Engine fan eccentricity measuring device

Abstract

The utility model relates to an engine fan eccentricity measuring device comprising a ruler; the positioning assembly comprises two positioning pieces and a driving piece, the two positioning pieces are connected to the rulers and distributed in the length direction of the rulers at intervals, the two positioning pieces are symmetrically distributed on the two sides of the zero graduation line of the rulers and can move in the length direction of the rulers, and the driving piece is used for driving the two rulers to synchronously move close to or away from each other; the ruler is suitable for being clamped on the two sides of a frame through two positioning pieces so that the ruler can be connected to the frame, and the length direction of the ruler is parallel to the Y direction of a vehicle body. The positioning block is connected to the ruler, is located between the two positioning pieces, can move in the length direction of the ruler, and comprises a positioning surface; the axis of the positioning rod is perpendicular to the length direction of the ruler, one end is connected with the positioning block, and the other end is provided with an indicating face coplanar with the positioning face. The measuring device can quickly measure the eccentricity of the center of the fan, and is simple and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile assembly, and particularly relates to an eccentric measurement device for an engine fan. Background Art

[0002] When a commercial vehicle OEM installs an engine assembly on a production line, since the front suspension of the engine generally adopts a V-shaped support structure, there will be a certain deviation between the left and right after the engine assembly is installed. The engine fan is usually arranged in front of the engine. When the installation deviation of the engine is large, the left and right clearances between the fan and the air shroud are uneven, which will affect the engine cooling performance or cause engine failures.

[0003] When actually installing the engine assembly, due to the lack of special tools, a steel straightedge is usually used for measurement. This method is inconvenient for measurement and has a large measurement error, and cannot effectively control the left and right eccentricity problems of the engine. Therefore, how to conveniently, labor-savingly and effectively measure the eccentricity of the engine fan is a technical problem that needs to be solved by those skilled in the art. Summary of the Utility Model

[0004] Based on the above description, the utility model provides an eccentric measurement device for an engine fan to conveniently, labor-savingly and effectively measure the eccentricity of the engine fan.

[0005] The technical solution for the utility model to solve the above technical problems is as follows:

[0006] The present application provides an eccentric measurement device for an engine fan, and the technical solution adopted is as follows:

[0007] An eccentric measurement device for an engine fan, comprising:

[0008] A straightedge;

[0009] A positioning assembly, which includes two positioning members and a driving member. The two positioning members are connected to the straightedge and are spaced apart along the length direction of the straightedge. The two positioning members are symmetrically distributed on both sides of the zero scale line of the straightedge. The two positioning members can move along the length direction of the straightedge. The driving member is used to drive the two positioning members to move synchronously closer to or away from each other, and is adapted to clamp on both sides of the vehicle frame through the two positioning members, so as to connect the straightedge to the vehicle frame and make the length direction of the straightedge parallel to the vehicle body Y direction;

[0010] A positioning block, which is connected to the straightedge and is located between the two positioning members. The positioning block can move along the length direction of the straightedge. The positioning block includes a positioning surface perpendicular to the length direction of the straightedge;

[0011] A positioning rod, the axis of which is perpendicular to the length direction of the straight ruler. One end of the positioning rod is connected to the positioning block, and the other end is provided with an indicating surface coplanar with the positioning surface. The end of the positioning rod with the indicating surface is used to point to the fan.

[0012] Preferably, the driving member includes a bidirectional screw, the axis of the bidirectional screw is parallel to the length direction of the straight ruler, and the two positioning members are respectively threadedly connected to the two threaded segments of the bidirectional screw.

[0013] Preferably, the positioning member includes a positioning plate, the plane of the positioning plate is perpendicular to the length direction of the straight ruler, and is adapted to be attached to the side surface of the vehicle frame longitudinal beam through the positioning plate so that the length direction of the straight ruler is parallel to the vehicle body Y direction.

[0014] Preferably, the positioning rod can rotate around the axis of the straight ruler.

[0015] Preferably, the positioning block is sleeved on the straight ruler, the positioning rod is connected with a connecting ring, the connecting ring is sleeved outside the positioning block and is coaxial with the straight ruler, and the connecting ring can rotate relative to the positioning block.

[0016] Preferably, a locking bolt is connected to the connecting ring, the locking bolt is threadedly connected with the connecting ring, and the locking bolt is used to press against the positioning block to limit the rotation of the connecting ring relative to the positioning block.

