Excavator hydraulic quick connector with self-locking function

Abstract

The excavator hydraulic quick connector with the self-locking function comprises two symmetrically-arranged side plates, side bottom plates are welded to the bottoms of the opposite sides of the two side plates, a spring bolt shaft is fixedly installed between the two side bottom plates, a first connecting sleeve is rotationally connected to the surface of the spring bolt shaft, and a second connecting sleeve is rotationally connected to the surface of the first connecting sleeve. And spring bolt plates are fixedly connected to the two ends of one surface of the connecting sleeve correspondingly, and a spring bolt connecting shaft is arranged between the two spring bolt plates in a penetrating mode. During work, the hydraulic oil cylinder pulls the connecting rod through the second connecting sleeve, the connecting rod drives the connecting rod sliding shaft to slide by a specific stroke under the limitation of the sliding groove in the side bottom plate, and therefore the spring bolt plate is driven to stretch out of the clamping accessory, the process is irreversible due to the dead point effect of connecting rod transmission, and the connecting rod can only be pulled through the oil cylinder; thrust is applied to the spring bolt plate end, the connecting rod can drive the connecting rod sliding shaft to be clamped at the corresponding position of the sliding groove, and therefore the self-locking function is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical engineering, and particularly relates to an excavator hydraulic quick connector with a self-locking function. Background Art

[0002] Excavator quick connector, also called quick-change connector, quick connector, can quickly install and switch various configuration parts (bucket, ripper, breaker, hydraulic shear, etc.) on the excavator, which can expand the use range of the excavator, save time and improve work efficiency.

[0003] The mainstream products on the market are hydraulic or mechanical quick connectors, which have no self-locking function after the attachments are connected, and a safety pin needs to be inserted to prevent the lock from accidentally falling off. This not only increases the workload and makes the operation not smooth, but also causes certain safety hazards due to human uncertainties. Therefore, there is a need for an excavator hydraulic quick connector with a self-locking function. The self-locking function is realized by using a pure mechanical connecting rod, that is, when the hydraulic cylinder of the quick connector fails completely, the tightening mechanism still remains in a working state; it not only solves the problem that the excavator operator needs to get off the vehicle to insert the safety pin, but also ensures the reliability and safety of the locking mechanism, which can greatly improve work efficiency and fluency. Utility Model Content

[0004] The purpose of the utility model is to provide an excavator hydraulic quick connector with a self-locking function, which uses a purely mechanical connecting rod to achieve a self-locking function, that is, when the hydraulic cylinder of the quick connector fails completely, the tightening mechanism still remains in a working state; it not only solves the problem that the excavator operator needs to get off the vehicle to insert the safety pin, but also ensures the reliability and safety of the locking mechanism, and can greatly improve the working efficiency and fluency, so as to solve the above-mentioned background technical problems.

[0005] The utility model solves the above technical problems with the following technical solutions: a hydraulic quick connector for an excavator with a self-locking function, comprising two symmetrically arranged side plates, the bottoms of the two side plates on opposite sides are welded with side bottom plates, a locking tongue shaft is fixedly installed between the two side bottom plates, a connecting sleeve 1 is rotatably connected to the surface of the locking tongue shaft, both ends of the surface of the connecting sleeve 1 are fixedly connected to locking tongue plates, a locking tongue connecting shaft is provided between the two locking tongue plates, both sides of the surface of the locking tongue connecting shaft are rotatably connected to connecting rods located between the two locking tongue plates, and the two connecting rods are fixedly connected to each other. A connecting sleeve 2 is fixedly connected, and the inner cavity of the connecting sleeve 2 is rotatably connected to a connecting rod sliding shaft, both ends of the connecting rod sliding shaft pass through the outside of the connecting sleeve 2, and sliding grooves are provided on the opposite sides of the two side bottom plates, and the ends of the connecting rod sliding shaft are slidably connected to the inner cavity of the sliding groove, and a limiting sleeve is fixedly installed between the two side bottom plates, and a connecting sleeve 3 is rotatably connected to the surface of the limiting sleeve, and a hydraulic cylinder is fixedly installed on the surface of the connecting sleeve 3, and the output end of the hydraulic cylinder is fixedly installed with the connecting sleeve 2, and a fixed locking plate located below the limiting sleeve is provided at the lower left bottom between the two side bottom plates.

[0006] Preferably, the inner cavities of the two locking tongue plates and the inner cavity of the fixed locking plate are both installed with opening sleeves.

[0007] Preferably, the two ends of the lock tongue connecting shaft are flush with the side surfaces of the lock tongue plate, and the two ends of the lock tongue connecting shaft are both installed with wear-resistant sleeves, and the wear-resistant sleeves are embedded in the lock tongue plate.

[0008] Preferably, two connecting pins are provided between the two side plates, and reinforcement rings are installed at the through holes on the side plates.

[0009] Preferably, the two side panels and the right sides of the two side bottom panels are jointly fixed with a reinforcing side panel by screws.

