Pin dismounting device

Abstract

The utility model belongs to pin dismounting and mounting technical field discloses pin dismounting and mounting device, when the pin on the part is dismounted and mounted, the pin to be dismounted is fixed to the pressure head through the locking unit, then the force applying piece is controlled to move repeatedly along the preset direction, the force applying piece can be pressed to the dismounting rod along the first direction every time, the inertia force produced by the force applying piece pressed to the dismounting rod along the first direction makes the pin come out of the pin hole. The pin dismounting mode is simple, saves the labor, and the direction of the acting force applied to the dismounting rod during the dismounting process is the preset direction, the pin and the pin hole of the mounted pin are not easy to be damaged.

Description

Technical Field

[0001] This utility model relates to the field of pin assembly and disassembly technology, and in particular to a pin assembly and disassembly device. Background Technology

[0002] Cylindrical pins are typically fixed in pin holes using an interference fit. They are used not only to secure connecting parts but also to transmit power and provide positioning. Specifically, the cylindrical pin is aligned with the pin hole, and a tool is used to tap the top of the pin to drive it into the hole.

[0003] Because the cylindrical pin is fixed in the pin hole with an interference fit, it is difficult to disassemble. At present, a pin-pulling device is generally used to help remove the cylindrical pin. Specifically, after clamping the cylindrical pin with pliers, it is shaken repeatedly until the cylindrical pin is loosened and then pulled out.

[0004] The above method of disassembling the cylindrical pin has the following problems: disassembling the cylindrical pin is laborious, and the cylindrical pin and the pin hole where the cylindrical pin is installed are easily damaged during the repeated shaking of the cylindrical pin. Utility Model Content

[0005] The purpose of this utility model is to provide a pin disassembly and assembly device to solve the problems of difficult disassembly and easy damage to the pin and the pin hole on the part when disassembling the pin.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Pin removal and assembly device, including:

[0008] Support frame;

[0009] The assembly / disassembly assembly includes an assembly / disassembly rod movably inserted through the support frame in a preset direction, a pressure head connected to the assembly / disassembly rod, and a locking unit capable of fixing the pin to be assembled / disassembled to the pressure head. The preset direction is the axial direction of the assembly / disassembly rod, and the assembly / disassembly rod is connected to a stop.

[0010] A force-applying component is sleeved outside the disassembly / assembly rod. The force-applying component is movably connected to the support frame along the preset direction so that the force-applying component can press against the stop portion along a first direction. The first direction is parallel to the preset direction and is the direction that causes the pin to be disassembled / assembled to disengage from the pin hole.

[0011] As one possible implementation of the aforementioned pin removal and installation device, the pressure head is provided with an installation groove, and the pin removal and installation device further includes a base connected to the support frame, the base and the support frame being distributed along the first direction; the base is provided with:

[0012] Positioning holes are used to insert pins to be disassembled or assembled, and the positioning holes and the mounting grooves are arranged facing each other along a preset direction;

[0013] An observation hole is provided through the base along the preset direction. One end of the observation hole extends through the inner wall of the positioning hole, and the other end extends through the outer peripheral surface of the base.

[0014] As one possible implementation of the aforementioned pin disassembly and assembly device, the pressure head can press against the base;

[0015] And / or, an elastic element is sandwiched between the support frame and the stop portion, the elastic element being able to make the maximum distance between the pressure head and the base greater than the axial length of the pin to be disassembled along the preset direction.

[0016] As one possible implementation of the above-mentioned pin disassembly and assembly device, the disassembly and assembly assembly further includes a limiting member that is adjustablely connected to the disassembly and assembly rod along the preset direction, and an elastic member that is limited between the support frame and the limiting member along the preset direction. The disassembly and assembly rod is provided with a first critical position and a second critical position that are spaced apart along a first direction.

[0017] When the limiting member is located at the first critical position, the elastic member is in a compressed state, so that the pressure head can be kept in a preset position. When the pressure head is in the preset position, the maximum distance between the pressure head and the base is greater than the axial length of the pin to be disassembled.

[0018] When the limiting member is in the second critical position, the pressure head can press against the base under the weight of the disassembly and assembly assembly.

