Quick connecting mechanism for oil way of conversion accessory

Abstract

The utility model discloses a quick connecting mechanism for an oil way of a conversion accessory, which belongs to the technical field of excavator accessories, and comprises a converter, the interior of the converter is hollow, a pin shaft is arranged in the bottom of the converter in a penetrating manner, the converter is rotatably connected with a connecting frame through the pin shaft, and a hydraulic rod is arranged in the converter. Connecting rods are arranged on the two sides of the end of the hydraulic rod, sliding rods are installed through the connecting rods, push pin fixing seats corresponding to the two sliding rods are arranged on the connecting frame, the push pin fixing seats are matched with the sliding rods, and an S-shaped valve set and an A-shaped valve set are correspondingly arranged on the end of the converter and the connecting frame. Through the arrangement of the S-shaped valve group and the A-shaped valve group, an oil pipe hose is shortened, the oil pipe hose can be effectively prevented from being broken, manual oil way connection which is required to be manually carried out every time an operation device is replaced is omitted, only a worker on a driver seat of an excavator needs to carry out key pressing operation, the period of replacing the operation device can be shortened, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator attachments, in particular to a quick connection mechanism for converting the oil circuit of attachments. Background Technique

[0002] There are as many as 60 - 70 replaceable working devices (attachments) on a type of excavator, such as grab buckets, side dump buckets, stone clamps, wood clamps, snow removal plates, bulldozer blades, breaker hammers, lifting and fork lift devices, etc.

[0003] The traditional method for replacing attachments requires disassembling and assembling pins, which requires special disassembly and installation tools. It takes more than 1 hour for a skilled worker to replace a working device once, and the pins are easily damaged during the disassembly and assembly process. It is time-consuming and laborious; construction safety cannot be guaranteed; for the attachment quick converter controlled by the swing of the hand lever, a staff member is required to push the hand lever, and the staff member needs to determine whether the installation is completed and inform the staff in the excavator driver's seat, which is also time-consuming and laborious and construction safety cannot be guaranteed; the traditional attachment connection oil circuit needs to be manually connected by workers, the connection time is long, and the oil pipe hose is long and heavy, so safety cannot be guaranteed, and it is time-consuming and laborious.

[0004] Therefore, we propose a quick connection mechanism for converting the oil circuit of attachments. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a quick connection mechanism for converting the oil circuit of attachments, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: A quick connection mechanism for converting the oil circuit of attachments, including a converter. The inside of the converter is hollowly arranged. A pin shaft penetrates through the bottom inside of the converter, and a connecting frame is rotationally connected through the pin shaft. A hydraulic rod is arranged inside the converter. On both sides of the end of the hydraulic rod, connecting rods are arranged, and a sliding rod is installed through the connecting rods. On the connecting frame, a push pin fixing seat is arranged corresponding to the two sliding rods. The push pin fixing seat is adapted to the sliding rod. An S-type valve group and an A-type valve group are correspondingly arranged on the end of the converter and the connecting frame.

[0007] The utility model can be further configured in a preferred example as follows: A rotating rod is arranged inside the bottom of the converter. The middle of the rotating rod is fixedly connected to the hydraulic cylinder of the hydraulic rod, and two mounting blocks are arranged corresponding to the hydraulic cylinder inside the bottom of the converter.

[0008] The utility model can be further configured in a preferred example as follows: Above the hydraulic rod, a T oil port, a P oil port, and a locking indicating pin are respectively arranged.

[0009] In a preferred embodiment, the present utility model can be further configured as follows: The S-shaped valve group and the A-shaped valve group are provided with a total of five short-stroke valves. Two tension brackets are provided at the bottom of the S-shaped valve group, and corresponding to the two tension brackets on the A-shaped valve group, limit holes are provided.

[0010] In a preferred embodiment, the present utility model can be further configured as follows: The S-shaped valve group and the A-shaped valve group are fixedly connected by closing the cover through the tension brackets and the five short-stroke valves.

[0011] In a preferred embodiment, the present utility model can be further configured as follows: Vertical plates are provided on both sides of the converter. Two connecting columns are fixedly provided between the vertical plates and are connected to the excavator arm through the two connecting columns.

