CN215358224U

CN215358224U - Puller device

Info

Publication number: CN215358224U
Application number: CN202120708758.6U
Authority: CN
Inventors: 刘瑞军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-12-31
Anticipated expiration: 2031-03-29

Abstract

The utility model belongs to the technical field of bearing disassembly, and particularly relates to a puller device for disassembling a bearing, a belt pulley and the like. The method comprises the following steps: base, the outer end of base, connecting hole A, single arm-drag, connecting hole B, hook foot, two clamping pieces, connecting hole C, connecting hole D, screw nut A, screw nut B, the perpendicular ejector pin of screw thread, its characterized in that: the outer end of the base is fixedly connected with an extension head, or the upper part of the outer end of the base is fixedly connected with a screw rod seat, the screw rod seat is provided with an internal thread A, and a threaded transverse ejector rod A is matched with the internal thread A. The distance between the upper part of the pull arm and the outer end head of the base is adjusted by abutting the upper part of the pull arm with the extension head or continuously screwing out the thread transverse ejector rod A, and then the inclination of the pull arm is adjusted until the inclination is parallel to the thread vertical ejector rod, so that the thickness of the drawing target object is gradually increased. Simple and compact structure, low cost and enlarged drawing range.

Description

Puller device

Technical Field

The utility model belongs to the technical field of bearing disassembly, and particularly relates to a puller device for disassembling a bearing, a belt pulley and the like.

Background

The two-jaw and three-jaw puller is a tool frequently used in mechanical maintenance, is mainly used for axially detaching a damaged bearing, a belt pulley and the like (hereinafter, collectively referred to as an object) from a shaft, and can be used as an internal or external puller. In the prior art, the bending degree of the pull arm is limited, so that the larger the diameter of the object which can be hooked is, the smaller the thickness of the object is. In many cases, the pulling force limit of the puller is not exceeded, the pulling arm cannot catch the target object, and at the moment, a larger puller needs to be replaced, so that the maintenance cost is increased. Manual, hydraulic, and pneumatic pullers are all power innovations without addressing this fundamental inability to hook objects.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve the above problems by providing a puller device, comprising: base, base outer end, connecting hole A, single arm-drag, connecting hole B, hook foot, two clamping pieces, connecting hole C, connecting hole D, screw nut A, screw nut B, the perpendicular ejector pin of screw thread, characterized by: the outer end of the base is fixedly connected with an extension head, or the upper part of the outer end of the base is fixedly connected with a screw rod seat, the screw rod seat is provided with an internal thread A, and a threaded transverse ejector rod A is matched with the internal thread A. The extension head is propped against the upper part of the pull arm to enable the pull arm to achieve the inclination of drawing a target object with preset thickness, and the maximum length of the extension head is half of the length required to extend the pull arm and the threaded vertical ejector rod in parallel; or the distance between the upper part of the pull arm and the outer end head of the base is increased by continuously screwing out the threaded transverse ejector rod A, and then the inclination of the pull arm is adjusted until the pull arm is parallel to the threaded vertical ejector rod, so that the thickness of the drawing target object is gradually increased.

The extension head is internally provided with an internal thread B, a threaded transverse ejector rod B is matched with the internal thread B, the end of the threaded transverse ejector rod B is provided with a groove body C, and the groove body C and the threaded transverse ejector rod B are integrally formed, integrally connected or fixedly connected.

The threads of the internal thread A, the internal thread B, the thread cross ejector rod A and the thread cross ejector rod B are multi-head threads.

The end of the threaded transverse ejector rod A is provided with a groove body A, and the groove body A and the threaded transverse ejector rod A are integrally formed, integrally connected or fixedly connected.

The end of the threaded transverse ejector rod A is integrally formed or integrally connected with the ejector rod head, and the ejector rod head is movably connected with the groove body B.

The upper surface or the side surface of the outer end head of the base is provided with scale marks.

The utility model has the beneficial effects that: the thickness of the drawing target object can be increased and the drawing range can be enlarged by extending the head or screwing out the thread cross ejector rod B or continuously screwing out the thread cross ejector rod A. The screwing-out length of each thread transverse ejector rod A is balanced through the scale marks, so that each pull arm does not deviate and exert force averagely.