[0010] 1. The beneficial effect of the utility model is that the hydraulic cylinder pulls the connecting rod through the connecting sleeve 2 during operation, and the connecting rod drives the connecting rod sliding shaft to slide within a specific stroke under the restriction of the slide groove on the side bottom plate, thereby driving the locking tongue plate to extend the clamping attachment. Since the connecting rod transmission has a "dead point effect", this process is irreversible, and the connecting rod can only be pulled by the cylinder. When a thrust is applied to the end of the locking tongue plate, the connecting rod will drive the connecting rod sliding shaft to be stuck in the corresponding position of the slide groove, thereby realizing the self-locking function, that is, the use of a purely mechanical connecting rod can achieve the self-locking function, that is, when the hydraulic cylinder of the quick connector fails completely, the tightening mechanism still maintains a working state; it not only solves the problem that the excavator operator needs to get off the vehicle to insert the safety pin, but also ensures the reliability and safety of the locking mechanism, which can greatly improve the work efficiency and fluency.

[0011] 2. The utility model can ensure the wear resistance of the end of the lock tongue connecting shaft by setting the wear-resistant sleeve, and improve the stability of the lock tongue connecting shaft on the two lock tongue plates.

[0012] 3. The utility model reinforces the connection between the side plate and the side bottom plate by installing the reinforced side plate on the side plate and the side bottom plate through screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] in:

[0014] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0015] Figure 2 A rear perspective schematic diagram of an embodiment of the utility model;

[0016] Figure 3 It is a southwest isometric stereoscopic schematic diagram of an embodiment of the utility model;

[0017] Figure 4 It is a southeast isometric stereoscopic schematic diagram of an embodiment of the utility model.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Side plate, 2. Side bottom plate, 3. Lock tongue shaft, 4. Connecting sleeve 1, 5. Lock tongue plate, 6. Lock tongue connecting shaft, 7. Connecting rod, 8. Connecting sleeve 2, 9. Connecting rod sliding shaft, 10. Slide groove, 11. Opening sleeve, 12. Limiting sleeve, 13. Connecting sleeve 3, 14. Hydraulic cylinder, 15. Fixed lock plate, 16. Connecting pin, 17. Reinforced side plate, 18. Wear-resistant sleeve. DETAILED DESCRIPTION

[0020] Hereinafter, an embodiment of an excavator hydraulic quick connector with a self-locking function of the present invention will be described with reference to the accompanying drawings.

[0021] Figure 1-4The utility model shows an embodiment of an excavator hydraulic quick connector with a self-locking function, which includes two symmetrically arranged side plates 1, side bottom plates 2 are welded on the bottoms of the opposite sides of the two side plates 1, a lock tongue shaft 3 is fixedly installed between the two side bottom plates 2, a connecting sleeve 1 4 is rotatably connected to the surface of the lock tongue shaft 3, and lock tongue plates 5 are fixedly connected to both ends of the surface of the connecting sleeve 4, a lock tongue connecting shaft 6 is arranged between the two lock tongue plates 5, and both sides of the surface of the lock tongue connecting shaft 6 are rotatably connected to a connecting rod 7 located between the two lock tongue plates 5, and the two ends of the lock tongue connecting shaft 6 are flush with the side surfaces of the lock tongue plates 5, and the two ends of the lock tongue connecting shaft 6 are installed with wear-resistant sleeves 18, and the wear-resistant sleeves 18 are embedded in the lock tongue plates 5. Through the arrangement of the wear-resistant sleeves 18, the wear-resistant performance of the ends of the lock tongue connecting shaft 6 can be guaranteed, and the stability of the lock tongue connecting shaft 6 on the two lock tongue plates 5 is improved, a connecting sleeve 2 8 is fixedly connected between the two connecting rods 7, and the inner cavity of the connecting sleeve 2 8 is rotatably connected to a connecting rod sliding shaft 9, and the connecting Both ends of the connecting rod sliding shaft 9 penetrate the outside of the connecting sleeve 2 8, and a slide groove 10 is opened on the opposite side of the two side bottom plates 2. The end of the connecting rod sliding shaft 9 is slidably connected to the inner cavity of the slide groove 10. A limit sleeve 12 is fixedly installed between the two side bottom plates 2. The surface of the limit sleeve 12 is rotatably connected with a connecting sleeve 3 13. The surface of the connecting sleeve 3 13 is fixedly installed with a hydraulic cylinder 14. The output end of the hydraulic cylinder 14 is fixedly installed with the connecting sleeve 2 8. A limit sleeve 12 is arranged at the lower left between the two side bottom plates 2. The fixed lock plate 15 below the position sleeve 12, the inner cavities of the two lock tongue plates 5 and the inner cavities of the fixed lock plate 15 are both installed with open sleeves 11, two connecting pins 16 are passed between the two side panels 1, and reinforcement rings are installed at the perforations on the side panels 1. The two side panels 1 and the right sides of the two side bottom panels 2 are jointly fixed with reinforced side panels 17 by screws. By setting the reinforced side panels 17, the reinforced side panels 17 are installed on the side panels 1 and the side bottom panels 2 by screws, thereby strengthening the connection between the side panels 1 and the side bottom panels 2.

