A positioning fixture for testing a generator set

Abstract

The application discloses a positioning clamp for testing a generator set, belongs to the technical field of dynamic balance measurement testing, and is provided with a production conveying belt and a switching conveying belt. A dynamic balance testing structure is arranged below the switching conveying belt. The dynamic balance testing structure comprises a testing table. Opposite surfaces of the testing table are provided with vertical guide rails. Surfaces of the vertical guide rails are provided with horizontal plates. Positioning rotary shafts are arranged on both sides of the center of the upper surfaces of the horizontal plates. Clamping rods are fixedly connected to the surfaces of the positioning rotary shafts. The testing table is further provided with positioning plates. The positioning plates are rotated to drive the horizontal plates to move towards each other. The generator set positioning swing can be above the center of the testing table. Balance assemblies are arranged on the lower surfaces of the four corners of the testing table. The balance assemblies comprise bearing bodies. The bearing bodies are swung up and down to drive the pressure changes of positive pressure sensors and side pressure sensors. The dynamic balance of the four corners of the generator set can be tested at the same time. The continuity and stability of the dynamic balance testing work are improved. The dynamic balance testing effect is improved.

Description

Technical Field

[0001] This invention is a positioning fixture for generator set testing, belonging to the technical field of dynamic balance measurement and testing. Background Technology

[0002] The working principle of a generator set is to convert the thermal energy of fuel into mechanical energy through an engine, and then the generator converts the mechanical energy into electrical energy for output. It is mainly driven by a diesel engine. Because diesel generator sets are easy to start and are not affected by the environment or geographical location, diesel generator sets are used in various fields.

[0003] After a diesel generator set is manufactured and before it leaves the factory, it must be started and subjected to a dynamic balance test to verify its dynamic balance parameters during operation. This is to prevent excessive vibration during operation, which could affect the generator set's performance and even its service life. During testing, workers typically hoist the generator set from the production line to the testing area, use tools to position it on the test bench, and then hoist it back onto the production line after testing. This process has low continuity. Furthermore, existing dynamic balancing devices can only test the dynamic balance in one relative direction, resulting in poor dynamic balancing test results. To address these issues, some technicians in this field have developed a positioning fixture for generator set testing to overcome the problems described in the background. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a positioning fixture for generator set testing, which addresses the above-mentioned shortcomings. The present invention sets a dynamic balancing test structure in the generator set production line. The dynamic balancing test structure can automatically complete the automatic positioning and fixing of the generator set, and can also automatically complete the dynamic balancing test in the four corner directions of the generator set, thereby improving the continuity and stability of the generator set dynamic balancing test and improving the dynamic balancing test effect.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: A positioning fixture for testing generator sets includes a production conveyor belt, a transfer conveyor belt inside the production conveyor belt, and the two ends of the transfer conveyor belt connected to the production conveyor belt. Both the transfer conveyor belt and the production conveyor belt are roller conveyor belts. A dynamic balancing test structure is provided below the transfer conveyor belt. The dynamic balancing test structure includes a test platform, the transfer conveyor belt stands on the surface of the test platform, and balancing components are provided on the lower surface of the four corners of the test platform.

[0006] Furthermore, the test platform surface of the dynamic balancing test structure is provided with vertical guide rails, there are two opposing vertical guide rails, the vertical guide rails are located on both sides of the transfer conveyor belt, a horizontal plate is provided between the vertical guide rails on the same side of the transfer conveyor belt, a positioning rotating shaft is provided on both sides of the center of the upper surface of the horizontal plate, a clamp rod is fixed to the surface of the positioning rotating shaft, there are two clamp rods, and the clamp rods are perpendicular to each other, the end of the clamp rod is provided with a roller, and a lower rotating shaft is provided at the center of the lower surface of the horizontal plate.

[0007] Furthermore, the dynamic balancing test structure also includes a positioning plate, which is located between the transfer conveyor belt and the test bench. The two ends of the positioning plate are provided with unidirectional rotating shafts, which are connected to the lower rotating shaft by a connecting rod. A positioning motor is connected to the center of the positioning plate and is located inside the test bench.

[0008] Furthermore, the test platform is provided with vertical grooves on both sides of the center, and horizontal grooves are evenly distributed on one side of the vertical grooves. The vertical grooves and horizontal grooves are connected. The test platform is also provided with fixing components on both sides of the center. The fixing components include fixing cylinders. The end of the fixing cylinders is connected to a reciprocating column. The fixing cylinders and the reciprocating column are located in the vertical grooves on both sides of the center of the test platform. The end of the reciprocating column is wedge-shaped.

