WO2020106239A1 - Hydraulic pin connection device for practical installation and removal of different work tool attachments to construction machinery. - Google Patents

Hydraulic pin connection device for practical installation and removal of different work tool attachments to construction machinery.

Info

Publication number
WO2020106239A1
WO2020106239A1 PCT/TR2019/050119 TR2019050119W WO2020106239A1 WO 2020106239 A1 WO2020106239 A1 WO 2020106239A1 TR 2019050119 W TR2019050119 W TR 2019050119W WO 2020106239 A1 WO2020106239 A1 WO 2020106239A1
Authority
WO
WIPO (PCT)
Prior art keywords
attachment
link
pins
check valve
hydraulic
Prior art date
Application number
PCT/TR2019/050119
Other languages
French (fr)
Inventor
İsmail AKBIYIK
Original Assignee
Akbiyik Ismail
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to TR201817608 priority Critical
Priority to TR2018/17608 priority
Application filed by Akbiyik Ismail filed Critical Akbiyik Ismail
Publication of WO2020106239A1 publication Critical patent/WO2020106239A1/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3609Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3636Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36Component parts
    • E02F3/3604Devices to connect tools to arms, booms or the like
    • E02F3/3609Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Abstract

The invention is about the device (A) which is specifically designed for practical installation and removal of different work tool attachments (C) such as bucket, hydraulic rock breaker, ripper, hydraulic vibrating ripper, hydraulic shear and forklift fork to construction machines (B) such as excavator, backhoe loader, crane, and telescopic crane.

Description

HYDRAULIC PIN CONNECTION DEVICE FOR PRACTICAL INSTALLATION AND REMOVAL OF DIFFERENT WORK TOOL ATTACHMENTS TO CONSTRUCTION MACHINERY.

TECHNICAL FIELD

The invention is about the device which is specifically designed for practical installation and removal of different work tool attachments such as bucket, hydraulic rock breaker, ripper, hydraulic vibrating ripper, hydraulic shear and forklift fork to construction machines such as excavator, backhoe loader, crane, and telescopic crane.

The invention is particularly about the device which is configured for practical attachment/removal of different work tool attachments such as bucket, hydraulic rock breaker, ripper, hydraulic vibrating ripper, hydraulic shear, forklift fork to construction machines such as excavator, backhoe loader, crane, and telescopic crane.

The device achieves this via this configuration and working principle;

Two hydraulic pin connection devices, which are capable of moving in both ways (inwards and outwards) with hydraulic control valves which are controlled by the operator, are located separately on the bodies that are formed on the lower ends of the arm and H-Link of the construction machine. The device also contains the double pilot operated check valve with twin rod, which provides oil flow to the system via the hydraulic oil canals. The operator first aligns the arm attachment alignment jaws located on the body that is formed on the arm, with the attachment arm connection ear sleeves located on the top of the work tool attachment and establishes the arm connection via commanding the device. With the operator commanding the device again, the hydraulic pins will move outwards, thus establishing the attachment arm connection ear sleeve-arm connection. After that, the operator establishes the H-Link connection and fixes the H- link to the H-link connection ear sleeves of the work tool attachment using the H-link fixing jaw which is located on the top of the attachment cylinder and the H-link rest wedge which is located on the arm of the construction machine. To remove the attachment tool, the operator commands the device and the hydraulic pins will move inwards, and come off from the attachment arm connection ear sleeves of the arm and from the attachment H-link ear sleeve of the H-link. In this way, the removal process is done practically. PREVIOUS TECHNIQUE

At the present day, construction machines such as excavators, backhoe loaders, cranes and telescopic cranes are used for excavation, loading, demolition works, mainly and particularly in construction industry.

As described, different work tool attachments are attached to construction machines such as bucket, hydraulic rock breaker, ripper, hydraulic vibrating ripper, hydraulic shear, and forklift fork so that different works can be accomplished.

In the conventional technique, ear sleeves are fixed on both sides to the top of each work tool attachment so that the installation and removal can be accomplished. The attachment of the excavator arm to the ear sleeves of the working tool is done via using pins that are large in diameter and heavy.

Once the task of the work tool is done, it must be removed from the arm of the construction machine so that another work tool can be attached to the arm of the construction machine. In this case, the operator accomplishes the installation process via the help of another worker. The worker removes the heavy pins that are holding the attachment together and then re-installs them again to the ear sleeves of the work tool in order to attach the tool to the arm of the excavator. As specified, this way of attachment of work tools is very hard and laborious. Considering the costs of the worker and extra fuel consumption combined with continuous wear of the machine, this method causes poor work profit and extra costs.

In a research about the known attachment techniques, patent number US6254331 has been found. When the contents of the relevant patent are examined, it is understood that the configuration of the attachment system consists of a spring-loaded device pushing and grasping the ear sleeve of the bucket. Looking at the disadvantages of this device, the total weight of the metal used for the production of the system, for example for a model that is built for an excavator of 35 tons, is approximately 600 kg. The machine is forced to work continuously with the specified excess weight as long as it uses the device. In this case, due to the weight of the device the fuel consumption will increase, the weight will affect badly the mobility of the arm, and accordingly shorten the life span of pins and bushings on the connection points and will increase the risk of cracking the arm and boom body of the machinery.

Since the work tool attachment is installed on the arm of the construction machine, it extends the arm's length by approximately 40 cm, thus reducing the plucking power of the construction machine. In addition, when the work machine is working with a heavy attachment, such as a hydraulic rock breaker, the device body can withstand this weight for up to two or three years, and this eventually results to deformation and causes fractures and cracks to form on the body of the device. Although repairs can be done, material fatigue occurs in the metal used for the manufacture of the device. Thus, any repair attempts will eventually end up with fails.

In another research about the conventional techniques, patent application number US6481124 was found. When the content of the relevant patent is examined, it is found out that the device consists of a hydraulic system which works by pushing the hydraulic piston to grasp the bucket's pin. Although it is a bit more technologically advanced compared to the previous device described, this system has all the drawbacks of the previous patent number US6254331.

There are different patents all about the conventional techniques, as stated above. However, they all are very similar in design, thus carrying all the disadvantages specified above.

As a result, it is clearly necessary to develop the relevant technical field due to the above- mentioned negativity of the technique in its known state.