[0022] Working principle: When the utility model is used, the user pulls the connecting rod 7 through the connecting sleeve 2 8 by the hydraulic cylinder 14 during operation, and the connecting rod 7 drives the connecting rod sliding shaft 9 to slide within a specific stroke under the restriction of the slide groove 10 on the side bottom plate 2, and the hydraulic cylinder 14 drives the connecting sleeve 3 13 to rotate on the surface of the limit sleeve 12, and the connecting rod 7 drives the lock tongue plate 5 to rotate around the lock tongue shaft 3 through the lock tongue connecting shaft 6, thereby driving the lock tongue plate 5 to extend the clamping attachment, and because the transmission of the connecting rod 7 has a "dead point effect", this process is irreversible, and the connecting rod 7 can only be pulled by the oil cylinder, and applying a thrust to the end of the lock tongue plate 5 drives the connecting rod sliding shaft 9 to be stuck in the corresponding position of the slide groove 10, thereby realizing the self-locking function.

[0023] To sum up: the excavator hydraulic quick connector with self-locking function, when working, the hydraulic cylinder 14 pulls the connecting rod 7 through the connecting sleeve 2 8, and the connecting rod 7 drives the connecting rod sliding shaft 9 to slide a specific stroke under the restriction of the slide groove 10 on the side bottom plate 2, thereby driving the locking tongue plate 5 to extend the clamping attachment. Because the connecting rod transmission has a "dead point effect", this process is irreversible. The connecting rod 7 can only be pulled by the cylinder. Applying a thrust connecting rod at the end of the locking tongue plate 5 will drive the connecting rod sliding shaft 9 to be stuck in the corresponding position of the slide groove 10 to achieve the self-locking function, which can achieve the use of a purely mechanical connecting rod and realize the self-locking function, that is, when the hydraulic cylinder of the quick connector fails completely, the tightening mechanism still remains in a working state; it not only solves the problem that the excavator operator needs to get off the vehicle to insert the safety pin, but also ensures the reliability and safety of the locking mechanism, which can greatly improve the work efficiency and fluency.

Claims

1. An excavator hydraulic quick connector with self-locking function, characterized in that: The invention comprises two symmetrically arranged side plates (1), the bottoms of the two side plates (1) on opposite sides are welded with side bottom plates (2), a lock tongue shaft (3) is fixedly installed between the two side bottom plates (2), the surface of the lock tongue shaft (3) is rotatably connected with a connecting sleeve (4), both ends of the surface of the connecting sleeve (4) are fixedly connected with lock tongue plates (5), a lock tongue connecting shaft (6) is arranged between the two lock tongue plates (5), both sides of the surface of the lock tongue connecting shaft (6) are rotatably connected with a connecting rod (7) located between the two lock tongue plates (5), a connecting sleeve (8) is fixedly connected between the two connecting rods (7), and the inner cavity of the connecting sleeve (8) is rotatably connected with a connecting rod sliding shaft (9), both ends of the connecting rod sliding shaft (9) pass through the outer side of the connecting sleeve (8), and the two side bottom plates (2) are provided with a slide groove (10) on the opposite side. The end of the connecting rod sliding shaft (9) is slidably connected to the inner cavity of the slide groove (10). A limit sleeve (12) is fixedly installed between the two side bottom plates (2), and the surface of the limit sleeve (12) is rotatably connected to the connecting sleeve (13). The surface of the connecting sleeve (13) is fixedly installed with a hydraulic cylinder (14), and the output end of the hydraulic cylinder (14) is fixedly installed with the connecting sleeve (8). A fixed lock plate (15) located below the limit sleeve (12) is provided at the lower left side between the two side bottom plates (2).

2. The excavator hydraulic quick connector with self-locking function according to claim 1, characterized in that: The inner cavities of the two locking tongue plates (5) and the inner cavity of the fixed locking plate (15) are both installed with opening sleeves (11).

3. The excavator hydraulic quick connector with self-locking function according to claim 2, characterized in that: The two ends of the lock tongue connecting shaft (6) are flush with the side surfaces of the lock tongue plate (5), and the two ends of the lock tongue connecting shaft (6) are both installed with wear-resistant sleeves (18), and the wear-resistant sleeves (18) are embedded in the lock tongue plate (5).

4. The excavator hydraulic quick connector with self-locking function according to claim 3, characterized in that: Two connecting pins (16) are inserted between the two side plates (1), and reinforcing rings are installed at the through holes on the side plates (1).

5. The excavator hydraulic quick connector with self-locking function according to claim 4, characterized in that: The two side panels (1) and the right sides of the two side bottom panels (2) are fixed with a reinforcing side panel (17) by means of screws.

Images