Pin dismounting tool for Stirling cryocooler

Abstract

The utility model discloses a stirling cryocooler pin dismounting tool and relates to the technical field of pin dismounting, the stirling cryocooler pin dismounting tool comprises a dismounting fixing frame, a fixing assembly and a dismounting assembly, and the dismounting fixing frame is used for being fixed to a cryocooler crankcase; the fixing assembly is arranged on the disassembly fixing frame and used for abutting against the upper side of a first cantilever structure of a refrigerator crankcase. And the dismounting assembly is arranged on the dismounting fixing frame, can move up and down, and is used for applying force to a pin from the lower side of a second cantilever structure of the refrigerator crankcase so as to eject the pin penetrating through the first cantilever structure and the second cantilever structure upwards. According to the dowel dismounting tool for the Stirling cryocooler, through cooperation of the fixing assembly and the dismounting assembly, the problems that in the prior art, the operation space is limited, the dismounting difficulty is large, the requirement for personnel is high, parts are prone to being damaged, and metal chippings are generated are solved, and the dismounting efficiency and the reusability of the parts are improved.

Description

Technical Field

[0001] This application relates to the field of pin removal technology, and in particular to a tooling for removing pins from a Stirling refrigeration unit. Background Technology

[0002] Stirling refrigerators, as cryogenic refrigeration equipment, are widely used in fields such as cryogenic infrared detectors. With the continuous expansion of application scenarios, their market demand is increasing daily. In the production process of Stirling refrigerators, due to their complex structure and the delicate fit between parts, current assembly mainly relies on manual labor, resulting in a low yield rate. Since the cost of refrigerator parts accounts for a significant portion of the overall cost, machine repair and parts reuse are effective ways to reduce costs. In the repair and reuse process, the removal of pins is a crucial step, directly affecting the reusability of parts and repair costs.

[0003] Currently, the removal of pins in Stirling refrigerators typically involves using a cylinder of the same diameter as the pin. A hand-operated press is used to press the pin down from above, forcing it out from under the component, and then the cylinder is pulled out to remove the pin. However, this existing technology has several problems. First, the limited operating space makes the disassembly process extremely inconvenient and increases the difficulty of operation. Second, the disassembly process requires significant external force, which not only leads to long operation times and low efficiency but also demands a high level of operator skill. More seriously, because the pins are bonded with high-strength adhesive, surrounding parts are easily affected by external forces during disassembly, causing deformation or damage, rendering them unusable. Furthermore, the disassembly process easily generates metal shavings, contaminating other parts of the refrigerator. Utility Model Content

[0004] The purpose of this application is to provide a tooling for removing pins from Stirling refrigerators. By cooperating with the fixing and disassembly components, it solves the problems of limited operating space, high disassembly difficulty, high personnel requirements, easy damage to parts and generation of metal shavings in the prior art, thereby improving disassembly efficiency and the reusability of parts.

[0005] To achieve the above objectives, this application provides a tooling for disassembling the pins of a Stirling refrigerator, comprising:

[0006] Remove the mounting bracket, which is used to secure it to the crankcase of the refrigeration unit;

[0007] A fixing component is provided on the disassembly fixing frame, and the fixing component is used to abut against the upper side of the first cantilever structure of the refrigeration crankcase;

[0008] A disassembly assembly is provided on the disassembly fixing frame. The disassembly assembly is movable up and down. The disassembly assembly is used to apply force to the pin from the lower side of the second cantilever structure of the refrigeration engine crankcase, pushing the pin that passes through the first cantilever structure and the second cantilever structure upward.

[0009] In some embodiments, the disassembly bracket includes:

[0010] The frame is used to fix it to the crankcase of the refrigeration unit;

[0011] A first slider is slidably disposed on the frame, and the first slider can slide laterally along the frame;

[0012] The fixing component is located on the first slider.

[0013] In some embodiments, the fixing component is movable up and down, and the disassembly fixing bracket further includes:

[0014] A first locking element is used to lock the position of the fixing component when the fixing component abuts against the upper side of the first cantilever structure of the refrigeration crankcase.

