Turnover tool for mounting flat hole round pin connecting structure

Abstract

The utility model discloses an overturning tool for installing a flat hole round pin connecting structure, a flat split pin is inserted into a flat hole of a flat hole round pin, and the overturning tool is characterized by comprising a crank flat opening sleeve, a supporting leg opening long block installed at the top end of a vertical round rod of the crank flat opening sleeve and a supporting leg opening short block installed on the lower portion of the supporting leg opening long block. The side, close to the long supporting leg opening block, of the short supporting leg opening block is provided with a limiting notch for the long supporting leg of the flat cotter pin to stretch in, so that the long supporting leg of the flat cotter pin can be clamped to achieve primary opening overturning, and the lower end of the crank flat opening sleeve is bent to form an obtuse-angle L-shaped structure. And the bottom end of the bent section of the crank flat opening sleeve is provided with an elliptical flat opening for inserting the opened supporting leg, so that the supporting leg can be sleeved with the elliptical flat opening respectively to be overturned outwards to be attached to the outer wall of the flat hole round pin, and the crank flat opening sleeve has the advantages that operation is convenient and flexible, time and labor are saved in the installation process, the splitting efficiency is high, the overturning angle of the flat opening pin supporting leg is standardized, and the operation process is standardized.

Description

Technical Field

[0001] The utility model belongs to the technical field of installation of flat hole round pins, and in particular relates to a turning tool used for installation of a flat hole round pin connection structure. Background Art

[0002] The flat hole round pin connection structure is mainly composed of a flat hole round pin, a flat cotter pin and a washer, but its installation operation is not standardized. Usually, during the installation process, a crowbar is used to support the large head end of the flat cotter pin in the through hole, and then a hammer is used to knock the long and short legs of the flat cotter pin to open it. Because the flat cotter pin rotates with the pin shaft and the working space is small, it is inconvenient for operators to operate, the installation process is time-consuming and labor-intensive, the splitting efficiency is low, and the quality cannot be guaranteed. Utility Model Content

[0003] The utility model aims to provide a flip tool for installing a flat hole round pin connection structure. The tool is simple and convenient to operate, and the splitting efficiency is guaranteed. The problem that a crowbar is used to support the through hole of the big head end of the flat cotter pin during the installation process, and then a hammer is used to hit the long and short legs of the flat cotter pin to make it open is solved, resulting in inconvenience for operators to operate, time-consuming and labor-intensive installation, low splitting efficiency, and poor quality assurance.

[0004] To this end, the technical solution adopted by the utility model is: a flipping tool for installing a flat hole round pin connecting structure, the flat cotter pin is inserted into the flat hole of the flat hole round pin, and is characterized in that: it includes a crank flat mouth sleeve, a long leg opening block installed at the top of the vertical round rod of the crank flat mouth sleeve, and a short leg opening block installed at the bottom of the long leg opening block. The short leg opening block is provided with a limiting notch for the long leg of the flat cotter pin to extend into on one side close to the long leg opening block, so that the long leg of the flat cotter pin can be clamped to achieve a preliminary flipping opening. The lower end of the crank flat mouth sleeve is bent to form an obtuse "L"-shaped structure, and the bottom end of the bent section of the crank flat mouth sleeve is provided with an elliptical flat mouth for the leg after opening to be inserted, so that the leg can be respectively covered and flipped outward to fit the outer wall of the flat hole round pin.

[0005] As a preferred embodiment of the above scheme, the short leg opening block is fixedly installed on the lower part of the long leg opening block by means of an upper and lower spaced bolt assembly, and the upper and lower spaced bolts are firmly connected to tighten the short leg opening block and the long leg opening block.

[0006] Further preferably, the bolt assembly includes a connecting screw, a buffer washer and a locking nut, and has a reasonable structural design.

[0007] Further preferably, the leg opening long block is mounted on the top of the crank flat sleeve through a mounting base, and the mounting structure is reasonable.

[0008] Further preferably, the leg opening long block, the mounting base, and the crank flat sleeve are all connected by welding, and the connection is stable.

[0009] Further preferably, the upper vertical section of the crank flat-mouth sleeve is a hollow cylindrical structure, and the bottom bent section is a hollow oblate structure, and the structural design is reasonable.

[0010] Beneficial effects of the utility model:

[0011] (1) Compared with using a crowbar to support the through hole of the large end of the flat cotter pin and then using a hammer to knock the long and short legs of the flat cotter pin to open it during the installation process, this solution uses a flipping tool to flexibly flip the legs of the flat cotter pin. The top end of the flipping tool clamps the long leg of the flat cotter pin and slightly flips it outward to split it to achieve the initial opening of the flat cotter pin leg. Then, the bottom end of the flipping tool is successively wrapped around the legs and flipped and rolled up to fit the flat hole round pin. The design structure is interlocking, the operation is convenient and flexible, the installation process is time-saving and labor-saving, the splitting efficiency is high, and the risk of the flat cotter pin detaching from the flat hole round pin is effectively avoided.

[0012] (2) The first flip of the top of the flipping tool and the subsequent flipping of the bottom end can achieve fast operation, ensure the tight connection between the flat hole round pin and the flat cotter pin, realize the standardization of the flipping angles of the long and short legs of the flat cotter pin, standardize the operation process, and make the process method clear, which is convenient for workshop management and personnel allocation. The tools can be recycled, saving cost.

