Adjustable embedded bearing dismounting puller device

Abstract

The utility model discloses an adjustable puller device for dismounting an embedded bearing, and belongs to the technical field of dismounting of embedded bearings. The device is composed of a disc rod, a pull rod, a supporting rod, a track disc, a supporting base, a jacking device, a bolt, a claw lock and a clamping claw. When the puller device is used for disassembling the lining bearing, the supporting length of the supporting rods below the track disc can be adjusted by using the bolts according to the size, the structure or the special condition of disassembling equipment, so that the three supporting rods can be in good and stable contact with the surface of the equipment through the supporting base. When the two clamping jaws penetrate through a center hole of an embedded bearing, the rotating disc rod enables the pull rod to move downwards, and when the ejector of a trapezoidal table structure on the lower portion of the pull rod makes contact with the inwards-bent clamp backs of the clamping jaws, the two clamping jaws can be ejected outwards, jaws of the two clamping jaws can fully grasp the bottom of the embedded bearing, and finally the pull rod is lifted upwards through the rotating disc rod, so that the embedded bearing is clamped. And then the bearing is lifted out of the embedded structure, so that the stability and efficiency of disassembling the embedded bearing are improved.

Description

Technical Field

[0001] This utility model belongs to the field of embedded bearing disassembly technology, specifically relating to an adjustable embedded bearing disassembly puller device. Background Technology

[0002] With the continuous development and improvement of modern mechanical manufacturing, more and more high-precision equipment adopts embedded bearings. Conventional methods for replacing worn bearings involve hot disassembly, hammering, and pushing, which are difficult and laborious, and can easily damage components such as the spindle. Pullers are commonly used disassembly tools in the field of mechanical equipment maintenance. They are commonly used to disassemble bearings and separate them from the shaft. Pullers can be distinguished by the number of jaws, such as two-jaw pullers and three-jaw pullers; more jaws result in greater stability. During the disassembly process using a puller, rotation is typically employed... Figure 1 The "pan dry 1" in the middle allows the hook to grab the bearing and use a threaded structure to rotate and lift it.

[0003] During the disassembly of embedded bearings, because they are embedded inside the equipment, they cannot be disassembled using pullers with external grippers, unlike exposed bearings, making disassembly more difficult. Currently, some pullers have limited applications; if used for disassembly, due to the varying contours of the equipment, finding suitable support points is sometimes difficult, or the support is unstable. Therefore, to further optimize the disassembly of embedded bearings and improve the stability of the disassembly process, an embedded bearing disassembly device is needed. Utility Model Content

[0004] To address the difficulty of disassembling embedded bearings and improve the stability of using embedded bearing disassembly tools, the present invention aims to provide a more stable adjustable embedded bearing disassembly puller device. This device consists of a disc, pull rod, support rod, track disc, top device, support base, bolts, claw lock, and clamps. All components are made of cast iron.

[0005] The track disk has a cylindrical structure with inwardly oriented circular grooves on both its upper and lower surfaces. The outer contours of these grooves and the track disk form a ring-shaped edge structure. An internally threaded through-hole is located at the center of each circular groove. Near the outer contour of the circular groove, three identical arc-shaped tracks are symmetrically arranged around the internally threaded through-hole. At the center of symmetry of each arc-shaped track is a rectangular track facing the internally threaded through-hole. Each arc-shaped track and its corresponding rectangular track are interconnected and have the same width. The front ends of the three rectangular tracks are equidistant from the internally threaded through-hole. The three arc-shaped tracks and the three rectangular tracks form the track structure of the entire disk surface.

[0006] The coil and the tie rod form a "T" shaped structure. The top of the "T" shaped structure is the coil, and the bottom of the "T" shaped structure is the tie rod with external threads. The tie rod passes through the internal threaded through hole and is installed on the track plate. Rotating the coil can make the tie rod move up and down relative to the track plate. The top device is a "trapezoidal platform" structure that is narrow at the top and wide at the bottom. An internal thread is set in the middle of the "trapezoidal platform" structure, so that the top device is installed at the bottom of the tie rod.

[0007] The claw lock is a ring-shaped structure with two symmetrical rectangular sections on the outer edge. An internal thread is provided on the inner side of the ring-shaped structure, so that the claw lock can be installed on the pull rod above the top device. The rectangular sections have the same height as the ring-shaped structure, and a through hole parallel to the surface of the ring-shaped structure is provided in the rectangular sections.

