Hydraulic oil cylinder pressure test device

Abstract

The utility model relates to the technical field of hydraulic oil cylinder detection, in particular to a hydraulic oil cylinder pressure test device, which is provided with a movable vehicle body structure and is matched with a fixing mechanism at the top of a vehicle body, so that different hydraulic oil cylinders can be transferred, detected and fixed, and the practicability is improved; comprising a pressure testing mechanism and a connecting pipe, the connecting pipe is arranged on the outer side of the pressure testing mechanism, and the pressure testing device further comprises a sleeve frame, a jacking screw sleeve, a jacking screw rod, a jacking screwing handle, a mounting frame, a vehicle plate, a steering shaft, a wheel box, a rolling wheel, an oil cylinder sleeve frame, a clamping screw sleeve, a clamping screw rod and a clamping screwing handle. The middle of the top end of the sleeve frame is communicated with the bottom end of the jacking screw sleeve, the middle of the top end of the vehicle plate is connected with the bottom end of the oil cylinder sleeve frame, a plurality of sets of clamping screw sleeves are evenly arranged in the annular side of the oil cylinder sleeve frame, the inner wall of each set of clamping screw sleeve is in threaded connection with the outer wall of one set of clamping screw rod, and the outer side of each set of clamping screw rod is connected with the middle of the inner side of one set of clamping screwing handle.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinder detection, in particular to a hydraulic oil cylinder pressure testing device. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is smooth, so it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application, and other devices are indispensable.

[0003] Usually, hydraulic cylinders need to be tested for oil leakage during production and use. The prior art CN213899476U discloses a hydraulic cylinder quality testing device, including an oil return pipe, a quick connector, an oil outlet pipe, a quick connector, a gas-liquid booster pump, a first liquid inlet, a filter, a booster pump, a high-pressure ball valve, an oil tank, a pressure-stabilizing tank, a pressure transmitter, a pressure regulating valve and a solenoid valve. After the hydraulic cylinder to be tested is connected to the quick connector of the corresponding oil return pipe and the quick connector of the oil outlet pipe, the gas-liquid booster pump can be started, and the filter on the first liquid inlet filters the hydraulic oil entering the gas-liquid booster pump. , open the high-pressure ball valve to allow the hydraulic oil to be injected from the oil tank into the hydraulic cylinder through the pressure regulating tank. The pressure transmitter on the pressure regulating tank can display the hydraulic oil pressure at any time. Different initial pressures can be set by adjusting the pressure regulating valve 7 according to different models of hydraulic cylinders. When the pressure reaches the initial pressure 30s later, the electromagnetic valve is closed. At this time, the value of the pressure transmitter is collected every second, and finally a curve of pressure change over time is obtained. Based on this, it can be judged whether the hydraulic cylinder has internal leakage, so that the oil leakage detection device is convenient for oil leakage detection of hydraulic cylinder ends of different sizes, thereby improving the use effect of the oil leakage detection device.

[0004] However, the device is limited by the fixation of the hydraulic cylinder, and its operation is inconvenient and its practicality is poor. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a hydraulic cylinder pressure testing device which is provided with a movable body structure and cooperates with a fixing mechanism on the top of the body to transport, detect and fix different hydraulic cylinders, thereby improving practicality.

