Oil injection device for hydraulic cylinder treatment

Abstract

The utility model discloses an oiling device for processing a hydraulic cylinder, which relates to the field of hydraulic oil injection and comprises a base, a clamping cavity is arranged in the middle of the base, a lifting mechanism extending to the position above the base is mounted in an inner cavity of the clamping cavity, a pressing plate is connected to the outer wall of the lifting mechanism, an oiling mechanism is mounted below the pressing plate, and the oiling mechanism is connected with the clamping cavity. The input end of the oil injection mechanism is connected with an oil inlet pipe, the output end of the oil injection mechanism is connected with an oil conveying pipe, the input end of the oil inlet pipe and the output end of the oil conveying pipe are each rotationally provided with a connector, and an exhaust mechanism is installed on the outer wall of the oil conveying pipe. Through the arrangement of the exhaust mechanism, air exhaust operation can be carried out in the early stage of oil injection, and therefore air is prevented from being injected into a cylinder barrel of the hydraulic cylinder.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic oil injection, in particular to an oil injection device for hydraulic cylinder processing. Background Art

[0002] During the long-term use of the hydraulic cylinder, the lubricating oil therein gradually contains impurities, so it needs to be replaced regularly. In the prior art, a lubricating oil injection machine is generally used to inject the lubricating oil.

[0003] In the prior art, when the oil injection machine is not in use, air will enter the oil delivery pipe and the oil outlet pipe. Therefore, when injecting oil, some air will enter the hydraulic cylinder in the early stage of oil injection, resulting in the failure to fill the hydraulic cylinder with sufficient hydraulic oil. Utility Model Content

[0004] The purpose of the utility model is to provide an oil injection device for hydraulic cylinder processing in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil injection device for hydraulic cylinder processing, comprising a base, a clamping cavity is opened in the middle of the base, the inner cavity of the clamping cavity is equipped with a lifting mechanism extending to the top of the base, the outer wall of the lifting mechanism is connected to a pressure plate, an oil injection mechanism is installed under the pressure plate, the input end of the oil injection mechanism is connected to an oil inlet pipe, the output end of the oil injection mechanism is connected to an oil delivery pipe, the input end of the oil inlet pipe and the output end of the oil delivery pipe are both rotatably equipped with a connector, and the outer wall of the oil delivery pipe is equipped with an exhaust mechanism.

[0006] As a further solution of the utility model: the lifting mechanism includes a forward and reverse motor installed on the top of the inner wall of the clamping cavity, the output shaft of the forward and reverse motor passes through the top of the base and is connected to a screw through a coupling, the top of the base is fixedly connected to a guide column symmetrically arranged with the screw, the outer wall of the screw is threadedly connected to a pressure plate, and the pressure plate is slidably connected to the guide column.

[0007] As a further solution of the utility model: the oil injection mechanism includes a lifting rod fixedly connected to the center of the bottom end of the pressure plate, and the bottom end of the lifting rod is integrally formed with a piston plate;

[0008] The oil filling mechanism includes an oil filling cylinder, the lifting rod is slidably connected to the piston plate and the outer wall of the lifting rod, the top of the base is fixedly connected to a fixing frame fixedly connected to the outer wall of the oil filling cylinder, the input end of the lifting rod is connected to the output end of the oil inlet pipe through a No. 2 connecting pipe, the output end of the lifting rod is connected to the input end of the oil delivery pipe through a No. 1 connecting pipe, and the No. 1 connecting pipe and the No. 2 connecting pipe are both installed with a one-way mechanism.

[0009] As a further solution of the utility model: the one-way mechanism includes a fixed rubber sealing pad and the support seat, a sliding shaft is connected to the center of the support seat for sliding up and down, a sealing ball is fixedly connected to the other end of the sliding shaft, the outer periphery of the sealing ball coincides with the inner periphery of the rubber sealing pad, a spring is connected between the sealing ball and the center of the support seat, and the lifting rod and the one-way mechanism inside the No. 1 connecting tube are arranged in opposite states.

