Hydraulic cylinder for pile hammer

Abstract

The utility model relates to the technical field of hydraulic cylinders, and discloses a hydraulic cylinder for a pile hammer, which comprises a main body, an oil inlet is arranged at the top of the main body, a two-way oil pump is fixedly arranged at the top of the main body, the output end of the two-way oil pump is communicated with the oil inlet, and an oil inlet pipe is fixedly arranged at the input end of the top of the two-way oil pump. Copper pipes are arranged on the two sides of the main body, a piston rod is movably installed in the main body and penetrates out of the bottom of the main body, a connecting block is fixedly installed at the bottom of the main body, and a cleaning ring is fixedly installed at the bottom of the connecting block. Hydraulic oil can be pumped by starting the two-way oil pump, when the hydraulic oil passes through the copper pipe, the temperature of the hydraulic oil can be conducted to the copper pipe, and the copper pipe can be cooled through the cooling fins on the outer side of the copper pipe, so that the flowing hydraulic oil is cooled, the situation that the oxidation and degradation process of the hydraulic oil is accelerated due to high temperature is avoided, and the service life of the hydraulic oil is prolonged. And the service life is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder for a pile hammer. Background Art

[0002] Hydraulic pile driver is one of the necessary equipment for road construction companies and engineering teams of all sizes in the installation, construction and maintenance of highway guardrails. This equipment plays an extremely important role in the installation of highway guardrails in my country and even abroad.

[0003] An existing hydraulic cylinder for a hydraulic pile hammer (Announcement No.: CN220118425U) has at least the following disadvantages: During use, the piston of the hydraulic cylinder will continuously rub against the cylinder wall to generate heat, and then the hydraulic oil will carry away the heat when it flows through. During long-term operation, the hydraulic oil will continue to circulate and be heated, which will accelerate the oxidation and deterioration process of the hydraulic oil and shorten its service life. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a hydraulic cylinder for a pile hammer.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A hydraulic cylinder for a pile hammer comprises a main body, an oil inlet is provided on the top of the main body, a two-way oil pump is fixedly installed on the top of the main body, the output end of the two-way oil pump is connected to the oil inlet, an oil inlet pipe is fixedly installed on the top input end of the two-way oil pump, copper tubes are provided on both sides of the main body, a piston rod is movably installed in the main body, the piston rod passes through the bottom of the main body, a connecting block is fixedly installed on the bottom of the connecting block, and a cleaning ring is fixedly installed on the bottom of the connecting block.

[0007] As a further solution of the present invention, the top end of the copper tube is fixedly connected to the side wall of the oil inlet pipe, a connecting port is opened on the lower end of the side wall of the main body, the connecting port is communicated with the interior of the main body, the tail end of the copper tube is fixedly connected to the connecting port, and heat sinks are evenly and equidistantly fixedly installed on the outside of the copper tube.

[0008] As a further solution of the present invention, a movable groove is provided on the connecting block, a rotating ring is movably installed in the movable groove, and teeth are evenly spaced on the side wall of the rotating ring. A fixed block is fixedly installed on the side wall of the connecting block, and the fixed block is arranged at a position corresponding to the rotating ring. A driving motor is fixedly installed above the fixed block, and a gear is provided below the fixed block. The output end of the driving motor penetrates the fixed block and is fixedly connected to the gear, and the gear is engaged with the teeth on the rotating ring.

[0009] As a further solution of the present invention, a piston block is movably installed inside the main body, the bottom of the piston block is fixedly connected to the piston rod, a fixing groove is opened at the bottom end of the side wall of the main body, a sealing gasket is fixedly installed in the fixing groove, and the inner ring of the sealing gasket is fitted on the side wall of the piston rod.

[0010] As a further solution of the present invention, a scraper is fixedly mounted on the bottom end of the rotating ring, and the scraper is attached to the outer side of the connecting block.

[0011] As a further solution of the present invention, a fixing frame is fixedly installed on the side wall of the main body, and a screw is movably installed at the tail of the fixing frame.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the utility model, the hydraulic oil can be pumped by starting the bidirectional oil pump. When the hydraulic oil passes through the copper tube, the temperature of the hydraulic oil will be transmitted to the copper tube, and then the copper tube can be cooled by the heat sink on the outside of the copper tube, thereby achieving the effect of cooling the flowing hydraulic oil, avoiding the high temperature from accelerating the oxidation and deterioration process of the hydraulic oil and reducing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder for a pile hammer proposed in the utility model;

[0015] Figure 2 This is a schematic diagram of the partial internal structure of a hydraulic cylinder for a pile hammer proposed in the utility model;

[0016] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 4 The utility model is a schematic diagram of the parts structure of a hydraulic cylinder for a pile hammer.

