Coaxiality testing fixture for flywheel housing of engine

Abstract

The utility model relates to the technical field of engine detection, and discloses an engine flywheel housing coaxiality testing fixture, which comprises a base, a first V-shaped frame is fixedly mounted on the top of the base, a second V-shaped frame is slidably mounted on the top of the base, a rotating assembly is mounted on the first V-shaped frame, a detection assembly is further mounted on the top of the base, and the second V-shaped frame is slidably mounted on the second V-shaped frame. The first V-shaped frame and the second V-shaped frame are used for supporting a crankshaft, the rotating assembly is used for dragging the crankshaft to rotate around the axis of the crankshaft, and the detection assembly is used for pressing and positioning the crankshaft and detecting the coaxiality of the crankshaft and a flywheel shell. Compared with the prior art, manual rotation of the crankshaft is not needed, the automation degree is high, convenience is brought to operation of workers, and in addition, in the rotation process of the crankshaft, the stability of the crankshaft in the detection process is improved through pressing and positioning of the pressing roller.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine detection technical field more particularly to a kind of engine flywheel housing coaxiality testing fixture. BACKGROUND

[0002] Crankshaft is the main rotating component in engine, it converts the linear motion of piston into rotary motion, flywheel housing is the component of fixing flywheel in engine, it is usually directly connected with crankshaft, whether the coaxiality of flywheel housing and crankshaft meets standard requirement is crucial to the stable operation and performance of engine.

[0003] Currently when the coaxiality of flywheel housing and crankshaft is detected, the staff usually places crankshaft on V-shaped frame, makes the needle of dial gauge adhere to the surface of crankshaft, then rotates crankshaft to make it rotate around its own axis, makes the needle contact with each position on the surface of crankshaft, judges whether the coaxiality meets requirement by observing the jumping condition of pointer on dial gauge, but currently when rotating crankshaft, it is usually manually rotated by staff, it is inconvenient to operate, and the stability of crankshaft is poor during rotation, which will affect the result of detection. UTILITARY MODEL

[0004] In order to overcome the above-mentioned defects of prior art, the utility model provides a kind of engine flywheel housing coaxiality testing fixture to solve the problems in the above-mentioned background art.

[0005] The utility model provides the following technical scheme: a kind of engine flywheel housing coaxiality testing fixture, including base, the base top is fixedly installed with first V-shaped frame, the base top is slidably installed with second V-shaped frame, rotating assembly is installed on the first V-shaped frame, the base top is also installed with detection assembly, the first V-shaped frame and second V-shaped frame are used to support crankshaft, the rotating assembly is used to drag crankshaft to rotate around its own axis, the detection assembly is used to press tightly position crankshaft and detect the coaxiality of crankshaft and flywheel housing.

[0006] Preferably, the rotating assembly includes a fixed shell, the fixed shell is fixedly installed on the surface of the first V-shaped frame, the rotating rod and the transmission rod are rotatably installed inside the fixed shell, the rotating rod is symmetrically provided with two, one end of the rotating rod penetrates the first V-shaped frame, and a rotating roller is fixedly installed on one end of the rotating rod.

[0007] Preferably, a second gear is fixedly installed on the other end of the rotating rod, a first gear is fixedly installed on the surface of the transmission rod, the first gear is located between the two second gears, the first gear is meshed and connected with the second gear, one end of the transmission rod penetrates the inner wall of the fixed shell and extends outward, a motor is fixedly installed on the surface of the fixed shell, and the output end of the motor is fixedly connected with one end of the transmission rod.

[0008] Preferably, the detection assembly comprises a support frame, a receiving frame and a micrometer, the bottom of the support frame is fixedly connected with the top of the base, the bottom of the receiving frame is fixedly installed with a compression roller, the micrometer is fixedly installed on the receiving frame, and the bottom of the micrometer is provided with a needle.

[0009] Preferably, a threaded rod is rotatably installed on the support frame, a guide rod is fixedly installed on the support frame, a moving block is fixedly connected with the receiving frame, the inside of the moving block is threadedly connected with the surface of the threaded rod, and the inside of the moving block is slidably connected with the surface of the guide rod, the top end of the threaded rod extends upwards through the top of the support frame, and a rotating handle is fixedly connected with the top end of the threaded rod.

[0010] Preferably, a mounting groove is formed in the top of the base, a plurality of guide rods are fixedly installed in the mounting groove, a guide plate is fixedly installed at the bottom of the second V-shaped frame, and the guide plate is slidably installed on the surfaces of the guide rods.

[0011] The technical effects and advantages of the present application are as follows:

[0012] When the coaxiality is detected, the workman can place the crankshaft on the top of the first V-shaped frame and the second V-shaped frame, rotate the rotating handle by hand to make the bottom of the compression roller abut against the surface of the crankshaft, at the same time, the needle of the micrometer also abuts against the surface of the crankshaft, the motor drives the rotating roller to rotate around the rotating rod axis, under the traction of the rotating roller, the crankshaft also synchronously rotates around its own axis, each position on the surface of the crankshaft abuts against the needle, the workman can judge whether the coaxiality of the crankshaft meets the requirements by observing the jumping of the pointer on the dial of the micrometer, compared with the prior art, the present application does not need to manually rotate the crankshaft, has high automation, brings convenience for the operation of the workman, and in addition, in the process of rotating the crankshaft, the compression and positioning of the compression roller improve the stability of the crankshaft in the detection process. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the present application.

