Embedded bushing dismounting device

Abstract

The utility model discloses an embedded bush dismounting device which comprises an ejector rod device, a pull rod device, a pressing plate set, a locking rod and a rubber ring. The cross section of the pressing plate set can be changed, and the lining in the sleeve can be disassembled through the variable-cross-section pressing plate set. When the guide cone faces downwards, the pressing plate set slides inwards under the resilience force of the rubber ring, a cross section smaller than the inner diameter of the sleeve is formed, and the dismounting device can stretch into the sleeve; when the guide cone faces upwards, the pressing plate set slides outwards under the upward acting force of the guide cone, a force bearing face with the diameter larger than the inner diameter of the bush is formed, the lower bush is pressed, and the bush can be taken out after the bush slides downwards along the interior of the sleeve under the downward acting force of the ejector rod device.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical design, and in particular relates to an embedded bushing disassembly device. Background Art

[0002] Some mechanical equipment has similar Figure 1 The structure shown is that bushings are installed both above and below the sleeve. During use, the bushings need to be disassembled and replaced after being worn. During disassembly, the disassembly device pressure plate needs to be extended into the sleeve and press the bushing, and force is applied to remove the bushing from the sleeve. However, in order to extend the disassembly device pressure plate into the sleeve, the size of the disassembly device pressure plate needs to be smaller than the inner diameter of the bushing, and in order to press the bushing, its force area needs to be larger than the inner diameter of the bushing. Therefore, the fixed pressure plate cannot meet the above two requirements at the same time. Summary of the invention

[0003] The utility model aims to solve the above-mentioned bushing disassembly problem and provides an embedded bushing disassembly device with a variable cross-section. The device is ingeniously designed and each component can be flexibly disassembled for easy storage.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An embedded bushing removal device, comprising:

[0006] A push rod device, the push rod device includes a push rod, a passage is provided in the middle of the push rod, the passage opening is located at the lower end surface of the push rod, and a limit slot is provided at the bottom of the passage, the passage includes a fine hole portion located at the upper part and a truncated cone hole portion connected to the lower part of the fine hole portion;

[0007] A pressure plate group, the pressure plate group is arranged around the opening of the truncated cone hole, and a clearance opening is provided in the middle of the pressure plate group for allowing the guide cone to move up and down;

[0008] A pull rod device for moving up and down along the channel, the pull rod device includes a pull rod and a guide cone for driving the pressure plate group to open and close in the horizontal direction, the upper part of the pull rod is provided with a locking rod hole, the guide cone is located at the lower part of the pull rod, and the outer wall of the guide cone is adapted to the truncated cone hole;

[0009] Locking lever for locking the drawbar unit position.

[0010] The pressure plate group includes two pressure plates arranged opposite to each other, and also includes a guide component for guiding the horizontal opening and closing directions of the two pressure plates, and an elastic return member for returning the two pressure plates to the initial positions. The two pressure plates are pressure plate one and pressure plate two. The relative end faces of pressure plate one and pressure plate two have arc-shaped notches, and the two arc-shaped notches form a clearance opening.

[0011] The outer sleeves of the first pressing plate and the second pressing plate are provided with elastic return parts.

[0012] The elastic return member is a rubber ring, and the middle parts of the outer rings of the two pressure plates are semicircular grooves, and the two semicircular grooves form a positioning groove for positioning the rubber ring.

[0013] The guide assembly comprises a guide rod 1 arranged on one side of the channel and a guide rod 2 arranged on the other side of the channel. The upper parts of the two pressing plates are provided with sliding grooves matched with the guide rod 1 and the guide rod 2.

[0014] The lower ends of the guide rod 1 and the guide rod 2 are provided with T-shaped guide heads matched with the slide grooves.

[0015] The limit slot includes a vertical slot and a horizontal slot connected to the upper part of the vertical slot;

[0016] When the pull rod device is in the lower locking position, the guide cone does not exert force on the pressure plate device, the pressure plate device is in a closed state, the cross-section of the pressure plate device in the closed state is smaller than the cross-section of the inner diameter of the sleeve, and the disassembly device is extended into the interior of the sleeve.

[0017] When the pull rod device is in the upper locking position, the locking rod is installed in the locking rod hole on the upper part of the pull rod. The locking rod is pulled upward to make the locking rod move upward along the vertical slot of the limit slot, and drive the pull rod device upward to the upper part of the vertical slot. Then, the locking rod is rotated to make the locking rod turn into the horizontal slot to complete the upper locking. At this time, the guide cone exerts a force on the pressure plate device, and the pressure plate device is in an open state. The cross-section of the pressure plate device in the open state is larger than the bearing surface of the inner diameter of the two bushings. A downward force is applied to the top rod, so that the two pressure plates press the lower bushing and slide downward along the sleeve to remove the bushing.

