Bearing outer ring dismounting tool of small-space gear box

Abstract

The utility model discloses a bearing outer ring dismounting tool of small space gear box, including support rod, adjusting ring, pressing buckle, support rod includes longitudinal rod and horizontal installation piece, the lower end of longitudinal rod is fixedly connected with horizontal installation piece, there are at least two pressing buckle, and the pressing buckle is distributed on the periphery of longitudinal rod, and the pressing buckle is fixed on the longitudinal rod. The transverse installation pieces are connected with one ends of the pressing buckles through pin shafts respectively, so that the pressing buckles can swing in the radial direction, the longitudinal rods are movably sleeved with the adjusting rings, the lower ends of the adjusting rings are provided with outer conical surfaces, the inner sides of the other ends of the pressing buckles are provided with inner conical surfaces matched with the outer conical surfaces, and the outer sides of the other ends of the pressing buckles are provided with protruding edges outwards in the radial direction. According to the bearing outer ring disassembling device, the bearing outer ring can be pressed out on the premise that a bearing is not damaged by converting bearing outer ring press-fitting force under various narrow gaps into radial supporting force, the problem of disassembling the bearing outer ring in a small space is solved, and the bearing outer ring can be disassembled under the condition that a shell and the bearing outer ring are not damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear box assembly, and in particular relates to a tooling structure for disassembling an outer ring of a gear box bearing in a small space. Background Art

[0002] The press tool is an auxiliary device used during the assembly and disassembly process of gearbox samples. After the product components are accurately placed through various pre-positioning, the components are assembled or disassembled by manual press or servo press.

[0003] In the actual production process, due to the differences and particularities of gearbox design, the relative installation position clearance of many bearings is very small. Since the inner ring of the bearing and the shaft are generally interference fit, the force required for disassembly is very large. On the other hand, due to the irregularity of the housing, the bearing shoulder is often not round, and conventional tools cannot be used in many spaces. Disassembly is often carried out by damaging and cutting, and the bearing cannot be completely disassembled. Utility Model Content

[0004] In order to solve the problem that the installation clearance of the gear box bearing is too small and the overall disassembly cannot be performed using conventional tools, the utility model provides a tool for disassembling the bearing outer ring of a small-space gear box.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A tool for disassembling the outer ring of a bearing of a small space gear box, comprising a support rod, an adjusting ring, and a buckle. The support rod comprises a longitudinal rod and a transverse mounting piece. The lower end of the longitudinal rod is fixedly connected to the transverse mounting piece. At least two buckles are provided and dispersedly arranged on the periphery of the longitudinal rod. The transverse mounting pieces are respectively connected to one end of the buckles through a pin shaft so that the buckles can swing radially. The adjusting ring is movably sleeved on the longitudinal rod. The lower end of the adjusting ring is provided with an outer conical surface. The inner side of the other end of the buckle is provided with an inner conical surface matching the outer conical surface. The outer side of the other end of the buckle is provided with a convex edge radially outward.

[0007] Furthermore, the support rod is in an inverted T shape, the transverse mounting member is a transverse rod, the lower end of the longitudinal rod is fixedly connected to the middle part of the transverse rod, the number of the buckles is 2, which are symmetrically arranged on both sides of the longitudinal rod, and the two ends of the transverse rod are connected to the buckles by pins.

[0008] Furthermore, the longitudinal rod is a screw rod with an external thread on the outer side, and the inner side of the adjustment ring is provided with an internal thread matching the external thread of the longitudinal rod, and the adjustment ring slides up and down through the screw rod.

[0009] Furthermore, a pressure head is provided on the top of the support rod, and the upper surface of the pressure head is a plane perpendicular to the support rod.

[0010] Furthermore, the convex edge of the buckle is wedge-shaped.

