A mainshaft rear bearing puller for transmission repair

Abstract

The utility model belongs to the gearbox maintenance technical field, specifically is a kind of gearbox maintenance main shaft rear bearing puller, including top seat, the surface of top seat is equipped with several annular distribution's sliding slot one, the inside sliding connection of sliding slot one has tension rod, the inside and outside two sides of tension rod are respectively provided with inner grab hook and outer grab hook, the outside wall of inner grab hook is fixedly connected with tension rod, the outside wall of outer grab hook is slidably connected with tension rod, the surface of outer grab hook is equipped with height locking assembly, height locking assembly includes installation groove;The utility model when alternately operating of disassembling bearing inner and outer ring, just need to slide outer grab hook up and down, can change use mode, it is easy to operate, and by rotating single group adjusting screw rod, the position of multiple tension rods can be adjusted synchronously, and the effect of distance adjustment is achieved by using tension rod, to adapt to the disassembly of bearing of different diameters.

Description

Technical Field

[0001] This utility model relates to the field of gearbox repair technology, specifically a gearbox rear bearing puller for gearbox repair. Background Technology

[0002] During gearbox repair, disassembling the rear bearing of the main shaft is a complex and critical task. Traditional bearing disassembly methods often involve rough handling such as hammering or prying with a pry bar. This approach is not only inefficient but also easily damages components such as the main shaft and bearing housing, leading to deformation and surface scratches, which in turn affects the overall performance and service life of the gearbox.

[0003] Furthermore, existing disassembly and puller tools have limited functionality and unreasonable structure. The two-jaw puller has the following problems: the two pull rods are hinged to the crossbeam, allowing them to swing freely. When disassembling bearings, the hooks of the two pull rods are manually hooked onto the bearing, relying on the friction between the hooks and the bearing end face to position the pull rods. Then, the screw is rotated to use the puller's reaction force to pull out the bearing or sleeve-like parts. Due to limited friction, hook detachment frequently occurs during the pulling process. Additionally, when disassembling the inner and outer rings of the bearing alternately, the direction of the pull rod hooks needs to be adjusted, the pull rod removed from the crossbeam, rotated 180 degrees, and then reinstalled on the crossbeam. This is not only labor-intensive and time-consuming but also cumbersome. Therefore, to address the above problems, a main shaft rear bearing puller for gearbox repair is proposed. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this utility model proposes a spindle rear bearing puller for gearbox repair.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A gearbox rear bearing puller for gearbox repair includes a top seat. The surface of the top seat has several annularly distributed sliding grooves. A tension rod is slidably connected inside each groove. An inner hook and an outer hook are respectively provided on the inner and outer sides of the tension rod. The outer side wall of the inner hook is fixedly connected to the tension rod, and the outer side wall of the outer hook is slidably connected to the tension rod. A height locking assembly is installed on the surface of the outer hook. The height locking assembly includes a mounting groove, which is located on the surface of the outer hook. A slider is slidably connected to the inner wall of the mounting groove. An elastic element is fixedly connected to the inner side wall of the slider. The other end of the elastic element is fixedly connected to the inner side wall of the mounting groove. Several positioning pins are fixedly connected to the outer side wall of the slider. Several positioning holes are provided from top to bottom on the side wall of the tension rod for inserting the positioning pins.

[0006] Preferably, the bottom end of the slider is provided with an angle, a connecting groove is provided below the mounting groove, and two sliding grooves are provided on both sides of the connecting groove, and the two sliding grooves are slidably connected to the pressing block.

[0007] Preferably, the pressing block is designed as a right-angled trapezoid, and the top wall of the second sliding groove is slidably connected to an elastic element two, the bottom end of which is fixedly connected to the outer wall of the pressing block.

[0008] Preferably, the number of tension rods is set to three to four.

[0009] Preferably, an adjustment assembly is installed inside the slide groove, the adjustment assembly includes an adjustment screw, one end of the adjustment screw is rotatably connected to the inner wall of the slide groove, and the other end of the adjustment screw passes through the top seat and extends to the outside. A threaded hole is opened on the upper side wall surface of the tension rod, and the adjustment screw is threadedly connected to the threaded hole.

