Tensile detection equipment for oil cylinder barrel

Abstract

The utility model belongs to the technical field of oil cylinder barrel detection, and particularly relates to oil cylinder barrel tensile strength detection equipment which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a first U-shaped plate, and the left side and the right side of the inner wall of the first U-shaped plate are fixedly connected with lower supports. The upper surface of the bottom plate is fixedly connected with a guide column, the surface of the guide column is sleeved with a guide sleeve, the surface of the guide sleeve is fixedly connected with an upper support, the surface of the upper support and the surface of the lower support are each sleeved with a first rectangular cylinder, and the upper side and the lower side of each first rectangular cylinder are each provided with a through hole. According to the tensile detection equipment for the oil cylinder barrel, the surface of the oil cylinder barrel is clamped through the upper clamping block and the lower clamping block, the inner clamping block abuts against the inner wall of the oil cylinder barrel, at the moment, the oil cylinder barrel is fixed more firmly by adopting an internal and external combined fixing mode, the situation of looseness in the tensile detection process is avoided, and the detection accuracy and safety are improved.

Description

Technical Field

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

[0002] In industrial production, hydraulic cylinders, as core components of hydraulic systems, are widely used in engineering machinery, metallurgical equipment, shipbuilding, and other fields. Their tensile properties directly affect the safety and service life of the entire hydraulic system, making accurate tensile testing of hydraulic cylinders crucial. However, existing hydraulic cylinder tensile testing equipment often uses a single clamping method to fix the specimen. When a large tensile force is applied to the hydraulic cylinder, insufficient clamping force often leads to slippage and loosening of the cylinder, resulting in unstable stress conditions and affecting data accuracy. Furthermore, marking the initial length baseline of the deformed hydraulic cylinder requires manual measurement of the marking position with a ruler and drawing lines with a marker, making the operation cumbersome and inefficient. Utility Model Content

[0003] The purpose of this utility model is to provide a hydraulic cylinder barrel tensile strength testing device, which solves the problem that the existing hydraulic cylinder barrel tensile strength testing devices have insufficient clamping force due to a single clamping method, resulting in unstable test force state and poor data accuracy. At the same time, it solves the problem of cumbersome operation process and low efficiency when manually marking the initial length baseline.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A hydraulic cylinder tensile strength testing device includes a base plate. A first U-shaped plate is fixedly connected to the upper surface of the base plate. Lower supports are fixedly connected to both the left and right sides of the inner wall of the first U-shaped plate. A guide post is fixedly connected to the upper surface of the base plate. A guide sleeve is fitted onto the surface of the guide post. An upper support is fixedly connected to the surface of the guide sleeve. A first rectangular cylinder is fitted onto the surface of both the upper and lower supports. Through holes are opened on both the upper and lower sides of the first rectangular cylinder. An inner clamping block is fixedly connected to the inner wall of the through hole. A first rectangular hole is opened inside both the upper and lower supports. A first hydraulic cylinder is fixedly connected to the inner wall of the first rectangular hole and the side of the inner clamping block. A second rectangular cylinder is fitted onto the surface of the lower support. A lower clamping block is fixedly connected to the upper surface of the two rectangular tubes, and a lower connecting block is fixedly connected to the bottom of the second rectangular tube. A second hydraulic cylinder is fixedly connected to the side of the lower connecting block and the bottom of the lower support. A third rectangular tube is sleeved on the surface of the upper support. An upper clamping block is fixedly connected to the bottom of the third rectangular tube, and an upper connecting block is fixedly connected to the upper surface of the third rectangular tube. A third hydraulic cylinder is fixedly connected to the side of the upper connecting block and the upper surface of the upper support. A second rectangular hole is opened on the upper surface of the first U-shaped plate. A fourth hydraulic cylinder is fixedly connected to the upper surface of the first U-shaped plate. A pressure sensor is fixedly connected to the upper surface of the fourth hydraulic cylinder and the bottom of the upper support. A control module is fixedly connected to the upper surface of the base plate.

