Hydraulic element detection device

Abstract

The invention relates to the technical field of oil cylinder detection, in particular to a hydraulic element detection device which comprises a detection table and an oil cylinder bracket and further comprises a plurality of clamping plates arranged on the detection table. The oil leakage detection unit is arranged on the detection table, is connected with the clamping plate and is used for driving the clamping plate to move towards the oil cylinder and is attached to an oil port of the oil cylinder; and the stroke detection unit is arranged on the detection table and is used for detecting the working stroke of the oil cylinder when the piston rod of the oil cylinder extends to the end part, so that when a worker detects the oil cylinder, the oil leakage detection unit and the stroke detection unit are matched to detect the working stroke of the oil cylinder. According to the invention, integrated detection of the sealing performance and the working stroke of the oil cylinder can be realized, the tedious process of traditional step-by-step operation is avoided, the detection efficiency is obviously improved, and the device is especially suitable for rapid detection of batch oil cylinders.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinder detection, in particular to a hydraulic component detection device. Background Art

[0002] Hydraulic cylinders are key actuators in hydraulic systems and are widely used in engineering machinery, metallurgical equipment, aerospace and other fields. Their performance directly affects the stability and reliability of the system. The cylinders must meet strict sealing requirements (to prevent oil leakage) and accurate stroke control during operation. Therefore, inspection before leaving the factory or after maintenance is crucial.

[0003] However, in actual use, we found that oil leakage detection and stroke detection of the cylinder usually require independent testing processes and equipment. The operation process is not consistent, resulting in a long detection cycle and difficulty in meeting the needs of batch detection. It not only increases the detection time, but also makes it difficult to achieve efficient and accurate automated detection. For this reason, we propose a hydraulic component detection device. Summary of the invention

[0004] A technical problem to be solved by the present application is: how to design a hydraulic component detection device capable of detecting oil leakage and stroke of an oil cylinder.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a hydraulic component detection device, a hydraulic component detection device, including a detection platform and a cylinder bracket, and also includes:

[0006] A plurality of clamping plates, wherein the plurality of clamping plates are respectively arranged on the detection table;

[0007] An oil leakage detection unit, which is arranged on the detection table and connected to the clamping plate, and is used to drive the clamping plate to shift toward the oil cylinder and fit the oil port of the oil cylinder;

[0008] A stroke detection unit is arranged on the detection platform and is used to detect the working stroke of the oil cylinder when the piston rod of the oil cylinder extends to the end.

[0009] In some embodiments, the oil leakage detection unit includes two mounting frames movably arranged on both sides of the detection platform, and the plurality of clamping plates are respectively arranged on one side of the mounting frame close to the oil cylinder. A shifting member is provided on the detection platform for driving the mounting frame to shift and adjust.

[0010] In some embodiments, the displacement member includes a fixed seat arranged on the detection table, a bidirectional screw is rotatably arranged on the fixed seat, a driving motor is arranged on the fixed seat, the output end of the driving motor is connected to the bidirectional screw, a guide rod is arranged on the fixed seat, the mounting frame is slidably sleeved on the guide rod, and the mounting frame is threadedly connected to both sides of the bidirectional screw respectively.

[0011] In some embodiments, the clamping plate includes an arc-shaped plate arranged on a mounting frame, a fitting plate is arranged on the top of the arc-shaped plate, a compensation plate is arranged on the end of the cylinder body of the arc-shaped plate close to the oil cylinder, and the arc-shaped plate, the fitting plate and the compensation plate are all provided with oil-absorbing cotton on one side close to the oil cylinder through Velcro.

[0012] In some embodiments, an upper sealing plate is provided on the top of the bonding plate, the height of the upper sealing plate close to the center is higher than the height of the upper sealing plate away from the center, and oil-absorbing cotton is provided on the upper sealing plate away from the center.

[0013] In some embodiments, any of the mounting frames includes a fixed plate threadedly connected to a bidirectional screw rod, a limiting plate is arranged on the top of the fixed plate, a rotating shaft is rotatably arranged on the limiting plate, a connecting frame is arranged on the rotating shaft, the arc plates on the adjacent sides are respectively arranged on the connecting frames, a torsion spring is sleeved on the outer side of the rotating shaft, the two ends of the torsion spring are respectively arranged and connected to the connecting frame and the limiting plate, a fixed gear is arranged on the rotating shaft, and a fixed rack used in conjunction with the fixed gear is arranged on the detection table.

