Bushing pulling device

Abstract

The utility model discloses a bush pulling device, relates to the technical field of bush pulling, and solves the problems that various types of bushings comprise inner bushings and outer bushings, various auxiliary tools are possibly needed in a traditional pulling method, and the pulling requirements of different types of bushings cannot be met. A bush pulling device comprises a fixing ring and a pulling rod. The fixing ring is of an annular structure, an annular groove structure is formed in the front side of the fixing ring, and four sets of penetrating type rectangular sliding groove structures are formed in the outer side of the fixing ring in an annular array shape. An inner plate of a cross-shaped plate structure is fixedly arranged on the inner side of the fixing ring. A first screw rod is rotationally arranged in the screw hole in the inner side of the inner plate in a threaded fit manner; the rectangular grooves in the two sides of the rear end of the first screw are each internally provided with a set of extension plates of a rectangular block structure in a rotating mode. Through the cooperation of the two pulling modes, bushings of various different installation conditions and structures can be coped with, more use scene requirements are met, and better functionality and practicability are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bushing extraction technical field, more specifically, it is particularly related to a bushing extraction device. BACKGROUND

[0002] In many fields such as mechanical manufacturing and equipment maintenance, bushings, as a kind of commonly used mechanical parts, are widely used in various mechanical equipment, and play an important role in supporting, guiding and reducing wear. However, during the maintenance, repair or replacement of the equipment, the bushing often needs to be extracted from its installation position.

[0003] The current bushing extraction device still has the following disadvantages:

[0004] 1. There are many types of bushings, including inner and outer bushings. The traditional extraction method may need to use multiple auxiliary tools, and a lot of time is needed for adjustment and positioning during operation, which not only prolongs the repair time, but also cannot meet the extraction needs of different types of bushings, and may cause damage to the equipment and the bushing itself due to improper operation.

[0005] 2. Most tools have poor versatility and can only be used for bushings of specific size or type. For example, some extraction tools designed for bushings of a certain inner diameter cannot be used when facing bushings of different inner diameters, which requires enterprises to equip multiple extraction tools of different specifications, increasing the cost and management difficulty. INVENTION CONTENTS

[0006] In order to solve the above technical problems, the utility model provides a bushing extraction device to solve the problem of the variety of bushings, including inner and outer bushings, and the traditional extraction method may need to use multiple auxiliary tools, and a lot of time is needed for adjustment and positioning during operation, which not only prolongs the repair time, but also cannot meet the extraction needs of different types of bushings.

[0007] The purpose and function of the bushing extraction device are achieved by the following specific technical means:

[0008] A bushing extraction device, comprising: a fixed ring; the fixed ring adopts a circular ring structure, and a circular ring groove structure is formed on the front side of the fixed ring, and four groups of through-type rectangular sliding groove structures are arranged in an annular array on the outer side of the fixed ring; a cross-shaped plate structure inner plate is fixedly arranged on the inner side of the fixed ring, and a through-type screw hole structure is formed in the middle of the inner plate; a first screw rod is rotatably arranged in the screw hole on the inner side of the inner plate through thread cooperation, and a group of rectangular groove structures are formed on both sides of the rear end of the first screw rod; a group of rectangular block structure extension plates are rotatably arranged in the rectangular grooves on both sides of the rear end of the first screw rod, and a screw hole structure is formed on one side of the extension plate.

[0009] Further, a second screw rod is arranged in the screw hole on one side of the extension plate through thread cooperation.

[0010] Further, a control ring with a circular ring structure is arranged in the circular ring groove on the front side of the fixing ring, and a threaded groove structure is arranged on the rear side of the control ring.

[0011] Further, four groups of sliding blocks with U-shaped block structures are arranged in the rectangular sliding grooves on the outer side of the fixing ring in a rectangular array, a threaded groove structure is arranged on one side of the sliding block for meshing connection with the control ring, a through circular through groove structure is arranged on the front side of the sliding block, and a through screw hole structure is arranged on the front side of the sliding block.

[0012] Further, a sliding rod with a cylindrical structure is arranged in the circular through groove on the front side of the sliding block; a connecting plate with a wedge-shaped plate structure is fixedly arranged on the outer side end of the sliding rod; a third screw rod is rotatably arranged on the front side of the connecting plate, and the third screw rod is connected with the screw hole on the sliding block through thread cooperation.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The device has two pulling modes, which can pull the bushing from the inside or the outside. Through the cooperation of the two pulling modes, various bushings with different installation conditions and structures can be dealt with, more use scene requirements can be met, and better functionality and practicality are achieved.

