A device for detecting the engagement torque between a bearing and an injection molding pulley

Abstract

The present invention belongs to the field of bite detection of injection molding pulleys and bearings, and specifically discloses a detection device for the bite torque of bearings and injection molding pulleys and its installation detection method, including a fixed plate, a measuring base, a measuring piece and a connecting measuring mechanism, wherein the fixed plate is placed on the measuring base and connected to the measuring base by bolts, a pressing plate is fixed on the fixed plate by bolts, and the pressing plate and the fixed plate cooperate to press the measuring piece; the measuring piece is an injection molding pulley formed by the outer ring of a plastic-coated bearing, and four connecting grooves are provided on the outer ring of the bearing of the injection molding pulley; the connecting measuring mechanism is placed on the upper part of the pressing plate, and the connecting measuring mechanism includes a connecting sleeve, a torque measuring connector and a first connecting pin, and the torque measuring connector and the first connecting pin are installed on the connecting sleeve, and the torque measuring connector is fixed to the connecting sleeve by the first connecting pin to form a whole. The present invention facilitates the detection of the combined torque value of the injection molding pulley and the bearing, thereby judging the bonding strength of the bearing and the injection molding pulley.

Description

Technical Field

[0001] The invention relates to the field of bite detection of an injection molding pulley and a bearing, and in particular to a detection device for bite torque of a bearing and an injection molding pulley and an installation detection method thereof. Background Art

[0002] The front gear train of the engine is generally driven by a crankshaft damping pulley through a belt to drive front accessories such as water pumps, fans, air conditioning compressors, power steering pumps, and generators. There are belt wrap angle requirements for the pulleys of each accessory. In order to meet the wrap angle requirements of each pulley, in most cases, an idler pulley needs to be introduced into the gear train.

[0003] The idler and tensioner trains of automobile engines generally have injection molded pulleys and bearings. During installation inspection, it is necessary to detect the combined torque value of the injection molded pulley and the bearing, and then judge the bonding strength between the bearing and the injection molded pulley. Therefore, a detection device for the bite torque of the bearing and the injection molded pulley is needed. Summary of the invention

[0004] The object of the present invention is to provide a device for detecting the engagement torque between a bearing and an injection molding pulley and a method for installing and detecting the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting the engagement torque of a bearing and an injection molded pulley, comprising a fixed plate, a measuring base, a measuring piece and a connecting measuring mechanism, wherein the fixed plate is placed on the measuring base and is connected to the measuring base as a whole by bolts, a pressure plate is fixedly mounted on the fixed plate by bolts, and the pressure plate and the fixed plate cooperate to press the measuring piece; the measuring piece is an injection molded pulley formed by the outer ring of a plastic-coated bearing, and four connecting grooves are provided on the outer ring of the bearing of the injection molded pulley; the connecting measuring mechanism is placed on the upper part of the pressure plate, and the connecting measuring mechanism comprises a connecting sleeve, a torque measuring connector and a first connecting pin, a torque measuring connector and a first connecting pin are installed on the connecting sleeve, and the torque measuring connector is fixed to the connecting sleeve as a whole by the first connecting pin; the lower part of the connecting sleeve is connected to a connecting shaft by a second connecting pin, the end of the connecting shaft is close to the measuring piece, and a plug-in block is provided at the end of the connecting shaft.

[0006] Preferably, the plug-in block is a plug-in boss, which is plug-fitted with a connecting groove provided on the bearing outer ring of the measuring piece and fixes the measuring piece.

[0007] Preferably, the four connecting grooves are annular and equidistantly distributed on the outer ring of the bearing of the measuring piece, and the connecting grooves are plum blossom grooves or square grooves.

[0008] Preferably, the plug-in bosses on the connecting shaft are plugged into the four connecting grooves in a one-to-one correspondence, and the plug-in bosses are plum blossom plug-in bosses or square plug-in bosses.

[0009] The present invention also provides a method for installing and detecting the above-mentioned device for detecting the engagement torque between a bearing and an injection molding pulley, comprising the following steps:

[0010] S1: Open the connection groove and connect and install the fixing plate and the pressure plate, the connecting sleeve and the torque measuring connector, and the connecting shaft;

[0011] S2: insert the plug-in boss of the connecting shaft into the connecting groove of the measuring piece to fix the measuring piece;

[0012] S3: After the measuring piece is fixed, the torque measuring connector drives the connecting shaft to twist together. At this time, the injection molding pulley is fixed and does not rotate. The outer ring of the bearing is driven by the connecting shaft to form a relative twisting trend with the injection molding pulley. By detecting the torque value of the bearing and the injection molding pulley, the bonding strength of the bearing and the injection molding pulley is judged.