[0019] As one possible implementation of the aforementioned pin disassembly and assembly device, the limiting member is sleeved outside the disassembly and assembly rod and threadedly connected to the disassembly and assembly rod.

[0020] As one possible implementation of the above-mentioned pin disassembly and assembly device, the pressure head is provided with at least two, and at least one of the pressure heads is detachably connected to the disassembly and assembly rod; the groove depth of the mounting groove of the different pressure heads is different, and / or the opening shape and / or opening size of the mounting groove of the at least two pressure heads are different;

[0021] And / or, the pin removal and installation device further includes N gaskets, where N is greater than or equal to 1, and the pin to be removed or installed can be selectively pressed directly against the bottom wall of the mounting groove, or at least one of the N gaskets can be pressed against the bottom wall of the mounting groove.

[0022] As one possible implementation of the aforementioned pin assembly / disassembly device, the inner peripheral wall of the mounting groove and the end face of the pressure head facing the base are connected by a chamfered surface.

[0023] As one possible implementation of the aforementioned pin disassembly and assembly device, the pressure head is adjustable relative to the disassembly and assembly rod along the preset direction.

[0024] As one possible implementation of the aforementioned pin disassembly and assembly device, the pressure head is threadedly connected to the disassembly and assembly rod.

[0025] As one possible implementation of the aforementioned pin assembly / disassembly device, one of the support frame and the force-applying component is provided with a guide groove, and the other is provided with a guide portion, the guide portion being movably inserted into the guide groove along the preset direction.

[0026] As one possible implementation of the aforementioned pin assembly / disassembly device, the force-applying component includes a body movably connected to the support frame along the preset direction, and an operating part protruding from the outer peripheral wall of the body.

[0027] As one possible implementation of the above-mentioned pin disassembly and assembly device, the end face of the operating part facing the stop part and the end face of the body facing the stop part are flush and form a force-applying surface, and the force-applying surface can press against the stop part in a first direction.

[0028] The beneficial effects of this utility model are:

[0029] The pin disassembly and assembly device provided by this utility model, when disassembling a pin installed on a part, fixes the pin to be disassembled to the pressure head through a locking unit, and then controls the force-applying component to move repeatedly in a preset direction, so that the force-applying component can press against the disassembly and assembly rod in the first direction each time. The inertial force generated by the force-applying component pressing against the disassembly and assembly rod in the first direction causes the pin to come out of the pin hole.

[0030] The pin is easy and labor-saving to disassemble, and the force applied to the disassembly rod during disassembly is in the preset direction, so the pin and the pin hole for installing the pin are not easily damaged. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the pin disassembly and assembly device provided in this embodiment of the utility model;

[0032] Figure 2 This is a cross-sectional view of the pin disassembly and assembly device (limiting member not shown) provided in an embodiment of this utility model.

[0033] In the picture:

[0034] 1. Support frame; 11. Support plate; 12. Support rod;

[0035] 21. Disassembly / removal rod; 22. Pressure head; 221. Mounting groove; 23. Locking component; 24. Limiting component; 25. Stop; 26. Locking bolt;

[0036] 3. Force-applying component; 31. Body; 311. Guide section; 32. Operating section; 33. Force-applying surface;

[0037] 4. Base; 41. Observation hole;

[0038] 5. Elastic components;

[0039] 100. Cylindrical pin. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] This utility model provides a pin disassembly and assembly device for installing and removing pins, solving the problems of laborious disassembly and easy damage to the pin and the pin hole on the part. This pin disassembly and assembly device is a manual pin disassembly device, suitable for disassembling and assembling small-diameter cylindrical pins. The force required for disassembling and assembling small-diameter pins that have an interference fit with the pin hole on the part is small; therefore, this pin disassembly and assembly device is suitable for small-diameter pins with an interference fit with the pin hole on the part, such as pins with a diameter of 20mm or less. The following description uses the disassembly and assembly of cylindrical pins as an example. It should be noted that in the embodiments of this utility model, the preset direction is the vertical direction, and the first direction is the upward direction.

