A rotary joint which can automatically compensate for lubricating grease

Abstract

The utility model relates to steel plant hot rolling equipment technical field, and disclose a kind of rotary joint of automatic compensation lubricating grease, solve the problem of adding lubricating grease between current rotary joint and expansion and contraction oil cylinder, it includes expansion and contraction oil cylinder and rotary joint main body, expansion and contraction oil cylinder is equipped with adding mechanism between rotary joint main body, adding mechanism includes the hollow ring between expansion and contraction oil cylinder and rotary joint main body, the outside fixed connection of hollow ring has oil pipe, the end of oil pipe away from hollow ring is equipped with sealing plug, the inside fixed connection of hollow ring has concave ring, multiple oil injection ports are equiangularly equipped on concave ring, the outside fixed connection of hollow ring has air bucket;The utility model, through the cooperation between booster pipe, sealing ring, side ring, positioning plate and sleeve ring, lubricating grease is discharged from each oil injection port under the action of pressure, so as to be convenient for adding lubricating grease between expansion and contraction oil cylinder and rotary joint main body quickly.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot rolling equipment in steel plants, specifically a rotary joint that can automatically compensate for lubricating grease. Background Technology

[0002] Rotary joints, as a type of connecting and sealing device that enables stable transmission of fluid media between fixed pipelines and rotating or reciprocating equipment, are widely used in the industrial field. In hot rolling equipment in steel plants, rotary joints play a crucial role in accurately delivering key media such as hydraulic oil, lubricating grease, and compressed air to operating components, ensuring the normal operation of the equipment. Their working principle is based on a precise mechanical structure design, which ensures the independent transmission of different media in the rotating state through sealing components, avoiding leakage and mixing, while meeting the stringent requirements of the equipment under high speed and heavy load conditions.

[0003] Under the existing technology system, there are significant drawbacks in the grease addition process for the coordinated operation of rotary joints and expansion cylinders in hot rolling equipment of steel plants. The working environment of hot rolling equipment is harsh, with high temperature, high dust and strong vibration making the spatial layout between rotary joints and expansion cylinders compact and complex. In the traditional design, the grease addition port is hidden, making it difficult for maintenance personnel to access, which increases the difficulty of operation and time cost. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a rotary joint that can automatically compensate for lubricating grease, which effectively solves the problem that it is currently inconvenient to add lubricating grease between the rotary joint and the expansion cylinder.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotary joint that can automatically compensate for lubricating grease, comprising an expansion cylinder and a rotary joint body, wherein an adding mechanism is provided between the expansion cylinder and the rotary joint body; The adding mechanism includes a hollow ring located between the expansion cylinder and the rotary joint body. An oil pipe is fixedly connected to the outer side of the hollow ring, and a sealing plug is provided at the end of the oil pipe away from the hollow ring. A concave ring is fixedly connected to the inner side of the hollow ring, and multiple oil injection ports are provided at equal angles on the concave ring. An air bucket is fixedly connected to the outer side of the hollow ring, and a side ring is fixedly connected to the end of the air bucket away from the hollow ring. A pressure boosting pipe is provided on the side of the side ring away from the air bucket.

[0006] Preferably, a sealing ring is fixedly connected to the side of the side ring away from the air bucket, and one end of the pressurization pipe is in contact with the sealing ring.

[0007] Preferably, a positioning plate is fixedly connected to the side of the side ring away from the air bucket, and a collar is fixedly sleeved on the outside of the pressurization pipe, with the collar movably sleeved on the outside of the positioning plate.

[0008] Preferably, a round rod is fixedly connected to the outer side of the positioning plate, and two sliding plates are symmetrically and movably sleeved on the outer side of the round rod. Side rods are fixedly connected to the sides of the two sliding plates that are close to each other.

[0009] Preferably, the outer side of the collar is symmetrically fixedly connected to two side cylinders, and the two side rods are respectively inserted into the two side cylinders.