[0015] In some embodiments, the fixing component includes:

[0016] A fixed column is inserted through the first slider, and the lower end of the fixed column is provided with a support structure for abutting against the upper side of the first cantilever structure of the refrigeration machine crankcase.

[0017] The first locking element includes a screw, the first slider has a threaded hole, the screw passes through the threaded hole, and the screw locks the fixing post.

[0018] In some embodiments, the abutment structure has an arcuate surface for mates with the upper side of the first cantilever structure of the refrigeration unit crankcase; and / or,

[0019] The supporting structure is provided with a pin-removal groove for receiving the ejected pin.

[0020] In some embodiments, the disassembly bracket includes:

[0021] The frame is used to fix it to the crankcase of the refrigeration unit;

[0022] The second slider is slidably disposed on the frame, and the second slider can slide laterally along the frame;

[0023] The disassembly assembly is located on the second slider.

[0024] In some embodiments, the disassembly assembly includes:

[0025] A pull column is inserted through the second slider, and the lower end of the pull column is provided with a pushing structure for pushing the pin.

[0026] A first adjusting member is connected to the pull column. The first adjusting member is used to control the pull column to move upward so as to push the pin that passes through the first cantilever structure and the second cantilever structure upward.

[0027] In some embodiments, the pull column is threaded, and the first adjusting member includes a nut, which is fitted onto the pull column and threadedly connected to it. Rotating the nut controls the pull column to move upward.

[0028] In some embodiments, the pusher structure is provided with a pusher groove for engaging with the lower end of the pin.

[0029] In some embodiments, the disassembly bracket includes:

[0030] Frame;

[0031] The mounting component is located on the frame and is used to fix it to the crankcase of the refrigeration unit.

[0032] Compared to the aforementioned background technology, the Stirling refrigeration unit pin removal fixture provided in this application mainly includes a removal fixing frame, a fixing component, and a removal component. The removal fixing frame is used to fix itself on the crankcase of the refrigeration unit; the fixing component is located on the removal fixing frame and is used to abut against the upper side of the first cantilever structure of the crankcase of the refrigeration unit; the removal component is located on the removal fixing frame and is movable up and down. The removal component is used to apply force to the pin from the lower side of the second cantilever structure of the crankcase of the refrigeration unit, pushing the pin that passes through the first cantilever structure and the second cantilever structure upward.

[0033] In the maintenance and parts reuse process of Stirling refrigeration units, the removal of pins is a crucial step. However, existing disassembly methods have several problems, such as limited operating space, high disassembly difficulty, high skill requirements for operators, easy damage to parts, and generation of metal shavings. These problems not only reduce disassembly efficiency but also increase the non-reusability of parts, thereby increasing maintenance costs.

[0034] To address these issues, this application provides a Stirling refrigeration unit pin removal fixture, which mainly includes a removal fixing frame, a fixing component, and a removal component. The removal fixing frame is used to fix itself to the refrigeration unit crankcase, providing stable support and positioning to ensure the stability of the entire removal process. The fixing component is located on the removal fixing frame and its function is to abut against the upper side of the first cantilever structure of the refrigeration unit crankcase. In this way, the fixing component can effectively fix the first cantilever structure, preventing deformation or displacement during removal, thereby solving the problems of limited operating space and easy damage to parts in the prior art.

[0035] The disassembly assembly is also located on the disassembly bracket and can move up and down. During disassembly, the disassembly assembly applies force to the pin from the underside of the second cantilever structure of the refrigeration unit crankcase, pushing the pin that passes through the first and second cantilever structures upwards. This design not only improves disassembly efficiency but also reduces the skill requirements for operators, because the up-and-down movement of the disassembly assembly allows for precise control of the direction and force applied, avoiding damage to parts and the generation of metal shavings due to improper operation.

[0036] By combining the fixing and disassembly components, this technical solution effectively solves several problems in the prior art. The fixing component ensures the stability of the first cantilever structure, while the disassembly component enables the smooth removal of the pin through precise up-and-down movement. This design not only improves disassembly efficiency but also protects the parts from damage and enhances their reusability. Therefore, the Stirling refrigeration unit pin removal fixture, through the cooperation of the fixing and disassembly components, solves the problems of limited operating space, high disassembly difficulty, high personnel requirements, easy damage to parts, and generation of metal shavings in the prior art, significantly improving disassembly efficiency and the reusability of parts.

