CN211027808U

CN211027808U - Bulging tool based on parallelogram mechanism

Info

Publication number: CN211027808U
Application number: CN201921887210.1U
Authority: CN
Inventors: 王强; 王艳炜
Original assignee: Chongqing Huayu Heavy Industry Electromechanical Co ltd
Current assignee: Chongqing Huayu Heavy Industry Electromechanical Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-07-17
Anticipated expiration: 2029-11-05

Abstract

The utility model relates to the field of inner diameter detection and repair, and discloses an expanding tool based on a parallelogram mechanism, which comprises a functional part and a driving part for driving the functional part to contract or expand; the functional components comprise a main shaft, a connecting rod and telescopic blocks, the front end and the rear end of the main shaft are hinged with the telescopic blocks through the connecting rod, the main shaft, the connecting rod and the telescopic blocks form a parallelogram mechanism, and at least 2 groups of driving components are uniformly distributed along the circumferential direction of the main shaft; the driving part comprises a fixed handle, an application shaft and a long connecting rod, the fixed handle is hinged with the telescopic block through the long connecting rod, the application shaft and the main shaft are coaxially arranged, one end part of the application shaft is arranged in the main shaft, and the application shaft is in sliding fit in the fixed handle. The utility model discloses to the deformation characteristics of tubulose, its problem of repairing the difficulty of corresponding solution, simultaneously, the biggest inscribed circle that also can audio-visual accurate reflection was porose.

Description

Bulging tool based on parallelogram mechanism

Technical Field

The utility model relates to an internal diameter detects the restoration field, especially relates to an instrument of bulging based on parallelogram mechanism.

Background

At present, an inner circular hole is usually used for assembling shaft parts, the conventional common measuring tools for the inner diameter are mainly an inner diameter micrometer, an inner diameter dial indicator and the like, the measuring tools do not have direct and accurate reflection on the maximum inscribed circle of the hole, but the maximum inscribed circle is important data for directly reflecting whether the hole shaft can be assembled or not. Meanwhile, the pipe wall of the round pipe-shaped object (the inner circle and the wall of the round pipe-shaped object are thin) is easy to dent in the transportation and use processes, but at present, a repairing tool and a bulging tool specially aiming at the round pipe-shaped object are unavailable.

SUMMERY OF THE UTILITY MODEL

Not enough to above-mentioned prior art, the utility model provides an expanding tool based on parallelogram mechanism to the deformation characteristics of tubulose, and the problem of its repair difficulty of corresponding solution, simultaneously, the biggest inscribed circle that also can audio-visually accurate reflection was porose.

In order to solve the technical problem, the utility model discloses a following technical scheme:

An expansion tool based on a parallelogram mechanism comprises a functional part and a driving part for driving the functional part to contract or expand;

The functional components comprise a main shaft, a connecting rod and telescopic blocks, the front end and the rear end of the main shaft are hinged with the telescopic blocks through the connecting rod, the main shaft, the connecting rod and the telescopic blocks form a parallelogram mechanism, and at least 2 groups of driving components are uniformly distributed along the circumferential direction of the main shaft;

The driving part comprises a fixed handle, an application shaft and a long connecting rod, the fixed handle is hinged with the telescopic block through the long connecting rod, the application shaft and the main shaft are coaxially arranged, one end part of the application shaft is arranged in the main shaft, and the application shaft is in sliding fit in the fixed handle.

In the technical scheme, the functional component is kept in a contraction state and goes deep into a concave part in the tube, the fixed handle and the force application shaft are fixed, a fixing mode is selected according to the magnitude of required force, the driving component is held by hands or clamped, the fixed handle is driven to approach the functional component, at the moment, the plurality of telescopic blocks synchronously extend outwards, finally, the size which is consistent with the tube diameter is achieved, and the concave part is ejected; the fixed handle is driven to be far away from the functional part, and at the moment, the plurality of telescopic blocks are synchronously retracted inwards to take out the tool.

Preferably, an annular groove is formed in the force application shaft, a check ring is arranged in the annular groove, and the width of the check ring is larger than the depth of the annular groove.

Therefore, when the fixed handle approaches to the main shaft, the retainer ring can play a role in buffering, and the fixed handle is prevented from colliding with the main shaft to cause abrasion; when the force application shaft is retracted, the retainer ring can ensure that the fixing handle and the force application shaft are retracted together.