[0010] Preferably, two sleeve blocks are symmetrically fixedly sleeved on the outer side of the round rod, and a bidirectional lead screw is rotatably connected between the two sleeve blocks. A handwheel is fixedly installed on the middle of the outer side of the bidirectional lead screw, and two threaded nuts are symmetrically threaded on the outer side of the bidirectional lead screw. Two slide plates are fixedly connected to the two threaded nuts respectively.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The fit between the sealing plug, oil pipe, and concave ring facilitates the addition of grease into the hollow ring. The fit between the pressure pipe, sealing ring, side ring, positioning plate, and collar facilitates the discharge of grease from each oil filling port under pressure, thus facilitating the rapid addition of grease between the expansion cylinder and the rotary joint body. 2. The collar and positioning plate can be fixed by the cooperation of the handwheel, double-acting screw, screw nut, slide plate, round rod, side rod and side cylinder, so as to facilitate the quick connection of the pressure pipe and the side ring. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] In the attached diagram: Figure 1 This is a schematic diagram of the rotary joint structure of the present invention, which can automatically compensate for lubricating grease. Figure 2 A schematic diagram of the mechanism structure is added to this utility model; Figure 3 This is a schematic diagram of the concave ring structure of this utility model; Figure 4 This is a schematic diagram of the side ring structure of this utility model; Figure 5 This is a schematic diagram of the positioning plate structure of this utility model.

[0014] In the diagram: 1. Expansion cylinder; 2. Adding mechanism; 201. Hollow ring; 202. Air hopper; 203. Pressure booster pipe; 204. Side ring; 205. Oil inlet; 206. Concave ring; 207. Sealing plug; 208. Oil pipe; 209. Sealing ring; 2010. Positioning plate; 2011. Collar; 2012. Side cylinder; 2013. Side rod; 2014. Sleeve block; 2015. Round rod; 2016. Handwheel; 2017. Two-way lead screw; 2018. Nut; 2019. Slide plate; 3. Rotary joint body. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Example 1, by Figure 1 The present invention relates to a rotary joint that can automatically compensate for lubricating grease, comprising an expansion cylinder 1 and a rotary joint body 3, wherein an adding mechanism 2 is provided between the expansion cylinder 1 and the rotary joint body 3.

[0017] Specifically, by Figure 2-4 The filling mechanism 2 includes a hollow ring 201 located between the expansion cylinder 1 and the rotary joint body 3. An oil pipe 208 is fixedly connected to the outer side of the hollow ring 201. A sealing plug 207 is provided at the end of the oil pipe 208 away from the hollow ring 201. A concave ring 206 is fixedly connected to the inner side of the hollow ring 201. Multiple oil filling ports 205 are provided at equal angles on the concave ring 206. An air bucket 202 is fixedly connected to the outer side of the hollow ring 201. A side ring 204 is fixedly connected to the end of the air bucket 202 away from the hollow ring 201. 4. A pressurizing pipe 203 is provided on the side away from the air bucket 202. A sealing ring 209 is fixedly connected to the side ring 204 away from the air bucket 202. One end of the pressurizing pipe 203 is in contact with the sealing ring 209. By setting the sealing ring 209, the sealing between the pressurizing pipe 203 and the side ring 204 can be guaranteed. A positioning plate 2010 is fixedly connected to the side ring 204 away from the air bucket 202. A collar 2011 is fixedly sleeved on the outside of the pressurizing pipe 203. The collar 2011 is movably sleeved on the outside of the positioning plate 2010. In use, first, put the collar 2011 on the outside of the positioning plate 2010 until the pressure pipe 203 is in contact with the sealing ring 209. Then, connect the end of the pressure pipe 203 away from the side ring 204 to the pressure pump. Then, open the sealing plug 207 and add grease into the hollow ring 201 through the oil pipe 208. Then, close the sealing plug 207 and start the pressure pump so that the grease in the hollow ring 201 is discharged from each oil filling port 205 under pressure. Finally, quickly add grease between the expansion cylinder 1 and the rotary joint body 3.

