A tool quick connect device

Abstract

The utility model relates to a kind of tool quick connecting device, belong to engineering machinery technical field, it is characterized by: upper connecting frame component, including upper fixed frame, female connector of hydraulic quick connector, lock rod, driving part;The top of the upper fixed frame is used to connect engineering machinery, and its both ends are respectively equipped with C-shaped groove, 1 / 4 circular arc groove;Lower connecting frame component, including lower fixed frame, front fixed shaft, rear fixed shaft, male connector of hydraulic quick connector, the bottom of the lower fixed frame is used to connect tool.C-shaped groove and front fixed shaft are engaged in sequence, 1 / 4 circular arc groove and rear fixed shaft are engaged, and female connector, lock rod are made to synchronous linear displacement by driving part, to make female connector, male connector fast joint, while lock rod displacement is to rear fixed shaft below and lock the upper and lower fixed frame, the quick connection of structure part, hydraulic part can be realized.

Description

Technical Field

[0001] This utility model relates to a quick-connect device for attachments, belonging to the field of engineering machinery technology. Background Technology

[0002] Currently, quick-change attachments in the construction machinery field are mainly hydraulically driven. Hydraulic quick-change is characterized by a traditional hydraulic cylinder-driven locking mechanism, with excavator attachment quick-change devices being a typical example. These devices achieve clamping and releasing of the gripper through the extension and retraction of the hydraulic cylinder, and structurally typically include a fixed hook, a movable hook, and a safety pin.

[0003] However, these devices only allow for quick connections of the structure; the hydraulic components require manual installation and tightening of the hydraulic lines, which is inefficient. Furthermore, the prolonged unscrewing and tightening of the pipe joints poses a risk of damage, necessitating periodic replacement of the hydraulic pipe joints and increasing maintenance costs. Additionally, the manual insertion of safety pins typically takes more than 3 minutes, resulting in wasted manpower. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a quick-connect device for attachments, which enables rapid connection of structural and hydraulic components.

[0005] The technical solution of this utility model is as follows: A quick-connect device, characterized in that it includes: an upper connecting frame assembly and a lower connecting frame assembly; wherein: The upper connecting frame assembly includes an upper fixed frame, a female connector of a hydraulic quick-connect coupling, a locking rod, and a driving component; the top of the upper fixed frame is used to connect engineering machinery, and its two ends are respectively provided with a C-shaped groove and a 1 / 4 arc groove; the lower connecting frame assembly includes a lower fixed frame, a front fixed shaft, a rear fixed shaft, and a male connector of a hydraulic quick-connect coupling, and the bottom of the lower fixed frame is used to connect attachments.

[0006] The upper and lower fixed frames are connected to the engineering machinery and attachments in terms of their structural components, and the female and male connectors of the hydraulic quick-connect couplings are connected to the hydraulic lines of the engineering machinery and attachments in terms of their hydraulic components. By driving the engineering machinery, the C-shaped groove is engaged with the front fixed shaft and the 1 / 4 arc groove is engaged with the rear fixed shaft in sequence. The female connector and the locking rod are moved linearly in sync by the driving component, so that the female and male connectors are quickly engaged. At the same time, the locking rod is moved to the bottom of the rear fixed shaft to lock the upper and lower fixed frames.

[0007] In the above scheme, the front and rear fixed shafts are arranged in parallel, and the C-shaped groove and the 1 / 4 arc groove are arranged in opposite directions. The C-shaped groove serves as an open shaft hole, which facilitates the rotation and support of the front fixed shaft. In the locked state, the C-shaped groove clamps and fixes the front fixed shaft, and the 1 / 4 arc groove works together with the locking rod to clamp and fix the rear fixed shaft. Through the locking and driving components, the upper and lower fixed frames are locked, so that the female and male connectors can be quickly engaged, realizing the rapid connection between the engineering machinery and the attachments, saving time and operation steps, ensuring the firmness of the connection, and improving the versatility and flexibility of the equipment.

[0008] Furthermore, the driving component is a pair of locking cylinders, the piston rods of the pair of locking cylinders are arranged in parallel and fixed to the upper fixing frame respectively; the cylinder barrels of the pair of locking cylinders jointly clamp the fixing female connector; the locking rod is two rods, the pair of locking rods are arranged in parallel and fixedly connected to the cylinder barrels of the pair of locking cylinders respectively.

[0009] In the above scheme, the hydraulic interface is simultaneously fixed by locking the hydraulic cylinder while the structure is secured. The locking cylinder provides stable power for linear displacement, driving the female connector and locking rod to move synchronously; a pair of cylinders clamp and fix the female connector, ensuring its stability during movement; the locking rod is fixedly connected to the cylinder, ensuring the synchronous action of the locking rod and the cylinder, making the entire device structure more compact.