[0018] In the figure: 1. Main body; 2. Bidirectional oil pump; 3. Oil inlet pipe; 4. Copper tube; 5. Heat sink; 6. Fixing bracket; 7. Screw; 8. Piston rod; 9. Connecting block; 10. Cleaning ring; 11. Scraper; 12. Fixing block; 13. Drive motor; 14. Oil inlet; 15. Piston block; 16. Sealing gasket; 17. Connecting port; 18. Fixing groove; 19. Gear; 20. Rotating ring; 21. Tooth groove; 22. Movable groove. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] Reference Figure 1 - Figure 4 A hydraulic cylinder for a pile hammer includes a main body 1, an oil inlet 14 is opened on the top of the main body 1, a two-way oil pump 2 is fixedly installed on the top of the main body 1, the output end of the two-way oil pump 2 is connected to the oil inlet 14, and an oil inlet pipe 3 is fixedly installed on the top input end of the two-way oil pump 2. Copper tubes 4 are provided on both sides of the main body 1, a piston rod 8 is movably installed in the main body 1, and the piston rod 8 passes through the bottom of the main body 1. A connecting block 9 is fixedly installed on the bottom of the main body 1, and a cleaning ring 10 is fixedly installed on the bottom of the connecting block 9.

[0023] In this embodiment, the top end of the copper tube 4 is fixedly connected to the side wall of the oil inlet pipe 3, and a connecting port 17 is opened on the lower end of the side wall of the main body 1. The connecting port 17 is communicated with the interior of the main body 1. The tail end of the copper tube 4 is fixedly connected to the connecting port 17, and heat sinks 5 are evenly and evenly fixedly installed on the outside of the copper tube 4. When the hydraulic oil passes through the copper tube 4, the temperature of the hydraulic oil will be transmitted to the copper tube 4, and then the heat sink 5 on the outside of the copper tube 4 can cool the copper tube 4, thereby achieving the purpose of cooling the hydraulic oil flowing through.

[0024] In this embodiment, a movable groove 22 is provided on the connecting block 9, and a rotating ring 20 is movably installed in the movable groove 22. Tooth grooves 21 are evenly spaced on the side walls of the rotating ring 20. A fixed block 12 is fixedly installed on the side wall of the connecting block 9. The fixed block 12 is arranged corresponding to the position of the rotating ring 20. A drive motor 13 is fixedly installed above the fixed block 12, and a gear 19 is provided below the fixed block 12. The output end of the drive motor 13 penetrates the fixed block 12 and is fixedly connected to the gear 19. The gear 19 is engaged with the tooth groove 21 on the rotating ring 20. A scraper 11 is fixedly installed on the bottom end of the rotating ring 20. The scraper 11 is attached to the outer side of the connecting block 9. When the drive motor 13 is started, the fixed block 12 is rotated, and the rotating ring 20 is driven to rotate through the fixed block 12. The scraper 11 on the rotating ring 20 cleans the surface of the connecting block 9 and automatically scrapes off the putty mixture on the connecting block 9.

[0025] In this embodiment, a piston block 15 is movably installed inside the main body 1, and the bottom of the piston block 15 is fixedly connected to the piston rod 8. A fixing groove 18 is opened at the bottom end of the side wall of the main body 1, and a sealing gasket 16 is fixedly installed in the fixing groove 18. The inner ring of the sealing gasket 16 fits on the side wall of the piston rod 8.

[0026] In this embodiment, a fixing bracket 6 is fixedly installed on the side wall of the main body 1, and a screw 7 is movably installed at the tail of the fixing bracket 6 to fix the main body 1 to the fixing bracket 6. Then, the fixing bracket 6 can be quickly fixed to a suitable position through the screw 7.

