Adjustable interference fit disengaging device

Abstract

The utility model relates to the technical field of dismounting tools, in particular to an adjustable interference fit separation device. The device comprises a mounting piece and a female piece arranged at the tail end of the mounting piece in an interference fit mode, the back side of the female piece abuts against an adjustable clamping plate, the tail end of the mounting piece abuts against a tension lead screw through a fixing plate, the adjustable clamping plate and the fixing plate are parallel to each other, and a plurality of fixing lead screws with the same length are fixed to the adjustable clamping plate and the fixing plate at intervals; the tension lead screw is screwed by a certain distance relative to the fixing plate, the fixing plate drives the adjustable clamping plate to move in the axial direction of the installation piece, and the mother piece is disengaged in the axial direction of the installation piece. According to the detaching device, the female part is evenly stressed relative to the mounting part to achieve axial detaching through the detaching device located on the same side of the female part and the mounting part, the thin female part is prevented from deforming in the detaching process, and the detaching device is particularly suitable for detaching interference fit female parts with the shaft diameter larger than 50 mm.

Description

Technical Field

[0001] This utility model relates to the field of disassembly tooling technology, specifically to an adjustable interference fit release device. Background Technology

[0002] In the field of mechanical assembly and maintenance, the disassembly of interference-fit components is a common problem. To solve this problem, those skilled in the art have made numerous attempts. For example, the centrifugal pump impeller disassembly device disclosed in Chinese Patent Publication No. CN213290092U, by evenly adjusting the adjusting component, ensures that the impeller is subjected to uniform force around its circumference during disassembly, effectively avoiding impeller damage caused by uneven force. However, this solution has limitations. It is only applicable to the specific structure of centrifugal pump impellers, and is difficult to use for interference-fit female parts with large shaft diameters, especially thin metal female parts. Uneven force during the disassembly of such female parts can easily cause deformation. Because the displacement detection disc needs to be reused after disassembly, and its thickness is 10-16mm, it is extremely prone to deformation during disassembly. The flatness deviation of the displacement detection disc must not exceed 0.02mm, making it highly susceptible to deformation during disassembly. Therefore, further research is needed on tooling for the protective disassembly of the displacement detection disc of interference-fit centrifugal compressors. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an adjustable interference fit release device.

[0004] The technical solution adopted in this utility model is as follows:

[0005] An adjustable interference fit release device includes a mounting component and a female component with an interference fit at the end of the mounting component. An adjustable locking plate is abutting against the back side of the female component. A tension screw is abutting against the end of the mounting component via a fixing plate. The adjustable locking plate and the fixing plate are parallel to each other and fixed with a plurality of fixed screws of equal length at intervals. The tension screws are rotated a certain distance relative to the fixing plate, and the fixing plate drives the adjustable locking plate to move axially along the mounting component, causing the female component to release axially along the mounting component.

[0006] This technical solution utilizes a release device located on the same side of the female component and the mounting component to achieve axial separation by uniformly distributing the female component relative to the mounting component, thus preventing deformation of the thinner female component during disassembly. The release device is a rectangular frame consisting of an adjustable clamping plate that abuts against the back of the female component and a fixed plate that abuts against the end of the mounting component. The adjustable clamping plate and the fixed plate are kept parallel by four fixing screws. An external force is applied to the fixed plate and the mounting component using a screw-adjustable tension screw, while the adjustable clamping plate applies an outward force to the back of the female component. Because the external force is applied planarly, the female component experiences uniform force during separation from the mounting component, minimizing deformation. The adjustable clamping plate employs a split structure, using a left-right overlapping method for connection. The advantage of this two-layer structure is increased load-bearing capacity and adaptability to female components of different diameters, making it particularly suitable for disassembling various types of interference-fit female components with shaft diameters >50mm. It is safe, efficient, and widely applicable.

[0007] In addition, the adjustable interference fit release device proposed above according to this utility model may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the adjustable plate includes an adjustable plate I and an adjustable plate II. Both the adjustable plate I and the adjustable plate II are U-shaped, and the diameter of the U-shaped slots of the two is larger than the diameter of the mounting component. The two overlap left and right with the mounting component as the center to form a whole.

[0009] In this technical solution, the U-shaped slot has a large diameter, which can be used to allow the female part of the mounting part with a smaller diameter to detach by overlapping left and right. When the diameter of the female part is not large, the diameter of the overlapping U-shaped slot is sufficient, which also makes it easy to put the adjustable clamping plate directly from one end of the mounting part to the back plate of the female part, avoiding the back and forth assembly process.

