Steel jacket extracting device and steel jacket extracting method

Abstract

The invention relates to the field of auxiliary tools, and provides a steel jacket extracting device and a steel jacket extracting method. The steel sleeve extracting device comprises a driving part. The supporting seat is used for being mounted at a target position; the clamping piece is mounted on the supporting seat, and a plurality of clamping jaws are formed on the clamping piece; the expansion shaft is arranged on the clamping piece in a penetrating mode and suitable for being switched between an expansion position and a contraction position relative to the clamping piece, in the expansion position, the expansion shaft is suitable for expanding the clamping jaw so that the clamping jaw can be matched with the inner side end face of the steel sleeve in a clamping mode, and in the contraction position, the expansion shaft is suitable for being relatively away from the clamping jaw; the driving piece is in transmission connection with the clamping piece to drive the clamping piece to act relative to the target position. According to the steel jacket extracting device, clamping and releasing of the steel jacket are achieved through cooperation of the expansion shaft and the clamping jaws, the operation process is simple and visual, and complex manual auxiliary operation is not needed; the extraction time can be remarkably shortened, and the disassembly efficiency is improved. And the method can be implemented in a limited space and is convenient to operate.

Description

Technical Field

[0001] The invention relates to the field of auxiliary tooling and provides a steel sleeve extraction device and a steel sleeve extraction method. Background Art

[0002] The rail vehicle bogie braking system encountered many problems during the installation and removal of the brake hanger steel sleeve.

[0003] First, for the brake hanger steel sleeve at the non-frame end, a press is usually used in conjunction with a pin to remove it, which is relatively convenient. However, when the brake hanger steel sleeve on the outside of the frame end needs to be removed, the situation becomes complicated. Since the pressing force of the steel sleeve at this position is about 2 tons, manual operation is obviously not enough, and manual knocking or other destructive methods are usually required to extract the steel sleeve. This method is not only easy to damage parts, but also has a long cycle and low efficiency. Especially when working in a small space, the distance between the brake hanger mounting hole and the frame is large, making it impossible for the press and grinding tools to operate normally, and only the more time-consuming and labor-intensive knocking method can be used.

[0004] Secondly, existing methods often render the brake hanger's steel sleeve unusable, wasting resources and costs. Furthermore, the grinding process to extract the sleeve can damage the brake hanger's inner wall, compromising product quality. The lack of specialized disassembly equipment for high-pressure components means there are still significant operational gaps in the removal of these internal components. Summary of the Invention

[0005] An embodiment of the present invention provides a steel sleeve extraction device to solve the defects of the related art, such as low efficiency in removing the steel sleeve, limited use of the equipment, and possible damage to parts.

[0006] An embodiment of the present invention also provides a steel casing extraction method.

[0007] A first embodiment of the present invention provides a steel casing extraction device, comprising: driving parts; A support base, used for installation at a target location; A clamping member is mounted on the support seat, and a plurality of clamping claws are formed on the clamping member; an expansion shaft, which is provided through the clamping member and is adapted to switch between an expanded position and a retracted position relative to the clamping member, wherein in the expanded position, the expansion shaft is adapted to open the clamping claw so that the clamping claw is engaged and adapted with the inner end surface of the steel sleeve, and in the retracted position, the expansion shaft is adapted to be relatively away from the clamping claw; The driving member is in transmission connection with the clamping member to drive the clamping member to move relative to the target position.

[0008] According to one embodiment of the present invention, an installation groove is formed on the support seat, the first groove side wall of the installation groove is suitable for abutting the target position, the second groove side wall of the installation groove is provided with an avoidance opening, and the clip is installed on the side of the support seat corresponding to the avoidance opening.

[0009] According to one embodiment of the present invention, a first accommodating groove is provided on the support seat, a first push rod is movably provided in the first accommodating groove, the clamping member is threadedly connected to the first push rod, the first push rod is transmission-connected to the driving member, and the first push rod is suitable for moving relative to the support seat with the first groove side wall of the mounting groove as a reference under the action of the driving member.

[0010] According to one embodiment of the present invention, a first limiting portion is formed on the first push rod, and a first elastic member is also sleeved on the first push rod, with two ends of the first elastic member respectively abutting the first limiting portion and the first slot side wall of the installation slot.

[0011] According to one embodiment of the present invention, a connecting section is formed on the first push rod, the clamping member is threadedly connected to the connecting section, and the expansion shaft is threadedly connected to the clamping member.

[0012] According to one embodiment of the present invention, it also includes an abutment portion, which is used to abut against the target position. A second accommodating groove is formed on the support seat. The clamping member is passed through the second accommodating groove and is threadedly connected to the support seat. The driving member is suitable for driving the support seat to move relative to the target position based on the abutment portion.

[0013] According to one embodiment of the present invention, a second push rod is movably provided in the second accommodating groove, and the second push rod includes a protruding section, and the protruding section extends out of the second accommodating groove to form the abutting portion.

[0014] According to one embodiment of the present invention, an insertion section is formed at one end of the second push rod away from the extending section, a step surface is formed between the insertion section and the extending section, the insertion section is inserted into the second accommodating groove, a second limiting portion is formed on the insertion section, a second elastic member is sleeved on the insertion section, and both ends of the second elastic member respectively abut the second limiting portion and the step surface.

[0015] According to one embodiment of the present invention, a mounting hole is formed on the clamping member, the expansion shaft is passed through the mounting hole, and a tapered section is formed on one end of the expansion shaft close to the claw. From the contracted position to the expanded position, the tapered shaft is suitable for squeezing the claw so that the claw is clamped on the inner end face of the steel sleeve.