[0037] Based on the above structural and process descriptions, it can be seen that the Stirling refrigeration unit pin removal fixture has at least the following beneficial effects: the Stirling refrigeration unit pin removal fixture solves the problems of limited operating space, high disassembly difficulty, high personnel requirements, easy damage to parts and generation of metal shavings in the prior art through the cooperation of the fixing component and the disassembly component, thereby improving the disassembly efficiency and the reusability of parts. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0039] Figure 1 A schematic diagram of the Stirling refrigerator pin disassembly fixture provided in an embodiment of this application;

[0040] Figure 2 A schematic diagram of the Stirling refrigeration unit pin removal fixture and the refrigeration unit crankcase provided in the embodiments of this application;

[0041] Figure 3 for Figure 1 Front view of the tooling for removing the pins of a Stirling refrigeration unit;

[0042] Figure 4 for Figure 3 Enlarged view of the area near the center pin;

[0043] Figure 5 Assembly of the Stirling refrigerator pin removal fixture provided in the embodiments of this application Figure 1 ;

[0044] Figure 6 Assembly of the Stirling refrigerator pin removal fixture provided in the embodiments of this application Figure 2 .

[0045] in:

[0046] Refrigeration unit crankcase 01, first cantilever structure 02, second cantilever structure 03, pin 04.

[0047] Stirling Refrigeration Unit Pin Removal Tool 100

[0048] Disassemble the fixing bracket 1, frame 11, first slider 12, threaded hole 121, first locking component 13, second slider 14, mounting component 15.

[0049] Fixing component 2, fixing post 21, supporting structure 22, arc-shaped surface 221, pin removal groove 222

[0050] Disassembly components 3, pull column 31, push-top structure 32, push nail groove 321, and first adjustment component 33. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Please refer to Figure 1 and Figure 2 ,in, Figure 1 This is a schematic diagram of the Stirling refrigerator pin disassembly fixture provided in an embodiment of this application. Figure 2 This is a schematic diagram of the Stirling refrigeration unit pin removal tooling and the refrigeration unit crankcase provided in the embodiments of this application.

[0054] In a first specific embodiment, the Stirling refrigeration unit pin removal fixture 100 provided in this application mainly includes a removal fixing frame 1, a fixing component 2, and a removal component 3. The removal fixing frame 1 is used to fix it on the crankcase 01 of the refrigeration unit; the fixing component 2 is disposed on the removal fixing frame 1 and is used to abut against the upper side of the first cantilever structure 02 of the crankcase 01 of the refrigeration unit; the removal component 3 is disposed on the removal fixing frame 1 and can move up and down. The removal component 3 is used to apply force to the pin 04 from the lower side of the second cantilever structure 03 of the crankcase 01 of the refrigeration unit, pushing the pin 04 that passes through the first cantilever structure 02 and the second cantilever structure 03 upward.

[0055] It should be noted that the Stirling refrigerator pin removal fixture 100 provided in this application is applicable to the removal of pin 04 on the crankcase 01 of a Stirling refrigerator. In the Stirling refrigerator, the first cantilever structure 02 is located above the second cantilever structure 03. Pin 04 is inserted into the first cantilever structure 02 and the second cantilever structure 03 from top to bottom, and the pin 04 is glued and fixed to the first cantilever structure 02. To remove pin 04, the prior art involves using a cylinder with the same diameter as pin 04 and a hand-operated press to press pin 04 from top to bottom, thus pushing pin 04 out from below.

[0056] In the maintenance and parts reuse process of Stirling refrigeration units, the removal of pin 04 is a crucial step. However, the existing disassembly methods have several problems, such as limited operating space, high disassembly difficulty, high skill requirements for operators, easy damage to parts, and generation of metal shavings. These problems not only reduce disassembly efficiency but also increase the non-reusability of parts, thereby increasing maintenance costs.