[0010] Preferably, a small toothed ring is fixedly connected to the surface of the adjusting screw, and a large toothed ring is engaged with the lower part of several small toothed rings. The top seat has an annular mounting cavity for accommodating the large toothed ring, and the bottom end of the large toothed ring is slidably connected to the bottom wall of the mounting cavity.

[0011] Preferably, the surface of the top seat has a threaded hole two corresponding to one of the adjusting screws, and the inner wall of the threaded hole two is threaded with a tightening bolt.

[0012] Preferably, a threaded connection hole is provided at the center of the top seat, and a top support screw is threaded into the threaded connection hole.

[0013] The advantages of this utility model are:

[0014] 1. When disassembling the inner and outer rings of a bearing, this utility model allows for easy switching of the usage method by simply sliding the outer hook up and down. It is simple and easy to operate. Furthermore, by rotating a single set of adjusting screws, the positions of multiple sets of tension rods can be adjusted simultaneously, providing the effect of adjustable separation distances to accommodate the disassembly of bearings of different diameters.

[0015] 2. This utility model achieves a stable fixation of the external hook by inserting a positioning pin into the corresponding positioning hole. By pushing the pressing block upward, the positioning pin can be removed from the positioning hole, thereby quickly releasing the fixation of the external hook and achieving the effect of quickly adjusting the position of the external hook and switching the usage mode. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the top seat structure of this utility model;

[0019] Figure 3 This is a partial sectional view of the tension rod of this utility model;

[0020] Figure 4 This is a schematic diagram of the unfolded structure of the pressing block of this utility model;

[0021] Figure 5 This is a sectional view of the top seat of this utility model.

[0022] In the diagram: 1. Top seat; 2. Slide groove one; 3. Pull rod; 4. Inner hook; 5. Outer hook; 6. Height locking assembly; 61. Mounting groove; 62. Slider; 63. Elastic element one; 64. Positioning post; 65. Positioning hole; 66. Slide groove two; 67. Pressing block; 68. Elastic element two; 69. Connecting groove; 7. Adjustment assembly; 71. Adjusting screw; 72. Small toothed ring; 73. Large toothed ring; 9. Tightening bolt; 10. Top support screw. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-5As shown, a gearbox rear bearing puller includes a top seat 1. The surface of the top seat 1 has several annularly distributed grooves 2. A tension rod 3 is slidably connected inside each groove 2. Inner hooks 4 and outer hooks 5 are respectively provided on the inner and outer sides of the tension rod 3. The outer side wall of the inner hook 4 is fixedly connected to the tension rod 3, and the outer side wall of the outer hook 5 is slidably connected to the tension rod 3. A height locking assembly 6 is installed on the surface of the outer hook 5. The height locking assembly 6 includes a mounting groove 61, which is formed on the surface of the outer hook 5. A slider 62 is slidably connected to the inner wall of the mounting groove 61. An elastic element 63 is fixedly connected to the inner side wall of the slider 62. The other end of the elastic element 63 is fixedly connected to the inner side wall of the mounting groove 61. Several inner hooks 4 and outer hooks 5 are fixedly connected to the outer side wall of the slider 62. The positioning post 64 and the side wall of the tension rod 3 are provided with several positioning holes 65 from top to bottom. The positioning holes 65 are used for the positioning post 64 to be inserted. The bottom end of the slider 62 is provided with an angle. A connecting groove 69 is provided below the mounting groove 61. A second sliding groove 66 is provided on both sides of the connecting groove 69. The two second sliding grooves 66 are slidably connected to a pressing block 67. The pressing block 67 is designed as a right trapezoid. An elastic element 68 is slidably connected to the top wall of the second sliding groove 66. The bottom end of the elastic element 68 is fixedly connected to the outer wall of the pressing block 67. A threaded connection hole is provided at the center of the top seat 1. A top support screw 10 is threadedly connected in the threaded connection hole. The first elastic element 63 and the second elastic element 68 can be a steel leaf spring, a coil spring, a torsion bar spring, a rubber spring, etc. In this embodiment, a coil spring is used.