[0016] A second embodiment of the present invention provides a steel jacket extraction method using the steel jacket extraction device as described above, comprising: Installing the support base at the target position; Inserting the clamping piece into the steel sleeve and switching the expansion shaft from the contracted position to the expanded position so that the clamping claw is clamped to the inner end surface of the steel sleeve; The driving member drives the clamping member to move with the target position as a reference to remove the steel sleeve.

[0017] According to a first aspect of the present invention, a steel jacket extraction device is provided. This device achieves engagement and release of the steel jacket through the cooperation of an expansion shaft and clamping jaws. Operation is simple and intuitive, requiring no complex manual intervention. Furthermore, a driver can quickly and stably drive the clamping jaws, significantly improving the efficiency of steel jacket extraction. Compared to traditional manual extraction methods or other complex extraction equipment, this significantly shortens extraction time and improves production efficiency. Because the number, shape, and size of the clamping jaws can be tailored to suit different steel jacket specifications, and the expansion and contraction capabilities of the expansion shaft can accommodate steel jackets of varying inner diameters, the device is adaptable to a wide range of specifications and types of steel jackets, offering high versatility and reducing the cost of equipping multiple specialized extraction equipment for varying steel jacket specifications. During the extraction process, the expansion shaft expands the clamping jaws, forming a tight engagement with the inner end surface of the steel jacket, providing sufficient gripping force to prevent the jacket from loosening or falling off during extraction. This ensures the safety and stability of the extraction process and effectively prevents equipment damage or personal injury that could result from the jacket falling off. The device's components are rationally designed, tightly connected and coordinated, resulting in a compact overall structure and minimal footprint, making it easy to install and use in a variety of work environments and equipment layouts. Furthermore, the use of high-strength, wear-resistant materials for key components, such as the jaws and expansion shaft, and the rational mechanical design ensure high reliability and a long service life, reducing maintenance costs and downtime.

[0018] According to the steel sleeve extraction method provided by the embodiment of the second aspect of the present invention, the extraction method has clear division of labor and close connection in each step, making full use of the structural advantages of the steel sleeve extraction device. From the rapid installation and fixation of the support seat, to the precise connection between the clamping parts and the steel sleeve, and then to the driving part driving the clamping parts to quickly extract the steel sleeve, the entire process is smooth and the time for steel sleeve extraction is greatly shortened. Compared with traditional manual or inefficient extraction methods, it significantly improves production efficiency and is suitable for steel sleeve disassembly operations in large-scale industrial production. Because the clamping parts and expansion shaft design of the steel sleeve extraction device can adapt to the inner diameter of steel sleeves of different specifications, this extraction method is applicable to steel sleeve extraction work of various sizes and types. Whether it is a small-diameter, thin-walled steel sleeve or a large-diameter, thick-walled steel sleeve, reliable extraction can be achieved by simply following the same operating steps and adjusting the movement distance of the expansion shaft to adapt to the inner diameter of the steel sleeve. The stable installation method of the support seat and the strong clamping force of the clamping parts ensure that the device is firmly connected to the steel sleeve during the steel sleeve extraction process. Even in complex working conditions or when the steel sleeve installation is subject to significant resistance, the claws can firmly grasp the steel sleeve to prevent it from falling, effectively avoiding the risk of equipment damage and personal injury caused by the falling steel sleeve. At the same time, the drive element can adjust its output according to actual conditions, ensuring a smooth and controllable extraction process, further enhancing the safety and reliability of the extraction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic three-dimensional diagram of a steel sleeve extraction device provided by the present invention.

[0021] Figure 2 It is a schematic three-dimensional diagram of another steel sleeve extraction device provided by the present invention.

[0022] Figure 3 It is a schematic three-dimensional diagram of a support base and a clamping member provided by the present invention.

[0023] Figure 4 It is a schematic side view of a support base and a clamping member provided by the present invention.

[0024] Figure 5 yes Figure 4 Schematic cross-sectional view along the AA direction.

[0025] Figure 6 It is a schematic three-dimensional diagram of another support base and a clamping member provided by the present invention.

[0026] Figure 7 It is a schematic side view of another support base and a clamping member provided by the present invention.

[0027] Figure 8 yes Figure 7 Schematic cross-sectional view along the BB direction.

[0028] Figure 9 It is a schematic flow chart of the steel casing extraction method provided by the present invention.

[0029] Reference numerals: 100. Driving member; 102. Support seat; 104. Clamping member; 106. Clamping claw; 108. Expansion shaft; 110. Mounting groove; 112. Avoidance opening; 114. First accommodating groove; 116. First push rod; 118. First limiting portion; 120. First elastic member; 122. Connecting section; 124. Abutting portion; 126. Second accommodating groove; 128. Second push rod; 130. Extending section; 132. Inserting section; 134. Step surface; 136. Second limiting portion; 138. Second elastic member; 140. Mounting hole; 142. Tapered section. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0031] like Figures 1 to 8 As shown, the first embodiment of the present invention provides a steel casing extraction device, comprising: Driving member 100; Support base 102, for installation at the target location; The clamping member 104 is mounted on the support base 102 and has a plurality of claws 106 formed thereon; An expansion shaft 108 is provided through the clamping member 104 and is adapted to switch between an expanded position and a retracted position relative to the clamping member 104. In the expanded position, the expansion shaft 108 is adapted to open the claws 106 so that the claws 106 engage with the inner end surface of the steel sleeve. In the retracted position, the expansion shaft 108 is adapted to be relatively away from the claws 106. The driving member 100 is in transmission connection with the clamping member 104 to drive the clamping member 104 to move relative to the target position.

