CN212471314U - Pin shaft pulling-out device - Google Patents

Abstract

The utility model discloses a pin shaft extracting device, which comprises a supporting frame which is used for being abutted against a supporting surface at the periphery of a pin shaft hole, a screw rod which is arranged in the supporting frame in a penetrating way and can axially move back and forth, and a connecting plate which corresponds to the end surface of a pin shaft and is used for being connected with the pin shaft; the axial direction of the screw rod is parallel to the axial direction of the pin shaft, the first end of the screw rod is positioned in the support frame and close to the pin shaft, and the opposite second end penetrates out of the support frame; the connecting plate is disposed on a first end of the screw. The utility model discloses a device is extracted to round pin axle is applicable to the operation of extracting of round pin axle on various equipment (like large-scale deep water underwater equipment etc.), simple structure, convenient operation, and can reduce the damage of dismouting in-process to the round pin axle, the life of extension round pin axle.

Description

Pin shaft pulling-out device

Technical Field

The utility model relates to an ocean engineering equipment technical field especially relates to a round pin axle extraction device.

Background

The pin shaft is a turning part for supporting and hinge-connecting the roller, and the damaged pin shaft not only can influence the normal operation of the equipment, but also can even cause damage to the equipment. The pin shaft can be worn after being used for a long time, and in the aspect of daily equipment maintenance, the pin shaft is frequently required to be disassembled and assembled so as to implement the work of inspection, maintenance, replacement and the like, in particular to the pin shaft of large-scale deepwater underwater equipment.

Therefore, a pin shaft extracting tool specially used in the maintenance process of large equipment is needed to be designed, damage to the pin shaft in the dismounting process is reduced, and the service life of the pin shaft is prolonged.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a device is extracted to round pin axle to foretell prior art defect.

The utility model provides a technical scheme that its technical problem adopted is: the pin shaft pulling-out device comprises a supporting frame, a screw rod and a connecting plate, wherein the supporting frame is used for abutting against a supporting surface on the periphery of a pin shaft hole;

the axial direction of the screw rod is parallel to the axial direction of the pin shaft, the first end of the screw rod is positioned in the support frame and close to the pin shaft, and the opposite second end penetrates out of the support frame; the connecting plate is disposed on a first end of the screw.

Preferably, the support frame comprises a support ring, a support plate spaced opposite the support ring, at least one support rod connected between the support ring and the support plate;

the supporting plate is provided with a through hole, the first end of the screw rod penetrates through the through hole and is located between the supporting ring and the supporting plate, and the second end of the screw rod is located on the supporting plate.

Preferably, the through hole is located at a central position of the support plate.

Preferably, the support ring and the support plate are both circular in shape.

Preferably, a guide cylinder is arranged on the surface of the supporting plate, which faces away from the supporting ring, and the guide cylinder is matched on the through hole and communicated with the through hole.

Preferably, the connecting plate is provided with at least one through hole, and the connecting plate is connected with the pin shaft by penetrating a bolt into the through hole and locking the bolt in a screw hole on the end face of the pin shaft.

Preferably, the connecting plate is provided with two through holes which are positioned on a straight line; the first end part of the screw rod is connected to the middle position of the connecting plate, and the two through holes are located on two opposite sides of the screw rod.

Preferably, the perforations are waist-shaped holes.

Preferably, the connecting plate is a circular plate, a waist-shaped plate or a polygonal plate.

Preferably, the pin shaft pulling-out device further comprises a hand crank, and a screw cap matched with the screw is arranged at the end part of the hand crank; the hand crank is connected to the second end of the screw rod through the screw cap;

the crank is rotated to drive the screw cap to rotate relative to the screw rod, and the screw rod is driven to move axially.

The utility model discloses a device is extracted to round pin axle is applicable to the operation of extracting of round pin axle on various equipment (like large-scale deep water underwater equipment etc.), simple structure, convenient operation, and can reduce the damage of dismouting in-process to the round pin axle, the life of extension round pin axle.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic perspective view of a pin shaft extracting device according to an embodiment of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the pin shaft extracting apparatus according to an embodiment of the present invention includes a supporting frame 10, a screw 20, and a connecting plate 30. The support frame 10 is adapted to abut against a support surface on the outer periphery of the pin shaft hole, and serves as a main body support frame structure of the apparatus. The screw 20 is inserted into the support frame 10 and can move back and forth axially, and the connecting plate 30 is corresponding to the end face of the pin shaft and is used for connecting with the pin shaft.

The axial direction of the screw 20 is parallel to the axial direction of the pin, the first end 21 of the screw 20 is located in the support frame 10 and close to the pin, and the opposite second end 22 penetrates out of the support frame 10. A connecting plate 30 is provided on a first end of the screw 20. After the connecting plate 30 is connected to the pin shaft, the pin shaft is pulled out of the pin shaft hole by driving the screw 20 to move axially.

In particular, the support frame 10 may include a support ring 11, a support plate 12 spaced opposite the support ring 11, and at least one support bar 13 connected between the support ring 11 and the support plate 12. A space is formed between the support ring 11 and the support plate 12 for accommodating the screw 20 and the connection plate 30 therein.

The support plate 12 is provided with a through hole (not shown), through which a first end 21 of the threaded rod 20 passes between the support ring 11 and the support plate 12, and a second end 22 of the threaded rod 20 is located above the support plate 12 (also above the surface of the support plate 12 facing away from the support ring 11). The threaded rod 20 is positioned in the support frame 10 through the through hole and is movable axially back and forth relative to the support frame 10 in its own axis.

