EP4266855A1

EP4266855A1 - Quick automatic attachment replacement apparatus

Info

Publication number: EP4266855A1
Application number: EP22882091.6A
Authority: EP
Inventors: Mehmet ¿nan ALKAN; Selin ALKAN; Olcay KELEPE
Original assignee: Inan Makina Sanayi Ve Ticaret AS
Current assignee: Inan Makina Sanayi Ve Ticaret AS
Priority date: 2022-02-23
Filing date: 2022-09-19
Publication date: 2023-11-01
Also published as: EP4266855A4

Abstract

An automatic attachment replacement apparatus that includes a lower bracket (3) to which an attachment (5) is rigidly connected, an upper bracket (2) that is detachably connected with the said lower bracket (3), a catch hook (6) in the said upper bracket, a catch pin (7), which provides the first assembly by passing to the said catch hook (6), at least one centering pin (9) on the said lower bracket (3), at least one centering slot (8) that provides centering by being attached to the said centering pin (9) and characterized in that; including one three-faceted locking mechanism (11) rigidly fixed to the upper bracket (2), at least one locking pin (18) moving in the same direction, opposite direction and co-ordinately entering the locking slots (10) in the said three-faceted locking mechanism (11), at least one locking piston (17) where said locking pins (18) are connected with locking bolts (21) and which enables the locking pins (18) to move, at least one double-sided ball screw (28) that allows said locking pistons (17) to move in a coordinated manner, at least one valve piston (13) that moves female hydraulic valves (15) in said three- faceted locking mechanism (11), at least one hydraulic mechanism body (16) in which said locking pistons (17) and valve piston (13) move.

Description

Quick Automatic Attachment Replacement Apparatus

Subject of the Invention and Technical Field

The invention relates to an automatic attachment replacement apparatus that allows attachments used in construction machines to be attached and removed. The invention relates to an automatic attachment replacement apparatus, in which hydraulic connections are made without the need for sensors, with a pin locking mechanism triggered by a hydraulic piston.

State of the Art

Today, different types of attachments are used to ensure that construction equipment can be used optimally in different construction and demolition works. Replacement of attachments allows construction machines (for example, an excavator) to carry out different operations such as excavation, crushing, loading on their own. Attachment change tools are used to attach and remove different types of attachments on the arm of a construction machine.

In order to minimize problems such as occupational safety, cost and time occurring during the disassembly and assembly of attachments to construction machines, various improvements have been made in the attachment replacement apparatus. In this context, first of all; there has been a development from the bracket connection, where the pin connection operations of the attachments are done manually, to the manual attachment replacement apparatus, where the mentioned operations are performed with the locking spring hook. As an alternative to the locking process with spring hook in manual attachment replacement apparatus, semi-automatic attachment replacement apparatuses have been developed in which locking is done automatically by means of a piston; however, it is seen that the hydraulic connection is made manually in all of the mentioned systems. In recent years, fully automatic attachment replacement apparatuses, in which hydraulic connection is made automatically in addition to the locking system, have been developed.

In the state of the art, fully automatic attachment replacement apparatus has solved the problems existing in the previous system; however, the pin locking system and the automatic hydraulic connection caused new problems to arise. In this context, ; occupational safety, cost and time-related problems in the old system where pin locking and hydraulic connection were realized with the physical intervention of a human have been solved in one aspect; however, the pin locking system, which was not a problem in the old system, and the determination of whether the hydraulic connections were made correctly showed itself as a new problem. In case the mentioned pin locking and hydraulic connections are not made correctly; problems that threaten work safety arise, such as the fall of the attachment. In addition to the occupational safety problems, the problems that will cause loss of time and money, such as damage to the hydraulic fittings, have the potential to render the fully automatic attachment replacement system more dysfunctional than the previous systems. Various improvements have been made to solve the problems briefly mentioned here.

In the state of the art, systems that can make pin locking and hydraulic hose connection with the help of one-way hydraulic piston have been developed. In the aforementioned systems, pin and valve locking movements are performed at the same time with one-way pistons, or first valve locking and then the system control with the help of sensors, pin locking action is performed with the piston. It is seen that the locking method of hydraulic oil delivery valves is adopted as a priority in each design. Since valves are very sensitive products, it causes oil leakage, which prevents the attachment from working, when centering is also a problem. In the state of the art, in the patent document numbered KR102304293B1, an automatic attachment replacement apparatus is mentioned, which is characterized by a guide slot and a guide slot in order for the mechanism to provide centering, and a sensor that allows the fasteners to fully pass into the slots. Positional information received by the sensor is transmitted to the management cabin (excavator cabin) via a communication cable to ensure that automatic attachment changes are made safely.