THE PURPOSE OF THE INVENTION

Because of the negativity that exists in the previous technique, the invention aims to solve all the negativity described.

The purpose of the invention is to design and form the hydraulic pin connection device in order to ensure that different work tool attachment, such as bucket, hydraulic rock breaker, ripper, hydraulic vibrating ripper, hydraulic shear, forklift fork, can be attached to different working machines such as excavator, backhoe loader, crane, and telescopic crane.

Another purpose of the invention is to design and form the hydraulic pin device which achieves easy and practical installation and removal of the work tool attachment to the construction machine, via the following configuration and working principle;

Two hydraulic pin connection devices, which are capable of moving in both ways (inwards and outwards) with hydraulic control valves which are controlled by the operator, are located separately on the bodies that are formed on the lower ends of the arm and H-Link of the construction machine. The device also contains the double pilot operated check valve with twin rod, which provides oil flow to the system via the hydraulic oil canals. The operator first aligns the arm attachment alignment jaws located on the body that is formed on the arm, with the attachment arm connection ear sleeves located on the top of the work tool attachment and establishes the arm connection via commanding the device. With the operator commanding the device again, the hydraulic pins will move outwards, thus establishing the attachment arm connection ear sleeve-arm connection. After that, the operator establishes the H-Link connection and fixes the H- link to the H-link connection ear sleeves of the work tool attachment using the H-link fixing jaw which is located on the top of the attachment cylinder and the H-link rest wedge which is located on the arm of the construction machine. To remove the attachment tool, the operator commands the device and the hydraulic pins will move inwards, and come off from the attachment arm connection ear sleeves of the arm and from the attachment H-link ear sleeve of the H-link. In this way, the removal process is done practically.

Another purpose of the invention is to achieve the embedment and installation of the hydraulic pin connection device to the bodies that are formed on the lower sides of the arm and H-link of the working machine without a requirement of change in the dimension and measurements of the arm and H-link of the construction machine and as for the weight of the device, the aim is to reduce the weight of the device designed by up to % 55. (For example, 270 kg weight for an excavator of 35 tons) Since there is no change in the length dimensions of the arm and H-link of the machine, and because there is not a lot of extra weight is carried by the arm, a remarkable increase occurs in the plucking power of the construction machine, mobility of the arm and fuel consumption of the engine.

Another purpose of the invention is to ensure the security of the system and that the hydraulic pin connection device is secured by the lock valve. This way, the operator is spared from the hassle of installing/removing the work tool attachment and removing the safety pin, which is a heavy part like it is in other inventions, and the safety valve will keep the pins locked in the forward position, preventing possible accidents.

Another purpose of the invention is to enable the operator to intervene in a short period of time with the corresponding deformation of the hydraulic pin connection device, which cannot fulfill its task due to the parts that have been deformed in the system and a replacement of parts is required. In this way, since the work machine can be activated in a short time, the labor force and the costs related to it are eliminated. BRIEF DESCRIPTION OF THE FIGURES

Figure- 1; Representative detailed perspective view of the construction machine equipped with the described hydraulic pin connection device and work tool attached (Bucket), in a different angle,

Figure-2; Representative detailed perspective view of the construction machine equipped with the described hydraulic pin connection device and work tool removed (Bucket), in a different angle,

Figure-3; Representative sectional view of the described hydraulic pin connection device with the pins in forward position, (The working tool attachment (Bucket) is installed on the H-link)

Figure-4; Representative sectional view of the described hydraulic pin connection device with the pins in backward position, (The pins are removed from the work tool attachment)

Figure-5; Representative sectional view of the check valve assembled on the double pilot operated check valve with twin rod located on the hydraulic pin connection device,

Figure-6; Representative sectional view of the assembled state of the double pilot operated check valve with twin rod, guide cylinder and cylindrical body, located in the hydraulic pin connection device,

Figure-7; Representative perspective view of the disassembled state of the double pilot operated check valve with twin rod from a different angle, which is located in the described hydraulic pin connection device,

Figure-8; Representative perspective view of the described hydraulic pin connection device without its body and in the disassembled state,

Figure-9; Representative sectional view of the attachment alignment jaw of the hydraulic pin connection device, which is located on the arm,

Figure- 10; Representative sectional view of the attachment alignment jaw of the hydraulic pin connection device, which is located on the H-link,

Figure-11; Representative sectional view of the attachment (bucket) and ear sleeve, bushing, ear plate, and grease nipple located on the attachment (bucket), Figure- 12; Representative sectional and perspective view of the fixing jaw which is located on the attachment cylinder,

Figure- 13; Transparent perspective view of the double pilot operated check valve with twin rod and the oil canals located in the hydraulic pin connection device,

Figure- 14; Representative perspective view of the body of the hydraulic pin connection device from different angles, which is formed on the end of the arm,

Figure- 15; Representative perspective view of the body of the hydraulic pin connection device from different angles which is formed on the end of the H-link,

Figure- 16; Representative perspective view of the guide cylinders located in the hydraulic pin connection device from different angles,

Figure- 17; Representative perspective view of the cylindrical body located in the hydraulic pin connection device from different angles,

Figure- 18; Representative perspective view of the dust seal located in the hydraulic pin connection device from different angles.