[0006] The present invention is further configured such that the control module includes a housing, a controller, and a touch display screen, the bottom of the housing is fixedly connected to the upper surface of the base plate, the upper surface of the controller is fixedly connected to the inner wall of the housing, and the upper surface of the housing is fixedly connected to the bottom of the touch display screen.

[0007] The present invention is further configured such that the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, and the fourth hydraulic cylinder are all 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.

[0008] The present invention is further configured such that a stop block is fixedly connected to the upper surface of the base plate, an arc-shaped groove is provided on the right side of the stop block, a threaded post is fixedly connected to the upper surface of the stop block, a slider is sleeved on the surface of the threaded post, nuts are fitted on both the upper and lower sides of the slider, the inner wall of the nuts is threadedly connected to the surface of the threaded post, a second U-shaped plate is fixedly connected to the right side of the slider, a scale is fitted on the inner wall of the second U-shaped plate, the bottom of the scale is fixedly connected to the upper surface of the stop block, and a marker pen is fixedly connected to the right side of the second U-shaped plate.

[0009] The present invention is further configured such that the lower clamping block and the upper clamping block are both located between the inner clamping block and the guide post, and the lower clamping block and the inner clamping block on the lower bracket are both located within the second rectangular hole.

[0010] The present invention is further configured such that there are two guide posts, and the two guide posts are located on the left and right sides of the first U-shaped plate, respectively.

[0011] The technical effects achieved by this utility model are as follows:

[0012] The hydraulic cylinder tensile testing equipment of this utility model uses upper and lower clamping blocks to clamp the surface of the hydraulic cylinder, while the inner clamping block abuts against the inner wall of the hydraulic cylinder. At this time, by adopting a combination of internal and external fixing methods, the hydraulic cylinder is more firmly fixed, avoiding loosening during the tensile testing process and improving the accuracy and safety of the test.

[0013] This utility model's hydraulic cylinder tensile strength testing equipment, through the adjustment of the mating structure of the threaded column and the locking nut, allows the testing personnel to pre-adjust the height of the marker pen according to the initial length of the hydraulic cylinder. After the hydraulic cylinder is placed in the arc-shaped groove, the distance between the top of the hydraulic cylinder and the marker pen can be observed to quickly determine whether the hydraulic cylinder is deformed. At the same time, when the testing personnel rotate the hydraulic cylinder, the initial length baseline can be marked on the surface of the deformed hydraulic cylinder with the marker pen, thus enabling the testing personnel to quickly determine the degree of deformation of the hydraulic cylinder. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 yes Figure 2 Sectional view at point AA;

[0017] Figure 4 This is a three-dimensional schematic diagram of the first U-shaped plate in this utility model;

[0018] Figure 5 This is a three-dimensional schematic diagram of the lower support of this utility model;

[0019] Figure 6 This is a three-dimensional schematic diagram of the upper support in this utility model;

[0020] Figure 7 This is a three-dimensional schematic diagram of the first rectangular tube in this utility model;

[0021] Figure 8 This is a right view of the control module in this utility model;