[0025] Specifically, when disassembling the gearbox bearing, the outer hook 5 is fixed at a suitable position on the surface of the tension rod 3. Then, the bearing is hooked by the outer hook 5, and the bottom end of the top support screw 10 is rotated to abut against the main shaft, thereby pulling the bearing upward by the outer hook 5, achieving the effect of disassembling the main shaft bearing. When it is necessary to switch to the inner hook 4, the outer hook 5 is inserted and fixed on the upper side of the tension rod 3 to use the inner hook 4. When disassembling the inner and outer rings of the bearing alternately, this device can change the usage mode simply by sliding the outer hook 5 up and down, making it simple and easy to operate. When the height of the outer hook 5 needs to be adjusted, press the outer hook 5 and push the pressing block 67 upward. The pressing block 67 moves upward and pushes the slider 62 at an angle, thereby pushing the slider 62 to slide inward into the mounting groove 61. The slider 62 slides and drives the positioning pin 64 out of the positioning hole 65, thereby quickly releasing the fixation of the outer hook 5. After moving the outer hook 5 to the appropriate height along the tension rod 3, release the pressing block 67. The pressing block 67 slides downward and is offset from the slider 62 by the elastic force of the second elastic element 68. The slider 62 slides outward by the elastic force of the first elastic element 63, so that the positioning pin 64 is inserted into the corresponding positioning hole 65, thereby achieving the effect of stably fixing the outer hook 5 and achieving the effect of quickly adjusting the position of the outer hook 5 and switching the usage mode.

[0026] The number of tension rods 3 is set to three to four.

[0027] An adjustment assembly 7 is installed inside the slide 1 2. The adjustment assembly 7 includes an adjustment screw 71. One end of the adjustment screw 71 is rotatably connected to the inner wall of the slide 1 2, and the other end of the adjustment screw 71 passes through the top seat 1 and extends to the outside. A threaded hole 1 is opened on the upper side wall surface of the tension rod 3, and the adjustment screw 71 is threadedly connected to the threaded hole 1.

[0028] Specifically, by rotating the adjusting screw 71, the tension rod 3 is driven to slide, and the tension rod 3 slides to adjust the position of the outer hook 5 or the inner hook 4.

[0029] A small toothed ring 72 is fixedly connected to the surface of the adjusting screw 71. A large toothed ring 73 is meshed with the lower part of several small toothed rings 72. An annular mounting cavity for accommodating the large toothed ring 73 is opened inside the top seat 1. The bottom end of the large toothed ring 73 is slidably connected to the bottom wall of the mounting cavity.

[0030] Specifically, by rotating one of the adjusting screws 71, the adjusting screw 71 drives the small toothed ring 72 connected to it to rotate, the small toothed ring 72 drives the large toothed ring 73 to rotate, and when the large toothed ring 73 rotates, it drives the other small toothed ring 72 and the adjusting screw 71 connected to the small toothed ring 72 to rotate, thereby realizing the synchronous rotation of multiple adjusting screws 71. The use of the tension rod 3 has the effect of adjusting the separation distance to adapt to the disassembly of bearings of different diameters.

[0031] The surface of the top seat 1 has a threaded hole 2 corresponding to one of the adjusting screws 71, and the inner wall of the threaded hole 2 is threaded with a tightening bolt 9.

[0032] Specifically, after the adjusting screw 71 is adjusted, the tightening bolt 9 is connected to the threaded hole and pressed against the adjusting screw 71 to achieve the effect of tightening and fixing the adjusting screw 71, thereby improving the stability of the tension rod 3 during use.

[0033] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0034] The working principle is as follows: the outer hook 5 is fixed at a suitable position on the surface of the tension rod 3, and then the bearing is hooked by the outer hook 5. By rotating the top support screw 10, its bottom end is pressed against the main shaft, thereby pulling the bearing upward by the outer hook 5, achieving the effect of disassembling the main shaft bearing. When it is necessary to switch to the inner hook 4, the outer hook 5 is inserted and fixed on the upper side of the tension rod 3, and the inner hook 4 can be used. When disassembling the inner and outer rings of the bearing alternately, this device can change the usage mode simply by sliding the outer hook 5 up and down. The operation is simple and easy to use.