REFERENCE NUMBERS

A. Connection Device

B. Construction Machine

Bl.Boom

B2. Arm

B2.1 Body

B3. H-Fink

B3.1. Body

C. Attachment

Cl.a. Attachment Arm Connection Ear Sleeve

Cl.b. Attachment H-Fink Connection Ear Sleeve

C2. Attachment Ear Plate C3. Attachment Bushing

C4. Grease Nipple

1. Double Pilot Operated Check Valve With Twin Rod

2. Right Pin

3. Left Pin

4. Right Guide Cylinder

5. Left Guide Cylinder

6. Cylindrical Body

7. Pin Cap

8. Piston

9. Locking Shaft

10. Pin Support Part

11. Pin Support Part Ring

12. Small Dust Seal

13. Big Dust Seal

14. Guide Cylinder Dust Gasket

15. Guide Cylinder Locking Shaft

16. Union Fitting

17. Copper Washer

18. Hydraulic Manifold

19.0-Ring

20. Allen Screw

21. Check Valve Blanking Bolt

22. Copper Washer

23. Double Pilot Operated Check Valve Body

24. Copper Washer

25.0-Ring

26. Poppet Valve

27. Spring

28. Spring Fixing Nut

29. Oil Canal

30. Oil Canal

31. Pilot Piston

32.0-Ring

33. Piston Seal 34. Piston Gasket

35. Piston Locking Bolt

36.0-Ring

37.0-Ring

38. Rod Seal

39. Rod Wiper

40. Grease Nipple

41. Pin Cap Fixing Bolt

42. Locking Shaft Fixing Nut

43. Ring

44. Pin Destination and Fixing Device

45. Pin Destination and Fixing Device Canal

46. Grease Oil Hole

47. Grease Oil Canal

48. Union Fitting Space

49. Cylindrical Body Locking Shaft Canal

50. Guide Roller Locking Shaft Canal

51. Arm Attachment Alignment Jaw

52.H-Link Attachment Alignment Jaw

53.H-Link Fixing Jaw

54. H-Link Rest Wedge

55. Attachment Cylinder

56. Side Link, Dog Bone

57. Connection Shaft

58. Connection Shaft

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description of the invention and in the technical drawings supporting the description , the attachment of the H-Link (B3) and arm (B2) to a bucket type work tool attachment (C3) via the mentioned hydraulic pin connection device (A) is represented. The attachment of different work tool attachments (C) such as bucket, vibrating ripper, ripper, hydraulic rock breaker, hydraulic shear and forklift fork to construction machines (B) such as excavator, backhoe loader, crane and telescopic crane via hydraulic pin connection device (A) can be achieved practically and easily. Therefore, the use of the hydraulic pin connection device (A) should not be limited to those specified in the detailed description and the figures. In figure 1, there is a representative perspective and detailed view of the work tool attachment (C) attached to the construction machine (B) via the hydraulic pin connection device (A).

The construction machine (B) consists of boom (Bl), arm (B2), H-link (B3), attachment(C), H-link fixing jaw (53), H-link fixing rest (54), attachment cylinder(55) and side link, dog bones (56), connection shafts(57), (58) and hydraulic pin connection device(A).

As can be seen in figures 7, 8 and 17 the hydraulic connection device(A) which is specifically designed for practical installation and removal of work tool attachments (C) to construction machine(B) consists of;

-The double pilot operated check valve with twin rod (1), which enables to mount and dismount the hydraulic pin connection device (A) to the work tool attachment(C),

-The left(3) and right(2) pins which are installed on the right and left sides of the double operated check valve with twin rod (1), enabling the installation and removal of the hydraulic pin connection device(A) to the work tool attachment(C),

-The right (4) and left (5) guide cylinders which are installed on left and right sides of the double operated check valve with twin rod (1) , guiding and preventing the left (3) and right (2) pins from rotating right or left while the construction machine (B) is working with the work tool attachment (C),

-The cylindrical body (6) in which the hydraulic pin connection device (A) is assembled,

-The pin cap (7) which prevents the hydraulic oil leakage, which also allows the right pin and left pin (2) (3) to be interlinked to the double pilot operated check valve with twin rod (1) and serves as a bearing for the pins,

- The piston (8) which is located in the inner parts of the right pin and the left pins (2) (3), where both are assembled on the double operated check valve with twin rod (1). This piston (8) is in charge of preventing the hydraulic oil leakage, ensuring high pressure formation and moving the right (2) and left (3) pins forward and backward through hydraulic oil pressure over the double pilot operated check valve with twin rod(l).

- The locking shaft (9) which is in charge of securing the right and left guide cylinders (4) (5) and the double pilot operated check valve with twin rod (1), and preventing them from coming out of the cylindrical body (6) because of the pressure and force that forms during the operation of the construction machine (B). - The pin support part (10), which supports the right and the left pins (2) (3) and serves as a bearing for these parts during the operation of the construction machine (B) , while the arm (B2) and the H-link (B3) is connected with the work tool attachment (C),

- The pin support ring (11), which enables the connection and secures the pin support part (10) to the arm (B2) and H-link (B3) bodies.

- The small dust seal (12) that prevents dust, soil and rock particles from entering the attachment arm connection ear sleeve ear (Cl. a), the attachment H-Link connection ear sleeve(Cl.b), the right and left pins(2) (3) and the bodies(B2.1) (B3.1) during the operation of the construction machine,

-The big dust seal (13) that prevents dust, soil and rock particles from entering the attachment arm connection ear sleeve ear (Cl. a), the attachment H-Link connection ear sleeve(Cl.b), the right and left pins(2) (3) and the bodies(B2.1) (B3.1) during the operation of the construction machine,

-The guide cylinder dust gasket (14) that prevents dust, soil and rock particles during the operation of the construction machine (B) , from entering the inner side from between the right and left pins (2) (3) and the right and left guide cylinders (4) (5), where the double pilot operated check valve with twin rod (1) is located,

-Two separate locking shafts that fix and prevent the right and the left guide cylinders from moving in and out in the cylindrical body, because of the force and pressure forms during the operation of the construction machine.

-Two separate union fittings(16) that are installed on the double pilot operated check valve with twin rod (1) and provide hydraulic oil flow,

-The copper washer(17 )that provides leak tightness between the two union fittings (16) that provide oil flow and are installed on the double pilot operated valve with twin rod (1),

-The hydraulic manifold (18) which enables the installation of the union fitting (16) on to the double pilot operated check valve with twin rod (1).

- The O-Ring (19) that prevents any oil leakage between the union fitting (16) and the double pilot operated check valve with twin rod (1) during the oil flow between them.