As an optimization, the main shaft, the telescopic block and the fixed handle are provided with connecting parts hinged with the connecting rod and the long connecting rod, each connecting part comprises two connecting blocks, the connecting rod or the long connecting rod is arranged between the two connecting blocks, and the connecting rod or the long connecting rod is hinged with the connecting blocks through a bolt.

Therefore, the connecting rod and the long connecting rod are arranged between the two connecting blocks, so that the main shaft, the telescopic block and the fixed handle are more firmly hinged with the connecting rod and the long connecting rod.

Preferably, the inside of the fixed handle is a unthreaded hole, the force application shaft is a screw rod, and the inside of the main shaft is provided with an internal thread matched with the force application shaft.

Therefore, the fixed handle directly slides relative to the force application shaft, so that the plurality of telescopic blocks are driven to synchronously extend or retract outwards, and the force transmission torque of the rigid shaft is suitable for repairing parts such as straight pipes.

Preferably, a metal soft sheath is arranged at the end part of the fixing handle far away from the main shaft, a flexible shaft is arranged at the end part of the force application shaft far away from the main shaft, and the diameter of the flexible shaft is smaller than the inner diameter of the metal soft sheath.

Therefore, the metal soft sheath drives the fixing handle to slide relative to the force application shaft, and the flexible force transmission torque is suitable for repairing thin-wall straight pipe bent pipes.

The utility model has the advantages that:

A bulging instrument based on parallelogram mechanism, to the deformation characteristics of tubulose, the problem of difficulty is restoreed to the corresponding solution of pertinence, resources are saved can be applied to from inside support human blood vessel even, makes the blood circulation, simultaneously, also can audio-visual accurate reflection the biggest inscribed circle of porthole, has guiding meaning to the shaft assembly.

Drawings

Fig. 1 is a front cross-sectional view of an expanding tool based on a parallelogram mechanism according to the present invention;

FIG. 2 is a right side view of FIG. 1;

Fig. 3 is a schematic structural diagram of one embodiment of the bulging tool according to the present invention.

In the attached drawing, 1 is a retainer ring, 2 is a bolt, 3 is a main shaft, 4 is a telescopic block, 5 is a connecting rod, 6 is a long connecting rod, 7 is a fixed handle, 8 is a force application shaft, 9 is a connecting block, 10 is a metal soft sheath, and 11 is a flexible shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower, front, rear, left, right" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1, the bulging tool based on the parallelogram mechanism comprises a functional part and a driving part for driving the functional part to contract or expand;

The functional components comprise a main shaft 3, a connecting rod 5 and a telescopic block 4, the front end and the rear end of the main shaft 3 are respectively hinged with the front end and the rear end of the telescopic block 4 through the connecting rod 5, the main shaft 3, the connecting rod 5 and the telescopic block 4 form a parallelogram mechanism, and at least 2 groups of driving components are uniformly distributed along the circumferential direction of the main shaft 3; in this embodiment, there are 6 sets of drive components.

The driving component comprises a fixed handle 7, an application shaft 8 and a long connecting rod 6, wherein the fixed handle 7 is hinged with the telescopic block 4 through the long connecting rod 6, the application shaft 8 is coaxially arranged with the main shaft 3, one end part of the application shaft 8 is arranged in the main shaft 3, and the application shaft 8 is in sliding fit in the fixed handle 7.

In this embodiment, be provided with the annular on the application of force axle 8, be provided with retaining ring 1 in the annular, the width of retaining ring 1 is greater than the degree of depth of annular.

In this embodiment, the spindle 3, the telescopic block 4 and the fixing handle 7 are provided with a connecting portion hinged to the connecting rod 5 and the long connecting rod 6, the connecting portion includes two connecting blocks 9, the connecting rod 5 or the long connecting rod 6 is arranged between the two connecting blocks 9, and the connecting rod 5 or the long connecting rod 6 is hinged to the connecting blocks 9 through the bolt 2. The telescopic block is provided with three connecting parts, as shown in figure 1, the two connecting parts on the left side are hinged with the main shaft, the connecting part on the right side is hinged with the fixed handle, and the distance from the connecting part in the middle of the telescopic block to the connecting part on the right side is smaller than the distance from the connecting part on the right side of the main shaft to the connecting part on the fixed handle.