[0015] The bushing pulling device has excellent universality and can adapt to the bushing pulling requirements of bushings with different inner diameters and outer diameters and different lengths. By arranging the adjustable extension plate and the second screw rod, the inner diameter of the bushing can be flexibly adjusted, so that the outer side end of the extension plate or the second screw rod is in close contact with the inner side bottom of the bushing, and the bushing with different inner diameters is pulled from the inside. At the same time, the four groups of sliding blocks are synchronously radially slid in the rectangular sliding grooves on the outer side of the fixing ring by rotating the control ring, and the sliding blocks are adjusted to appropriate positions according to the outer diameter of the bushing; then the connecting plate and the sliding rod are driven to slide along the sliding block by rotating the third screw rod, and the position of the connecting plate is adjusted according to the length of the bushing, so that the bushing with different diameters and lengths is pulled from the outside. This design greatly reduces the cost and management difficulty of enterprises for equipping various tools to cope with different bushings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall rear side axial view structural schematic diagram of the utility model.

[0017] Figure 2 is the overall front side axial view structural schematic diagram of the utility model.

[0018] Figure 3It is the integral split shaft view structural schematic diagram of the utility model.

[0019] Figure 4 It is the sliding block partial split structure schematic diagram of the utility model.

[0020] Figure 5 It is the first screw partial split structure schematic diagram of the utility model.

[0021] In the drawing, the corresponding relationship of component name and drawing number is as follows:

[0022] 1, fixed ring;101, inner plate;102, first screw;103, extension plate;104, second screw;105, control ring;106, sliding block;107, slide rod;108, connecting plate;109, third screw. Specific implementation

[0023] The embodiment of the utility model is further described in detail in combination with the drawings and examples.

[0024] Example 1:

[0025] As shown in the accompanying drawings Figure 1 to the accompanying drawings Figure 5 As shown:

[0026] The utility model provides a bushing extraction device, include: fixed ring 1;Fixed ring 1 adopts circular ring structure, and the front side of fixed ring 1 is provided with circular annular groove structure, and the outside of fixed ring 1 is provided with four groups of through type rectangular sliding slot structure in annular array shape;The inner side of fixed ring 1 is fixedly provided with the inner plate 101 of cross-shaped plate structure, and the middle of inner plate 101 is provided with through type screw hole structure;The screw hole in the inner side of inner plate 101 is provided with first screw 102 by screw thread cooperation rotation, and the rear end both sides of first screw 102 are provided with a group of rectangular groove structure;The rectangular groove in the rear end both sides of first screw 102 is provided with a group of rectangular block structure extension plate 103 rotation, and the side of extension plate 103 is provided with screw hole structure.

[0027] Among them, the screw hole in the side of extension plate 103 is provided with second screw 104 by screw thread cooperation rotation.

[0028] The specific use mode and function of the embodiment:

[0029] When the bushing needs to be pulled out from the inner side, the connecting plate 108 is adjusted to the top of the bushing outside, and then the first screw rod 102 is inserted into the inner bottom of the bushing, and then the two groups of extension plates 103 are rotated and unfolded outward, and the length of the second screw rod 104 is adjusted according to the inner diameter of the bushing, and the outer end of the extension plate 103 or the second screw rod 104 is in contact with the inner bottom of the bushing by rotating the second screw rod 104 along the screw hole outside the extension plate 103, and then the first screw rod 102 is rotated to move upward along the inner plate 101, and the inner part of the bushing is pulled out through the clamping connection of the extension plate 103 or the second screw rod 104, and the internal bushing and the external bushing can be pulled out through the cooperation of the two pulling modes, which is more practical and has better functionality.

[0030] Embodiment 2:

[0031] Based on embodiment 1, as shown in the accompanying drawings: Figure 1 to the accompanying drawings: Figure 5 as shown:

[0032] Among them, the control ring 105 of the circular ring structure is rotatably arranged in the circular ring groove on the front side of the fixed ring 1, and the rear side of the control ring 105 is provided with a threaded groove structure.