[0032] According to the steel sleeve extraction device provided in the embodiment of the first aspect of the present invention, the steel sleeve extraction device realizes the clamping and releasing of the steel sleeve through the cooperation of the expansion shaft 108 and the clamping claw 106. The operation process is simple and intuitive, and no complicated manual auxiliary operation is required. At the same time, the driving member 100 can quickly and stably drive the clamping member 104 to move, greatly improving the efficiency of steel sleeve extraction. Compared with traditional manual extraction methods or other complex extraction equipment, it can significantly shorten the extraction time and improve production efficiency. Since the number, shape and size of the clamping claws 106 can be specifically designed according to different specifications of steel sleeves, and the expansion and contraction function of the expansion shaft 108 can adapt to steel sleeves of different inner diameters, the device can be applied to steel sleeve extraction work of various specifications and types, has strong versatility, and reduces the cost of equipping multiple special extraction equipment due to different steel sleeve specifications. During the extraction process, the expansion shaft 108 opens the clamping claw 106 and forms a tight clamping fit with the inner end face of the steel sleeve, which can provide sufficient gripping force to ensure that the steel sleeve will not loosen or fall off during the extraction process, ensuring the safety and stability of the extraction work, and effectively avoiding problems such as equipment damage or personal injury caused by the falling off of the steel sleeve. The structural design of each component of the device is reasonable, the connection and coordination between each other are tight, the overall structure is compact, and the space occupied is small, which is convenient for installation and use in various working environments and equipment layouts. At the same time, high-strength and wear-resistant materials are used to make key components, such as the clamping claw 106 and the expansion shaft 108, and through reasonable mechanical structure design, it is ensured that the device has high reliability and long service life, reducing the maintenance cost and downtime of the equipment.

[0033] Please continue to see Figures 1 to 8 The core structure of the steel sleeve extraction device provided by the present invention includes a driving member 100, a support seat 102, a clamping member 104 and an expansion shaft 108, and the various components cooperate with each other to achieve efficient extraction of the steel sleeve.

[0034] The driver 100, the power source for the entire device, is a key component in achieving the steel sleeve extraction operation. It provides power to the clamping member 104, driving it to perform various movements relative to the target position, such as translation and rotation. The specific movement type can be designed and adjusted based on actual extraction requirements. The driver 100 can utilize a variety of power sources, such as an electric motor or hydraulic motor. Connected to the clamping member 104 via a transmission mechanism, the driver 100 effectively transmits its own power to the clamping member 104.

[0035] The main function of the support seat 102 is to realize the installation and fixation of the device at the target position, and to provide a stable support foundation for the entire extraction device. The target position can be a specific installation position of mechanical equipment, a fixed workstation on a production line, etc. In an embodiment of the present invention, the target position can be a brake hanger on a frame. The structural design of the support seat 102 needs to fully consider the convenience and stability of installation, and usually a plurality of mounting holes 140 or mounting surfaces are provided so as to be reliably connected to the target position by means of bolts, snaps, etc. During the installation process, the position and angle of the support seat 102 can be fine-tuned according to the actual working conditions to ensure that the entire device is in a suitable working state.

[0036] The clamping member 104 is mounted on the support base 102, and the multiple claws 106 formed thereon are the key structure for achieving clamping with the steel sleeve. The number, shape and size of the claws 106 are specifically designed according to the inner end face structure of the steel sleeve of different specifications to ensure that they can achieve good clamping and adaptation with the inner end face of the steel sleeve. The claws 106 are usually made of high-strength, wear-resistant materials, such as alloy steel, to ensure sufficient strength and stability during the clamping and extraction process to avoid deformation or damage. The connection between the clamping member 104 and the support base 102 can be achieved by bolt connection, welding, etc., to ensure that the clamping member 104 will not loosen during operation.

[0037] The expansion shaft 108 is passed through the interior of the clamping member 104 and can be flexibly switched between an expanded position and a contracted position relative to the clamping member 104. When the expansion shaft 108 is in the expanded position, the expansion shaft 108 presses against the claw 106 to open the claw 106, so that the claw 106 can be tightly engaged with the inner end face of the steel sleeve to form a firm connection, providing a reliable grip for the subsequent extraction action. When the expansion shaft 108 is in the contracted position, it is relatively far away from the claw 106, and the claw 106 loses the supporting effect of the expansion shaft 108, thereby releasing the engagement state with the steel sleeve, facilitating the extraction of the steel sleeve and the resetting operation of the device. The expansion and contraction actions of the expansion shaft 108 can be achieved through various methods such as hydraulic pressure, pneumatic pressure, and mechanical transmission. For example, when a hydraulic method is used, hydraulic oil can be injected or discharged into the cavity inside the expansion shaft 108 through the hydraulic system to promote the expansion and contraction of the expansion shaft 108; when a mechanical transmission method is used, the position switching of the expansion shaft 108 can be achieved through a screw-nut mechanism, a wedge block mechanism, etc.

[0038] During the actual operation, the support base 102 is first installed and fixed on the target position to ensure the stability of the device. Then, the claw 106 on the clamping member 104 is aligned with the inner end face of the steel sleeve, and the expansion shaft 108 is moved to the expanded position through operation, and the claw 106 is stretched to make it engage and fit with the inner end face of the steel sleeve. Next, the driving member 100 is started, and the driving member 100 drives the clamping member 104 to move relative to the target position through the transmission connection, thereby extracting the steel sleeve from its installation position. When the steel sleeve is extracted, the expansion shaft 108 is switched to the retracted position to release the clamping claw 106 from the steel sleeve so that the next extraction operation can be carried out.

[0039] According to one embodiment of the present invention, an installation groove 110 is formed on the support seat 102, the first groove side wall of the installation groove 110 is suitable for abutting the target position, and an avoidance opening 112 is opened on the second groove side wall of the installation groove 110, and the clamping member 104 is installed on the side of the support seat 102 corresponding to the avoidance opening 112.

