Auxiliary device for measuring engine crankshaft parameters

Abstract

The present invention provides an auxiliary device for measuring engine crankshaft parameters, which belongs to the technical field of engine detection devices. The auxiliary device for measuring engine crankshaft parameters includes a drive measuring mechanism, a crankshaft fixing connection mechanism and a crankshaft body. The drive measuring mechanism includes a motor, a gearbox, a torque sensor and a coupling. The gearbox input end is connected to the motor output shaft. The coupling is respectively connected to the gearbox output end and one end of the torque sensor. The crankshaft fixing connection mechanism includes a mechanical chuck, a fixed disc seat, a sleeve and a fixing piece. The fixed disc seat is fixedly installed on one side of the mechanical chuck. The present invention uses a mechanical chuck in the crankshaft fixing connection mechanism to fix the end of the crankshaft body. By adjusting the distance between the claws in the mechanical chuck, it can be used to fix and install crankshafts of various sizes and specifications, so that crankshafts of various specifications can be quickly installed and replaced for detection.

Description

Technical Field

[0001] The invention relates to the field of engine detection devices, and in particular to an auxiliary device for measuring engine crankshaft parameters. Background Art

[0002] The crankshaft is an important component of the engine. It is subjected to the combined effects of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which causes the crankshaft to be subjected to bending and torsional loads. Therefore, the crankshaft's rotational torque needs to be tested after production.

[0003] When the engine crankshaft is performing rotational torque detection, a coupling is required to connect the crankshaft end and the torque sensor. However, when detecting couplings of different models, it is often necessary to replace the couplings of the corresponding model. Repeated disassembly of the coupling for installation of couplings of different models and specifications is troublesome, which affects the detection efficiency. Summary of the invention

[0004] In order to make up for the above shortcomings, the present invention provides an auxiliary device for measuring engine crankshaft parameters, aiming to improve the problem that when detecting couplings of different models, it is often necessary to replace the corresponding models of couplings.

[0005] The present invention is achieved in that:

[0006] The invention provides an auxiliary device for measuring engine crankshaft parameters, comprising a driving and measuring mechanism, a crankshaft fixing and connecting mechanism and a crankshaft body.

[0007] The drive measuring mechanism includes a motor, a gearbox, a torque sensor and a coupling. The gearbox input end is connected to the motor output shaft, and the coupling is respectively connected to the gearbox output end and one end of the torque sensor. The crankshaft fixed connection mechanism includes a mechanical chuck, a fixed disc seat, a sleeve and a fixing part. The fixed disc seat is fixedly installed on one side of the mechanical chuck, and one end of the sleeve is fixedly arranged on the side of the fixed disc seat away from the mechanical chuck. The fixing part is installed on the outside of the sleeve, and the other end of the torque sensor is fixedly inserted into the inside of the sleeve. The end of the crankshaft body is clamped and fixed to one side of the mechanical chuck.

[0008] In one embodiment of the present invention, the fixing member includes an adjusting bolt, a first threaded hole is opened on the outer side of the sleeve, the adjusting bolt rod end is threadedly engaged with the first threaded hole, and the adjusting bolt rod end extends into the interior of the sleeve.

[0009] In an embodiment of the present invention, a box body is fixedly arranged outside the sleeve, and the screw rod of the adjusting bolt movably passes through the top and bottom of the box body.

[0010] In one embodiment of the present invention, a spring and a limiting ring are respectively arranged inside the box body, the spring is arranged above the limiting ring, the rod end of the adjusting bolt passes through the spring and the limiting ring respectively, and the limiting ring is fixedly connected to the adjusting bolt.

[0011] In an embodiment of the present invention, a groove is provided on the outer side of the sleeve, and the bottom of the box body is fixedly installed inside the groove.

[0012] In one embodiment of the present invention, the box body includes a lower box shell and a box cover, the box cover is fixedly installed on the top of the lower box shell, and the rod ends of the adjusting bolts are movably inserted through the box cover and the lower box shell respectively.

[0013] In an embodiment of the present invention, through holes are respectively formed on the box cover and the lower box shell, and the rod ends of the adjusting bolts are movably inserted through the through holes.

[0014] In one embodiment of the present invention, a fixing bolt is installed between the mechanical chuck and the fixed disk seat, a second threaded hole is opened on the side of the mechanical chuck close to the fixed disk seat, and the rod end of the fixing bolt is threadedly engaged with the second threaded hole.

[0015] In one embodiment of the present invention, a limiting block is provided inside the sleeve.

[0016] In one embodiment of the present invention, an elastic gasket is provided between the mechanical chuck and the fixed disc seat.

