Sliding type protection structure of quick connector of excavator

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a sliding type protection structure of a quick connector of an excavator, which comprises a connecting piece, a bottom plate is arranged at the bottom of the connecting piece, a buffer protection component is arranged at the top of the connecting piece, and an energy absorption component is arranged in the connecting piece. The buffering protection assembly comprises a connecting mechanism, an elastic supporting mechanism and a counterweight balancing mechanism, and the connecting mechanism is connected to the top of the connecting piece. According to the sliding type protection structure of the quick connector of the excavator, the buffering protection assembly is arranged, the connecting column piece slides in the limiting arc frame and then extrudes the inner spring piece, the inner spring piece is used for buffering, and the connecting column piece is not pressed any more and then bounces back to achieve the buffering protection effect; the sliding type protection structure of the quick connector of the excavator can be provided with the buffer springback assembly when being pressed, a cover plate is not only adopted for protection, the elastic protection structure is not prone to being damaged after being used for many times, the protection effect is not affected, and the effect is good in the using process.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically a sliding protective structure for a quick connector for excavators. Background Technology

[0002] In construction, mining, and municipal engineering, excavators are widely used as essential construction equipment for material excavation and handling. Quick-connect couplings, as key components of excavators, greatly improve the efficiency of changing working devices (such as buckets, breakers, and grapples), enhancing the excavator's adaptability to different working conditions. However, during operation, falling rocks are common, necessitating the installation of protective structures to prevent damage.

[0003] Existing technology, Chinese patent CN218667698U, discloses a sliding protective structure for a quick connector of an excavator, belonging to the field of engineering machinery. This structure protects the quick connector, which includes a hydraulic cylinder valve block and hydraulic pipes. It comprises two side plates fixedly connected to two rotating shaft mounting plates within the quick connector, with a lower cover plate between the two side plates. One end of the lower cover plate is snapped and fixed to the same end of the two side plates, and the other end is fixed with a bent plate. The lower cover plate has an opening area. An upper cover plate is slidably mounted on the lower cover plate. The upper cover plate has a fourth through hole corresponding to the opening area for the hydraulic pipe to pass through, and a third through hole for the valve block hydraulic cylinder to pass through. After installation, the upper cover plate moves along with the hydraulic cylinder in the protective structure. This movement does not create a protective gap and does not obstruct the operation of internal parts of the quick connector, achieving multi-directional protection and preventing impurities from falling into the quick connector.

[0004] The sliding protective structure of the excavator quick connector described above features a sliding connection between the upper and lower cover plates. The lower cover plate has a limiting sliding opening, while the upper cover plate has a second through hole. A combination of bolts and nuts is used to limit the connection between the lower and upper cover plates. The structure is simple, and the detachable design facilitates future maintenance or replacement. However, this sliding protective structure for the excavator quick connector lacks a buffer rebound component when subjected to pressure, relying solely on the cover plate for protection. This can easily damage the cover plate after repeated exposure, affecting its protective effect and resulting in poor performance during use. Improvements are needed in this regard. Utility Model Content

[0005] The purpose of this invention is to provide a sliding protective structure for a quick connector for excavators, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sliding protective structure for a quick connector for excavators, including a connector, a base plate at the bottom of the connector, a buffer protection component at the top of the connector, and an energy-absorbing component inside the connector;

[0007] The buffer protection assembly includes a connecting mechanism, an elastic support mechanism, and a counterweight balancing mechanism. The connecting mechanism is connected to the top of the connector, the elastic support mechanism is connected to the bottom of the connecting mechanism, and the counterweight balancing mechanism is connected to the surface of the elastic support mechanism.

[0008] The elastic support mechanism includes a connecting L-shaped frame, a connecting plate, a limiting arc frame, an inner spring, a connecting plate body, a support rod, and a connecting rectangular block. The connecting plate is fixedly connected to the top of the connecting member, the support rod is fixedly connected to the inside of the connecting plate, the connecting plate body is fixedly connected to the back of the support rod, the limiting arc frame is fixedly connected to the left side of the back of the connecting plate body, the connecting rectangular block is fixedly connected to the right side of the front of the connecting L-shaped frame, an inner connecting plate is fixedly connected to the inside of the limiting arc frame near the bottom, the inner spring is fixedly connected to the right side of the inner connecting plate, and the top of the inner spring is connected to the bottom of the sliding column.

[0009] Preferably, the connecting mechanism includes a connecting block, an inner connecting column, a connecting frame, and a mounting base. The connecting frame is fixedly connected to the top of the mounting base, the connecting L-shaped frame is fixedly connected to the right side of the connecting frame, and the connecting block is fixedly connected to the surface of the inner connecting column.