[0010] According to one embodiment of the present invention, the four corners of the adjusting plate I are respectively provided with two elongated holes I and two fixing holes I, and the four corners of the adjusting plate II are respectively provided with two elongated holes II and two fixing holes II, wherein: the elongated holes I and the fixing holes II cooperate with each other, and the fixing holes I and the elongated holes II cooperate with each other; a spacer layer is provided between the fixing holes I and the fixing holes II.

[0011] In this technical solution, the purpose of using the elongated hole is to adjust the relative positions of adjusting plate I and adjusting plate II in conjunction with the adjusting screw. A fixing screw passes through the elongated hole, allowing the adjustable plates to maintain a constant spacing in the horizontal direction and finely adjust the degree of overlap in the vertical direction. This reduces the overlap area between the two U-shaped grooves, allowing the mother component to contact more of the adjustable plate area, thus ensuring that the mother component is evenly stressed.

[0012] According to one embodiment of the present invention, a nut is provided on each side of the U-shaped opening of the adjusting plate I. The nut cooperates with an adjusting screw perpendicular to the side of the adjusting plate I. The adjusting screw is screwed in a certain distance relative to the nut, and the end of the adjusting screw abuts against the spacer layer of the adjusting plate II, thereby pushing the adjusting plate II to adjust the spacing relative to the adjusting plate I.

[0013] In this technical solution, the purpose of the spacer layer is to allow the adjusting screws between the two to have a contact position; the spacer plates are located on one half of the adjusting plate I and the other half of the adjusting plate II, so that they overlap to form a relatively complete contact surface, allowing the mother plate to be evenly stressed.

[0014] According to one embodiment of the present invention, two elongated holes III and two fixing holes III are provided at the four corners of the fixing plate. Two fixing screws are arranged to pass through fixing hole I and elongated holes II and III in sequence. The other two fixing screws are arranged to pass through fixing hole II and elongated holes I and fixing holes III in sequence.

[0015] In this technical solution, since the fixed plate and the adjustable plate are parallel to each other, the spacing of the fixing screws on both sides of the adjustable plate is adjusted, and the spacing of the fixing screws on the fixed plate is also adjusted synchronously. The degree of adjustment is constrained by the length of the elongated hole.

[0016] According to one embodiment of the present invention, the back side of the female component is subjected to uniform force through an adjustable clamping plate to prevent deformation of the female component when it is detached.

[0017] In this technical solution, the mother part is a relatively thin metal part. Since a large external force is required to detach the mother part from the mounting part, and it is necessary to avoid deformation of the mother part as much as possible, it is necessary to control the overall force on the mother part. The adjustable plate provides a complete contact surface and makes back contact with the mother part. By using surface contact instead of point contact, the force on the mother part is more even.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] (1) The adjustable plate adopts a split structure and is connected by overlapping left and right sides. The two-layer structure increases the strength that can withstand the force and can adapt to the separation of mother parts of different diameters.

[0020] (2) Multiple elongated holes are provided to match the fixing holes. With the help of the adjusting screw, the relative position, spacing and overlap of the adjusting plates can be finely adjusted, so that the mother part can contact more adjustable plate areas and achieve more uniform force.

[0021] (3) By using a disengagement device located on the same side of the mother part and the mounting part, the mother part is subjected to uniform force relative to the mounting part to achieve axial disengagement, avoiding deformation of the thinner mother part during disassembly, which is especially suitable for disassembling interference fit mother parts with shaft diameter > 50mm. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of adjustment plate I.

[0024] Figure 3 This is a schematic diagram of the structure of adjustment plate II.

[0025] In the diagram: 1. Mounting component; 2. Female component; 3. Adjusting plate I; 4. Adjusting plate II; 5. Adjusting screw; 6. Fixing screw; 7. Fixing plate; 8. Tension screw. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] like Figure 1 As shown, this embodiment provides an adjustable interference fit release device, including a mounting component 1 and a female component 2 with an interference fit disposed at the end of the mounting component 1. An adjustable locking plate is abutting against the back side of the female component 2. A tension screw 8 is abutting against the end of the mounting component 1 through a fixing plate 7. The adjustable locking plate and the fixing plate 7 are parallel to each other and fixed with a plurality of fixing screws 6 of equal length at intervals. The tension screw 8 is screwed in a certain distance relative to the fixing plate 7, and the fixing plate 7 drives the adjustable locking plate to move along the axial direction of the mounting component 1, and the female component 2 is released along the axial direction of the mounting component 1.