[0014] Figure 2 It is a fixed shell sectional view of the present application.

[0015] Figure 3 It is a detection assembly structure schematic view of the present application.

[0016] Figure 4 It is a structure enlarged view of A in the present application Figure 3

[0017] Figure 5 It is a second V-shaped frame structure schematic view of the present application.

[0018] ​The figure marks are: 1, base; 11, mounting groove; 12, guide rod; 2, first V-shaped frame; 3, second V-shaped frame; 31, guide plate; 4, rotating assembly; 41, fixed shell; 42, rotating rod; 43, rotating roller; 44, transmission rod; 45, first gear; 46, second gear; 47, motor; 5, detection assembly; 51, support frame; 52, bearing frame; 521, moving block; 53, compression roller; 54, micrometer; 541, needle; 55, threaded rod; 56, guide rod; 57, rotating handle. DETAILED DESCRIPTION

[0019] The technical scheme in the utility model will be described below in connection with the drawings in the utility model, and additionally, the forms of each structure described in the following implementation manners are only examples, and the engine flywheel housing coaxiality gauge involved by the utility model is not limited to each structure described in the following implementation manners, and all other implementation manners obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0020] The utility model provides a kind of engine flywheel housing coaxiality gauge, including base 1, first V-shaped frame 2 is fixedly installed on the top of base 1, second V-shaped frame 3 is slidably installed on the top of base 1, rotating assembly 4 is installed on first V-shaped frame 2, detection assembly 5 is also installed on the top of base 1, first V-shaped frame 2 and second V-shaped frame 3 are used to support crankshaft, rotating assembly 4 is used to pull crankshaft to rotate around its axis, and detection assembly 5 is used to compress and position crankshaft and detect the coaxiality of crankshaft and flywheel housing.

[0021] Further, rotating assembly 4 includes fixed shell 41, fixed shell 41 is fixedly installed on the surface of first V-shaped frame 2, rotating rod 42 and transmission rod 44 are rotatably installed in fixed shell 41, two rotating rods 42 are symmetrically arranged, one end of rotating rod 42 penetrates first V-shaped frame 2, and rotating roller 43 is fixedly installed on one end of rotating rod 42, second gear 46 is fixedly installed on the other end of rotating rod 42, first gear 45 is fixedly installed on the surface of transmission rod 44, first gear 45 is located between two second gears 46, first gear 45 is engagedly connected with second gear 46, one end of transmission rod 44 penetrates the inner wall of fixed shell 41 and extends outward, motor 47 is fixedly installed on the surface of fixed shell 41, the output end of motor 47 is fixedly connected with one end of transmission rod 44, motor 47 can drive transmission rod 44 to rotate around its axis, transmission rod 44 can drive rotating rod 42 to synchronously rotate around its axis by first gear 45 and second gear 46 while rotating, rotating roller 43 can be driven to synchronously rotate around the axis of rotating rod 42 while rotating rod 42 rotates, and two rotating rollers 43 rotate towards the same direction, when crankshaft is placed between two rotating rollers 43, rotating roller 43 can effectively pull crankshaft to rotate.

[0022] Further, the detection assembly 5 includes a support frame 51, a receiving frame 52 and a micrometer 54, the bottom of the support frame 51 is fixedly connected with the top of the base 1, the bottom of the receiving frame 52 is fixedly installed with a pressing roller 53, the micrometer 54 is fixedly installed on the receiving frame 52, the bottom of the micrometer 54 is provided with a needle 541, the micrometer 54 is prior art in the field of coaxiality detection, and details are not repeated here, the support frame 51 is rotatably installed with a threaded rod 55, the support frame 51 is fixedly installed with a guide rod 56, the receiving frame 52 is fixedly connected with a moving block 521, the inside of the moving block 521 is threadedly connected with the surface of the threaded rod 55, and the inside of the moving block 521 is slidably connected with the surface of the guide rod 56; the moving block 521 and the guide rod 56 form a sliding guide fit along the axis direction of the guide rod 56, the top end of the threaded rod 55 penetrates through the top of the support frame 51 and extends upwards, and the top end of the threaded rod 55 is fixedly connected with a rotating handle 57; a worker can rotate the rotating handle 57 by hand to make the threaded rod 55 rotate around its axis, and the receiving frame 52 can be driven by the moving block 521 to move synchronously in the vertical direction while the threaded rod 55 rotates.

