Hydraulic quick-change connector

Abstract

The utility model relates to the technical field of excavators, and discloses a hydraulic quick-change connector which comprises a fixed supporting frame, the fixed supporting frame comprises two supporting side plates, a connecting plate, a connecting seat and a pin hole, the tops of the two supporting side plates are fixedly connected with the connecting plate, the bottoms of the two supporting side plates are fixedly connected with the connecting seat, and the pin hole is connected with the connecting seat. Two pin holes are formed in the left sides of the two supporting side plates correspondingly, a first pin shaft and a second pin shaft are inserted into the two pin holes correspondingly in a matched mode, the front end of the first pin shaft and the front end of the second pin shaft are sleeved with pin sleeves in a matched mode correspondingly, a connecting frame is fixedly connected to the interior of the fixed supporting frame, and the bottom of an oil cylinder is hinged to the connecting base; the bottom of the connecting frame is fixedly connected with fixed calipers in a matched mode, and the top of the connecting frame is provided with quick-change calipers in a matched mode. Manual work is replaced by machinery, rapid replacement of working accessories of the excavator is achieved, working efficiency is improved, labor cost is reduced, and operation safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a hydraulic quick-change joint. Background Art

[0002] Excavator quick couplers, also known as quick-change connectors or quick connectors, can quickly install and switch various components (buckets, ripper, breaker, hydraulic shears, etc.) on the excavator, expanding the excavator's range of use, saving time, and improving work efficiency.

[0003] However, traditional hydraulic joint replacement methods usually rely on manual operation. Operators need to shut down the equipment, disconnect the hydraulic connection pipes, and disassemble and assemble the joints on site. This process is not only time-consuming and labor-intensive, but may also lead to hydraulic system leakage, equipment failure, and even safety accidents due to human error.

[0004] Based on this, the utility model designs a hydraulic quick-change connector to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a hydraulic quick-change connector to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: A hydraulic quick-change joint comprises a fixed support frame, wherein the fixed support frame comprises two supporting side plates, a connecting plate, a connecting seat and a pin hole, the two supporting side plates are arranged parallel and symmetrically front and back, the tops of the two supporting side plates are fixedly connected to the connecting plate, the bottoms of the two supporting side plates are fixedly connected to the connecting seat, two pin holes are provided on the left sides of the two supporting side plates, a pin shaft 1 and a pin shaft 2 are respectively inserted into the two pin holes, and the front ends of the pin shaft 1 and the pin shaft 2 are both matched with pin sleeves, the interior of the fixed support frame is fixedly connected to the connecting frame, an oil cylinder is provided in the connecting frame, the bottom of the oil cylinder is hinged on the connecting seat, a hinge pin is matched and inserted in the connecting seat, the connecting seat is limitably connected to the oil cylinder through the hinge pin, the bottom of the connecting frame is matched and fixedly connected to the fixed caliper, the top of the connecting frame is matched with the quick-change caliper, the rear side of the quick-change caliper is matched and connected to the locking pin, and the locking pin is hinged to the top end of the output shaft of the oil cylinder.

[0007] Preferably, the first pin is used for detachably connecting to the I-frame on the excavator, and the second pin is used for detachably connecting to the axle head on the excavator.

[0008] Preferably, the pin sleeve is embedded in the pin hole, and the front ends of the first and second pin shafts are fixedly connected to the fixed support frame by means of the pin sleeve.

[0009] Preferably, the quick-change caliper is transmission-connected to the output end of the oil cylinder via the locking pin, and the fixed caliper and the quick-change caliper are both arranged on the right side of the fixed support frame.

[0010] Preferably, the fixed caliper and the quick-change caliper are detachably connected to the working attachment of the excavator through oil cylinder transmission.

[0011] Preferably, a pivot pin for connecting to a connecting arm of an excavator is matched and inserted into the top of the fixed support frame, and a safety pin is also matched and inserted into the top of the fixed support frame.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0013] 1. The utility model provides a fixed caliper and a quick-change caliper. The quick-change caliper is connected to the output end of the cylinder through a locking pin. The operator realizes the opening and closing action of the quick-change caliper through hydraulic control to quickly connect or disconnect the working accessories. The fixed caliper and the quick-change caliper are used in conjunction with each other to enhance the connection reliability and reduce the risk of accidents caused by improper operation. The load-bearing of the first and second pins is used to ensure the stable connection between the quick-change head and the I-frame and the axle, ensuring the flexible operation of the quick-change head. By replacing manual labor with machinery, the rapid replacement of the working accessories of the excavator is realized, the working efficiency is improved, the labor cost is reduced, and the safety of operation is ensured.

[0014] 2. The fixed caliper and quick-change caliper in the utility model are detachably connected to the excavator working accessories through cylinder transmission. A pivot pin and a safety pin are set on the top of the fixed support frame. The pivot pin serves as the center point of rotation, and the safety pin ensures the safety of the connection. The excavator working accessories such as buckets and breaker hammers are firmly connected to the quick-change head, supporting rapid replacement and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 3 This is a side structural diagram of the present utility model;

[0018] Figure 4 It is a schematic diagram of the top structure of the utility model.