[0040] In one embodiment of the present invention, the first groove side wall of the installation groove 110 is a planar structure, which can be tightly abutted against the target position over a large area. Whether it is a specific installation position of mechanical equipment or a fixed workstation on a production line, the support seat 102 can be firmly fixed to the target position through bolts, snaps and other connectors to ensure the stability of the device during operation.

[0041] The avoidance opening 112 provided on the side wall of the second groove of the installation groove 110 creates conditions for the installation and operation of the clamping member 104. The clamping member 104 is installed on the side of the support seat 102 corresponding to the avoidance opening 112. During the installation process, the avoidance opening 112 can accommodate part of the structure of the clamping member 104, avoiding interference with other parts of the support seat 102 during installation, so that the clamping member 104 can be accurately installed in place. During operation, the expansion shaft 108 switches between expansion and contraction positions in the clamping member 104, driving the claw 106 to expand or retract. The avoidance opening 112 provides sufficient space for the movement of the claw 106, ensuring that the claw 106 can smoothly engage or separate with the inner end face of the steel sleeve, and will not affect normal operation due to the obstruction of the support seat 102.

[0042] The side wall of the first groove of the installation groove 110 abuts against the large area of the target position. Compared with the traditional single-point or small-area connection method, it can evenly disperse the force generated when the device is working, reduce the risk of loosening or displacement of the support seat 102, greatly improve the stability of the entire device during the extraction of the steel sleeve, and provide a guarantee for reliable extraction. The setting of the avoidance opening 112 is to reserve space for the movement of the clamping member 104 and the claw 106, so that the installation of the clamping member 104 is convenient, and the clamping and separation process of the claw 106 and the steel sleeve is smoother, reducing the probability of failure due to structural interference and improving the fluency and efficiency of the steel sleeve extraction operation. This structural design makes the layout of components such as the support seat 102 and the clamping member 104 more compact and reasonable, and realizes the dual functions of stable installation and flexible operation in a limited space, effectively saving the space occupied by the device, facilitating use in a space-constrained working environment, and improving the applicability of the device.

[0043] According to one embodiment of the present invention, a first accommodating groove 114 is provided on the support seat 102, and a first push rod 116 is movably provided in the first accommodating groove 114. The clamping member 104 is threadedly connected to the first push rod 116, and the first push rod 116 is transmission-connected to the driving member 100. The first push rod 116 is suitable for moving relative to the support seat 102 with the first groove side wall of the mounting groove 110 as a reference under the action of the driving member 100.

[0044] In one embodiment of the present invention, the support base 102 is provided with not only a mounting groove 110 that abuts closely against the target position, but also a first receiving groove 114. The first receiving groove 114 is opened inside the support base 102 along a specific direction, providing a guide space for the movement of the first push rod 116.

[0045] The first push rod 116 is movably disposed in the first receiving groove 114. One end of the first push rod 116 is connected to the driving member 100 via a transmission mechanism, and the other end is threadedly connected to the clamping member 104. This threaded connection ensures a secure connection between the clamping member 104 and the first push rod 116 while facilitating disassembly and adjustment. During installation, the clamping member 104 can be securely mounted on the first push rod 116 by rotating it, and the position of the clamping member 104 on the first push rod 116 can be adjusted as needed.

[0046] When the driver 100 is activated, power is transmitted to the first push rod 116. Under the action of the driver 100, the first push rod 116 moves linearly within the first receiving groove 114 relative to the support base 102, with the first groove sidewall of the mounting groove 110 as a reference. The movement of the first push rod 116 drives the connecting member 104 threadedly connected thereto to move synchronously, thereby achieving precise positioning and engagement between the claw 106 on the connecting member 104 and the steel sleeve, and subsequent extraction.

[0047] Combined with other components of the device, the complete workflow is as follows: First, fix the support seat 102 in the target position through the first groove side wall of the installation groove 110 to ensure the stability of the device. Then thread the clamping member 104 onto the first push rod 116 and adjust the position. Align the claw 106 on the clamping member 104 with the inner end face of the steel sleeve, control the expansion shaft 108 to expand, and stretch the claw 106 to engage with the steel sleeve. Start the driving member 100, and the driving member 100 drives the first push rod 116 to move relative to the support seat 102 with the first groove side wall of the installation groove 110 as a reference. The first push rod 116 drives the clamping member 104 to extract the steel sleeve. After the extraction is completed, the expansion shaft 108 switches to the retracted position, the claw 106 is released, and the driving member 100 moves in the opposite direction to reset the first push rod 116 and the clamping member 104, preparing for the next operation.

[0048] The movement of the first push rod 116 within the first receiving groove 114, combined with its transmission connection with the driver 100, can accurately and stably transmit the power of the driver 100 to the clamping member 104. Compared with some simple direct connection methods, this structure can effectively reduce loss and deviation during the power transmission process, ensuring that the clamping member 104 can move according to the expected trajectory and force, thereby improving the accuracy and stability of steel sleeve extraction.

[0049] According to one embodiment of the present invention, a first limiting portion 118 is formed on the first push rod 116 , and a first elastic member 120 is also sleeved on the first push rod 116 . The two ends of the first elastic member 120 respectively abut the first limiting portion 118 and the first groove side wall of the installation groove 110 .

[0050] In one embodiment of the present invention, a first stopper 118 is formed on the first push rod 116. This first stopper 118 can be designed as a raised annular structure, a bump structure, or other retaining shape, and is fixed to a specific position on the first push rod 116. A first elastic member 120 is also sleeved on the first push rod 116. The first elastic member 120 can be a spring, an elastic rubber ring, or other elastically deformable component. One end of the first elastic member 120 tightly abuts against the first stopper 118, while the other end abuts against the sidewall of the first groove of the mounting groove 110.