[0008] The gripper consists of two jaws, forming a single, integrated structure with an elongated top and inwardly curved jaws at the bottom. A through groove is located at the top of the elongated structure, and circular through holes are located on the sides of the groove. The width of the groove is slightly larger than the width of the rectangular section in the gripper lock, and the diameter of the circular through holes matches the inner diameter of the through holes in the rectangular section. A cylindrical pin is used to mount the elongated structure of the gripper onto the rectangular section, allowing the gripper to rotate along the rectangular section of the gripper lock. The two grippers are symmetrically positioned on the outside of the pusher, with the distance between the jaws at the bottom of the two grippers being less than the bottom diameter of the pusher. When the pusher 6 moves downward with the pull rod, it pushes the two grippers outward, causing the jaws to hook onto the bottom of the embedded bearing.

[0009] There are three support rods, all cylindrical in shape, with an outer diameter matching the width of the curved and rectangular tracks in the track panel. The support rods move within these tracks. At the top of each support rod is a stop structure with an integrated outer diameter larger than the rod itself, preventing it from falling off the track. At the bottom of each support rod is a support base, with an embedded threaded mounting hole at its center. The support base has parallel upper and lower surfaces and curved sides, forming a frustum-shaped structure. An anti-slip pad is installed on the lower surface of the support base to increase slip resistance and friction when the support rod is under load, thus enhancing its stability. A threaded rod, matching the size of the threaded mounting hole at the bottom of the support rod, is welded to the center of the upper surface of the support base, thus assembling the support base and the support rod. The part of the support rod that passes through the track of the track disk has an external thread structure. Bolts are installed on the support rod below the track disk. The outer diameter of the bolts is larger than the width of the track disk. By rotating the bolts, the support length of the support rod below the track disk can be adjusted. That is, when the outer shell of the equipment containing the embedded bearing to be disassembled is uneven, the support length of the three support rods can be adjusted by adjusting the bolts to find the appropriate height, position, and angle for each support.

[0010] The working principle and beneficial effects of this utility model:

[0011] When using this puller to disassemble the inner bearing, the support length of the support rods under the track plate can be adjusted using bolts, depending on the size, structure, or special circumstances of the disassembly equipment (due to irregular designs, uneven surfaces, and varying relative positions of some equipment shells). This ensures that all three support rods can maintain good and stable contact with the equipment surface via the support base. The jaws of the two grippers face outwards. When the two grippers pass through the center hole of the inner bearing, rotating the disc rod moves the pull rod downwards. When the "trapezoidal platform" structure at the bottom of the pull rod contacts the inwardly bent back of the grippers, it pushes the two grippers outwards, allowing the jaws to fully grip the bottom of the inner bearing, thereby improving the stability and efficiency of disassembling the inner bearing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the embedded bearing disassembly puller device described in this utility model;

[0013] Figure 2 A bottom view of the track disc in the puller device for removing the embedded bearing;

[0014] Figure 3 Top view of the track plate in the puller device for removing embedded bearings;

[0015] Figure 4 A schematic diagram of the structure of the puller, pull rod, and top device for disassembling the embedded bearing puller;

[0016] Figure 5 This is a schematic diagram of the support rod structure in the internal bearing disassembly puller, where (a) is the front view of the support rod and (b) is a schematic diagram of the bottom structure of the support rod.

[0017] Figure 6 A schematic diagram of the support base structure in the puller device for removing embedded bearings;

[0018] Figure 7 This is a schematic diagram of the claw lock structure in the internal bearing disassembly puller, where (a) is a top view of the claw lock and (b) is a side view of the claw lock.

[0019] Figure 8 A schematic diagram of the two gripper structures in the puller device for removing embedded bearings. Detailed Implementation

[0020] Example 1

[0021] like Figure 1 As shown, the names of each part are: Disc 1, Tie rod 2, Support rod 3, Track disc 4, Support base 5, Top device 6, Bolt 7, Claw lock 8, Clamping claw 9.