[0017] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0018] 1. By setting the positioning assembly in the present application, when in use, it is clamped on both sides of the vehicle frame through two positioning members, using the vehicle frame as a support and reference to make the straight ruler parallel to the vehicle body Y direction. At this time, the zero scale line of the straight ruler coincides with the vehicle body Y direction center; a movable positioning block is arranged on the straight ruler, the positioning surface on the positioning block is used to indicate the scale to mark its position, the positioning block is connected with a positioning rod, the indicating surface on the positioning rod is coplanar with the positioning surface, and the end of the positioning rod with the indicating surface is used to point to the fan to mark the center of the fan. Adjust the position of the positioning block on the straight ruler according to the center of the fan to align the indicating surface with the center of the fan. At this time, the scale indicated by the positioning surface on the straight ruler is the position of the fan center on the vehicle body Y direction. Comparing this scale with the zero scale, that is, comparing the position of the fan center on the vehicle body Y direction with the center of the vehicle body Y direction, so as to judge the eccentricity of the fan center. Then, adjust the position of the fan according to the eccentricity. The measuring device of the present application is simple and convenient to use and can quickly measure the eccentricity of the fan center. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an engine fan eccentricity measuring device provided by an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the connection structure between the positioning block and the positioning rod in the engine fan eccentricity measuring device provided by the embodiment of the present utility model.

[0021] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0022] 1, straight ruler; 2, positioning member; 3, positioning block; 31, positioning surface; 4, positioning rod; 41, connecting ring; 42, indicating block; 43, indicating surface; 5, bidirectional screw; 51, connecting block; 6, locking bolt. Specific embodiments

[0023] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant attached drawings. Embodiments of the present application are shown in the attached drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the attached drawing is flipped, the element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device can also include other orientations (such as rotating 90 degrees or other orientations), and the spatial description language used herein is accordingly interpreted.

[0026] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc. if there is an electrical signal or data transmission between the connected circuits, modules, units, etc.

[0027] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having" and the like specify the presence of the stated features, integers, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.

[0028] Referring to Figure 1-2 As shown, an engine fan eccentricity measuring device provided by an embodiment of the present application includes a straight ruler 1, a positioning assembly, a positioning block 3 and a positioning rod 4. The positioning assembly includes two positioning members 2 and a driving member. The two positioning members 2 are connected to the straight ruler 1 and are spaced apart along the length direction of the straight ruler 1. The two positioning members 2 are symmetrically distributed on both sides of the zero scale line of the straight ruler 1. The two positioning members 2 can move along the length direction of the straight ruler 1. The driving member is used to drive the two positioning members 2 to move synchronously closer to or away from each other, and is adapted to clamp on both sides of the vehicle frame through the two positioning members 2, so as to connect the straight ruler 1 to the vehicle frame and make the length direction of the straight ruler 1 parallel to the vehicle body Y direction; the positioning block 3 is connected to the straight ruler 1 and is located between the two positioning members 2. The positioning block 3 can move along the length direction of the straight ruler 1. The positioning block 3 includes a positioning surface 31 perpendicular to the length direction of the straight ruler 1; the axis of the positioning rod 4 is perpendicular to the length direction of the straight ruler 1. One end of the positioning rod 4 is connected to the positioning block 3, and the other end is provided with an indicating surface 43 coplanar with the positioning surface 31. The end of the positioning rod 4 provided with the indicating surface 43 is used to point to the fan.

[0029] With the above settings, when in use, the two positioning members 2 clamp on both sides of the vehicle frame. Taking the vehicle frame as a support and reference, the straight ruler 1 is parallel to the vehicle body Y direction. At this time, the zero scale line of the straight ruler 1 coincides with the Y-direction center on the vehicle; a movable positioning block 3 is arranged on the straight ruler 1. The positioning surface 31 on the positioning block 3 is used to indicate the scale to mark its position. The positioning block 3 is connected with a positioning rod 4. The indicating surface 43 on the positioning rod 4 is coplanar with the positioning surface 31. The end of the positioning rod 4 provided with the indicating surface 43 is used to point to the fan to mark the fan center. Adjust the position of the positioning block 3 on the straight ruler 1 according to the fan center so that the indicating surface 43 is aligned with the fan center. At this time, the scale indicated by the positioning surface 31 on the straight ruler 1 is the position of the fan center on the vehicle body Y direction. This scale is compared with the zero scale, that is, the position of the fan center on the vehicle body Y direction is compared with the center of the vehicle body Y direction, so as to judge the fan center eccentricity amount. Then, the fan position can be adjusted according to the eccentricity amount.

[0030] Referring to Figure 1-2As shown, when clamping the vehicle frame by two positioning members 2, to ensure that the length direction of the straight ruler 1 is parallel to the vehicle body Y direction, the positioning member 2 is set as a positioning plate, and the plane of the positioning plate is perpendicular to the length direction of the straight ruler 1, and is suitable for making the length direction of the straight ruler 1 parallel to the vehicle body Y direction by fitting the positioning plate to the side surface of the vehicle frame longitudinal beam. When clamping the vehicle frame by two positioning plates, taking the side surface of the vehicle frame longitudinal beam perpendicular to the vehicle body Y direction as the reference surface, and making the length direction of the straight ruler 1 parallel to the vehicle body Y direction by fitting the positioning plate to this side surface, so as to accurately measure the eccentricity of the fan center in the vehicle body Y direction through the straight ruler 1.