[0045] like Figure 1 and Figure 2 As shown, this utility model provides a pin disassembly and assembly device, including a support frame 1, a disassembly and assembly assembly, and a force-applying component 3. The disassembly and assembly assembly includes a disassembly and assembly rod 21, a pressure head 22, and a locking unit. The disassembly and assembly rod 21 is movably inserted through the support frame 1 in a preset direction, which is the axial direction of the disassembly and assembly rod 21. The disassembly and assembly rod 21 is connected to a stop part 25. The pressure head 22 is connected to the disassembly and assembly rod 21, and the locking unit can fix the cylindrical pin 100 to be disassembled and assembled to the pressure head 22. The force-applying component 3 is sleeved outside the disassembly and assembly rod 21 and is movably connected to the support frame 1 in a preset direction. The force-applying component 3 can press against the stop part 25 in a first direction, which is parallel to the preset direction and is the direction that causes the cylindrical pin 100 to be disassembled and assembled to disengage from the pin hole.

[0046] When disassembling the cylindrical pin 100 installed on the part, the cylindrical pin 100 to be disassembled is fixed to the pressure head 22 by the locking unit. Then, the force-applying member 3 is controlled to move repeatedly in a preset direction so that the force-applying member 3 can press against the disassembly rod 21 in the first direction each time. The inertial force generated by the force-applying member 3 pressing against the disassembly rod 21 in the first direction causes the cylindrical pin 100 to come out of the pin hole.

[0047] The cylindrical pin 100 is easy and labor-saving to disassemble. Moreover, the force applied to the disassembly rod 21 during disassembly is in the preset direction, so the cylindrical pin 100 and the pin hole for installing the cylindrical pin 100 are not easily damaged.

[0048] In some embodiments, such as Figure 1 and Figure 2 As shown, one of the support frame 1 and the force-applying component 3 is provided with a guide groove, and the other is provided with a guide portion 311. The guide portion 311 is movably inserted into the guide groove in a preset direction. The cooperation of the guide groove and the guide portion 311 guides the movement of the force-applying component 3 in the preset direction, so that the force applied by the force-applying component 3 to the stop portion 25 is as far along the preset direction as possible, thereby reducing the probability of damage to the cylindrical pin 100 and the pin hole for installing the cylindrical pin 100 when disassembling the cylindrical pin 100.

[0049] In some embodiments, such as Figure 1 and Figure 2 As shown, the force-applying component 3 includes a body 31 movably connected to the support frame 1 along a preset direction, and an operating part 32 protruding from the outer peripheral wall of the body 31. The operating part 32 protrudes from the outer peripheral wall of the body 31, allowing the assembly / disassembly personnel to place their hand under the operating part 32 and push it upwards to strike the stop part 25; then, the force applied to the operating part 32 is released, allowing it to descend under gravity, and the above operation is repeated. By providing the operating part 32, the assembly / disassembly personnel can easily control the repeated raising and lowering of the operating part 32.

[0050] In some embodiments, such as Figure 1 and Figure 2 As shown, the end face of the operating part 32 facing the stop part 25 and the end face of the body 31 facing the stop part 25 are flush and form a force-applying surface 33, which can press against the stop part 25 in the first direction.

[0051] When the force-applying member 3 slides up and down, the force-applying surface 33 repeatedly impacts the stop part 25. By limiting the end face of the operating part 32 facing the stop part 25 and the end face of the body 31 facing the stop part 25 to be flush and forming the force-applying surface 33, the contact area between the force-applying surface 33 and the stop part 25 can be increased, making the stop part 25 more evenly stressed and extending the service life of the stop part 25.

[0052] For example, the guide groove is an annular groove provided on the top surface of the support frame 1, the force-applying member 3 is a sleeve structure with a flange, the sleeve structure forms a body 31, the lower end of the body 31 forms a guide portion 311, and the flange of the sleeve structure forms an operating portion 32.

[0053] In some embodiments, such as Figure 1 and Figure 2 As shown, the pressure head 22 is provided with a mounting groove 221 for accommodating the end of the cylindrical pin 100. The locking unit includes a locking member 23. One end of the locking member 23 extends into the mounting groove 221 along a second direction and the length of the extension into the mounting groove 221 is adjustable. The second direction is perpendicular to the preset direction.

