High seal drill rig cylinder

Abstract

High sealing drilling machine oil cylinder. It relates to the technical field of oil cylinder. It includes cylinder body and piston rod arranged in the cylinder body, the outer wall of the cylinder body is provided with oil inlet pipe and oil outlet pipe, the bottom of the cylinder body is provided with base, the top of the cylinder body is provided with scraper disc, the scraper disc is annular, the inner wall of the scraper disc is matched with the inner wall of the piston rod, the top of the scraper disc is provided with a plurality of sliding grooves, the sliding grooves are provided with sliding blocks, the outer side of the sliding blocks is provided with arc-shaped plates, the arc-shaped plates are connected with the sliding blocks through connecting rods, the inner wall of the arc-shaped plates can be matched with the outer wall of the piston rod, and the inner wall of the arc-shaped plates is provided with a plurality of bristles. The application can realize the brushing action of the bristles on the piston rod through the pushing action of the arc-shaped plates on the push plate.

Description

Technical Field

[0001] This application relates to the field of hydraulic cylinder technology, specifically to a high-sealing drilling rig hydraulic cylinder. Background Technology

[0002] Hydraulic cylinders, also known as oil cylinders, are the core actuators in drilling equipment that enable key actions and functions of the drilling rig. They convert the hydraulic energy provided by the hydraulic system into powerful linear motion and force, driving the drilling rig to complete various complex tasks, such as precisely controlling drilling pressure and drilling speed.

[0003] Chinese patent document CN2225266U discloses a cylinder body with an anti-leakage component on one side, a pre-fixing component on one side of the anti-leakage component, an anti-detachment component on one side of the cylinder body, and a sealing component on one side of the anti-detachment component. This patent, by incorporating the anti-leakage component and the pre-fixing component, allows for easy connection of the oil pipeline to the oil outlet during use. The oil pipeline is inserted into the oil outlet, and then a reinforcing ring is threaded into the connecting ring. The fixing plate, adjusted by a fixing spring, first presses against the clamping ring of the oil pipeline to pre-fix it. Then, the reinforcing ring is rotated, allowing it to penetrate deeper into the connecting ring and press against the clamping ring, thus fixing the oil pipeline in place. Simultaneously, the clamping ring prevents oil leakage, facilitating the installation of the oil pipeline and providing excellent anti-leakage performance.

[0004] While the aforementioned patent can prevent leakage, the dust prevention between the cylinder and the piston rod is achieved solely through a sealing ring located inside the cylinder. However, the drilling rig operates in harsh environments, and fine sand and gravel adhering to the piston rod can easily damage the sealing ring. Utility Model Content

[0005] In order to overcome the problem that the existing technology cannot pre-treat the sand and gravel on the piston rod, this application provides a high-sealing drilling rig cylinder.

[0006] This application adopts the following technical solution: a high-sealing drilling rig cylinder, including a cylinder body and a piston rod passing through the cylinder body, an oil inlet pipe and an oil outlet pipe are provided on the outer wall of the cylinder body, a base is provided at the bottom of the cylinder body, and a scraper is provided at the top of the cylinder body. The scraper is annular, and the inner wall of the scraper is in contact with the inner wall of the piston rod.

[0007] The top of the scraper is provided with several grooves, and a slider is provided in the groove. An arc-shaped plate is provided on the outside of the slider. The arc-shaped plate and the slider are connected by a connecting rod. The inner wall of the arc-shaped plate can fit against the outer wall of the piston rod. The inner wall of the arc-shaped plate is provided with several bristles.

[0008] Optionally, the inner wall of the scraper is provided with a lubricating coating.

[0009] Optionally, all of the aforementioned grooves point to the axis of the piston rod, the grooves are dovetail-shaped, the outer wall of the slider fits against the inner wall of the groove, one end of the groove communicates with the outer wall of the scraper, and the other end of the groove does not extend to the inner wall of the scraper.