[0007] (II) Technical solution

[0008] To achieve the above object, the present utility model provides the following technical solutions: A hydraulic cylinder pressure test device, including a pressure test mechanism and a connecting pipe. The connecting pipe is arranged outside the pressure test mechanism. It further includes a sleeve frame, a tightening nut, a tightening screw, a tightening wrench, a mounting frame, a vehicle plate, a steering shaft, a wheel box, a roller, an oil cylinder sleeve frame, a clamping nut, a clamping screw, and a clamping wrench. The middle lower side of the front end of the pressure test mechanism is connected to the rear side of the sleeve frame. The middle part of the top end of the sleeve frame is communicated with the bottom end of the tightening nut. The inner wall of the tightening nut is screwed to the outer wall of the tightening screw. The top end of the tightening screw is connected to the middle part of the bottom end of the tightening wrench. The mounting frame is detachably inserted inside the sleeve frame. The front side of the mounting frame is connected to the middle part of the rear side of the vehicle plate. The four corners of the bottom end of the vehicle plate are respectively rotationally connected to the middle part of the top end of a set of wheel boxes through a set of steering shafts. A set of rollers are respectively rotationally connected inside each set of wheel boxes. The middle part of the top end of the vehicle plate is connected to the bottom end of the oil cylinder sleeve frame. A plurality of sets of clamping nuts are evenly arranged inside the circumferential side of the oil cylinder sleeve frame. The inner wall of each set of clamping nuts is screwed to the outer wall of a set of clamping screws. The outer side of each set of clamping screws is respectively connected to the middle part of the inner side of a set of clamping wrenches.

[0009] Preferably, it further includes brake pads and stepping pieces. A set of brake pads are respectively movably arranged inside each set of wheel boxes. The outer side of each set of brake pads is respectively connected to the inner side of a set of stepping pieces.

[0010] Preferably, it further includes a push handle frame and a push handle rod. The rear side of the top end of the vehicle plate is connected to the bottom end of the push handle frame. The upper side of the inner end of the push handle frame is connected to both ends of the push handle rod.

[0011] Preferably, it further includes a storage groove, a hinge, a cover, and a through groove. The right front side of the top end of the pressure test mechanism is provided with a storage groove. The rear side of the top end of the storage groove is movably connected to the rear end of the cover through a hinge. A through groove is provided in the middle of the left side of the cover.

[0012] Preferably, it further includes a handle frame. The right front side of the top end of the cover is connected to the bottom end of the handle frame.

[0013] Preferably, it further includes a wrench, a movable pin piece, and a fixed pin frame. The inner end of the wrench is rotationally connected to the middle front side of the top end of the cover. The output end of the wrench is connected to one side of the inner end of the movable pin piece. The middle upper side of the front end of the storage groove is connected to the inner end of the fixed pin frame.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a hydraulic cylinder pressure test device, which has the following

[0016] Beneficial effects:

[0017] Four sets of rollers are in contact with the ground at the bottom. The rollers are constrained by the wheel box to roll on the ground and are constrained by the steering shaft for steering. The car body plate can be moved to the position of the hydraulic cylinder. Then, the hydraulic cylinder to be detected is placed in the cylinder sleeve frame. By turning a plurality of clamping knobs, the corresponding clamping screws rotate. The clamping screws are screwed and matched with the clamping nuts, and act inward to clamp the outside of the cylinder. Then, the car body plate is moved continuously. After it reaches the front side of the pressure testing mechanism, the mounting bracket is inserted into the sleeve frame. Then, the tightening knob is turned to make the tightening screw rotate. The tightening screw is screwed and matched with the tightening nut, and acts inward to tighten the upper side of the mounting bracket, making the car body plate stable in front of the pressure testing mechanism. Then, the connecting pipe can be connected to the cylinder for detection. A movable car body structure is provided, which cooperates with the fixing mechanism on the top of the car body, can transport and detect and fix different hydraulic cylinders, and improves the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the axonometric view of the structural schematic diagram of the present invention;

[0019] Figure 2 of the present invention Figure 1 front view;

[0020] Figure 3 of the present invention Figure 1 right view;

[0021] Figure 4 of the present invention Figure 1 bottom view.

