Gauge for fan flange bolt hole detection

Abstract

The utility model discloses a gauge for fan flange bolt hole detection, and relates to the technical field of component detection. The device comprises a detection head, the top end of the detection head is fixedly provided with a handle, the bottom of the detection head is provided with a rectangular groove, the center of the interior of the detection head is provided with a cylindrical groove, the interior of the cylindrical groove is slidably connected with a lifting rod, and a first spring is fixedly connected between the top end of the lifting rod and the inner wall of the cylindrical groove. A transverse rod is fixedly installed at the bottom end of the lifting rod, baffles are fixedly installed at the left end and the right end of the transverse rod, cylinders are slidably connected to the outer side of the middle of the transverse rod in a bilateral symmetry mode, and second springs are fixedly connected between the ends, away from each other, of the cylinders on the left side and the right side and the baffles. According to the utility model, only the detection head needs to be inserted into the bolt hole in the measurement process, the operation is convenient, the detection efficiency is improved, the inclination is avoided in the measurement process, the measurement error is avoided, and the detection accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of component testing technology, specifically to a gauge for testing bolt holes on a fan flange. Background Technology

[0002] During the assembly and installation of wind turbines, a large number of flange components are used in conjunction with bolts for fixing. In order to ensure the smooth completion of on-site assembly and avoid the unnecessary transportation of parts, it is necessary to inspect the parts after they are manufactured. Among the inspections of wind turbine flanges, the inspection of bolt hole diameter is an important part. As a result, more and more gauges for inspecting bolt hole diameter have emerged.

[0003] However, the existing gauges for inspecting flange bolt holes in wind turbines still have the following defects during use:

[0004] Existing gauges for inspecting bolt holes on wind turbine flanges measure the diameter of bolt holes by using vernier calipers. This involves aligning the calipers with the edge of the bolt hole or inserting them into the hole to press against the inner wall. However, this method is cumbersome and prone to tilting during operation, which can lead to measurement errors and reduce the accuracy of the inspection. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the existing gauges for measuring bolt holes in wind turbine flanges are cumbersome to operate and prone to measurement errors, thus reducing the accuracy of the measurement. This utility model provides a gauge for measuring bolt holes in wind turbine flanges.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A gauge for inspecting bolt holes on a fan flange includes a test head. A handle is fixedly installed at the top of the test head, and a rectangular groove is formed at the bottom of the test head. A cylindrical groove is formed at the center of the interior of the test head. A lifting rod is slidably connected inside the cylindrical groove. A spring is fixedly connected between the top of the lifting rod and the inner wall of the cylindrical groove. A crossbar is fixedly installed at the bottom of the lifting rod. Baffles are fixedly installed at both ends of the crossbar. Cylindrical tubes are symmetrically slidably connected to the outer side of the middle of the crossbar. Springs are fixedly connected between the ends of the two cylindrical tubes on the left and right sides that are far apart from each other and the baffles.

[0008] Furthermore, the bottom of the detection head is conical, and the rectangular groove penetrates the left and right sidewalls of the detection head.

[0009] Further, the diameter of the cylindrical groove is greater than the width of the rectangular groove, the bottom end of the cylindrical groove is aligned with the bottom end of the rectangular groove, and the top end of the cylindrical groove extends upward to the inside of the handle, facilitating the stable up-and-down movement of the lifting rod.

[0010] Further, the cross bar is located inside the rectangular groove and is connected with the rectangular groove in a limiting sliding manner, and the cross bar penetrates the rectangular groove.

[0011] Further, the left and right cylindrical barrels are fixedly installed with conical barrels at the ends away from each other, the conical barrels are wrapped outside the cross bar, and the conical barrels are attached to the outer wall of the cross bar, and the top outer wall of the left and right sides of the cross bar is engraved with a scale line, and the diameter of the measured screw hole can be read through the cooperation of the conical barrel and the scale line.

[0012] Further, the top of the adjacent side of the left and right cylindrical barrels is rotatably connected with an upper roller, the upper roller is in extrusion contact with the left and right side walls of the detection head, so that the cylindrical barrel moves to the two sides through the interaction of the upper roller and the left and right side walls of the detection head during the up-and-down movement of the cylindrical barrel.

[0013] Further, the bottom of the left and right cylindrical barrels is rotatably connected with a lower roller, and the bottom edge of the lower roller extends downward below the bottom end of the cylindrical barrel, facilitating the movement of the cylindrical barrel to the two sides after the lower roller contacts the top end of the flange.