[0051] During operation of the device, when the driving member 100 drives the first push rod 116 to move, the first push rod 116 squeezes the first elastic member 120, causing the first elastic member 120 to undergo elastic deformation and accumulate elastic potential energy. When it is necessary to stop moving or adjust the position, the first elastic member 120 releases the elastic potential energy, providing a reverse buffering force for the first push rod 116, allowing the first push rod 116 to stop moving smoothly and avoid position deviation caused by inertia. At the same time, after the clamping member 104 drives the steel sleeve to complete the extraction action, the driving member 100 reverses and the first elastic member 120 assists the first push rod 116 in quickly resetting. During the resetting process, the first limiter 118 limits the first elastic member 120 from being overly compressed or stretched, ensuring that the first elastic member 120 is always in a reasonable working state, ensuring that the first push rod 116 can start and stop at the correct position each time it moves, thereby ensuring the precise fit between the claw 106 on the clamping member 104 and the steel sleeve.

[0052] The cooperation between the first elastic member 120 and the first limiting portion 118 provides a buffer and precise positioning for the movement of the first push rod 116. During the movement of the first push rod 116, the first elastic member 120 effectively absorbs the impact forces generated by factors such as the start and stop of the driver 100 and changes in the resistance of the steel sleeve, preventing the first push rod 116 from excessive movement due to inertia. This ensures that the claw 106 on the clamping member 104 accurately reaches the predetermined position and engages with the steel sleeve every time, thereby improving the accuracy of steel sleeve extraction. Furthermore, the buffering effect reduces rigid collisions between components, reduces the risk of component damage, and extends the service life of the device.

[0053] After the steel jacket is extracted, the first elastic member 120 releases its elastic potential energy, assisting the first push rod 116 in quickly and stably resetting. Compared to resetting by relying solely on the reverse action of the driver 100, this significantly shortens the resetting time and improves the efficiency of the steel jacket extraction device. Furthermore, the first stopper 118 ensures that the first push rod 116 returns to the correct position, ensuring consistency and reliability of each operation and ensuring continuous and efficient steel jacket extraction.

[0054] According to one embodiment of the present invention, a connecting section 122 is formed on the first push rod 116 , the clamping member 104 is threadedly connected to the connecting section 122 , and the expansion shaft 108 is threadedly connected to the clamping member 104 .

[0055] In one embodiment of the present invention, a connecting section 122 is formed on the end of the first push rod 116 away from the driver 100, and a threaded hole is formed in the connecting section 122. The clamping member 104 is provided with a threaded section that is threadedly connected to the threaded hole. By rotating the clamping member 104, it can be securely mounted on the connecting section 122, and the relative position of the clamping member 104 and the first push rod 116 can be precisely controlled by adjusting the screw-in depth. The expansion shaft 108 is also provided with a threaded section on the end near the clamping member 104. The threaded section of the clamping member 104 has a coaxial threaded hole. The expansion shaft 108 is threadedly connected to the threaded hole of the clamping member 104 through the threaded section. The expansion shaft 108 is threadedly connected to the clamping member 104 by rotating the expansion shaft 108.

[0056] According to one embodiment of the present invention, it also includes an abutment portion 124, which is used to abut against the target position. A second accommodating groove 126 is formed on the support seat 102. The clamping member 104 is passed through the second accommodating groove 126 and is threadedly connected to the support seat 102. The driving member 100 is suitable for driving the support seat 102 to move relative to the target position with the abutment portion 124 as a reference.

[0057] In one embodiment of the present invention, the abutment portion 124 is an important component for the device to contact the target position. Its surface is flat and adapts to the mounting surface of the target position. The abutment portion 124 is tightly abutted against the target position, providing a stable fulcrum and reference surface for the device.

[0058] The second receiving groove 126 formed on the support seat 102 has a shape and size that matches the clamping member 104, and the clamping member 104 can be smoothly inserted into the second receiving groove 126. The driving member 100 establishes a transmission connection with the support seat 102. When the driving member 100 is started, it can drive the support seat 102 to move linearly relative to the target position with the abutment portion 124 as a reference. In actual operation, the abutment portion 124 is first pressed against the target position, and the position of the clamping member 104 in the second receiving groove 126 is adjusted so that the claw 106 on the clamping member 104 is aligned with the inner end face of the steel sleeve. Subsequently, the expansion shaft 108 switches from the contracted position to the expanded position, and the claw 106 is opened to engage with the inner end face of the steel sleeve. At this point, the driver 100 begins to operate, driving the support base 102 to move. Since the clamping member 104 is threadedly connected to the support base 102, the movement of the support base 102 drives the clamping member 104 to move synchronously, thereby extracting the clamped steel sleeve from the target position. When the steel sleeve is extracted, the expansion shaft 108 switches to the retracted position, the claw 106 is released, and the driver 100 reverses its movement, driving the support base 102 to return to its original position, preparing for the next extraction operation.

[0059] The abutment portion 124 is in close contact with the target position, providing a stable reference for the movement of the support base 102 and the entire device. The driver 100 drives the support base 102 to move based on the abutment portion 124, which can accurately control the movement trajectory and position of the clamping member 104, allowing the claw 106 to accurately engage with the inner end face of the steel sleeve. Compared with devices without a clear reference, this greatly improves the positioning accuracy during the steel sleeve extraction process and reduces the extraction failure or steel sleeve damage caused by positioning deviation. The clamping member 104 and the support base 102 are connected to the second receiving groove 126 by threads. This connection method is not only firmly installed, but also can effectively disperse the forces generated during the steel sleeve extraction process. At the same time, the fixed connection between the abutment portion 124 and the target position, as well as the coordinated cooperation between the support base 102, the clamping member 104 and other components, enhance the structural strength and stability of the entire device, allowing the device to maintain reliable operation when facing large loads or complex working conditions, reducing the risk of equipment failure.