[0010] Furthermore, the upper fixing frame is also provided with a pair of guide blocks, which are located between the cylinder and the 1 / 4 arc groove, and the pair of guide blocks are respectively provided with through holes for the corresponding locking rods to pass through.

[0011] In the above scheme, the guide block provides guidance for the movement of the locking rod, ensuring that the locking rod can accurately move to the designated position. This serves two purposes: firstly, it supports the locking rod, and secondly, it ensures displacement accuracy. Furthermore, the guide block is located between the cylinder and the 1 / 4 circular groove, and it can axially limit the displacement of the cylinder.

[0012] Furthermore, the male connector is installed on the lower fixed frame near the rear fixed shaft, which improves the connection reliability between the female connector and the male connector, facilitates quick alignment and engagement with the female connector, and makes the operation more convenient and faster.

[0013] Furthermore, the end of the locking rod is provided with a groove that matches the shape of the rear fixed shaft. In the locked state, the bottom of the groove is in close contact with the rear fixed shaft, which can better lock the rear fixed shaft and make the locking more secure.

[0014] Furthermore, the upper fixing frame is provided with a through hole for the hydraulic pipeline of the locking cylinder to pass through, so as to ensure the normal operation of the locking cylinder.

[0015] The beneficial effects of this utility model are as follows: 1) High efficiency, enabling quick structural and hydraulic connections, all completed simultaneously during the connection process, thus achieving connection of equipment structure and pipelines, resulting in high efficiency and good reliability; 2) Good adaptability: The quick-connect device is divided into two parts, upper and lower connecting frame assemblies. The upper connecting frame assembly is bolted to the top of the construction machinery, and the lower connecting frame assembly is pre-connected to the attachment via bolts. At the same time, the hydraulic joints of the upper and lower connecting frame assemblies are pre-connected to the construction machinery and attachments respectively, which can be used for a long time without disassembly and replacement. It has a compact structure, high degree of universality, can realize quick switching between different attachments, and has a wide range of application scenarios. 3) Good connection stability. One end is clamped and fixed by the C-groove shaft hole, which is simple and reliable to operate. The other end first presses the rear fixed shaft into the 1 / 4 arc groove, and then uses the locking cylinder to extend the locking rod to fix the rear fixed shaft firmly. The structure fits tightly and there is no shaking. The hydraulic quick coupling is realized in the process of extending the locking cylinder, which is precise in positioning and stable and reliable in connection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the upper connecting frame assembly in this utility model; Figure 3 This is a schematic diagram of the lower connecting frame assembly in this utility model; Figure 4 This is a cross-sectional schematic diagram of the quick-connect device of this utility model in the locked state; Figure 5 This is a schematic diagram showing the installation and connection of the quick-connect device of this utility model with engineering machinery (cranes); Figure 6 This is a flowchart of the locking process of the quick-connect device of this utility model; In the figure: Upper connecting frame assembly 1, lower connecting frame assembly 2, upper fixed frame 3, female connector of hydraulic quick connector 4, locking rod 5, locking cylinder 6, piston rod 6-1, cylinder 6-2, C-groove 7, 1 / 4 arc groove 8, lower fixed frame 9, front fixed shaft 10, rear fixed shaft 11, male connector of hydraulic quick connector 12, through hole 13, mounting hole 14, guide block 16, slot 17, attachment 18, quick connector device of this utility model 19, connecting arm 20, connecting rod 21, cylinder 22, boom assembly 23, pipeline 24. Detailed Implementation

[0017] A quick-connect device for attachments, such as Figure 1 As shown, it includes: upper connecting frame assembly 1 and lower connecting frame assembly 2.

[0018] Upper connecting frame assembly, such as Figure 2As shown, it includes an upper fixed frame 3 for connecting engineering machinery, a female connector 4 for hydraulic quick-connect coupling, a pair of locking rods 5, and a pair of locking cylinders 6. The two ends of the upper fixed frame are respectively provided with C-shaped grooves 7 and 1 / 4 arc grooves 8, and the C-shaped grooves 7 and 1 / 4 arc grooves are arranged back to back.

[0019] Lower connecting frame assembly, such as Figure 3 As shown, the device includes a lower fixed frame 9 for connecting attachments, a front fixed shaft 10, a rear fixed shaft 11, and a male connector 12 for hydraulic quick-connect couplings. The front and rear fixed shafts are arranged in parallel, and the male connector is installed on the lower fixed frame on the side near the rear fixed shaft.

