A tool and method for solid rocket engine bolt positioning detection

Abstract

The application discloses a tool and method for solid engine bolt positioning detection, and relates to the field of solid engine detection, and comprises a detection block, a flexible connecting plate and a bolt detection tool; the flexible connecting plate is used for bending along the length direction thereof; a plurality of detection blocks are arranged, and the number of the detection blocks is the same as the number of bolts of a solid engine to be detected; along the length direction of the flexible connecting plate, the plurality of detection blocks are sequentially connected to the same side of the flexible connecting plate, and the side, away from the flexible connecting plate, of the detection block is connected with the bolt detection tool; the bolt detection tool is provided with a measuring hole, and the measuring hole is used for being sleeved on the outside of a solid engine bolt, so as to position the position of the solid engine bolt and determine the specification of the bolt. The assembly position of the bolt can be detected. The dependence on artificial inspection is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of solid engine detection, in particular to a tool for solid engine bolt positioning detection, which guarantees the assembly quality of products. BACKGROUND

[0002] The combustion chamber and the nozzle of a certain type of engine are flange-connected, and three different types of bolts, namely flat head bolts, double head bolts and positioning bolts, are needed in the connecting process. The number and positions of the three types of bolts used in assembly are inconsistent. In addition to fixing the nozzle, the three types of bolts also bear the connection and fixing work of the overall tail cabin. The correctness of the number and position of bolt assembly is related to the quality of the engine. If there is an error, the overall tail cabin cannot be assembled, resulting in a quality accident.

[0003] At present, the positioning detection of the bolts is completed by manual visual inspection, which requires personnel to move along the nozzle for inspection, and there is a shielding condition of the nozzle expansion section component. In addition, manual visual inspection has the problem of omission, which is easy to cause quality accidents.

[0004] The traditional manual visual inspection method has the problems of shielding of the nozzle expansion section component and omission in the inspection process, which is easy to cause quality accidents. SUMMARY

[0005] The application solves the technical problems of overcoming the deficiencies of the prior art and providing a tool for detecting the positioning of the bolts of a solid engine, which can realize the detection of the assembly position of the bolts by using the bolt positioning detection tool and solves the dependence on manual inspection.

[0006] The technical scheme provided by the application is as follows:

[0007] A tool for detecting the positioning of the bolts of a solid engine, which comprises a detection block, a flexible connecting plate and a bolt detection tool, the flexible connecting plate is used for bending along the length direction of the flexible connecting plate, a plurality of detection blocks are arranged, the number of the detection blocks is the same as the number of the bolts of the solid engine to be detected, the plurality of detection blocks are sequentially connected to the same side of the flexible connecting plate along the length direction of the flexible connecting plate, the side of the detection block away from the flexible connecting plate is connected with the bolt detection tool, the bolt detection tool is provided with a measuring hole, the measuring hole is used for being sleeved on the outside of the bolt of the solid engine to position the position of the bolt of the solid engine and determine the specification of the bolt.

[0008] The flexible connecting plate is sequentially provided with a plurality of fixing holes along the length direction of the flexible connecting plate, the side of the detection block facing the flexible connecting plate is provided with a locking bolt hole, and the locking screw passes through the fixing hole and is threadedly connected to the locking bolt hole of the detection block.

[0009] The side of the detection block facing the flexible connecting plate is provided with a flexible connecting plate groove, and the flexible connecting plate is clamped in the flexible connecting plate groove.

[0010] The surface of the detection block perpendicular to the hole axis is provided with a pressing groove, and a pressing strip is arranged in the groove.

[0011] The pressing groove includes a first pressing groove and a second pressing groove, the side of the detection block connected with the pressing strip is further provided with a pressing bolt hole, the first pressing groove and the second pressing groove are respectively located at the inner side and the outer side of the pressing bolt hole, and the curvatures of the first pressing groove and the second pressing groove are different, and the pressing strip is arranged in the first pressing groove or the second pressing groove; a flat pad is arranged outside the side of the detection block connected with the pressing strip, the pressing bolt passes through the flat pad and is threadedly connected in the pressing bolt hole of the detection block, so as to press the pressing strip in the first pressing groove or the second pressing groove through the flat pad.

[0012] One side of the detection block opposite to the flexible connecting plate groove is provided with a dovetail groove, the length direction of the dovetail groove is perpendicular to the axes of the pressing bolt hole and the locking bolt hole; the bolt detection tool includes a measuring plate and a clamping piece, the side plate is fixedly connected with the clamping piece, the measuring hole is arranged on the measuring plate, and the clamping piece is matched with the dovetail groove.