[0060] According to one embodiment of the present invention, a second push rod 128 is movably disposed in the second receiving groove 126 . The second push rod 128 includes a protruding section 130 . The protruding section 130 extends out of the second receiving groove 126 to form an abutting portion 124 .

[0061] In one embodiment of the present invention, a guiding structure (such as a guide groove, etc.) can be provided between the second push rod 128 and the inner wall of the second receiving groove 126 to ensure that the second push rod 128 can slide smoothly in a specific direction in the second receiving groove 126 to avoid shaking. The protruding section 130 of the second push rod 128 has a flat surface and a certain strength to ensure a tight and stable contact with the target position. The clamping member 104 is still passed through the second receiving groove 126 and is threadedly connected to the support seat 102. During installation, the position of the second push rod 128 can be adjusted first so that the protruding section 130 contacts the target position, and then the clamping member 104 is rotated to securely install it on the support seat 102, and the position of the clamping member 104 in the second receiving groove 126 is adjusted according to the specifications of the steel sleeve.

[0062] The driver 100 is in transmission connection with the support base 102. When the driver 100 is activated, it drives the support base 102 to move. Since the second push rod 128 is movably connected to the second receiving groove 126 and the extended section 130 abuts the target position, the support base 102 can move relative to the abutment portion 124 under the drive of the driver 100. In actual operation, the extended section 130 of the second push rod 128 is first abutted against the target position, the clamping member 104 is adjusted so that the claw 106 is aligned with the inner end face of the steel sleeve. Then, the expansion shaft 108 is switched from the retracted position to the expanded position, and the claw 106 is opened to engage with the inner end face of the steel sleeve. The driver 100 then drives the support base 102 to move relative to the target position with the abutment portion 124 as a reference, thereby extracting the steel sleeve. After extraction is completed, the expansion shaft 108 is switched to the retracted position, the claw 106 is released, and the driver 100 reverses its motion, driving the support base 102 and the second push rod 128 to reset.

[0063] The extended section 130 of the second push rod 128 serves as the abutment portion 124, directly contacting the target position, and can provide a more accurate reference for the movement of the support base 102 and the entire device. Because the second push rod 128 has good guidance when moving within the second receiving groove 126, when the driving member 100 drives the support base 102 to move with the abutment portion 124 as a reference, the guiding effect of the second push rod 128 can control the movement trajectory and position of the clamping member 104, further improving the accuracy of the clamping claw 106 and the inner end face of the steel sleeve, reducing extraction errors, and lowering the probability of steel sleeve damage or extraction failure due to inaccurate positioning.

[0064] The cooperation between the second push rod 128 and the second receiving slot 126, and the contact between the extension 130 and the target position, increase the contact points and force-bearing area between the device and the target position, making the force applied to the device more even during operation. Furthermore, the threaded connection between the clamping member 104 and the support base 102, as well as the coordinated cooperation between the various components, effectively enhance the structural strength and stability of the entire device, enabling it to better cope with heavy loads and complex working conditions, and reducing the possibility of equipment failure.

[0065] According to one embodiment of the present invention, an insertion section 132 is formed at one end of the second push rod 128 away from the extending section 130, a step surface 134 is formed between the insertion section 132 and the extending section 130, the insertion section 132 is passed through the second accommodating groove 126, a second limiting portion 136 is formed on the insertion section 132, and a second elastic member 138 is sleeved on the insertion section 132, and the two ends of the second elastic member 138 respectively abut the second limiting portion 136 and the step surface 134.

[0066] In one embodiment of the present invention, an insertion section 132 is formed at the end of the second push rod 128 facing away from the extension section 130. The insertion section 132 has a smaller diameter than the extension section 130, thereby forming a stepped surface 134 between the insertion section 132 and the extension section 130. The insertion section 132 is movably inserted into the second receiving groove 126 and is formed with a second stopper 136, which can be an annular protrusion or a snap ring structure. A second elastic member 138, such as a spring or an elastic rubber ring, is also sleeved on the insertion section 132. The two ends of the second elastic member 138 respectively abut the second stopper 136 and the stepped surface 134.

[0067] When the driver 100 drives the support seat 102 to move relative to the target position, the extended section 130 of the second push rod 128 abuts the target position, and the support seat 102 moves relative to the inserted section 132. The second elastic member 138 can be in a pre-compressed state in its initial state, providing an initial abutting force for the second push rod 128 and ensuring close contact between the extended section 130 and the target position. During operation of the device, if the steel sleeve installation resistance changes or the movement speed of the support seat 102 fluctuates, the second elastic member 138 can be compressed or stretched to provide buffering adjustment, allowing the second push rod 128 to adaptively adjust the abutting force and maintain stable contact between the device and the target position.

[0068] The cooperation between the second elastic member 138 and the second limiting portion 136 can provide a buffering protection effect during the operation of the device. When the steel sleeve installation resistance suddenly increases or the movement speed of the support seat 102 changes, the second elastic member 138 can absorb the impact energy by compression or stretching to avoid damage to components caused by rigid collision. At the same time, the elastic force of the second elastic member 138 can enable the second push rod 128 to adaptively adjust the abutment force to ensure that the extended section 130 always maintains close contact with the target position, thereby improving the stability and reliability of the device under complex working conditions. Due to the buffering effect of the second elastic member 138, the impact and vibration of the device during operation are reduced, the wear rate of each component is reduced, and the service life of the equipment is extended. At the same time, the second limiting portion 136 limits the stroke of the second elastic member 138 to prevent the elastic member from being over-compressed or stretched, further protecting the elastic member and related components, and reducing equipment maintenance costs and downtime.