[0009] Furthermore, the fixing component also includes a gripper rotation shaft, which is located on the inner wall of the transverse groove of the test platform. A gripper is also fixed to the center surface of the gripper rotation shaft. The gripper is in the shape of an angle, and a gripper spring is provided between the gripper surface and the bottom of the transverse groove of the test platform.

[0010] Furthermore, the balancing component includes a support body, which is fixed to the lower surface of the four corners of the test bench, and the support body has recesses on both sides.

[0011] Furthermore, pressure balls are provided in the recesses on both sides of the receiving body, and a support body is provided below the receiving body. A positive pressure sensor is also provided on the central surface of the support body. A positive spring is connected between the positive pressure sensor and the lower surface of the receiving body. A middle block is also provided on both sides of the surface of the support body. A vertical groove is provided on one side surface of the middle block. A side pressure sensor is provided at the upper end of the vertical groove of the middle block. A side pressure plate is provided at the lower end of the vertical groove of the middle block. A side spring is connected between the side pressure sensor and the side pressure plate.

[0012] Furthermore, the side pressure plate and the pressure ball are connected by a connecting rod, and an intermediate rotating shaft is provided on the connecting rod between the side pressure plate and the pressure ball, with the intermediate rotating shaft standing on the surface of the support body.

[0013] The present invention adopts the above technical solution and has the following technical effects compared with the prior art: 1. This invention includes a production conveyor belt and a transfer conveyor belt. A dynamic balancing test structure is located below the transfer conveyor belt. The dynamic balancing test structure includes a test platform and a vertical guide rail. A horizontal plate is provided on the surface of the vertical guide rail. Positioning rotating shafts are provided on both sides of the center of the upper surface of the horizontal plate. Clamping rods are fixed to the surface of the positioning rotating shafts. There are two clamping rods, and the clamping rods are perpendicular to each other. A positioning plate is also provided on the surface of the test platform. By rotating the positioning plate, the horizontal plates move towards each other. The four right-angle ends of the generator set come into contact with the clamping rods until the clamping rods are in contact with the four right-angle ends of the generator set. At this time, the generator set is also positioned above the center of the test platform, thereby improving the continuity and stability of the dynamic balancing test.

[0014] 2. The test bench of this invention has a balancing component on the lower surface of its four corners. The balancing component includes a support body with recesses on both sides. Pressure balls are placed in the recesses on both sides of the support body. A support body is provided below the support body. A positive pressure sensor is also provided on the central surface of the support body. A positive spring is connected between the positive pressure sensor and the lower surface of the support body. A middle block is also provided on both sides of the support body. A vertical groove is provided on one side of the middle block. A side pressure sensor is provided at the upper end of the vertical groove of the middle block. A side pressure plate is provided at the lower end of the vertical groove of the middle block. A side spring is connected between the side pressure sensor and the side pressure plate. By swinging the support body up, down, left, and right, the pressure of the positive pressure sensor and the side pressure sensor changes. The dynamic balance of the four corners of the generator set can be tested simultaneously, improving the dynamic balance test effect. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale and orientation.

[0016] Figure 1 This is a top view of the structural connection of the present invention; Figure 2 This is a top view of the connection of the fixing components of the present invention; Figure 3 This is a side view schematic diagram of the connection of the dynamic balancing test structure of the present invention.

[0017] In the diagram: 1-Production conveyor belt, 2-Testing table, 3-Transfer conveyor belt, 4-Balancing component, 5-Vertical guide rail, 6-Horizontal plate, 7-Positioning rotating shaft, 8-Clamping rod, 9-Roller, 10-Fixing component, 11-Fixing cylinder, 12-Reciprocating column, 13-Clamping jaw, 14-Clamping jaw spring, 15-Clamping jaw rotating shaft, 16-Support body, 17-Intermediate block, 18-Support body, 19-Pressure ball, 20-Side spring, 21-Side pressure sensor, 22-Side pressure plate, 23-Positioning plate, 24-Intermediate rotating shaft, 25-Positive spring, 26-Positive pressure sensor, 27-Lower rotating shaft, 28-Co-rotating shaft, 29-Positioning motor. Detailed Implementation

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, a positioning fixture for generator set testing includes a production conveyor belt 1, a transfer conveyor belt 3 is provided inside the production conveyor belt 1, the two ends of the transfer conveyor belt 3 are connected to the production conveyor belt 1, both the transfer conveyor belt 3 and the production conveyor belt 1 are roller conveyor belts, a dynamic balancing test structure is provided below the transfer conveyor belt 3, the dynamic balancing test structure includes a test platform 2, and the transfer conveyor belt 3 stands on the surface of the test platform 2.