[0013] To sum up, it has the advantages of convenient and flexible operation, time-saving and labor-saving installation process, high splitting efficiency, standardized flipping angle of flat cotter pin support legs, and standardized operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 The utility model is a schematic diagram of the use of the long support leg for clamping the flat cotter pin at the top.

[0016] Figure 3 The utility model is a schematic diagram of the use of the bottom end of the flat cotter pin support leg.

[0017] Figure 4 It is a schematic diagram of the structure of the flat cotter pin after flipping is completed. DETAILED DESCRIPTION

[0018] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0019] Combination Figure 1 — Figure 4As shown, a flipping tool for installing a flat hole round pin connection structure, a flat cotter pin 4 is inserted into the flat hole of a flat hole round pin 3, and the flipping tool consists of a crank flat mouth sleeve 61, a leg opening long block 62 installed on the top of the vertical round rod of the crank flat mouth sleeve 61, and a leg opening short block 63 installed at the bottom of the leg opening long block 62.

[0020] A limiting notch 631 is provided on one side of the leg opening short block 63 close to the leg opening long block 62 for the long leg 41 of the flat cotter pin 4 to extend into, so that the long leg 41 of the flat cotter pin 4 can be clamped to achieve a preliminary flip opening.

[0021] The lower end of the crank flat-mouth sleeve 61 is bent to form an obtuse "L"-shaped structure, and the bottom end of the bent section of the crank flat-mouth sleeve 61 is provided with an elliptical flat mouth 611 for the opening of the support leg 41 to be inserted, so that the support leg 41 can be respectively covered and turned outward to fit the outer wall of the flat hole round pin 3.

[0022] The short leg opening block 63 is fixedly mounted on the lower part of the long leg opening block 62 by using bolt assemblies spaced apart from each other.

[0023] The bolt assembly consists of a connecting screw 632 , a buffer washer 633 and a locking nut 634 .

[0024] The leg opening long block 62 is mounted on the top of the crank flat sleeve 61 through the mounting base 64 .

[0025] The leg opening long block 62, the mounting base 64 and the crank flat sleeve 61 are all connected by welding.

[0026] The upper vertical section of the crank flat-mouth sleeve 61 is a hollow cylindrical structure, and the bottom bent section is a hollow oblate structure.

[0027] First, insert the flat cotter pin 4 into the flat hole of the flat hole round pin 3 to prevent the flat hole round pin 3 from moving and falling off;

[0028] Then fix the relative positions of the flat cotter pin 4 and the flat hole round pin 3;

[0029] Then, the top of the turning tool 6 is used to clamp the long leg 41 of the flat cotter pin 4 and cooperate with the auxiliary turning tool 5 to reversely turn the cotter pin for the first time to complete the opening;

[0030] Finally, the bottom end of the flipping tool 6 is used to sequentially cover the two legs 41 of different lengths of the flat cotter pin 4, and the auxiliary flipping tool 5 is used to exert reverse force to fold the legs 41 outwards to fit the outer wall of the flat hole round pin 3.

Claims

1. A turning tool for installing a flat hole round pin connection structure, wherein a flat cotter pin (4) is inserted into a flat hole of a flat hole round pin (3), characterized in that: The invention comprises a crank flat-mouth sleeve (61), a leg opening long block (62) installed at the top of a vertical round rod of the crank flat-mouth sleeve (61), and a leg opening short block (63) installed at the bottom of the leg opening long block (62). The leg opening short block (63) is provided with a limiting notch (631) for the long leg (41) of the flat cotter pin (4) to extend into on one side of the leg opening long block (62), so that the long leg (41) of the flat cotter pin (4) can be clamped to achieve a preliminary flip opening. The lower end of the crank flat-mouth sleeve (61) is bent to form an obtuse "L"-shaped structure. The bottom end of the bent section of the crank flat-mouth sleeve (61) is provided with an elliptical flat opening (611) for the leg (41) after opening to be inserted into, so that the leg (41) can be respectively covered and flipped outward to fit the outer wall of the flat hole round pin (3).

2. A turning tool for installing a flat hole round pin connection structure according to claim 1, characterized in that: The support leg opening short block (63) is fixedly mounted on the lower part of the support leg opening long block (62) by using bolt assemblies spaced apart from each other.

3. A turning tool for installing a flat hole round pin connection structure according to claim 2, characterized in that: The bolt assembly comprises a connecting screw rod (632), a buffer washer (633) and a locking nut (634).

4. A turning tool for installing a flat hole round pin connection structure according to claim 1, characterized in that: The leg opening long block (62) is mounted on the top end of the crank flat sleeve (61) via a mounting base (64).

5. The turning tool for installing a flat hole round pin connection structure according to claim 1, characterized in that: The support leg opening long block (62), the mounting base (64) and the crank flat-mouth sleeve (61) are all connected by welding.

6. A turning tool for installing a flat hole round pin connection structure according to claim 1, characterized in that: The upper vertical section of the crank flat-mouth sleeve (61) is a hollow cylindrical structure, and the bottom bent section is a hollow oblate structure.

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