In the state of the art, in the the patent document numbered W02014058380A1 sensors arranged to verify that the locking mechanism of the automatic attachment replacement apparatus in a correct locking position mentioned. The invention is more focused on the features of the sensor(s).

In the state of the art, the patent document no. EP3763882A1 relates to a quick attachment replacement apparatus developed to automatically change an attachment and a method that allows the locking mechanism of the said apparatus to be monitored. The invention has at least one locking element and a display device for monitoring disposed on the support. The mechanism is controlled by optical and acoustic sensors, but in cases such as sensor failures, the system fails.

In the state of the art, in the ten-patent document CN112235439 A, the attachment replacement apparatus is related to a safe locking mechanism developed to prevent falls that may occur in case of hydraulic fluid leakage. Said apparatus comprises a quick-change mechanical locking device for a normally closed excavator comprising two symmetrically arranged side plate pieces and a locking control piece arranged between them. As can be seen in the patent documents mentioned above, sensors have been added to the systems to solve the hydraulic connection (valve connections) problems and centering problems experienced in the locking systems used in automatic attachment replacement apparatuses. The aforementioned sensors are seen to be equipped with optical or acoustic elements that will notify to the operator if the locking pins enter into slot and the presence of centering problems that will cause damage to the hydraulic connections. Since valve locking is the priority in all designs with or without sensors, the most quickly damaged parts are experienced in the valves, which are the most important and most expensive parts. The sensors may deteriorate over time due to the heavy conditions of the working area, and the connection cables may break due to the debris falling on the construction machine. In field conditions, it is difficult to supply these connection cables or sensors in mines and quarries, causing the field work to be stopped for hours.

Technical Problems That the Invention Aims to Solve

With the invention, an automatic attachment replacement apparatus is aimed at which pin locking and hydraulic connections are made without the need for sensors.

In accordance with this purpose, in the event that the attachment is attached to the machine, an apparatus having a mechanism in the form of locking coordinated pins that move linearly and oppositely to each other first, and then in which valves move and lock, in the event that the attachment is separated from the machine, a mechanism in the form of separating the valves first and then separating the coordinated pins mentioned, is targeted.

An advantage of the automatic attachment replacement apparatus, which is the subject of the invention, in the state of the art, it has eliminated the need for sensors, which are needed due to valve connection problems and centering problems in locking systems and used to verify whether the system is working properly.

The invention eliminates the need for the use of sensors thanks to the three-faceted locking mechanism, which acts with the principle of first locking the pins and then locking the valves in case of being stuck, and separating the valves first and then the pins in case of disengagement. If any of the coordinated pins in the aforementioned three-faceted locking mechanism, which move in a linear and opposite direction with respect to each other, encounter an obstacle and stop, the other will also stop. Thus, the pins will either be fully inserted or not inserted at all. In case the pins are inserted, centering will be ensured and the valves will be moved to ensure that they are locked. In any case where the pins are not inserted, the valve mechanism will not act and an environment where the valves can be damaged will not be created. Another advantage of the inventive automatic attachment replacement apparatus will prevent work interruptions due to sensor failures, as it eliminates the need for sensors. Figures will be used to better understand the automatic attachment replacement apparatus, which is the subject of the invention.

Explanation of Figures

Figure- 1 : The perspective view of the automatic attachment replacement apparatus, which is the subject of the invention, on the attachment.

Figure- 2: Perspective view showing the lower bracket and top brackets, which are the two main parts of the automatic attachment replacement apparatus, which is the subject of the invention, separately.

Figure- 3: The exploded perspective view of the upper bracket in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 4: Perspective view of the lower bracket table in the automatic attachment replacement apparatus, which is the subject of the invention, and the exploded perspective view of the valve mechanism, which is an element of the lower bracket.

Figure- 5: Side projection view of the upper and lower brackets in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 6: The front projection cross-sectional view of the upper and lower brackets in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 7: The cross-sectional view of the upper and lower brackets in the open position of the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 8: The side projection view of the upper and lower brackets in the automatic attachment replacement apparatus, which is the subject of the invention, in the closed position.