[0027] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when in use, the main body 1 is fixed to the fixing frame 6, and then the fixing frame 6 can be quickly fixed to a suitable position by means of screws 7, and the oil inlet pipe 3 can be extracted by starting the two-way oil pump 2, and the copper tube 4 connected to the oil inlet pipe 3 can extract the hydraulic oil under the piston block 15 into the oil inlet pipe 3, and then the hydraulic oil will be pressurized and transported to the top of the piston block 15 through the two-way oil pump 2. At this time, the piston block 15 will drive the piston rod 8 to move downward, and then the two-way oil pump 2 is started to pump in reverse, and the hydraulic oil at the top of the piston block 15 will be pressurized into the oil inlet pipe 3 through the two-way oil pump 2, and then transported to the bottom of the piston block 15 through the copper tube 4 on the oil inlet pipe 3. At this time, the piston block 15 will drive the piston rod 8 to move upward, thereby completing a set of hammering processes. When the hydraulic oil passes through the copper tube 4, the temperature of the hydraulic oil will be transferred to the copper tube 4. The copper tube 4 can be cooled by the heat sink 5 on the outside of the copper tube 4, thereby cooling the hydraulic oil flowing through it, avoiding high temperature from accelerating the oxidation and deterioration of the hydraulic oil and reducing its service life. When the piston rod 8 contracts, the cleaning ring 10 at the bottom of the connecting block 9 can clean the surface of the piston rod 8. The cleaning ring 10 will scrape off the putty mixture adhering to the surface of the piston rod 8 to avoid the dust on the surface from mixing with the hydraulic oil when the piston rod 8 is retracted into the main body 1, and the impurities in the hydraulic oil increase, resulting in a reduced service life. The putty mixture is sticky, and the cleaning ring 10 will continue to accumulate and move to the connecting block 9 after scraping. Then the drive motor 13 is started to rotate with the fixed block 12, and the rotating ring 20 is driven to rotate by the fixed block 12. The scraper 11 on the rotating ring 20 will clean the surface of the connecting block 9 and automatically scrape off the putty mixture on the connecting block 9.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder for a pile hammer, comprising a main body (1), characterized in that: An oil inlet (14) is provided on the top of the main body (1), a two-way oil pump (2) is fixedly installed on the top of the main body (1), the output end of the two-way oil pump (2) is communicated with the oil inlet (14), an oil inlet pipe (3) is fixedly installed on the top input end of the two-way oil pump (2), copper tubes (4) are provided on both sides of the main body (1), a piston rod (8) is movably installed in the main body (1), the piston rod (8) passes through the bottom of the main body (1), a connecting block (9) is fixedly installed on the bottom of the main body (1), and a cleaning ring (10) is fixedly installed on the bottom of the connecting block (9).

2. A hydraulic cylinder for a pile hammer according to claim 1, characterized in that: The top end of the copper tube (4) is fixedly connected to the side wall of the oil inlet pipe (3); a connection port (17) is provided on the lower end of the side wall of the main body (1); the connection port (17) is communicated with the interior of the main body (1); the tail end of the copper tube (4) is fixedly connected to the connection port (17); and heat sinks (5) are fixedly installed on the outer side of the copper tube (4) at equal intervals.

3. The hydraulic cylinder for a pile hammer according to claim 1, characterized in that: The connecting block (9) is provided with a movable groove (22), a rotating ring (20) is movably installed in the movable groove (22), and tooth grooves (21) are evenly and equidistantly provided on the side wall of the rotating ring (20). A fixed block (12) is fixedly installed on the side wall of the connecting block (9), and the fixed block (12) is arranged at a position corresponding to the rotating ring (20). A driving motor (13) is fixedly installed above the fixed block (12), and a gear (19) is arranged below the fixed block (12). The output end of the driving motor (13) penetrates the fixed block (12) and is fixedly connected to the gear (19), and the gear (19) is meshed with the tooth groove (21) on the rotating ring (20).

4. The hydraulic cylinder for a pile hammer according to claim 1, characterized in that: A piston block (15) is movably installed inside the main body (1), and the bottom of the piston block (15) is fixedly connected to the piston rod (8). A fixing groove (18) is opened at the bottom end of the side wall of the main body (1), and a sealing gasket (16) is fixedly installed in the fixing groove (18). The inner ring of the sealing gasket (16) is fitted on the side wall of the piston rod (8).

5. The hydraulic cylinder for a pile hammer according to claim 3, characterized in that: A scraper (11) is fixedly mounted on the bottom end of the rotating ring (20), and the scraper (11) is attached to the outer side of the connecting block (9).

6. The hydraulic cylinder for a pile hammer according to claim 1, characterized in that: A fixing frame (6) is fixedly mounted on the side wall of the main body (1), and a screw (7) is movably mounted on the tail of the fixing frame (6).

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