[0019] The test bench 2 is provided with vertical guide rails 5. There are two vertical guide rails 5 facing each other. The vertical guide rails 5 are located on both sides of the transfer conveyor belt 3. A horizontal plate 6 is provided on the surface between the vertical guide rails 5 on the same side of the transfer conveyor belt 3. A positioning rotating shaft 7 is provided on both sides of the center of the upper surface of the horizontal plate 6. A clamping rod 8 is fixed to the surface of the positioning rotating shaft 7. There are two clamping rods 8, and the clamping rods 8 are perpendicular to each other. A roller 9 is provided at the end of the clamping rod 8. A lower rotating shaft 27 is provided at the center of the lower surface of the horizontal plate 6.

[0020] The dynamic balancing test structure also includes a positioning plate 23, which is located between the transfer conveyor belt 3 and the test bench 2. The two ends of the positioning plate 23 are provided with co-rotating shafts 28, which are connected to the lower rotating shaft 27 by a connecting rod. A positioning motor 29 is connected to the center of the positioning plate 23. The positioning motor 29 is used for the rotation of the positioning plate 23 and is located inside the test bench 2.

[0021] When the generator set assembled on the surface of the production conveyor belt 1 is transported to the center of the transfer conveyor belt 3, the production conveyor belt 1 and the transfer conveyor belt 3 stop conveying. The positioning motor 29 drives the positioning plate 23 to rotate. The rotation of the positioning plate 23 causes the horizontal plates 6 to move towards each other. The four right-angle ends of the generator set come into contact with the clamping rods 8. The clamping rods 8 on the same side rotate relative to each other around the positioning rotation axis 7 until the clamping rods 8 are in contact with the four right-angle ends of the generator set. At this time, the generator set will also be positioned and placed above the center of the test platform 2.

[0022] The test platform 2 is also provided with vertical grooves on both sides of the center, and horizontal grooves are evenly distributed on one side of the vertical grooves. The vertical grooves and the horizontal grooves are connected. The test platform 2 is also provided with fixing components 10 on both sides of the center. The fixing components 10 include fixing cylinders 11. The end of the fixing cylinder 11 is connected to a reciprocating column 12. The fixing cylinder 11 and the reciprocating column 12 are located in the vertical grooves on both sides of the center of the test platform 2. The end of the reciprocating column 12 is wedge-shaped.

[0023] The fixing component 10 also includes a gripper rotation shaft 15, which is located on the inner wall of the transverse groove of the test platform 2. A gripper 13 is fixedly attached to the center surface of the gripper rotation shaft 15. The gripper 13 is in the shape of a corner. A gripper spring 14 is provided between the surface of the gripper 13 and the bottom of the transverse groove of the test platform 2. Normally, the gripper 13 lies horizontally in the transverse groove of the test platform 2 under the elastic action of the gripper spring 14.

[0024] When the generator set is positioned above the center of the test bench 2, the fixed cylinder 11 starts and extends, and the reciprocating column 12 passes through the lower surface of the gripper 13 in sequence, squeezing the gripper 13. The gripper 13 then rotates upward around the gripper rotation axis 15, and the upper end of the gripper 13 presses against the fixed seat surface of the generator set, firmly fixing the generator set to the surface of the transfer conveyor belt 3.

[0025] The test platform 2 has a balancing component 4 on its lower surface at each of its four corners. Since the structure and function are the same, only one example is given below. The balancing component 4 includes a support body 18, which is fixed to the lower surface at each of the four corners of the test platform 2. The support body 18 has recesses on both sides, and pressure balls 19 are provided in the recesses on both sides of the support body 18. A support body 16 is provided below the support body 18. A positive pressure sensor 26 is also provided on the center surface of the support body 16. A positive spring 25 is connected between the positive pressure sensor 26 and the lower surface of the support body 18. A middle block 17 is also provided on both sides of the surface of the support body 16. A vertical groove is provided on one side surface of the middle block 17. A side pressure sensor 21 is provided at the upper end of the vertical groove of the middle block 17. A side pressure plate 22 is provided at the lower end of the vertical groove of the middle block 17. A side spring 20 is connected between the side pressure sensor 21 and the side pressure plate 22.

[0026] The side pressure plate 22 and the pressure ball 19 are connected by a connecting rod. The connecting rod between the side pressure plate 22 and the pressure ball 19 is provided with an intermediate rotating shaft 24. The intermediate rotating shaft 24 stands on the surface of the support body 16. When the generator set is tightly fixed on the surface of the transfer conveyor belt 3 and the generator set is started, when the vibration at both ends of the generator set is large, the vertical amplitude of the support body 18 is large, and the pressure fluctuation of the positive pressure sensor 26 is large. When the pressure fluctuation of the positive pressure sensor 26 is greater than the set value, it indicates that the dynamic balance at both ends of the generator set is unqualified.

