Swivel joint assembly

Abstract

The utility model belongs to the technical field of agricultural machine engine fans, and particularly relates to a swivel joint assembly. A swivel shaft mounting hole is formed in the right end of a joint shell, a first oil way communicated with the swivel shaft mounting hole is formed in the left end of the joint shell, and a swivel shaft body is rotationally arranged in the swivel shaft mounting hole through a bearing mechanism; and a second oil path communicated with the rotating shaft mounting hole is formed in the rotating shaft body. The left end of the rotating shaft body penetrates through the bearing mechanism and is provided with a sealing mechanism, the inner end of the rotating shaft mounting hole is sequentially provided with a spring reinforced sealing mounting groove, a check ring mounting groove and a first hole elastic check ring clamping groove from left to right, and a spring reinforced sealing sleeve is arranged at the left end of the rotating shaft body and located in the spring reinforced sealing mounting groove; the first hole is provided with an elastic check ring which is used for reinforcing the sealing of the spring and is respectively positioned in the spring reinforcing sealing mounting groove and the check ring mounting groove. The sealing performance of the hydraulic adjusting mechanism for the engine fan is improved, the control precision is ensured, and meanwhile pollution to the environment is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery engine fans, and particularly relates to a rotary joint assembly. Background Art

[0002] When the engine of the construction agricultural machinery is working, the cooling fan sucks air to blow towards the engine body, and at the same time cools the heat sink. The working environment of construction agricultural machinery is poor, especially the working environment of tractors and harvesters is dusty and full of grass clippings. Although there are dustproof mesh covers, a large part of dust and fine grass clippings still pass through the mesh covers and enter the interior, blocking the heat sink and reducing the air intake. In severe cases, the engine of the construction agricultural machinery will overheat and the power will drop seriously during operation. Engine overheating also causes the engine lubricating oil to become thinner, accompanied by serious faults such as crankshaft seizure and piston burning.

[0003] Some engine cooling fans on the market have added a hydraulic plunger mechanism to control the filling and draining of the hydraulic plunger mechanism, change the torsion angle of the fan blades, and allow the fan to switch between suction and blowing states. This removes dust adsorbed on the radiator surface by the fan suction, avoids excessive engine water temperature and hydraulic oil temperature that affect the performance of the entire machine, and achieves continuous operation. The hydraulic oil of the engine cooling fan is input into the hydraulic plunger mechanism through a rotary shaft. The existing rotary shaft is usually installed in the rotary shaft mounting hole of the joint housing. The sealing effect between the rotary shaft and the joint housing is poor, and the hydraulic oil is easy to leak from the gap between the rotary shaft and the joint housing, which affects the control accuracy and causes farmland environmental pollution, affecting the environment and production. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a rotary joint assembly with good sealing effect, high control precision and environmental protection.

[0005] The purpose of this utility model is solved by the following technical solutions:

[0006] A rotary joint assembly, comprising a joint housing, characterized in that: a rotary shaft mounting hole is provided at the right end of the joint housing, a first oil circuit is provided at the left end of the joint housing, the first oil circuit is communicated with the rotary shaft mounting hole, a bearing mechanism is provided in the rotary shaft mounting hole, and further comprising a rotary shaft body, the rotary shaft body is rotatably arranged in the rotary shaft mounting hole through the bearing mechanism, a second oil circuit is provided in the rotary shaft body, and the second oil circuit is communicated with the rotary shaft mounting hole;

[0007] The left end of the rotating shaft body passes through the bearing mechanism and is provided with a sealing mechanism, which includes a spring-reinforced seal, a retaining ring, and an elastic retaining ring for the first hole; the inner end of the rotating shaft mounting hole is provided with a spring-reinforced seal mounting groove, a retaining ring mounting groove, and an elastic retaining ring clamping groove for the first hole from left to right, the spring-reinforced seal sleeve is arranged at the left end of the rotating shaft body and is located in the spring-reinforced seal mounting groove, the retaining ring sleeve is arranged on the rotating shaft body and is located on the right side of the spring-reinforced seal, the elastic retaining ring for the first hole is clamped in the elastic retaining ring clamping groove for the first hole, and the spring-reinforced seal and the retaining ring are positioned in the spring-reinforced seal mounting groove and the retaining ring mounting groove, respectively.