[0014] In some embodiments, the stroke detection unit includes a sliding frame arranged on a mounting frame away from a side of a fixed rack, a bending rod is slidably arranged in the sliding frame, a locking piece is arranged between the sliding frame and the bending rod for locking and positioning the bending rod, and a detection piece is arranged on the bending rod for detecting the stroke of the cylinder.

[0015] In some embodiments, the bent rod is provided with a plurality of threaded holes on one side close to the sliding frame, the locking member comprises a fastening bolt threadedly connected to the threaded hole, a straight slot is provided on the sliding frame, and the fastening bolt movably passes through the straight slot.

[0016] In some embodiments, the detection component includes an electric push rod arranged on a bent rod, a positioning plate is arranged at the end of the electric push rod, a pressure sensor cooperating with the piston rod of the oil cylinder is arranged on the positioning plate, a rangefinder and an alarm are arranged on the positioning plate, the pressure sensor, rangefinder and alarm are electrically connected, and a reflective plate is arranged on the bent rod.

[0017] In some embodiments, the oil-absorbing cotton is dipped with an oxidant solution.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. Integrated detection to improve efficiency: By setting up the oil leakage detection unit and the stroke detection unit, the cylinder sealing and working stroke detection are realized, avoiding the cumbersome process of traditional step-by-step operation, significantly improving the detection efficiency, especially suitable for the rapid detection of batch cylinders;

[0020] 2. Adaptive clamping seal to improve detection accuracy: The clamping plate structure driven by a bidirectional screw rod, combined with the design of arc plate, fitting plate and oil-absorbing cotton, can fit the oil port position of the oil cylinder to ensure a tight fit, effectively capture tiny leaks, and improve the accuracy and reliability of oil leakage detection;

[0021] 3. Intelligent stroke detection and convenient operation: Through the coordinated action of the electric push rod, pressure sensor and rangefinder, the end position of the piston rod is automatically identified and the stroke is accurately measured. Combined with the alarm to feedback the detection results in real time, manual intervention is reduced, and the difficulty of operation and the risk of misjudgment are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Another structural diagram;

[0024] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the partial structure explosion of the stroke detection unit of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the oil leakage detection unit of the present invention;

[0027] Figure 6 For the present invention Figure 1 Schematic diagram of the enlarged structure of the middle A area;

[0028] Figure 7 It is a schematic diagram of the explosion of part of the structure of the oil leakage detection unit of the present invention;

[0029] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of the middle B area;

[0030] Fig. 9 It is a schematic diagram of the structure of the clamping plate of the present invention;

[0031] Fig.10 It is a schematic diagram of the explosion of the partial structure of the plywood plate of the present invention.

[0032] In the figure: 1. test bench; 2. oil cylinder bracket; 3. clamping plate; 31. arc plate; 32. laminating plate; 33. compensation plate; 34. oil absorbing cotton; 35. upper sealing plate; 4. oil leakage detection unit; 5. shifting member; 51. fixing seat; 52. bidirectional screw rod; 53. driving motor; 54. guide rod; 6. mounting frame; 61. fixing plate; 62. limiting plate; 63. rotating shaft; 64. connecting frame; 65. torsion spring; 66. fixing gear; 67. fixing rack; 7. stroke detection unit; 71. sliding frame; 72. bending rod; 8. locking member; 81. threaded hole; 82. fastening bolt; 83. straight slot; 9. detection member; 91. electric push rod; 92. positioning plate; 93. pressure sensor; 94. distance meter; 95. alarm; 96. reflecting plate. DETAILED DESCRIPTION

[0033] 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.

[0034] Example 1

[0035] See also Figure 1-Figure 10 , the present invention provides a technical solution:

[0036] A hydraulic component detection device includes a detection platform 1 and a cylinder bracket 2. The detection platform 1 is a common existing structure, on which are provided an oil pipe connected to the oil port of the cylinder through a quick connector and a hydraulic component, which is not shown in the figure. The bottom of the cylinder bracket 2 is set on the mesh plate of the detection platform 1, and the top is a V-shaped structure for stably placing the cylinder. In the scheme, the cylinder bracket 2 and the bidirectional screw rod 52 are vertically arranged, but not limited to, and also include:

[0037] A plurality of clamping plates 3, wherein the plurality of clamping plates 3 are respectively arranged on the detection platform 1;

[0038] An oil leakage detection unit 4, which is disposed on the detection platform 1 and connected to the clamping plate 3, and is used to drive the clamping plate 3 to shift toward the oil cylinder and fit the oil port of the oil cylinder;