[0013] The clamping piece is in a U-shaped structure, the opening end of the U-shaped structure is bent away from each other, so that the opening end of the U-shaped structure is matched with the dovetail groove.

[0014] A method for solid engine bolt positioning detection, using any of the above-mentioned tool for solid engine bolt positioning detection for detection, comprising:

[0015] According to the specification of the bolt to be detected, the bolt detection tool corresponding to the measuring hole is determined;

[0016] Select a flexible pressing strip, assemble each part structure, and obtain a flexible annular tool with an opening;

[0017] Starting from the position of one end of the annular tool opening, the bolt detection tool is sequentially sleeved outside the solid engine bolt, so as to realize the detection of the specifications and positions of all bolts.

[0018] A method for solid engine bolt positioning detection, using any of the above-mentioned tool for solid engine bolt positioning detection for detection, comprising:

[0019] According to the specification of the bolt to be detected, the bolt detection tool corresponding to the measuring hole is determined;

[0020] If a rigid pressing strip is selected, each part structure is assembled to obtain two half-ring tools;

[0021] The two half-ring tools are sequentially sleeved outside the solid engine bolt, so as to realize the detection of the specifications and positions of all bolts.

[0022] In summary, the present application at least includes the following beneficial technical effects:

[0023] 1、Can detect the bolts not in the same position of the same circle, different specifications

[0024] The traditional manual visual detection method needs to distinguish the position and specification of the bolt manually. The bolt positioning detection tool can replace the bolt detection tool of different specifications conveniently, and realize the detection of bolts not in the same position of the same circle, different specifications.

[0025] 2、Can be used for detection of solid rocket engine bolts of different diameters

[0026] By replacing the detection block and the pressing strip of different specifications conveniently, the bolt positioning detection tool of different circles is combined to realize the detection of solid rocket engine bolts of different diameters.

[0027] 3、Solve the problem of blocking of nozzle expansion section components

[0028] When the bolt positioning detection tool is semi-ring-shaped, it can be set on the bolt of the solid rocket engine from the side. When it is a flexible ring-shaped tool, the bolt detection tool can be set on the bolt of the solid rocket engine one by one to solve the problem of blocking of nozzle expansion section components during manual visual detection.

[0029] 4、Improve the efficiency and quality of bolt positioning detection

[0030] Manual detection method needs personnel to move along the nozzle to check, which consumes energy and may miss detection. Using the solid rocket engine bolt positioning detection tool, only needs to install the tool in place to realize the detection of all bolts. There is no omission, and the detection speed is fast and the efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is the front view of the skirt end bolt detection tool;

[0032] Figure 2 is the side view of the skirt end bolt detection tool;

[0033] Figure 3 is the structure diagram of the detection block;

[0034] Figure 4 is the structure diagram of the flexible connecting plate;

[0035] Figure 5 is the structure diagram of the rigid pressing strip;

[0036] Figure 6 is the structure diagram of the bolt detection tool;

[0037] Figure 7 is the different circle detection diagram of the bolt to be detected;

[0038] Figure 8 is the different number detection diagram of the bolt to be detected;

[0039] Figure 9 is a special requirement detection schematic diagram of a bolt to be detected.

[0040] The drawing number explanation: 1, detection block; 2, locking screw; 3, flat pad; 4, compression bolt; 5, flexible connecting plate; 6, compression strip; 7, bolt detection tool; 71, measuring plate; 711, measuring hole; 72, clamping piece;

[0041] 11, first compression groove; 12, second compression groove; 13, compression bolt hole; 14, flexible connecting plate groove; 15, locking screw hole; 16, dovetail groove. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will combine the drawings to further describe the disclosed embodiments of the present application in detail.

[0043] The embodiments of the present application disclose a tool for solid engine bolt positioning detection, as shown in Figure 1 and Figure 2 , which comprises a detection block 1, a locking screw 2, a flat pad 3, a compression bolt 4, a flexible connecting plate 5, a compression strip 6 and a bolt detection tool 7. The compression strip 6 is a flexible or rigid compression strip.

[0044] As shown in Figure 1 , Figure 2 and Figure 4 , the flexible connecting plate 5 is sequentially provided with a plurality of fixing holes along the length direction of the flexible connecting plate 5, and the flexible connecting plate 5 can be bent along the length direction of the flexible connecting plate 5; a plurality of detection blocks 1 are provided, and the number of the detection blocks 1 is the same as the number of bolts of the solid engine to be detected. The locking screw 2 is threadedly connected to the locking screw hole 15 of the detection block 1 through the fixing hole, so that the plurality of detection blocks 1 are connected to the same side of the flexible connecting plate 5 through the fixing holes, and the side of the detection block 1 away from the flexible connecting plate 5 is connected with the bolt detection tool 7, and the bolt detection tool 7 is provided with a measuring hole, which is used for sleeving the outside of the solid engine bolt, so as to position the position of the solid engine bolt.