[0022] Reference numerals in the drawings: 1, pressure testing mechanism; 2, connecting pipe; 3, sleeve frame; 4, tightening nut; 5, tightening screw; 6, tightening knob; 7, mounting bracket; 8, car body plate; 9, steering shaft; 10, wheel box; 11, roller; 12, cylinder sleeve frame; 13, clamping nut; 14, clamping screw; 15, clamping knob; 16, brake pad; 17, pedal; 18, push handle frame; 19, push handle rod; 20, storage groove; 21, hinge; 22, cover; 23, through groove; 24, handle frame; 25, knob; 26, movable pin piece; 27, fixed pin frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1

[0025] Please refer to Figures 1-4, A hydraulic cylinder pressure test device, including a pressure test mechanism 1 and a connecting pipe 2. The connecting pipe 2 is arranged outside the pressure test mechanism 1. It also includes a sleeve frame 3, a tightening sleeve 4, a tightening screw rod 5, a tightening wrench 6, a mounting frame 7, a vehicle plate 8, a steering shaft 9, a wheel box 10, a roller 11, a cylinder sleeve frame 12, a clamping sleeve 13, a clamping screw rod 14 and a clamping wrench 15. The lower middle side of the front end of the pressure test mechanism 1 is connected to the rear side of the sleeve frame 3. The middle part of the top of the sleeve frame 3 is communicated with the bottom end of the tightening sleeve 4. The inner wall of the tightening sleeve 4 is screwed and connected with the outer wall of the tightening screw rod 5. The top end of the tightening screw rod 5 is connected to the middle part of the bottom end of the tightening wrench 6. The mounting frame 7 is detachably inserted inside the sleeve frame 3. The front side of the mounting frame 7 is connected to the middle part of the rear side of the vehicle plate 8. The four corners of the bottom end of the vehicle plate 8 are respectively rotationally connected to the middle part of the top end of a group of wheel boxes 10 through a group of steering shafts 9. A group of rollers 11 are respectively rotationally connected inside each group of wheel boxes 10. The middle part of the top end of the vehicle plate 8 is connected to the bottom end of the cylinder sleeve frame 12. A plurality of groups of clamping sleeves 13 are evenly arranged inside the circumferential side of the cylinder sleeve frame 12. The inner wall of each group of clamping sleeves 13 is respectively screwed and connected with the outer wall of a group of clamping screw rods 14. The outer sides of each group of clamping screw rods 14 are respectively connected to the middle part of the inner side of a group of clamping wrenches 15. The bottom ends of the four groups of rollers 11 contact the ground. The rollers 11 are constrained by the wheel boxes 10 to roll on the ground and are steered and constrained by the steering shafts 9. The vehicle plate 8 can be moved to the position of the hydraulic cylinder. Then, the hydraulic cylinder to be detected is placed inside the cylinder sleeve frame 12. By turning a plurality of groups of clamping wrenches 15, the corresponding clamping screw rods 14 are rotated. The clamping screw rods 14 act inward on the outside of the cylinder through screw fitting with the clamping sleeves 13 to clamp it. Then, the vehicle plate 8 is continuously moved until it reaches the front side of the pressure test mechanism 1. The mounting frame 7 is inserted into the sleeve frame 3. Then, the tightening wrench 6 is turned to rotate the tightening screw rod 5. The tightening screw rod 5 acts inward on the upper side of the mounting frame 7 to tighten it, making the vehicle plate 8 stable on the front side of the pressure test mechanism 1. Then, the connecting pipe 2 can be connected to the cylinder for detection.

[0026] It also includes brake pads 16 and stepping pieces 17. A group of brake pads 16 are respectively movably arranged inside each group of wheel boxes 10. The outer sides of each group of brake pads 16 are respectively connected to the inner sides of a group of stepping pieces 17. By stepping on the stepping pieces 17, the brake pads 16 can be moved to act on the outer sides of the rollers 11 to stop them, making the device temporarily fixed and improving stability.

[0027] It also includes a push handle frame 18 and a push handle rod 19. The rear side of the top end of the vehicle plate 8 is connected to the bottom end of the push handle frame 18. The upper side of the inner end of the push handle frame 18 is connected to both ends of the push handle rod 19. By holding the push handle rod 19, the vehicle plate 8 can be connected and moved through the push handle frame 18, improving convenience.