[0039] The oil leakage detection unit 4 includes two mounting frames 6 movably arranged on both sides of the detection platform 1, and the plurality of clamping plates 3 are respectively arranged on one side of the mounting frame 6 close to the oil cylinder. The detection platform 1 is provided with a shifting member 5 for driving the mounting frame 6 to shift and adjust;

[0040] The displacement member 5 includes a fixed seat 51 arranged on the detection platform 1, a bidirectional screw rod 52 is rotatably arranged on the fixed seat 51, a driving motor 53 is arranged on the fixed seat 51, an output end of the driving motor 53 is connected to the bidirectional screw rod 52, a guide rod 54 is arranged on the fixed seat 51, the mounting frame 6 is slidably sleeved on the guide rod 54, and the mounting frame 6 is respectively threadedly connected to both sides of the bidirectional screw rod 52;

[0041] The driving motor 53 drives the bidirectional screw rod 52 to rotate, and under the action of the guide rod 54, drives the mounting frames 6 on both sides to shift to both sides synchronously;

[0042] The clamping plate 3 comprises an arc plate 31 arranged on the mounting frame 6, a fitting plate 32 is arranged on the top of the arc plate 31, a compensation plate 33 is arranged on the end of the cylinder body of the arc plate 31 close to the oil cylinder, and oil-absorbing cotton 34 is arranged on the arc plate 31, the fitting plate 32 and the side of the compensation plate 33 close to the oil cylinder through Velcro, wherein the arc plate 31 and the fitting plate 32 are designed as an integral molding to ensure the fitting effect of the oil port position of the oil cylinder;

[0043] The arc plate 31 is attached to the outer wall of the oil cylinder, and the attaching plate 32 is attached to the oil port of the oil cylinder. Two adjacent clamping plates 3 can be used in combination to form a complete clamping structure. When the staff places them properly and the attaching plates 32 are aligned, the oil port of the oil cylinder can be slightly adjusted, thereby facilitating the connection of the quick connector.

[0044] After the test is completed, if the oil-absorbing cotton 34 is free of oil stains, it can continue to be used. If it is oily, it needs to be replaced. When replacing, only the corresponding piece needs to be replaced;

[0045] An upper sealing plate 35 is arranged on the top of the laminating plate 32. The height of the upper sealing plate 35 near the center is higher than that of the side away from the center. The side away from the center of the upper sealing plate 35 is provided with oil-absorbing cotton 34. The upper sealing plate 35 is used to protect the oil-absorbing cotton 34 on the bottom laminating plate 32 to prevent the hydraulic oil from dripping when the quick connector is taken out from the oil port of the oil cylinder, thereby affecting the detection situation. The oil-absorbing cotton 34 at this position is automatically replaced according to the oil absorption situation, and it is not necessary to replace it when there is oil pollution.

[0046] Any of the mounting frames 6 includes a fixed plate 61 threadedly connected to the bidirectional screw rod 52, a limit plate 62 is arranged on the top of the fixed plate 61, a rotating shaft 63 is rotatably arranged on the limit plate 62, a connecting frame 64 is arranged on the rotating shaft 63, the arc plates 31 on the adjacent sides are respectively arranged on the connecting frame 64, a torsion spring 65 is sleeved on the outer side of the rotating shaft 63, and the two ends of the torsion spring 65 are respectively arranged and connected to the connecting frame 64 and the limit plate 62, a fixed gear 66 is arranged on the rotating shaft 63, and a fixed rack 67 used in conjunction with the fixed gear 66 is arranged on the detection table 1;

[0047] During the inspection, the staff stands on the side of the inspection platform 1 where the fixing plate 61 is provided: when the inspection is completed, the driving motor 53 controls the bidirectional screw rod 52 to rotate, thereby shifting the two mounting frames 6 (mounting frame 6 and fixing plate 61) to both sides. Initially, under the action of the torsion spring 65 and the limit plate 62, the connecting frame 64 is in a vertical state. Under the continuous movement of the fixing plate 61, the fixed gear 66 and the fixed rack 67 are meshed, and the fixed gear 66 drives the rotating shaft 63 and the connecting frame 64 to rotate, so that the oil-absorbing cotton 34 is displayed in front of the staff, which is convenient for the staff to observe;

[0048] A stroke detection unit 7, which is arranged on the detection platform 1 and is used to detect the working stroke of the oil cylinder when the piston rod of the oil cylinder extends to the end;

[0049] The stroke detection unit 7 includes a sliding frame 71 arranged on the mounting frame 6 at a side away from the fixed rack 67, a bent rod 72 is slidably arranged in the sliding frame 71, a locking member 8 is arranged between the sliding frame 71 and the bent rod 72, and is used to lock and position the bent rod 72, and a detection member 9 is arranged on the bent rod 72, and is used to detect the stroke of the oil cylinder;