[0045] As shown in Figure 3 , the side surface of the detection block 1 facing the flexible connecting plate 5 is provided with a flexible connecting plate groove 14, and the flexible connecting plate 5 is clamped in the flexible connecting plate groove 14 of each detection block 1.

[0046] The surface of the detection block 1 perpendicular to the hole axis is connected with the pressing strip 6. The side surface of the detection block 1 connected with the pressing strip 6 is provided with a pressing bolt hole 13, a first pressing groove 11 and a second pressing groove 12. The first pressing groove 11 and the second pressing groove 12 are respectively located at the inner side and the outer side of the pressing bolt hole 13, and the curvatures of the first pressing groove 11 and the second pressing groove 12 are different. During installation, according to the diameter of the solid engine, the pressing strip 6 is installed in the first pressing groove 11 or the second pressing groove 12. After the pressing strip 6 is installed in the first pressing groove 11 or the second pressing groove 12, the flat pad 3 is abutted against the outer side of the pressing strip 6, then the pressing bolt 4 is screwed into the pressing bolt hole 13 of the detection block 1 through the flat pad 3, until the pressing bolt 4 presses the flat pad 3, at this time, the flat pad 3 presses the pressing strip 6 in the first pressing groove 11 or the second pressing groove 12.

[0047] As shown in Figure 5 When the pressing strip 6 is flexible, since the pressing strip 6 and the flexible connecting plate 5 are both flexible, the tooling formed has flexibility, but since the pressing strip 6 and the flexible connecting plate 5 are connected to different surfaces of the detection block 1 respectively, the pressing strip 6 and the flexible connecting plate 5 cooperate to correct and improve the roundness of the tooling to a certain extent.

[0048] When the pressing strip 6 is rigid, the pressing strip 6 is used for guiding the detection block 1, so that the detection block 1 is arranged along a more accurate circle, and the roundness of the tooling is higher. However, when the rigid pressing strip 6 is used, the tooling formed needs to be two semicircular toolings, and the semicircular tooling is held from the outside of the solid engine to detect the bolt, which is used for detecting the bolt of a smaller solid engine.

[0049] One side of the detection block 1 opposite to the flexible connecting plate groove 14 is provided with a dovetail groove 16, and the length direction of the dovetail groove 16 is perpendicular to the axes of the pressing bolt hole 13 and the locking bolt hole 15. Through the structure, the bolt detection tool 7 with different diameter holes can be replaced conveniently.

[0050] As shown in Figure 6 The bolt detection tool 7 includes a measuring plate 71 and a clamping piece 72. The side plate is fixedly connected with the clamping piece, and a measuring hole 711 is formed in the measuring plate 71. The clamping piece is in a U-shaped structure, and the opening end of the U-shaped structure is bent away from each other, so as to cooperate with the dovetail groove 16.

[0051] The bolt detection tool 7 is used for detecting the position of the bolt, and the tail part adopts a buckle structure, which can ensure good positioning under the support of high-toughness material. The buckle structure also has the characteristics of convenient replacement.

[0052] The flexible connecting plate 5 is used for connecting the detection block 1, and the hole position of the flexible connecting plate 5 can be used for positioning the detection block 1. When the detection block 1 is installed, different numbers of holes can be installed according to actual requirements. The flexible connecting plate 5 can be connected through the fixing holes at will, so that the specifications of the tooling can be adjusted through the connection of the flexible connecting plate 5 for various models of solid engines.

[0053] The bolt positioning detection is performed using the jig, and includes:

[0054] As shown in Figure 7 and Figure 8 , according to the specification of the bolt to be detected, the bolt gauge 7 corresponding to the measuring hole is determined;

[0055] A flexible pressing strip 6 is selected, and the structures are assembled to obtain a flexible annular jig with an opening;

[0056] The bolt gauge 7 is sequentially sleeved outside the solid transmitter bolt from the position of one end of the opening of the annular jig, so as to realize the detection of the specifications and positions of all bolts. If all the bolts are just inserted into the measuring hole, the specifications and positions of the bolts are correct. If the bolts cannot be inserted into the measuring hole, the specifications of the bolts are too large or the positions of the bolts are too large. If the diameter of the bolt is too large, the specifications of the bolt are incorrect.

[0057] As shown in Figure 9 , on the basis of the above steps, a rigid pressing strip 6 can be selected, two flexible connecting plates 5 are arranged, and the structures are assembled to obtain two semi-annular jigs;

[0058] The two semi-annular jigs are manually sleeved outside the solid transmitter bolt, so as to realize the detection of the specifications and positions of all bolts.