- The alien screw (20) which enables the hydraulic manifold (18) to be installed on the double pilot operated check valve with twin rod (1), - The check valve blanking bolt(21) which is installed on the double pilot operated check valve with twin rod (1) and prevents any hydraulic oil leakage,

- The copper washer (22) which is installed together with the check valve blanking bolt (21) on to the double pilot operated check valve with twin rod (1) in order to prevent any hydraulic oil leakage,

-Double pilot operated check valve body (23) where the copper washer (22) and the check valve blanking bolt (21) are installed on,

- The copper washer (24) which is installed together with the double pilot operated check valve body (23) in order to prevent any oil leakage,

-The O-Ring (25) which is installed together with the double pilot operated check valve body (23) in order to prevent any oil leakage,

- The poppet valve (26) which is installed on the hydraulic oil entrance of the double pilot operated check valve body (23), opens up with the pressure of the hydraulic oil and automatically closes back when the oil pressure is cut, enabling the right and the left pins (2) (3) stay where they are via stopping the hydraulic oil flow,

-The spring (27) which is fixed on the back of the poppet valve (26) enabling it to close back automatically,

-The spring fixing nut (28) which enables the spring (27) to stay fixed in the position it is on the double pilot operated check valve body (23) ,

- The oil canal (29) which operates as the oil flow return line while the right and the left pins (2) (3) move to forward position and the construction machine (B) is in the attachment phase with the work tool attachment (C). The same oil canal also operates as the oil pressure line when the right and the left pins (2) (3) move to backward position, (removing the work tool (C) and the construction machine (B) connection)

- The oil canal (30) which operates as the oil pressure line while the right and the left pins move to forward position and the construction machine is in the attachment phase with the work tool attachment. The same oil canal also operates as the oil return line when the right and the left pins move to backward position, (uninstalling the work tool and the construction machine connection)

-The pilot piston (31) which is installed on the double pilot operated check valve with twin rod (1) and is in charge of applying oil pressure to the poppet valve (26) which is in charge of automatically opening when it is under oil pressure and directing the oil pressure to the right and left pins (2) (3) in order to move them backward or forward position,

- The O-Ring (32) which is installed on the pilot piston (31), preventing any hydraulic oil leakage,

-The piston seal (33) which is installed on the piston (8), eliminates the friction and any damage caused by the friction between right and left pins and the double pilot operated check valve.

-The piston gasket (34) which is installed on the piston (8), and is in charge of preventing any hydraulic oil leakage and ensuring the high pressure to form,

-The piston locking bolt (35), which is in charge of preventing the piston (8) from coming out of its bearing, and is installed on the double pilot operated check valve with twin rod (1), acting as a security pin,

-The O-Ring (36) which is installed between the piston (8) and the double pilot operated check valve with twin rod (1), and is in charge of preventing any oil leakage,

-The O-Ring (37) which is installed between the right and the left pins (2) (3) and the pin cap (7) and is in in charge of preventing any hydraulic oil leakage,

-The rod seal (38) which is installed on the pin cap (7) and is in charge of preventing the friction between the right and the left pins (2) (3) and the double pilot operated check valve with twin rod (1) and acts as a bearing for the pins,

- The rod wiper (39) which is installed on the pin cap (7) and is in charge of preventing the oil leakage and ensuring the high pressure to form during the movement of the right and the left pins (2) (3),

-The grease nipple (40), which is installed on the cylindrical body (6) and enables the grease oil to fill within the system, lubricating and preventing any friction and wear between the right and the left guide cylinders (4) (5) and the right and the left pins (2) (3) during the movement of the right and the left pins (2) (3),

- The pin cap fixing bolt (41), which acts as a security pin and secures the pin cap to the right and the left pins (2) (3) and prevents it from coming loose,

- Locking shaft fixing nut (42), which fixes and secures the locking shaft (9) where the locking shaft is in charge of fixing and locking the right and the left guide cylinders (4) (5) and the double pilot operated check valve with twin rod (1) and prevents them from coming loose from the cylindrical body (6) and also prevents them from moving in the cylindrical body (6).

-The ring (43) which secures and prevents the locking shaft fixing nut (42) from coming loose,

-The pin destination and fixing device (44) which guides and prevents the right and the left pins (2) (3) installed in the right and the left guide cylinders (4) (5), from rotating while they are moving during the operation of the construction machine (B),

-The pin destination and fixing device canal, (45) which guides and prevents the right and the left pins (2) (3) installed in the right and the left guide cylinders (4) (5), from rotating while they are moving during the operation of the construction machine (B),

- The grease oil hole (47), which is in charge of allowing the oil passage and lubricating the hydraulic pin connection device (A) through the cylindrical body (6), grease nipple (40) and the right and the left guide cylinders (4) (5) located on the cylindrical body (6),

-The union fitting space (48), which is located on the cylindrical body (6) and allows the union fitting (16) and the hydraulic manifold (18) to be installed and removed during the removal and installation of the double pilot operated check valve with twin rod (1) and the right and the left pins (2) (3) to the H-link (B3) and the arm (B2),

-The cylindrical body locking shaft canal (49), which is located on the cylindrical body (6) and serves as a bearing for the locking shaft (15),

-The arm attachment alignment jaw (51) which as can be seen in the figure 9, allows the arm (B2) to grasp the attachment arm connection ear sleeve (Cl. a) and aligns the attachment arm connection ear sleeve thus enabling he the right and the left pins (2) (3) easily pass through the attachment bushes (C3) located on the center of the attachment arm connection ear sleeve (Cl. a), in order to achieve a practical installation/removal of work tool attachment (C) to the construction machine,

- The H-link attachment alignment jaw (52) which as can be seen in the figure 10, allows the H-link (B3) to grasp the attachment H-link connection ear sleeve (Cl.b) and aligns the attachment arm connection ear sleeve thus enabling he the right and the left pins (2) (3) easily pass through the attachment bushes (C3) located on the center of the attachment H-link connection ear sleeve (Cl.b), in order to achieve a practical installation/removal of work tool attachment (C) to the construction machine, -The H-link fixing jaw (53) which as can be seen in the figure 11, fixes the H-link (B3) while it is connecting with the work tool attachment (C) in order to allow the H-link (B3) to grasp the attachment H-link connection ear sleeve (Cl.b) and to align it,

- The H-Link rest wedge (54) which as can be seen in the figure 11, is located on the arm (B2)and fixes the H-link (B3) while it is connecting with the work tool attachment (C) in order to allow the H-link (B3) to grasp the attachment H-link connection ear sleeve (Cl.b) and to align it,

-The attachment cylinder (55) which is installed on the arm (B2) and moves the work tool attachment (C),