[0011] Furthermore, the outer end of the transverse rod adopts a symmetrical middle slot structure, the axle pin is installed in the middle slot perpendicular to the radial direction, and the end of the buckle is located in the middle slot.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model discloses a small space gearbox bearing outer ring disassembly tool, which solves the problem of disassembling a small space bearing outer ring, and ensures that the bearing outer ring can be disassembled for later analysis without damaging the housing and the bearing itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the tooling for disassembling the outer ring of the bearing of a small space gearbox;

[0015] Figure 2 This is the appearance of the bearing outer ring removal tool for a small space gearbox;

[0016] Figure 3 This is a diagram showing the use of a tool for removing the outer ring of a bearing of a small space gearbox.

[0017] Markings in the figure: 1-pressure head, 2-inverted T-shaped support rod, 3-adjusting ring, 4-press buckle, 5-axle pin, 6-housing; 7-bearing inner ring; 8-bearing outer ring. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] Gearbox designs are diverse and particular. The relative installation position clearances of many bearings are particularly small. Since the inner ring of the bearing and the shaft are generally interference fit, the force required for disassembly is very large. At the same time, the housing is irregular, and the bearing shoulders are often not regular circles. Conventional disassembly tools are various types of pullers, which cannot be used in many spaces and can often only be disassembled by damaging and cutting, which makes it impossible to obtain a complete disassembled bearing.

[0020] The utility model can accurately adjust the opening size to adapt to different bearings by designing two buckles that can swing along the shaft pin and an adjusting ring that can be accurately adjusted up and down along the screw rod. At the same time, the conical slope of the adjusting ring can provide sufficient supporting force for the buckle. The external pressure is transmitted to the cross-section of the outer ring of the bearing through the claws of the buckle and the supporting force of the adjusting ring, thereby pressing the outer ring of the bearing out.

[0021] Specifically, the structure of the tooling for disassembling the bearing outer ring of a small space gearbox of the utility model is as follows: Figure 1-2 As shown, it mainly includes a support rod, an adjustment ring, and a buckle. Among them:

[0022] The support rod includes a longitudinal rod and a transverse mounting member, and the adjusting ring 3 is movably sleeved on the longitudinal rod, and the adjusting ring 3 can slide along the longitudinal rod. In order to achieve accurate adjustment and positioning of the adjusting ring 3, the longitudinal rod in this embodiment is preferably a screw with an external thread on the outside, and the inner side of the adjusting ring 3 is provided with an internal thread matching the external thread of the longitudinal rod, and the adjusting ring 3 slides up and down through the screw. The adjusting ring 3 adjusts the diameter between the two buckles by sliding the screw up and down.

[0023] The lower end of the longitudinal rod is fixedly connected to the transverse mounting member, and the transverse mounting member is connected to one end of the buckle 4 through the pin 5, so that the buckle 4 can swing in the radial direction. There are at least two buckles 4, which are dispersedly arranged on the periphery of the longitudinal rod. According to the working principle of the utility model, the number of buckles 4 can be more than two. This embodiment only takes two buckles 4 as an example for explanation. When the number of buckles 4 is two, the support rod can be set as follows: Figure 1-2 The inverted T-shaped support rod 2 shown includes a longitudinal rod and a transverse rod, the lower end of the longitudinal rod is fixedly connected to the middle of the transverse rod, the buckle 4 is symmetrically arranged on both sides of the longitudinal rod, and the two ends of the transverse rod are connected to the buckle by a pin 5. The outer end of the transverse rod preferably adopts a symmetrical middle slot structure to ensure that the shaft pin is balanced. The middle slot is formed between the two side plates, and the shaft pin 5 is installed on the two side plates perpendicular to the radial direction and is located in the middle slot. The buckle 4 is sheet-shaped and hinged to the shaft pin 5, and the hinged end is located in the middle slot. The size of the buckle is processed according to the bearing installation clearance and the inner diameter of the bearing outer ring. The head contour size of the buckle is processed into various special shapes according to the bearing installation position space. The buckle swings with the shaft pin as the center of the circle during the adjustment of the adjustment ring up and down. At the appropriate position, the adjustment ring is locked, and the buckle clamps the outer ring of the bearing, and the outer ring of the bearing is pressed out by a press or knocking.