[0022] Figure 9 yes Figure 8 Sectional view at point BB.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base plate; 2. First U-shaped plate; 3. Lower bracket; 4. Guide post; 5. Guide sleeve; 6. Upper bracket; 7. First rectangular cylinder; 8. Through hole; 9. Inner clamping block; 10. First rectangular hole; 11. First hydraulic cylinder; 12. Second rectangular cylinder; 13. Lower clamping block; 14. Lower connecting block; 15. Second hydraulic cylinder; 16. Third rectangular cylinder; 17. Upper clamping block; 18. Upper connecting block; 19. Third hydraulic cylinder; 20. Second rectangular hole; 21. Fourth hydraulic cylinder; 22. Pressure sensor; 23. Control module; 231. Box body; 232. Controller; 233. Touch screen; 24. Stop block; 25. Arc groove; 26. Threaded post; 27. Slider; 28. Nut; 29. ​​Second U-shaped plate; 30. Ruler; 31. Marker pen. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] like Figures 1 to 9As shown, the hydraulic cylinder tensile strength testing equipment includes a base plate 1. A first U-shaped plate 2 is fixedly connected to the upper surface of the base plate 1. Lower supports 3 are fixedly connected to both the left and right sides of the inner wall of the first U-shaped plate 2. A guide post 4 is fixedly connected to the upper surface of the base plate 1. A guide sleeve 5 is fitted onto the surface of the guide post 4. An upper support 6 is fixedly connected to the surface of the guide sleeve 5. A first rectangular cylinder 7 is fitted onto both the surface of the upper support 6 and the surface of the lower support 3. Through holes 8 are opened on both the upper and lower sides of the first rectangular cylinder 7. An inner clamping block 9 is fixedly connected to the inner wall of the through hole 8. A first rectangular hole 10 is opened inside both the upper support 6 and the lower support 3. A first hydraulic cylinder 11 is fixedly connected to the inner wall of the first rectangular hole 10 and the side of the inner clamping block 9. A second rectangular cylinder 12 is fitted onto the surface of the lower support 3. A lower clamping block 13 is fixedly connected to the upper surface. A lower connecting block 14 is fixedly connected to the bottom of the second rectangular tube 12. A second hydraulic cylinder 15 is fixedly connected to the side of the lower connecting block 14 and the bottom of the lower support 3. A third rectangular tube 16 is sleeved on the surface of the upper support 6. An upper clamping block 17 is fixedly connected to the bottom of the third rectangular tube 16. An upper connecting block 18 is fixedly connected to the upper surface of the third rectangular tube 16. A third hydraulic cylinder 19 is fixedly connected to the side of the upper connecting block 18 and the upper surface of the upper support 6. A second rectangular hole 20 is opened on the upper surface of the first U-shaped plate 2. A fourth hydraulic cylinder 21 is fixedly connected to the upper surface of the first U-shaped plate 2. A pressure sensor 22 is fixedly connected to the upper surface of the fourth hydraulic cylinder 21 and the bottom of the upper support 6. A control module 23 is fixedly connected to the upper surface of the base plate 1.

[0028] The control module 23 includes a housing 231, a controller 232, and a touch display screen 233. The bottom of the housing 231 is fixedly connected to the upper surface of the base plate 1, the upper surface of the controller 232 is fixedly connected to the inner wall of the housing 231, and the upper surface of the housing 231 is fixedly connected to the bottom of the touch display screen 233.

[0029] The first hydraulic cylinder 11, the second hydraulic cylinder 15, the third hydraulic cylinder 19, and the fourth hydraulic cylinder 21 are all connected to the digital output port of the controller 232 via shielded wires. The analog output terminal of the pressure sensor 22 is connected to the analog input port of the controller 232 via shielded wires. The communication interface of the touch screen 233 is connected to the communication port of the controller 232 via shielded wires.

[0030] The lower clamping block 13 and the upper clamping block 17 are both located between the inner clamping block 9 and the guide post 4. The lower clamping block 13 and the inner clamping block 9 on the lower bracket 3 are both located inside the second rectangular hole 20. There are two guide posts 4, and the two guide posts 4 are located on the left and right sides of the first U-shaped plate 2 respectively.

[0031] It should be noted that, through the cooperation of the guide post 4 and the guide sleeve 5, the upper support 6 can only move up and down; the inner clamping block 9 can only move left and right through the first rectangular tube 7, and the inner clamping block 9 can only move left and right through the first hydraulic cylinder 11; the lower clamping block 13 can only move left and right through the second rectangular tube 12, and the lower clamping block 13 can only move left and right through the second hydraulic cylinder 15; the upper clamping block 17 can only move left and right through the third rectangular tube 16, and the upper clamping block 17 can only move left and right through the third hydraulic cylinder 19. When the cylinder is fixed between the first U-shaped plate 2 and the upper support 6, the fourth hydraulic cylinder 21 can apply an upward pulling force to the cylinder, and the magnitude of the pulling force is monitored by the pressure sensor 22. At the same time, when the pulling force on the cylinder reaches a specified value, the controller 232 can automatically control the fourth hydraulic cylinder 21 according to the data transmitted by the pressure sensor 22, and prevent the upward pulling force applied by the fourth hydraulic cylinder 21 to the cylinder from increasing.

