of the limiting rod 20 is higher than the height of the limiting rod 20 when the sliding portion 21 is located at the lower end of the second limiting groove 12, so that the sliding portion 21 is switched between the first limiting groove 11 and the second limiting groove 12, and the height adjustment of the limiting rod 20 can be realized, so that the lower end of the limiting rod 20 is separated from or connected to the bottom rotary platform.

It should be noted that, as can be seen from fig. 2, the upper ends of the first limiting groove 11 and the second limiting groove 12 are communicated, so as to facilitate the switching of the sliding portion 21 between the first limiting groove 11 and the second limiting groove 12.

It should be noted that, as can be seen from fig. 3, the upper end of the limiting rod 20 is bent toward the horizontal direction, so that the limiting rod 20 forms an "L" shaped structure. The horizontally bent portion of the stopper rod 20 forms a slide portion 21. The sliding part 21 can slide in the first limiting groove 11 and the second limiting groove 12, and the sliding part 21 can drive the limiting rod 20 to move upwards or downwards integrally in the sliding process.

As shown in fig. 2, in the solution of the present embodiment, the stopper plate 10 is further provided with a communication groove 13, one end of the communication groove 13 is connected to the upper end of the first stopper groove 11, and the other end of the communication groove 13 is connected to the upper end of the second stopper groove 12. Specifically, the communication groove 13 is used to switch the slide portion 21 between the first stopper groove 11 and the second stopper groove 12. When the sliding portion 21 needs to be switched from the first limiting groove 11 to the second limiting groove 12, the sliding portion 21 is moved to the upper end of the first limiting groove 11, then the sliding portion 21 is moved from the upper end of the first limiting groove 11 to the upper end of the second limiting groove 12 through the communicating groove 13, and then the sliding portion 21 is moved from the upper end of the second limiting groove 12 to the lower end. When the sliding portion 21 needs to be switched from the second limiting groove 12 to the first limiting groove 11, the above steps are reversed.

As shown in fig. 2, in the solution of the present embodiment, the communication groove 13 extends in the horizontal direction, and both the first stopper groove 11 and the second stopper groove 12 are provided perpendicular to the communication groove 13. Specifically, the above configuration enables the sliding portion 21 to be smoothly switched among the first stopper groove 11, the second stopper groove 12, and the communication groove 13.

As shown in fig. 2, in the solution of the present embodiment, a mounting groove 14 is further provided on the limit plate 10, a lower end of the mounting groove 14 is connected to a middle portion of the communication groove 13, and an upper end of the mounting groove 14 penetrates through an upper side portion of the limit plate 10. Specifically, the mounting groove 14 is used for mounting the slide portion 21. When the stopper rod 20 needs to be mounted on the stopper plate 10, the sliding portion 21 is inserted into the mounting groove 14 through the through hole above the stopper plate 10, then the sliding portion 21 is moved into the communicating groove 13 through the mounting groove, and finally the sliding portion 21 is moved into the first stopper groove 11 or the second stopper groove 12.

It is worth mentioning that the lower end of the mounting groove 14 is connected with the middle of the communication groove 13. As can be seen from fig. 2, the above structure allows the upper ends of the first and

second stopper grooves

11 and 12 to have stop surfaces (i.e., part of the wall surfaces of the communication groove 13). Therefore, even if the construction machine vibrates during movement, the sliding portion 21 does not come out of the first stopper groove 11 or the second stopper groove 12, thereby ensuring stability of the swing lock function.

Further, the first stopper groove 11, the second stopper groove 12, the communication groove 13, and the mounting groove 14 form a labyrinth structure, so that the sliding portion 21 cannot be removed from the stopper plate 10.

As shown in fig. 1, in the solution of the present embodiment, the limiting rod 20 is rotatably disposed along the axis thereof. Specifically, the limiting rod 20 is mounted on a plate-shaped structure, the plate-shaped structure is provided with a limiting hole, and the limiting rod 20 is arranged in the limiting hole in a penetrating manner so as to rotate along the axis of the limiting rod. As will be understood by those skilled in the art with reference to fig. 2 and 3, when the limiting rod 20 rotates, the sliding portion 21 is driven to swing in the horizontal direction, so that the sliding portion 21 can slide in the communication groove 13, and the sliding portion 21 can be switched between the first limiting groove 11 and the second limiting groove 12.

As shown in fig. 3, in the solution of the present embodiment, a limiting head 211 is provided at an end of the sliding part 21, and the size of the limiting head 211 is larger than the width of the first limiting groove 11 and the second limiting groove 12. Specifically, the stopper head 211 prevents the sliding portion 21 from coming out of the first stopper groove 11 or the second stopper groove 12 in the horizontal direction, thereby ensuring the stability of the swing lock function.