-The side link, dog bones (56) which one of its tips is assembled on the point where the H-link (B3) and the attachment cylinder (55) is connected, and the other tip is assembled on the sides of the arm (B2) and allows to maintain the route and the angle of the attachment cylinder (55) and the H-link (B3) while the work tool attachment (C) is moving,

-The connection shaft (57) which maintains the connections of the side link (56), H-link (B3) and the attachment cylinder (55),

-The connection shaft (58) which maintains the linkage of the side link (56) and the arm (B2),

-As can be seen in the figures 14, 15, 9 and 10, the body (B2.1) (B3.1) of the hydraulic pin connection device (A) which is located both on the end of the arm (B2) and the H- link (B3), is formed during the production phase of the construction machine (B). This process is done without changing the length dimensions of the arm (B2) and the H-link (B3) and in order to achieve this; the following units are formed:

The H-link attachment alignment jaw (52) which is installed on the H-link body (B3.1) and is in charge of grasping and aligning the attachment H-link connection ear sleeve (Cl.b), and the arm attachment alignment jaw (51) which is installed on the arm (B2) and the H-link (B3.1) and is in charge of grasping and aligning the attachment arm connection ear sleeve (Cl. a).

As can be seen in the figure 11, the attachment ear sleeves (Cl. a) (Cl.b) which are located on the top of the work tool attachment (C) are installed via the attachment ear plate (C2). The attachment arm connection ear sleeve (Cl. a) and the attachment H-link connection ear sleeve (Cl.b) are located on the attachment ear plate (C2). The grease nipple (C4) which transfers the lubricant and lubricates the friction resistant attachment bushing (C3) that is in charge of lubricating the outer surfaces of the right and the left pins that are assembled on the centers of the attachment arm connection ear sleeve (Cl. a) and the attachment H-link connection ear sleeve (Cl.b).

During the assembly process of the described hydraulic pin connection device (A) the cylindrical body (6) is assembled on the lower ends of the bodies (B2.1) (B3.1) that are formed on the arm (B2) and the H-link (B3), and the left and the right guide cylinders (4) (5) are fixed in the cylindrical body (6) via the big and the small dust seals (12) (13) , the guide cylinder dust gaskets (14) an the locking shafts (9) where the right and left guide cylinders (4) (5) operate as a bearing and guide the right and the left pins (2) (3).

Before the assembly of the double pilot operated check valve with twin rod (1) to the right and the left guide cylinders (4) (5), first its own installation is made as the following; the pilot piston (31) and the O-ring (32) are installed on the middle of the check valve (1) body. After that, two pieces from each of the check valve blanking bolt (21), copper washer (22) double operated check valve body (23), copper washer (24), O- ring (25), poppet valve (26), spring (27) and the spring fixing nut (28) are assembled. In the following process, two pieces from each of the pin cap (7), O-ring (37), rod seal (38) and rod wiper (39) are assembled in from each of the opposite ends of the double pilot operated check valve with twin rod (1). O ring (39), piston (8) seal (33), piston gasket (34) and the piston locking bolt (35) are assembled on to the opposite ends of the double pilot operated check valve with twin rod (1) body.

Afterwards, the double pilot operated check valve with twin rod (1) is assembled in to middle point inside of the right and the left guide cylinders (4) (5). The union fitting, copper washer (17), hydraulic manifold (18), O-ring (19) and the alien screw are assembled to the connection point located on the check valve (1). After that, the right and the left pins (2) (3) are passed through from the opposite ends of the double pilot operated check valve (1) and assembled with the pin cap (7) and secured with the pin cap fixing nut (41).

The double pilot operated check valve with twin rod (1) locking shaft (9) which is assembled in the right and the left guide cylinders (4) (5), is inserted from the entrance point located on the cylindrical body (6) and is assembled to its bearing which is located on the pre-installed right and the left guide cylinders (4) (5) and the double pilot operated check vale with twin rod (1) via the locking shaft fixing nut (42) and the ring (43). After that, the grease nipples (40) are assembled to their beddings that are located on the outer surface of the cylindrical body (6). Afterwards, the dust gasket (13) is assembled on the pin support part (10) and secured with the pin support part ring (11).

Lastly, the installation of the described hydraulic pin connection device (A) is accomplished after one end of the H-link (B3), the attachment cylinder (55) and the side link (56) are linked via the connection shaft (57).

As can be seen in figure 2, in the installation of the work tool attachment (C) to the construction machine (B) via the described hydraulic pin connection device (A), firstly with the operator controlling the construction machine (B) the boom (Bl), arm (B2), and the H-link (B3) are moved and the arm attachment alignment jaw (51) which is located on the body (B2.1) that is formed on the arm (B2), is linked with the arm attachment connection ear sleeve (Cl. a) which is located on the work tool attachment (C). This way, the body (B2.1) on the arm (B2) and the attachment arm connection ear sleeve (Cl. a) connection distances and linings are adjusted.

While the body connection distances and linings of the body (B2.1) formed on the arm (B2) and the attachment arm connection ear sleeve (Cl. a) are adjusted, with the operator commanding the construction machine;

The pressurized oil flow coming from the construction machine (B) to the hydraulic pin connection device (A) passes from inside of the union fitting (16) and the hydraulic manifold (18) located on the double pilot operated check valve with twin rod (1) and is compressed between the double pilot operated check valve body (23) and pilot piston (31) and moves the pilot piston (31) with the pressure it forms, thus applies force to the poppet valve (26) via the pressure of the spring (27) located in the check valve body (23) . From there, the hydraulic oil flow allows the other oils in passive condition located in other oil canals (29) to return to the construction machine (B) via the oil canal (30) while moving the right and the left pins (2) (3) forward. During this process, the right and the left pins (2) (3) pass through the bushings (C3) located on the work tool attachment (C) and reach and rest to the pin support part (10). While the operator commands the construction machine (B), he cuts off the hydraulic oil flow thus, the pilot piston (31) cuts off the pressure it applies to the poppet valve (26). This causes the poppet valve (26) to apply pressure back to the check valve body (23) and to cut off the oil flow in the oil canals by force and locks (29) (30). This way, the poppet valve enables the right and the left pins (2) (3) to lock and stay safely in their positions. In this way, the connection process of the body (B2.1) on the arm (B2) and the attachment arm connection ear sleeve (Cl. a) is completed. Afterwards, with the operator commanding the construction machine, (B) the boom (Bl), arm (B2) and the H-link (B3) are moved together and the boom (Bl) is lifted up from the ground approximately about 1 (one) meter enabling the attachment (C) to lift up from the ground. Next, the H-link (B3) is taken to the maximum reverse position, thus enabling the H-link (B3) to get into the fixed position via the H-link fixing jaw (53) and the H-link rest wedge, bringing the arm (B2) to closed position, thus enabling the attachment (C) to automatically approach to the H-link via the effect of the gravity. Afterwards, the attachment H-link connection ear sleeve (Cl.b) which is located on the attachment (C) is linked to the H-link attachment alignment jaw (52) which is located on the body (B3.1) formed on the H-link (B3). In this way, the connection distance and the lining between the body (B3.1) formed on the H-link (B3) and the attachment H-link connection ear sleeve (Cl.b) are adjusted.