Drawings

FIG. 1: the structure of the embodiment of the utility model (the threaded cross ejector rod A) is schematic;

FIG. 2: the structure of the embodiment (extension head) of the utility model is shown schematically;

FIG. 3: a schematic diagram of an existing puller drawing target;

FIG. 4: the outer end head, the extension head and the groove body C of the base are matched schematically;

FIG. 5: the utility model discloses a matching drawing of an outer end head of a base, a screw rod seat, a threaded transverse ejector rod A and a groove body A;

FIG. 6: the embodiment of the utility model is a matching drawing of a threaded transverse ejector rod A, an ejector rod head and a groove body B.

In the figure: the device comprises a base 1, a base 101, an outer end head 1011 of the base, an extension head 102, a connecting hole A, a pull arm 2, a connecting hole B201, a hook pin 202, a double clamping piece 3, a connecting hole C301, a connecting hole D302, a screw nut A4, a screw nut B5, a threaded vertical ejector rod 6, a screw seat 7, an internal thread A8, an internal thread B81, a threaded transverse ejector rod A9, a threaded transverse ejector rod B91, an ejector rod head 901, a target object 10, a groove body A11, a groove body B12, a scale mark 13 and a groove body C14.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to fig. 1-6.

In the embodiment of a puller device shown in fig. 1 and 2, the puller device comprises: base 1, base outer end 101, connecting hole A102, single arm-drag 2, connecting hole B201, hook foot 202, double-jaw piece 3, connecting hole C301, connecting hole D302, screw nut A4, screw nut B5, the perpendicular ejector pin of screw thread 6, its characterized in that: the outer end head 101 of the base is fixedly connected with an extension head 1011, or the upper part of the outer end head 101 of the base is fixedly connected with a screw rod seat 7, the screw rod seat 7 is provided with an internal thread A8, and a threaded cross-push rod A9 is matched with the internal thread A8. The two fixed connection modes comprise integral forming, integral connection and fixed connection. The outer end head 101 of the base is provided with a connecting hole A102, the middle section of the pull arm 2 is provided with a connecting hole B201, the lower end head is provided with a hook pin 202, the two end heads of the double-clip piece 3 are respectively provided with a connecting hole C301 and a connecting hole D302, the outer end head 101 of the base and the pull arm 2 are respectively clamped from two sides and are connected together through a screw nut A4 and a screw nut B5, and the pull arm 2 does not rotate obliquely in an inner plane limited by the double-clip piece 3. As shown in fig. 3, in the drawing process of the existing puller, the upper part (the part from the connection hole B201 upwards) of the arm-drag 2 always abuts against the outer end 101 of the base, the larger the diameter of the drawing object 10 is, the larger the opening of each arm-drag 2 is, because the bending degree of the arm-drag 2 is limited, the larger the diameter of the object 10 that the hook leg 202 can hook is, and the smaller the thickness is, the outer edge of the object 10 reaching a certain thickness will push the arm-drag 2 open, so that the hook leg 202 cannot hook the object 10, which is the limit of the drawing range, the pulling limit of the puller is not necessarily reached, only the hook leg 202 cannot hook the object 10 with a larger diameter or a larger thickness, and at this time, a larger puller must be replaced. The upper part of the pull arm 2 is jacked open by the extension head 1011, so that the pull arm 2 achieves the inclination of drawing the target object 10 with the preset thickness; or the distance between the upper part of the pull arm 2 and the outer end head 101 of the base is increased by continuously screwing out the threaded transverse ejector rod A9, and then the inclination of the pull arm 2 is adjusted until the pull arm is parallel to the threaded vertical ejector rod 6, so that the thickness of the drawing target object 10 is gradually increased. The maximum length of the extension head 1011 is half of the extension length required to enable the draw arm 2 to be parallel to the threaded upright post 6. Each threaded cross lift pin a9 points inwardly to the same point of the threaded vertical lift pin 6. The diameter and hardness of the threaded cross-push rod A9 are suitable for the maximum pulling force range of the puller without bending.

