Bending resistance detection device for oil cylinder

Abstract

The utility model belongs to the oil cylinder tube detection technical field, concretely relates to an oil cylinder tube anti-bending detection equipment, this oil cylinder tube anti-bending detection equipment, including base, the upper surface fixed connection of base has support frame, the front surface fixed connection of support frame has box body, the front surface fixed connection of box body has touch -control display screen. This oil cylinder tube anti-bending detection equipment cooperates through second U -shaped board, support station, rectangle tube, first hollow block, spring, connecting block, steel wire, round hole, first cylinder, second cylinder and torus, so that the detection personnel can make the two rectangle tubes on support station move to support station center synchronously through the downward torus, and the center of oil cylinder tube can be accurately pushed to the just below of pressing head through the rectangle tube of moving, so that the overhaul personnel can quickly and accurately align the center of oil cylinder tube with pressing head, and further make the oil cylinder tube anti-bending detection equipment more convenient to use in overhaul.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinder barrel testing technology, specifically relating to a hydraulic cylinder barrel bending resistance testing device. Background Technology

[0002] In fields such as engineering machinery and hydraulic transmission, the cylinder barrel is a core load-bearing component, and its bending resistance directly affects the operational safety and service life of the equipment. Therefore, bending resistance testing of the cylinder barrel is a crucial step in the production and maintenance process.

[0003] Currently, when using hydraulic cylinder bending resistance testing equipment to test the bending resistance of hydraulic cylinders, the cylinder is typically placed on the equipment, and then a specified pressure is applied to the cylinder using a pressing head on the equipment. The bending resistance is determined by observing whether the cylinder fully compresses under the specified pressure. However, during testing, the repeated manual adjustment of the cylinder's position to align its center with the pressing head makes the process cumbersome and time-consuming. Furthermore, alignment deviations can easily lead to distorted test data, affecting the accurate assessment of the cylinder's bending resistance. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic cylinder bending resistance testing device, which solves the problem that during testing, the hydraulic cylinder position is repeatedly adjusted manually to align its center with the pressing head, resulting in a cumbersome and time-consuming testing process. Furthermore, the alignment deviation can easily lead to distorted test data, affecting the accurate judgment of the hydraulic cylinder's bending resistance performance.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A hydraulic cylinder bending resistance testing device includes a base, a support frame fixedly connected to the upper surface of the base, a housing fixedly connected to the front of the support frame, a touch screen fixedly connected to the front of the housing, a controller fixedly connected to the inner wall of the housing, a first hydraulic cylinder fixedly connected to the inner wall of the housing, a pressing head fixedly connected to the bottom of the first hydraulic cylinder, a through hole opened at the bottom of the housing, the inner wall of the through hole fitting against the surface of the pressing head, a second hydraulic cylinder fixedly connected to the upper surface of the base, a second U-shaped plate fixedly connected to the upper surface of the second hydraulic cylinder, a support platform fixedly connected to the upper surface of the second U-shaped plate, a trapezoidal groove opened on the upper surface of the support platform, a trapezoidal column fixedly connected to the inner wall of the trapezoidal groove, and a rectangular tube fitted onto the surface of the support platform. A first hollow block is fixedly connected to the bottom of the support platform. A spring is fixedly connected to the inner wall of the first hollow block. Connecting blocks are fixedly connected to both ends of the spring. The upper surface of the connecting block is fixedly connected to the bottom of the rectangular tube. A steel wire rope is fixedly connected to the inner wall of the connecting block. A circular hole is opened at the bottom of the second U-shaped plate. A first cylinder is fixedly connected to the inner wall of the circular hole. A second cylinder is slidably connected to the inner wall of the first cylinder. The inner wall of the second cylinder is fixedly connected to the surface of the steel wire rope. A ring is fixedly connected to the bottom of the second cylinder. Second hollow blocks are fixedly connected to both the left and right sides of the support platform. Guide sleeves are fixedly connected to the inner walls of the second hollow blocks. Guide posts are slidably connected to the inner walls of the guide sleeves. The bottom of the guide posts is fixedly connected to the upper surface of the base.