[0010] Optionally, the number of the slides is even, and a push plate is provided on the outer side of every two arc plates. A waist hole is provided on both sides of the push plate, and the connecting rods on the two arc plates are respectively and correspondingly inserted into the two waist holes.

[0011] The top of the scraper is provided with an adjusting rod fixed by a vertical rod, the adjusting rod pointing towards the axis of the piston rod, the middle of the push plate is provided with a through hole, the adjusting rod passes through the through hole, and an adjusting nut is threadedly screwed onto the adjusting rod and located between the vertical rod and the push plate, the adjusting nut being used to push the push plate, and the push plate being used to push the arc-shaped plate.

[0012] Optionally, the push plate is arc-shaped, the waist hole extends along the bending direction of the push plate, and the width of the waist hole is greater than the outer diameter of the connecting rod.

[0013] Optionally, when the brush bristles are away from the piston rod, the two adjacent push plates and the two adjacent arc plates are separated from each other.

[0014] Optionally, a spring is fitted on the connecting rod, one end of the spring is connected to the inner wall of the push plate, and the other end of the spring is connected to the outer wall of the arc-shaped plate.

[0015] Compared with the prior art, this application has the following advantages:

[0016] 1. The push plate is pushed by rotating the adjusting nut, and the push plate pushes the two arc-shaped plates to make the bristles fit with the piston rod. In this way, during the piston rod retraction process, the brushing action of the bristles on the piston rod can achieve the cleaning effect of sand and gravel.

[0017] 2. Through the mutual friction between the lubricating coating on the scraper and the piston rod, the scraper can not only clean the sand and gravel, but also apply lubricating grease to the surface of the piston rod, thus maintaining the piston rod. Attached Figure Description

[0018] Figure 1 This is a schematic perspective view of this application;

[0019] Figure 2 This is a reference diagram showing the assembly state of the scraper, the arc plate, and the push plate;

[0020] Figure 3 This is a reference diagram showing the assembly state of the adjusting rod and the push plate;

[0021] In the diagram: 1. Cylinder block; 11. Oil inlet pipe; 12. Oil outlet pipe; 13. Base; 2. Piston rod; 3. Scraper; 31. Slide groove; 32. Vertical rod; 4. Slider; 40. Connecting rod; 5. Arc plate; 50. Brush bristles; 6. Push plate; 60. Waist hole; 7. Adjusting rod; 8. Adjusting nut; 9. Spring. Detailed Implementation

[0022] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] like Figure 1-3 As shown, the high-sealing drilling rig cylinder includes a cylinder body 1 and a piston rod 2 passing through the cylinder body 1. An oil inlet pipe 11 and an oil outlet pipe 12 are provided on the outer wall of the cylinder body 1. A base 13 is provided at the bottom of the cylinder body 1, and a scraper 3 is provided at the top of the cylinder body 1. The scraper 3 is annular, and its inner wall is in contact with the inner wall of the piston rod 2. Hydraulic oil is supplied to the cylinder body 1 through the oil inlet pipe 11 and discharged to the outside of the cylinder body 1 through the oil outlet pipe 12. This allows the piston rod 2 to extend and retract within the cylinder body 1.

[0024] The top of the scraper 3 is provided with several grooves 31, and a slider 4 is provided in the grooves 31. An arc plate 5 is provided on the outside of the slider 4. The arc plate 5 and the slider 4 are connected by a connecting rod 40. The inner wall of the arc plate 5 can fit against the outer wall of the piston rod 2. The inner wall of the arc plate 5 is provided with several bristles 50. Before the piston rod 2 is retracted, if excessive sand and gravel are found adhering to its surface, the arc plate 5 can be pushed to move closer to the piston rod 2, causing the brush bristles 50 to contact the piston rod 2. In this way, the mutual friction between the brush bristles 50 and the piston rod 2 can achieve a scraping effect on the piston rod 2, thereby preventing the sand and gravel adhering to the surface of the piston rod 2 from being carried into the cylinder 1. Furthermore, after the piston rod 2 has been brushed by the brush bristles 50, it will also come into contact with the scraper 3. The fit between the scraper 3 and the piston rod 2 is even tighter, which can achieve a deep cleaning of the outer wall of the piston rod 2, thereby reliably completing the pretreatment of the piston rod 2 and minimizing the risk of sand and gravel entering the cylinder 1.