[0024] The lower end of the adjusting ring 3 is provided with an outer conical surface, the inner side of the other end of the buckle 4 is provided with an inner conical surface matching the outer conical surface of the adjusting ring 3, and the outer side of the other end of the buckle 4 is provided with a convex edge protruding radially outward. In this embodiment, the buckle 4 is processed into a wedge shape according to the bearing installation clearance (i.e., the clearance between the bearing and the housing) to ensure that the contact surface with the outer ring of the bearing is level in the clamped state, and the housing surface gives way reasonably. The conical surface structure at the lower end of the adjusting ring 3 facilitates the smooth swing of the buckle and increases the force-bearing area.

[0025] A pressing head 1 is arranged on the top of the inverted T-shaped supporting rod 2 , and the upper surface of the pressing head 1 is a plane perpendicular to the inverted T-shaped supporting rod 2 .

[0026] When using, Figure 3As shown, first adjust the adjusting ring 3 to the pressure head 1 so that the buckle 4 is close to the screw, and the entire tooling passes through the housing 6 and the front end bearing (bearing inner ring 7); after the tooling is in place (reaching the position of the bearing outer ring), the adjusting ring 3 moves downward along the screw, and the front cone surface contacts the end face of the buckle 4, the buckle 4 expands outward, and the front end pressure head extends into the gap between the bearing and the housing, buckling the end face of the bearing outer ring 8; after the adjusting ring 3 contacts the buckle 4, it moves further downward and is pressed and locked by the force of the screw; tighten the pressure head 1, with the top perpendicular to the screw, and the bearing outer ring is pressed out by the press.

[0027] The utility model discloses a tool for disassembling the outer ring of a bearing of a small space gearbox. By converting the pressing force of the outer ring of the bearing under various narrow gaps into a radial supporting force, the outer ring of the bearing can be pressed out without damaging the bearing, thereby solving the problem of disassembling the outer ring of the bearing in a small space and ensuring that the outer ring of the bearing can be disassembled without damaging the housing and the bearing itself.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tool for disassembling the outer ring of a bearing of a small space gearbox, characterized in that: It includes a support rod, an adjusting ring, and a buckle. The support rod includes a longitudinal rod and a transverse mounting piece. The lower end of the longitudinal rod is fixedly connected to the transverse mounting piece. At least two buckles are provided and are dispersedly arranged on the periphery of the longitudinal rod. The transverse mounting pieces are respectively connected to one end of the buckles through pins so that the buckles can swing radially. The adjusting ring is movably sleeved on the longitudinal rod. The lower end of the adjusting ring is provided with an outer conical surface. The inner side of the other end of the buckle is provided with an inner conical surface matching the outer conical surface. The outer side of the other end of the buckle is provided with a convex edge radially outward.

2. The tool for disassembling the bearing outer ring of a small space gearbox according to claim 1, characterized in that: The support rod is in an inverted T shape, the transverse mounting member is a transverse rod, the lower end of the longitudinal rod is fixedly connected to the middle of the transverse rod, the number of the buckles is 2, which are symmetrically arranged on both sides of the longitudinal rod, and the two ends of the transverse rod are connected to the buckles by pins.

3. The tool for disassembling the bearing outer ring of a small space gearbox according to claim 1, characterized in that: The longitudinal rod is a screw rod with an external thread on the outer side, the inner side of the adjusting ring is provided with an internal thread matching the external thread of the longitudinal rod, and the adjusting ring slides up and down through the screw rod.

4. The tool for disassembling the bearing outer ring of a small space gearbox according to claim 1, characterized in that: A pressure head is arranged on the top of the support rod, and the upper surface of the pressure head is a plane perpendicular to the support rod.

5. The tool for disassembling the bearing outer ring of a small space gearbox according to claim 1, characterized in that: The convex edge of the buckle is wedge-shaped.

6. The tool for disassembling the bearing outer ring of a small space gearbox according to claim 2, characterized in that: The outer end of the transverse rod adopts a symmetrical middle slot structure, the shaft pin is installed in the middle slot perpendicular to the radial direction, and the end of the buckle is located in the middle slot.

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