[0007] The present invention is further configured such that the pressing head includes a first U-shaped plate, a cylinder, a pressing circular plate and a pressure sensor, the upper surface of the first U-shaped plate is fixedly connected to the bottom of the pressure sensor, the upper surface of the pressure sensor is fixedly connected to the bottom of the first hydraulic cylinder, both the front and rear ends of the cylinder are fixedly connected to the inner wall of the first U-shaped plate, and the inner wall of the pressing circular plate is fixedly connected to the surface of the cylinder.

[0008] The present invention is further configured such that the first hydraulic cylinder and the second hydraulic cylinder are both connected to the digital output port of the controller via shielded wires, the analog output terminal of the pressure sensor is connected to the analog input port of the controller via shielded wires, and the communication interface of the touch screen is connected to the communication port of the controller via shielded wires.

[0009] The present invention is further configured such that a trapezoidal block is fitted to the inner wall of the trapezoidal groove, the upper surface of the trapezoidal block is fitted to the inner wall of the rectangular tube, a rectangular hole is fixedly connected to the upper surface of the rectangular tube, a threaded groove is formed on the upper surface of the trapezoidal block, and a fixing bolt is threadedly connected to the inner wall of the threaded groove.

[0010] The present invention is further configured such that the fixing bolt is located inside a rectangular hole, and the length of the rectangular hole is greater than the diameter of the fixing bolt.

[0011] The present invention is further configured such that a sealing plate is fitted to the inner wall of the first U-shaped plate, and the upper surface of the sealing plate is fixedly connected to the bottom of the box.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This utility model's hydraulic cylinder bending resistance testing equipment, through the cooperation of a second U-shaped plate, a support platform, a rectangular cylinder, a first hollow block, a spring, a connecting block, a wire rope, a circular hole, a first cylinder, a second cylinder, and a circular ring, allows the testing personnel to move the two rectangular cylinders on the support platform synchronously towards the center of the support platform by lowering the circular ring. The moving rectangular cylinders can accurately push the center of the hydraulic cylinder directly below the pressing head, enabling maintenance personnel to quickly and accurately align the center of the hydraulic cylinder with the pressing head, thus making the maintenance and use of this hydraulic cylinder bending resistance testing equipment more convenient.

[0014] The hydraulic cylinder bending resistance testing equipment of this utility model can fix a trapezoidal block inside a rectangular cylinder through the cooperation of threaded grooves and fixing bolts. After the trapezoidal block is fixed inside the rectangular cylinder, the hydraulic cylinder with a size smaller than the minimum distance between two rectangular cylinders can be moved and positioned, thereby effectively expanding the application range of the hydraulic cylinder bending resistance testing equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a right view of the structure of this utility model;

[0017] Figure 3 yes Figure 2 Sectional view at point AA;

[0018] Figure 4 yes Figure 3 Sectional view at point BB;

[0019] Figure 5 This is a bottom view of the box body in this utility model;

[0020] Figure 6 This is a right view of the pressing head in this utility model;

[0021] Figure 7 This is a three-dimensional schematic diagram of the second U-shaped plate in this utility model;

[0022] Figure 8 This is a three-dimensional schematic diagram of the support platform in this utility model;

[0023] Figure 9 This is a three-dimensional schematic diagram of the rectangular tube in this utility model;

