Generator rear end cover detection tool

Abstract

A generator rear end cover detection tool disclosed by the present invention comprises a workbench, a fixed rod and a top plate, one end of the fixed rod is vertically fixed on the workbench, the other end of the fixed rod is fixed on the top plate parallel to the workbench, and a rotary positioning mechanism is fixed on the upper end surface of the workbench. And a rear cover body is placed on the rotary positioning mechanism. According to the detection tool for the rear end cover of the generator, a linked air tightness detection structure is adopted, the detection effect can be achieved through gas pressurization after the rear cover is sealed, whether small cracks exist in the rear cover or not can be determined through air tightness detection of the rear cover, and compared with traditional manual detection, the detection efficiency can be greatly improved; the appearance of the rear cover can be comprehensively detected in cooperation with the rotary appearance detection mechanism, the production quality of the rear cover is ensured, the device is compact in structure, multiple kinds of detection can be synchronously conducted on the rear cover, and therefore the detection procedures are reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of generator rear end cover detection, in particular to a generator rear end cover detection tool. Background Art

[0002] Generators are mechanical equipment that convert other forms of energy into electrical energy. They are widely used in industrial and agricultural production, national defense, science and technology, and daily life. The rear end cover of the generator is an important part of the generator. It not only fixes and protects the key components inside the generator, but also ensures the normal operation and safety of the generator through its structural design.

[0003] After the production of the rear end cover of the generator is completed, in order to ensure the production quality of the rear end cover of the generator, it is necessary to inspect the rear end cover of the generator. The traditional inspection method is to observe whether there are obvious cracks on its surface with the naked eye. This manual direct observation method is inefficient, and some small cracks are not easy to find, and it is difficult to ensure the inspection quality. Therefore, in response to the above problems, a generator rear end cover inspection tooling is designed to better meet the actual use needs. Summary of the invention

[0004] The object of the present invention is to provide a generator rear end cover detection tool to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a generator rear end cover detection tool, comprising a workbench, a fixed rod and a top plate, one end of the fixed rod is vertically fixed on the workbench, the other end of the fixed rod is fixed on the top plate parallel to the workbench, a rotation positioning mechanism is fixed on the upper end surface of the workbench, a rear cover body is placed on the rotation positioning mechanism, a hydraulic rod is vertically fixed on the lower end surface of the top plate, a movable plate is fixed on the output end of the hydraulic rod, an upper sealing member is arranged on the lower side of the movable plate, an airtightness detection mechanism is installed on the upper sealing member, the airtightness detection mechanism comprises a cylinder, an air outlet, a piston, a lower circular plate, an upper circular plate, a pressure ring, a vertical rod and a pressure sensor, the cylinder is fixed on the upper sealing member, and a The air outlet is a piston slidably connected to the cylinder, a lower circular plate and an upper circular plate are fixed on the piston, a pressure ring is slidably connected to the piston, the pressure ring contacts the lower circular plate or the upper circular plate to achieve positioning, the pressure ring is connected to the upper seal through a vertical rod, and the length of the vertical rod is greater than the distance between the lower circular plate and the upper circular plate, the pressure sensor is installed on the upper seal, and the movable plate, the upper seal and the airtightness detection mechanism are driven downward by the extension of the hydraulic rod. When the upper seal contacts the rear cover body to achieve sealing, the movable plate moves relative to the upper seal, and the pressure ring slides toward the upper circular plate. When the pressure ring contacts the upper circular plate to generate pressure, the piston slides in the cylinder, thereby allowing the air in the cylinder to enter the rear cover body, and the rear cover body is detected in cooperation with the pressure sensor.

[0006] Preferably, a visual inspection camera is fixed on the workbench, and the visual inspection camera and the display are electrically connected, and the display is fixed on the workbench. Through the action of the visual inspection camera, the appearance inspection of the back cover body can be achieved, thereby ensuring the production quality of the back cover body.

[0007] Preferably, the rotation positioning mechanism includes a support plate, a magnet, a lower seal, a gear, a convex gear rod, a fixed block, a rotating rod and a connecting rod. The support plate bearing is connected to the workbench, and a magnet is installed in the circular hole on the support plate, and the magnet and the lower seal are magnetically connected, and the lower seal and the support plate are nested. The lower seal and the back cover body are nested to achieve sealing. The nesting effect between the lower seal and the support plate and the magnetic effect between the magnet and the lower seal can facilitate the disassembly and assembly of the lower seal, so that the lower seal with different structural designs of the back cover body can be installed, effectively ensuring the sealing of the lower seal and the back cover body after nesting.