[0028] Embodiment 2

[0029] Please refer to Figures 1-4, a hydraulic cylinder pressure test device, including a pressure test mechanism 1 and a connecting pipe 2. The connecting pipe 2 is arranged outside the pressure test mechanism 1. It also includes a sleeve frame 3, a tightening nut 4, a tightening screw 5, a tightening wrench 6, a mounting frame 7, a vehicle plate 8, a steering shaft 9, a wheel box 10, a roller 11, a cylinder sleeve frame 12, a clamping nut 13, a clamping screw 14 and a clamping wrench 15. The middle lower side of the front end of the pressure test mechanism 1 is connected to the rear side of the sleeve frame 3. The middle part of the top of the sleeve frame 3 is communicated with the bottom end of the tightening nut 4. The inner wall of the tightening nut 4 is screwed and connected with the outer wall of the tightening screw 5. The top end of the tightening screw 5 is connected to the middle part of the bottom end of the tightening wrench 6. The mounting frame 7 is detachably inserted inside the sleeve frame 3. The front side of the mounting frame 7 is connected to the middle part of the rear side of the vehicle plate 8. The four corners of the bottom end of the vehicle plate 8 are respectively rotationally connected to the middle part of the top end of a group of wheel boxes 10 through a group of steering shafts 9. A group of rollers 11 are respectively rotationally connected inside each group of wheel boxes 10. The middle part of the top end of the vehicle plate 8 is connected to the bottom end of the cylinder sleeve frame 12. A plurality of groups of clamping nuts 13 are uniformly arranged inside the circumferential side of the cylinder sleeve frame 12. The inner wall of each group of clamping nuts 13 is screwed and connected with the outer wall of a group of clamping screws 14. The outer side of each group of clamping screws 14 is respectively connected to the middle part of the inner side of a group of clamping wrenches 15; the bottom ends of the four groups of rollers 11 contact the ground. The rollers 11 are constrained by the wheel boxes 10 to roll on the ground and are steered and constrained by the steering shafts 9, so that the vehicle plate 8 can be moved to the position of the hydraulic cylinder. Then, the hydraulic cylinder to be detected is placed inside the cylinder sleeve frame 12. By screwing a plurality of groups of clamping wrenches 15, the corresponding clamping screws 14 are rotated. The clamping screws 14 act inwardly on the outside of the cylinder through the screw fit with the clamping nuts 13 to clamp it. Then, the vehicle plate 8 is continuously moved until it reaches the front side of the pressure test mechanism 1. The mounting frame 7 is inserted into the sleeve frame 3. Then, the tightening wrench 6 is screwed to rotate the tightening screw 5. The tightening screw 5 acts inwardly on the upper side of the mounting frame 7 through the screw fit with the tightening nut 4 to tightly hold it, so that the vehicle plate 8 is stable on the front side of the pressure test mechanism 1. Then, the connecting pipe 2 can be connected to the cylinder for detection.

[0030] It also includes a storage groove 20, a hinge 21, a cover 22 and a through groove 23. The right front side of the top end of the pressure test mechanism 1 is provided with a storage groove 20. The rear side of the top end of the storage groove 20 is movably connected to the rear end of the cover 22 through a hinge 21. A through groove 23 is arranged in the middle of the left side of the cover 22; when not in use, the cover 22 can be opened, and the connecting pipe 2 can be stored in the storage groove 20. Then, the cover 22 is closed under the constraint of the hinge 21, so that the connecting pipe 2 passes through the inside of the through groove 23, which is convenient for storage.

[0031] It also includes a handle frame 24. The right front side of the top end of the cover 22 is connected to the bottom end of the handle frame 24; by holding the handle frame 24, the cover 22 can be connected to be opened and closed, improving convenience.

[0032] It further includes a turning handle 25, a movable pin piece 26 and a fixed pin holder 27. The front side of the middle part at the top end of the closing cover 22 is rotatably connected to the inner end of the turning handle 25. The output end of the turning handle 25 is connected to one side of the inner end of the movable pin piece 26. The upper side of the front end of the storage groove 20 is connected to the inner end of the fixed pin holder 27. After the closing cover 22 is closed, by turning the turning handle 25, the movable pin piece 26 can be rotated and inserted into the fixed pin holder 27, so that the closing cover 22 is fixedly closed, improving stability.