[0018] The push rod device also includes an upper top plate and a lower top plate. The push rod is a column. The upper top plate, the column and the lower top plate are welded and fixed. A guide rod 1 is installed on the left side of the lower top plate, and a guide rod 2 is installed on the right side of the lower top plate.

[0019] The cross section of the relief opening is smaller than the cross section of the opening of the truncated cone hole.

[0020] There are sliding grooves on the upper parts of the two pressure plates, which can slide inward and outward along the lower surface of the lower top plate of the push rod device. There are yielding openings on the two pressure plates facing the guide cone of the pull rod device. The guide cone is upward to make the two pressure plates slide outward along the lower surface of the lower top plate of the push rod device, forming a load-bearing surface larger than the inner diameter of the bushing and smaller than the inner diameter of the sleeve. There are slots in the middle of the two pressure plates, and there are rubber rings in the slots. The pull rod device is downward to make the two pressure plates slide inward along the lower surface of the lower top plate of the push rod device under the action of the rubber ring, forming a cross section smaller than the inner diameter of the bushing.

[0021] The ejector rod device includes an upper top plate, a column, a first guide rod, a second guide rod, and a lower top plate. The upper top plate, the column, and the lower top plate are fixedly welded; there is a channel inside the column for the up-and-down sliding of the pull rod device; there is an L-shaped card slot at the upper part of the column for the up-and-down locking position of the locking rod; there are two guide rods on the left and right of the lower top plate for the sliding and guiding of the two pressure plates; there is an activity space in the middle of the lower top plate to facilitate the lifting of the guiding cone of the pull rod device.

[0022] The pull rod device includes a pull rod and a guiding cone. The lower part of the pull rod is connected or fixedly welded to the upper part of the guiding cone by threads; the outer shape of the guiding cone is a conical surface that fits the conical holes of the two pressure plates; there is a locking rod hole at the upper part of the pull rod, and the locking rod is locked by passing through the locking rod hole at the upper part of the pull rod from the L-shaped card slot of the column.

[0023] Remove the rubber ring, and the two pressure plates can be slid outwards along the lower surface of the lower top plate for disassembly.

[0024] On the basis of the above technical solution, a support sleeve is provided. One end of the support sleeve has a stop for supporting the sleeve. The inner diameter of the support sleeve is larger than the outer diameter of the bushing, forming a disassembly space for the bushing.

[0025] The bushing installed at both ends inside the sleeve can be quickly and conveniently disassembled and installed with the utility model. The design is ingenious, and each component can be flexibly disassembled, facilitating storage. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of a similar structure of the working object of the utility model;

[0027] Figure 2 It is a schematic diagram of the utility model at the minimum stress surface;

[0028] Figure 3 It is Figure 2 The top view of the two pressure plates in

[0029] Figure 4 It is a schematic diagram of the utility model at the maximum stress surface;

[0030] Figure 5 It is Figure 4 The top view of the two pressure plates in

[0031] Figure 6 It is the left view of the two pressure plates;

[0032] Figure 7 It is a schematic diagram of the structure of the ejector rod device of the utility model;

[0033] Figure 8 It is Figure 7 The left view of

[0034] Figure 9 It is a schematic diagram of the structure of the pull rod device of the utility model;

[0035] Figure 10 Schematic diagram when the utility model extends into the sleeve;

[0036] Figure 11 Working schematic diagram for removing the bushing after the two pressure plates of the utility model separate and press the bushing; Specific embodiments

[0037] The following further describes the specific embodiments of the present utility model in conjunction with the drawings in the specification, so that the technical solutions and their beneficial effects of the present utility model are clearer and more definite. The embodiments are described below with reference to the drawings, aiming to explain the present utility model and should not be construed as a limitation to the present utility model.

[0038] See Figure 1 As shown, a similar structure of the working object of the present utility model is: bushings 1 and 3 are installed at the upper and lower ends of the sleeve 2, and the inner diameters Φa of the two bushings are smaller than the inner diameter Φb of the sleeve 2.

[0039] See Figures 2 - 9 As shown, an embedded bushing removal device includes a jacking rod device 4, a pull rod device 6, a pressure plate device 7), a locking rod 5 and a rubber ring 8.