[0029] This technical solution utilizes a detachment device located on the same side of the female component 2 and the mounting component 1 to achieve axial detachment of the female component 2 relative to the mounting component 1, thus preventing deformation of the thinner female component 2 during disassembly. The detachment device is a rectangular frame consisting of an adjustable clamping plate that abuts against the back of the female component 2 and a fixed plate 7 that abuts against the end of the mounting component 1. The adjustable clamping plate and the fixed plate 7 are kept parallel by four fixing screws 6. An external force is applied to the fixed plate 7 and the mounting component 1 using a screw-adjustable tension screw, while the adjustable clamping plate applies an outward detachment force to the back of the female component 2. Because the external force is applied planarly, the female component 2 experiences uniform force during detachment from the mounting component 1, minimizing deformation. The adjustable clamping plate employs a split structure, using a left-right overlapping method for connection. The advantage of this two-layer structure is increased load-bearing capacity and adaptability to detachment of female components 2 with different diameters, making it particularly suitable for disassembling various types of interference-fit female components 2 with shaft diameters > 50mm. It is safe, efficient, and widely applicable.

[0030] In addition, the adjustable interference fit release device proposed above according to this utility model may also have the following additional technical features:

[0031] like Figure 2 and Figure 3 As shown, the adjustable plate includes an adjustable plate I3 and an adjustable plate II4. Both the adjustable plate I3 and the adjustable plate II4 are U-shaped. The diameter of the U-shaped slots of the two is larger than the diameter of the mounting part 1. The two overlap left and right with the mounting part 1 as the center to form a whole.

[0032] In this technical solution, the U-shaped slot has a large diameter, which can be used to allow the smaller diameter mounting part 1 and the mother part 2 to detach by overlapping left and right. When the diameter of the mother part 2 is not large, the diameter of the overlapping U-shaped slot is sufficient, which also makes it easy to put the adjustable clamping plate directly from one end of the mounting part 1 to the back plate of the mother part 2, avoiding the back and forth assembly process.

[0033] According to one embodiment of the present invention, the four corners of the adjusting plate I3 are respectively provided with two elongated holes I and two fixing holes I, and the four corners of the adjusting plate II4 are respectively provided with two elongated holes II and two fixing holes II, wherein: the elongated holes I and the fixing holes II cooperate with each other, and the fixing holes I and the elongated holes II cooperate with each other; a spacer layer is provided between the fixing holes I and the fixing holes II.

[0034] In this technical solution, the purpose of using the elongated hole is to adjust the relative positions of the adjusting plate I3 and the adjusting plate II4 in conjunction with the adjusting screw 5. A fixing screw 6 passes through the elongated hole. The adjustable plates maintain a constant spacing in the horizontal direction, and the degree of overlap of the adjustable plates is finely adjusted in the vertical direction. This reduces the overlap area between the two U-shaped grooves, allowing the mother piece 2 to contact more of the adjustable plate area, thereby ensuring that the mother piece 2 is evenly stressed.

[0035] According to one embodiment of the present invention, a nut is provided on each side of the U-shaped opening of the adjusting plate I3. The nut cooperates with the adjusting screw 5 perpendicular to the side of the adjusting plate I3. The adjusting screw 5 is screwed in a certain distance relative to the nut, and the end of the adjusting screw 5 abuts against the spacer layer of the adjusting plate II4, pushing the adjusting plate II4 to adjust the spacing relative to the adjusting plate I3.

[0036] In this technical solution, the purpose of the spacer layer is to allow the adjusting screws 5 between the two to have a contact position; the spacer plates are located on one half of the adjusting plate I3 and the other half of the adjusting plate II4, so that they overlap to form a relatively complete contact surface, allowing the mother plate to be evenly stressed.

[0037] According to one embodiment of the present invention, the four corners of the fixing plate 7 are provided with two elongated holes III and two fixing holes III. Two fixing screws 6 are arranged to pass through the fixing hole I and the elongated holes II and III in sequence. The other two fixing screws 6 are arranged to pass through the fixing hole II and the elongated holes I and III in sequence.

[0038] In this technical solution, since the fixed plate 7 and the adjustable plate are parallel to each other, the spacing of the fixing screws 6 on both sides of the adjustable plate is adjusted, and the spacing of the fixing screws 6 on the fixed plate 7 is also adjusted synchronously. The degree of adjustment is constrained by the length of the elongated hole.