[0010] As a further solution of the utility model: the exhaust mechanism includes an exhaust pipe fixedly connected to the outer wall of the oil pipeline, a No. 1 manual valve is installed on the exhaust pipe, and a No. 2 manual valve is installed on the oil pipeline. The No. 2 manual valve is closer to the output end of the oil pipeline than the No. 1 manual valve.

[0011] As a further solution of the utility model: an internal thread is provided on the inner circumference of the connecting head, and the connecting head is detachably connected to the oil inlet of the hydraulic cylinder via the thread.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting up the exhaust mechanism, air can be discharged in the early stage of oil filling, thereby preventing air from being injected into the cylinder barrel of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the one-way mechanism structure inside the No. 1 connecting pipe of the utility model;

[0016] Figure 3 This is a schematic diagram of the one-way mechanism structure inside the No. 2 connecting pipe of the utility model;

[0017] Figure 4 This is a schematic diagram of the rotation installation of the connector of the utility model;

[0018] Figure 5 It is a schematic diagram of the internal structure of the oil injection mechanism of the utility model.

[0019] In the figure: 1. base; 2. forward and reverse motor; 3. fixing frame; 4. screw; 5. guide column; 6. oil filling cylinder; 7. pressure plate; 8. lifting rod; 9. No. 1 connecting pipe; 10. No. 2 connecting pipe; 11. clamping chamber; 12. oil delivery pipe; 13. oil inlet pipe; 14. connector; 15. exhaust pipe; 16. No. 1 manual valve; 17. No. 2 manual valve; 18. rubber sealing pad; 19. sealing ball; 20. spring; 21. sliding shaft; 22. support seat; 23. piston plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 to Figure 5 In an embodiment of the utility model, an oil injection device for hydraulic cylinder processing includes a base 1, a clamping cavity 11 is opened in the middle of the base 1, and the inner cavity of the clamping cavity 11 is installed with a lifting mechanism extending to the top of the base 1, the outer wall of the lifting mechanism is connected with a pressure plate 7, and an oil injection mechanism is installed below the pressure plate 7, the input end of the oil injection mechanism is connected with an oil inlet pipe 13, and the output end of the oil injection mechanism is connected with an oil delivery pipe 12, the input end of the oil inlet pipe 13 and the output end of the oil delivery pipe 12 are both rotatably installed with a connector 14, and the outer wall of the oil delivery pipe 12 is installed with an exhaust mechanism.

[0022] In this embodiment: first, the two connectors 14 are respectively connected to the lubricating oil tank, and the other connector 14 is connected to the oil inlet of the hydraulic cylinder. At this time, the lifting mechanism is started, and the lifting mechanism drives the oil filling mechanism to perform the oil filling operation. In the early stage, the air in the oil delivery pipe 12 and the oil inlet pipe 13 is discharged through the exhaust mechanism. After the gas is discharged, the oil filling mechanism is driven by the lifting mechanism to fill the hydraulic cylinder with oil. This can effectively avoid injecting air into the cylinder barrel of the hydraulic cylinder during oil filling.

[0023] Please refer to Figure 1 The lifting mechanism includes a forward and reverse motor 2 installed on the top of the inner wall of the clamping cavity 11. The output shaft of the forward and reverse motor 2 passes through the top of the base 1 and is connected to a screw 4 through a coupling. The top of the base 1 is fixedly connected to a guide column 5 symmetrically arranged with the screw 4. The outer wall of the screw 4 is threadedly connected to a pressure plate 7, and the pressure plate 7 is slidably connected to the guide column 5.

[0024] In this embodiment: by starting the forward and reverse motor 2, the forward and reverse motor 2 drives the screw 4 to rotate, at this time the pressure plate 7 moves up and down under the action of its internal thread and slides with the guide column 5, and by controlling the running direction of the forward and reverse motor 2, the pressure plate 7 can move upward or downward.