While the connection distance and the linings between the body (B3.1) formed on the H- link (B3) and the attachment H-link connection ear sleeve (Cl.b) are adjusted, with the operator commanding the construction machine;

The pressurized oil flow coming from the construction machine (B) to the hydraulic pin connection device (A) passes from inside of the union fitting and the hydraulic manifold located on the double pilot operated check valve with twin rod (1) and is compressed between the check valve body (23) and pilot piston (31) and moves the pilot piston (31) with the pressure it forms, thus applies force to the poppet valve (26) via the pressure of the spring (27) located in the check valve body (23) . From there, the hydraulic oil allows the other oils in passive condition located in other oil canals (29) to return to the construction machine (B) via the oil canal (30) while moving the right and the left pins (2) (3) forward. During this process, the right and the left pins (2) (3) pass through the bushings (C3) located on the work tool attachment (C) and reach and rest to the pin support part (10). While the operator commands the construction machine (B), he cuts off the hydraulic oil flow thus, the pilot piston (31) cuts off the pressure it applies to the poppet valve (26). This causes the poppet valve (26) to apply pressure back to the check valve body (23) and to cut off the oil flow in the oil canals by force and locks (29) (30). This way, the poppet valve enables the right and the left pins (2) (3) to lock and stay safely in their positions. In this way, the connection process between the body (B3.1) formed on the H-link (B3) and the attachment H-link connection ear sleeve (Cl.b) is completed. When another use of work tool attachment (C) is needed after the work is done, with the operator commanding the construction machine;

The pressurized oil flow coming from the construction machine (B) to the hydraulic pin connection device (A) passes from inside of the union fitting (16) and the hydraulic manifold (18) located on the double pilot operated check valve with twin rod (1) and is compressed between the check valve body (23) and pilot piston (31) and moves the pilot piston (31) with the pressure it forms, thus applies force to the poppet valve (26) via the pressure of the spring (27) located in the check valve body (23) . From there, the hydraulic oil allows the other oils in passive condition located in other oil canals (30) to return to the construction machine (B) via the oil canal (29) , while moving the right and the left pins (2) (3) backward. During this process, the right and the left pins (2) (3) pull off and exit from the bushings (C3) and from the pin support part (10) located on the work tool attachment (C). Thus, the installation between the body (B2.1) located on the arm (B2), the body (B3.1) located on the H-link (B3) and the attachment arm connection sleeve (Cl. a) and the attachment H-link connection ear sleeve (Cl.b) is removed. While the operator commands the construction machine (B), he cuts off the hydraulic oil flow thus, the pilot piston (31) cuts off the pressure it applies to the poppet valve (26). This causes the poppet valve (26) to apply pressure back to the check valve body (23) and to cut off and lock the oil flow in the oil canals(29) (30) by force. This way, the poppet valve enables the right and the left pins (2) (3) to lock and stay safely in their positions.

As stated above, the attachment of a different work tool attachment (C) to the construction machine (B) can be done effortlessly.