[0033] This pressure testing mechanism 1 and the connecting pipe 2 are well-known devices for those skilled in the art directly purchased on the market. Here we only use them without making improvements to their structures and functions, so we will not elaborate on them in detail here.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder pressure test device, comprising a pressure test mechanism (1) and a connecting pipe (2), wherein the connecting pipe (2) is arranged outside the pressure test mechanism (1), and is characterized in that, It further includes a sleeve frame (3), a tightening sleeve (4), a tightening screw rod (5), a tightening wrench (6), a mounting frame (7), a vehicle board (8), a steering shaft (9), a wheel box (10), a roller (11), an oil cylinder sleeve frame (12), a clamping sleeve (13), a clamping screw rod (14) and a clamping wrench (15). The lower middle side of the front end of the pressure testing mechanism (1) is connected to the rear side of the sleeve frame (3). The middle part of the top end of the sleeve frame (3) is communicated with the bottom end of the tightening sleeve (4). The inner wall of the tightening sleeve (4) is screwed and connected with the outer wall of the tightening screw rod (5). The top end of the tightening screw rod (5) is connected to the middle part of the bottom end of the tightening wrench (6). The mounting frame (7) is detachably inserted inside the sleeve frame (3). The front side of the mounting frame (7) is connected to the middle part of the rear side of the vehicle board (8). The four corner sides of the bottom end of the vehicle board (8) are respectively rotationally connected to the middle parts of the top ends of a set of wheel boxes (10) via a set of steering shafts (9). A set of rollers (11) are respectively rotationally connected inside each set of wheel boxes (10). The middle part of the top end of the vehicle board (8) is connected to the bottom end of the oil cylinder sleeve frame (12). A plurality of groups of clamping sleeves (13) are evenly arranged inside the circumferential side of the oil cylinder sleeve frame (12). The inner wall of each group of clamping sleeves (13) is screwed and connected with the outer wall of a group of clamping screw rods (14). The outer sides of each group of clamping screw rods (14) are respectively connected to the middle parts of the inner sides of a group of clamping wrenches (15).

2. The hydraulic cylinder pressure test device according to claim 1, wherein: It further includes brake pads (16) and pedal pads (17). A set of brake pads (16) are respectively movably arranged inside each set of wheel boxes (10). The outer sides of each set of brake pads (16) are respectively connected to the inner sides of a set of pedal pads (17).

3. The hydraulic cylinder pressure test device according to claim 2, characterized in that: It further includes a handle frame (18) and a handle rod (19). The rear side of the top end of the vehicle board (8) is connected to the bottom end of the handle frame (18). The upper side of the inner end of the handle frame (18) is connected to both ends of the handle rod (19).

4. A hydraulic cylinder pressure test device according to claim 3, characterized in that: It further includes a storage groove (20), a hinge (21), a cover (22) and a through groove (23). A storage groove (20) is arranged on the upper right front side of the top end of the pressure testing mechanism (1). The rear side of the top end of the storage groove (20) is movably connected to the rear end of the cover (22) via a hinge (21). A through groove (23) is arranged in the middle of the left side of the cover (22).

5. A hydraulic cylinder pressure test device according to claim 4, characterized in that: It further includes a handle frame (24). The upper right front side of the top end of the cover (22) is connected to the bottom end of the handle frame (24).

6. The hydraulic cylinder pressure test device according to claim 5, characterized in that: It further includes a wrench (25), a movable pin piece (26) and a fixed pin frame (27). The inner end of the wrench (25) is rotationally connected to the upper middle front side of the top end of the cover (22). The output end of the wrench (25) is connected to one side of the inner end of the movable pin piece (26). The upper middle front side of the front end of the storage groove (20) is connected to the inner end of the fixed pin frame (27).

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