In this embodiment, the inside of the fixing handle 7 is a unthreaded hole, the force application shaft 8 is a screw, and the inside of the main shaft 3 is provided with an internal thread matched with the force application shaft 8.

The fixed handle unthreaded hole and the force application shaft are threaded rods, and the main shaft is provided with internal threads: the force transfer torque of the rigid shaft is suitable for repairing straight pipe parts. The advantages are that: low cost, simple operation and easy carrying.

In this embodiment, a metal soft sheath 10 is disposed at an end of the fixing handle 7 away from the main shaft 3, a flexible shaft 11 is disposed at an end of the force applying shaft 8 away from the main shaft 3, and a diameter of the flexible shaft 11 is smaller than an inner diameter of the metal soft sheath 10. The metal flexible sheath can be a metal hose, and the flexible shaft can be a steel cable. The method for arranging the metal soft sheath at the end part of the main shaft can be a welding mode, and the fixing handle can also be sleeved in the metal soft sheath, and then the fixing handle and the metal soft sheath are fixed by using the binding hoop; the force application shaft and the flexible shaft may also be fixed by welding or other means.

The fixed handle unthreaded hole and the force application shaft are screw rods, the main shaft is provided with internal threads, the end of the fixed handle is provided with a long sheath (such as a metal hose), and the end of the force application shaft is provided with a long flexible shaft (such as a steel cable): the flexible torque transmission device is suitable for repairing thin-wall straight pipe bent pipes. The advantages are that: low cost, simple operation and easy carrying.

The main shaft can also be arranged in a thread-free structure, the fixing handle and the force application shaft are arranged in a cylinder or piston structure, and the force application shaft is fixedly connected with the main shaft, wherein the fixed connection can be understood as welding or gluing. The advantages are that: wide application and high transmission power.

The accuracy of the maximum inscribed circle of the measuring hole can be improved by increasing the number of the telescopic blocks.

Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.

Claims

1. An expansion tool based on a parallelogram mechanism is characterized by comprising a functional component and a driving component for driving the functional component to contract or expand;

The functional parts comprise a main shaft (3), a connecting rod (5) and a telescopic block (4), the front end and the rear end of the main shaft (3) are hinged with the front end and the rear end of the telescopic block (4) through the connecting rod (5), the main shaft (3), the connecting rod (5) and the telescopic block (4) form a parallelogram mechanism, and at least 2 groups of driving parts are uniformly distributed along the circumferential direction of the main shaft (3);

The driving component comprises a fixed handle (7), a force application shaft (8) and a long connecting rod (6), the fixed handle (7) is hinged to the telescopic block (4) through the long connecting rod (6), the force application shaft (8) and the main shaft (3) are coaxially arranged, one end of the force application shaft (8) is arranged in the main shaft (3), and the force application shaft (8) is in sliding fit in the fixed handle (7).

2. The expanding tool based on the parallelogram mechanism as claimed in claim 1, wherein the force application shaft (8) is provided with an annular groove, a retainer ring (1) is arranged in the annular groove, and the width of the retainer ring (1) is larger than the depth of the annular groove.

3. The bulging tool based on the parallelogram mechanism as claimed in claim 1, characterized in that the main shaft (3), the telescopic block (4) and the fixing handle (7) are provided with a connecting portion hinged with the connecting rod (5) and the long connecting rod (6), the connecting portion comprises two connecting blocks (9), the connecting rod (5) or the long connecting rod (6) is arranged between the two connecting blocks (9), and the connecting rod (5) or the long connecting rod (6) is hinged with the connecting blocks (9) through a bolt (2).

4. The parallelogram mechanism-based bulging tool of any one of claims 1-3, wherein the inside of the fixing handle (7) is a unthreaded hole, the force application shaft (8) is a screw, and the inside of the main shaft (3) is provided with an internal thread matched with the force application shaft (8).

5. The parallelogram mechanism-based bulging tool of claim 4, wherein the end of the fixing handle (7) far away from the main shaft (3) is provided with a metal soft sheath (10), the end of the force application shaft (8) far away from the main shaft (3) is provided with a flexible shaft (11), and the diameter of the flexible shaft (11) is smaller than the inner diameter of the metal soft sheath (10).