Screw type bearing disassembling and taking device

Abstract

The utility model provides a screw type bearing disassembling and taking device, and belongs to the technical field of bearing disassembling and assembling. Comprising a screw rod, a baffle plate, a nut, a baffle block and a stress rotary drum, one end of the screw rod is fixedly connected with one side of a stop block, and the other side of the stop block is fixedly connected with a stress rotating drum; a force application lever is sleeved with the stress rotating drum; the other end of the screw rod is sleeved with an annular separation blade and is in threaded connection with a nut; a bearing storage cavity is formed in the side, fixedly connected with the screw rod, of the stop block, and a sunken type stepped stop structure is arranged at the opening end of the bearing storage cavity. According to the utility model, the characteristics of pulling force of the screw rod and multidirectional force application of the stressed rotary drum and the nut are utilized, so that the device is suitable for high-precision scenes, the unbalance loading risk is reduced, and the deformation of the bearing or the shaft body caused by uneven stress during disassembly or assembly is avoided; threaded propulsive force is combined with the positioning function of the blocking piece and the limiting rotating shaft to adapt to application scenes with serious space limitation or high resistance, the operation height of the stress rotating drum is flexibly adjusted, other machine parts do not need to be disassembled in a large number, and the disassembly and assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing dismounting technical field, concretely relates to a screw rod type bearing puller. BACKGROUND

[0002] The center bearing of the bottle making machine is located in a narrow area inside the equipment, and it is difficult for the traditional tool to apply force vertically. The force is uneven, and the impact type dismounting can cause bearing deformation and even damage the main shaft of the equipment. The dismounting process requires the cooperation of multiple people, takes a long time, affects the continuity of production, and reduces production efficiency. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem of the prior art that the center bearing of the bottle making machine is difficult to dismount, and provides a screw rod type bearing puller.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A screw rod type bearing puller, comprising a screw rod, a baffle, a nut, a stop block and a force receiving drum, one end of the screw rod is fixedly connected with one side of the stop block, the other side of the stop block is fixedly connected with the force receiving drum, a force applying lever is sleeved in the force receiving drum, the other end of the screw rod is sleeved with a ring-shaped baffle and is threadedly connected with a nut, a bearing storage cavity is formed in one side of the stop block fixedly connected with the screw rod, and an inwardly recessed stepped stop structure is arranged at the opening end of the bearing storage cavity.

[0006] Further, a limiting rotating shaft is sleeved on the screw rod, an inwardly recessed stepped stop structure is arranged at one end of the limiting rotating shaft, and a sleeve shaft that is in clearance fit with the screw rod is fixedly connected to the other end of the limiting rotating shaft, and a positioning hole is formed through the sleeve shaft.

[0007] Further, at least three through holes are formed in the screw rod, and the limiting rotating shaft is detachably fixed on the screw rod by passing through the positioning hole and cooperating with the through holes through a pin shaft.

[0008] Preferably, a ring-shaped arc-shaped groove is formed in one side of the baffle.

[0009] Further, a clamping groove that cooperates with the nut is formed in the other side of the baffle, and a ring-shaped arc-shaped groove is also formed in the other side of the baffle.

[0010] Further, the force receiving drum is a single-cylinder double-pass structure.

[0011] Preferably, the force receiving rotating drum is a vertical intersecting double drum four-way structure.

[0012] Further, the pin shaft tail is provided with an anti-falling hole; and an R-shaped anti-falling clamp is arranged in the anti-falling hole.

[0013] Compared with the prior art, the utility model discloses a screw rod tension and force receiving rotating drum and nut multi-directional force characteristics, suitable for high-precision scene, reduce the risk of partial load, avoid disassembly or installation when the uneven stress leads to the deformation of bearing or shaft body, the thread propulsion force is combined with the positioning function of the baffle and the limiting rotating shaft, and the application scene of narrow space limitation or high resistance is adapted, the operation height of the force receiving rotating drum is flexibly adjusted according to the degree of space limitation, a large number of other machine parts do not need to be disassembled, and the dismounting efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further explained in detail in combination with the drawings.

[0015] Figure 1 The front view of the embodiment 1 of the utility model is shown in the figure.

[0016] Figure 2 The three-dimensional structure schematic diagram of the embodiment 1 of the utility model is shown in the figure.

[0017] Figure 3 The three-dimensional sectional structure schematic diagram of the embodiment 1 of the utility model is shown in the figure.

[0018] Figure 4 The three-dimensional structure schematic diagram of the stop block of the embodiment 1 of the utility model is shown in the figure.

[0019] Figure 5 The three-dimensional structure schematic diagram of the baffle of the utility model is shown in the figure.

[0020] Figure 6 The three-dimensional structure schematic diagram of the embodiment 2 of the utility model is shown in the figure.

[0021] Figure 7 The three-dimensional sectional structure schematic diagram of the limiting rotating shaft of the embodiment 2 of the utility model is shown in the figure.

