A pin shaft dismounting device

Abstract

The application relates to the technical field of pin shaft dismounting, in particular to a pin shaft dismounting device which comprises a supporting seat, a mounting sleeve fixedly connected with the supporting seat, the mounting sleeve being used for being fixed on a joint plate, a dismounting bolt penetrating through the supporting seat, the dismounting bolt being used for being threadedly connected with a pin shaft to be dismounted, and a dismounting nut being threadedly connected with the dismounting bolt and located at the top of the supporting seat. The pin shaft dismounting device can be conveniently and quickly mounted on the joint plate through the mounting sleeve; through the cooperation of the dismounting bolt and the dismounting nut, the rotation of the dismounting nut around the dismounting bolt can be converted into the axial movement of the pin shaft, the pin shaft can be smoothly pulled out, the traditional knocking mode which is prone to causing equipment damage is avoided, and the maintenance efficiency and convenience are improved.

Description

Technical Field

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

[0002] When underground coal transport cars are in operation, the upper and lower cantilever arms and suspension cylinders in the suspension system are connected to the steering knuckle and the front frame through spherical bearings and connecting pins. During vehicle operation, the traction, braking, steering, and emergency stop loads of the wheel-side drive system all need to be transmitted through the pins. Therefore, the reliability and ease of maintenance of the pins directly affect the vehicle's performance.

[0003] Because the pin is subjected to complex forces, long-term wear and corrosion make its repair and disassembly difficult. The traditional method for disassembling pins is mechanical impact, which involves striking the open end of the pin with traditional tools to disengage it from the hinge hole. This method is prone to damaging equipment and is also time-consuming and labor-intensive. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, this application provides a pin removal device, which can be conveniently and quickly installed onto the connecting plate by means of an installation sleeve; by using the disassembly bolt and the disassembly nut together, the rotation of the disassembly nut around the disassembly bolt can be converted into the axial movement of the pin, so as to realize the smooth removal of the pin, avoid the damage to the equipment caused by the traditional knocking method, and improve maintenance efficiency and convenience.

[0006] A pin removal device according to an embodiment of this application includes: a support base; a mounting sleeve fixedly connected to the support base and used to fix it on a connecting plate; a removal bolt passing through the support base and used to thread-connect with the pin to be removed; and a removal nut threadedly connected to the removal bolt and located at the top of the support base.

[0007] Optionally, the mounting sleeve is semi-cylindrical.

[0008] Optionally, the mounting sleeve is equipped with an observation port.

[0009] Optionally, the mounting sleeve and the connecting plate are interference fit.

[0010] Optionally, the support base is circular, with its center on the central axis of the semi-cylindrical mounting sleeve.

[0011] Optionally, a through hole is provided at the center of the support base, and the disassembly bolt is clearance-fitted with the through hole at the center of the support base.

[0012] Optionally, a first washer is provided between the nut and the support.

[0013] Optionally, a second washer is provided between the removal nut and the removal bolt.

[0014] Optionally, the disassembly bolt is equipped with a locking mechanism, which is used to tighten the disassembly bolt when it is threadedly connected to the pin.

[0015] Optionally, the locking mechanism is a locking nut.

[0016] One of the above technical solutions has at least the following advantages or beneficial effects: The pin removal device provided in this application includes: a support base; a mounting sleeve fixedly connected to the support base and used to fix it to a connecting plate; a removal bolt passing through the support base and used for threaded connection with the pin to be removed; and a removal nut threadedly connected to the removal bolt and located on top of the support base. The mounting sleeve allows for convenient and quick installation of the pin removal device onto the connecting plate. The combined use of the removal bolt and removal nut converts the rotation of the removal nut around the bolt into axial movement of the pin, enabling smooth removal of the pin and avoiding damage caused by traditional hammering methods, thus improving maintenance efficiency and convenience. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This paper shows a schematic diagram of the structure of a pin disassembly device provided in an embodiment of this application; Figure 2 This diagram illustrates the operation of a pin disassembly device according to an embodiment of this application. Figure 3 A schematic diagram of a connecting plate pin shaft is shown.

[0019] [Explanation of Labels in the Attached Image] 1. Support base, 2. Mounting sleeve, 21. Observation port, 3. Removal bolt, 4. Removal nut, 5. First washer, 6. Second washer, 7. Locking nut, 8. Connecting plate, 9. Cantilever. Detailed Implementation

[0020] To better explain and facilitate understanding of this application, a detailed description of the application is provided below with reference to the accompanying drawings and specific embodiments. The directional terms such as "upper," "lower," "inner," and "outer" mentioned herein are used in conjunction with... Figure 1The orientation is used as a reference. The position of the disassembly nut 4 relative to the support 1 is defined as "upper"; the position of the disassembly bolt 3 relative to the mounting sleeve 2 is defined as "inner".