[0013] Preferably, the installation of the fixed plate and the pressure plate, the connecting sleeve and the torque measuring connector, and the connecting shaft in S1 includes: S11: processing four connecting grooves on the outer ring of the bearing of the measuring piece; S12: connecting and fixing the fixed plate to the measuring base as a whole through four fixing bolts; S13: placing the measuring piece between the fixed plate and the pressure plate, and connecting and fixing it to the fixed plate through bolts, while pressing the measuring piece; S14: inserting the torque measuring connector into the upper part of the connecting sleeve, and inserting the first connecting pin to fix them into one, and installing the connecting shaft at the lower part of the connecting sleeve through the second connecting pin.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention facilitates detection of the combined torque value of the injection molding pulley and the bearing, thereby judging the combination strength of the bearing and the injection molding pulley. The detection method is simple, and the detection tool matched with the detection method has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the measuring piece of the present invention;

[0018] Figure 3 It is a structural schematic diagram of the connecting sleeve of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the connecting shaft of the present invention.

[0020] In the figure: 1, fixing plate; 2, pressing plate; 3, measuring piece; 31, connecting groove; 4, connecting sleeve; 5, torque measuring connector; 6, first connecting pin; 7, second connecting pin; 8, connecting shaft; 81, plug-in block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-4 The present invention provides a technical solution: a detection device for the engagement torque of a bearing and an injection molded pulley, comprising a fixed plate 1, a measuring base, a measuring piece 3 and a connecting measuring mechanism, wherein the fixed plate 1 is placed on the measuring base and connected to the measuring base as a whole by bolts, a pressing plate 2 is fixedly mounted on the fixed plate 1 by bolts, the pressing plate 2 cooperates with the fixed plate 1 and is used to press the measuring piece 3; the measuring piece 3 is an injection molded pulley formed by the outer ring of a plastic-coated bearing, and four connecting grooves 31 are provided on the outer ring of the bearing of the injection molded pulley; the connecting measuring mechanism is placed on the upper part of the pressing plate 2, the connecting measuring mechanism comprises a connecting sleeve 4, a torque measuring connector 5 and a first connecting pin 6, the connecting sleeve 4 is provided with a torque measuring connector 5 and a first connecting pin 6, the torque measuring connector 5 is fixed to the connecting sleeve 4 as a whole by the first connecting pin 6; the lower part of the connecting sleeve 4 is connected to a connecting shaft 8 by a second connecting pin 7, the end of the connecting shaft 8 is close to the measuring piece 3, and a plug-in block 81 is provided at the end of the connecting shaft 8.

[0025] In this embodiment, the plug-in block 81 is a plug-in boss, which is plug-fitted with the connecting groove 31 provided on the bearing outer ring of the measuring piece 3 to fix the measuring piece 3.

[0026] In this embodiment, four connecting grooves 31 are annular and equidistantly distributed on the outer ring of the bearing of the measuring member 3 , and the connecting grooves 31 are plum blossom grooves or square grooves.

[0027] In this embodiment, the plug-in bosses on the connecting shaft 8 are plugged into the four connecting grooves 31 in a one-to-one correspondence, and the plug-in bosses are plum blossom plug-in bosses or square plug-in bosses.

[0028] The present invention also provides a method for installing and detecting the above-mentioned device for detecting the engagement torque between a bearing and an injection molding pulley, comprising the following steps:

[0029] S1: opening the connection groove 31 and connecting and installing the fixing plate 1 and the pressing plate 2, the connecting sleeve 4 and the torque measuring connector 5, and the connecting shaft 8;

[0030] S2: inserting the plug-in boss of the connecting shaft 8 into the connecting groove 31 of the measuring member 3 to fix the measuring member 3;

[0031] S3: After the measuring piece 3 is fixed, the torque measuring connector 5 drives the connecting shaft 8 to twist together. At this time, the injection molding pulley is fixed and does not rotate. The outer ring of the bearing is driven by the connecting shaft 8 to twist relative to the injection molding pulley. By detecting the torque value of the bearing and the injection molding pulley, the bonding strength of the bearing and the injection molding pulley is judged.