[0054] Specifically, the pressure head 22 is provided with a through hole extending in the second direction. One end of the through hole penetrates to the outer peripheral surface of the pressure head 22, and the other end penetrates to the inner wall surface of the mounting groove 221. The through hole is threadedly connected to the locking member 23. For example, the pressure head 22 is a disc structure, the second direction is the radial direction of the pressure head 22, and the locking member 23 is a bolt.

[0055] Before disassembling the cylindrical pin 100, the locking member 23 is screwed out of the mounting groove 221. Then, the upper end of the cylindrical pin 100 to be disassembled is inserted into the mounting groove 221, and the locking member 23 is screwed in again, so that one end of the locking member 23 extends into the mounting groove 221 to press against the outer circumferential surface of the cylindrical pin 100, thereby fixing the cylindrical pin 100 to the pressure head 22. When the pressure head 22 is pulled upward by the disassembly rod 21, the cylindrical pin 100 will move upward with the pressure head 22, thereby disengaging the cylindrical pin 100 from the pin hole on the part.

[0056] As an alternative, the locking unit can also employ other structures, such as a locking unit comprising a locking element and a driving element. The locking element 23 is slidably inserted into the through hole along the second direction. The driving element can be an electromagnetic drive structure, which drives the locking element 23 to move along the second direction, so that one end of the locking element 23 extends into the mounting groove 221 and the length of the extension into the mounting groove 221 is adjustable. For example, when the electromagnetic drive structure is de-energized, the length of the locking element 23 extending into the mounting groove 221 shortens; when the electromagnetic drive structure is energized, the length of the locking element 23 extending into the mounting groove 221 increases. By controlling the current of the electromagnetic drive structure, the force exerted by the locking element 23 against the outer circumference of the cylindrical pin 100 can be made sufficiently large, such that the frictional resistance between the cylindrical pin 100 and the locking element 23 is greater than the frictional resistance between the cylindrical pin 100 and the pin hole on the part, thereby ensuring that when the pressure head 22 moves upward, the cylindrical pin 100 moves upward along with the pressure head 22.

[0057] As an alternative, since conventional cylindrical pins 100 are mostly made of No. 35 steel or No. 45 steel, which are ferromagnetic materials, a fixing groove can be opened on the bottom wall of the mounting groove 221, and an electromagnet can be fixed in the fixing groove to attract the cylindrical pin 100 to be disassembled.

[0058] In some embodiments, such as Figure 1 and Figure 2 As shown, the inner diameter of the mounting groove 221 is larger than the outer diameter of the cylindrical pin 100 to be disassembled, which makes it easier to insert the upper end of the cylindrical pin 100 into the mounting groove 221.

[0059] In some embodiments, such as Figure 1 and Figure 2As shown, at least two locking members 23 are provided, and the at least two locking members 23 are arranged circumferentially around the mounting groove 221. Exemplarily, three locking members 23 are provided, and the three locking members 23 are arranged circumferentially at equal intervals around the mounting groove 221. This helps to keep the cylindrical pin 100 to be disassembled vertical and prevents uneven local force applied to the cylindrical pin 100 by the locking members 23 during the upward movement of the cylindrical pin 100 to disengage from the pin hole on the part, which would result in greater local wear on both the cylindrical pin 100 and the pin hole on the part.

[0060] In some embodiments, such as Figure 1 and Figure 2 As shown, the support frame 1 is provided with a positioning hole for inserting the cylindrical pin 100 to be disassembled; the pin disassembly and assembly device also includes a base 4 connected to the support frame 1. The base 4 and the support frame 1 are distributed along a first direction. The base 4 is provided with a positioning hole and an observation hole 41. The positioning hole is used for inserting the cylindrical pin 100 to be disassembled. The positioning hole and the mounting groove 221 are arranged opposite each other along a preset direction. The observation hole 41 is set through the base 4 along the preset direction. One end of the observation hole 41 extends through the inner wall of the positioning hole, and the other end extends through the outer peripheral surface of the base 4.

[0061] For example, the support frame 1 includes a support plate 11 and a plurality of circumferentially spaced support rods 12. One end of the support rod 12 is connected to the support plate 11 and the other end is connected to the base 4. The plurality of support rods 12 surround the positioning hole, and the observation hole 41 is located between two adjacent support rods 12 to avoid the support rods 12 from blocking the observation hole 41.