[0008] Based on the above structure, the spring-reinforced seal increases the sealing between the rotary shaft body and the joint housing, effectively preventing the hydraulic oil from leaking out of the gap therebetween, ensuring control accuracy while avoiding environmental pollution.

[0009] Preferably, the bearing mechanism of the utility model comprises a first bearing, a second bearing, an elastic retaining ring for a shaft, a washer, and an elastic retaining ring for a second hole; a bearing mounting groove and an elastic retaining ring clamping groove for a second hole are sequentially opened at the outer end of the rotating shaft mounting hole from left to right, the first bearing, the washer, and the second bearing are sequentially sleeved on the rotating shaft body from left to right and are in the bearing mounting groove, the elastic retaining ring for the second hole is clamped in the elastic retaining ring clamping groove for the second hole and positions the first bearing, the washer, and the second bearing in the bearing mounting groove, the elastic retaining ring for the shaft is arranged on the left side of the first bearing, and a shaft elastic retaining ring clamping groove is provided at a position on the rotating shaft body that cooperates with the elastic retaining ring for the shaft.

[0010] Preferably, the central axis of the spring-reinforced seal installation groove, the central axis of the retaining ring installation groove, the central axis of the elastic retaining ring groove for the first hole, the central axis of the bearing installation groove, and the central axis of the elastic retaining ring groove for the second hole of the utility model all coincide with each other; the diameter of the elastic retaining ring groove for the first hole is larger than the diameter of the retaining ring installation groove, the diameter of the bearing installation groove is larger than the diameter of the elastic retaining ring groove for the first hole, and the diameter of the elastic retaining ring groove for the second hole is larger than the diameter of the bearing installation groove.

[0011] Preferably, the rotating shaft body of the utility model includes a first cylinder, a second cylinder and a pipe joint mounting body arranged from left to right, the outer diameter of the second cylinder is larger than the outer diameter of the first cylinder, the central axis of the first cylinder coincides with the central axis of the second cylinder, and the central axis of the pipe joint mounting body is perpendicular to the central axis of the second cylinder; the spring reinforced seal, retaining ring, elastic retaining ring for shaft, first bearing, gasket and second bearing are all sleeved on the first cylinder, and the left end of the second cylinder is connected to the right end of the inner ring of the second bearing.

[0012] Preferably, a pipe joint is provided on the pipe joint mounting body of the utility model, a third oil circuit is opened in the pipe joint, and the third oil circuit is connected with the second oil circuit.

[0013] Preferably, a sealing ring installation groove is provided on the outer side of the joint housing of the utility model, and a sealing ring is provided on the sealing ring installation groove.

[0014] Preferably, the number of the sealing ring installation grooves of the utility model is more than 2, and the number of the sealing rings is the same as the number of the sealing ring installation grooves.

[0015] Preferably, in the utility model, the central axis of the first oil circuit, the central axis of the second oil circuit, the central axis of the rotating shaft mounting hole, the central axis of the rotating shaft body, and the central axis of the joint housing all coincide with each other.

[0016] Compared with the prior art, the utility model has the following characteristics and beneficial effects:

[0017] 1. The spring-enhanced seal sleeved on the rotating shaft body greatly increases the sealing effect of the connection between the rotating shaft body and the joint housing. The first hole elastic retaining ring is clamped in the first hole elastic retaining ring clamping groove, and the spring-enhanced seal and the retaining ring are respectively positioned in the spring-enhanced seal installation groove and the retaining ring installation groove, which increases the installation stability of the spring-enhanced seal, thereby further ensuring the sealing effect, ensuring control accuracy and avoiding pollution to the environment.

[0018] A sealing ring installation groove is provided on the outer side of the joint housing, and a sealing ring is provided on the sealing ring installation groove, which improves the sealing effect of the connection between the joint housing and the fan housing and further avoids leakage of hydraulic oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0020] Figure 2 It is the main sectional structural diagram of the utility model.