[0025] The inner wall of the scraper 3 is provided with a lubricating coating, which is formed by manually applying lubricating grease. In this way, while the scraper 3 is brushing the sand and gravel on the piston rod 2, it can also automatically apply lubricating grease to the surface of the piston rod 2, thereby lubricating and maintaining the piston rod 2.

[0026] Several grooves 31 all point to the axis of the piston rod 2. The grooves 31 are dovetail-shaped. The outer wall of the slider 4 fits against the inner wall of the groove 31 (specifically, the part of the slider 4 located in the groove 31 is in a state of mutual fit with the groove 31). One end of the groove 31 is connected to the outer wall of the scraper 3, and the other end of the groove 31 does not extend to the inner wall of the scraper 3. Through the limiting and guiding effect of the groove 31 on the slider 4, it is ensured that the arc plate 5 can reliably approach or move away from the piston rod 2, thereby ensuring that the bristles 50 on the arc plate 5 can reliably scrape the outer wall of the piston rod 2.

[0027] The number of grooves 31 is even. A push plate 6 is provided on the outer side of every two arc-shaped plates 5. A waist hole 60 is provided on both sides of the push plate 6. The connecting rods 40 on the two arc-shaped plates 5 are respectively and correspondingly inserted into the two waist holes 60. The top of the scraper 3 is provided with an adjusting rod 7 fixed by a vertical rod 32. The adjusting rod 7 points to the axis of the piston rod 2. A through hole is provided in the middle of the push plate 6. The adjusting rod 7 is inserted into the through hole. An adjusting nut 8 is screwed on the adjusting rod 7 between the vertical rod 32 and the push plate 6 through a threaded fit. The adjusting nut 8 is used to push the push plate 6, and the push plate 6 is used to push the arc-shaped plates 5.

[0028] An external thread is provided on the outer wall of the adjusting rod 7, so that the adjusting nut 8 can be screwed onto the adjusting rod 7. When the piston rod 2 needs to be cleaned, rotating the adjusting nut 8 can drive a push plate 6 to move towards the piston rod 2, and an arc plate 5 can simultaneously push two arc plates 5 to move synchronously, effectively improving the pushing efficiency of the arc plate 5. Optimally, the number of slide grooves 31 can be four, corresponding to four arc plates 5 and two push plates 6. In this configuration, only two adjusting nuts 8 are needed to drive four arc plates 5. After the four arc plates 5 are joined together, they can form a ring shape, and at this time all the bristles 50 are in contact with the outer wall of the piston rod 2, effectively increasing the contact area between the bristles 50 and the piston rod 2 and reducing the difficulty of adjustment.

[0029] The push plate 6 is arc-shaped, and the waist hole 60 extends along the bending direction of the push plate 6. The width of the waist hole 60 is greater than the outer diameter of the connecting rod 40. In this way, during the process of the push plate 6 pushing the arc plate 5 to move, the connecting rod 40 and the push plate 6 can generate circumferential movement, thereby ensuring that the arc plate 5 can move along the axis of the corresponding connecting rod 40, thus ensuring that multiple arc plates 5 can be accurately connected on the outside of the piston rod 2.

[0030] When the bristles 50 move away from the piston rod 2, the two adjacent push plates 6 and the two adjacent arc plates 5 are separated from each other. In this way, when the two arc plates 5 gradually approach the piston rod 2, the two arc plates can reliably fit together without squeezing or colliding with each other, ensuring that the arc plates 5 can move back and forth smoothly.