Claims

1. The invention is about the device which is designed and configured for practical installation and removal of different work tool attachments (C) such as bucket, hydraulic rock breaker, ripper, hydraulic vibrating ripper, hydraulic shear and forklift fork to construction machines (B) such as excavator, backhoe loader, crane, and telescopic crane, which its specification is;
The characterization of the hydraulic pin connection device (A) which achieves the installation/removal process via this configuration and working principle; Two hydraulic pin connection devices (A), which are capable of moving in both ways (inwards and outwards) with hydraulic control valves which are controlled by the operator, are located separately on the bodies (B2.1) (B3.1) that are formed on the lower ends of the arm (B2) and H-Link (B3) of the construction machine (B), the device (A) also contains the double pilot operated check valve with twin rod (1), which provides oil flow to the system via the hydraulic oil canals (29) (30), to attach the attachment (C) the operator first aligns the arm attachment alignment jaws (51) located on the body (B2.1) that is formed on the arm (B2), with the attachment arm connection ear sleeves (Cl. a) located on the top of the work tool attachment (C) and establishes the arm (B2) connection via commanding the device (A), with the operator commanding the device (A) again, the hydraulic pins (2) (3) will move outwards, thus establishing the attachment arm connection ear sleeve (Cl.a)-arm (B2) connection, after that, the operator establishes the H-Link (B3) connection and fixes the H-link (B3) to the H-link connection ear sleeves (Cl.b) of the work tool attachment (C) using the H-link fixing jaw (53) which is located on the top of the attachment cylinder (55) and the H-link rest wedge which is located on the arm (B2) of the construction machine (B), to remove the attachment tool (C) the operator commands the device (A) and the hydraulic pins (2) (3) will move inwards, and come off from the attachment arm connection ear sleeves (Cl. a) of the arm (B2) and from the attachment H-link ear sleeve (Cl.b) of the H-link (B3), enabling the removal process to be done practically.
2. The hydraulic pin connection device (A) of claim 1 comprising;
-The bodies (B2.1) (B3.1) that are formed both on the arm (B2) and the H-link (B3)
-The double pilot operated check valve with twin rod (1), which enables to mount and dismount the hydraulic pin connection device (A) to the work tool attachment(C), -The left(3) and right(2) pins which are installed on the right and left sides of the double operated check valve, enabling the installation and removal of the hydraulic pin connection device(A) to the work tool attachment(C),
-The right (4) and left (5) guide cylinders which are installed on left and right sides of the double operated check valve (1) , guiding and preventing the left (3) and right (2) pins from rotating right or left while the construction machine is working with the work tool attachment,
-The cylindrical body (6) in which the hydraulic pin connection device (1) is assembled,
-The pin cap (7) which prevents the hydraulic oil leakage, which also allows the right pin and left pin (2) (3) to be interlinked to the double pilot operated check valve with twin rod (1) and serves as a bearing for the pins,
- The piston (8) which is located in the inner parts of the right pin and the left pins (2) (3), where both are assembled on the double operated check valve with twin rod (1). This piston (8) is in charge of preventing the hydraulic oil leakage, ensuring high pressure formation and moving the right (2) and left (3) pins forward and backward through hydraulic oil pressure over the double pilot operated check valve with twin rod(l).
- The locking shaft (9) which is in charge of securing the right and left guide cylinders (4) (5) and the double pilot operated check valve with twin rod (1), and preventing them from coming out of the cylindrical body (6) because of the pressure and force that forms during the operation of the construction machine (B).
- The pin support part (10), which supports the right and the left pins (2) (3) and serves as a bearing for these parts during the operation of the construction machine (B) , while the arm (B2) and the H-link (B3) is connected with the work tool attachment (C),
- The pin support ring (11), which enables the connection and secures the pin support part (10) to the arm (B2) and H-link (B3) bodies.
- The small dust seal (12) that prevents dust, soil and rock particles from entering the attachment arm connection ear sleeve ear (Cl. a), the attachment H-Link connection ear sleeve(Cl.b), the right and left pins(2) (3) and the bodies(B2.1) (B3.1) during the operation of the construction machine,
-The big dust seal (13) that prevents dust, soil and rock particles from entering the attachment arm connection ear sleeve ear (Cl. a), the attachment H-Link connection ear sleeve(Cl.b), the right and left pins(2) (3) and the bodies(B2.1) (B3.1) during the operation of the construction machine, -The guide cylinder dust gasket (14) that prevents dust, soil and rock particles during the operation of the construction machine (B) , from entering the inner side from between the right and left pins (2) (3) and the right and left guide cylinders (4) (5), where the double pilot operated check valve with twin rod (1) is located,
-Two separate locking shafts that fix and prevent the right and the left guide cylinders from moving in and out in the cylindrical body, because of the force and pressure forms during the operation of the construction machine.
-Two separate union fittings(16) that are installed on the double pilot operated check valve with twin rod (1) and provide hydraulic oil flow,
-The copper washer(17 )that provides leak tightness between the two union fittings (16) that provide oil flow and are installed on the double pilot operated valve with twin rod (1),
-The hydraulic manifold (18) which enables the installation of the union fitting (16) on to the double pilot operated check valve with twin rod (1).
- The O-Ring (19) that prevents any oil leakage between the union fitting (16) and the double pilot operated check valve with twin rod (1) during the oil flow between them.
- The alien screw (20) which enables the hydraulic manifold (18) to be installed on the double pilot operated check valve with twin rod (1),
- The check valve blanking bolt(21) which is installed on the double pilot operated check valve with twin rod (1) and prevents any hydraulic oil leakage,
- The copper washer (22) which is installed together with the check valve blanking bolt (21) on to the double pilot operated check valve with twin rod (1) in order to prevent any hydraulic oil leakage,
-Double pilot operated check valve body (23) where the copper washer (22) and the check valve blanking bolt (21) are installed on,
- The copper washer (24) which is installed together with the double pilot operated check valve body (23) in order to prevent any oil leakage,
-The O-Ring (25) which is installed together with the double pilot operated check valve body (23) in order to prevent any oil leakage,
- The poppet valve (26) which is installed on the hydraulic oil entrance of the double pilot operated check valve body (23), opens up with the pressure of the hydraulic oil and automatically closes back when the oil pressure is cut, enabling the right and the left pins (2) (3) stay where they are via stopping the hydraulic oil flow, -The spring (27) which is fixed on the back of the poppet valve (26) enabling it to close back automatically,
-The spring fixing nut (28) which enables the spring (27) to stay fixed in the position it is on the double pilot operated check valve body (23) ,
- The oil canal (29) which operates as the oil flow return line while the right and the left pins (2) (3) move to forward position and the construction machine (B) is in the attachment phase with the work tool attachment (C). The same oil canal also operates as the oil pressure line when the right and the left pins (2) (3) move to backward position, (removing the work tool (C) and the construction machine (B) connection)
- The oil canal (30) which operates as the oil pressure line while the right and the left pins move to forward position and the construction machine is in the attachment phase with the work tool attachment. The same oil canal also operates as the oil return line when the right and the left pins move to backward position, (uninstalling the work tool and the construction machine connection)
-The pilot piston (31) which is installed on the double pilot operated check valve with twin rod (1) and is in charge of applying oil pressure to the poppet valve (26) which is in charge of automatically opening when it is under oil pressure and directing the oil pressure to the right and left pins (2) (3) in order to move them backward or forward position,
- The O-Ring (32) which is installed on the pilot piston (31), preventing any hydraulic oil leakage,
-The piston seal (33) which is installed on the piston (8), eliminates the friction and any damage caused by the friction between right and left pins and the double pilot operated check valve.
-The piston gasket (34) which is installed on the piston (8), and is in charge of preventing any hydraulic oil leakage and ensuring the high pressure to form, -The piston locking bolt (35), which is in charge of preventing the piston (8) from coming out of its bearing, and is installed on the double pilot operated check valve with twin rod (1), acting as a security pin,
-The O-Ring (36) which is installed between the piston (8) and the double pilot operated check valve with twin rod (1), and is in charge of preventing any oil leakage,
-The O-Ring (37) which is installed between the right and the left pins (2) (3) and the pin cap (7) and is in in charge of preventing any hydraulic oil leakage, -The rod seal (38) which is installed on the pin cap (7) and is in charge of preventing the friction between the right and the left pins (2) (3) and the double pilot operated check valve with twin rod (1) and acts as a bearing for the pins,
- The rod wiper (39) which is installed on the pin cap (7) and is in charge of preventing the oil leakage and ensuring the high pressure to form during the movement of the right and the left pins (2) (3),
-The grease nipple (40), which is installed on the cylindrical body (6) and enables the grease oil to fill within the system, lubricating and preventing any friction and wear between the right and the left guide cylinders (4) (5) and the right and the left pins (2) (3) during the movement of the right and the left pins (2) (3),
- The pin cap fixing bolt (41), which acts as a security pin and secures the pin cap to the right and the left pins (2) (3) and prevents it from coming loose,
- Locking shaft fixing nut (42), which fixes and secures the locking shaft (9) where the locking shaft is in charge of fixing and locking the right and the left guide cylinders (4) (5) and the double pilot operated check valve with twin rod (1) and prevents them from coming loose from the cylindrical body (6) and also prevents them from moving in the cylindrical body (6).
-The ring (43) which secures and prevents the locking shaft fixing nut (42) from coming loose,
-The pin destination and fixing device (44) which guides and prevents the right and the left pins (2) (3) installed in the right and the left guide cylinders (4) (5), from rotating while they are moving during the operation of the construction machine (B),
-The pin destination and fixing device canal, (45) which guides and prevents the right and the left pins (2) (3) installed in the right and the left guide cylinders (4) (5), from rotating while they are moving during the operation of the construction machine (B),
- The grease oil hole (47), which is in charge of allowing the oil passage and lubricating the hydraulic pin connection device (A) through the cylindrical body (6), grease nipple (40) and the right and the left guide cylinders (4) (5) located on the cylindrical body (6),
-The union fitting space (48), which is located on the cylindrical body (6) and allows the union fitting (16) and the hydraulic manifold (18) to be installed and removed during the removal and installation of the double pilot operated check valve with twin rod (1) and the right and the left pins (2) (3) to the H- link (B3) and the arm (B2), -The cylindrical body locking shaft canal (49), which is located on the cylindrical body (6) and serves as a bearing for the locking shaft (15),
-The arm attachment alignment jaw (51) which as can be seen in the figure 9, allows the arm (B2) to grasp the attachment arm connection ear sleeve (Cl. a) and aligns the attachment arm connection ear sleeve thus enabling he the right and the left pins (2) (3) easily pass through the attachment bushes (C3) located on the center of the attachment arm connection ear sleeve (Cl. a), in order to achieve a practical installation/removal of work tool attachment (C) to the construction machine,
- The H-link attachment alignment jaw (52) which as can be seen in the figure 10, allows the H-link (B3) to grasp the attachment H-link connection ear sleeve (Cl.b) and aligns the attachment arm connection ear sleeve thus enabling he the right and the left pins (2) (3) easily pass through the attachment bushes (C3) located on the center of the attachment H-link connection ear sleeve (Cl.b), in order to achieve a practical installation/removal of work tool attachment (C) to the construction machine,
-The H-link fixing jaw (53) which as can be seen in the figure 11, fixes the H- link (B3) while it is connecting with the work tool attachment (C) in order to allow the H-link (B3) to grasp the attachment H-link connection ear sleeve (Cl.b) and to align it,
- The H-Link rest wedge (54) which as can be seen in the figure 11, is located on the arm (B2)and fixes the H-link (B3) while it is connecting with the work tool attachment (C) in order to allow the H-link (B3) to grasp the attachment H-link connection ear sleeve (Cl.b) and to align it,
-The attachment cylinder (55) which is installed on the arm (B2) and moves the work tool attachment (C),
-The side link, dog bones (56) which one of its tips is assembled on the point where the H-link (B3) and the attachment cylinder (55) is connected, and the other tip is assembled on the sides of the arm (B2) and allows to maintain the route and the angle of the attachment cylinder (55) and the H-link (B3) while the work tool attachment (C) is moving,
-The connection shaft (57) which maintains the connections of the side link (56), H-link (B3) and the attachment cylinder (55),
-The connection shaft (58) which maintains the linkage of the side link (56) and the arm (B2).
3. The hydraulic pin connection device (A) of claim 1 further comprising; the friction resistant attachment bushing (C3) which is in charge of lubricating the outer surfaces of the right and the left pins (2) (3) that are assembled on the centers of the attachment arm connection ear sleeve (Cl. a) and the attachment H-link connection ear sleeve (Cl.b), and the grease nipple (C4) which transfers the lubricant and lubricates the friction resistant attachment bushing (C3).
PCT/TR2019/050119 2018-11-21 2019-02-22 Hydraulic pin connection device for practical installation and removal of different work tool attachments to construction machinery. WO2020106239A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TR201817608 2018-11-21
TR2018/17608 2018-11-21

