Hydraulic quick-change connector device

Abstract

The utility model provides a hydraulic quick-change connector device, and belongs to the technical field of quick-change connectors. According to the technical scheme, the hydraulic quick-change connector device comprises two hydraulic cylinders arranged on a main body, the two hydraulic cylinders are detachably connected with the main body, the two sides of the main body are each provided with a set of connecting supporting lugs, the two hydraulic cylinders are arranged between the two sets of connecting supporting lugs, extension rods are arranged on cylinder rods of the hydraulic cylinders, and the extension rods are connected with the main body. After a cylinder rod of the hydraulic cylinder extends out, the lengthening rod connected with the cylinder rod can penetrate through the corresponding connecting support lug to be connected with the accessory connecting plate. The single-cylinder single-piston-rod hydraulic cylinder has the advantages that the whole body structure does not need to be disassembled, only the corresponding single-cylinder single-piston-rod hydraulic cylinder needs to be disassembled, maintenance and disassembly are more convenient, the safety coefficient is higher, and the machine using cost is lower.

Description

Technical Field

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

[0002] In construction machinery, forklifts are a multifunctional lifting and handling equipment with an increasingly wide range of applications. The wider the application range of forklifts, the more frequently different attachments (forks, buckets, hoppers, load platforms, crushing shears, etc.) need to be replaced to meet different usage requirements. At present, forklifts use mechanical joints and single-cylinder double-piston rod double-acting hydraulic quick-change joints to connect different attachments.

[0003] Mechanical joints are manually operated to connect different attachments. The operation process is relatively cumbersome. During the connection process, the connecting pin needs to be hammered to pass through the pin, which is time-consuming, labor-intensive, and labor-intensive, thereby increasing labor costs. In the process of replacing different attachments, the pin needs to be hammered to achieve the purpose of disassembly and assembly. The hammering process causes great damage to the pin, which reduces the service life of the pin. In addition, there is a safety risk of hitting the hand during the hammering process, which increases the cost of the machine and reduces the safety factor.

[0004] Single cylinder double piston rod double acting hydraulic quick change joints connect different accessories. Because the connection between the single cylinder double piston rod double acting hydraulic cylinder barrel and the structural body of the quick change joint can only be fixed together by welding, and the stress point of the cylinder barrel is in the middle, it is easy to deform, resulting in the entire quick change joint being scrapped and having no repair value, which invisibly increases the cost of the machine; secondly, the single cylinder double piston rod double acting cylinder is used for a long time, and because the working conditions are relatively harsh, the sealing ring of the hydraulic cylinder needs to be replaced and maintained regularly. Since the single cylinder double piston rod double acting hydraulic cylinder barrel is welded to the structural body and cannot be removed, the entire structural part needs to be removed. The narrow space makes disassembly and assembly troublesome, time-consuming, labor-intensive, and labor-intensive, thereby increasing labor costs. Utility Model Content

[0005] The utility model aims to overcome the problems in the background technology and provide a hydraulic quick-change joint device which is detachable and easy to repair and maintain.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts a technical solution specifically as follows: a hydraulic quick-change joint device, including two hydraulic cylinders arranged on a main body, the two hydraulic cylinders are detachably connected to the main body, a group of connecting ears are respectively arranged on both sides of the main body, the two hydraulic cylinders are arranged between the two groups of connecting ears, and an extension rod is arranged on the cylinder rod of the hydraulic cylinder. After the cylinder rod of the hydraulic cylinder is extended, the extension rod connected thereto can pass through the corresponding connecting ears and be connected to the accessory connecting plate.

[0007] Furthermore, the hydraulic cylinder adopts a single-cylinder single-piston rod hydraulic cylinder. The force point of the single-cylinder single-piston rod is at the bottom of the cylinder barrel, which is not easy to be damaged and the bottom is also convenient for assembly. The traditional single-cylinder double-piston rod cylinder barrel cannot be assembled and can only be welded. The force point is in the middle and the welding points are mostly concentrated in the middle, and the cylinder barrel is easily damaged.

[0008] Furthermore, a hydraulic cylinder fixing plate is provided on the main body, pin holes are provided on the hydraulic cylinder fixing plate and the hydraulic cylinder, and the hydraulic cylinder fixing plate and the hydraulic cylinder are connected by a pin shaft, so they are easy to disassemble.

[0009] Furthermore, the main body is also provided with a middle connecting BOSS, a left limit mechanism, a right limit mechanism, a side plate, a hanging shaft BOSS, an oil pipe mounting bracket and a sensor. Two side plates are provided, which are respectively located on both sides of the main body. The left limit mechanism and the right limit mechanism are respectively provided on the side plates on both sides.

[0010] Furthermore, oil pipe joints are respectively provided at both ends of the hydraulic cylinder, and two hydraulic inlet and return oil pipes at the branch of the main control oil circuit are fixed by an oil pipe mounting bracket, and the two hydraulic inlet and return oil pipes are respectively connected to the two oil pipe joints through a tee to form a closed-loop hydraulic control unit circuit.