[0022] like Figure 2 and Figure 3 As shown, the track disk 4 has a cylindrical structure with circular grooves on both its upper and lower surfaces. An annular edge structure is formed between the outer contour of the circular grooves and the outer contour of the track disk 4. An internally threaded through-hole is located at the center of the circular groove. Three arc-shaped tracks of identical structure and size are symmetrically arranged around the internally threaded through-hole near the outer contour of the circular groove. A rectangular track facing the internally threaded through-hole is located at the center of symmetry of each arc-shaped track. Each arc-shaped track and its corresponding rectangular track are interconnected and have the same width. The front ends of the three rectangular tracks are equidistant from the internally threaded through-hole. The three arc-shaped tracks and the three rectangular tracks form the track structure of the entire disk surface.

[0023] like Figure 4 As shown, the disc 1 and the pull rod 2 form a "T" shaped structure. The top of the "T" shaped structure is the disc 1, and the bottom of the "T" shaped structure is the pull rod 2 with external threads. The pull rod 2 is installed on the track plate 4 through the internal thread through hole. Rotating the disc 1 can make the pull rod 2 move up and down relative to the track plate 4. The top device 6 is a "trapezoidal platform" structure that is narrow at the top and wide at the bottom. An internal thread is provided in the middle of the "trapezoidal platform" structure, so that the top device 6 is installed at the bottom of the pull rod 2.

[0024] like Figure 5 and Figure 6 As shown, there are three support rods 3, all of which are cylindrical structures. Their outer diameter is the same as the width of the arc-shaped track and the rectangular track in the track plate 4. The support rods 3 move in the track. The top of the support rod 3 is provided with a "stop" structure with an outer diameter larger than the support rod body, which can prevent the support rod 3 from falling off the track. The bottom of the support rod 3 is provided with a support base 5 integrated with the support rod 3. An embedded threaded mounting hole is provided at the center of the bottom of the support rod 3. The support base 5 has a "frustum" structure with parallel upper and lower surfaces and arc-shaped sides. The lower surface of the support base 5 is equipped with an anti-slip pad, which increases the anti-slip and friction when the support rod 3 is supported by force, making the support rod 3 more stable. A threaded rod, matching the size of the threaded mounting hole at the bottom of the support rod 3, is welded to the center of the upper surface of the support base 5, thus assembling the support base 5 and the support rod 3. The part of the support rod 3 that passes through the track of the track disk 4 has an external thread structure. Bolts 7 are installed on the support rod 3 below the track disk 4. The outer diameter of bolt 7 is larger than the width of the track disk 4. The support length of the support rod 3 below the track disk 4 can be adjusted by rotating bolt 7. That is, when the outer shell of the equipment containing the embedded bearing that needs to be disassembled is uneven, the support length of the three support rods 3 can be adjusted by bolt 7 to find the appropriate height, position, and angle for each support rod.

[0025] like Figure 7As shown, the claw lock 8 is an "annular" structure with two symmetrical rectangular sections on the outer edge. An internal thread is provided on the inner side of the "annular" structure, so that the claw lock 8 can be installed on the pull rod 2 above the top device 6. The rectangular sections have the same height as the "annular" structure, and a through circular hole parallel to the surface of the "annular" structure is provided in the rectangular sections.

[0026] like Figure 8 As shown, there are two grippers 9, which are integral structures with an elongated top and an inwardly curved back and outwardly facing jaws. A through groove is provided at the top of the elongated structure, and circular through holes are provided on both sides of the groove wall. The width of the groove is slightly larger than the width of the rectangular section in the gripper lock 8, and the diameter of the circular through holes is the same as the inner diameter of the through holes in the rectangular section. A cylindrical pin is used to install the elongated structure of the gripper 9 onto the rectangular section, allowing the gripper 9 to rotate along the rectangular section of the gripper lock 8. The two grippers 9 are symmetrically positioned outside the top member 6, and the distance between the bottom jaws of the two grippers 9 is less than the bottom diameter of the top member 6. When the top member 6 moves downward with the pull rod 2, it pushes the two grippers 9 outward, causing the jaws of the two grippers 9 to hook onto the bottom of the embedded bearing.

[0027] During the disassembly process, first adjust the position of the support rod 3 according to the equipment to be disassembled to find a stable support point. Then, move the lower part of the pull rod 2 with the jaws 9 through the center of the embedded bearing. Rotate the disc 1 to make the pull rod 2 move downward first. When the "top device 6" on the pull rod 2 contacts the inner side of the jaws at the end of the jaws 9, push the two jaws 9 outward so that the jaws of the two jaws 9 hook onto the bottom of the embedded bearing. Then, pull upward with force to make the jaws of the jaws 9 hook tightly onto the bottom of the embedded bearing. Finally, pull the pull rod 2 upward by rotating the disc 1 to pull the bearing out of the embedded structure.