[0010] Preferably, the counterweight balancing mechanism includes a first counterweight block, a connecting cylinder, a mounting screw, a second counterweight block, a mounting bolt, and a fixing block. The first counterweight block is connected to the top of the connecting L-shaped frame, the fixing block is fixedly connected to the front of the first counterweight block, the mounting bolt is threadedly connected to the inside of the fixing block, the mounting bolt is threadedly connected to the top of the first counterweight block, the connecting cylinder is fixedly connected to the right side of the first counterweight block, the mounting screw is threadedly connected to the inside of the connecting cylinder, and the second counterweight block is fixedly connected to the right side of the mounting screw.

[0011] Preferably, the energy-absorbing component includes a hollow frame plate, a honeycomb metal frame, a protective plate, and an elastic rubber layer. The hollow frame plate is fixedly connected to the inner back of the connector, the honeycomb metal frame is fixedly connected to the inside of the hollow frame plate, the protective plate is fixedly connected to the top of the hollow frame plate, and the elastic rubber layer is fixedly connected to the top of the protective plate.

[0012] Preferably, the fixed block has a threaded groove inside, and the top of the first counterweight block has a connecting screw hole with the same diameter as the threaded groove.

[0013] Preferably, the connecting L-shaped frame is fixedly connected to the bottom right side of the connecting block.

[0014] Preferably, a sliding column is fixedly connected inside the connecting rectangular block. The diameter of the sliding column is adapted to the width inside the limiting arc frame, and the sliding column is slidably connected inside the limiting arc frame.

[0015] Preferably, the connector has a connecting seat fixedly connected inside, and the mounting seat is fixedly connected to the top of the connecting seat. The mounting seat serves as a connection support and is located on the top of the connector to facilitate the connection.

[0016] Preferably, the lateral area of ​​the second counterweight is equal to the lateral area of ​​the first counterweight.

[0017] Preferably, a connecting cylinder is fixedly connected to the right side of the second counterweight. The inner ring of the connecting cylinder has an internal thread groove. The connecting cylinder can be extended to install more counterweight components to control the tilt angle of the connecting block and ensure the normal use of the device.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The sliding protective structure of the excavator quick connector of this utility model has a buffer protection component. The connecting column slides inside the limiting arc frame and then squeezes the inner spring component. The inner spring component provides buffering and rebounds after being no longer compressed, thus playing a buffering and protective role. This allows the sliding protective structure of the excavator quick connector to have a buffer rebound component when under pressure. It does not just use a cover plate for protection. It is an elastic protective structure that is not easily damaged after repeated use and will not affect the protective effect. It has a good effect in use.

[0020] 2. The sliding protective structure of the excavator quick connector of this utility model has an energy-absorbing component. When in use, it can protect the surface elastic rubber layer and the internal elastic rubber layer, which can absorb the impact force and disperse it to the whole structure, playing a buffer protection role inside and further increasing the protective performance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0023] Figure 3 This is a three-dimensional structural diagram of the buffer protection component of this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0025] In the diagram: 1. Connector; 2. Base plate; 3. Buffer protection assembly; 301. Connecting block; 302. Inner connecting column; 303. Connecting frame; 304. Mounting base; 305. Connecting L-shaped frame; 307. First counterweight; 308. Connecting cylinder; 309. Mounting screw; 310. Second counterweight; 311. Connecting plate; 312. Mounting bolt; 313. Fixing block; 314. Limiting arc frame; 315. Inner spring; 316. Connecting plate; 317. Support rod; 318. Connecting rectangular block; 4. Energy absorption assembly; 401. Hollow frame plate; 402. Honeycomb metal frame; 403. Protective plate; 404. Elastic rubber layer. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] Please see Figure 1-4 The present invention provides the following technical solution:

[0029] A sliding protective structure for a quick connector for an excavator includes a connector 1, a base plate 2 at the bottom of the connector 1, a buffer protection component 3 at the top of the connector 1, and an energy-absorbing component 4 inside the connector 1.

[0030] The buffer protection component 3 includes a connecting mechanism, an elastic support mechanism, and a counterweight balancing mechanism. The connecting mechanism is connected to the top of the connector 1, the elastic support mechanism is connected to the bottom of the connecting mechanism, and the counterweight balancing mechanism is connected to the surface of the elastic support mechanism.