[0031] A spring 9 is fitted onto the connecting rod 40. One end of the spring 9 is connected to the inner wall of the push plate 6, and the other end is connected to the outer wall of the arc-shaped plate 5. The spring 9 does not affect the circumferential movement of the push plate 6 and can reliably control the pushing force applied by the push plate 6 to the arc-shaped plate 5, preventing the brush bristles 50 from being damaged due to excessive contact between them and the piston rod 2. Furthermore, under the action of the spring 9, the arc-shaped plate 5 can adaptively and dynamically adjust, ensuring that when large amounts of sand and gravel adhere to the surface of the piston rod 2, the arc-shaped plate 5 can automatically move away from the piston rod 2, thereby increasing the distance between the arc-shaped plate 5 and the piston rod 2 and preventing the arc-shaped plate 5 from colliding with the sand and gravel and being damaged.

[0032] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A high-sealing drilling rig cylinder, comprising a cylinder body (1) and a piston rod (2) passing through the cylinder body (1), wherein an oil inlet pipe (11) and an oil outlet pipe (12) are provided on the outer wall of the cylinder body (1), and a base (13) is provided at the bottom of the cylinder body (1), characterized in that, The top of the cylinder (1) is provided with a scraper (3), which is annular and the inner wall of the scraper (3) is in contact with the inner wall of the piston rod (2). The top of the scraper (3) is provided with several grooves (31), and a slider (4) is provided in the groove (31). An arc plate (5) is provided on the outside of the slider (4). The arc plate (5) and the slider (4) are connected by a connecting rod (40). The inner wall of the arc plate (5) can fit against the outer wall of the piston rod (2). The inner wall of the arc plate (5) is provided with several bristles (50).

2. The high-sealing drilling rig cylinder according to claim 1, characterized in that, The inner wall of the scraper (3) is provided with a lubricating coating.

3. The high-sealing drilling rig cylinder according to claim 1, characterized in that, Several of the aforementioned grooves (31) all point to the axis of the piston rod (2). The grooves (31) are dovetail-shaped. The outer wall of the slider (4) fits against the inner wall of the groove (31). One end of the groove (31) is connected to the outer wall of the scraper (3), and the other end of the groove (31) does not extend to the inner wall of the scraper (3).

4. The high-sealing drilling rig cylinder according to claim 2, characterized in that, The number of the slide grooves (31) is even. A push plate (6) is provided on the outer side of each pair of arc plates (5). A waist hole (60) is provided on both sides of the push plate (6). The connecting rods (40) on the two arc plates (5) are respectively and correspondingly inserted into the two waist holes (60). The top of the scraper (3) is provided with an adjusting rod (7) fixed by a vertical rod (32). The adjusting rod (7) points to the axis of the piston rod (2). The middle part of the push plate (6) is provided with a through hole. The adjusting rod (7) passes through the through hole. An adjusting nut (8) is screwed on the adjusting rod (7) and located between the vertical rod (32) and the push plate (6) by a threaded fit. The adjusting nut (8) is used to push the push plate (6). The push plate (6) is used to push the arc plate (5).

5. The high-sealing drilling rig cylinder according to claim 4, characterized in that, The push plate (6) is arc-shaped, and the waist hole (60) extends along the bending direction of the push plate (6). The width of the waist hole (60) is greater than the outer diameter of the connecting rod (40).

6. The high-sealing drilling rig cylinder according to claim 4, characterized in that, When the bristles (50) move away from the piston rod (2), the two adjacent push plates (6) and the two adjacent arc plates (5) are separated from each other.

7. The high-sealing drilling rig cylinder according to claim 5, characterized in that, A spring (9) is fitted on the connecting rod (40). One end of the spring (9) is connected to the inner wall of the push plate (6), and the other end of the spring (9) is connected to the outer wall of the arc plate (5).

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