[0008] Preferably, a gear is fixed on the lower side of the support plate, and the gear and the convex tooth rod are meshingly connected. Through the meshing transmission action between the gear and the convex tooth rod, a basic force can be provided for the rotation of the support plate, thereby realizing the rotation of the rear cover body, and further providing a basic guarantee for the comprehensive inspection of the appearance of the rear cover body.

[0009] Preferably, the convex gear rod and the fixed block are slidably connected, and the fixed block is fixed on the workbench. When the convex gear rod is forced to move, the stability of the movement of the convex gear rod can be ensured by the sliding guiding effect between the convex gear rod and the fixed block.

[0010] Preferably, one end of the rotating rod is rotatably connected to the convex tooth rod, and the other end of the rotating rod is rotatably connected to the connecting rod, and the connecting rod is fixed on the upper sealing member, and at the same time, the length of the rotating rod is less than the distance between the left end of the convex tooth rod and the fixed block. When the connecting rod moves downward, the transmission action of the rotating rod can provide a basic force for the movement of the convex tooth rod, thereby ensuring the normal operation of the device, and by limiting the length of the rotating rod, motion interference can be avoided.

[0011] Preferably, the movable plate is slidably connected to the fixed rod, and the fixed rod is symmetrically distributed about the center line of the movable plate. When the movable plate is moved under force, the sliding guiding effect between the movable plate and the fixed rod can ensure the stability of the movement of the movable plate.

[0012] Preferably, the diameter of the upper seal is larger than the outer diameter of the rear cover body, and the upper seal can achieve sealing effect by contacting with the rear cover body. By limiting the diameter of the upper seal, the sealing effect of the upper seal on the rear cover body can be guaranteed.

[0013] Preferably, a slide rod is fixed symmetrically on the upper end surface of the upper seal, and a sliding connection spring is provided between the slide rod and the movable plate. When the upper seal moves relative to the movable plate, the sliding guide effect between the slide rod and the movable plate can ensure that the upper seal performs stable linear motion.

[0014] Preferably, one end of a spring is fixed to the upper end surface of the upper seal, and the other end of the spring is fixed to the movable plate. When the upper seal is not subjected to external force, the elastic action of the spring can provide a basic force for automatic reset of the upper seal.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the generator rear end cover detection tool adopts a linked airtightness detection structure, which can realize the detection function by gas pressurization after the rear cover is sealed. The airtightness detection of the rear cover can determine whether there are small cracks in the rear cover. Compared with the traditional manual detection, the detection efficiency can be greatly improved. In combination with the rotary appearance detection mechanism, the appearance of the rear cover can be comprehensively detected to ensure the production quality of the rear cover. In addition, the device has a compact structure and can simultaneously perform multiple detections on the rear cover, thereby reducing the detection process and improving the detection efficiency. The specific contents are as follows:

[0016] 1. The generator rear end cover inspection tooling, during the use of the device, is driven by the hydraulic rod to move the movable plate and the upper seal downward, thereby driving the connecting rod to move, and in conjunction with the transmission action of the rotating rod and the transmission action between the convex tooth rod and the gear, the support plate can drive the lower seal and the rear cover body to rotate. Through the rotation of the rear cover body and the action of the visual inspection camera, a comprehensive inspection of the appearance of the rear cover body can be achieved;

[0017] 2. The generator rear end cover detection tooling can achieve the sealing effect of the upper and lower openings of the rear cover body through the action of the lower seal and the upper seal during the detection process. Then, with the action of the pressure ring, the upper round plate and the piston, the air in the cylinder can be sent into the sealed space composed of the lower seal, the rear cover body and the upper seal, thereby increasing the air pressure in the sealed space. The pressure sensor can be used to monitor the air pressure. By observing the changes in the air pressure in the sealed space, it can be determined whether the rear cover body is leaking, thereby determining whether there are cracks on the rear cover body, thereby achieving rapid detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention when viewed from above;

[0020] Figure 3It is a schematic diagram of an exploded three-dimensional structure of the rotary positioning mechanism and the rear cover body of the present invention;

[0021] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the rotation positioning mechanism and the rear cover body of the present invention;

[0022] Figure 5 It is a bottom-up stereoscopic structural diagram of the rotary positioning mechanism and the rear cover body of the present invention;

[0023] Figure 6 It is a bottom-up three-dimensional structural schematic diagram of the upper sealing member and the airtightness detection mechanism of the present invention;

[0024] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the upper sealing member and the airtightness detection mechanism of the present invention.

