Three-lock-belt indication connector

Abstract

The utility model relates to a three-lock belt indication connector, and belongs to the technical field of engineering machinery. Comprising an upper frame and a lower frame, a movable hook is arranged on the left side of the lower frame, a jaw is formed in the right side of the lower frame, an oil cylinder is arranged in the lower frame, oval holes are formed in the front side and the rear side of the lower frame, a second oil cylinder shaft is arranged in the oval holes and connected with an oil cylinder barrel, a fixed limiting block is arranged on the right side below the cylinder barrel, and a lock valve is arranged above the cylinder barrel. Triple protection measures are taken, it can be guaranteed that accessories connected with the excavator cannot fall off, the safety coefficient is higher, and reliability is higher; by arranging the indicating mechanism, the connector has an indicating function, so that an operator can observe the connector conveniently, the working efficiency is higher, and the connector is more humanized; when the connector is provided with a swing mechanism, the connector can rotate and swing by + / -90 degrees, and the application range is wider; whether a swing mechanism is arranged or not can be freely selected, the swing mechanism can be directly removed when not needed, the production cost and the connector size are reduced, and adaptability is high.

Description

Technical Field

[0001] The utility model relates to a three-lock connector with indication, belonging to the technical field of engineering machinery. Background Art

[0002] In the field of engineering machinery, grabs, breakers, and lifting accessories are often installed on excavators according to production needs. Excavator quick connectors, also known as quick-change connectors, can quickly install and switch various accessories on excavators, which can not only expand the use of excavators, but also save time and improve efficiency. However, most existing quick connectors have a fixed center distance and can only match accessories with a specific center distance. The scope of application is low, and the single insurance design is also prone to accessory falling accidents, causing safety hazards. In addition, the existing quick connectors do not have an indication function, and the connection status between the excavator and the connector is not intuitive, which is not friendly to the operator. Therefore, it is necessary to develop a three-lock indicator connector to solve the above problems. Utility Model Content

[0003] The utility model aims at the deficiencies in the prior art and provides a three-lock connector with indication.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A three-lock connector with indication comprises an upper frame and a lower frame, wherein the lower frame is provided with a movable hook on the left side and a tiger's mouth on the right side, an oil cylinder is provided inside the lower frame and elliptical holes are provided on the front and rear sides, an oil cylinder shaft 2 is provided in the elliptical hole, the oil cylinder shaft 2 is connected to the oil cylinder barrel, a fixed limit block is provided on the right side below the cylinder barrel and a lock valve is provided on the top, an indication mechanism is provided on the right side of the lock valve, an oil cylinder shaft 1 connected to the movable hook is provided on the oil cylinder, a spring is provided on the outer periphery of the cylinder barrel, and an axis baffle is provided at the tail of the tiger's mouth.

[0006] Furthermore, the height of the shaft baffle is higher than the lowest point where the shaft of the accessory to be connected contacts the outer side of the jaws.

[0007] Furthermore, in the initial state, the height of the gap formed between the shaft baffle and the lower end of the lower frame is greater than the shaft diameter of the accessory to be connected.

[0008] Furthermore, a spring baffle is provided in the middle of the cylinder.

[0009] Furthermore, one end of the spring is connected to the spring baffle, and the other end is connected to the cylinder shaft.

[0010] Furthermore, the spring baffle is an open annular structure.

[0011] Furthermore, the limit block is located below the second cylinder axis.

[0012] Furthermore, the indicating mechanism is detachably connected.

[0013] Furthermore, initially, the oil cylinder limit block is located inside the jaws and does not play a limiting role on the attachment shaft to be connected.

[0014] Furthermore, a swing mechanism is provided between the upper frame and the lower frame.

[0015] Compared with the prior art, the beneficial effects of the utility model are: it has triple protection measures to ensure that the accessories connected to the excavator will not fall, with a higher safety factor and stronger reliability; by setting an indication mechanism, the connector has an indication function, which is convenient for the operator to observe, with higher work efficiency and more humane; when equipped with a swing mechanism, the connector can rotate and swing ±90°, and is applicable to a wider range of occasions; it is free to choose whether to have a swing mechanism, and it can be directly removed when it is not needed, which reduces the production cost and the size of the connector, and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 for Figure 1 sectional view of .

[0018] Figure 3 It is a structural schematic diagram of the swing mechanism part of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the oil cylinder part of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the lower shelf part of the utility model.

[0021] Figure 6 It is a cross-sectional view of the utility model when working.

[0022] Figure 7 This is the front view of the utility model without the swing mechanism.

[0023] In the figure, 1. upper shaft; 2. upper frame; 3. swing mechanism; 31. swing body; 32. upper support leg; 33. lower support leg; 4. lower frame; 41. elliptical hole; 42. shaft baffle; 43. tiger's mouth; 5. oil cylinder; 51. cylinder barrel; 53. limit block; 54. lock valve; 55. spring baffle; 6. movable hook; 7. spring; 8. indicating mechanism; 9. oil cylinder shaft one; 10. oil cylinder shaft two. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figure 1-Figure 7 As shown, a three-lock connector with indication includes an upper frame 2 and a lower frame 4, wherein the lower frame 4 is provided with a movable hook 6 on the left side and a jaws 43 on the right side, an oil cylinder 5 is provided inside the lower frame 4, and an elliptical hole 41 is provided on the front and rear sides, an oil cylinder shaft 2 10 is provided in the elliptical hole 41, and the oil cylinder shaft 2 10 is connected to the cylinder barrel 51 of the oil cylinder 5, a fixed limit block 53 is provided on the right side below the cylinder barrel 51, a lock valve 54 is provided on the top, an indication mechanism 8 is provided on the right side of the lock valve 54, an oil cylinder shaft 1 9 connected with the movable hook 6 is provided on the oil cylinder 5, a spring 7 is provided on the outer periphery of the cylinder barrel 51, and an axis baffle 42 is provided at the tail of the jaws 43.