[0021] As mentioned above, pins are common connecting components in mechanical equipment, widely used in the connection points of various types of machinery, especially in suspension systems. During use, due to long-term stress, wear, and corrosion, disassembling and maintaining pins becomes a relatively difficult task. The traditional method for disassembling pins is mechanical striking, which involves using traditional tools to strike the open end of the pin to disengage it from the hinge hole. This method easily damages the equipment and is also time-consuming and labor-intensive.

[0022] To address at least one of the technical problems existing in the prior art or related technologies, this application provides a pin removal device, comprising: a support base; a mounting sleeve fixedly connected to the support base and used for fixing to a connecting plate; a removal bolt passing through the support base and used for threaded connection with the pin to be removed; and a removal nut threadedly connected to the removal bolt and located at the top of the support base. The mounting sleeve allows for convenient and quick installation of the pin removal device onto the connecting plate. The combined use of the removal bolt and removal nut converts the rotation of the removal nut around the removal bolt into axial movement of the pin, enabling smooth removal of the pin and avoiding damage caused by traditional hammering methods, thus improving maintenance efficiency and convenience.

[0023] The following description, with reference to the accompanying drawings, describes an engine hood support device according to some embodiments provided in this application.

[0024] See Figures 1 to 3 The present application provides a pin disassembly device, comprising: a support base 1; an mounting sleeve 2, which is fixedly connected to the support base 1 and is used to fix the mounting sleeve 2 on the connecting plate 8; a disassembly bolt 3, which passes through the support base 1 and is used to thread the disassembly bolt 3 to the pin to be disassembled; and a disassembly nut 4, which is threadedly connected to the disassembly bolt 3 and is located at the top of the support base 1.

[0025] The support base 1 and mounting sleeve 2 are made of high-strength materials, such as steel, aluminum alloy, and cast iron. The support base 1 and mounting sleeve 2 can be fixed by welding or manufactured as a single piece. Since the connecting plate 8 has a platform on the cantilever 9, the mounting sleeve 2 can be installed on the connecting plate 8, enabling the pin removal device to work stably. The support base 1 provides a support platform for the removal bolt 3 and removal nut 4. The lower end of the removal bolt 3 can be screwed into the threaded hole on the upper end face of the pin to be removed. The removal nut 4 is located on top of the support base 1. By rotating the removal nut 4, the mutual rotation between the removal bolt 3 and the removal nut 4 is converted into axial movement of the pin, allowing the pin to be easily pulled out. This avoids damage to the equipment caused by traditional hammering methods, improving maintenance efficiency and convenience.

[0026] At work, such as Figure 2 As shown, first fix the mounting sleeve 2 on the connecting plate 8, screw the disassembly nut 4 onto the top of the disassembly bolt 3, pass the disassembly bolt 3 through the support seat 1, so that the disassembly nut 4 is located on the top of the support seat 1; screw the lower end of the disassembly bolt 3 into the threaded hole of the pin, and then rotate the disassembly nut 4 to make the disassembly bolt 3 move upward. Since the disassembly bolt 3 is connected to the pin and the disassembly nut 4 is in contact with the support seat 1, an axial tensile force will be generated. This tensile force is transmitted to the pin through the disassembly bolt 3, thereby pulling the pin out of the connecting plate 8.

[0027] In one illustrative embodiment, the mounting sleeve 2 is semi-cylindrical. The support base 1 is circular, and the center of the support base 1 is on the central axis of the semi-cylindrical mounting sleeve 2.

[0028] like Figure 3 As shown, the outer periphery of the connecting plate 8 is semi-circular. The mounting sleeve 2 is designed to fit the connecting plate 8, allowing the mounting sleeve 2 to better conform to the outer surface of the connecting plate 8 and improve installation stability. The coaxial design of the circular support base 1 and the semi-cylindrical mounting sleeve 2 allows the disassembly force to be transmitted along the axis of the pin, avoiding the generation of lateral forces and improving disassembly efficiency and safety.

[0029] In one illustrative embodiment, a through hole is provided at the center of the support base 1, and the disassembly bolt 3 is clearance-fitted with the through hole at the center of the support base 1.

[0030] Clearance fit is a type of mechanical fit where the nominal size of the hole is larger than the nominal size of the shaft. By properly designing the tolerance zone, the actual size of the hole is ensured to always be larger than the actual size of the shaft, thus creating a controllable clearance. Clearance fit allows for slight radial movement of the disassembly bolt 3, facilitating alignment adjustments. During installation, due to manufacturing errors or installation position deviations, the disassembly bolt 3 may require a certain amount of adjustment space to ensure alignment with the axis of the pin. Simultaneously, clearance fit reduces friction between the disassembly bolt 3 and the through hole, making the disassembly process smoother.

[0031] In one illustrative embodiment, the mounting sleeve 2 is interference-fitted with the connecting plate 8.

[0032] An interference fit means that the inner diameter of the mounting sleeve 2 is slightly smaller than the outer diameter of the connecting plate 8. During installation, a certain pressure needs to be applied to make the mounting sleeve 2 fit onto the connecting plate 8, forming a tight connection. This design allows the mounting sleeve 2 to be firmly fixed on the connecting plate 8, preventing the mounting sleeve 2 from loosening or falling off during the disassembly of the pin, thus improving the stability and safety of the disassembly process.