[0024] Figure 10 This is a three-dimensional schematic diagram of the trapezoidal block in this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Base; 2. Support frame; 3. Box body; 4. Touch screen display; 5. Controller; 6. First hydraulic cylinder; 7. Pressing head; 71. First U-shaped plate; 72. Cylinder; 73. Pressing round plate; 74. Pressure sensor; 8. Through hole; 9. Second hydraulic cylinder; 10. Second U-shaped plate; 11. Support platform; 12. Trapezoidal groove; 13. Trapezoidal column; 14. Rectangular cylinder; 15. First hollow block; 16. Spring; 17. Connecting block; 18. Steel wire rope; 19. Round hole; 20. First cylinder; 21. Second cylinder; 22. Ring; 23. Second hollow block; 24. Guide sleeve; 25. Guide column; 26. Trapezoidal block; 27. Rectangular hole; 28. Threaded groove; 29. ​​Fixing bolt; 30. Sealing plate. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figures 1 to 9As shown, the hydraulic cylinder bending resistance testing equipment includes a base 1, a support frame 2 fixedly connected to the upper surface of the base 1, a box 3 fixedly connected to the front of the support frame 2, a touch screen display 4 fixedly connected to the front of the box 3, a controller 5 fixedly connected to the inner wall of the box 3, a first hydraulic cylinder 6 fixedly connected to the inner wall of the box 3, a pressing head 7 fixedly connected to the bottom of the first hydraulic cylinder 6, a through hole 8 opened at the bottom of the box 3, the inner wall of the through hole 8 fitting against the surface of the pressing head 7, a second hydraulic cylinder 9 fixedly connected to the upper surface of the base 1, a second U-shaped plate 10 fixedly connected to the upper surface of the second hydraulic cylinder 9, a support platform 11 fixedly connected to the upper surface of the second U-shaped plate 10, a trapezoidal groove 12 opened on the upper surface of the support platform 11, a trapezoidal column 13 fixedly connected to the inner wall of the trapezoidal groove 12, a rectangular tube 14 sleeved on the surface of the support platform 11, a first hollow block 15 fixedly connected to the bottom of the support platform 11, and a spring 16 fixedly connected to the inner wall of the first hollow block 15. Connecting blocks 17 are fixedly connected to both ends of the spring 16. The upper surface of the connecting block 17 is fixedly connected to the bottom of the rectangular tube 14. A steel wire rope 18 is fixedly connected to the inner wall of the connecting block 17. A circular hole 19 is opened at the bottom of the second U-shaped plate 10. A first cylinder 20 is fixedly connected to the inner wall of the circular hole 19. A second cylinder 21 is slidably connected to the inner wall of the first cylinder 20. The inner wall of the second cylinder 21 is fixedly connected to the surface of the steel wire rope 18. The bottom of the second cylinder 21 is fixedly connected to... A ring 22 is attached to the support platform 11. The left and right sides are fixedly connected to the second hollow block 23. The inner wall of the second hollow block 23 is fixedly connected to the guide sleeve 24. The inner wall of the guide sleeve 24 is slidably connected to the guide post 25. The bottom of the guide post 25 is fixedly connected to the upper surface of the base 1. The inner wall of the first U-shaped plate 71 is fitted with a sealing plate 30. The upper surface of the sealing plate 30 is fixedly connected to the bottom of the box 3. The sealing plate 30 can prevent foreign objects from entering the box 3 through the through hole 8.

[0030] The pressing head 7 includes a first U-shaped plate 71, a cylinder 72, a pressing disc 73, and a pressure sensor 74. The pressure sensor 74 is fixedly connected to the bottom of the upper surface of the first U-shaped plate 71. The upper surface of the pressure sensor 74 is fixedly connected to the bottom of the first hydraulic cylinder 6. Both the front and rear ends of the cylinder 72 are fixedly connected to the inner wall of the first U-shaped plate 71. The inner wall of the pressing disc 73 is fixedly connected to the surface of the cylinder 72.

[0031] The first hydraulic cylinder 6 and the second hydraulic cylinder 9 are both connected to the digital output port of the controller 5 through shielded wires. The analog output terminal of the pressure sensor 74 is connected to the analog input port of the controller 5 through shielded wires. The communication interface of the touch screen 4 is connected to the communication port of the controller 5 through shielded wires.

[0032] It should be noted that the pressure sensor 74 is model PT300-50MPa, the controller 5 is model FX5U-32MT / ES, and the touch screen 4 is model TK6071iQ. Through the cooperation of the touch screen 4 and the controller 5, maintenance personnel can control the extension and retraction of the first hydraulic cylinder 6 and the second hydraulic cylinder 9 through the touch screen 4. The pressure sensor 74 can monitor the pressure of the pressing head 7 on the cylinder barrel, and the controller 5 can display the pressure value on the touch screen 4.

[0033] The first hydraulic cylinder 6 can control the support platform 11 to move up or down, the second hydraulic cylinder 9 can control the pressure of the pressing head 7 on the cylinder barrel, and the trapezoidal column 13 in the trapezoidal groove 12 can make the cylinder barrel and the trapezoidal groove 12 have a certain gap, and the trapezoidal column 13 can prevent the cylinder barrel from rolling back and forth on the support platform 11.

[0034] Through the cooperation of the first cylinder 20 and the second cylinder 21, the ring 22 can only move upward or downward. When the first cylinder 20 moves downward, the two rectangular cylinders 14 can move synchronously towards the center of the support platform 11 through the wire rope 18, and the spring 16 is compressed. When the ring 22 is released, the two rectangular cylinders 14 and the ring 22 can automatically return to the initial position through the pushing force of the spring 16 on the connecting block 17. When the two rectangular cylinders 14 move synchronously towards the center of the support platform 11, the moving rectangular cylinders 14 can accurately push the center of the cylinder to the direct below the pressing head 7.