[0062] Before installing the cylindrical pin 100, observe through the observation hole 41 whether the positioning hole is aligned with the pin hole on the part. After the positioning hole is aligned with the pin hole, hold the support frame 1 with one hand and insert the lower end of the cylindrical pin 100 into the positioning hole with the other hand, and align the lower end of the cylindrical pin 100 with the pin hole on the part. Tap the disassembly rod 21 downwards, so that the disassembly rod 21 pushes the pressure head 22 to move downwards, so that the pressure head 22 presses down on the top surface of the cylindrical pin 100. By repeatedly tapping the disassembly rod 21 downwards, the cylindrical pin 100 can be installed into the pin hole on the part.

[0063] During this process, since the disassembly rod 21 passes through the support frame 1, the support frame 1 can guide the disassembly rod 21, which helps to improve the verticality of the disassembly rod 21 during downward movement; during the downward pressing of the cylindrical pin 100, the positioning hole can also position the cylindrical pin 100, so that the cylindrical pin 100 is always aligned with the pin hole on the part.

[0064] In some embodiments, such as Figure 1 and Figure 2As shown, the pressure head 22 can press against the base 4 in the opposite direction of the first direction. During the pressing and disassembly of the rod 21, observe in real time whether the pressure head 22 is pressing against the base 4 in the opposite direction of the first direction. Once the pressure head 22 is pressing against the base 4 in the opposite direction of the first direction, it indicates that the cylindrical pin 100 is installed in place.

[0065] In some embodiments, such as Figure 1 and Figure 2 As shown, an elastic element 5 is sandwiched between the support frame 1 and the stop portion 25. The elastic element 5 enables the maximum distance between the pressure head 22 and the base 4 to be greater than the axial length of the cylindrical pin 100 to be disassembled along a preset direction. For ease of understanding, the position of the pressure head 22 when the maximum distance between the pressure head 22 and the base 4 is greater than the axial length of the cylindrical pin 100 to be disassembled is recorded as the preset position.

[0066] Before installing the cylindrical pin 100, the elastic element 5 is used to keep the pressure head 22 in a preset position, so that the lower end of the cylindrical pin 100 to be installed can be inserted into the positioning hole through the gap between the pressure head 22 and the base 4, thus avoiding interference from the pressure head 22 in the insertion of the cylindrical pin 100 into the positioning hole.

[0067] Before disassembling the cylindrical pin 100, control the disassembly rod 21 to move and switch the pressure head 22 to a preset position. Then, control the disassembly rod 21 to move down so that the upper end of the cylindrical pin 100 to be disassembled is inserted into the mounting groove 221, which makes it easy to lock the cylindrical pin 100 and the pressure head 22 through the locking unit.

[0068] For example, the elastic element 5 is a spring sleeved outside the disassembly rod 21, and the elastic element 5 passes through the force-applying element 3 to prevent the elastic element 5 from affecting the movement of the force-applying element 3 in a preset direction.

[0069] In some embodiments, such as Figure 1 and Figure 2 As shown, the disassembly and assembly assembly also includes a limiting member 24, which is adjustablely connected to the disassembly and assembly rod 21 along a preset direction. The elastic member 5 is limited between the support frame 1 and the limiting member 24 along the preset direction. The disassembly and assembly rod 21 has a first critical position and a second critical position distributed at intervals along a first direction. When the limiting member 24 is in the first critical position, the elastic member 5 is in a compressed state, so that the pressure head 22 can be kept in the preset position. When the limiting member 24 is in the second critical position, the pressure head 22 can press against the base 4 under the weight of the disassembly and assembly assembly.

[0070] When the limiting member 24 is adjusted to the first critical position on the disassembly rod 21, the elastic member 5 is compressed, and the limiting member 24 can apply an upward force to the limiting member 24, so that the disassembly assembly overcomes the influence of its own weight, the frictional resistance between the disassembly rod 21 and the support frame 1, and keeps the pressure head 22 in the preset position.

[0071] When installing the cylindrical pin 100, the locking member 23 exits the mounting groove 221 to prevent the locking member 23 from fixing the cylindrical pin 100 to the pressure head 22, which would cause a deviation between the position of the cylindrical pin 100 and the pin hole on the part.