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705656A (en) * 1971-02-18 1972-12-12 Deere & Co Quick-attach loader bucket
EP1156161A2 (en) * 2000-05-19 2001-11-21 Lameter S.r.l. Quick-coupling device for attaching tools to an excavator
WO2012122469A1 (en) * 2011-03-10 2012-09-13 Clark Equipment Company Implement coupling system for a power machine
US20140373401A1 (en) * 2013-06-24 2014-12-25 Kinshofer Gmbh Quick-coupler
WO2015155232A1 (en) * 2014-04-08 2015-10-15 Caterpillar Sarl Quick coupler control device for working machine
US20160326712A1 (en) * 2015-05-04 2016-11-10 Deere & Company Quick coupler having spring applied, hydraulically released primary and secondary lock members mounted on same cross shaft

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705656A (en) * 1971-02-18 1972-12-12 Deere & Co Quick-attach loader bucket
EP1156161A2 (en) * 2000-05-19 2001-11-21 Lameter S.r.l. Quick-coupling device for attaching tools to an excavator
WO2012122469A1 (en) * 2011-03-10 2012-09-13 Clark Equipment Company Implement coupling system for a power machine
US20140373401A1 (en) * 2013-06-24 2014-12-25 Kinshofer Gmbh Quick-coupler
WO2015155232A1 (en) * 2014-04-08 2015-10-15 Caterpillar Sarl Quick coupler control device for working machine
US20160326712A1 (en) * 2015-05-04 2016-11-10 Deere & Company Quick coupler having spring applied, hydraulically released primary and secondary lock members mounted on same cross shaft

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