[0020] The piston rods of a pair of locking cylinders 6 are arranged in parallel and fixed to the upper fixing frame 3 respectively; the cylinder barrels of the pair of locking cylinders jointly clamp and fix the female connector 4; a pair of locking rods 5 are arranged in parallel and fixedly connected to the cylinder barrels of the pair of locking cylinders respectively. The upper fixing frame is provided with through holes 13 for the hydraulic lines of the locking cylinders to pass through and mounting holes 14 for easy connection with engineering machinery, and the lower fixing frame is provided with mounting holes for easy connection with attachments.

[0021] The C-shaped groove is engaged with the front fixed shaft in sequence, and the 1 / 4 arc groove is engaged with the rear fixed shaft. The female connector and the locking rod are moved linearly in sync by the driving component, so that the female connector and the male connector can be quickly engaged. At the same time, the locking rod is moved to the bottom of the rear fixed shaft to lock the upper and lower fixed frames.

[0022] In one embodiment of the present invention, the upper fixing frame 3 is further provided with a pair of guide blocks 16, the guide blocks are located between the cylinder and the 1 / 4 arc groove, and the pair of guide blocks are respectively provided with through holes for the corresponding locking rods to pass through.

[0023] In one embodiment of this utility model, the end of the locking rod is provided with a groove 17 that matches the shape of the rear fixed shaft, as shown in Figure 4. In the locked state, the bottom of the groove is in close contact with the rear fixed shaft, which can better lock the rear fixed shaft and make the locking more secure.

[0024] In one embodiment of this utility model, the quick-connect device is applied to the entire construction machinery (taking a crane as an example): (1) Connection preparation: Install the upper fixing bracket to the front end of the connecting arm 20 of the crane boom using bolts, and fix the lower fixing bracket to the attachment 18 using bolts. During the initial connection, it is also necessary to connect and fix the hydraulic quick-connect coupling to the hydraulic lines of the boom and attachment (e.g., Figure 5 (as shown) (2) Locking connection: To start the equipment, first, adjust the angle of the connecting arm 20 using the hydraulic cylinder 22 and connecting rod 21, so that the C-groove of the upper fixed frame is locked and fixed to the front fixed shaft of the lower fixed frame (e.g., Figure 6(As shown in ②); then, adjust the angle of the hydraulic cylinder 22 to rotate the connecting arm 20, pressing the other end of the 1 / 4 arc groove against the rear fixed shaft. At this time, the male and female connectors are aligned (as shown in ②). Figure 6 (As shown in ③ and ④); Finally, the locking cylinder extends, pushing the locking rod to move and securely fix the rear fixed shaft. The hydraulic quick-connect is achieved synchronously during the extension of the locking cylinder, ultimately realizing the hydraulic quick-connect of the structure (as shown in ③ and ④). Figure 6 (As shown in ⑤).

Claims

1. A quick-connect device for an accessory, characterized in that, include: The upper connecting frame assembly includes an upper fixed frame, a female connector of a hydraulic quick-connect coupling, a locking rod, and a driving component; the top of the upper fixed frame is used to connect engineering machinery, and its two ends are respectively provided with a C-shaped groove and a 1 / 4 arc groove; The lower connecting frame assembly includes a lower fixed frame, a front fixed shaft, a rear fixed shaft, and a male connector for a hydraulic quick-connect coupling. The bottom of the lower fixed frame is used to connect attachments. The C-shaped groove is engaged with the front fixed shaft in sequence, and the 1 / 4 arc groove is engaged with the rear fixed shaft. The female connector and the locking rod are moved linearly in sync by the driving component, so that the female connector and the male connector can be quickly engaged. At the same time, the locking rod is moved to the bottom of the rear fixed shaft to lock the upper and lower fixed frames.

2. The quick-connect device for a fitting according to claim 1, characterized in that, The driving component is a pair of locking cylinders, the piston rods of the pair of locking cylinders are arranged in parallel and fixed to the upper fixing frame respectively; the cylinder barrels of the pair of locking cylinders jointly clamp the fixing female connector; the locking rod is two rods, the pair of locking rods are arranged in parallel and fixedly connected to the cylinder barrels of the pair of locking cylinders respectively.

3. The quick-connect device for a fitting according to claim 2, characterized in that, The upper fixed frame is also provided with a pair of guide blocks, which are located between the cylinder and the 1 / 4 arc groove, and the pair of guide blocks are respectively provided with through holes for the corresponding locking rods to pass through.

4. The quick-connect device for a fitting according to claim 1, characterized in that, The male connector is installed on the lower fixing bracket on the side near the rear fixing shaft.

5. A quick-connect device for a fitting according to claim 2, characterized in that, The end of the locking rod is provided with a slot that matches the shape of the rear fixed shaft.

6. A quick-connect device for an accessory according to claim 2, characterized in that, The upper fixed frame is provided with a through hole for the hydraulic pipeline of the locking cylinder to pass through.

Images