[0025] In the figure: 1. workbench; 101. visual inspection camera; 102. display; 2. fixed rod; 3. top plate; 4. rotation positioning mechanism; 401. support plate; 402. magnet; 403. lower seal; 404. gear; 405. convex tooth rod; 406. fixed block; 407. rotating rod; 408. connecting rod; 5. rear cover body; 6. hydraulic rod; 7. movable plate; 8. upper seal; 801. sliding rod; 802. spring; 9. air tightness detection mechanism; 901. cylinder; 902. air outlet; 903. piston; 904. lower circular plate; 905. upper circular plate; 906. pressure ring; 907. vertical rod; 908. pressure sensor. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0027] See also Figure 1-Figure 7 The present invention provides a technical solution: a generator rear end cover detection tooling, comprising a workbench 1, a fixing rod 2 and a top plate 3, one end of the fixing rod 2 is vertically fixed on the workbench 1, the other end of the fixing rod 2 is fixed on the top plate 3 parallel to the workbench 1, a rotation positioning mechanism 4 is fixed on the upper end surface of the workbench 1, a rear cover body 5 is placed on the rotation positioning mechanism 4, a hydraulic rod 6 is vertically fixed on the lower end surface of the top plate 3, a movable plate 7 is fixed at the output end of the hydraulic rod 6, an upper sealing member 8 is arranged on the lower side of the movable plate 7, and an airtightness detection mechanism 9 is installed on the upper sealing member 8.

[0028] A visual inspection camera 101 is fixed on the workbench 1, and the visual inspection camera 101 is electrically connected to the display 102, and the display 102 is fixed on the workbench 1; the rotation positioning mechanism 4 includes a support plate 401, a magnet 402, a lower seal 403, a gear 404, a convex gear rod 405, a fixed block 406, a rotating rod 407 and a connecting rod 408, the support plate 401 is connected to the workbench 1 by a bearing, and a magnet 402 is installed in a circular hole on the support plate 401, and the magnet 402 and the lower seal 403 are magnetically connected, and the lower seal 403 and the support plate 401 are connected by a magnetic attraction. The lower seal 403 and the rear cover body 5 are nested and connected, and the sealing effect is achieved; a gear 404 is fixed to the lower side of the support plate 401, and the gear 404 and the convex gear rod 405 are meshed; the convex gear rod 405 and the fixed block 406 are slidably connected, and the fixed block 406 is fixed on the workbench 1; one end of a rotating rod 407 is rotatably connected to the convex gear rod 405, and the other end of the rotating rod 407 is rotatably connected to a connecting rod 408, and the connecting rod 408 is fixed to the upper seal 8, and the length of the rotating rod 407 is less than the distance between the left end of the convex gear rod 405 and the fixed block 406;

[0029] When using the generator rear end cover detection tooling, if Figure 1-Figure 7 As shown, firstly, according to the structure of the rear cover body 5 to be detected, a suitable lower seal 403 is selected for installation. When installing the lower seal 403, the lower seal 403 can be positioned by nesting with the support plate 401, and the magnetic attraction between the magnet 402 and the lower seal 403 can ensure the stability of the installation of the lower seal 403. After the installation of the lower seal 403 is completed, the lower end surface of the rear cover body 5 can be sealed by nesting the lower seal 403 with the rear cover body 5. After the installation of the rear cover body 5 is completed, the movable plate 7 and the upper seal 8 can be driven to move downward by controlling the extension of the hydraulic rod 6. When the upper seal 8 moves downward, the connecting rod 408 is synchronously driven. Moving downward, with the transmission effect of the rotating rod 407, the convex tooth rod 405 can be forced to move to the left, and with the sliding guiding effect between the convex tooth rod 405 and the fixed block 406, the convex tooth rod 405 can be guaranteed to make stable linear motion, and when the convex tooth rod 405 moves, with the meshing transmission effect between the convex tooth rod 405 and the gear 404, the support plate 401, the lower seal 403 and the rear cover body 5 can be forced to rotate, and with the effect of the visual inspection camera 101, the appearance inspection of the rear cover body 5 can be realized, and when the support plate 401, the lower seal 403 and the rear cover body 5 rotate for one circle, the upper seal 8 is not in contact with the upper end surface of the rear cover body 5, thereby ensuring the comprehensiveness of the appearance inspection of the rear cover body 5;