[0069] According to one embodiment of the present invention, a mounting hole 140 is formed on the clamping member 104, and the expansion shaft 108 is passed through the mounting hole 140. A tapered section 142 is formed on the end of the expansion shaft 108 close to the claw 106. From the contracted position to the expanded position, the tapered shaft is suitable for squeezing the claw 106 so that the claw 106 is clamped on the inner end face of the steel sleeve.

[0070] In one embodiment of the present invention, a mounting hole 140 is precisely machined on the clamping member 104. The size of the mounting hole 140 is adapted to the expansion shaft 108, which can ensure that the expansion shaft 108 can pass through it smoothly while maintaining a certain coaxiality, thereby ensuring the stability of the expansion shaft 108 during operation.

[0071] The end of the expansion shaft 108 close to the claw 106 is designed with a tapered section 142. The tapered section 142 is in the shape of a truncated cone, and its outer diameter gradually decreases from the end away from the claw 106 to the end close to the claw 106. This special geometric shape provides a mechanical basis for the clamping of the claw 106. When the expansion shaft 108 is in the retracted position, the tapered section 142 is away from the claw 106, and the claw 106 is in a naturally relaxed state. At this time, the clamping member 104 can easily approach the steel sleeve and align the claw 106 with the inner end face of the steel sleeve. When the steel sleeve needs to be clamped, the relative position of the expansion shaft 108 and the claw 106 is adjusted to move the expansion shaft 108 toward the expanded position. As the expansion shaft 108 advances, the tapered section 142 gradually penetrates into the interior of the claw 106. Due to the inclined surface characteristics of the tapered section 142, during the movement, the inclined surface will exert a radial component of force on the claw 106, forcing the claw 106 to open outward. As the expansion shaft 108 moves further, the extrusion force exerted on the clamping claws 106 gradually increases until they are tightly clamped on the inner end surface of the steel sleeve, forming a firm gripping structure and providing a reliable connection basis for the subsequent extraction of the steel sleeve.

[0072] The design of the tapered section 142 of the expansion shaft 108 and the claws 106 produces a strong clamping force. Compared to traditional clamping methods, this design utilizes the principle of inclined extrusion to efficiently convert axial movement into radial expansion force for the claws 106, ensuring a tight fit between the claws 106 and the inner end face of the steel sleeve. This design effectively prevents the sleeve from falling off, even in complex working conditions such as vibration and impact, or when extracting heavy sleeves. This significantly improves the reliability and safety of the sleeve extraction process, providing a stable guarantee for sleeve removal operations in industrial production.

[0073] like Figure 9 As shown, the second embodiment of the present invention provides a steel jacket extraction method of the steel jacket extraction device as described above, comprising: Step 10, installing the support base 102 at the target position; Step 20: insert the clamping member 104 into the steel sleeve and switch the expansion shaft 108 from the contracted position to the expanded position so that the claw 106 is clamped to the inner end surface of the steel sleeve; In step 30 , the driving member 100 drives the clamping member 104 to move based on the target position to remove the steel sleeve.

[0074] According to the second aspect of the present invention, the steel jacket extraction method provided by the embodiment features a clearly defined and seamlessly integrated process, fully leveraging the structural advantages of the steel jacket extraction device. From the rapid installation and fixation of the support base 102, to the precise engagement of the clamping member 104 with the steel jacket, to the driver 100 driving the clamping member 104 to rapidly extract the jacket, the entire process operates smoothly, significantly reducing the time required for jacket extraction. Compared to traditional manual or inefficient extraction methods, this method significantly improves production efficiency and is suitable for large-scale industrial steel jacket removal operations. Because the clamping member 104 and expansion shaft 108 of the steel jacket extraction device are designed to adapt to the inner diameter of different steel jacket specifications, this extraction method is applicable to a variety of sizes and types of steel jackets. Whether it's a small-diameter, thin-walled steel jacket or a large-diameter, thick-walled steel jacket, reliable extraction can be achieved by simply following the same steps and adjusting the movement distance of the expansion shaft 108 to match the inner diameter of the jacket. The stable installation of the support base 102 and the strong clamping force of the clamping member 104 ensure a secure connection between the device and the jacket during the extraction process. Even in complex working conditions or when the steel sleeve installation presents significant resistance, the claws 106 can firmly grasp the steel sleeve, preventing it from falling off, effectively avoiding the risk of equipment damage and personal injury caused by the falling steel sleeve. Furthermore, the driver 100 can adjust its output based on actual conditions, ensuring a smooth and controllable extraction process, further enhancing the safety and reliability of the extraction process.

[0075] Please continue to see Figure 9 The steel jacket extraction method provided in the second embodiment of the present invention is based on the above-mentioned steel jacket extraction device to ensure that the steel jacket extraction process is efficient and stable.

[0076] Specifically, step 10: installing the support base 102 at the target position; The support base 102 serves as the basic supporting component of the entire device, and the support base 102 is placed on the target position; Step 20: Insert the clamping member 104 into the steel sleeve and switch the expansion shaft 108 from the contracted position to the expanded position so that the claw 106 is clamped to the inner end surface of the steel sleeve; The clamping member 104 is provided with a plurality of claws 106, and the expansion shaft 108 is inserted into the mounting hole 140. First, align the clamping member 104 with the steel sleeve and slowly push the clamping member 104 so that the clamping member 104 passes through the steel sleeve, ensuring that the claws 106 smoothly enter the interior of the steel sleeve and align with the inner end face of the steel sleeve. At this time, the expansion shaft 108 is in the retracted position, and its tapered section 142 at one end close to the claw 106 is away from the claw 106, and the claw 106 is in a naturally relaxed state. The expansion shaft 108 then moves from the retracted position to the expanded position. As the expansion shaft 108 advances, its tapered section 142 gradually penetrates into the area of the claw 106. The inclined surface characteristics of the tapered section 142 exert a radial force on the claw 106, forcing the claw 106 to expand outward. Continue to push the expansion shaft 108 until the claw 106 is tightly engaged with the inner end face of the steel sleeve, forming a firm gripping structure. During this process, the moving distance of the expansion shaft 108 needs to be precisely controlled to ensure that the clamping claws 106 generate appropriate clamping force, which can not only firmly grasp the steel sleeve but also avoid damage to the steel sleeve due to excessive clamping force.