[0057] To address these issues, this application provides a Stirling refrigeration unit pin removal fixture 100, which mainly includes a removal fixing frame 1, a fixing component 2, and a removal component 3. The removal fixing frame 1 is used to fix itself to the crankcase 01 of the refrigeration unit, providing stable support and positioning to ensure the stability of the entire removal process. The fixing component 2 is located on the removal fixing frame 1 and its function is to abut against the upper side of the first cantilever structure 02 of the crankcase 01. In this way, the fixing component 2 can effectively fix the first cantilever structure 02, preventing deformation or displacement during removal, thereby solving the problems of limited operating space and easy damage to parts in the prior art.

[0058] The disassembly assembly 3 is also located on the disassembly fixing frame 1 and can move up and down. During disassembly, the disassembly assembly 3 applies force to the pin 04 from the lower side of the second cantilever structure 03 of the refrigeration unit crankcase 01, pushing the pin 04, which passes through the first cantilever structure 02 and the second cantilever structure 03, upward. This design not only improves disassembly efficiency but also reduces the skill requirements for operators, because the up-and-down movement of the disassembly assembly 3 allows for precise control of the direction and force applied, avoiding damage to parts and the generation of metal debris due to improper operation.

[0059] By combining the fixing component 2 and the disassembly component 3, this technical solution effectively solves several problems in the prior art. The fixing component 2 ensures the stability of the first cantilever structure 02, while the disassembly component 3 achieves smooth disassembly of the pin 04 through precise up-and-down movement. This design not only improves disassembly efficiency but also protects the parts from damage and enhances their reusability. Therefore, the Stirling refrigeration unit pin disassembly fixture 100, through the combination of the fixing component 2 and the disassembly component 3, solves the problems of limited operating space, high disassembly difficulty, high personnel requirements, easy damage to parts, and generation of metal shavings in the prior art, significantly improving disassembly efficiency and the reusability of parts.

[0060] Based on the above structural and process descriptions, it can be seen that the Stirling refrigeration unit pin removal fixture 100 has at least the following beneficial effects: the Stirling refrigeration unit pin removal fixture 100, through the cooperation of the fixing component 2 and the removal component 3, solves the problems of limited operating space, high disassembly difficulty, high personnel requirements, easy damage to parts and generation of metal shavings in the prior art, thereby improving disassembly efficiency and the reusability of parts.

[0061] Please refer to Figures 3 to 6 ,in, Figure 3 for Figure 1 Front view of the tooling for removing the pins of a Stirling refrigeration unit. Figure 4 for Figure 3 An enlarged view of the area near the center pin. Figure 5 Assembly of the Stirling refrigerator pin removal fixture provided in the embodiments of this application Figure 1 , Figure 6 Assembly of the Stirling refrigerator pin removal fixture provided in the embodiments of this application Figure 2 .

[0062] In some embodiments, disassembling the mounting bracket 1 includes:

[0063] The frame 11 is used to fix it to the crankcase 01 of the refrigeration unit;

[0064] The first slider 12 is slidably disposed on the frame 11, and the first slider 12 can slide laterally along the frame 11;

[0065] The fixing component 2 is located on the first slider 12.

[0066] In this embodiment, the disassembly fixing frame 1 is designed to include a frame body 11 and a first slider 12. The main function of the frame body 11 is to serve as the supporting base for the entire disassembly fixture. It is fixed to the crankcase 01 of the refrigeration unit, providing a stable installation position for the fixture. The first slider 12 is mounted on the frame body 11 and can slide laterally along the frame body 11.

[0067] The key to this design is that it allows for lateral adjustment of the fixing component 2. The fixing component 2 is mounted on the first slider 12; therefore, by moving the first slider 12, the lateral position of the fixing component 2 can be adjusted. This adjustment function is crucial because it allows for precise adjustment of the fixing component 2 according to the actual situation before the first cantilever structure 02 is secured, ensuring that the fixing component 2 accurately abuts against the upper side of the first cantilever structure 02, thereby providing stable support and positioning for the removal of the pin 04.