Preferably, the outer surface of the sliding portion 21 is provided with a vibration damping layer. When the construction machine is traveling or working, the generated vibration may cause the sliding portion 21 to collide with the first stopper groove 11 or the second stopper groove 12 and cause noise. The damping layer can absorb the collision and reduce the working noise generated when the engineering machinery runs or works. It is further preferable that the damping layer is formed by a plastic injection process, but the damping layer may be formed by wrapping the sliding portion 21 with other damping materials.

Preferably, the damping layer is in interference fit with the first and second limiting

grooves

11 and 12. The arrangement mode can ensure that the sliding part 21 is stably kept at the bottom of the first limiting groove 11 or the second limiting groove 12, thereby ensuring the stability of the rotation locking function.

The embodiment also provides engineering machinery which comprises the rotary locking device. Preferably, the engineering machinery is an excavator, the excavator comprises an upper platform and a lower platform, the limiting plate 10 is arranged on the upper platform, the lower platform is provided with a locking hole, and the lower end of the limiting rod 20 is matched with the locking hole. Further, when the sliding portion 21 is located in the first limiting groove 11, the lower end of the limiting rod 20 is separated from the locking hole, and the upper platform and the lower platform can relatively rotate. When the sliding part 21 is in the second limit groove 12, the lower end of the limit rod 20 is inserted into the locking hole, and the rotation of the upper platform and the lower platform is locked.

The excavator is preferably a mini excavator, but any other construction machine having a swing structure may be subjected to swing restriction using the swing lock device.

According to the above description, the technical solution of the present patent application has the following advantages:

1. the first limiting groove, the second limiting groove, the communicating groove and the mounting groove form a semi-closed labyrinth structure, so that the limiting rod is not easy to be separated from the limiting plate under the conditions of gravity, vibration and bump, and the safety of rotary locking is improved;

2. the surface of the sliding part of the limiting rod is treated by adopting a plastic spraying process, so that the sliding part has the functions of shock absorption and noise reduction, and after the sliding part is clamped into the first limiting groove or the second limiting groove, the sliding part can be firmly clamped in the limiting plate through the deformation of surface plastic spraying, and is not easy to deviate from the limiting plate.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A swing lock device for a construction machine, comprising:

the limiting plate (10), the limiting plate (10) is suitable for being arranged on a rotary structure of the engineering machinery, a first limiting groove (11) and a second limiting groove (12) which extend along the vertical direction are arranged on the limiting plate (10), the upper ends of the first limiting groove (11) and the second limiting groove (12) are communicated, and the lower ends of the first limiting groove (11) and the second limiting groove (12) are staggered along the vertical direction;

gag lever post (20), the setting is in the outside of limiting plate (10), the upper end bending type of gag lever post (20) forms sliding part (21), sliding part (21) with first spacing groove (11) with second spacing groove (12) cooperation, sliding part (21) are located respectively during the lower extreme of first spacing groove (11) or the lower extreme of second spacing groove (12), the lower extreme of gag lever post (20) is suitable for and is connected with another revolution structure phase separation of engineering machine tool.

2. The rotary locking device according to claim 1, wherein a communication groove (13) is further disposed on the limiting plate (10), one end of the communication groove (13) is connected to the upper end of the first limiting groove (11), and the other end of the communication groove (13) is connected to the upper end of the second limiting groove (12).

3. The rotary locking mechanism according to claim 2, characterized in that the communication groove (13) extends in a horizontal direction, and the first limiting groove (11) and the second limiting groove (12) are arranged perpendicular to the communication groove (13).

4. The rotary locking device according to claim 2, characterized in that the limiting plate (10) is further provided with a mounting groove (14), the lower end of the mounting groove (14) is connected with the middle of the communication groove (13), and the upper end of the mounting groove (14) penetrates through the upper side of the limiting plate (10).

5. Swivel lock arrangement according to any of claims 1 to 4, characterized in that the arresting rod (20) is rotatably arranged along its axis.

6. The rotary locking mechanism according to any one of claims 1 to 4, characterized in that the end of the sliding part (21) is provided with a limiting head (211), the size of the limiting head (211) being larger than the width of the first limiting groove (11) and the second limiting groove (12).

7. The swing lock device according to any one of claims 1 to 4, wherein an outer surface of the sliding portion (21) is provided with a vibration damping layer.

8. The rotary locking mechanism of claim 7 wherein the damping layer is in interference fit with the first and second retaining grooves (11, 12).

9. A working machine, characterized in that it comprises a swing lock as claimed in any one of claims 1 to 8.

10. The construction machine according to claim 9, wherein the construction machine is an excavator, the excavator comprises an upper platform and a lower platform, the limiting plate (10) is arranged on the upper platform, the lower platform is provided with a locking hole, and the lower end of the limiting rod (20) is matched with the locking hole.