[0032] The first hydraulic cylinder 11, the second hydraulic cylinder 15, the third hydraulic cylinder 19 and the fourth hydraulic cylinder 21 are all of model HOB-100 / 50-FA, the pressure sensor 22 is of model PT300-50MPa, the controller 232 is of model FX5U-32MT / ES, and the touch display screen 233 is of model TK6071iQ.

[0033] like Figures 1 to 3 As shown, a stop block 24 is fixedly connected to the upper surface of the base plate 1. An arc-shaped groove 25 is provided on the right side of the stop block 24. A threaded post 26 is fixedly connected to the upper surface of the stop block 24. A slider 27 is fitted on the surface of the threaded post 26. Nuts 28 are fitted on both the upper and lower sides of the slider 27. The inner wall of the nut 28 is threadedly connected to the surface of the threaded post 26. A second U-shaped plate 29 is fixedly connected to the right side of the slider 27. A scale 30 is fitted on the inner wall of the second U-shaped plate 29. The bottom of the scale 30 is fixedly connected to the upper surface of the stop block 24. A marker pen 31 is fixedly connected to the right side of the second U-shaped plate 29.

[0034] It should be noted that, through the cooperation of the scale 30 and the second U-shaped plate 29, the slider 27 can only move up and down on the threaded column 26. The scale on the scale 30 allows maintenance personnel to intuitively judge the height of the marker pen 31. By adjusting the cooperation structure between the threaded column 26 and the locking nut 28, the inspector can pre-adjust the height of the marker pen 31 according to the initial length of the cylinder. After the cylinder is placed in the arc groove 25, the cylinder can be positioned through the arc groove 25. By observing the distance between the top of the cylinder and the marker pen 31, it is possible to quickly determine whether the cylinder is deformed. At the same time, when the inspector rotates the cylinder, the initial length baseline can be marked on the surface of the deformed cylinder using the marker pen 31, which allows the inspector to quickly judge the degree of deformation of the cylinder.

[0035] The working principle of this utility model is as follows: First, the cylinder is placed on the first U-shaped plate 2, and the inner clamping block 9 on the lower support 3 is located inside the cylinder. Then, by operating the touch screen 233, the second hydraulic cylinder 15 is extended, and the lower clamping block 13 clamps the surface of the cylinder. Then, by operating the touch screen 233, the fourth hydraulic cylinder 21 is retracted, and the inner clamping block 9 on the upper support 6 is moved into the cylinder.

[0036] When the inner clamping block 9 on the upper bracket 6 moves into the cylinder, the fourth hydraulic cylinder 21 stops retracting. Then, by operating the touch screen 233, the third hydraulic cylinder 19 extends and the lower clamping block 13 clamps the surface of the cylinder. At the same time, by operating the touch screen 233, the first hydraulic cylinder 11 retracts and the inner clamping block 9 abuts against the inner wall of the cylinder. At this time, by adopting a combination of internal and external fixing methods, the cylinder is more firmly fixed.

[0037] Then, by operating the touch screen 233, the fourth hydraulic cylinder 21 generates an upward thrust on the upper bracket 6 and the cylinder barrel is subjected to an upward pull. At the same time, the magnitude of the pull is monitored by the pressure sensor 22. When the pull on the cylinder barrel reaches the specified value, the controller 232, based on the data transmitted by the pressure sensor 22, prevents the thrust of the fourth hydraulic cylinder 21 on the upper bracket 6 from increasing.

[0038] After the cylinder is subjected to tension for a certain period of time, the controller 232 reduces the thrust of the fourth hydraulic cylinder 21 on the upper support 6 to zero. Then, by controlling the first hydraulic cylinder 11 and the third hydraulic cylinder 19, the upper clamping block 17 and the inner clamping block 9 are released from the cylinder. Then, by controlling the fourth hydraulic cylinder 21, the inner clamping block 9 on the upper support 6 is moved out of the cylinder. Then, by controlling the second hydraulic cylinder 15, the lower clamping block 13 is released from the cylinder. At this point, the tested cylinder can be removed.