[0031] The elastic support mechanism includes a connecting L-shaped frame 305, a connecting plate 311, a limiting arc frame 314, an inner spring 315, a connecting plate body 316, a support rod 317, and a connecting rectangular block 318. The connecting plate 311 is fixedly connected to the top of the connecting member 1. The support rod 317 is fixedly connected to the inside of the connecting plate 311. The connecting plate body 316 is fixedly connected to the back of the support rod 317. The limiting arc frame 314 is fixedly connected to the left side of the back of the connecting plate body 316. The connecting rectangular block 318 is fixedly connected to the right side of the front of the connecting L-shaped frame 305. An inner connecting plate is fixedly connected to the inside of the limiting arc frame 314 near its bottom end. The inner spring 315 is fixedly connected to the right side of the inner connecting plate. The top of the inner spring 315 is connected to the bottom of the sliding column. The fixed block 313 has a threaded groove inside. The top of the first counterweight 307 has a connecting screw hole with the same diameter as the threaded groove. The connecting L-shaped frame 305 is fixedly connected to the bottom right side of the connecting block 301. The sliding column is fixedly connected inside the connecting rectangular block 318. The diameter of the sliding column is adapted to the width inside the limiting arc frame 314. The sliding column is slidably connected inside the limiting arc frame 314. The side area of ​​the second counterweight 310 is equal to the side area of ​​the first counterweight 307.

[0032] The connecting mechanism includes a connecting block 301, an inner connecting column 302, a connecting frame 303, and a mounting base 304. The connecting frame 303 is fixedly connected to the top of the mounting base 304, and the connecting L-shaped frame 305 is fixedly connected to the right side of the connecting frame 303. The connecting block 301 is fixedly connected to the surface of the inner connecting column 302. A connecting seat is fixedly connected inside the connecting component 1, and the mounting base 304 is fixedly connected to the top of the connecting seat. The mounting base 304 serves as a connecting support and is located on the top of the connecting component 1 to facilitate the connection.

[0033] The counterweight balancing mechanism includes a first counterweight 307, a connecting cylinder 308, a mounting screw 309, a second counterweight 310, a mounting bolt 312, and a fixing block 313. The first counterweight 307 is connected to the top of the connecting L-shaped frame 305. The fixing block 313 is fixedly connected to the front of the first counterweight 307. The mounting bolt 312 is threadedly connected to the inside of the fixing block 313 and to the top of the first counterweight 307. The connecting cylinder 308 is fixedly connected to the right side of the first counterweight 307. The mounting screw 309 is threadedly connected to the inside of the connecting cylinder 308. The second counterweight 310 is fixedly connected to the right side of the mounting screw 309. A connecting cylinder is fixedly connected to the right side of the second counterweight 310. The inner ring of the connecting cylinder has an internal thread groove. The connecting cylinder can be extended to install more counterweight components to control the tilt angle of the connecting block 301 and ensure the normal use of the device.

[0034] The energy-absorbing component 4 includes a hollow frame plate 401, a honeycomb metal frame 402, a protective plate 403, and an elastic rubber layer 404. The hollow frame plate 401 is fixedly connected to the inner back of the connector 1, the honeycomb metal frame 402 is fixedly connected to the inside of the hollow frame plate 401, the protective plate 403 is fixedly connected to the top of the hollow frame plate 401, and the elastic rubber layer 404 is fixedly connected to the top of the protective plate 403.