[0027] When the generator set vibrates greatly on both sides, the left and right swing amplitude of the bearing body 18 is large, which causes the pressure ball 19 in the recesses on both sides of the bearing body 18 to swing greatly. The swing of the pressure ball 19 causes the side pressure plate 22 to swing greatly around the central rotating shaft 24, resulting in large pressure fluctuations between the side pressure sensors 21. When the pressure fluctuation between the side pressure sensors 21 is greater than the set value, it indicates that the dynamic balance of the generator set on both sides is not qualified.

[0028] The description of this invention is provided for illustrative purposes and is not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A positioning fixture for testing generator sets, characterized in that: It includes a production conveyor belt (1), a transfer conveyor belt (3) is provided inside the production conveyor belt (1), the two ends of the transfer conveyor belt (3) are connected to the production conveyor belt (1), both the transfer conveyor belt (3) and the production conveyor belt (1) are roller conveyor belts, a dynamic balance test structure is provided below the transfer conveyor belt (3), the dynamic balance test structure includes a test platform (2), the transfer conveyor belt (3) stands on the surface of the test platform (2), and a balance component (4) is provided on the lower surface of the four corners of the test platform (2).

2. The positioning fixture for generator set testing as described in claim 1, characterized in that: In the dynamic balancing test structure, the test platform (2) is provided with vertical guide rails (5). There are two vertical guide rails (5) opposite each other. The vertical guide rails (5) are located on both sides of the transfer conveyor belt (3). A horizontal plate (6) is provided between the vertical guide rails (5) on the same side of the transfer conveyor belt (3). A positioning rotating shaft (7) is provided on both sides of the center of the upper surface of the horizontal plate (6). A clamping rod (8) is fixed to the surface of the positioning rotating shaft (7). There are two clamping rods (8), and the clamping rods (8) are perpendicular to each other. A roller (9) is provided at the end of the clamping rod (8). A lower rotating shaft (27) is provided at the center of the lower surface of the horizontal plate (6).

3. The positioning fixture for generator set testing as described in claim 2, characterized in that: The dynamic balancing test structure also includes a positioning plate (23), which is located between the transfer conveyor belt (3) and the test bench (2). The two ends of the positioning plate (23) are provided with a rotating shaft (28) in the same direction. The rotating shaft (28) in the same direction is connected to the lower rotating shaft (27) by a connecting rod. A positioning motor (29) is connected below the center of the positioning plate (23), and the positioning motor (29) is located inside the test bench (2).

4. The positioning fixture for generator set testing as described in claim 3, characterized in that: The test platform (2) is provided with vertical grooves on both sides of the center, and horizontal grooves are evenly distributed on one side of the vertical grooves. The vertical grooves are connected to the horizontal grooves. The test platform (2) is also provided with fixing components (10) on both sides of the center. The fixing components (10) include fixing cylinders (11). The end of the fixing cylinder (11) is connected to a reciprocating column (12). The fixing cylinder (11) and the reciprocating column (12) are located in the vertical grooves on both sides of the center of the test platform (2). The end of the reciprocating column (12) is wedge-shaped.

5. A positioning fixture for generator set testing as described in claim 4, characterized in that: The fixing component (10) also includes a gripper rotating shaft (15), which is located on the inner wall of the transverse groove of the test platform (2). A gripper (13) is also fixed to the center surface of the gripper rotating shaft (15). The gripper (13) is in the shape of a corner, and a gripper spring (14) is provided between the surface of the gripper (13) and the bottom of the transverse groove of the test platform (2).

6. The positioning fixture for generator set testing as described in claim 1, characterized in that: The balancing component (4) includes a support body (18), which is fixed to the lower surface of the four corners of the test bench (2), and the support body (18) has recesses on both sides.

7. A positioning fixture for generator set testing as described in claim 6, characterized in that: The support body (18) has a pressure ball (19) in the recess on both sides. The support body (18) has a support body (16) below it. The support body (16) also has a positive pressure sensor (26) on the center surface. A positive spring (25) is connected between the positive pressure sensor (26) and the lower surface of the support body (18). The support body (16) also has a middle block (17) on both sides. A vertical groove is provided on one side surface of the middle block (17). A side pressure sensor (21) is provided at the upper end of the vertical groove of the middle block (17). A side pressure plate (22) is provided at the lower end of the vertical groove of the middle block (17). A side spring (20) is connected between the side pressure sensor (21) and the side pressure plate (22).

8. A positioning fixture for generator set testing as described in claim 7, characterized in that: The side pressure plate (22) and the pressure ball (19) are connected by a connecting rod. The connecting rod between the side pressure plate (22) and the pressure ball (19) is provided with an intermediate rotating shaft (24), which stands on the surface of the support body (16).

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