[0039] According to one embodiment of the present invention, the back side of the mother piece 2 is subjected to uniform force through an adjustable clamping plate to prevent the mother piece 2 from deforming when it is detached.

[0040] In this technical solution, the mother part 2 is a relatively thin metal part. Since a large external force is required to detach the mother part 2 from the mounting part 1, and it is necessary to avoid deformation of the mother part 2 as much as possible, it is necessary to control the overall force on the mother part 2. The adjustable plate provides a complete contact surface and makes back contact with the mother part 2. By using surface contact instead of point contact, the force on the mother part 2 is more even.

[0041] The usage process of the above embodiments is as follows: Figures 1 to 3As shown, firstly, based on the diameter of the mother part 2, the overlap of the adjusting plate I 3 and adjusting plate II 4 is increased through the elongated hole and the adjusting screw 5, so that the adjustable plate can be slipped over the mother part 2. The adjustable plate is then slipped from one end of the mounting part 1 to the back plate of the mother part 2, and the adjusting screw 5 is rotated in the opposite direction to reduce the overlap, so that the mother part 2 contacts more of the adjustable plate area. Then, the tension screw 8 is screwed in so that it contacts the end of the mounting part 1. After that, as the distance between the tension screw 8 and the mounting part 1 is further reduced, an interaction force is generated between the fixing plate 7 and the mounting part 1. The adjustable plate applies an outward force to the mother part 2, ultimately causing the mother part 2 to be evenly stressed and detached along the axial direction of the mounting part 1, avoiding deformation of the thinner mother part 2 due to uneven stress, thus completing the disassembly work.

[0042] Adjusting plate I3 and adjusting plate II4 are reset to their overlapping degree by adjusting screw 5, and tension screw 8 is turned outward to its original position to facilitate disengagement from the next female part 2.

[0043] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. An adjustable interference fit release device, comprising a mounting member (1) and a female member (2) with an interference fit disposed at the end of the mounting member (1), characterized in that, An adjustable locking plate is provided on the back side of the female part (2), and a tension screw (8) is provided at the end of the mounting part (1) through the fixing plate (7). The adjustable locking plate and the fixing plate (7) are parallel to each other and fixed with several fixed screws (6) of equal length at intervals. The tension screw (8) is screwed in a certain distance relative to the fixing plate (7), and the fixing plate (7) drives the adjustable locking plate to move along the axial direction of the mounting part (1), and the female part (2) is disengaged along the axial direction of the mounting part (1).

2. The adjustable interference fit release device as described in claim 1, characterized in that, The adjustable plate includes an adjustable plate I (3) and an adjustable plate II (4). Both the adjustable plate I (3) and the adjustable plate II (4) are U-shaped. The diameter of the U-shaped slot of both is larger than the diameter of the mounting part (1). The two overlap left and right with the mounting part (1) as the center to form a whole.

3. The adjustable interference fit release device as described in claim 2, characterized in that, The four corners of the adjusting plate I (3) are respectively provided with two elongated holes I and two fixed holes I, and the four corners of the adjusting plate II (4) are respectively provided with two elongated holes II and two fixed holes II, wherein: the elongated holes I and the fixed holes II are matched, and the fixed holes I and the elongated holes II are matched; a spacer layer is provided between the fixed holes I and the fixed holes II.

4. The adjustable interference fit release device as described in claim 2, characterized in that, A nut is provided on each side of the U-shaped opening of the adjusting plate I (3). The nut cooperates with the adjusting screw (5) perpendicular to the side of the adjusting plate I (3). The adjusting screw (5) is screwed in a certain distance relative to the nut. The end of the adjusting screw (5) abuts against the spacer layer of the adjusting plate II (4) and pushes the adjusting plate II (4) to adjust the spacing relative to the adjusting plate I (3).

5. The adjustable interference fit release device as described in claim 3, characterized in that, The fixing plate (7) has two elongated holes III and two fixing holes III at its four corners. Two fixing screws (6) pass through the fixing hole I and the elongated holes II and III in sequence. The other two fixing screws (6) pass through the fixing hole II and the elongated holes I and III in sequence.

6. The adjustable interference fit release device as described in claim 1, characterized in that, The back side of the mother piece (2) is evenly stressed by an adjustable clamping plate to prevent deformation of the mother piece (2) when it is detached.

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