[0018] Specifically, by Figure 5 As shown, a round rod 2015 is fixedly connected to the outer side of the positioning plate 2010. Two sliding plates 2019 are symmetrically and movably sleeved on the outer side of the round rod 2015. Side rods 2013 are fixedly connected to the side of the two sliding plates 2019 that are close to each other. Two side cylinders 2012 are symmetrically and fixedly connected to the outer side of the collar 2011. The two side rods 2013 are respectively inserted into the two side cylinders 2012. Two sleeve blocks 2014 are symmetrically and fixedly sleeved on the outer side of the round rod 2015. A two-way screw rod 2017 is rotatably connected between the two sleeve blocks 2014. A handwheel 2016 is fixedly installed on the middle of the outer side of the two-way screw rod 2017. Two screw nuts 2018 are symmetrically threaded on the outer side of the two-way screw rod 2017. The two sliding plates 2019 are fixedly connected to the two screw nuts 2018 respectively. In use, when the collar 2011 is fitted onto the outside of the positioning plate 2010 and the pressure boosting pipe 203 is in contact with the sealing ring 209, first rotate the handwheel 2016 to drive the bidirectional lead screw 2017 to rotate. Through the two nuts 2018, the two slide plates 2019 are driven to slide along the round rod 2015. At the same time, the two side rods 2013 move closer to each other until they are inserted into the two side cylinders 2012 respectively, fixing the collar 2011 to the positioning plate 2010. Finally, the pressure boosting pipe 203 and the side ring 204 are quickly connected.

Claims

1. A rotary joint capable of automatically compensating for lubricating grease, comprising an expansion cylinder (1) and a rotary joint body (3), characterized in that: An adding mechanism (2) is provided between the expansion and contraction cylinder (1) and the rotary joint body (3); The adding mechanism (2) includes a hollow ring (201) located between the expansion cylinder (1) and the rotary joint body (3). An oil pipe (208) is fixedly connected to the outer side of the hollow ring (201). A sealing plug (207) is provided at the end of the oil pipe (208) away from the hollow ring (201). A concave ring (206) is fixedly connected to the inner side of the hollow ring (201). Multiple oil injection ports (205) are provided at equal angles on the concave ring (206). An air bucket (202) is fixedly connected to the outer side of the hollow ring (201). A side ring (204) is fixedly connected to the end of the air bucket (202) away from the hollow ring (201). A pressure boosting pipe (203) is provided on the side of the side ring (204) away from the air bucket (202).

2. The rotary joint with automatic grease compensation according to claim 1, characterized in that: A sealing ring (209) is fixedly connected to the side of the side ring (204) away from the air bucket (202), and one end of the pressurization pipe (203) is in contact with the sealing ring (209).

3. A rotary joint with automatic grease compensation according to claim 1, characterized in that: The side ring (204) is fixedly connected to a positioning plate (2010) on the side away from the air bucket (202), and a collar (2011) is fixedly sleeved on the outside of the pressurization pipe (203). The collar (2011) is movably sleeved on the outside of the positioning plate (2010).

4. A rotary joint with automatic grease compensation according to claim 3, characterized in that: A round rod (2015) is fixedly connected to the outside of the positioning plate (2010). Two sliding plates (2019) are symmetrically and movably sleeved on the outside of the round rod (2015). Side rods (2013) are fixedly connected to the side of the two sliding plates (2019) that are close to each other.

5. A rotary joint with automatic grease compensation according to claim 3, characterized in that: The collar (2011) is symmetrically fixed to two side cylinders (2012), and two side rods (2013) are inserted into the two side cylinders (2012) respectively.

6. A rotary joint with automatic grease compensation according to claim 4, characterized in that: Two sleeve blocks (2014) are symmetrically fixedly sleeved on the outer side of the round rod (2015). A two-way lead screw (2017) is rotatably connected between the two sleeve blocks (2014). A handwheel (2016) is fixedly installed on the middle of the outer side of the two-way lead screw (2017). Two threaded nuts (2018) are symmetrically threaded on the outer side of the two-way lead screw (2017). Two sliding plates (2019) are fixedly connected to the two threaded nuts (2018) respectively.

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