[0072] Before inserting the lower end of the cylindrical pin 100 into the positioning hole, adjust the position of the limiting member 24 so that the limiting member 24 moves upward relative to the disassembly rod 21, that is, the limiting member 24 moves away from the elastic member 5, so that the force exerted by the elastic member 5 on the disassembly rod 21 through the limiting member 24 decreases continuously. During this process, the disassembly rod 21 descends under its own gravity until the limiting member 24 moves to the second critical position.

[0073] After moving the limiting member 24 to the second critical position, manually lift the stop 25 to raise the disassembly rod 21 to the preset position. Then, insert the lower end of the cylindrical pin 100 into the positioning hole, release the stop 25, and the pressure head 22 will fall under the weight of the disassembly assembly until the upper end of the cylindrical pin 100 is inserted into the mounting groove 221 and presses upward against the bottom wall of the mounting groove 221. Then, tap the disassembly rod 21 downward to install the cylindrical pin 100 until the pressure head 22 presses downward against the base 4, thus completing the installation of the cylindrical pin 100.

[0074] When installing the cylindrical pin 100, before the lower end of the cylindrical pin 100 is inserted into the positioning hole, during the process of the disassembly rod 21 moving from the preset position to the position where the pressure head 22 presses against the base 4, the elastic element 5 is always in a natural state, that is, the limiting element 24 is always spaced apart from the elastic element 5, or the elastic element 5 switches from the natural state to the compressed state, and the elastic force provided by the compressed elastic element 5 is small, which is insufficient to make the disassembly assembly overcome its own weight and the frictional resistance between the disassembly rod 21 and the support frame 1 to move upward. This allows the disassembly rod 21 to move from a preset position to the position where the pressure head 22 presses down against the base 4 after the lower end of the cylindrical pin 100 is inserted into the positioning hole. Once the bottom wall of the mounting groove 221 presses down against the cylindrical pin 100, the bottom wall of the mounting groove 221 will remain in contact with the cylindrical pin 100 under the weight of the disassembly assembly. This prevents the elastic element 5 from separating the bottom wall of the mounting groove 221 from the cylindrical pin 100 after each tap and before the next tap, thus affecting the installation of the cylindrical pin 100.

[0075] When disassembling the cylindrical pin 100, the limiting member 24 is first adjusted to the second critical position, so that the disassembly and assembly components descend under their own gravity until the upper end of the cylindrical pin 100 to be disassembled presses against the bottom wall of the mounting groove 221. Then, the cylindrical pin 100 to be disassembled is fixed to the pressure head 22 by the locking unit. After that, the position of the limiting member 24 is adjusted to the first critical position, so that the elastic member 5 is compressed and clamped between the limiting member 24 and the support frame 1. Then, the force-applying member 3 is moved up and down repeatedly. Each time, the force-applying member 3 can press against the disassembly and assembly rod 21 in the first direction. Using the inertial force generated by the force-applying member 3 pressing against the disassembly and assembly rod 21 in the first direction, the cylindrical pin 100 is dislodged from the pin hole. During the process of using the inertial force generated by the force-applying component 3 pressing against the disassembly rod 21 in the first direction to dislodge the cylindrical pin 100 from the pin hole, the elastic component 5 is compressed. The upward force exerted by the elastic component 5 on the limiting component 24 plays an auxiliary role, which can reduce the speed at which the disassembly and assembly personnel control the up and down movement of the force-applying component 3, thereby reducing the inertial force of the force-applying component 3 hitting the stop part 25 and extending the service life of the force-applying component 3 and the disassembly rod 21.

[0076] Specifically, the limiting member 24 is sleeved on the outside of the disassembly rod 21 and threadedly connected to the disassembly rod 21. For example, the limiting member 24 is a nut, and it is located between the stop portion 25 and the force-applying member 3 along a preset direction. By screwing the limiting member 24, the position of the limiting member 24 along the preset direction is adjusted, thereby adjusting the upward force applied to the limiting member 24 by the elastic member 5.