[0017] The beneficial effects of the present invention are as follows: the auxiliary device for measuring engine crankshaft parameters obtained by the present invention through the above-mentioned design uses the sleeve and the fixing part in the crankshaft fixing connection mechanism to connect the rod end of the torque sensor, and uses the mechanical chuck in the crankshaft fixing connection mechanism to fix the end of the crankshaft body. By adjusting the distance between the claws in the mechanical chuck, it can be used to fix and install crankshafts of various sizes and specifications, so that the detection device as a whole can quickly and efficiently detect crankshafts of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of an auxiliary device for measuring engine crankshaft parameters provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of a crankshaft fixing connection mechanism provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of a fixing member provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of a structure in which a fixing member without a lower box shell is provided in an embodiment of the present invention.

[0023] In the figure: 10-drive measuring mechanism; 110-motor; 120-gearbox; 130-torque sensor; 140-coupling; 20-crankshaft fixing connection mechanism; 210-mechanical chuck; 220-fixed disc seat; 230-sleeve; 240-fixing piece; 241-adjusting bolt; 242-box body; 243-limiting ring; 244-spring; 245-lower box shell; 246-box cover; 250-limiting block; 260-elastic gasket; 270-fixing bolt; 30-crankshaft body. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. Example

[0031] See also Figure 1 The present invention provides an auxiliary device for measuring engine crankshaft parameters, including a drive measurement mechanism 10, a crankshaft fixing connection mechanism 20 and a crankshaft body 30.

[0032] The driving and measuring mechanism 10 fixes the crankshaft body 30 through the crankshaft fixing and connecting mechanism 20 for torque detection. The crankshaft fixing and connecting mechanism 20 can be adjusted to fix and install crankshafts of various specifications and sizes.

[0033] See also Figure 1 The drive measuring mechanism 10 includes a motor 110, a gearbox 120, a torque sensor 130 and a coupling 140. The input end of the gearbox 120 is connected to the output shaft of the motor 110, and the coupling 140 is connected to the output end of the gearbox 120 and one end of the torque sensor 130 respectively.

[0034] It should be noted that the specific models and specifications of the motor 110, the gearbox 120, the torque sensor 130 and the coupling 140 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail. The power supply and principle of the motor 110 and the torque sensor 130 are clear to those skilled in the art and will not be described in detail here.

[0035] See also Figure 2 The crankshaft fixed connection mechanism 20 includes a mechanical chuck 210, a fixed disc seat 220, a sleeve 230 and a fixing member 240. The fixed disc seat 220 is fixedly installed on one side of the mechanical chuck 210, and one end of the sleeve 230 is fixedly arranged on the side of the fixed disc seat 220 away from the mechanical chuck 210, and the sleeve 230 and the fixed disc seat 220 are fixed by welding. The fixing member 240 is installed on the outside of the sleeve 230, and the other end of the torque sensor 130 is fixedly inserted into the inside of the sleeve 230. A limit block 250 is arranged on the inner side of the sleeve 230; the limit block 250 cooperates with the slot of the torque sensor 130 to improve the stability of the connection. The end of the crankshaft body 30 is fixed to one side of the mechanical chuck 210. A fixing bolt 270 is installed between the mechanical chuck 210 and the fixed disc seat 220. A second threaded hole is opened on the side of the mechanical chuck 210 close to the fixed disc seat 220. The rod end of the fixing bolt 270 is screwed into the second threaded hole. The fixing bolt 270 is used to fix the fixed disc seat 220 on the back of the mechanical chuck 210. An elastic gasket 260 is arranged between the mechanical chuck 210 and the fixed disc seat 220. The elastic gasket 260 is a rubber gasket, which increases the friction between the mechanical chuck 210 and the fixed disc seat 220, so that the fixing of the mechanical chuck 210 and the fixed disc seat 220 by the fixing bolt 270 is more stable.