[0059] The contents not described in detail in the specification of the present application are the known technologies of those skilled in the art.

[0060] The present application is described in detail above in combination with the specific implementation manners and exemplary examples, but these descriptions cannot be understood as limitations of the present application. Those skilled in the art understand that the technical solutions and implementation manners of the present application can be variously replaced, modified or improved without departing from the spirit and scope of the present application, and these all fall within the scope of the present application. The protection scope of the present application is subject to the appended claims.

Claims

1. A tooling for detecting the positioning of bolts in a solid rocket motor, characterized in that: It includes a test block (1), a flexible connecting plate (5), and a bolt gauge (7); the flexible connecting plate (5) is used to bend along its own length direction; multiple test blocks (1) are provided, and the number of test blocks (1) is the same as the number of bolts of the solid rocket motor to be tested; along the length direction of the flexible connecting plate (5), multiple test blocks (1) are connected to the same side of the flexible connecting plate (5) in sequence, and the side of the test block (1) away from the flexible connecting plate (5) is connected to the bolt gauge (7), and the bolt gauge (7) is provided with a measuring hole, which is used to be fitted on the outside of the solid rocket motor bolt to locate the position of the solid rocket motor bolt and determine the bolt specification; The test block (1) has a pressure groove on its surface perpendicular to the axis of the test hole, and a pressure strip (6) is installed in the groove. The pressure strip (6) can be flexible or rigid. The pressure groove includes a first pressure groove (11) and a second pressure groove (12). The side of the test block (1) connected to the pressure strip (6) is also provided with a clamping bolt hole (13). The first pressure groove (11) and the second pressure groove (12) are located inside and outside the clamping bolt hole (13) respectively, and the curvature of the first pressure groove (11) and the second pressure groove (12) is different. The pressure strip (6) is set in the first pressure groove (11) or the second pressure groove (12). A flat washer (3) is provided on the side of the test block (1) connected to the pressure strip (6). The clamping bolt (4) passes through the flat washer (3) and is threaded into the clamping bolt hole (13) of the test block (1) so as to press the pressure strip (6) into the first pressure groove (11) or the second pressure groove (12) through the flat washer (3). The inspection block (1) has a dovetail groove (16) on one side opposite to the flexible connecting plate groove (14). The length direction of the dovetail groove (16) is perpendicular to the axis of the clamping bolt hole (13) and the locking bolt hole (15). The bolt inspection tool (7) includes a measuring plate and a clamp. The side plate is fixedly connected to the clamp. The measuring hole is opened on the measuring plate. The clamp cooperates with the dovetail groove (16).

2. The tooling for positioning and detecting bolts in a solid rocket motor according to claim 1, characterized in that: The flexible connecting plate (5) has a plurality of fixing holes sequentially along its length direction. The inspection block (1) has a locking bolt hole (15) on the side facing the flexible connecting plate (5). The locking screw (2) passes through the fixing hole and is threaded into the locking bolt hole (15) of the inspection block (1).

3. The tooling for positioning and detecting bolts in a solid rocket motor according to claim 1, characterized in that: The inspection block (1) has a flexible connecting plate groove (14) on the side facing the flexible connecting plate (5), and the flexible connecting plate (5) is engaged in the flexible connecting plate groove (14).

4. The tooling for positioning and detecting bolts in a solid rocket motor according to claim 1, characterized in that: The card is a U-shaped structure, with the open ends of the U-shaped structure bent in opposite directions so that the open ends of the U-shaped structure fit into the dovetail groove (16).

5. A method for detecting the positioning of bolts in a solid propellant engine, characterized in that, The inspection is performed using a tooling for solid rocket motor bolt positioning inspection as described in any one of claims 1-4, including: Based on the specifications of the bolt to be inspected, determine the bolt gauge for the corresponding test hole (7); Select a flexible pressure strip (6) to assemble the various structural parts and obtain a flexible ring tool with an opening; Starting from one end of the opening of the annular fixture, the bolt inspection tool (7) is sequentially placed on the outside of the solid feeder bolts to detect the specifications and positions of all bolts.

6. A method for detecting the positioning of bolts in a solid propellant engine, characterized in that, The inspection is performed using a tooling for solid rocket motor bolt positioning inspection as described in any one of claims 1-4, including: Based on the specifications of the bolt to be inspected, determine the bolt gauge for the corresponding test hole (7); If a rigid pressure strip (6) is selected, the various structural parts are assembled to obtain two semi-circular toolings; Two semi-circular fixtures are sequentially fitted over the solid engine bolts to detect the specifications and positions of all bolts.

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