[0025] Please refer to Figure 2 and Figure 5The oil injection mechanism includes a lifting rod 8 fixedly connected to the center of the bottom end of the pressure plate 7, and a piston plate 23 is integrally formed at the bottom end of the lifting rod 8; the oil injection mechanism includes a lifting rod 8 slidingly connected with the piston plate 23 and the outer wall of the lifting rod 8 through the oil injection cylinder 6, and the top of the base 1 is fixedly connected with a fixing frame 3 fixedly connected to the outer wall of the oil injection cylinder 6, the input end of the lifting rod 8 is connected to the output end of the oil inlet pipe 13 through the No. 2 connecting pipe 10, and the output end of the lifting rod 8 is connected to the input end of the oil delivery pipe 12 through the No. 1 connecting pipe 9, and the No. 1 connecting pipe 9 and the No. 2 connecting pipe 10 are both installed with a one-way mechanism.

[0026] In this embodiment: when the pressure plate 7 moves upward, the pressure plate 7 drives the piston plate 23 to move upward on the inner wall of the oil filling cylinder 6 through the lifting rod 8. The suction force generated by the upward movement of the piston plate 23 draws the hydraulic oil into the oil filling cylinder 6 through the oil inlet pipe 13 and the No. 2 connecting pipe 10. Then, the pressure plate 7 moving downward drives the piston plate 23 to move downward on the inner wall of the oil filling cylinder 6. The downward moving piston plate 23 presses the hydraulic oil in the oil filling cylinder 6 into the oil delivery pipe 12 through the No. 1 connecting pipe 9.

[0027] Please refer to Figure 2 and Figure 3 The one-way mechanism includes a fixed rubber sealing pad 18 and a support seat 22. A sliding shaft 21 is connected to the center of the support seat 22 for sliding up and down movement. A sealing ball 19 is fixedly connected to the other end of the sliding shaft 21. The outer periphery of the sealing ball 19 coincides with the inner periphery of the rubber sealing pad 18. A spring 20 is connected between the sealing ball 19 and the center of the support seat 22. The lifting rod 8 and the one-way mechanism inside the No. 1 connecting tube 9 are arranged in opposite states.

[0028] In this embodiment: when the piston plate 23 moves upward, the sealing ball 19 in the second connecting pipe 10 moves upward due to the adsorption force, and the sliding shaft 21 and the support seat 22 slide relative to each other and compress the spring 20. At this time, the sealing ball 19 separates from the rubber sealing pad 18, and the lubricating oil can be sucked into the oil filling cylinder 6;

[0029] When the piston plate 23 moves downward, the sealing ball 19 in the No. 1 connecting pipe 9 moves downward under the downward pressure. At this time, the sliding shaft 21 and the support seat 22 slide relative to each other and compress the spring 20. At this time, the sealing ball 19 and the rubber sealing pad 18 are separated, and the lubricating oil can be pressed into the oil pipe 12.

[0030] Please refer to Figure 1 The exhaust mechanism includes an exhaust pipe 15 fixedly connected to the outer wall of the oil pipeline 12, a No. 1 manual valve 16 is installed on the exhaust pipe 15, and a No. 2 manual valve 17 is installed on the oil pipeline 12. The No. 2 manual valve 17 is closer to the output end of the oil pipeline 12 than the No. 1 manual valve 16.

[0031] In this embodiment: at the early stage of the oil injection operation, the No. 1 manual valve 16 is opened and the No. 2 manual valve 17 is closed. At this time, the lubricating oil mixed with a large amount of air or the air is discharged from the exhaust pipe 15 until the lubricating oil is discharged from the exhaust pipe 15. At this time, the No. 1 manual valve 16 is closed again, and the No. 2 manual valve 17 is opened, and the lubricating oil can be injected into the hydraulic cylinder.

[0032] Please refer to Figure 4 The inner circumference of the connector 14 is provided with an internal thread, and the connector 14 is detachably connected to the oil inlet of the hydraulic cylinder through threads.