[0019] Wherein: 1, fixed support frame; 101, support side plate; 102, connecting plate; 103, connecting seat; 104, pin hole; 2, pin shaft one; 3, pin shaft two; 4, pin sleeve; 5, connecting frame; 6, oil cylinder; 7, hinge pin; 8, fixed caliper; 9, quick-change caliper; 10, locking pin; 11, pivot pin; 12, safety pin. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] Please refer to Figure 1 - Figure 3 It is illustrated that the hydraulic quick-change connector in embodiment 1 includes a fixed support frame 1, the fixed support frame 1 includes two support side plates 101, a connecting plate 102, a connecting seat 103 and pin holes 104, the two support side plates 101 are arranged in parallel and symmetrically from front to back, the top of the two support side plates 101 is fixedly connected with the connecting plate 102, the bottom of the two support side plates 101 is fixedly connected with the connecting seat 103, the left side of the two support side plates 101 is provided with two pin holes 104, pin shaft one 2 and pin shaft two 3 are matched and inserted into the two pin holes 104 respectively, the front end of pin shaft one 2 and pin shaft two 3 is matched and sleeved with the pin sleeve 4, the inside of the fixed support frame 1 is fixedly connected with the connecting frame 5, the connecting frame 5 is provided with the oil cylinder 6, the bottom of the oil cylinder 6 is hinged to the connecting seat 103, the connecting seat 103 is matched and inserted with the hinge pin 7, the connecting seat 103 is limitingly connected with the oil cylinder 6 through the hinge pin 7, the bottom of the connecting frame 5 is matched and fixedly connected with the fixed caliper 8, the top of the connecting frame 5 is matched and provided with the quick-change caliper 9, the rear side of the quick-change caliper 9 is matched and connected with the locking pin 10, the locking pin 10 is hinged to the top end of the output shaft of the oil cylinder 6;

[0023] Please refer to Figure 2 and Figure 3 Pin shaft one 2 in the illustration is used for detachable connection with the I-shaped frame on the excavator, pin shaft two 3 is used for detachable connection with the Malan head on the excavator;

[0024] In this embodiment, the operator operates the cylinder 6 through the hydraulic control device to realize the opening and closing action of the quick-change caliper 9. When the cylinder 6 pushes the locking pin 10, the quick-change caliper 9 will open, allowing the excavator's working accessories such as buckets, ripper, etc. to be quickly connected or disconnected. When the locking pin 10 retracts, the quick-change caliper 9 will tightly clamp the pin shaft 1 2 or the pin shaft 2 3 to ensure the stable connection of the working accessories. In addition, the coordinated use of the fixed caliper 8 and the quick-change caliper 9 further enhances the reliability of the connection and reduces the risk of accidents caused by improper operation. When the excavator is operating, the pivot pin 11 set at the top of the fixed support frame 1 can be connected to the connecting arm of the excavator to ensure the stability and reliability of the entire quick-change joint device.

[0025] It should be noted that when the excavator is operating, the connection between the I-frame and the axle and the quick-change head is achieved through the pin 1 2 and the pin 2 3 to achieve stable force transmission. By fixing the pin hole 104 on the support frame 1 corresponding to the pin hole on the I-frame, the pin 1 2 and the pin 2 3 are passed through these holes and fixed. Through the support of the pin 1 2 and the pin 2 3, the quick-change head can be firmly connected to the I-frame and the axle, and it is ensured that the quick-change head can be flexibly operated and will not loosen or fall off. The hydraulic control realizes the rapid replacement of the excavator working accessories, which greatly improves the working efficiency and reduces the labor cost. The mechanized operation reduces the operating risk and ensures the safety of the operation.

[0026] Example 2

[0027] See also Figure 2 and Figure 3 Example 2 is described. This embodiment further illustrates Example 1. In the figure, the pin sleeve 4 is embedded in the pin hole 104, and the front ends of the pin shaft 1 2 and the pin shaft 2 3 are fixedly connected to the fixed support frame 1 by the pin sleeve 4.

[0028] Furthermore, the quick-change caliper 9 is transmission-connected to the output end of the oil cylinder 6 via a locking pin 10, and both the fixed caliper 8 and the quick-change caliper 9 are arranged on the right side of the fixed support frame 1;

[0029] In this embodiment, the stability of pin shaft 1 2 and pin shaft 2 3 in the quick-change joint is ensured by the cooperation between the front ends of pin shaft 1 2 and pin shaft 2 3 and the pin sleeve 4. By using the pin sleeve 4, not only the reliability of the connection is improved, but also the wear problem caused by long-term use is reduced. In addition, the quick-change caliper 9 and the output end of the cylinder 6 are connected by a transmission of the locking pin 10, so that the operator can realize the opening and closing action of the quick-change caliper 9 through simple hydraulic control, thereby quickly replacing the working accessories of the excavator.