Figure- 9: The front projection cross-sectional view of the upper and lower brackets in the automatic attachment replacement apparatus, which is the subject of the invention, in the closed position. Figure- 10: The side projection of the upper and lower brackets in the automatic attachment replacement apparatus, which is the subject of the invention, in the closed position.

Figure- 11 : Top projection view of the Lower bracket in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 12: The side projection section view of the Lower bracket in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 13: The top projection view of the Upper bracket on the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 14: The cross-sectional view of the Upper bracket in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 15: The front half-section perspective view of the three-faceted locking mechanism in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 16: is the rear half-section perspective view of the three-faceted locking mechanism in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 17: Exploded perspective view of the three-faceted locking mechanism in the automatic attachment replacement apparatus, which is the subject of the invention.

Figure- 18: The flow chart showing the working operation of the automatic attachment replacement apparatus, which is the subject of the invention.

Section, Part and Reference Numbers to Help Explain the Invention

1. Automatic attachment replacement apparatus

2. Upper bracket

3. Lower bracket

4. Upper bracket pin

5. Attachment

6. Catch hook

7. Catch pin 8. Centering slot

9. Centering pin

10. Locking slot

11. Three-faceted locking mechanism

12. Valve tube

13. Valve piston

14. Male hydraulic valve

15. Female hydraulic valve

16. Hydraulic mechanism body

17. Locking piston

18. Locking pin

19. Pin slot

20. Piston cover

21. Locking bolt

22. Bushing bolt

23. Opening nipple

24. Closing nipple

25. Locking channel

26. Fastener

27. Valve channel

28. Double-sided ball screw

29. Upper bracket Bushing

30. Connection slot

31. Lower bracket plate

32. Fixed multi-connector plate

33. Upper bracket front support plate

34. Movable multi-connector plate

Process Flow Chart to Help Explain the Invention

100- First assembly process of lower bracket and upper bracket

110- Performing pin locking

120- Performing valve locking

130- Ending valve locking

140- Ending pin locking

150- Disassembly process of lower bracket and upper bracket

Explanation of the Invention

The automatic attachment replacement apparatus (l)of the invention is a secure locking device consisting of two main parts, a lower bracket (3) and an upper bracket, characterized by hydraulic valve connections positioned in the said lower bracket (3) and locking mechanism positioned in the upper bracket, in which pin locking and hydraulic valve connections are performed without the need for sensors. It is aimed at an automatic attachment replacement apparatus (1) with a mechanism. Said attachment replacement apparatus (1), when the attachment (5) is attached to the machine, firstly the coordinately moving locking pins (18) on the upper bracket (2) pass into the locking slots in the lower bracket, and then the valves are locked, in the event that the attachment (5) is separated from the machine, a safe locking mechanism with the function of performing this method is aimed with a four-stage method, first separating the valves and then separating the coordinated locking pins (18).

Although the automatic attachment replacement apparatus (1) of the invention is described through the attachments used in large-scale construction machines such as excavators, this should not be restrictive, the invention should be considered in the broadest sense.

Pictures will be used to explain the automatic attachment replacement apparatus (1), which is the subject of the invention, in more detail; however, the pictures used should not be binding as there may be changes in picture constructions, dimensions or device details.

In Figure- 1, the lower bracket (3) part of the automatic attachment replacement apparatus (1) is fixed on an attachment (5). The position of the catch hook (6) of the upper bracket (2) piece, which is at the top of the mentioned figure, during the attachment of the lower bracket (3) to the catch pin (7) is visible.

In Figure-2, the two main parts of the automatic attachment replacement apparatus (1), the upper bracket (2) and the lower bracket (3), are seen separately. In this way, the upper bracket pins (4) that allow the upper bracket (2) to be attached to the arm of the construction machine, the catch hook (6) that provides the first assembly of the said upper bracket (2) with the lower bracket (3), and the catch in connection with the said catch hook (6) and the catch pin (7) is visible. In Figure 2, the centering pin (9) and the centering slot (8) that ensure the centering between the lower bracket (3) and the upper bracket (2) are shown. In Figure-2, the locking pins (18) acting in the same direction and coordinately, which are activated after the centering process mentioned, and the locking slots (10) through which the said locking pins (18) pass are also given.