[0026] The height of the shaft baffle 42 is higher than the lowest point where the shaft of the attachment to be connected contacts the outer side of the jaws 43 .

[0027] In the initial state, the height of the gap formed between the shaft baffle 42 and the lower end of the lower frame 4 is greater than the shaft diameter of the accessory to be connected.

[0028] A spring baffle 55 is disposed in the middle of the cylinder 51 .

[0029] One end of the spring 7 is connected to the spring baffle 55, and the other end is connected to the cylinder shaft 9.

[0030] The spring baffle 55 is an open annular structure.

[0031] The limit block 53 is located below the cylinder shaft 10 .

[0032] The indicating mechanism 8 is detachably connected and can be assembled on the limiting block 53 of the oil cylinder 5 by means of threads.

[0033] Initially, the limit block of the oil cylinder 5 is located inside the jaws 43 and does not play a limiting role on the shaft of the attachment to be connected.

[0034] A swing mechanism 3 is provided between the upper frame 2 and the lower frame 4 .

[0035] Example 1

[0036] When a swing mechanism 3 is provided between the upper frame 2 and the lower frame 4, the upper leg 32 is welded to the swing body 31 and welded to the upper frame 2, and the lower leg 32 is welded to the lower frame 4 and is in an assembled relationship with the swing body 31, and can rotate around the central axis of the swing body 31 by ±90°.

[0037] When working, the swing mechanism 3 can rotate around the central axis of the swing body 31 by ±90°; the hydraulic oil enters the rodless chamber through the lock valve 54, and the cylinder rod of the oil cylinder 5 extends. The lock valve 54 has a self-locking function. When the oil is not flowing, the hydraulic oil in the rodless chamber cannot enter the oil inlet pipe through the lock valve 54. The lock valve 54 prevents backflow (the first lock). The indicating mechanism 8 can move with the oil cylinder 5 (the indicating mechanism 8 is initially inside the lower frame 4). The indicating mechanism 8 extends out of the lower frame to play an indicating role. When the cylinder rod is fully extended, the spring is still in a compressed state (the second lock). Initially, the limit block 53 of the oil cylinder 5 is located on the inner side of the tiger's mouth 43, and has no limiting effect on the shaft of the connected accessory. When in working state, the limit block 53 of the oil cylinder 5 extends out of the tiger's mouth 43 and is located on the outer side of the tiger's mouth 43, and has a limiting effect on the shaft of the connected accessory (the third lock).

[0038] Example 2

[0039] When there is no swing mechanism 3 between the upper frame 2 and the lower frame 4, the swing body 31 cannot rotate and swing at ±90° around the central axis, and other functions are not affected, and the working process is the same as above.

[0040] It has triple protection measures to ensure that the accessories connected to the excavator will not fall, with a higher safety factor and stronger reliability; by setting the indicating mechanism 8, the connector has an indicating function, which is convenient for the operator to observe, with higher work efficiency and more humane; when equipped with a swing mechanism 3, the connector can rotate and swing by ±90°, and is applicable to a wider range of occasions; it is free to choose whether to have a swing mechanism 3, and it can be directly removed when it is not needed, which reduces the production cost and the size of the connector and has strong adaptability.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-lock connector with an indicator, comprising an upper frame (2) and a lower frame (4), wherein the lower frame (4) is provided with a movable hook (6) on the left side and a tiger's mouth (43) on the right side, characterized in that: The lower frame (4) is provided with an oil cylinder (5) inside and an elliptical hole (41) on both sides. An oil cylinder shaft 2 (10) is provided in the elliptical hole (41). The oil cylinder shaft 2 (10) is connected to the cylinder barrel (51) of the oil cylinder (5). A fixed limit block (53) is provided on the right side below the cylinder barrel (51), and a lock valve (54) is provided on the top. An indicating mechanism (8) is provided on the right side of the lock valve (54). An oil cylinder shaft 1 (9) connected to the movable hook (6) is provided on the oil cylinder (5). A spring (7) is provided on the outer periphery of the cylinder barrel (51), and an axis baffle (42) is provided at the tail of the jaws (43).

2. The triple lock connector with indicator according to claim 1, characterized in that: The height of the shaft baffle (42) is higher than the lowest point where the shaft of the attachment to be connected contacts the outer side of the jaws (43).

3. The triple lock connector with indicator according to claim 1, characterized in that: In the initial state, the height of the gap formed between the shaft baffle (42) and the lower end of the lower frame (4) is greater than the shaft diameter of the accessory to be connected.

4. The triple lock connector with indicator according to claim 1, characterized in that: A spring baffle (55) is provided in the middle of the cylinder (51).

5. The triple lock connector with indicator according to claim 4, characterized in that: One end of the spring (7) is connected to the spring baffle (55), and the other end is connected to the oil cylinder shaft (9).

6. The triple lock connector with indicator according to claim 4, characterized in that: The spring baffle (55) is an open annular structure.

7. The triple lock connector with indicator according to claim 1, characterized in that: The limit block (53) is located below the second oil cylinder shaft (10).

8. The triple lock connector with indicator according to claim 1, characterized in that: The indicating mechanism (8) is detachably connected.

9. The triple lock connector with indicator according to claim 1, characterized in that: Initially, the limit block of the oil cylinder (5) is located inside the jaws (43) and has no limit effect on the attachment shaft to be connected.

10. The triple lock connector with indicator according to claim 1, characterized in that: A swing mechanism (3) is provided between the upper frame (2) and the lower frame (4).

Images