[0035] In use, the connecting frame 303, connecting block 301, and mounting base 304 connect the excavator body and bucket. A connecting L-shaped frame 305 is located at the bottom of the connecting block 301, and a connecting rectangular block 318 is located on the surface of the connecting L-shaped frame 305. A limiting arc frame 314, supported by connecting plate 311, connecting plate 316, and support rod 317, limits the sliding column inside the connecting rectangular block 318. During bucket operation, pressure is applied to the connection point, causing the connecting column to slide within the limiting arc frame 314, compressing the inner spring 315 for cushioning. The spring rebounds after the pressure is released, providing buffering protection. A counterweight balancing mechanism is located at the top of the connecting L-shaped frame 305. During use, the first counterweight block 307 can be fitted onto the top of the connecting L-shaped frame 305, ensuring that the threaded groove inside the fixing block 313 is properly aligned. Align the threaded connection hole at the top of the connecting L-shaped frame 305, and then screw the mounting bolt 312 into the interior of the fixing block 313. A connecting cylinder 308 is provided on the right side of the first counterweight block 307. The mounting screw 309 can be screwed into the interior of the connecting cylinder 308 to extend the installation of the second counterweight block 310. This can change the tilt of the connecting L-shaped frame 305 and protect the device. The sliding protective structure of the excavator quick connector can be equipped with a buffer rebound component when under pressure. It is not just a single cover plate protection. The elastic protection structure is not easily damaged after repeated use and the protective effect is not affected. It has a good effect in use. Energy absorption components 4 are provided close to each other on one side inside the connector 1. When in use, the elastic rubber layer 404 on the surface of the protective plate 403 and the embedded elastic rubber layer 404 can absorb the impact force and disperse it to the entire structure, playing a buffer protection role inside and further increasing the protective performance.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A skid protection structure for a quick coupler of an excavator comprising a connecting piece (1), characterized in that: The bottom of the connecting piece (1) is provided with a bottom plate (2), the top of the connecting piece (1) is provided with a buffer protection assembly (3), and the inside of the connecting piece (1) is provided with an energy absorption assembly (4); The buffer protection assembly (3) comprises a connecting mechanism, an elastic support mechanism and a counterweight balancing mechanism, the connecting mechanism is connected to the top of the connecting piece (1), the elastic support mechanism is connected to the bottom of the connecting mechanism, and the counterweight balancing mechanism is connected to the surface of the elastic support mechanism; The elastic support mechanism comprises a connecting L-shaped frame (305), a connecting plate (311), a limiting arc frame (314), an inner spring (315), a connecting plate body (316), a support rod (317) and a connecting square block (318), the connecting plate (311) is fixedly connected to the top of the connecting piece (1), the support rod (317) is fixedly connected to the inside of the connecting plate (311), the connecting plate body (316) is fixedly connected to the back surface of the support rod (317), the limiting arc frame (314) is fixedly connected to the left side of the back surface of the connecting plate body (316), the connecting square block (318) is fixedly connected to the right side of the front surface of the connecting L-shaped frame (305), an inner connecting plate is fixedly connected to the inside of the limiting arc frame (314) and close to the bottom end, the inner spring (315) is fixedly connected to the right side of the inner connecting plate, and the top of the inner spring (315) is connected to the bottom of the sliding column.

2. A skid shield for a quick coupler of an excavator according to claim 1, characterized in that: The connecting mechanism comprises a connecting block (301), an inner connecting column (302), a connecting frame (303) and a mounting seat (304), the connecting frame (303) is fixedly connected to the top of the mounting seat (304), and the connecting L-shaped frame (305) is fixedly connected to the right side of the connecting frame (303).

3. The skid shield for a quick coupler of an excavator according to claim 1, wherein: The counterweight balancing mechanism comprises a first counterweight block (307), a connecting barrel (308), a mounting screw rod (309), a second counterweight block (310), a mounting bolt (312) and a fixed block (313), the first counterweight block (307) is connected to the top of the connecting L-shaped frame (305), the fixed block (313) is fixedly connected to the front surface of the first counterweight block (307), the mounting bolt (312) is screwedly connected to the inside of the fixed block (313), the mounting bolt (312) is screwedly connected to the top of the first counterweight block (307), the connecting barrel (308) is fixedly connected to the right side of the first counterweight block (307), and the mounting screw rod (309) is screwedly connected to the inside of the connecting barrel (308).

4. The skid shield for a quick coupler of an excavator according to claim 1, wherein: The energy absorption assembly (4) comprises a hollow frame plate (401), a honeycomb metal frame (402), a protective plate (403) and an elastic rubber layer (404), the hollow frame plate (401) is fixedly connected to the inner back of the connecting piece (1), the honeycomb metal frame (402) is fixedly connected to the inside of the hollow frame plate (401), the protective plate (403) is fixedly connected to the top of the hollow frame plate (401), and the elastic rubber layer (404) is fixedly connected to the top of the protective plate (403).

5. A skid shield for a quick coupler of an excavator according to claim 3, wherein: The inside of the fixed block (313) is provided with a threaded groove, and the top of the first counterweight block (307) is provided with a connecting screw hole with the same aperture as the threaded groove.

6. A skid shield for a quick coupler of an excavator according to claim 1, characterized in that: The connecting L-shaped frame (305) is fixedly connected to the bottom right side of the connecting block (301).

7. The skid shield for a quick coupler of an excavator according to claim 1, wherein: The inside of the connecting block (318) is fixedly connected with a sliding column piece, the diameter of the sliding column piece is matched with the width of the inside of the limiting arc frame (314), and the sliding column piece is slidingly connected to the inside of the limiting arc frame (314).

8. The skid shield for a quick coupler of an excavator according to claim 2, wherein: The inside of the connecting piece (1) is fixedly connected with a connecting seat, and the mounting seat (304) is fixedly connected to the top of the connecting seat.

9. A skid shield for a quick coupler of an excavator according to claim 3, wherein: The side area of the second counterweight block (310) is equal to that of the first counterweight block (307).

10. The skid shield for a quick coupler of an excavator according to claim 3, wherein: The right side of the second counterweight block (310) is fixedly connected with a connecting barrel body, and the inner ring of the connecting barrel body is provided with an internal thread groove.

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