[0032] In this embodiment, the installation of the fixed plate 1 and the pressure plate 2, the connecting sleeve 4 and the torque measuring connector 5, and the connecting shaft 8 in S1 includes: S11: processing four connecting grooves 31 on the bearing outer ring of the measuring piece 3; S12: connecting and fixing the fixed plate 1 to the measuring base through four fixing bolts; S13: placing the measuring piece 3 between the fixed plate 1 and the pressure plate 2, and connecting and fixing it to the fixed plate 1 through bolts, while pressing the measuring piece 3; S14: inserting the torque measuring connector 5 into the upper part of the connecting sleeve 4, and inserting the first connecting pin 6 to fix them into one, and installing the connecting shaft 8 at the lower part of the connecting sleeve 4 through the second connecting pin 7.

[0033] The present invention facilitates detection of the combined torque value of the injection molding pulley and the bearing, thereby judging the combination strength of the bearing and the injection molding pulley. The detection method is simple, and the detection tool matched with the detection method has a simple structure and is easy to use.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the engagement torque between a bearing and an injection molding pulley, It is characterized in that The invention comprises a fixing plate (1), a measuring base, a measuring piece (3) and a connecting measuring mechanism, wherein the fixing plate (1) is placed on the measuring base and connected to the measuring base by bolts, a pressing plate (2) is fixed on the fixing plate (1) by bolts, the pressing plate (2) cooperates with the fixing plate (1) and is used to press the measuring piece (3); the measuring piece (3) is an injection molded pulley formed by a plastic-coated bearing outer ring, and four connecting grooves (31) are provided on the bearing outer ring of the injection molded pulley; the connecting measuring mechanism is placed on the upper part of the pressing plate (2), the connecting measuring mechanism comprises a connecting sleeve (4), a torque measuring connector (5) and a first connecting pin (6), and a torque measuring connector is provided on the connecting sleeve (4). The torque measuring connector (5) is fixed to the connecting sleeve (4) via the first connecting pin (6) as a whole; the lower part of the connecting sleeve (4) is connected to a connecting shaft (8) via a second connecting pin (7); the end of the connecting shaft (8) is close to the measuring piece (3); a plug-in block (81) is provided at the end of the connecting shaft (8); the plug-in block (81) is a plug-in boss; the plug-in boss is plug-fitted with a connecting groove (31) provided on the bearing outer ring of the measuring piece (3) to fix the measuring piece (3); the four connecting grooves (31) are annular and equidistantly distributed on the bearing outer ring of the measuring piece (3); the connecting grooves (31) are plum blossom grooves or square grooves.

2. A device for detecting the engagement torque between a bearing and an injection molding pulley according to claim 1, It is characterized in that The plug-in bosses on the connecting shaft (8) are plugged into the four connecting grooves (31) in a one-to-one correspondence, and the plug-in bosses are plum blossom plug-in bosses or square plug-in bosses.

3. A method for installing and detecting a device for detecting the engagement torque between a bearing and an injection molding pulley according to any one of claims 1 to 2, It is characterized in that The steps include: S1: opening the connection groove (31) and connecting and installing the fixing plate (1) and the pressing plate (2), the connecting sleeve (4) and the torque measuring connector (5), and the connecting shaft (8); S2: inserting the plug-in boss of the connecting shaft (8) into the connecting groove (31) of the measuring member (3) to fix the measuring member (3); S3: After the measuring piece (3) is fixed, the torque measuring connector (5) drives the connecting shaft (8) to twist together. At this time, the injection molding pulley is fixed and does not rotate. The outer ring of the bearing is driven by the connecting shaft (8) to twist relative to the injection molding pulley. By detecting the torque value of the bearing and the injection molding pulley, the bonding strength of the bearing and the injection molding pulley is judged.

4. The installation and detection method of the device for detecting the engagement torque between a bearing and an injection molding pulley according to claim 3, It is characterized in that The installation of the fixed plate (1) and the pressure plate (2), the connecting sleeve (4) and the torque measuring connector (5), and the connecting shaft (8) in S1 includes: S11: processing four connecting grooves (31) on the bearing outer ring of the measuring piece (3); S12: connecting and fixing the fixed plate (1) to the measuring base through four fixing bolts to form a whole; S13: placing the measuring piece (3) between the fixed plate (1) and the pressure plate (2), and connecting and fixing it to the fixed plate (1) through bolts, while pressing the measuring piece (3); S14: inserting the torque measuring connector (5) into the upper part of the connecting sleeve (4), and inserting the first connecting pin (6) to fix them into a whole, and installing the connecting shaft (8) at the lower part of the connecting sleeve (4) through the second connecting pin (7).

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