[0035] like Figures 1 to 10 As shown, a trapezoidal block 26 is fitted to the inner wall of the trapezoidal groove 12, the upper surface of the trapezoidal block 26 is fitted to the inner wall of the rectangular tube 14, a rectangular hole 27 is fixedly connected to the upper surface of the rectangular tube 14, a threaded groove 28 is opened on the upper surface of the trapezoidal block 26, and a fixing bolt 29 is threadedly connected to the inner wall of the threaded groove 28.

[0036] The fixing bolt 29 is located inside the rectangular hole 27, and the length of the rectangular hole 27 is greater than the diameter of the fixing bolt 29.

[0037] It should be noted that the trapezoidal block 26 can be fixed inside the rectangular tube 14 by the cooperation of the threaded groove 28 and the fixing bolt 29. Furthermore, since the length of the rectangular hole 27 is greater than the diameter of the fixing bolt 29, the position of the trapezoidal block 26 inside the rectangular tube 14 can be adjusted according to the different lengths of the hydraulic cylinder. After the trapezoidal block 26 is fixed inside the rectangular tube 14, the hydraulic cylinder with a size smaller than the minimum distance between the two rectangular tubes 14 can be moved and positioned, thereby effectively expanding the applicable range of the hydraulic cylinder bending resistance testing equipment.

[0038] The working principle of this utility model is as follows: First, the cylinder to be tested is placed on the trapezoidal column 13. The trapezoidal column 13 ensures a certain gap between the cylinder and the trapezoidal groove 12, and prevents the cylinder from rolling back and forth on the support platform 11. Then, by operating the touch screen 4, the second hydraulic cylinder 9 is extended, and the distance between the cylinder and the pressing head 7 is reduced. When the cylinder contacts the pressing plate 73 on the pressing head 7, and the upward pressure of the first U-shaped plate 71 on the pressure sensor 74 reaches a specified value, the controller 5 controls the second hydraulic cylinder 9 to stop extending based on the data transmitted by the pressure sensor 74.

[0039] Then, by moving the lower ring 22, the second cylinder 21 is moved upward, and the two rectangular cylinders 14 on the support platform 11 are moved synchronously towards the center of the support platform 11 by the wire rope 18. At this time, the center of the cylinder can be accurately pushed to the center of the pressing head 7 by the moving rectangular cylinder 14.

[0040] After the center of the cylinder is directly below the pressing head 7, the ring 22 is released. Through the pushing force of the spring 16 on the connecting block 17, the two rectangular cylinders 14 and the ring 22 can automatically return to their initial positions. Then, by operating the touch screen 4, the first hydraulic cylinder 6 generates a downward pushing force on the pressing head 7, and the pressing plate 73 on the pressing head 7 presses the cylinder. When the pressure detected by the pressure sensor 74 reaches the specified pressure, the controller 5 controls the first hydraulic cylinder 6 according to the data transmitted by the pressure sensor 74, so that the downward pushing force of the first hydraulic cylinder 6 on the pressing head 7 no longer increases.

[0041] After the pressing head 7 presses the cylinder for a certain period of time, the controller 5 reduces the downward thrust of the first hydraulic cylinder 6 on the pressing head 7 to the initial value. Then, by operating the touch screen 4, the second hydraulic cylinder 9 retracts and separates the cylinder from the pressing head 7. When the distance between the cylinder and the pressing head 7 reaches the specified size, the cylinder can be removed from the support platform 11.

[0042] When the length of the cylinder to be inspected is less than the minimum distance between the two rectangular cylinders 14, the trapezoidal block 26 is inserted into the rectangular cylinder 14. Then, the fixing bolt 29 is inserted into the rectangular hole 27 and screwed into the threaded groove 28. At this time, the trapezoidal block 26 can be fixed in the rectangular cylinder 14 by the cooperation of the fixing bolt 29 and the threaded groove 28. The trapezoidal block 26 allows the maintenance personnel to align the center of the smaller cylinder with the pressing head 7 when the ring 22 is lowered.