[0033] In this embodiment: when the connector 14 is connected to the oil inlet of the hydraulic cylinder or the oil outlet of the hydraulic oil tank, by rotating the connector 14, the connector 14 and the oil inlet pipe 12 or the oil delivery pipe 13 rotate relative to each other until the connector 14 is fully connected.

[0034] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oil injection device for hydraulic cylinder treatment, comprising a base (1), wherein a clamping cavity (11) is provided in the middle of the base (1), characterized in that: The inner cavity of the clamping cavity (11) is provided with a lifting mechanism extending to the top of the base (1); the outer wall of the lifting mechanism is connected to a pressure plate (7); an oil injection mechanism is installed below the pressure plate (7); the input end of the oil injection mechanism is connected to an oil inlet pipe (13); the output end of the oil injection mechanism is connected to an oil delivery pipe (12); the input end of the oil inlet pipe (13) and the output end of the oil delivery pipe (12) are both rotatably provided with a connector (14); and the outer wall of the oil delivery pipe (12) is provided with an exhaust mechanism.

2. The oil injection device for hydraulic cylinder processing according to claim 1, characterized in that: The lifting mechanism comprises a forward and reverse motor (2) mounted on the top of the inner wall of the clamping cavity (11); the output shaft of the forward and reverse motor (2) passes through the top of the base (1) and is connected to a screw (4) via a coupling; the top of the base (1) is fixedly connected to a guide column (5) symmetrically arranged with the screw (4); the outer wall of the screw (4) is threadedly connected to a pressure plate (7); and the pressure plate (7) is slidably connected to the guide column (5).

3. The oil injection device for hydraulic cylinder processing according to claim 2, characterized in that: The oil injection mechanism comprises a lifting rod (8) fixedly connected to the center of the bottom end of the pressure plate (7), and a piston plate (23) is integrally formed at the bottom end of the lifting rod (8); The oil injection mechanism comprises an oil injection cylinder (6), a lifting rod (8) and a piston plate (23), and an outer wall of the lifting rod (8) being slidably connected, the top end of the base (1) being fixedly connected to a fixing frame (3) fixedly connected to the outer wall of the oil injection cylinder (6), the input end of the lifting rod (8) being connected to the output end of the oil inlet pipe (13) via a No. 2 connecting pipe (10), the output end of the lifting rod (8) being connected to the input end of the oil delivery pipe (12) via a No. 1 connecting pipe (9), and a one-way mechanism being installed inside the No. 1 connecting pipe (9) and the No. 2 connecting pipe (10).

4. The oil injection device for hydraulic cylinder processing according to claim 3, characterized in that: The one-way mechanism comprises a fixed rubber sealing pad (18) and a support seat (22); a sliding shaft (21) is slidably connected to the center of the support seat (22) in an up-and-down manner; a sealing ball (19) is fixedly connected to the other end of the sliding shaft (21); the outer periphery of the sealing ball (19) matches the inner periphery of the rubber sealing pad (18); a spring (20) is connected between the sealing ball (19) and the center of the support seat (22); the lifting rod (8) and the one-way mechanism inside the No. 1 connecting pipe (9) are arranged in opposite states.

5. The oil injection device for hydraulic cylinder processing according to claim 3, characterized in that: The exhaust mechanism comprises an exhaust pipe (15) fixedly connected to the outer wall of the oil pipeline (12), a No. 1 manual valve (16) being installed on the exhaust pipe (15), and a No. 2 manual valve (17) being installed on the oil pipeline (12), wherein the No. 2 manual valve (17) is closer to the output end of the oil pipeline (12) than the No. 1 manual valve (16).

6. The oil injection device for hydraulic cylinder processing according to claim 1, characterized in that: An internal thread is provided on the inner circumference of the connecting head (14), and the connecting head (14) is detachably connected to the oil inlet of the hydraulic cylinder via the thread.

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