[0022] Wherein, 1-screw rod, 11-through hole, 2-baffle, 21-annular arc groove, 22-clamping groove, 3-nut, 4-stop block, 41-bearing storage cavity, 5-force receiving rotating drum, 6-force applying lever, 7-intruding type stepped stop structure, 71-stop surface, 8-hollow shaft, 81-bearing, 9-limiting rotating shaft, 91-sleeve shaft, 92-positioning hole, 93-pin shaft, 94-anti-falling hole, 95-R-shaped anti-falling clamp. DETAILED DESCRIPTION

[0023] For better understanding of the present application, the content of the present application will be further clarified below in conjunction with examples, but the protection content of the present application is not limited to the following examples. In the following description, a large number of specific details are given in order to provide a more complete understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details.

[0024] Embodiment 1, refer to Figures 1-5 A screw bearing dismounting device, comprising a screw rod 1, a baffle 2, a nut 3, a block 4 and a force receiving cylinder 5, one end of the screw rod 1 is fixedly connected with one side of the block 4, the other side of the block 4 is fixedly connected with the force receiving cylinder 5, the force receiving cylinder 5 is sleeved with a force applying lever 6 inside, the other end of the screw rod 1 is sleeved with the annular baffle 2 and is threadedly connected with the nut 3, one side of the block 4 fixedly connected with the screw rod 1 is provided with a bearing storage cavity 41, and an inwardly recessed stepped stop structure 7 is arranged at the opening end of the bearing storage cavity 41. The wall thickness of the stop portion of the inwardly recessed stepped stop structure 7 is smaller than the wall thickness of the hollow shaft 8 to be operated and disassembled.

[0025] Preferably, the baffle 2 is provided with an annular arc-shaped groove 21 on one side. The design of the annular arc-shaped groove 21 makes the force of the bearing 81 more uniform during dismounting and installation, and the force of the bearing is concentrated on the outer ring of the bearing 81, avoiding deformation or damage of the bearing 81 due to the force of the inner and outer rings of the bearing 81, affecting the service life.

[0026] Further, the other side of the baffle 2 is provided with a clamping groove 22 matched with the nut 3 and also provided with an annular arc-shaped groove 21. This design converts the main friction force between the nut 3 and the baffle 2 into direct friction force between the baffle and the bearing 81 to be dismounted, which helps to maintain the force balance of the bearing 81 to be dismounted during screw pulling.

[0027] Further, the force receiving cylinder 5 is a single-cylinder double-pass structure.

[0028] When the bearing is disassembled, one end of the screw rod 1 is inserted into the hollow shaft 8 to be operated and disassembled, the recessed stepped stop structure 7 provided on one side of the stop block 4 is sleeved on the outside of the hollow shaft 7 to be operated and disassembled; the stop surface 71 of the recessed stepped stop structure 7 is in pressure abutment with the end face of the hollow shaft 8 to be operated and disassembled; only one side of the annular arc-shaped groove 21 of the stop piece 2 is provided, and the stop piece 2 is sleeved on one end of the screw rod 1 in the direction of the bearing to be disassembled, and then the nut 3 is sleeved and preloaded and tightened to be clamped in the clamping groove 22; when the stop piece 2 has sufficient abutment pressure with the bearing 81 to be disassembled, the nut 3 is fixed relative to the hollow shaft 8 to be operated and disassembled, the force lever 6 is inserted into the force receiving cylinder 5 for tightening rotation, and at this time the recessed stepped stop structure stop surface 71 rotates relative to the abutment end face of the hollow shaft 8. The disassembled bearing 81 is gradually moved upward under the pushing of the stop piece 2, until it contacts another disassembled bearing, and the two bearings 81 are pushed out of the hollow shaft into the bearing storage cavity 41 on one side of the stop block 4.

[0029] When the bearing is installed, one end of the screw rod 1 is inserted into the hollow shaft 8 to be operated and disassembled, the recessed stepped stop structure 7 provided on one side of the stop block 4 is sleeved on the outside of the hollow shaft 8 to be operated and disassembled; the stop surface 71 of the recessed stepped stop structure stop is in pressure abutment with the end face of the hollow shaft 8 to be operated and disassembled; the bearing 81 to be installed and the stop piece 2 are sequentially sleeved on one end of the screw rod, and then the nut 3 is sleeved and preloaded and tightened, and according to the current operation space limited condition, the force lever 6 is inserted into the force receiving cylinder 5 for tightening and advancing, the advancing force of the threaded part is used to slowly press the bearing 81 into the predetermined installation position of the hollow shaft 8; or the nut 3 is tightened by a tool, and the advancing force of the threaded part can also be used to slowly press the bearing 81 into the predetermined installation position of the hollow shaft 8. When another bearing needs to be installed, the device can be inverted and used.