[0033] Furthermore, the amount of interference can be determined based on the material and size of the connecting plate 8 and the magnitude of the disassembly force. For example, the interference can be set between 0.05mm and 0.1mm.

[0034] In one illustrative embodiment, the mounting sleeve 2 is provided with an observation port 21. The observation port 21 allows the operator to visually observe the disassembly status of the pin, facilitating the judgment of whether there are any abnormalities in the disassembly process, and improving the visibility and safety of the operation.

[0035] Furthermore, the observation port 21 can be located on the side of the mounting sleeve 2, and its shape can be circular, rectangular, or other geometric shapes. The edges of the observation port 21 can be chamfered to avoid sharp edges causing injury to the operator. Through the observation port 21, the operator can monitor the movement of the pin in real time, promptly detect and handle any problems that may occur during disassembly, such as pin jamming or tilting, thereby ensuring the smooth progress of the disassembly process.

[0036] In one illustrative embodiment, a first washer 5 is provided between the disassembly nut 4 and the support base 1. The first washer 5 can be made of materials with certain self-lubricating properties, such as metal, nylon, or polytetrafluoroethylene. Its function is to increase the contact area, reduce the pressure per unit area, and prevent wear or damage that may be caused when the disassembly nut 4 directly contacts the support base 1.

[0037] Furthermore, the outer diameter of the first washer 5 should be larger than the contact surface diameter of the disassembly nut 4 to ensure effective pressure distribution. The thickness of the first washer 5 can be set from 1mm to 3mm. The use of the first washer 5 not only protects the contact surface between the support base 1 and the disassembly nut 4, but also reduces rotational friction, making the disassembly operation easier and smoother, and extending the service life of the device.

[0038] In one illustrative embodiment, a second washer 6 is provided between the disassembly nut 4 and the disassembly bolt 3. The second washer 6 can reduce the friction between the disassembly nut 4 and the disassembly bolt 3, making the rotation of the disassembly nut 4 smoother, and at the same time, it can prevent thread wear between the disassembly nut 4 and the disassembly bolt 3. In actual use, the second washer 6 can be used in conjunction with the first washer 5 to jointly improve the performance and service life of the device.

[0039] In one illustrative embodiment, the disassembly bolt 3 is provided with a locking mechanism, which is used to tighten the disassembly bolt 3 when it is threadedly connected to the pin. The locking mechanism is a locking nut 7.

[0040] The locking nut 7 is threadedly connected to the disassembly bolt 3 and is located at the end where the disassembly bolt 3 connects to the pin, i.e., below the support base 1. The function of the locking nut 7 is to prevent the connection between the disassembly bolt 3 and the pin from loosening during disassembly, ensuring that the disassembly force is effectively transmitted to the pin. In use, first thread the disassembly bolt 3 to the pin, then tighten the locking nut 7 so that it is tightly against the end face of the pin, forming a double-nut locking effect to prevent the disassembly bolt 3 from loosening. Simultaneously, after the disassembly work is completed, tightening the locking nut 7 upwards can work together with the disassembly nut 4 to fix the disassembly bolt 3 to the support base 1, preventing it from falling off and facilitating storage and transport.

[0041] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "exemplary model," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A pin disassembly device, characterized in that, include: Support base (1) is used to provide a support platform for disassembling bolts (3) and nuts (4); The mounting sleeve (2) is fixedly connected to the support base (1); the mounting sleeve (2) is used to fix it on the connecting plate (8); the outer periphery of the connecting plate (8) is semi-circular; the mounting sleeve (2) is semi-cylindrical, and the mounting sleeve (2) is interference-fitted with the connecting plate (8); The disassembly bolt (3) passes through the support base (1). The disassembly bolt (3) is used to connect with the pin that needs to be disassembled. The disassembly bolt (3) is provided with a locking mechanism, which is used to fasten the disassembly bolt (3) when it is connected with the pin. Remove the nut (4) and thread it to the removal bolt (3). The nut (4) is located on top of the support (1). The support base (1) is circular, and the center of the support base (1) is on the central axis of the semi-cylindrical shape of the mounting sleeve (2). The support base (1) has a through hole at its center, and the disassembly bolt (3) is clearance-fitted with the through hole at the center of the support base (1).

2. The pin disassembly device as described in claim 1, characterized in that, The mounting sleeve (2) is provided with an observation port (21).

3. The pin disassembly device as described in claim 1, characterized in that, A first washer (5) is provided between the disassembly nut (4) and the support base (1).

4. The pin disassembly device as described in claim 1, characterized in that, A second washer (6) is provided between the disassembly nut (4) and the disassembly bolt (3).

5. The pin disassembly device as described in claim 1, characterized in that, The locking mechanism is a locking nut (7).

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