[0068] In some embodiments, the fixing component 2 is movable up and down, and the disassembly of the fixing bracket 1 further includes:

[0069] The first locking member 13 is used to lock the position of the fixing component 2 when the fixing component 2 abuts against the upper side of the first cantilever structure 02 of the refrigeration crankcase 01.

[0070] In this embodiment, the fixing component 2 is designed to move up and down. This design is to allow for flexible adjustment of the contact force and position between the fixing component 2 and the first cantilever structure 02 during disassembly, ensuring that the fixing component 2 can accurately abut against the upper side of the first cantilever structure 02, thereby providing stable support when disassembling the pin 04 and preventing the first cantilever structure 02 from deforming or shifting.

[0071] To secure the position of component 2 after adjustment, the disassembly bracket 1 also includes a first locking member 13. The first locking member 13 locks the position of component 2 when it abuts against the upper side of the first cantilever structure 02 of the refrigeration unit crankcase 01. Thus, once component 2 is adjusted to the appropriate position and abuts against the first cantilever structure 02, the first locking member 13 can lock component 2 in that position, ensuring that component 2 will not move during disassembly, thereby guaranteeing the stability and reliability of the disassembly process.

[0072] In some embodiments, the fixing component 2 includes:

[0073] A fixed column 21 is inserted through the first slider 12. The lower end of the fixed column 21 is provided with a supporting structure 22 for supporting the upper side of the first cantilever structure 02 of the refrigeration crankcase 01.

[0074] The first locking member 13 includes a screw, and the first slider 12 is provided with a threaded hole 121. The screw passes through the threaded hole 121 and locks the fixing post 21 by the screw.

[0075] In this embodiment, the specific structure of the fixing component 2 includes a fixing post 21 and a supporting structure 22. The fixing post 21 passes through the first slider 12. This design allows the fixing post 21 to move up and down within the first slider 12, thereby adjusting the height of the fixing post 21 as needed to accommodate the first cantilever structure 02 at different heights. The lower end of the fixing post 21 is provided with a supporting structure 22, which is used to abut against the upper side of the first cantilever structure 02 of the refrigeration crankcase 01 to ensure the stability of the first cantilever structure 02 when the pin 04 is removed.

[0076] To lock the position of the fixing post 21, the first locking element 13 is in the form of a screw. The first slider 12 has a threaded hole 121, and the screw passes through the threaded hole 121. By tightening the screw, the fixing post 21 can be locked in the adjusted position, preventing the fixing post 21 from moving during disassembly. This locking method is not only easy to operate, but also provides a stable locking effect, ensuring the reliability of the fixing assembly 2 during disassembly.

[0077] In some embodiments, the abutment structure 22 is provided with an arcuate surface 221 for conforming to the upper side of the first cantilever structure 02 of the refrigeration crankcase 01.

[0078] In this embodiment, the key to this design lies in enhancing the stability of the fixation through shape matching. When the fixing component 2 abuts against the upper side of the first cantilever structure 02, the arc-shaped surface 221 can better conform to the surface of the first cantilever structure 02, thereby providing more uniform contact pressure, increasing friction, and preventing displacement or vibration of the first cantilever structure 02 during disassembly. This shape adaptation not only improves the fixing effect but also reduces local stress concentration that may be caused by shape mismatch, further protecting the first cantilever structure 02 from damage and ensuring the smooth progress of the disassembly process.

[0079] In some embodiments, the supporting structure 22 is provided with a pin-removing groove 222 for receiving the ejected pin 04.

[0080] In this embodiment, the design of the supporting structure 22 is further optimized, with the addition of a pin-removal groove 222. The ingenious aspect of this structure is that it provides a temporary storage space for the ejected pin 04. When the disassembly assembly 3 pushes the pin 04 upwards from the second cantilever structure 03 of the refrigeration unit crankcase 01, the pin-removal groove 222 can accommodate the ejected pin 04, preventing it from accidentally falling off or shifting during disassembly. This design not only ensures a smooth disassembly process but also improves the safety and convenience of operation, avoiding potential risks and additional cleaning work caused by the pin 04 accidentally falling off.