[0050] The bent rod 72 is provided with a plurality of threaded holes 81 on one side close to the sliding frame 71, and the locking member 8 includes a fastening bolt 82 threadedly connected to the threaded hole 81. The sliding frame 71 is provided with a straight slot 83, and the fastening bolt 82 movably passes through the straight slot 83. The setting of the straight slot 83 enables the staff to make a slight adjustment according to the initial position of the cylinder piston rod to ensure the accurate positioning of the initial position;

[0051] The detection member 9 includes an electric push rod 91 arranged on the bent rod 72, a positioning plate 92 is arranged at the end of the electric push rod 91, a pressure sensor 93 matched with the piston rod of the oil cylinder is arranged on the positioning plate 92, a distance meter 94 and an alarm 95 are arranged on the positioning plate 92, the pressure sensor 93, the distance meter 94 and the alarm 95 are electrically connected, a reflection plate 96 is arranged on the bent rod 72, and a control terminal is arranged on the positioning plate 92, and the control terminal is connected with the electric push rod 91, the pressure sensor 93, the distance meter 94 and the alarm 95, which is not shown in the figure. Two different sounds are arranged inside the alarm 95, respectively for qualified and unqualified;

[0052] Extend the piston rod of the oil cylinder to its maximum length to start testing, start the electric push rod 91 to retract the positioning plate 92, and after the pressure sensor 93 contacts the piston rod of the oil cylinder and detects a certain pressure, the electric push rod 91 stops working and the rangefinder 94 starts testing. After the measurement is completed, the data is transmitted to the control terminal. When the data is qualified, the alarm 95 emits a qualified sound, otherwise, it emits an unqualified sound. After the test is completed, the electric push rod 91 is reset.

[0053] When in use, during testing, the staff stands on the side of the testing platform 1 where the fixing plate 61 is provided:

[0054] The staff places the oil cylinder at a suitable position on the oil cylinder bracket 2, and adjusts the fastening bolts 82 so that the reflector 96 on the bent rod 72 is located at the initial position of the oil cylinder piston rod. The driving motor 53 starts to work, and the driving motor 53 drives the bidirectional screw rod 52 to rotate. Under the action of the guide rod 54, the mounting frames 6 on both sides (mounting frame 6 and fixing plate 61) are driven to shift inward synchronously until they fit the oil cylinder and stop. Then, the quick connector is connected to start the test.

[0055] When the detection is completed, the driving motor 53 controls the bidirectional screw rod 52 to rotate, thereby shifting the two mounting frames 6 (mounting frame 6 and fixed plate 61) to both sides. Initially, under the action of the torsion spring 65 and the limit plate 62, the connecting frame 64 is in a vertical state. Under the continuous movement of the fixed plate 61, the fixed gear 66 and the fixed rack 67 are meshed, and the fixed gear 66 drives the rotating shaft 63 and the connecting frame 64 to rotate, showing the oil-absorbing cotton 34 in front of the staff, which is convenient for the staff to observe;

[0056] Extend the piston rod of the oil cylinder to its maximum length to start testing, start the electric push rod 91 to retract the positioning plate 92, and after the pressure sensor 93 contacts the piston rod of the oil cylinder and detects a certain pressure, the electric push rod 91 stops working and the rangefinder 94 starts testing. After the measurement is completed, the data is transmitted to the control terminal. When the data is qualified, the alarm 95 emits a qualified sound, otherwise, the alarm 95 emits an unqualified sound. After the test is completed, the electric push rod 91 is reset, and the drive motor 53 rotates in the opposite direction to drive the clamping plate 3 to reset.

[0057] Example 2

[0058] See also Figure 1-Figure 10 , the present invention provides a technical solution:

[0059] Different from Example 1, the oil-absorbing cotton 34 is dipped with an oxidant solution. In this solution, the oxidant solution can be a potassium permanganate solution, which can produce some obvious changes and is convenient for staff to observe, but is not limited to a potassium permanganate solution;

[0060] When the solution is a potassium permanganate solution: when it reacts with certain components in the hydraulic oil (such as unsaturated hydrocarbons, etc.), color changes will occur. These color changes include deepening of the solution color, the appearance of new color precipitation or stratification, etc.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A hydraulic component testing device, comprising a testing platform (1) and a cylinder bracket (2), characterized in that: Also included are: A plurality of clamping plates (3), wherein the plurality of clamping plates (3) are respectively arranged on the detection platform (1); An oil leakage detection unit (4), the oil leakage detection unit (4) being arranged on the detection platform (1) and connected to the clamping plate (3), and being used to drive the clamping plate (3) to shift toward the oil cylinder and fit the oil port of the oil cylinder; A stroke detection unit (7) is arranged on the detection platform (1) and is used to detect the working stroke of the oil cylinder when the piston rod of the oil cylinder extends to the end.