Exploded pictures of the upper bracket (2) in figure-3 and the lower bracket (3) in figure-4 are given. Figure- 3 shows female hydraulic valves (15), hydraulic mechanism body (16), locking pins (18), fasteners (26), bushing bolt (22), upper bracket bushing (29), upper bracket pins (4) the pin slots (19) through which it passes and the movable multi-connector plate (34) where the female hydraulic valves (15) are positioned are seen. In Figure 4, the valve tubes (12), male hydraulic valves (14) and the fixed multi-connector plate (32) rigidly positioned on the lower bracket plate (31) where the mentioned male hydraulic valves (14) are located on the lower bracket (3) are seen.

The pictures of the automatic attachment replacement apparatus (1), which is the subject of the invention, when the upper bracket (2) and the lower bracket (3) are open are as in Figure-5, Figure-6 and Figure-7. The cross-sectional view of the upper bracket (2) and the lower bracket (3), defined as the B-B section in Figure-6, in the open position before the locking position is given in Figure-7. In the aforementioned figure, three-faceted locking mechanism (11) is seen on the upper bracket (2) and male hydraulic valves (14) on the lower bracket (3).

Figure-8 shows the side projection view of the upper bracket (2) and the lower bracket (3) in the locked position. The front projection cross-sectional view of the upper bracket (2) and the lower bracket (3), which is defined as the N-N section as mentioned, in the locked position is given in Figure-9. The cross-sectional view of the upper bracket (2) and the lower bracket (3), defined as the 0-0 section in Figure 9, in closed position, is given in Figure 10.

The top projection view of the lower bracket (3) in Figure 11 and the side projection section view defined as the C-C section as mentioned are given in Figure 12. The cross-sectional view of the upper bracket (2), defined as the D-D section in Figure- 13, is given in Figure-14. As mentioned, the upper bracket front support plate (33) on which the three-faceted locking mechanism (11) is fixed is visible. In Figure 15, the front partial cross-sectional perspective view of the three-faceted locking mechanism (11) is given. A partial cross-sectional perspective view from the rear of the three-faceted locking mechanism (11) is given in Figure 16. An exploded perspective view of the three-faceted locking mechanism (11) is given in Figure 17. In this view, the mechanical elements, including the locking pins (18) and the valve piston (13), which provides the valve movement, are shown separately. In Figure 18, the flow chart showing the working operation of the automatic attachment replacement apparatus (1), which is the subject of the invention, is given.

The automatic attachment replacement apparatus (1), which is the subject of the invention, consists of two main parts, the one is an upper bracket (2), which is connected to the arm of the work machines by means of the upper bracket pins (4) and the other one is a lower bracket (3), which can be in different shapes and sizes to fit different types of attachments (5) such as breaker, scissors, which is positioned under the said upper bracket (2) and fixed to the attachment (5) through the connection slots (30) located on the lower bracket plate (31). The automatic attachment replacement apparatus (1), which is the subject of the invention, contains at least two catch hooks (6), an upper bracket (2) that is connected to the said lower bracket (3) in a detachable manner. In the said lower bracket (3), there is at least one catch pin (7) that provides the first assembly by passing to the catch hook (6) located in the upper bracket (2). Said upper bracket

(2) has at least one centering slot (8) that provides centering when attached to the centering pin (9) located in the lower bracket (3). The upper bracket (2) part of the automatic attachment replacement apparatus (1) includes a three-faceted locking mechanism (11) driven by hydraulic pistons. When the locking pins (18) in the said three-faceted locking mechanism (11) move in the same direction, in the opposite direction and in coordination, they enter the locking slots (10) in the lower bracket

(3), the pin locking is performed. The three-faceted locking mechanism (11) includes locking pistons (17) and a hydraulic mechanism body (16) in which the valve piston (13) is positioned and moved. Said locking pistons (17) are connected to the locking pins (18) by means of locking bolts (21) and allow the locking pins (18) to move in the opening and closing directions. By moving the female valves (15) positioned on at least one valve piston (13) in the said hydraulic mechanism body (16) towards the male valves (14) positioned in the lower bracket (3), valve locking is achieved. In the said hydraulic mechanism body (16), there is a doublesided ball screw (28) positioned between the locking pistons (17) and allowing the locking pistons (17) to move in a coordinated manner.

The three-faceted locking mechanism (11) in the automatic attachment replacement apparatus (1), which is the subject of the invention, includes locking pistons (17) and a hydraulic mechanism body (16) with openings in which the valve piston (13) moves and is positioned. Preferably, on the upper part of the said hydraulic mechanism body (16), there are opening nipple (23) and closing nipple (24) that allows the hydraulic fluid to enter and exit the system.. Said hydraulic mechanism body (16) includes at least two locking channels (25) and at least two valve channels (27). The hydraulic fluid circulating in the system through the aforementioned channels moves the locking pistons (17) and the valve piston (13) in the opening and closing directions.