[0036] See also Figure 3 and Figure 4The fixing member 240 includes an adjusting bolt 241. A first threaded hole is provided on the outer side of the sleeve 230. The rod end of the adjusting bolt 241 is threadedly engaged with the first threaded hole, and the rod end of the adjusting bolt 241 extends into the interior of the sleeve 230. The rod end of the adjusting bolt 241 in the fixing member 240 is inserted into the slot at the end of the torque sensor 130 to fix the torque sensor 130. A box body 242 is fixedly provided on the outer side of the sleeve 230. The sleeve 230 and the box body 242 are fixed by welding. The screw rod of the adjusting bolt 241 movably passes through the top and bottom of the box body 242. A groove is provided on the outer side of the sleeve 230. The bottom of the box body 242 is fixedly installed inside the groove. The groove is used to embed and install the box body 242. A spring 244 and a stop ring 243 are respectively arranged inside the box body 242. The spring 244 is arranged above the stop ring 243. The rod ends of the adjusting bolt 241 respectively penetrate the spring 244 and the stop ring 243, and the stop ring 243 is fixedly connected to the adjusting bolt 241. The spring 244 is subjected to the pressure of the top wall inside the box body 242, so that the spring 244 presses the stop ring 243 and the adjusting bolt 241, so that the adjusting bolt 241 has a good anti-loosening effect. The box body 242 includes a lower box shell 245 and a box cover 246. The box cover 246 is fixedly installed on the top of the lower box shell 245, and the rod ends of the adjusting bolt 241 are respectively movably penetrated through the box cover 246 and the lower box shell 245. Through holes are respectively opened on the box cover 246 and the lower box shell 245, and the rod ends of the adjusting bolt 241 are respectively movably penetrated through the through holes; the through holes are used to movably install the rod ends of the adjusting bolts 241.

[0037] The working principle of the auxiliary device for measuring engine crankshaft parameters is as follows: when in use, the mechanical chuck 210 in the crankshaft fixing connection mechanism 20 is used to fix the end of the crankshaft body 30, and the distance between the claws in the mechanical chuck 210 can be adjusted to fix and install crankshafts of various sizes; the sleeve 230 and the fixing member 240 in the crankshaft fixing connection mechanism 20 are used to connect the rod end of the torque sensor 130. The motor 110 drives the coupling 140 and the torque sensor 130 to rotate through the gearbox 120, and finally drives the crankshaft body 30 to rotate through the crankshaft fixing connection mechanism 20, completing the torque detection of the crankshaft body 30.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary device for measuring engine crankshaft parameters, characterized in that: include A drive measurement mechanism (10), the drive measurement mechanism (10) comprising a motor (110), a gearbox (120), a torque sensor (130) and a coupling (140), the gearbox (120) input end being connected to an output shaft of the motor (110), and the coupling (140) being respectively connected to an output end of the gearbox (120) and one end of the torque sensor (130); A crankshaft fixing connection mechanism (20), the crankshaft fixing connection mechanism (20) comprising a mechanical chuck (210), a fixing disc seat (220), a sleeve (230) and a fixing member (240), the fixing disc seat (220) being fixedly mounted on one side of the mechanical chuck (210), and one end of the sleeve (230) being fixedly arranged on a side of the fixing disc seat (220) away from the mechanical chuck (210), the fixing member (240) being mounted on the outside of the sleeve (230), and the other end of the torque sensor (130) being fixedly plugged into the inside of the sleeve (230); A crankshaft body (30), an end of the crankshaft body (30) being clamped and fixed to one side of the mechanical chuck (210); The fixing member (240) comprises an adjusting bolt (241), a first threaded hole is formed on the outer side of the sleeve (230), a rod end of the adjusting bolt (241) is threadedly engaged with the first threaded hole, and the rod end of the adjusting bolt (241) extends into the interior of the sleeve (230); A box body (242) is fixedly disposed outside the sleeve (230), and a screw rod of the adjusting bolt (241) movably penetrates the top and bottom of the box body (242); A spring (244) and a limiting ring (243) are respectively arranged inside the box body (242); the spring (244) is arranged above the limiting ring (243); the rod end of the adjusting bolt (241) passes through the spring (244) and the limiting ring (243) respectively; and the limiting ring (243) is fixedly connected to the adjusting bolt (241); The outer side of the sleeve (230) is provided with a groove, and the bottom of the box body (242) is fixedly installed inside the groove; The box body (242) comprises a lower box shell (245) and a box cover (246), wherein the box cover (246) is fixedly mounted on the top of the lower box shell (245), and the rod end of the adjusting bolt (241) movably penetrates the box cover (246) and the lower box shell (245).

2. The auxiliary device for measuring engine crankshaft parameters according to claim 1, characterized in that: The box cover (246) and the lower box shell (245) are respectively provided with through holes, and the rod ends of the adjusting bolts (241) are movably inserted through the through holes.

3. The auxiliary device for measuring engine crankshaft parameters according to claim 1, characterized in that: A fixing bolt (270) is installed between the mechanical chuck (210) and the fixed disc seat (220), a second threaded hole is provided on a side of the mechanical chuck (210) close to the fixed disc seat (220), and a rod end of the fixing bolt (270) is threadedly engaged with the second threaded hole.

4. The auxiliary device for measuring engine crankshaft parameters according to claim 1, characterized in that: A limit block (250) is arranged inside the sleeve (230).

5. The auxiliary device for measuring engine crankshaft parameters according to claim 1, characterized in that: An elastic gasket (260) is provided between the mechanical chuck (210) and the fixed disc seat (220).

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