[0031] Referring to Figure 1 As shown, further, the driving member includes a bidirectional screw rod 5, whose axis is parallel to the length direction of the straight ruler 1, and the two positioning members 2 are respectively threadedly connected to the two threaded sections of the bidirectional screw rod 5. Specifically, to limit the relative axial movement between the bidirectional screw rod 5 and the straight ruler 1, both ends of the bidirectional screw rod 5 are respectively connected to the straight ruler 1 through connection blocks 51. The connection blocks 51 are fixed to the straight ruler 1, while the bidirectional screw rod 5 is rotatably connected to the connection blocks 51. In this way, when the bidirectional screw rod 5 does not rotate, the relative position between the positioning plate and the straight ruler 1 remains fixed, thereby ensuring that the distances between the two positioning plates and the zero scale of the straight ruler 1 are equal.

[0032] Referring to Figure 1-2 As shown, further, to facilitate the positioning rod 4 to indicate the fan center, the positioning rod 4 is set to be rotatable around the axis of the straight ruler 1, so that the positioning rod 4 can be rotated to make one end of its indicating surface 43 point to the fan center. Specifically, the positioning block 3 is set to be sleeved on the straight ruler 1. The positioning rod 4 is connected with a connecting ring 41. The connecting ring 41 is sleeved outside the positioning block 3 and is coaxial with the straight ruler 1. The connecting ring 41 can rotate relative to the positioning block 3. Among them, the positioning block 3 is set to be cylindrical. One end surface of the positioning block 3 is a positioning surface 31. A limiting groove is circumferentially formed on the outer side wall of the positioning block 3. The connecting ring 41 is embedded in the limiting groove to limit the relative axial movement between the connecting ring 41 and the positioning block 3.

[0033] Further, the positioning rod 4 is set to be cylindrical, and an indicating block 42 is connected to the end away from the positioning block 3. One side surface of the indicating block 42 is set as an indicating surface 43 coplanar with the positioning surface 31.

[0034] Referring to Figure 1-2 As shown, further, a locking bolt 6 is connected to the connecting ring 41. The locking bolt 6 is threadedly connected to the connecting ring 41. The locking bolt 6 is used to press against the positioning block 3 to limit the rotation of the connecting ring 41 relative to the positioning block 3. By setting the locking bolt 6, after rotating the positioning rod 4 to make it point to the fan center, the connecting ring 41 is locked by the locking bolt 6 so that the positioning rod 4 maintains the state of pointing to the fan center, thus facilitating the observation of the alignment state between the indicating surface 43 and the fan center.

[0035] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An engine fan eccentricity measuring device, characterized in that: include: Ruler (1); A positioning assembly, comprising two positioning members (2) and a driving member, wherein the two positioning members (2) are connected to the ruler (1) and are spaced apart along the length direction of the ruler (1), the two positioning members (2) are symmetrically distributed on both sides of the zero scale line of the ruler (1), the two positioning members (2) can move along the length direction of the ruler (1), and the driving member is used to drive the two positioning members (2) to move synchronously toward or away from each other, and is suitable for being clamped on both sides of a vehicle frame by the two positioning members (2) so as to connect the ruler (1) to the vehicle frame and make the length direction of the ruler (1) parallel to the Y direction of the vehicle body; a positioning block (3) connected to the ruler (1) and located between the two positioning members (2); the positioning block (3) can move along the length direction of the ruler (1); the positioning block (3) comprises a positioning surface (31) perpendicular to the length direction of the ruler (1); A positioning rod (4) has an axis perpendicular to the length direction of the ruler (1); one end of the positioning rod (4) is connected to the positioning block (3); the other end is provided with an indicating surface (43) coplanar with the positioning surface (31); and the end of the positioning rod (4) provided with the indicating surface (43) is used to point toward the fan.

2. The engine fan eccentricity measuring device according to claim 1, characterized in that: The driving member comprises a bidirectional screw (5), the axis of the bidirectional screw (5) is parallel to the length direction of the ruler (1), and the two positioning members (2) are respectively threadedly connected to the two threaded sections of the bidirectional screw (5).

3. The engine fan eccentricity measuring device according to claim 1, characterized in that: The positioning member (2) comprises a positioning plate, the plane of the positioning plate is perpendicular to the length direction of the ruler (1), and is suitable for fitting the side surface of the frame longitudinal beam through the positioning plate so that the length direction of the ruler (1) is parallel to the Y direction of the vehicle body.

4. The engine fan eccentricity measuring device according to claim 1, characterized in that: The positioning rod (4) can rotate around the axis of the ruler (1).

5. The engine fan eccentricity measuring device according to claim 4, characterized in that: The positioning block (3) is sleeved on the ruler (1); the positioning rod (4) is connected to a connecting ring (41); the connecting ring (41) is arranged outside the positioning block (3) and is coaxial with the ruler (1); the connecting ring (41) can rotate relative to the positioning block (3).

6. The engine fan eccentricity measuring device according to claim 5, characterized in that: A locking bolt (6) is connected to the connecting ring (41), and the locking bolt (6) is threadedly connected to the connecting ring (41). The locking bolt (6) is used to tighten the positioning block (3) to limit the rotation of the connecting ring (41) relative to the positioning block (3).

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