[0081] In some embodiments, disassembling the mounting bracket 1 includes:

[0082] Frame 11;

[0083] The second slider 14 is slidably disposed on the frame 11, and the second slider 14 can slide laterally along the frame 11;

[0084] The disassembly component 3 is located on the second slider 14.

[0085] In this embodiment, the structural design of the disassembly fixing frame 1 includes a frame body 11 and a second slider 14. The frame body 11 serves as the basic support for the entire disassembly fixture and is fixed to the crankcase 01 of the refrigeration unit, providing a stable mounting platform for the fixture. The second slider 14 is mounted on the frame body 11 and can slide laterally along the frame body 11. The key feature of this design is that it provides the disassembly assembly 3 with the function of adjusting its lateral position.

[0086] The disassembly assembly 3 is mounted on the second slider 14, meaning that its position on the refrigeration unit crankcase 01 can be adjusted by the lateral sliding of the second slider 14. This lateral adjustment function is crucial because it allows the operator to precisely adjust the position of the disassembly assembly 3 according to the specific location of the pin 04 and the disassembly requirements, ensuring that the disassembly assembly 3 can accurately apply force to the pin 04 from the underside of the second cantilever structure 03, thereby effectively pushing the pin 04 upward. This design significantly enhances the flexibility and adaptability of the disassembly assembly 3, further improving the overall performance and practicality of the disassembly fixture.

[0087] In some cases, the upper side of the frame 11 is provided with a guide rail, and the first slider 12 and the second slider 14 are slidably assembled in the guide rail.

[0088] In some embodiments, the disassembly component 3 includes:

[0089] A pull column 31 is inserted through the second slider 14, and the lower end of the pull column 31 is provided with a push structure 32 for pushing the push pin 04.

[0090] The first adjusting member 33 is connected to the pull column 31. The first adjusting member 33 is used to control the pull column 31 to move upward so as to push the pin 04 that passes through the first cantilever structure 02 and the second cantilever structure 03 upward.

[0091] In this embodiment, the structural design of the disassembly assembly 3 ensures that it can effectively perform the disassembly operation of the pin 04. Specifically, the disassembly assembly 3 includes a pull post 31 and a first adjusting member 33. The pull post 31 passes through the second slider 14. This design not only allows the pull post 31 to move up and down within the second slider 14, but also allows the position of the pull post 31 to be adjusted laterally so that the pull post 31 can be adjusted to a suitable position before operation, ensuring that the pushing structure 32 can be accurately aligned with the pin 04.

[0092] The lower end of the pull column 31 is provided with a pusher structure 32, which is specifically designed to push the pin 04, ensuring that the pin 04 can be accurately pushed out of the crankcase 01 of the refrigeration unit during disassembly. The key to this design is that through the contact between the pusher structure 32 and the pin 04, an upward force can be precisely applied, thereby achieving the smooth disassembly of the pin 04.

[0093] The first adjusting member 33 is connected to the pull column 31, and its function is to control the upward movement of the pull column 31. Through the action of the first adjusting member 33, the upward speed and force of the pull column 31 can be precisely controlled, ensuring that the pin 04 can be smoothly pushed out from the first cantilever structure 02 and the second cantilever structure 03. This design not only improves the efficiency of disassembly but also reduces the risk of damage to parts due to improper operation.

[0094] In summary, the design of the disassembly assembly 3, through the cooperation of the pull post 31 and the first adjusting member 33, enables the precise disassembly of the pin 04. The vertical movement and lateral adjustment function of the pull post 31, combined with the precise control of the first adjusting member 33, ensure the stability and reliability of the disassembly process.

[0095] In some embodiments, the pull column 31 is threaded, and the first adjusting member 33 includes a nut, which is fitted onto the pull column 31 and threadedly connected to the pull column 31. The pull column 31 is controlled to move upward by rotating the nut.

[0096] In this embodiment, the pull post 31 of the disassembly assembly 3 has a key feature: it is threaded. This design allows the first adjusting member 33, specifically a nut, to be fitted onto the pull post 31 and connected to it via a thread. This threaded connection design allows for precise control of the upward movement of the pull post 31 by rotating the nut.