[0040] The pressure plate device 7 includes a first pressure plate 9 and a second pressure plate 10. There are sliding grooves on the upper parts of the two pressure plates, and they can slide inwards and outwards along the lower surface of the lower top plate 14 of the jacking rod device 4. There are relief openings on the opposite sides of the two pressure plates facing the guiding cone 17 of the pull rod device 6. When the guiding cone 17 moves upwards, the two pressure plates slide outwards along the lower surface of the lower top plate 14 of the jacking rod device 4 respectively, forming a bearing surface larger than the inner diameter of the bushing and smaller than the inner diameter of the sleeve. There are clamping grooves in the middle of the outer circles of the two pressure plates, and rubber rings 8 are arranged in the clamping grooves. When the pull rod device 6 moves downwards, the two pressure plates slide inwards along the lower surface of the lower top plate 14 of the jacking rod device 4 under the action of the rubber rings 8, forming a cross-section smaller than the inner diameter of the bushing.

[0041] The ejector rod device 4 includes an upper top plate 11, a column 12, a lower top plate 14, a first guide rod 13 and a second guide rod 15. Among them, the upper top plate 11, the column 12 and the lower top plate 14 are fixed by welding. There is a channel inside the column 12 for the up-and-down sliding of the pull rod device 6; there is an L-shaped card slot at the upper part of the column 12 for the up-and-down locking positions of the locking rod 5; there are two guide rods on the left and right of the lower top plate 14 for the sliding and guiding of the two pressing plates; there is an activity space in the middle of the lower top plate 14 for the lifting of the guiding cone 17 of the pull rod device 6. The two guide rods are the first guide rod 13 and the second guide rod 15; both the upper parts of the first pressing plate 9 and the second pressing plate 10 have sliding grooves that cooperate with the bosses of the two guide rods. After passing through the lower bosses of the two guide rods respectively, they can slide inwards and outwards along the lower surface of the lower top plate 14. After installing the rubber ring 8, the cross-section formed by the inward sliding under the action of the resilience force, the longest dimension of which is L1, and L1 is less than the inner diameter Φa of the two bushings, so that the present utility model can be inserted into the two bushings from the inside. Remove the rubber ring, and the two pressing plates can slide outwards along the lower surface of the lower top plate 14 and then be disassembled.

[0042] The ejector rod device 4 includes an upper top plate 11, a column 12, a first guide rod 13, a second guide rod 15 and a lower top plate 14, and the upper top plate 11, the column 12 and the lower top plate 14 are fixed by welding.

[0043] The pull rod device 6 includes a pull rod 16 and a guiding cone 17. The lower part of the pull rod 16 is threadedly connected to the upper part of the guiding cone 17. The outer shape of the guiding cone 17 is a conical surface that cooperates with the conical holes of the two pressing plates. There is a locking rod hole at the upper part of the pull rod 16. The locking rod 5 is locked by passing through the locking rod hole at the upper part of the pull rod 16 from the L-shaped card slot (i.e., the limit card slot) of the column 12. The locking rod 5 is as follows Figure 2 、 Figure 4 shown, the outer shape is an L-shaped pin; the outer diameter of the locking rod 5 < the inner diameter of the locking rod hole < the width of the L-shaped card slot. First, insert the ejector rod device 4 into the column 12, and move it upwards so that the locking rod hole reaches the lower part of the L-shaped card slot. During the process, the ejector rod device 4 can be rotated to align the locking rod hole with the vertical card slot at the lower part of the L-shaped card slot, and then the locking rod 5 is successively passed through the front L-shaped card slot, the locking rod hole, and the rear L-shaped card slot. The inner diameters of the two pressing plates face the guiding cone 17 and have conical holes. The outer shape of the guiding cone 17 is a conical surface that cooperates with the conical holes of the two pressing plates. When the guiding cone 17 moves upwards, the two pressing plates slide outwards along the lower surface of the lower top plate 14 respectively, and the formed bearing surface, the longest dimension of which is L2, and L2 is greater than the inner diameter Φa of the two bushings and less than the inner diameter Φb of the sleeve 2, so that the present utility model can press the two bushings to form a bearing surface.

[0044] See Figure 10 shown. When the locking rod 5 is at the vertical card slot of the limit card slot, it reaches the lower locking position under the action of the self-weight of the ejector rod device 4, and the pull rod device 6 is at the lower locking position. At this time, the guiding cone 17 does not exert a force on the two pressing plates, and the two pressing plates slide inwards under the elastic force of the rubber ring 8 to form a cross-section smaller than the inner diameter of the sleeve 2, and the disassembly device is inserted into the sleeve 2.

[0045] See Figure 11 As shown, pull the drawbar device 6 to the upper locking position and lock it: Pull up the locking lever 5, so that the locking lever 5 moves upward along the vertical slot of the L-shaped slot, and drives the drawbar device 6 upward. After reaching the upper part of the L-shaped slot, rotate the locking lever 5 so that the locking lever 5 turns into the horizontal slots of the front and rear L-shaped slots to complete the upper locking. At this time, the guiding cone 17 exerts a force on the two pressing plates, so that the two pressing plates slide outward along the lower surface of the lower top plate 14 respectively, forming a bearing surface with a diameter larger than the inner diameters of the two bushings.