The hydraulic fluid required for the movement of the three-faceted locking mechanism (11) positioned in the upper bracket (2) part of the automatic attachment replacement apparatus (1), which is the subject of the invention, is provided by the opening nipple (23) and the closing nipple (24) located preferably on the upper part of the said mechanism. The hydraulic fluid coming from the arm of the construction machine, which is equipped with the upper bracket (2), fills the space where the locking pistons (17) are positioned in the hydraulic mechanism body (16) by means of the opening nipple (23). In the space filled with the opening nipple (23) there is preferably a double-sided ball screw (28) positioned between the locking pistons (17). The movement in the direction of the locking pistons (17) moving away from each other indicates the opening direction, and the movement in the direction of approaching each other indicates the closing direction. The locking pistons (17) move towards the opening direction by moving away from each other linearly with the hydraulic fluid pressure entering the system via the opening nipple (23). This movement allows the locking pins (18) to enter the locking slots (10) and the pin locking process takes place. The locking pistons (17) approach each other linearly with the effect of the hydraulic fluid coming from the locking channels (25). With this said movement, the locking pistons (17) move towards the closing direction and cause the locking pins (18) to come out of the locking slots (10). In these two linear movements, the double-sided ball screw (28) positioned between the two locking pistons (17) ensures that the movement is coordinated. This coordinated movement, for any reason, causes one of the locking pins (18) to stop and the other to stop. In this way, either the system will go into a full crash state or there will be no crash at all. In both cases, the need to check whether the locking pins (18) fit into the locking slots (10) by means of sensors has been eliminated.

The automatic attachment replacement apparatus (1), which is the subject of the invention, contains at least two valve channels (27), after the locking pins (18) enter the locking slots (10), allowing the hydraulic flow to be provided to the space where the valve piston (13) is located in the hydraulic mechanism body (16) and connected to the space in which the locking pistons (17) move. After the said valve channels (27) are opened, it moves the female hydraulic valves (15) positioned on the valve piston (13) together with the hydraulic pressure towards the male hydraulic valves (14) located in the lower bracket (3) and resembling a device on the fixed multiconnector plate (32). As a result of this process, female hydraulic valves (15) and male hydraulic valves (14) are combined and hydraulic valve locking takes place. After the aforementioned hydraulic valve locking, the hydraulic flow required for the mechanical movements of the attachment (5) is provided. The movement of the female hydraulic valves (15) positioned on the valve piston (13) towards the male hydraulic valves (14) indicates the opening direction, and the movement in the opposite direction to the said movement indicates the closing direction.

The invention also includes a locking method for the automatic attachment replacement apparatus (1), and most generally includes the following steps;

Initial assembly of lower bracket and upper bracket (100)

Performing pin locking (110)

Performing valve locking (120)

Ending valve locking (130)

Ending pin locking (140) The explanations of this method mentioned above will be as follows.

Initial assembly process (100) of the lower bracket (3) and the upper bracket (2); At this stage, the catch pin (7) on the lower bracket (3) part of the automatic attachment replacement apparatus (1) is held by the catch hook (6) on the upper bracket (2) and the attachment (5) is lifted upwards by means of the arm of the work machine in a vertical axis with respect to the surface. After the mentioned process, the first assembly phase is completed by ensuring that the centering slot (8) in the upper bracket (2) is fully seated on the centering pin (9) in the lower bracket (3).

Performing pin locking (110); After the first assembly process (100) of the lower bracket (3) and the upper bracket (2) is performed, the locking pistons (17) positioned parallel and opposite to each other in the space inside the said mechanism body (16) move in opposite directions to each other by the effect of the oil pressure coming through the opening nipple (23). When the coordinately moving locking pins (18) complete their movement in the opening direction and are fully inserted into the locking slots (10), the pin locking process is performed. If any of the locking pins (18) encounters an obstacle during the said process, the other locking pin (18) will also stop.