The inner diameter of the support ring 11 is larger than the diameter of the pin shaft and the pin shaft hole, so that the support frame 10 can abut against the support surface on the periphery of the pin shaft hole through the support ring 11, and the pin shaft is located in the inner ring range of the support ring 11. The supporting plate 12 is far away from the pin shaft and is connected with the supporting ring 11 into a whole through a supporting rod 13. The length of the support bar 13 may be set according to the length of the pin shaft so that the screw 20 is moved to pull out the pin shaft by a sufficient length to remove the pin shaft from the pin shaft hole.

The support bars 13 are preferably provided in at least two, such as three support bars 13 as shown in fig. 1, to ensure stable connection between the support ring 11 and the support plate 12 and structural strength of the entire support frame 10.

The shapes of the support ring 11 and the support plate 12 may be according to practical arrangements, such as circular, polygonal, etc. In this embodiment, the support ring 11 and the support plate 12 are both circular in shape. The through hole is located at the center of the support plate 12.

The surface of the supporting plate 12 facing away from the supporting ring 11 is provided with a guide cylinder 14, and the guide cylinder 14 is matched on the through hole and communicated with the through hole. The second end 22 of the threaded spindle 20 projects through the through-opening and the guide sleeve 14 out of the surface of the support plate 12 facing away from the support ring 11. The guide cylinder 14 is arranged to guide the axial movement of the screw 20.

The connection plate 30 is connected to the end of the first end 21 of the screw 20, perpendicular to the screw 20. Wherein, the connecting plate 30 is provided with at least one through hole 31, and the connecting plate 30 is connected with the pin shaft by a bolt which is inserted into the through hole 31 and locked in a screw hole on the end surface of the pin shaft. When the screw 20 moves axially, the connecting plate 30 is driven to move, and the pin shaft is driven to move axially, so that the pin shaft is pulled out of the pin shaft hole.

The connecting plate 30 may be, but is not limited to, a circular plate, a waist-shaped plate, or a polygonal plate.

Preferably, the connection plate 30 is provided with two perforations 31 in a straight line. The first end 21 of the screw 20 is connected to the middle of the connecting plate 30, and two through holes 31 are formed on opposite sides of the screw 20. The arrangement of the two through holes 31 ensures the balance and stability of the connection between the connecting plate 30 and the pin shaft, so that the pin shaft can be pulled out of the pin shaft hole more stably and reliably.

The through hole 31 is further preferably a waist-shaped hole, so that a certain length is provided, which is beneficial for the penetration adjustment of the bolt, and the bolt can penetrate into the corresponding position of the waist-shaped hole according to the position of the screw hole on the end surface of the pin shaft and can be locked in the screw hole.

Further, the utility model discloses a round pin axle extraction element still includes crank handle 40, and crank handle 40's tip is equipped with the nut 41 with screw rod 20 looks adaptation. The hand lever 40 is attached to the second end 22 of the screw 20 by a nut 41. The rotation of the crank 40 rotates the nut 41 relative to the screw 20, and the nut 41 abuts against the guide cylinder 14 to drive the screw 20 to move axially.

The utility model discloses a round pin axle extraction device is used for when the round pin axle of large-scale deep water underwater equipment (like plough ditching machine) is extracted, with its butt on the holding surface of round pin axle hole periphery at round pin axle place. The connecting plate 30 is fitted on the end face of the pin shaft and the connecting plate 30 is connected with the end face of the pin shaft by bolts. When the hand crank 40 is rotated, the nut 41 of the hand crank 40 rotates on the screw rod 20, so that the screw rod 20 is driven to move in the direction away from the pin shaft, and the movement of the screw rod 20 also drives the pin shaft to move through the connecting plate 30, so that the pin shaft is pulled out of the pin shaft hole. After completion, the connecting plate 30 can be detached from the pin.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A pin shaft pulling-out device is characterized by comprising a supporting frame, a screw rod and a connecting plate, wherein the supporting frame is used for abutting against a supporting surface on the periphery of a pin shaft hole;

the axial direction of the screw rod is parallel to the axial direction of the pin shaft, the first end of the screw rod is positioned in the support frame and close to the pin shaft, and the opposite second end penetrates out of the support frame; the connecting plate is disposed on a first end of the screw.

2. The pin extraction apparatus of claim 1, wherein the support frame includes a support ring, a support plate spaced apart from and opposite the support ring, at least one support bar connected between the support ring and the support plate;

the supporting plate is provided with a through hole, the first end of the screw rod penetrates through the through hole and is located between the supporting ring and the supporting plate, and the second end of the screw rod is located on the supporting plate.

3. The pin shaft drawing device according to claim 2, wherein the through hole is located at a center position of the support plate.

4. The pin extraction apparatus of claim 2, wherein the support ring and the support plate are both circular in shape.

5. The apparatus for extracting a hinge pin according to claim 2, wherein a guide is provided on a surface of the support plate facing away from the support ring, the guide being fitted over and communicating with the through hole.

6. The apparatus according to claim 1, wherein the connecting plate is provided with at least one through hole, and the connecting plate is connected to the pin by a bolt inserted through the through hole and locked in a screw hole formed in an end surface of the pin.

7. The pin shaft extracting apparatus according to claim 6, wherein the connecting plate is provided with two through holes in a straight line; the first end part of the screw rod is connected to the middle position of the connecting plate, and the two through holes are located on two opposite sides of the screw rod.

8. The pin extraction apparatus of claim 6, wherein the aperture is a slotted hole.

9. The pin shaft drawing device according to claim 1, wherein the connecting plate is a circular plate, a waist-shaped plate, or a polygonal plate.

10. The pin shaft pulling device according to any one of claims 1 to 9, further comprising a hand crank, wherein a nut adapted to the screw is arranged at an end of the hand crank; the hand crank is connected to the second end of the screw rod through the screw cap;

the crank is rotated to drive the screw cap to rotate relative to the screw rod, and the screw rod is driven to move axially.

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