[0014] The beneficial effects of the present application are as follows:

[0015] The present application, through the design of the detection head, after inserting the detection head into the bolt hole, the up movement of the cross bar and the different degrees of up movement of the cross bar can push the cylindrical barrel to move outward to the two sides to different degrees, so that the diameter of the bolt hole can be reflected, and the scale line can be read, and the detection of the flange bolt hole can be completed, and only the detection head needs to be inserted into the bolt hole during the measurement process, which is convenient to operate, improves the detection efficiency, and avoids the inclination during the measurement process, avoids causing measurement error, and improves the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a three-dimensional structure schematic diagram of the present application;

[0017] Figure 2 is a sectional view of the three-dimensional structure schematic diagram of the present application;

[0018] Figure 3 is a three-dimensional structure explosion diagram of the present application;

[0019] Figure 4 is a bottom three-dimensional structure schematic diagram of the present application;

[0020] Figure 5 is a combined three-dimensional structure schematic diagram of the lifting rod and the cross rod of the utility model;

[0021] Figure 6 is a combined three-dimensional structure schematic diagram of the cross rod of the utility model.

[0022] The figure mark: 1, detection head;2, handle;3, rectangular groove;4, cylindrical groove;5, lifting rod;6, spring one;7, cross rod;71, scale line;8, baffle;9, cylindrical cylinder;91, conical cylinder;92, upper roller;93, lower roller;10, spring two. Specific implementation

[0023] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0024] A fan flange bolt hole detection gauge according to a preferred embodiment of the utility model will be described in detail as follows, as shown in the figure, Figures 1-6 A fan flange bolt hole detection gauge, including detection head 1, the top end of detection head 1 is fixedly installed with handle 2, the bottom of detection head 1 is provided with rectangular groove 3, the bottom of detection head 1 is conical, rectangular groove 3 penetrates the left and right side walls of detection head 1, the central part inside detection head 1 is provided with cylindrical groove 4, lifting rod 5 is slidably connected in the inside of cylindrical groove 4, spring one 6 is fixedly connected between the top end of lifting rod 5 and the inner wall of cylindrical groove 4, the diameter of cylindrical groove 4 is greater than the width of rectangular groove 3, the bottom end of cylindrical groove 4 is aligned with the bottom end of rectangular groove 3, the top end of cylindrical groove 4 extends upwards to the inside of handle 2, which is convenient for lifting rod 5 to move stably up and down.

[0025] The bottom end of lifting rod 5 is fixedly installed with cross rod 7, cross rod 7 is located in the inside of rectangular groove 3 and is limitingly and slidably connected with rectangular groove 3, and cross rod 7 penetrates rectangular groove 3, the left and right ends of cross rod 7 are fixedly installed with baffle 8, the outside of the middle part of cross rod 7 is symmetrically and slidably connected with cylindrical cylinder 9 on the left and right, and the ends away from each other of the left and right cylindrical cylinders 9 are fixedly connected with spring two 10 between baffle 8.

[0026] The ends away from each other of the left and right cylindrical cylinders 9 are fixedly installed with conical cylinder 91, conical cylinder 91 is wrapped outside cross rod 7, and conical cylinder 91 is attached to the outer wall of cross rod 7, the top outer wall of the left and right sides of cross rod 7 is engraved with scale line 71, through the cooperation of conical cylinder 91 and scale line 71, the diameter of the measured screw hole can be read.

[0027] The top of each adjacent side of the cylindrical cylinder 9 on both the left and right sides is connected to an upper roller 92 for limiting rotation. The upper roller 92 makes contact with the left and right side walls of the detection head 1 by pressing, so that the cylindrical cylinder 9 can move to both sides by the interaction between the upper roller 92 and the left and right side walls of the detection head 1 during the up and down movement of the cylindrical cylinder 9.

[0028] The bottom of the cylindrical tubes 9 on both sides is rotatably connected to a lower roller 93. The bottom edge of the lower roller 93 extends downward to the bottom of the cylindrical tube 9, which facilitates the movement of the cylindrical tube 9 to both sides after the lower roller 93 contacts the top of the flange.