2. The hydraulic component detection device according to claim 1, characterized in that: The oil leakage detection unit (4) comprises two mounting frames (6) movably arranged on both sides of the detection platform (1), and a plurality of clamping plates (3) are arranged on one side of the mounting frame (6) close to the oil cylinder. A displacement member (5) is arranged on the detection platform (1) for driving the mounting frame (6) to shift and adjust.

3. The hydraulic component detection device according to claim 2, characterized in that: The displacement member (5) comprises a fixed seat (51) arranged on the detection platform (1); a bidirectional screw rod (52) is rotatably arranged on the fixed seat (51); a driving motor (53) is arranged on the fixed seat (51); an output end of the driving motor (53) is connected to the bidirectional screw rod (52); a guide rod (54) is arranged on the fixed seat (51); the mounting frame (6) is slidably sleeved on the guide rod (54), and the mounting frame (6) is respectively threadedly connected to both sides of the bidirectional screw rod (52).

4. The hydraulic component detection device according to claim 3, characterized in that: The clamping plate (3) comprises an arc-shaped plate (31) arranged on a mounting frame (6); a fitting plate (32) is arranged on the top of the arc-shaped plate (31); a compensation plate (33) is arranged at the end of the cylinder body of the arc-shaped plate (31) close to the oil cylinder; and oil-absorbing cotton (34) is arranged on one side of the arc-shaped plate (31), the fitting plate (32) and the compensation plate (33) close to the oil cylinder via Velcro.

5. The hydraulic component detection device according to claim 4, characterized in that: An upper sealing plate (35) is arranged on the top of the laminating plate (32), the height of the upper sealing plate (35) close to the center is higher than the height of the upper sealing plate (35) away from the center, and oil-absorbing cotton (34) is also arranged on the side of the upper sealing plate (35) away from the center.

6. The hydraulic component detection device according to claim 5, characterized in that: Any of the mounting frames (6) comprises a fixing plate (61) threadedly connected to a bidirectional screw rod (52); a limiting plate (62) is arranged on the top of the fixing plate (61); a rotating shaft (63) is rotatably arranged on the limiting plate (62); a connecting frame (64) is arranged on the rotating shaft (63); the arc-shaped plates (31) on the adjacent sides are respectively arranged on the connecting frame (64); a torsion spring (65) is sleeved on the outer side of the rotating shaft (63); two ends of the torsion spring (65) are respectively arranged to be connected to the connecting frame (64) and the limiting plate (62); a fixed gear (66) is arranged on the rotating shaft (63); and a fixed rack (67) used in conjunction with the fixed gear (66) is arranged on the detection platform (1).

7. The hydraulic component detection device according to claim 6, characterized in that: The stroke detection unit (7) comprises a sliding frame (71) arranged on a mounting frame (6) at a side away from the fixed rack (67); a bent rod (72) is slidably arranged in the sliding frame (71); a locking member (8) is arranged between the sliding frame (71) and the bent rod (72) for locking and positioning the bent rod (72); and a detection member (9) is arranged on the bent rod (72) for detecting the stroke of the oil cylinder.

8. The hydraulic component detection device according to claim 7, characterized in that: A plurality of threaded holes (81) are formed on one side of the bent rod (72) close to the sliding frame (71); the locking member (8) comprises a fastening bolt (82) threadedly connected to the threaded hole (81); a straight slot (83) is formed on the sliding frame (71); and the fastening bolt (82) movably passes through the straight slot (83).

9. The hydraulic component detection device according to claim 7, characterized in that: The detection member (9) comprises an electric push rod (91) arranged on a bent rod (72), a positioning plate (92) being arranged at the end of the electric push rod (91), a pressure sensor (93) cooperating with a piston rod of an oil cylinder being arranged on the positioning plate (92), a distance meter (94) and an alarm (95) being arranged on the positioning plate (92), the pressure sensor (93), the distance meter (94) and the alarm (95) being electrically connected, and a reflection plate (96) being arranged on the bent rod (72).

10. The hydraulic component detection device according to claim 5, characterized in that: The oil-absorbing cotton (34) is dipped with an oxidant solution.

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