[0043] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A cylinder bending detection apparatus, characterized by: Includes a base (1), a support frame (2) fixedly connected to the upper surface of the base (1), a box body (3) fixedly connected to the front of the support frame (2), a touch screen display (4) fixedly connected to the front of the box body (3), a controller (5) fixedly connected to the inner wall of the box body (3), a first hydraulic cylinder (6) fixedly connected to the inner wall of the box body (3), a pressing head (7) fixedly connected to the bottom of the first hydraulic cylinder (6), and a through hole (8) opened at the bottom of the box body (3). The inner wall of the through hole (8) is connected to... The surface of the pressing head (7) is attached, and a second hydraulic cylinder (9) is fixedly connected to the upper surface of the base (1). A second U-shaped plate (10) is fixedly connected to the upper surface of the second hydraulic cylinder (9). A support platform (11) is fixedly connected to the upper surface of the second U-shaped plate (10). A trapezoidal groove (12) is opened on the upper surface of the support platform (11). A trapezoidal column (13) is fixedly connected to the inner wall of the trapezoidal groove (12). A rectangular tube (14) is fitted on the surface of the support platform (11). The bottom of the support platform (11) is fixedly... A first hollow block (15) is fixedly connected to the inner wall of the first hollow block (15), and a spring (16) is fixedly connected to the inner wall of the first hollow block (15). Connecting blocks (17) are fixedly connected to both ends of the spring (16). The upper surface of the connecting block (17) is fixedly connected to the bottom of the rectangular tube (14), and a steel wire rope (18) is fixedly connected to the inner wall of the connecting block (17). A circular hole (19) is opened at the bottom of the second U-shaped plate (10), and a first cylindrical tube (20) is fixedly connected to the inner wall of the circular hole (19). The first cylindrical tube (20)... The inner wall of the support platform (11) is slidably connected to a second cylinder (21), the inner wall of the second cylinder (21) is fixedly connected to the surface of the wire rope (18), the bottom of the second cylinder (21) is fixedly connected to a ring (22), the left and right sides of the support platform (11) are fixedly connected to a second hollow block (23), the inner wall of the second hollow block (23) is fixedly connected to a guide sleeve (24), the inner wall of the guide sleeve (24) is slidably connected to a guide post (25), the bottom of the guide post (25) is fixedly connected to the upper surface of the base (1).

2. The hydraulic cylinder barrel bending resistance testing equipment according to claim 1, characterized in that: The pressing head (7) includes a first U-shaped plate (71), a cylinder (72), a pressing disc (73), and a pressure sensor (74). The pressure sensor (74) is fixedly connected to the bottom of the upper surface of the first U-shaped plate (71). The upper surface of the pressure sensor (74) is fixedly connected to the bottom of the first hydraulic cylinder (6). The front and rear ends of the cylinder (72) are fixedly connected to the inner wall of the first U-shaped plate (71). The inner wall of the pressing disc (73) is fixedly connected to the surface of the cylinder (72).

3. The hydraulic cylinder barrel bending resistance testing equipment according to claim 2, characterized in that: The first hydraulic cylinder (6) and the second hydraulic cylinder (9) are both connected to the digital output port of the controller (5) through shielded wires. The analog output terminal of the pressure sensor (74) is connected to the analog input port of the controller (5) through shielded wires. The communication interface of the touch screen (4) is connected to the communication port of the controller (5) through shielded wires.

4. The hydraulic cylinder barrel bending resistance testing equipment according to claim 1, characterized in that: The inner wall of the trapezoidal groove (12) is fitted with a trapezoidal block (26), the upper surface of the trapezoidal block (26) is fitted with the inner wall of the rectangular tube (14), the upper surface of the rectangular tube (14) is fixedly connected with a rectangular hole (27), the upper surface of the trapezoidal block (26) is provided with a threaded groove (28), and the inner wall of the threaded groove (28) is threaded with a fixing bolt (29).

5. The hydraulic cylinder barrel bending resistance testing equipment according to claim 4, characterized in that: The fixing bolt (29) is located inside the rectangular hole (27), the length of which is greater than the diameter of the fixing bolt (29).

6. The hydraulic cylinder barrel bending resistance testing equipment according to claim 2, characterized in that: A sealing plate (30) is fitted to the inner wall of the first U-shaped plate (71), and the upper surface of the sealing plate (30) is fixedly connected to the bottom of the box body (3).

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