[0039] 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 hydraulic cylinder barrel tensile strength testing device, characterized in that: The system includes a base plate (1), on the upper surface of which a first U-shaped plate (2) is fixedly connected. Lower supports (3) are fixedly connected to the left and right sides of the inner wall of the first U-shaped plate (2). A guide post (4) is fixedly connected to the upper surface of the base plate (1). A guide sleeve (5) is fitted onto the surface of the guide post (4). An upper support (6) is fixedly connected to the surface of the guide sleeve (5). A first rectangular tube (7) is fitted onto the surface of both the upper support (6) and the lower support (3). Through holes (8) are opened on both the upper and lower sides of the first rectangular tube (7). An inner clamping block (9) is fixedly connected to the inner wall of the through hole (8). A first rectangular hole (10) is opened inside both the upper support (6) and the lower support (3). A first hydraulic cylinder (11) is fixedly connected to the inner wall of the first rectangular hole (10) and the side of the inner clamping block (9). A second rectangular tube (12) is fitted onto the surface of the lower support (3). A lower clamping block (13) is fixedly connected to the surface of the first U-shaped plate (2). A lower connecting block (14) is fixedly connected to the bottom of the second rectangular tube (12). A second hydraulic cylinder (15) is fixedly connected to the side of the lower connecting block (14) and the bottom of the lower support (3). A third rectangular tube (16) is sleeved on the surface of the upper support (6). An upper clamping block (17) is fixedly connected to the bottom of the third rectangular tube (16). An upper connecting block (18) is fixedly connected to the upper surface of the third rectangular tube (16). A third hydraulic cylinder (19) is fixedly connected to the side of the upper connecting block (18) and the upper surface of the upper support (6). A second rectangular hole (20) is opened on the upper surface of the first U-shaped plate (2). A fourth hydraulic cylinder (21) is fixedly connected to the upper surface of the first U-shaped plate (2). A pressure sensor (22) is fixedly connected to the upper surface of the fourth hydraulic cylinder (21) and the bottom of the upper support (6). A control module (23) is fixedly connected to the upper surface of the base plate (1).

2. The hydraulic cylinder barrel tensile testing equipment according to claim 1, characterized in that: The control module (23) includes a housing (231), a controller (232), and a touch screen (233). The bottom of the housing (231) is fixedly connected to the upper surface of the base plate (1), the upper surface of the controller (232) is fixedly connected to the inner wall of the housing (231), and the upper surface of the housing (231) is fixedly connected to the bottom of the touch screen (233).

3. The cylinder barrel tensile testing equipment according to claim 2, characterized in that: The first hydraulic cylinder (11), the second hydraulic cylinder (15), the third hydraulic cylinder (19) and the fourth hydraulic cylinder (21) are all connected to the digital output port of the controller (232) through shielded wires. The analog output terminal of the pressure sensor (22) is connected to the analog input port of the controller (232) through shielded wires. The communication interface of the touch screen (233) is connected to the communication port of the controller (232) through shielded wires.

4. The cylinder barrel tensile testing equipment according to claim 1, characterized in that: A stop block (24) is fixedly connected to the upper surface of the base plate (1). An arc groove (25) is provided on the right side of the stop block (24). A threaded column (26) is fixedly connected to the upper surface of the stop block (24). A slider (27) is fitted on the surface of the threaded column (26). Nuts (28) are fitted on both the upper and lower sides of the slider (27). The inner wall of the nut (28) is threadedly connected to the surface of the threaded column (26). A second U-shaped plate (29) is fixedly connected to the right side of the slider (27). A scale (30) is fitted on the inner wall of the second U-shaped plate (29). The bottom of the scale (30) is fixedly connected to the upper surface of the stop block (24). A marker pen (31) is fixedly connected to the right side of the second U-shaped plate (29).

5. The hydraulic cylinder barrel tensile testing equipment according to claim 1, characterized in that: The lower clamping block (13) and the upper clamping block (17) are both located between the inner clamping block (9) and the guide post (4), and the lower clamping block (13) and the inner clamping block (9) on the lower bracket (3) are both located in the second rectangular hole (20).

6. The cylinder barrel tensile testing equipment according to claim 1, characterized in that: The number of guide posts (4) is two, and the two guide posts (4) are located on the left and right sides of the first U-shaped plate (2) respectively.

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