[0012] Advantages of the present utility model:

[0013] The present utility model reduces the disassembly and assembly of the pin shafts. Only the operator in the driver's seat of the excavator needs to operate to quickly disassemble and assemble various working devices at the operation site, which not only ensures construction safety, reduces the disassembly and installation time, but also avoids damage to the pin shafts during the disassembly and assembly process.

[0014] Eliminates the need for manual connection of the oil circuit every time a different working device is changed. Only the operator in the driver's seat of the excavator needs to press a button to operate, which can shorten the cycle of changing the working device, improve efficiency, and provide more safety and convenience for the driver and the staff.

[0015] Through the setting of the S-shaped valve group and the A-shaped valve group, the length of the oil pipe hose is shortened, which can effectively prevent the oil pipe hose from bursting. Brief Description of the Drawings

[0016] Figure 1 It is a schematic front view of the overall closed structure of the present utility model;

[0017] Figure 2 It is a schematic partial cross-sectional structure view of the present utility model;

[0018] Figure 3 It is a schematic bottom view of the overall unfolded structure of the present utility model;

[0019] Figure 4 It is a schematic front view of the overall unfolded structure of the present utility model;

[0020] Figure 5 It is a schematic structure view of the hydraulic rod of the present utility model.

[0021] In the figure: 1. Converter; 2. Locking indicating pin; 3. T oil port; 4. P oil port; 5. Connecting column; 6. Connecting frame; 7. Hydraulic rod; 8. Slide rod; 9. S-type valve group; 10. A-type valve group; 11. Tensioning bracket; 12. Push pin fixing seat; 13. Pin shaft; 14. Vertical plate; 15. Rotating rod; 16. Mounting block. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0023] Please refer to Figures 1 - 5 , a quick connection mechanism for the oil circuit of a conversion attachment, including a converter 1. The interior of the converter 1 is hollowly arranged. A pin shaft 13 is penetrated through the bottom inside of the converter 1, and a connecting frame 6 is rotatably connected through the pin shaft 13. A hydraulic rod 7 is arranged inside the converter 1. Both sides of the end of the hydraulic rod 7 are provided with connecting rods, and a slide rod 8 is installed through the connecting rods. A push pin fixing seat 12 corresponding to the two slide rods 8 is arranged on the connecting frame 6. The push pin fixing seat 12 is adapted to the slide rod 8. An S-type valve group 9 and an A-type valve group 10 are correspondingly arranged at the end of the converter 1 and on the connecting frame 6.

[0024] The S-type valve group 9 and the A-type valve group 10 are provided with a total of five short-stroke valves. Two tensioning brackets 11 are arranged at the bottom of the S-type valve group 9. Limiting holes are opened on the A-type valve group 10 corresponding to the two tensioning brackets 11. The S-type valve group 9 and the A-type valve group 10 are fixedly connected by the tensioning brackets 11 and the five short-stroke valves through a cover.

[0025] Among them, two short-stroke valves are used for: such as tilting the bucket, hydraulic hammer; three short-stroke valves are used for: such as drum cutter, rigid compactor; four short-stroke valves are used for: such as rotatable grab; five short-stroke valves are used for: such as rotatable compactor.

[0026] A rotating rod 15 is arranged inside the bottom of the converter 1. The middle of the rotating rod 15 is fixedly connected to the hydraulic cylinder of the hydraulic rod 7, and two mounting blocks 16 corresponding to the hydraulic cylinder are arranged inside the bottom of the converter 1. Above the hydraulic rod 7, a T oil port 3, a P oil port 4 and a locking indicating pin 2 are respectively arranged.

[0027] When the P port 4 is inlet with oil and the T port 3 is outlet with oil, the hydraulic rod 7 connects the slide rod 8 to push forward, and the locking indicating pin 2 retracts. According to the retraction information of the locking indicating pin 2, the operator in the excavator driver's seat knows that the slide rod 8 has been inserted into the push rod fixing seat 12 provided on the connecting frame 6 and has been locked, and the attachment can work; when the T port 3 is inlet with oil and the P port 4 is outlet with oil, the hydraulic rod 7 connects the slide rod 8 to retract, and the locking indicating pin 2 pops out. According to the popping out information of the locking indicating pin 2, the operator in the excavator driver's seat knows that the slide rod 8 has withdrawn from the connecting frame 6, thus realizing the quick conversion of the attachment.