[0030] It should be noted that the quick-change caliper 9 can be quickly opened or tightly clamped by the oil cylinder 6, so that the working accessories of the excavator such as the bucket and the ripper can be quickly connected or disconnected, which greatly improves the working efficiency.

[0031] Example 3

[0032] See also Figure 3 and Figure 4 Example 3 is described. This embodiment further illustrates Example 2. In the figure, the fixed caliper 8 and the quick-change caliper 9 are detachably connected to the working attachment of the excavator through the transmission of the oil cylinder 6.

[0033] Furthermore, a pivot pin 11 for connecting to the excavator connecting arm is matched and inserted on the top of the fixed support frame 1, and a safety pin 12 is also matched and inserted on the top of the fixed support frame 1;

[0034] In this embodiment, the pivot pin 11 plays a connecting role by being inserted between the fixed support frame 1 and other mechanical parts on the excavator, such as the connecting arm, the device bracket, etc., to connect the two parts together. The pivot pin 11 can serve as the center point of rotation, so that the quick-change head can rotate flexibly during operation, and the safety pin 12 is used to ensure the safe connection between the quick-change head and the connecting part, preventing the quick-change head from accidentally falling off or loosening during operation, thereby ensuring the operational safety and stability of the equipment.

[0035] It should be noted that the working attachments of the excavator can be buckets, breaker hammers, etc., which can be firmly connected to the quick-change head and support quick replacement. When the operator selects an attachment and aligns it with the quick-change head, the locking mechanism between the quick-change caliper 9 and the fixed caliper 8 will be activated. Under the action of the cylinder 6, the quick-change caliper 9 will firmly lock the attachment to the fixed caliper 8 part of the quick-change head to ensure that there is no looseness between the attachment and the quick-change head. When the attachment needs to be replaced and released, it is quickly released through the cylinder 6, and the quick-change caliper 9 will automatically open to separate the fixed caliper 8 from the attachment, thereby allowing the operator to replace different attachments for use.

[0036] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic quick-change connector, comprising a fixed support frame (1), characterized in that: The fixed support frame (1) comprises two supporting side plates (101), a connecting plate (102), a connecting seat (103) and a pin hole (104). The two supporting side plates (101) are arranged parallel and symmetrically in front and back. The tops of the two supporting side plates (101) are fixedly connected with the connecting plate (102). The bottoms of the two supporting side plates (101) are fixedly connected with the connecting seat (103). Two pin holes (104) are respectively provided on the left sides of the two supporting side plates (101). A pin shaft 1 (2) and a pin shaft 2 (3) are respectively inserted into the two pin holes (104). The front ends of the pin shaft 1 (2) and the pin shaft 2 (3) are both matched with a pin sleeve (4). The interior of the fixed support frame (1) is fixedly connected to a connecting frame (5), an oil cylinder (6) is provided in the connecting frame (5), the bottom of the oil cylinder (6) is hinged on the connecting seat (103), a hinge pin (7) is matched and inserted in the connecting seat (103), the connecting seat (103) is limitedly connected to the oil cylinder (6) through the hinge pin (7), the bottom of the connecting frame (5) is matched and fixedly connected to a fixed caliper (8), the top of the connecting frame (5) is matched and provided with a quick-change caliper (9), the rear side of the quick-change caliper (9) is matched and connected to a locking pin (10), and the locking pin (10) is hinged to the top end of the output shaft of the oil cylinder (6).

2. The hydraulic quick-change connector according to claim 1, characterized in that: The pin shaft 1 (2) is used for detachably connecting with the I-beam on the excavator, and the pin shaft 2 (3) is used for detachably connecting with the axle on the excavator.

3. The hydraulic quick-change connector according to claim 1, characterized in that: The pin sleeve (4) is embedded in the pin hole (104), and the front ends of the pin shaft 1 (2) and the pin shaft 2 (3) are fixedly connected to the fixed support frame (1) by means of the pin sleeve (4).

4. The hydraulic quick-change connector according to claim 1, characterized in that: The quick-change caliper (9) is transmission-connected to the output end of the oil cylinder (6) via the locking pin (10), and the fixed caliper (8) and the quick-change caliper (9) are both arranged on the right side of the fixed support frame (1).

5. The hydraulic quick-change connector according to claim 1, characterized in that: The fixed caliper (8) and the quick-change caliper (9) are detachably connected to the working attachment of the excavator through the transmission of the oil cylinder (6).

6. The hydraulic quick-change connector according to claim 1, characterized in that: A pivot pin (11) for connecting to an excavator connecting arm is matched and inserted into the top of the fixed support frame (1), and a safety pin (12) is also matched and inserted into the top of the fixed support frame (1).

Images