[0030] The airtightness detection mechanism 9 includes a cylinder 901, an air outlet 902, a piston 903, a lower circular plate 904, an upper circular plate 905, a pressure ring 906, a vertical rod 907 and a pressure sensor 908. The cylinder 901 is fixed on the upper sealing member 8. The air outlet 902 is fixed at the lower end of the cylinder 901. The cylinder 901 is slidably connected with the piston 903. The lower circular plate 904 and the upper circular plate 905 are fixed on the piston 903. The pressure ring 906 is slidably connected with the piston 903. The pressure ring 906 contacts with the lower circular plate 904 or the upper circular plate 905 to achieve positioning. The pressure ring 906 is connected to the upper sealing member 8 through the vertical rod 907, and the length of the vertical rod 907 is greater than the distance between the lower circular plate 904 and the upper circular plate 905. The pressure sensor 908 is installed on the upper sealing member 8. The movable plate 7, the upper sealing member 8 and the airtightness detection mechanism 9 are driven downward by the extension of the hydraulic rod 6. When the upper sealing member 8 is in contact with the rear When the cover body 5 contacts to achieve sealing, the movable plate 7 moves relative to the upper sealing member 8, and the pressure ring 906 slides in the direction of the upper circular plate 905. When the pressure ring 906 contacts the upper circular plate 905 to generate pressure, the piston 903 slides in the cylinder 901, so that the air in the cylinder 901 enters the rear cover body 5, and the pressure sensor 908 is used to detect the rear cover body 5; the movable plate 7 and the fixed rod 2 are slidably connected, and the fixed rod 2 is symmetrically distributed about the center line of the movable plate 7; the diameter of the upper sealing member 8 is larger than the outer diameter of the rear cover body 5, and the upper sealing member 8 contacts the rear cover body 5 to achieve sealing; the upper end surface of the upper sealing member 8 is also symmetrically fixed with a sliding rod 801, and a sliding connection spring 802 is provided between the sliding rod 801 and the movable plate 7; one end of the spring 802 is also fixed to the upper end surface of the upper sealing member 8, and the other end of the spring 802 is fixed to the movable plate 7;

[0031] During the testing process, Figure 1-Figure 7As shown, when the hydraulic rod 6 extends to drive the movable plate 7 and the upper seal 8 to move downward until the upper seal 8 contacts the upper end surface of the rear cover body 5, the hydraulic rod 6 continues to extend to drive the movable plate 7 to move downward, so that the distance between the movable plate 7 and the upper seal 8 is reduced. At this time, the spring 802 is forced to contract. When the movable plate 7 continues to move downward, it synchronously drives the vertical rod 907 and the pressure ring 906 to move downward. At this time, the pressure ring 906 slides on the piston 903. When the pressure ring 906 contacts the lower circular plate 904, the spring 802 is forced to contract a distance. The elastic effect can generate pressure on the upper seal 8 to ensure the sealing effect between the upper seal 8 and the rear cover body 5. At this time, the hydraulic rod 6 continues to extend to enable the pressure ring 906 to generate pressure on the lower circular plate 904, so that the piston 903 is forced to slide downward in the cylinder 901, so that the air in the cylinder 901 enters the sealed space composed of the upper seal 8, the rear cover body 5 and the lower seal 403. As the piston 903 continues to move downward, the air pressure in the sealed space composed of the upper seal 8, the rear cover body 5 and the lower seal 403 increases until the lower seal 404 is sealed. The seal 403 is in contact with the cylinder 901. At this time, the spring 802 contracts to the limit position, which can avoid affecting the elastic effect of the spring 802 and causing the upper seal 8 to separate from the rear cover body 5 and cause air leakage, thereby ensuring the normal detection. When the lower seal 403 is in contact with the cylinder 901, the air pressure in the sealed space composed of the upper seal 8, the rear cover body 5 and the lower seal 403 is at the maximum value. The air pressure can be detected by the pressure sensor 908. After a period of time, the pressure sensor 908 can detect whether the air pressure in the sealed space is If there is no change, it indicates that the rear cover body 5 has good sealing and no tiny cracks on the surface, and it is a qualified product. If there is a large change, it indicates that the rear cover body 5 has poor sealing and there are tiny cracks on the surface, and it is an unqualified product. Thus, the rapid detection of the rear cover body 5 can be achieved, and after the detection is completed, the hydraulic rod 6 is contracted, and the elastic action of the spring 802 can make the device automatically reset, and the pressure ring 906 is reset and contacts with the upper circular plate 905 to facilitate the next detection. This is the working principle of the generator rear end cover detection tooling.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A generator rear end cover detection tool, comprising a workbench (1), a fixing rod (2) and a top plate (3), wherein one end of the fixing rod (2) is vertically fixed on the workbench (1), and the other end of the fixing rod (2) is fixed on the top plate (3) parallel to the workbench (1), characterized in that: A rotation positioning mechanism (4) is fixed on the upper end surface of the workbench (1), a rear cover body (5) is placed on the rotation positioning mechanism (4), a hydraulic rod (6) is vertically fixed on the lower end surface of the top plate (3), a movable plate (7) is fixed on the output end of the hydraulic rod (6), an upper sealing member (8) is arranged on the lower side of the movable plate (7), an airtightness detection mechanism (9) is installed on the upper sealing member (8), the airtightness detection mechanism (9) comprises a cylinder (901), an air outlet (902), a piston (903), a lower circular plate (904), an upper circular plate (905), a pressure ring (906), a vertical rod (907) and a pressure sensor (908), the cylinder (901) is fixed on the upper sealing member (8), the lower end of the cylinder (901) is fixed An air outlet (902) is fixedly provided, a piston (903) is slidably connected to the cylinder (901), a lower circular plate (904) and an upper circular plate (905) are fixed to the piston (903), a pressure ring (906) is slidably connected to the piston (903), the pressure ring (906) contacts the lower circular plate (904) or the upper circular plate (905) to achieve positioning, the pressure ring (906) is connected to the upper sealing member (8) through a vertical rod (907), and the length of the vertical rod (907) is greater than the distance between the lower circular plate (904) and the upper circular plate (905), the pressure sensor (908) is installed on the upper sealing member (8), and the movable plate (7), the upper sealing member (8) and the air tightness detection mechanism (9) are driven to move downward by the extension of the hydraulic rod (6).