[0028] Vertical plates 14 are arranged on both sides of the converter 1, and two connecting columns 5 are fixedly arranged between the vertical plates 14 and are connected to the excavator arm through the two connecting columns 5.

[0029] Working principle: When this device is in use and it is necessary to quickly convert the attachment and switch the oil circuit, through an external oil pump, the hydraulic oil enters through the P port 4 and exits through the T port 3, thereby driving the hydraulic rod 7 to move, and then driving the slide rod 8 connected by a connecting rod to move. At the same time, it drives the locking indicating pin 2 connected to the hydraulic rod 7 to retract. The slide rod 8 moves to the inside of the push rod fixing seat 12 and abuts against the push rod fixing seat 12, enabling the attachment to work quickly; when the T port 3 is inlet with oil and the P port 4 is outlet with oil, it drives the hydraulic rod 7 to retract, and then drives the slide rod 8 to retract, causing the locking indicating pin 2 to pop out. The operator can know that the slide rod 8 is separated from the push rod fixing seat 12, and then switch the attachment. Through the cooperation of the S-type valve group 9 and the A-type valve group 10 arranged on the front side of the converter 1, and at the same time through the setting of the tensioning bracket 11, a firm hydraulic connection is established between the S-type valve group 9 and the A-type valve group 10. By installing the attachment on the A-type valve group 10 and switching different short-stroke valves to use different attachments. For example, two short-stroke valves are used for the tilt bucket and hydraulic hammer; three short-stroke valves are used for the drum cutter and rigid compactor; four short-stroke valves are used for the rotatable grab; five short-stroke valves are used for the rotatable compactor.

[0030] Finally, it should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A quick-connect mechanism for converting the oil circuit of accessories, characterized in that: The invention comprises a converter (1), wherein the interior of the converter (1) is hollow, a pin shaft (13) is provided through the bottom of the converter (1), and a connecting frame (6) is rotatably connected to the converter (1) via the pin shaft (13), a hydraulic rod (7) is provided inside the converter (1), connecting rods are provided on both sides of the ends of the hydraulic rod (7), and a sliding rod (8) is installed via the connecting rod, a push rod fixing seat (12) is provided on the connecting frame (6) corresponding to the two sliding rods (8), and the push rod fixing seat (12) is adapted to the sliding rod (8), and an S-type valve group (9) and an A-type valve group (10) are provided on the ends of the converter (1) and the connecting frame (6) respectively.

2. The oil circuit quick connection mechanism for converting accessories according to claim 1, characterized in that: A rotating rod (15) is provided on the inner side of the bottom of the converter (1), the middle part of the rotating rod (15) is fixedly connected to the hydraulic cylinder of the hydraulic rod (7), and two mounting blocks (16) are provided on the inner side of the bottom of the converter (1) corresponding to the hydraulic cylinder.

3. The oil circuit quick connection mechanism for converting accessories according to claim 1, characterized in that: A T oil port (3), a P oil port (4) and a locking indicator pin (2) are respectively arranged above the hydraulic rod (7).

4. The oil circuit quick connection mechanism for converting accessories according to claim 1, characterized in that: The S-type valve group (9) and the A-type valve group (10) are provided with a total of five short-stroke valves. Two tensioning brackets (11) are provided at the bottom of the S-type valve group (9), and limiting holes are provided on the A-type valve group (10) corresponding to the two tensioning brackets (11).

5. The oil circuit quick connection mechanism for converting accessories according to claim 4, characterized in that: The S-type valve group (9) and the A-type valve group (10) are fixedly connected via a tensioning bracket (11) and five short-stroke valve covers.

6. The oil circuit quick connection mechanism for converting accessories according to claim 1, characterized in that: Vertical plates (14) are provided on both sides of the converter (1), two connecting columns (5) are fixedly provided between the vertical plates (14), and the vertical plates (14) are connected to the excavator arm via the two connecting columns (5).

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