[0011] Furthermore, the middle connection BOSS and the hanging axis BOSS are both used to hang on the accessories to form a connection.

[0012] Furthermore, the sensor adopts a proximity switch for detecting the cylinder rod of the hydraulic cylinder to determine whether the hole on the attachment connecting plate is axially aligned with the extension rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the core feature of the present invention is that the forklift adopts two sets of single-cylinder single-piston rod double-acting hydraulic cylinder assembled quick-change joints to replace mechanical joints and single-cylinder double-piston rod double-acting hydraulic cylinder welded quick-change joints to connect accessories, and different accessories are connected by button operation, such as forks, buckets, hoppers, load platforms, crushing shears, etc., which is convenient to operate; at the same time, since the two sets of single-cylinder single-piston rod hydraulic cylinders are detachably installed on the main structure, it is convenient to repair or replace the sealing ring, and there is no need to remove the entire main structure, only the corresponding single-cylinder single-piston rod hydraulic cylinder needs to be removed; and the force point of each single-cylinder single-piston cylinder is at the bottom, which is not easy to be damaged, and the failure rate is reduced; therefore, the single-cylinder single-piston rod double-acting hydraulic cylinder assembled quick-change joint not only integrates the advantages of mechanical quick-change joints and single-cylinder double-piston rod double-acting hydraulic cylinder welded quick-change joints, but also highlights its own advantages: more convenient maintenance and disassembly; higher safety factor; low maintenance cost, quick maintenance time, lower machine cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] Figure 1 It is a front view of the utility model.

[0016] Figure 2 It is a rear view of the utility model.

[0017] Figure 3 It is a front structural schematic diagram of the utility model.

[0018] Figure 4 It is a rear view structural schematic diagram of the utility model.

[0019] Among them, the figure markings are: 1. main body; 2. hydraulic cylinder; 3. connecting lug; 4. extension rod; 5. hydraulic cylinder fixing plate; 6. pin shaft; 7. middle connecting BOSS; 8. left limit mechanism; 9. right limit mechanism; 10. side plate; 11. hanging shaft BOSS; 12. oil pipe mounting bracket; 13. sensor; 14. oil pipe joint. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Embodiment: As shown in the figure, the present embodiment provides a hydraulic quick-change joint device, including two hydraulic cylinders 2 arranged on a main body 1, the two hydraulic cylinders 2 are detachably connected to the main body 1, a group of connecting ears 3 are respectively arranged on both sides of the main body 1, the two hydraulic cylinders 2 are arranged between the two groups of connecting ears 3, and an extension rod 4 is arranged on the cylinder rod of the hydraulic cylinder 2. After the cylinder rod of the hydraulic cylinder 2 is extended, the extension rod 4 connected thereto can pass through the corresponding connecting ear 3 and be connected with the accessory connecting plate, a hydraulic cylinder fixing plate 5 is arranged on the main body 1, pin holes are arranged on the hydraulic cylinder fixing plate 5 and the hydraulic cylinder 2, and the hydraulic cylinder fixing plate 5 and the hydraulic cylinder 2 are connected by a pin shaft 6. The hydraulic cylinder 2 adopts a single-cylinder single-piston rod hydraulic cylinder, and the force point of the single-cylinder single-piston rod is at the bottom of the cylinder barrel, which is not easy to be damaged, and the bottom is also convenient for assembly. The cylinder barrel of the traditional single-cylinder double-piston rod cannot be assembled and can only be welded, and the force point is in the middle and the welding points are mostly concentrated in the middle, and the cylinder barrel is easily damaged.

[0022] The main body 1 is also provided with a middle connection BOSS7, a left limit mechanism 8, a right limit mechanism 9, a side plate 10, a hanging shaft BOSS11, an oil pipe mounting bracket 12 and a sensor 13. Two side plates 10 are provided, which are respectively located on both sides of the main body 1. The left limit mechanism 8 and the right limit mechanism 9 are respectively arranged on the side plates 10 on both sides. Oil pipe joints 14 are respectively arranged at both ends of the hydraulic cylinder 2. The two hydraulic inlet and return oil pipes at the branch of the main control oil circuit are fixed by the oil pipe mounting bracket 12. The two hydraulic inlet and return oil pipes are respectively connected to the two oil pipe joints 14 through a tee to form a closed-loop hydraulic control unit circuit. The middle connection BOSS7 and the hanging shaft BOSS11 are used to hang on the attachment to form a connection. The sensor 13 adopts a proximity switch to detect the cylinder rod of the hydraulic cylinder 2 to determine whether the hole on the attachment connecting plate is axially aligned with the extension rod 4; the two sets of single-cylinder single-piston rod double-acting hydraulic cylinders 2 are standard parts and can be purchased normally on the market. If the single-cylinder single-piston rod double-acting hydraulic cylinder 2 needs to be repaired, the hydraulic cylinder 2 can be directly removed from the quick-change joint body 1 for repair, which is convenient and quick; if the single-cylinder single-piston rod double-acting hydraulic cylinder 2 is broken and cannot be repaired, a new hydraulic cylinder 2 of the same model can be purchased to replace it without scrapping the quick-change joint; the single-cylinder single-piston rod double-acting hydraulic cylinder 2 is an assembled quick-change joint, and a left limit mechanism 8 and a right limit mechanism 9 are added on the left and right sides respectively, thereby making the safety factor higher.