[0035] When the height of the outer hook 5 needs to be adjusted, press the outer hook 5 and push the pressing block 67 upward. The pressing block 67 moves upward and pushes the slider 62 at an angle, thereby pushing the slider 62 to slide inward into the mounting groove 61. The slider 62 slides and drives the positioning pin 64 out of the positioning hole 65, thereby quickly releasing the fixation of the outer hook 5. After moving the outer hook 5 to the appropriate height along the tension rod 3, release the pressing block 67. The pressing block 67 slides downward and is offset from the slider 62 by the elastic force of the second elastic element 68. The slider 62 slides outward by the elastic force of the first elastic element 63, so that the positioning pin 64 is inserted into the corresponding positioning hole 65, thereby achieving the effect of stably fixing the outer hook 5 and achieving the effect of quickly adjusting the position of the outer hook 5 and switching the usage mode.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A spindle rear bearing puller for gearbox repair, comprising a top seat (1), characterized in that: The surface of the top seat (1) is provided with several annularly distributed sliding grooves (2). A tension rod (3) is slidably connected inside the sliding groove (2). An inner hook (4) and an outer hook (5) are respectively provided on both sides of the tension rod (3). The outer side wall of the inner hook (4) is fixedly connected to the tension rod (3), and the outer side wall of the outer hook (5) is slidably connected to the tension rod (3). A height locking component (6) is installed on the surface of the outer hook (5). The height locking component (6) includes a mounting groove (61). The mounting groove (61) is opened on the surface of the outer hook (5). The inner wall of the mounting groove (61) is slidably connected to the slider (62). The inner side wall of the slider (62) is fixedly connected to the elastic element (63). The other end of the elastic element (63) is fixedly connected to the inner side wall of the mounting groove (61). The outer side wall of the slider (62) is fixedly connected to several positioning pins (64). The side wall of the tension rod (3) is provided with several positioning holes (65) from top to bottom. The positioning holes (65) are used for the positioning pins (64) to be inserted.

2. The main shaft rear bearing puller for gearbox repair according to claim 1, characterized in that: The bottom end of the slider (62) is provided with an angle, and a connecting groove (69) is provided below the mounting groove (61). Sliding grooves (66) are provided on both sides of the connecting groove (69), and the two sliding grooves (66) are slidably connected to the pressing block (67).

3. The gearbox rear bearing puller according to claim 2, characterized in that: The pressing block (67) is designed as a right-angled trapezoid, and the top wall of the second sliding groove (66) is slidably connected to the second elastic element (68), and the bottom end of the second elastic element (68) is fixedly connected to the outer wall of the pressing block (67).

4. The rear bearing puller for gearbox repair according to claim 1, characterized in that: The number of tension rods (3) is set to three to four.

5. The main shaft rear bearing puller for gearbox repair according to claim 1, characterized in that: An adjustment assembly (7) is installed inside the slide groove (2). The adjustment assembly (7) includes an adjustment screw (71). One end of the adjustment screw (71) is rotatably connected to the inner wall of the slide groove (2), and the other end of the adjustment screw (71) passes through the top seat (1) and extends to the outside. A threaded hole is provided on the upper side wall surface of the tension rod (3), and the adjustment screw (71) is threadedly connected to the threaded hole.

6. The spindle rear bearing puller for gearbox repair according to claim 5, characterized in that: The surface of the adjusting screw (71) is fixedly connected to a small toothed ring (72), and a large toothed ring (73) is meshed with the lower part of several small toothed rings (72). The top seat (1) has an annular mounting cavity for accommodating the large toothed ring (73), and the bottom end of the large toothed ring (73) is slidably connected to the bottom wall of the mounting cavity.

7. The rear bearing puller for gearbox repair according to claim 5, characterized in that: The surface of the top seat (1) is provided with a threaded hole two corresponding to one of the adjusting screws (71), and the inner wall of the threaded hole two is threaded with a tightening bolt (9).

8. The main shaft rear bearing puller for gearbox repair according to claim 1, characterized in that: A threaded connection hole is provided at the center of the top seat (1), and a top support screw (10) is threadedly connected in the threaded connection hole.

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