[0030] Compared with the prior art, the embodiment utilizes the characteristics of screw rod tension, force receiving cylinder and nut multi-directional force, is suitable for high-precision scenes, reduces the risk of uneven load, and avoids deformation of the bearing or shaft body due to uneven force during disassembly or installation.

[0031] Embodiment 2, see Figures 5-7 The embodiment is improved on the basis of embodiment 1.

[0032] Further, a limiting rotating shaft 9 is sleeved on the screw rod 1; one end of the limiting rotating shaft 9 is also provided with a recessed stepped stop structure 7, and the other end is fixedly connected with a sleeve shaft 91 which is in gap cooperation with the screw rod 1; a positioning hole 92 is provided through the sleeve shaft 91. The wall thickness of the recessed stepped stop structure stop 71 is smaller than the wall thickness of the hollow shaft 8 to be operated and disassembled.

[0033] Further, the screw rod 1 is provided with at least three through holes 11, and the limiting rotating shaft 9 is detachably fixed on the screw rod 1 by penetrating the positioning hole 92 through the pin shaft 93 and cooperating with the through hole 11. In this way, the position of the abutting position between the hollow shaft 8 of the bearing to be disassembled and the limiting rotating shaft 9 relative to the screw rod 1 can be changed according to the current limited disassembly operation space, so that the position height of the force receiving rotating drum 5 can be flexibly adjusted, a more convenient force applying angle can be provided, unnecessary disassembly of machine parts is reduced, and the bearing replacement efficiency is improved.

[0034] Preferably, the force receiving rotating drum 5 is a vertical intersecting double-cylinder four-way structure. The four-way structure can provide more force applying angles when used in a space-limited equipment position, thereby facilitating the operation.

[0035] Further, the tail of the pin shaft 93 is provided with an anti-falling hole 94, and the anti-falling hole 94 is provided with an R-shaped anti-falling clamp 95.

[0036] When the bearing is disassembled in the embodiment, one end of the screw rod 1 is inserted into the hollow shaft 8 of the bearing to be operated and disassembled, and the one end of the limiting rotating shaft 9 is sleeved outside the hollow shaft 8 of the bearing to be operated and disassembled. The recessed stepped stop structure 7 is in pressure abutment with the end face of the one end of the hollow shaft 8 of the bearing to be operated and disassembled. According to the current operation space limitation condition, the through hole 11 of the appropriate height on the screw rod 1 is selected. The limiting rotating shaft 9 is fixed on the screw rod 1 by penetrating the positioning hole 92 through the pin shaft 93 and cooperating with the through hole 11. The R-shaped anti-falling clamp 95 is inserted into the anti-falling hole 94 at the tail of the pin shaft 93. The remaining operation and disassembly process is referred to the embodiment 1.

[0037] The embodiment can change the position of the abutting position between the hollow shaft of the bearing to be disassembled and the limiting rotating shaft relative to the screw rod according to the current limited disassembly operation space, provide a more convenient force applying angle, and adapt to space-limited and high-resistance application scenarios by combining the thread pushing force with the positioning function of the limiting rotating shaft. The operation height of the force receiving rotating drum can be flexibly adjusted according to the space limitation, without the need to disassemble a large number of other machine parts, thereby improving the disassembly efficiency.

[0038] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application. Other modifications or equivalent replacements to the technical solutions of the present application made by those skilled in the art should be covered in the scope of the claims of the present application.

Claims

1. A screw bearing extractor characterized by :Including screw, baffle, nut, block and stress cylinder;The screw one end and block one side fixed connection, the other side of the block fixedly connected with stress cylinder;The stress cylinder inside sleeve joint has force lever;The screw other end sleeve has ring baffle and thread connection has nut;With screw fixed connection the block one side is equipped with bearing storage cavity, the bearing storage cavity opening one end is provided with recessed step stop structure.

2. A screw bearing extractor as defined in claim 1 wherein :The screw sleeve is provided with limiting pivot;The limiting pivot one end is provided with recessed step stop structure, the other end fixedly connected with the sleeve shaft that is gap matched with the screw;The sleeve shaft is provided with positioning hole.

3. A screw bearing extractor as defined in claim 2 wherein :The screw is provided with at least three through holes;The limiting pivot is detachable fixed on the screw through the positioning hole and the through hole matched by the pin shaft.

4. A screw bearing extractor as claimed in claim 1 or 2, wherein :One side of the baffle is provided with annular arc groove.

5. A screw bearing extractor as defined in claim 4 wherein :Another side of the baffle is provided with clamping groove matched with nut and also provided with annular arc groove.

6. A screw bearing extractor as claimed in claim 1 or 2, wherein :The stress cylinder is single cylinder double pass structure.

7. A screw bearing extractor as claimed in claim 1 or 2, wherein :The stress cylinder is vertical cross double cylinder four pass structure.

8. A screw extractor as defined in claim 3, wherein :The tail of the pin shaft is provided with anti-off hole;The anti-off hole is provided with R-shaped anti-off clamp.

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