[0023] When in use, first hang it on the attachment through the hanging shaft BOSS11; provide power source for the single-cylinder single-piston rod double-acting hydraulic cylinder 2 through the main engine branch hydraulic control system unit; two hydraulic inlet and return pipes at the branch of the main control oil circuit are fixed by the oil pipe mounting bracket 12, and the two hydraulic inlet and return pipes are respectively connected to the two oil pipe joints 14 on the single-cylinder single-piston rod double-acting hydraulic cylinder 2 through a tee, thereby completing the closed-loop hydraulic control unit circuit; control the balance position of the single-cylinder single-piston rod double-acting hydraulic cylinder 2 through the sensor 13 to determine whether the attachment hole is aligned with the axis of the extension rod 4.

[0024] After the sensor 13 detects that it is in position, it gives a signal, which is transmitted to the central console. The central console gives a control command, and then the piston rods of the two sets of single-cylinder single-piston rod double-acting hydraulic cylinders 2 extend to drive the extension rod 4 to pass through the connecting lug 3 and connect with the attachment, and then the pressure sensor 13 detects the pressure signal to determine whether to let the piston rod continue to extend the command;

[0025] If the detection is not in place, the sensor 13 will feedback a signal, and the signal will be transmitted to the center console. At this time, the control console buzzer will tick to alarm. At this time, it is necessary to adjust by telescoping the BOSS7 connecting rod pair connected to the middle until the signal is detected to be OK, otherwise the piston rod will not extend when the center console gives the command; if the accessories need to be replaced, the piston rods of the two sets of single-cylinder single-piston rod double-acting hydraulic cylinders 2 need to be retracted, and the retraction of the piston rod will drive the extension rod 4 to retract, thereby loosening the quick-change connector and the accessories, and the connection with the accessories can be safely and efficiently achieved through the telescopic movement of the hydraulic cylinder 2.

[0026] 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 hydraulic quick-change joint device, characterized in that: The utility model comprises two hydraulic cylinders (2) arranged on a main body (1), wherein the two hydraulic cylinders (2) are detachably connected to the main body (1), a group of connecting lugs (3) are respectively arranged on both sides of the main body (1), and the two hydraulic cylinders (2) are arranged between the two groups of connecting lugs (3). An extension rod (4) is arranged on the cylinder rod of the hydraulic cylinder (2), and after the cylinder rod of the hydraulic cylinder (2) is extended, the extension rod (4) connected thereto can pass through the corresponding connecting lug (3) and be connected to the attachment connecting plate.

2. A hydraulic quick-change joint device according to claim 1, characterized in that: The hydraulic cylinder (2) is a single-cylinder single-piston rod hydraulic cylinder.

3. A hydraulic quick-change joint device according to claim 1, characterized in that: The main body (1) is provided with a hydraulic cylinder fixing plate (5), the hydraulic cylinder fixing plate (5) and the hydraulic cylinder (2) are both provided with pin holes, and the hydraulic cylinder fixing plate (5) and the hydraulic cylinder (2) are connected via a pin shaft (6).

4. A hydraulic quick-change joint device according to claim 1, characterized in that: The main body (1) is also provided with a middle connecting BOSS (7), a left limiting mechanism (8), a right limiting mechanism (9), a side plate (10), a hanging shaft BOSS (11), an oil pipe mounting bracket (12) and a sensor (13); two side plates (10) are provided, which are respectively located on both sides of the main body (1); and the left limiting mechanism (8) and the right limiting mechanism (9) are respectively provided on the side plates (10) on both sides.

5. A hydraulic quick-change joint device according to claim 4, characterized in that: Oil pipe joints (14) are respectively provided at both ends of the hydraulic cylinder (2); two hydraulic oil inlet and return pipes at the branch of the main control oil circuit are fixed via an oil pipe mounting bracket (12); the two hydraulic oil inlet and return pipes are respectively connected to the two oil pipe joints (14) via a tee, so as to form a closed-loop hydraulic control unit circuit.

6. A hydraulic quick-change joint device according to claim 4, characterized in that: The middle connection BOSS (7) and the hanging shaft BOSS (11) are both used to be hung on the attachment to form a connection.

7. A hydraulic quick-change joint device according to claim 4, characterized in that: The sensor (13) is a proximity switch used to detect the cylinder rod of the hydraulic cylinder (2) to determine whether the hole on the attachment connecting plate is axially aligned with the extension rod (4).

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