Performing valve locking (120); This step does not begin until the pin locking performing (110) step is finished. First, the valve channels (27) in the space where the locking pistons (17) move are opened in order to provide hydraulic oil flow to the space where the valve piston (13) is located in the hydraulic mechanism body (16). After the valve channels (27) are opened, the hydraulic pressure moves the female hydraulic valves (15) positioned on the valve piston (13) towards the male hydraulic valves (14) located on the lower bracket (3) and resembling a device on the fixed multi-connector plate (32). As a result of the aforementioned process, female hydraulic valves (15) and male hydraulic valves (14) are combined and hydraulic valve connection is made.

Ending valve locking (130); When it is desired to separate the work machine with the attachment (5), oil flow is provided from the closing nipple (24) and oil output is provided from the opening nipple (23). The valve piston (13) pulls the female hydraulic valves (15) against the locking direction, ending the hydraulic connection.

Ending pin locking (140); When the valve piston (13) is fully closed, the locking channels (25) are opened. It fills the space between the locking pistons (17) and the locking piston cover (20) in the three-faceted locking mechanism (11) of the said locking channels (25) and pushes the locking pistons (17) towards the closing direction. When the locking pistons (17) come to the full closing position, the locking pins (18) mounted on the said pistons also move in the closing direction from the locking slots (10) and when they come out of the said locking slots (10), the pin locking is terminated. After the mentioned process, the connection of the upper bracket (2) and the lower bracket (3) is terminated, and the attachment (5) is separated from the arm of the heavy equipment.

The technical features and working principle of the automatic attachment replacement apparatus (1), which is the subject of the invention, has eliminated the need for the use of sensors, which are used to check whether the pin locking system is performed properly during the attachment (5) replacement operations of the work machines.

Application of the Invention to Industry

The automatic attachment replacement apparatus (1), which is the subject of the invention, can be used in all types and sizes of construction machines, which are used in different construction and demolition works and have the ability to change attachments.

Claims

C L A I M S An automatic attachment replacement apparatus that includes a lower bracket (3) to which an attachment (5) is rigidly connected, an upper bracket (2) that is detachably connected with the said lower bracket (3), a catch hook (6) in the said upper bracket, a catch pin (7), which provides the first assembly by passing to the said catch hook (6), at least one centering pin (9) on the said lower bracket (3), at least one centering slot (8) that provides centering by being attached to the said centering pin (9) and characterized in that; including one three-faceted locking mechanism (11) rigidly fixed to the upper bracket (2), at least one locking pin (18) moving in the same direction, opposite direction and co-ordinately entering the locking slots (10) in the said three-faceted locking mechanism (11), at least one locking piston (17) where said locking pins (18) are connected with locking bolts (21) and which enables the locking pins (18) to move, at least one double-sided ball screw (28) that allows said locking pistons (17) to move in a coordinated manner, at least one valve piston (13) that moves female hydraulic valves (15) in said three-faceted locking mechanism (11), at least one hydraulic mechanism body (16) in which said locking pistons (17) and valve piston (13) move. The configuration according to claim- 1 and characterized in that; including said at least two locking channels (25) that allow the said hydraulic mechanism body (16) to terminate the pin locking by moving the locking pistons (17) in the closing direction. The configuration in accordance with claim- 1 and characterized in that; including at least two valve channels (27) that allow the male hydraulic valves (14) and female hydraulic valves (15) to be locked by moving the valve piston (13) in the opening direction. The locking method for the automatic attachment replacement apparatus (1), which is the subject of the invention, and is characterized in that; including the following steps;

- Initial assembly process of the lower bracket and the upper bracket (100)

- Performing pin locking (110)

- Performing valve locking (120)

- Ending valve locking (130)

- Ending pin locking (140) The method according to claim 3 and characterized in that; the step of performing the pin locking (110) includes the steps that the movement of the locking pins (18), with coordinately moving locking pins (18) to stop when any of the locking pins (18) encounter an obstacle, continues until the said pins are fully inserted into the locking slots (10). The method according to claim 3 and characterized in that; the stage of performing the valve locking (120) includes the steps of opening the valve channels (27) and fully connecting the female hydraulic valves (15) driven by the valve piston (13) with the male hydraulic valves (14). The method according to claim 3 and characterized in that; the stage of ending the valve locking (130) includes the stages of providing oil flow from the closing nipple (24) and providing oil outflow from the opening nipple (23) and ending the hydraulic connection by pulling the female hydraulic valves (15) of the valve piston (13) against the locking direction. The method according to claim 3 and characterized in that; the step of terminating the pin locking (140) includes the step of continuing until the locking pins (18) come out of the locking slots (10) completely.