[0029] The working principle of this utility model is as follows:

[0030] When it is necessary to test the diameter of the bolt holes of the flange, the bottom tip of the test head 1 is inserted into the bolt hole by holding the handle 2. During the insertion of the test head 1, the contact between the bottom roller 93 of the cylindrical tube 9 and the top end face of the flange causes the cylindrical tube 9 to drive the crossbar 7 and the lifting rod 5 to compress the spring 6 upward. During the upward movement of the cylindrical tube 9, the cooperation between the top roller 92 on the inner side of the cylindrical tube 9 and the inclined surfaces on the left and right sides of the test head 1 causes the compression spring 10 of the cylindrical tube 9 to move to both sides, thereby driving the conical tube 91 to move to both sides outside the crossbar 7.

[0031] When the diameter of the bolt hole is larger, the depth to which the detection head 1 can be inserted is greater. Therefore, the crossbar 7 and the lifting rod 5 move upward relative to the detection head 1 more. Consequently, the upper roller 92, in cooperation with the inclined surfaces on the left and right sides of the detection head 1, pushes the conical cylinder 91 to move more to both sides. Conversely, when the diameter of the bolt hole is smaller, the conical cylinder 91 moves less to both sides outside the crossbar 7. Therefore, by observing how much the conical cylinder 91 moves to both sides, the diameter of the bolt hole can be determined. Thus, by cooperating with the scale lines 71 on the top outer wall of the left and right sides of the crossbar 7, the diameter of the bolt hole can be read.

[0032] After the measurement is completed, the detection head 1 is pulled out directly. The lifting rod 5 will drive the crossbar 7 back to the bottom of the rectangular groove 3 under the action of the restoring force of the spring 6. The detection head 1 can be directly inserted into the bolt hole for the next measurement. Moreover, due to the conical design of the bottom of the detection head 1, combined with the symmetrical extension of the crossbar 7 on both sides, the measurement will not be tilted during the measurement process, thus improving the accuracy of the measurement.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gauge for inspecting bolt holes on a fan flange, comprising an inspection head (1), characterized in that, A handle (2) is fixedly installed at the top of the detection head (1). A rectangular groove (3) is opened at the bottom of the detection head (1). A cylindrical groove (4) is opened at the center of the inside of the detection head (1). A lifting rod (5) is slidably connected inside the cylindrical groove (4). A spring (6) is fixedly connected between the top of the lifting rod (5) and the inner wall of the cylindrical groove (4). A crossbar (7) is fixedly installed at the bottom of the lifting rod (5). Baffles (8) are fixedly installed at the left and right ends of the crossbar (7). Cylindrical cylinders (9) are symmetrically slidably connected to the outer side of the middle part of the crossbar (7). A spring (10) is fixedly connected between the ends of the cylindrical cylinders (9) on the left and right sides that are far apart from each other and the baffles (8).

2. The gauge for inspecting bolt holes on a fan flange according to claim 1, characterized in that, The bottom of the detection head (1) is conical, and the rectangular groove (3) penetrates the left and right sidewalls of the detection head (1).

3. The gauge for inspecting bolt holes on a fan flange according to claim 1, characterized in that, The diameter of the cylindrical groove (4) is greater than the width of the rectangular groove (3), the bottom end of the cylindrical groove (4) is aligned with the bottom end of the rectangular groove (3), and the top end of the cylindrical groove (4) extends upward into the interior of the handle (2).

4. The gauge for inspecting bolt holes on a fan flange according to claim 1, characterized in that, The crossbar (7) is located inside the rectangular groove (3) and is slidably connected to the rectangular groove (3), and the crossbar (7) passes through the rectangular groove (3).

5. The gauge for inspecting bolt holes on a fan flange according to claim 1, characterized in that, A conical cylinder (91) is fixedly installed at the ends of the cylindrical tubes (9) on both sides that are far apart from each other. The conical cylinder (91) wraps around the outside of the crossbar (7) and is attached to the outer wall of the crossbar (7).

6. The gauge for inspecting bolt holes on a fan flange according to claim 1, characterized in that, The top outer walls on both sides of the crossbar (7) are engraved with scale lines (71).

7. The gauge for inspecting bolt holes on a fan flange according to claim 1, characterized in that, The top of each adjacent side of the cylindrical tubes (9) on both the left and right sides is connected to an upper roller (92) for rotatable positioning. The upper roller (92) is in contact with the left and right side walls of the detection head (1).

8. The gauge for inspecting bolt holes on a fan flange according to claim 1, characterized in that, The bottom of the cylindrical tubes (9) on the left and right sides is rotatably connected to a lower roller (93), and the bottom edge of the lower roller (93) extends downward to the bottom of the cylindrical tube (9).

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