[0046] During disassembly, one end of the support sleeve 18 has a stop for supporting the sleeve 2. The inner diameter of the support sleeve 18 is larger than the outer diameters of the bushings 1 and 3, forming a disassembly space for the bushings 1 and 3. Apply a downward force to the upper top plate 11, so that the two pressing plates press the lower bushing 3 and slide downward along the sleeve 2, and then take out the bushing 3.

[0047] The above embodiments are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made according to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. An embedded bushing removal device, characterized in that: include: A push rod device (4), the push rod device (4) comprising a push rod, a passage in the middle of the push rod, an opening of the passage located at the lower end surface of the push rod, a limit slot at the bottom of the passage, the passage comprising a fine hole portion located at the upper part, and a truncated cone hole portion connected to the lower part of the fine hole portion; A pressure plate group, the pressure plate group is arranged around the opening of the truncated cone hole, and a clearance opening is formed in the middle of the pressure plate group for allowing the guide cone (17) to move up and down; A pull rod device (6) for moving up and down along the channel, the pull rod device (6) comprising a pull rod (16) and a guide cone (17) for driving the pressure plate group to open and close in the horizontal direction, the upper part of the pull rod (16) having a locking rod hole, the guide cone (17) being located at the lower part of the pull rod (16), and the outer wall of the guide cone (17) being adapted to the truncated cone hole; A locking lever (5) for locking the position of the drawbar assembly (6).

2. The embedded bushing removal device according to claim 1, characterized in that: The pressure plate group includes two pressure plates arranged opposite to each other, and also includes a guide component for guiding the two pressure plates in a horizontal opening and closing direction, and an elastic return member for returning the two pressure plates to an initial position. The two pressure plates are pressure plate one (9) and pressure plate two (10). The pressure plate one (9) and pressure plate two (10) have arc-shaped notches on their opposite end surfaces, and the two arc-shaped notches form a clearance opening.

3. The embedded bushing removal device according to claim 2, characterized in that: The outer covers of the pressing plate 1 (9) and the pressing plate 2 (10) are provided with elastic return parts.

4. The embedded bushing removal device according to claim 2, characterized in that: The elastic return member is a rubber ring (8), and the middle parts of the outer rings of the two pressure plates are semicircular grooves, and the two semicircular grooves form a positioning groove for positioning the rubber ring (8).

5. The embedded bushing removal device according to claim 2, characterized in that: The guide assembly comprises a guide rod 1 (13) disposed on one side of the channel and a guide rod 2 (15) disposed on the other side of the channel, and the upper parts of the two pressure plates are provided with a slide groove cooperating with the guide rod 1 (13) and the guide rod 2 (15).

6. The embedded bushing removal device according to claim 5, characterized in that: The lower ends of the guide rod 1 (13) and the guide rod 2 (15) are provided with T-shaped guide heads adapted to the slide grooves.

7. The embedded bushing removal device according to claim 1, characterized in that: The limit slot includes a vertical slot and a horizontal slot connected to the upper part of the vertical slot; When the pull rod device (6) is in the lower locking position, the guide cone (17) does not exert force on the pressure plate device (7), and the pressure plate device (7) is in a closed state. The cross-section of the pressure plate device (7) in the closed state is smaller than the cross-section of the inner diameter of the sleeve (2), and the disassembly device is extended into the sleeve (2); when the pull rod device (6) is in the upper locking position, the locking rod (5) is installed in the upper part of the pull rod (16) and has a locking rod hole. The locking rod (5) is pulled upward, so that the locking rod (5) is moved upward along the vertical slot of the limit slot. Move and drive the pull rod device (6) upward to the upper part of the vertical slot, then rotate the locking rod (5) so that the locking rod (5) is rotated into the horizontal slot to complete the upper locking. At this time, the guide cone (17) exerts a force on the pressure plate device (7), and the pressure plate device (7) is in an open state. The cross-section of the pressure plate device (7) in the open state is larger than the load-bearing surface of the inner diameter of the two bushings; a downward force is applied to the push rod, so that the two pressure plates press the lower bushing (3) and slide downward along the sleeve (2) to remove the bushing (3).

8. The embedded bushing removal device according to claim 5, characterized in that: The push rod device (4) further comprises an upper push plate (11) and a lower push plate (14); the push rod is a column (12); the upper push plate (11), the column (12) and the lower push plate (14) are welded and fixed; a guide rod 1 (13) is installed on the left side of the lower push plate (14); and a guide rod 2 (15) is installed on the right side of the lower push plate (14).

9. The embedded bushing removal device according to claim 2, characterized in that: The cross section of the relief opening is smaller than the cross section of the opening of the truncated cone hole.

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