As shown in fig. 4, an internal thread B81 is provided in the extension head 1011, a threaded cross support rod B91 is provided to be matched with the internal thread B81, a groove body C14 is provided at the end of the threaded cross support rod B91, the groove body C14 and the threaded cross support rod B91 are integrally formed, integrally connected or fixedly connected, and the inclination of the arm 2 can be adjusted by screwing out the threaded cross support rod B91.

The threads of the internal thread A8, the internal thread B81, the thread cross ejector rod A9 and the thread cross ejector rod B91 are multi-head threads, so that the thread cross ejector rod A9 and the thread cross ejector rod B91 can be screwed out more conveniently than single-head threads, and the efficiency is high.

As shown in fig. 5, the end of the threaded cross-push rod a9 is provided with a groove body a11 which is matched with the upper part of the pull arm 2, the groove body a11 and the threaded cross-push rod a9 are integrally formed, integrally connected or fixedly connected, and at the moment, the groove body a11 can be used for screwing out and screwing in the threaded cross-push rod a 9.

As shown in fig. 6, the end of the threaded cross ejector rod a9 is integrally formed or connected with the ejector head 901, the ejector head 901 is square or hexagonal, so that the threaded cross ejector rod a9 can be screwed out and in manually or by a wrench, the ejector head 901 is movably connected with the groove body B12 and is matched with the upper part of the pull arm 2, and the groove body B12 does not rotate along with the rotation of the ejector head 901. The groove body A11, the groove body B12 and the groove body C14 are all parts which are provided with grooves in the middle and wings at two sides, so that the pull arm 2 is prevented from sliding out laterally.

The upper surface or the side surface of the outer end head 101 of the base is provided with scale marks 13 so that the screwing-out lengths of the threaded transverse ejector rods A9 are equal, and the force of each pull arm 2 is balanced.

The utility model has the beneficial effects that: after the existing puller in the market is replaced with the parts of the puller, each level of puller comprises a part of the puller drawing range of a larger level; the newly redesigned puller only needs fewer product levels in the whole series. Simple and compact structure, low cost and enlarged drawing range. The hydraulic, pneumatic and electric existing puller can also apply the technology of the utility model, so that the pulling range is enlarged, and the effect is better.

The same reference numerals of the same components of the present invention may be referred to each other, and details thereof are well known to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A puller device, comprising: base (1), base outer end (101), connecting hole A (102), single arm-drag (2), connecting hole B (201), hook foot (202), two clamping pieces (3), connecting hole C (301), connecting hole D (302), screw nut A (4), screw nut B (5), screw thread vertical push rod (6), characterized by: the outer end (101) of the base is fixedly connected with an extension head (1011), or the upper part of the outer end (101) of the base is fixedly connected with a screw rod seat (7), the screw rod seat (7) is provided with an internal thread A (8), and a threaded transverse ejector rod A (9) is matched with the internal thread A (8).

2. The apparatus as claimed in claim 1, wherein: an internal thread B (81) is arranged in the extension head (1011), a threaded transverse ejector rod B (91) is matched with the internal thread B (81), a groove body C (14) is arranged at the end head of the threaded transverse ejector rod B (91), and the groove body C (14) and the threaded transverse ejector rod B (91) are integrally formed, integrally connected or fixedly connected.

3. A puller device as set forth in any one of claims 1 or 2, wherein: the threads of the internal thread A (8), the internal thread B (81), the thread cross ejector rod A (9) and the thread cross ejector rod B (91) are multi-start threads.

4. The apparatus as claimed in claim 1, wherein: the end of the threaded transverse ejector rod A (9) is provided with a groove body A (11), and the groove body A (11) and the threaded transverse ejector rod A (9) are integrally formed, integrally connected or fixedly connected.

5. The apparatus as claimed in claim 1, wherein: the end of the threaded transverse ejector rod A (9) is integrally formed or integrally connected with an ejector rod head (901), and the ejector rod head (901) is movably connected with a groove body B (12).

6. The apparatus as claimed in claim 1, wherein: the upper surface or the side surface of the outer end head (101) of the base is provided with scale marks (13).