2. A generator rear end cover detection tool according to claim 1, characterized in that: A visual inspection camera (101) is fixed on the workbench (1), and the visual inspection camera (101) is electrically connected to a display (102), and the display (102) is fixed on the workbench (1).

3. The generator rear end cover detection tool according to claim 1, characterized in that: The rotation positioning mechanism (4) comprises a support plate (401), a magnet (402), a lower seal (403), a gear (404), a convex tooth rod (405), a fixed block (406), a rotating rod (407) and a connecting rod (408); the support plate (401) is connected to the workbench (1) by a bearing, and a magnet (402) is installed in a circular hole on the support plate (401); the magnet (402) and the lower seal (403) are connected by magnetic attraction, and the lower seal (403) and the support plate (401) are connected by nesting, and the lower seal (403) and the rear cover body (5) are nested to achieve a sealing effect.

4. A generator rear end cover detection tool according to claim 3, characterized in that: A gear (404) is fixed on the lower side of the support plate (401), and the gear (404) is meshingly connected with the convex gear rod (405).

5. A generator rear end cover detection tool according to claim 4, characterized in that: The convex tooth rod (405) and the fixed block (406) are slidably connected, and the fixed block (406) is fixed on the workbench (1).

6. A generator rear end cover detection tool according to claim 3, characterized in that: The convex tooth rod (405) is rotatably connected to one end of a rotating rod (407), and the other end of the rotating rod (407) is rotatably connected to a connecting rod (408), and the connecting rod (408) is fixed on the upper sealing member (8), and the length of the rotating rod (407) is less than the distance between the left end of the convex tooth rod (405) and the fixed block (406).

7. The generator rear end cover detection tool according to claim 1, characterized in that: The movable plate (7) and the fixed rod (2) are slidably connected, and the fixed rod (2) is symmetrically distributed with respect to the center line of the movable plate (7).

8. The generator rear end cover detection tool according to claim 1, characterized in that: The diameter of the upper sealing member (8) is greater than the outer diameter of the rear cover body (5), and the upper sealing member (8) is in contact with the rear cover body (5) to achieve a sealing effect.

9. The generator rear end cover detection tool according to claim 1, characterized in that: A sliding rod (801) is also fixed symmetrically on the upper end surface of the upper sealing member (8), and a sliding connection spring (802) is provided between the sliding rod (801) and the movable plate (7).

10. The generator rear end cover detection tool according to claim 1, characterized in that: One end of a spring (802) is also fixed to the upper end surface of the upper sealing member (8), and the other end of the spring (802) is fixed to the movable plate (7).

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