[0097] In practice, the operator only needs to rotate the nut, and the threaded engagement between the nut and the pull post 31 will cause the pull post 31 to move upward along the thread direction. This rotational operation is not only simple and easy to perform, but also provides precise force control, ensuring that the pin 04 can be smoothly and accurately ejected. This design cleverly converts rotational motion into linear motion, achieving precise control over the disassembly process of the pin 04, and improving disassembly efficiency and reliability.

[0098] In some embodiments, the pusher structure 32 is provided with a pusher groove 321 for engaging with the lower end of the pin 04.

[0099] In this embodiment, the key to this design is that the pin 04 extends out from one side of the second cantilever structure 03, so the pusher groove 321 can be precisely fitted into the lower end of the pin 04. Through this fitting, the pusher structure 32 can stably contact the pin 04, ensuring that the pin 04 can be smoothly and accurately pushed out when the pusher structure 32 is raised.

[0100] The advantage of this design lies in its improved stability during disassembly and reduced risk of damage or displacement of the pin 04 due to poor contact. The pusher groove 321 matches the lower end shape of the pin 04, providing a better contact area and more uniform force distribution. This allows for more effective transmission of upward force during disassembly, ensuring the pin 04 is smoothly ejected from the refrigeration unit crankcase 01. In this way, the pusher structure 32 significantly improves disassembly efficiency and reliability while protecting parts from damage.

[0101] In some embodiments, disassembling the mounting bracket 1 includes:

[0102] Frame 11;

[0103] Mounting component 15 is provided on the frame 11 and is used to fix it on the crankcase 01 of the refrigeration unit.

[0104] In this embodiment, the structural design of the disassembly and fixing frame 1 is further refined, including the frame body 11 and the mounting component 15. The frame body 11 serves as the basic support part of the entire disassembly fixture, providing a stable platform for installing and fixing other components. The mounting component 15 is located on the frame body 11, and its main function is to firmly fix the disassembly and fixing frame 1 to the crankcase 01 of the refrigeration unit.

[0105] Mounting component 15 can take various forms, such as locating pins, studs, etc. These structures not only achieve precise positioning, ensuring the correct position of the disassembly bracket 1 on the refrigeration unit crankcase 01, but also provide a stable fixing effect through threaded fastening. Specifically, the locating pin ensures the precise alignment of the disassembly bracket 1 during installation, while the stud, through tightening the nut, firmly fixes the disassembly bracket 1 to the refrigeration unit crankcase 01, preventing displacement or vibration during disassembly.

[0106] This design not only provides stable support for the disassembly bracket 1, but also ensures it remains stationary throughout the disassembly process, thus guaranteeing the smooth removal of pin 04. This stability and reliability are key factors in ensuring a smooth disassembly process, helping to improve disassembly efficiency and reduce the risk of component damage due to unstable fixing.

[0107] In one specific implementation, the assembly process of the Stirling refrigeration unit pin disassembly fixture is described below.

[0108] First, place the first slider 12 and the second slider 14 into the frame 11. Then, insert the fixing post 21 and the pull post 31 respectively. For the fixing post 21, an anti-loosening nut can be screwed into the upper end to prevent it from falling off. Using the screw holes on the crankcase 01 of the refrigeration unit, use the mounting piece 15 to fix the disassembly fixing frame 1 to the crankcase 01 of the refrigeration unit.

[0109] Pull up the fixing post 21 and slowly lower it so that its arc surface 221 naturally fits into the first cantilever structure 02. Use a screw (first locking member 13) to screw into the threaded hole 121 of the first slider 12 so that the fixing post 21 and the first slider 12 do not move relative to each other.

[0110] Move the pull column 31 below the pin 04. The push structure 32 at the bottom of the pull column 31 is nested in the exposed part of the pin 04 through the push pin groove 321 to fix it. Tighten the nut (first adjusting member 33) above the pull column 31 to fix its position.