[0077] As an alternative, a threaded hole extending radially along the disassembly rod 21 can be made in the limiting member 24. The limiting member 24 is then fitted onto the disassembly rod 21 and connected to the threaded hole by a fastener. By tightening the fastener, one end of the fastener presses against the outer wall of the disassembly rod 21, thereby fixing the limiting member 24 to the disassembly rod 21. When it is necessary to adjust the position of the limiting member 24 in a preset direction, simply loosen the fastener.

[0078] To prevent the limiting member 24 from affecting the lifting and lowering of the force-applying member 3, the limiting member 24 can enter and exit the inner hole of the force-applying member 3. Specifically, the inner diameter of the force-applying member 3 is larger than the outer diameter of the limiting member 24.

[0079] For the same pressure head 22, the distance between the preset position and the position where the pressure head 22 presses against the base 4 is fixed, and the corresponding pressing depth is also fixed. Since the pressing depth requirement for the cylindrical pin 100 varies when it is inserted into the pin holes on different parts, in some embodiments, at least two pressure heads 22 are provided, and one of these pressure heads 22 is detachably connected to the disassembly rod 21. The mounting grooves 221 on different pressure heads 22 have different depths along a preset direction. The corresponding pressure head 22 can be selected according to the required pressing depth to meet the pressing depth requirement. For example, at least two locking bolts 26 arranged circumferentially on the pressure head 22 are connected to the disassembly rod 21, making the disassembly and assembly of the pressure head 22 convenient and quick.

[0080] As an alternative, N gaskets, where N is greater than or equal to 1, can be provided so that the cylindrical pin 100 to be disassembled can be selectively pressed directly against the bottom wall of the mounting groove 221, or at least one of the N gaskets can be pressed against the bottom wall of the mounting groove 221.

[0081] Depending on the required pressing depth, one option is to directly press the cylindrical pin 100 to be disassembled against the bottom wall of the mounting groove 221 without using a shim; another option is to set a shim on the bottom wall of the mounting groove 221, using different numbers of shims or shims of different thicknesses, and clamp the shims between the cylindrical pin 100 to be disassembled and the bottom wall of the mounting groove 221 to adjust the maximum distance between the pressing head 22 and the base 4 in a preset direction when the pressing head 22 is in a preset position, thereby adjusting the pressing depth.

[0082] As an alternative, the pressure head 22 can be adjusted relative to the disassembly rod 21 along a preset direction to adjust the maximum distance between the pressure head 22 and the base 4 along the preset direction, thereby adjusting the pressure pin depth. Specifically, the pressure head 22 is threadedly connected to the disassembly rod 21.

[0083] In some embodiments, when N is greater than or equal to 2, all N gaskets have the same thickness, or at least two of the N gaskets have different thicknesses. The total required gasket thickness can be determined based on needs, and gaskets can be selected based on this total thickness.

[0084] Since different parts may require cylindrical pins 100 of different diameters or with different end shapes, in some embodiments, the opening shapes and / or opening sizes of the mounting grooves 221 of at least two pressure heads 22 are different. For pressure heads 22 used to disassemble cylindrical pins 100, the inner diameters of the mounting grooves 221 of different pressure heads 22 are different, and the pressure head 22 can be selected according to the diameter of the cylindrical pin 100 to be disassembled or assembled. It should be noted that the end face of other types of pins that can abut against the bottom wall of the mounting groove 221 may be round or polygonal, etc.

[0085] In some embodiments, the inner peripheral wall of the mounting groove 221 and the end face of the pressure head 22 facing the base 4 are connected by a chamfered surface. The chamfered surface guides the cylindrical pin 100, facilitating the entry of the upper end of the cylindrical pin 100 into the mounting groove 221. It should be noted that the chamfered surface refers to the surface formed by a chamfer at the outlet end of the mounting groove 221; this chamfered surface can be an inclined plane or a conical surface.

[0086] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pin disassembly and assembly device, characterized in that, include: Support frame (1); The assembly and disassembly assembly includes an assembly and disassembly rod (21) that is movably inserted through the support frame (1) in a preset direction, a pressure head (22) connected to the assembly and disassembly rod (21), and a locking unit that can fix the pin to be disassembled or assembled to the pressure head (22). The preset direction is the axial direction of the assembly and disassembly rod (21), and the assembly and disassembly rod (21) is connected to a stop (25). Force-applying component (3) is sleeved outside the disassembly rod (21). The force-applying component (3) is movably connected to the support frame (1) along the preset direction. The force-applying component (3) can press against the stop part (25) along the first direction. The first direction is parallel to the preset direction and is the direction that causes the pin to be disassembled to disengage from the pin hole.