[0033] Among them, the rectangular sliding groove on the outer side of the fixed ring 1 is slidably provided with four groups of sliding blocks 106 of U-shaped block structure in a rectangular array, and the sliding block 106 is provided with a threaded groove structure on one side which is engaged and connected with the control ring 105, the front side of the sliding block 106 is provided with a through-type circular through groove structure, and the front side of the sliding block 106 is provided with a through-type screw hole structure.

[0034] Among them, the sliding block 106 of the circular through groove on the front side is slidably provided with a sliding rod 107 of a cylindrical structure; the outer end of the sliding rod 107 is fixedly provided with a connecting plate 108 of a wedge-shaped plate structure; the front side of the connecting plate 108 is rotatably provided with a third screw rod 109, and the third screw rod 109 is connected with the screw hole on the sliding block 106 through threaded cooperation.

[0035] The specific use and effect of the embodiment:

[0036] The utility model discloses, need to the bushing from the outside is pulled out, the rear end of first screw rod 102 is supported in the middle position of bushing, then according to the diameter adjustment of each group sliding block 106 of bushing of position, rotate control ring 105, because the thread groove structure of control ring 105 rear side is engaged with the thread groove structure of one side of sliding block 106 and connects, the rotation of control ring 105 will drive four groups sliding block 106 in the radial synchronous sliding of fixed ring 1 outside rectangular slide groove, according to the outside diameter of bushing, adjust sliding block 106 to the suitable position, make connecting plate 108 can be close to the outside edge of bushing, then according to the length adjustment of each group connecting plate 108 of bushing, through rotating third screw rod 109 drive connecting plate 108 and slide rod 107 along sliding block 106 and slide, make each group connecting plate 108 move to the bottom of bushing, then the inside end of each group connecting plate 108 and the outside edge of bushing contact, then can rotate first screw rod 102, through the pulling force that the first screw rod 102 in the rotating process and inner plate 101 connection produces on the bushing inside accessory, pull fixed ring 1 and connecting plate 108 and bushing and slide upwards, reach the purpose of bushing from the outside is pulled out, can be applicable to different diameter and different length's bushing, satisfy different use needs.

Claims

1. A bushing removal device, characterized in that, include: Fixed ring (1); The fixed ring (1) adopts a circular ring structure, and a circular ring groove structure is provided on the front side of the fixed ring (1), and four sets of through rectangular sliding groove structures are provided on the outer side of the fixed ring (1) in a circular array; an inner plate (101) with a cross-shaped plate structure is fixedly provided on the inner side of the fixed ring (1), and a through screw hole structure is provided in the middle of the inner plate (101); a first screw (102) is rotatably provided in the screw hole on the inner side of the inner plate (101) through threaded engagement, and a set of rectangular groove structures are provided on both sides of the rear end of the first screw (102); a set of rectangular block structure extension plates (103) are rotatably provided in the rectangular grooves on both sides of the rear end of the first screw (102), and a screw hole structure is provided on one side of the extension plate (103).

2. The bushing removal device as described in claim 1, characterized in that: A second screw (104) is rotatably installed in the screw hole on one side of the extension plate (103) through threaded engagement.

3. The bushing removal device as described in claim 1, characterized in that: A circular ring control ring (105) is rotatably disposed in the annular groove on the front side of the fixed ring (1), and a threaded groove structure is disposed on the rear side of the control ring (105).

4. The bushing removal device as described in claim 1, characterized in that: The rectangular groove outside the fixed ring (1) is arranged in a rectangular array with four sets of U-shaped block structures sliding blocks (106). One side of the sliding block (106) is provided with a threaded groove structure that meshes with the control ring (105). The front side of the sliding block (106) is provided with a through circular groove structure and a through screw hole structure.

5. The bushing removal device as described in claim 4, characterized in that: A cylindrical slide rod (107) is slidably disposed in the circular through groove on the front side of the sliding block (106).

6. The bushing removal device as described in claim 5, characterized in that: The outer end of the slide bar (107) is fixedly provided with a connecting plate (108) of wedge plate structure.

7. The bushing removal device as described in claim 6, characterized in that: The front side of the connecting plate (108) is rotatably provided with a third screw (109), and the third screw (109) is connected to the screw hole on the sliding block (106) by a threaded engagement.

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