[0111] Tighten the nut (first adjusting part 33) above the pull column 31 clockwise to move the pull column 31 upward, applying force to the lower end of the pin 04. At the same time, the fixing column 21 fixes the first cantilever structure 02, keeping the whole structure stationary. At this time, only the pin 04 and the action structure have forces acting on each other in two directions; the other parts are not subjected to force. The holding structure 22 has a pin release groove 222. The pin 04 moves upward and enters the pin release groove 222. At this time, the adhesive surface between the pin 04 and the first cantilever structure 02 has moved relative to each other. After the pin 04 is released, the tooling can be removed to take out the pin 04.

[0112] It should be noted that many of the components mentioned in this application are general standard parts or components known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0113] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0114] The Stirling refrigerator pin disassembly fixture provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A pin dismounting tool for a stirling refrigerator, characterized in that, The utility model relates to a refrigeration machine crankshaft box dismounting device, comprising: a dismounting fixing frame for fixing on a refrigeration machine crankshaft box; a fixing assembly provided on the dismounting fixing frame, the fixing assembly being used for abutting against an upper side of a first cantilever structure of the refrigeration machine crankshaft box; a dismounting assembly provided on the dismounting fixing frame, the dismounting assembly being capable of moving up and down, and the dismounting assembly being used for applying force to a pin from a lower side of a second cantilever structure of the refrigeration machine crankshaft box to push the pin, which penetrates through the first cantilever structure and the second cantilever structure, upward.

2. A stirling engine pin removal tool as claimed in claim 1, characterised in that, The dismounting fixing frame comprises: a frame body for fixing on a refrigeration machine crankshaft box; a first sliding block slidingly provided on the frame body, the first sliding block being capable of sliding transversely along the frame body; wherein the fixing assembly is provided on the first sliding block.

3. A stirling engine pin removal tool as claimed in claim 2, characterised in that, The fixing assembly is capable of moving up and down, and the dismounting fixing frame further comprises: a first locking member for locking the position of the fixing assembly when the fixing assembly abuts against the upper side of the first cantilever structure of the refrigeration machine crankshaft box.

4. A stirling engine pin removal tool according to claim 3, characterised in that, The fixing assembly comprises: a fixing column penetrating through the first sliding block, a lower end of the fixing column being provided with an abutting structure for abutting against the upper side of the first cantilever structure of the refrigeration machine crankshaft box; wherein the first locking member comprises a screw, the first sliding block is provided with a threaded hole, the screw penetrating through the threaded hole, and the fixing column is locked by the screw.

5. A stirling engine pin removal tool according to claim 4, characterised in that, The abutting structure is provided with an arc surface for matching the upper side of the first cantilever structure of the refrigeration machine crankshaft box; and / or, the abutting structure is provided with a pin withdrawing groove for accommodating the ejected pin.

6. A stirling engine pin removal tool as claimed in claim 1, characterised in that, The dismounting fixing frame comprises: a frame body for fixing on a refrigeration machine crankshaft box; a second sliding block slidingly provided on the frame body, the second sliding block being capable of sliding transversely along the frame body; wherein the dismounting assembly is provided on the second sliding block.

7. A stirling engine pin removal tool according to claim 6, characterised in that, The dismounting assembly comprises: a pulling column penetrating through the second sliding block, a lower end of the pulling column being provided with a pushing structure for pushing the pin; a first adjusting member connected with the pulling column, the first adjusting member being used for controlling upward movement of the pulling column to push the pin, which penetrates through the first cantilever structure and the second cantilever structure, upward.

8. A stirling engine pin removal tool according to claim 7, characterised in that, The pulling column is provided with a thread, and the first adjusting member comprises a nut, the nut being sleeved on the pulling column, the nut being threadedly connected with the pulling column, and the upward movement of the pulling column being controlled by rotating the nut.

9. A stirling engine pin removal tool according to claim 7, characterised in that, The pushing structure is provided with a pin pushing groove for matching the lower end of the pin.

10. A stirling engine pin removal tool as claimed in claim 1, characterised in that, The dismounting fixing frame comprises: a frame body; a mounting member provided on the frame body, the mounting member being used for fixing on a refrigeration machine crankshaft box.

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