Claims

1. An adjustable embedded bearing removal puller, characterized in that: It consists of a disc (1), a tie rod (2), a support rod (3), a track disc (4), a top device (5), a support base (6), bolts (7), a claw lock (8), and a clamp (9). Among them, the track disk (4) is a cylindrical structure, with circular grooves on both its upper and lower surfaces. The outer contour of the circular grooves and the outer contour of the track disk (4) form an annular edge structure. An internal threaded through hole is provided in the center of the circular groove. Three arc-shaped tracks with the same structure and size are symmetrically arranged around the internal threaded through hole near the outer contour of the circular groove. A rectangular track facing the internal threaded through hole is provided at the center of symmetry of each arc track. Each arc track and its corresponding rectangular track are interconnected and have the same width. The front ends of the three rectangular tracks are equidistant from the internal threaded through hole. The coil (1) and the pull rod (2) form a "T" shaped structure. The top of the "T" shaped structure is the coil (1), and the bottom of the "T" shaped structure is the pull rod (2) with external threads. The pull rod (2) passes through the internal thread through hole and is installed on the track plate (4). The top device (5) is a "trapezoidal platform" structure that is narrow at the top and wide at the bottom. The top device (5) is installed at the bottom of the pull rod (2). The claw lock (8) is a "ring" structure with two symmetrical rectangular sections on the outer edge. The claw lock (8) is installed on the pull rod (2) above the top device (5). The rectangular sections have the same height as the "ring" structure. A through circular hole parallel to the surface of the "ring" structure is provided in the rectangular section. There are two grippers (9), which are an integral structure with a long strip at the top and the bottom jaws bent inward and the jaws facing outward. A through groove is provided at the top of the long strip structure, and circular through holes are provided on the two sides of the groove. The long strip structure of the gripper (9) is installed on the rectangular section using a cylindrical pin. The two grippers (9) are symmetrically placed on the outside of the top device (5), and the distance between the bottom jaws of the two grippers (9) is less than the bottom diameter of the top device (5). There are three support rods (3), all of which are cylindrical structures. Their outer diameter is the same as the width of the arc track and the rectangular track in the track disk (4). The support rods (3) move in the arc track and the rectangular track. The top of the support rod (3) is provided with a "stop" structure with an outer diameter larger than the body of the support rod (3). The bottom of the support rod (3) is provided with a support base (6) integrated with the support rod (3). The support base (6) is a "frustum" structure with parallel upper and lower surfaces and arc-shaped sides. The part of the support rod (3) that passes through the track of the track disk (4) is an external thread structure. The bolt (7) is installed on the support rod (3) below the track disk (4). The outer diameter of the bolt (7) is larger than the track width of the track disk (4).

2. The adjustable embedded bearing removal puller as described in claim 1, characterized in that: An internal thread is provided in the middle of the "trapezoidal platform" structure, so that the top device (5) is installed at the bottom of the tie rod (2).

3. The adjustable embedded bearing removal puller as described in claim 1, characterized in that: An internal thread is provided on the inside of the "ring" structure, so that the claw lock (8) is installed on the pull rod (2) above the top device (5).

4. The adjustable embedded bearing removal puller as described in claim 1, characterized in that: The width of the groove is slightly larger than the width of the rectangular section in the claw lock (8). The diameter of the circular through hole is consistent with the inner diameter of the through hole in the rectangular section. The long strip structure of the claw (9) is installed on the rectangular section using a cylindrical pin.

5. The adjustable embedded bearing removal puller as described in claim 1, characterized in that: An embedded threaded mounting hole is provided at the center of the bottom of the support rod (3). A threaded rod that matches the size of the threaded mounting hole at the bottom of the support rod (3) is welded at the center of the upper surface of the support base (6) to assemble the support base (6) and the support rod (3).

6. The adjustable embedded bearing removal puller as described in claim 1, characterized in that: An anti-slip pad is installed on the lower surface of the support base (6).

7. The adjustable embedded bearing removal puller as described in claim 1, characterized in that: The coil (1), tie rod (2), support rod (3), track plate (4), top device (5), support base (6), bolt (7), claw lock (8) and clamp (9) are made of cast iron.

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