[0023] Further, the top of the base 1 is provided with a mounting groove 11, a plurality of guide rods 12 are fixedly installed in the mounting groove 11, the bottom of the second V-shaped frame 3 is fixedly installed with a guide plate 31, and the guide plate 31 is slidably installed on the surface of the guide rod 12; through the sliding guide fit of the guide plate 31 and the guide rod 12, a worker can adjust the position of the second V-shaped frame 3, so as to change the supporting position of the second V-shaped frame 3 on the crankshaft.

[0024] The working principle of the utility model is: a worker places the crankshaft on the top of the first V-shaped frame 2 and the second V-shaped frame 3, rotates the rotating handle 57 by hand to make the threaded rod 55 rotate around its axis, the threaded rod 55 rotates and drives the receiving frame 52 to move synchronously downwards in the vertical direction through the moving block 521, so that the bottom of the pressing roller 53 and the surface of the crankshaft abut each other, and at the same time, the needle 541 of the micrometer 54 also abuts the surface of the crankshaft.

[0025] The motor 47 is started, the motor 47 drives the transmission rod 44 to rotate around its axis, the transmission rod 44 rotates and drives the rotating rod 42 to rotate synchronously around its axis through the first gear 45 and the second gear 46, the rotating rod 42 rotates and drives the rotating roller 43 to rotate synchronously around the axis of the rotating rod 42, under the traction of the rotating roller 43, the crankshaft also rotates synchronously around its axis, in the process of rotation, each position on the surface of the crankshaft abuts the needle 541, and a worker can judge whether the coaxiality of the crankshaft meets the requirements by observing the jumping of the pointer on the dial of the micrometer 54.

[0026] Finally should be explained a few points is: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the term "installation", "connected", "connection" should be broad, can be mechanical or electrical connection, but also can be two elements inside the communication, can be directly connected, "up", "down", "left", "right" and so on, only for indicating the relative position relationship, when the absolute position of the described object changes, the relative position relationship may change;

[0027] Second: the utility model discloses the embodiment in the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of not conflicting, the same embodiment and different embodiments of the utility model can be combined with each other;

[0028] Finally: the above only for the preferred embodiment of the utility model has, and does not for limiting the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A coaxiality gauge for an engine flywheel housing, comprising a base (1), characterized in that, A first V-shaped frame (2) is fixedly installed on the top of the base (1), and a second V-shaped frame (3) is slidably installed on the top of the base (1). A rotating component (4) is installed on the first V-shaped frame (2), and a detection component (5) is also installed on the top of the base (1). The first V-shaped frame (2) and the second V-shaped frame (3) are used to support the crankshaft. The rotating component (4) is used to pull the crankshaft to rotate around its own axis. The detection component (5) is used to press and position the crankshaft and detect the coaxiality of the crankshaft and the flywheel housing.

2. The coaxiality gauge for an engine flywheel housing according to claim 1, characterized in that, The rotating assembly (4) includes a fixed shell (41), which is fixedly installed on the surface of the first V-shaped frame (2). A rotating rod (42) and a transmission rod (44) are rotatably installed inside the fixed shell (41). There are two symmetrically arranged rotating rods (42). One end of the rotating rod (42) passes through the first V-shaped frame (2), and a rotating roller (43) is fixedly installed at one end of the rotating rod (42).

3. The coaxiality gauge for an engine flywheel housing according to claim 2, characterized in that, A second gear (46) is fixedly installed at the other end of the rotating rod (42), and a first gear (45) is fixedly installed on the surface of the transmission rod (44). The first gear (45) is located between the two second gears (46), and the first gear (45) meshes with the second gear (46). One end of the transmission rod (44) passes through the inner wall of the fixed shell (41) and extends outward. A motor (47) is fixedly installed on the surface of the fixed shell (41), and the output end of the motor (47) is fixedly connected to one end of the transmission rod (44).

4. The coaxiality gauge for an engine flywheel housing according to claim 1, characterized in that, The detection component (5) includes a support frame (51), a receiving frame (52), and a dial indicator (54). The bottom of the support frame (51) is fixedly connected to the top of the base (1). A pressure roller (53) is fixedly installed at the bottom of the receiving frame (52). The dial indicator (54) is fixedly installed on the receiving frame (52). A needle (541) is provided at the bottom of the dial indicator (54).

5. The coaxiality gauge for an engine flywheel housing according to claim 4, characterized in that, A threaded rod (55) is rotatably mounted on the support frame (51), a guide rod (56) is fixedly mounted on the support frame (51), a moving block (521) is fixedly connected to the receiving frame (52), the inside of the moving block (521) is threadedly connected to the surface of the threaded rod (55), and the inside of the moving block (521) is slidably connected to the surface of the guide rod (56), the top end of the threaded rod (55) passes through the top of the support frame (51) and extends upward, and a rotating handle (57) is fixedly connected to the top end of the threaded rod (55).

6. The coaxiality gauge for an engine flywheel housing according to claim 1, characterized in that, The base (1) has an installation groove (11) on its top, and a guide rod (12) is fixedly installed in the installation groove (11). Multiple guide rods (12) are provided. A guide plate (31) is fixedly installed at the bottom of the second V-shaped frame (3). The guide plate (31) is slidably installed on the surface of the guide rod (12).

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