2. The pin disassembly and assembly device according to claim 1, characterized in that, The pressure head (22) is provided with a mounting groove (221) for receiving the end of the pin. The pin disassembly and assembly device also includes a base (4) connected to the support frame (1). The base (4) and the support frame (1) are distributed along the first direction. The base (4) is provided with: Positioning hole, the positioning hole is used to insert the pin to be disassembled, the positioning hole and the mounting groove (221) are arranged opposite each other in a preset direction; An observation hole (41) is provided through the base (4) along the preset direction. One end of the observation hole (41) extends through the inner wall of the positioning hole, and the other end extends through the outer peripheral surface of the base (4).

3. The pin disassembly and assembly device according to claim 2, characterized in that, The pressure head (22) can press against the base (4); And / or, an elastic element (5) is sandwiched between the support frame (1) and the stop (25), the elastic element (5) enabling the maximum distance between the pressure head (22) and the base (4) along the preset direction to be greater than the axial length of the pin to be disassembled.

4. The pin disassembly and assembly device according to claim 2, characterized in that, The disassembly assembly also includes a limiting member (24) that is adjustablely connected to the disassembly rod (21) along the preset direction, and an elastic member (5) that is limited between the support frame (1) and the limiting member (24) along the preset direction. The disassembly rod (21) is provided with a first critical position and a second critical position that are spaced apart along the first direction. When the limiting member (24) is located at the first critical position, the elastic member (5) is in a compressed state, so that the pressure head (22) can be kept in a preset position. When the pressure head (22) is in the preset position, the maximum distance between the pressure head (22) and the base (4) is greater than the axial length of the pin to be disassembled. When the limiting member (24) is in the second critical position, the pressure head (22) can press against the base (4) under the weight of the disassembly and assembly assembly.

5. The pin disassembly and assembly device according to claim 4, characterized in that, The limiting member (24) is sleeved on the outside of the disassembly rod (21) and threadedly connected to the disassembly rod (21).

6. The pin-removing and installing device according to any one of claims 2 to 5, characterized in that, The pressure head (22) is provided with at least two, and at least one of the pressure heads (22) is detachably connected to the mounting rod (21); the groove depth of the mounting groove (221) of the different pressure heads (22) is different, and / or the opening shape and / or opening size of the mounting groove (221) of the at least two pressure heads (22) are different; And / or, the pin removal and installation device further includes N gaskets, where N is greater than or equal to 1, and the pin to be removed or installed can be selectively pressed directly against the bottom wall of the mounting groove (221), or at least one of the N gaskets can be pressed against the bottom wall of the mounting groove (221).

7. The pin-removing and installing device according to any one of claims 2 to 5, characterized in that, The inner peripheral wall of the mounting groove (221) and the end face of the pressure head (22) facing the base (4) are connected by a chamfered surface.

8. The pin-removing and installing device according to any one of claims 1 to 5, characterized in that, The pressure head (22) is adjustable relative to the disassembly rod (21) along the preset direction.

9. The pin disassembly and assembly device according to claim 8, characterized in that, The pressure head (22) is threadedly connected to the disassembly rod (21).

10. The pin-removing and installing device according to any one of claims 1 to 5, characterized in that, One of the support frame (1) and the force-applying member (3) is provided with a guide groove, and the other is provided with a guide part (311). The guide part (311) is movably inserted into the guide groove along the preset direction.

11. The pin-removing and installing device according to any one of claims 1 to 5, characterized in that, The force-applying component (3) includes a body (31) movably connected to the support frame (1) along the preset direction, and an operating part (32) protruding from the outer peripheral wall of the body (31).

12. The pin disassembly and assembly device according to claim 11, characterized in that, The end face of the operating part (32) facing the stop part (25) and the end face of the body (31) facing the stop part (25) are flush and form a force-applying surface (33), which can press against the stop part (25) in a first direction.

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