[0077] Step 30: The driving member 100 drives the clamping member 104 to move based on the target position to remove the steel sleeve; The driver 100 serves as the device's power source and is in transmission connection with the clamping member 104. Once the claw 106 securely engages the steel sleeve, the driver 100 is activated. Based on a preset program or operating instructions, the driver 100 drives the clamping member 104 to operate with the target position as a reference. The power from the driver 100 is transmitted to the clamping member 104, enabling it to overcome the connecting forces (such as friction and the restraining force of the fixing member) with the target position and remove the steel sleeve from the target position. During the extraction process, the output power and movement speed of the driver 100 can be adjusted based on the installation conditions and resistance of the steel sleeve to ensure smooth and safe extraction of the steel sleeve. After the steel sleeve is removed, the driver 100 stops operating. At this point, the expansion shaft 108 is adjusted to move in the opposite direction to the retracted position, releasing the tapered section 142 from the clamping member 106. The clamping member 106 returns to its natural state, facilitating the next steel sleeve extraction operation.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A steel jacket extraction device, characterized in that: include: A driving member (100); A support base (102) for installation at a target location; A clamping member (104) is mounted on the support seat (102), and a plurality of clamping claws (106) are formed on the clamping member (104); an expansion shaft (108) passing through the clamping member (104) and adapted to switch between an expansion position and a contraction position relative to the clamping member (104); in the expansion position, the expansion shaft (108) is adapted to open the clamping claw (106) so that the clamping claw (106) is engaged and adapted with the inner end face of the steel sleeve; in the contraction position, the expansion shaft (108) is adapted to be relatively away from the clamping claw (106); The driving member (100) is transmission-connected to the clamping member (104) to drive the clamping member (104) to move relative to a target position.

2. The steel jacket extraction device according to claim 1, characterized in that: A mounting groove (110) is formed on the support seat (102), a first groove side wall of the mounting groove (110) is suitable for abutting against a target position, a second groove side wall of the mounting groove (110) is provided with an avoidance opening (112), and the clamping member (104) is installed on a side of the support seat (102) corresponding to the avoidance opening (112).

3. The steel jacket extraction device according to claim 2, characterized in that: A first accommodating groove (114) is provided on the support seat (102), a first push rod (116) is movably provided in the first accommodating groove (114), the clamping member (104) is threadedly connected to the first push rod (116), the first push rod (116) is transmission-connected to the driving member (100), and the first push rod (116) is suitable for moving relative to the support seat (102) with the first groove side wall of the mounting groove (110) as a reference under the action of the driving member (100).

4. The steel jacket extraction device according to claim 3, characterized in that: A first limiting portion (118) is formed on the first push rod (116), and a first elastic member (120) is also sleeved on the first push rod (116), with two ends of the first elastic member (120) respectively abutting against the first limiting portion (118) and the first groove side wall of the installation groove (110).

5. The steel jacket extraction device according to claim 3, characterized in that: A connecting section (122) is formed on the first push rod (116), the clamping member (104) is threadedly connected to the connecting section (122), and the expansion shaft (108) is threadedly connected to the clamping member (104).

6. The steel jacket extraction device according to claim 1, characterized in that: The invention also includes an abutting portion (124), wherein the abutting portion (124) is used to abut against a target position, a second receiving groove (126) is formed on the support seat (102), the clamping member (104) is passed through the second receiving groove (126) and is threadedly connected to the support seat (102), and the driving member (100) is suitable for driving the support seat (102) to move relative to the target position with the abutting portion (124) as a reference.

7. The steel jacket extraction device according to claim 6, characterized in that: A second push rod (128) is movably provided in the second accommodating groove (126), and the second push rod (128) includes a protruding section (130), and the protruding section (130) protrudes from the second accommodating groove (126) to form the abutting portion (124).

8. The steel jacket extraction device according to claim 7, characterized in that: An insertion section (132) is formed at one end of the second push rod (128) away from the extending section (130), a step surface (134) is formed between the insertion section (132) and the extending section (130), the insertion section (132) is passed through the second accommodating groove (126), a second limiting portion (136) is formed on the insertion section (132), a second elastic member (138) is sleeved on the insertion section (132), and two ends of the second elastic member (138) respectively abut the second limiting portion (136) and the step surface (134).

9. The steel jacket extraction device according to any one of claims 1 to 8, characterized in that: A mounting hole (140) is formed on the clamping member (104), and the expansion shaft (108) is passed through the mounting hole (140). A tapered section (142) is formed at one end of the expansion shaft (108) close to the clamping claw (106). From the contracted position to the expanded position, the tapered shaft is suitable for squeezing the clamping claw (106) so that the clamping claw (106) is clamped to the inner end surface of the steel sleeve.

10. A method for extracting a steel jacket according to any one of claims 1 to 9, characterized in that: include: Installing the support seat (102) at a target position; The clamping member (104) is inserted into the steel sleeve and the expansion shaft (108) is switched from the contracted position to the expanded position so that the clamping claw (106) is clamped to the inner end surface of the steel sleeve; The driving member (100) drives the clamping member (104) to move with the target position as a reference to remove the steel sleeve.

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