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model when connected to a fan.

[0022] In the figure: joint housing 1, rotary shaft mounting hole 2, first oil circuit 3, rotary shaft body 4, second oil circuit 5, spring reinforced seal 6, retaining ring 7, elastic retaining ring for first hole 8, spring reinforced seal mounting groove 9, retaining ring mounting groove 10, elastic retaining ring clamping groove 11 for first hole, first bearing 12, second bearing 13, elastic retaining ring for shaft 14, washer 15, elastic retaining ring for second hole 16, bearing mounting groove 17, elastic retaining ring clamping groove 18 for second hole, elastic retaining ring clamping groove 19 for shaft, first cylinder 20, second cylinder 21, pipe joint mounting body 22, pipe joint 23, third oil circuit 24, sealing ring mounting groove 25, sealing ring 26, plunger mechanism 27, fan blade 28, fan housing 29. DETAILED DESCRIPTION

[0023] The utility model will be described in further detail below with reference to the accompanying drawings.

[0024] like Figure 1 , Figure 2 As shown, a rotary joint assembly includes a joint housing 1, a rotary shaft mounting hole 2 is provided at the right end of the joint housing 1, a first oil circuit 3 is provided at the left end of the joint housing 1, the first oil circuit 3 is communicated with the rotary shaft mounting hole 2, a bearing mechanism is provided in the rotary shaft mounting hole 2, and a rotary shaft body 4 is also included, the rotary shaft body 4 is rotatably arranged in the rotary shaft mounting hole 2 through the bearing mechanism, a second oil circuit 5 is provided in the rotary shaft body 4, and the second oil circuit 5 is communicated with the rotary shaft mounting hole 2. Preferably, the central axis of the first oil circuit 3, the central axis of the second oil circuit 5, the central axis of the rotary shaft mounting hole 2, the central axis of the rotary shaft body 4, and the central axis of the joint housing 1 all coincide.

[0025] The left end of the rotating shaft body 4 passes through the bearing mechanism and is provided with a sealing mechanism, which includes a spring-reinforced seal 6, a retaining ring 7, and an elastic retaining ring 8 for the first hole; the inner end of the rotating shaft mounting hole 2 is provided with a spring-reinforced seal mounting groove 9, a retaining ring mounting groove 10 and an elastic retaining ring clamping groove 11 for the first hole from left to right, the spring-reinforced seal 6 is sleeved on the left end of the rotating shaft body 4 and is located in the spring-reinforced seal mounting groove 9, the retaining ring 7 is sleeved on the rotating shaft body 4 and is located on the right side of the spring-reinforced seal 6, the elastic retaining ring 8 for the first hole is clamped in the elastic retaining ring clamping groove 11 for the first hole and the spring-reinforced seal 6 and the retaining ring 7 are positioned in the spring-reinforced seal mounting groove 9 and the retaining ring mounting groove 10 respectively.

[0026] The bearing mechanism includes a first bearing 12, a second bearing 13, a shaft elastic circlip 14, a washer 15, and a second hole elastic circlip 16; the outer end of the rotating shaft mounting hole 2 is provided with a bearing mounting groove 17 and a second hole elastic circlip clamping groove 18 from left to right, the first bearing 12, the washer 15, and the second bearing 13 are sequentially sleeved on the rotating shaft body 4 from left to right and are located in the bearing mounting groove 17, the second hole elastic circlip 16 is clamped in the second hole elastic circlip clamping groove 18 and positions the first bearing 12, the washer 15, and the second bearing 13 in the bearing mounting groove 17, the shaft elastic circlip 14 is arranged on the left side of the first bearing 12, and a shaft elastic circlip clamping groove 19 is provided on the rotating shaft body 4 at a position cooperating with the shaft elastic circlip 14.

[0027] Preferably, the center axes of the spring-reinforced seal mounting groove 9, the retaining ring mounting groove 10, the first hole elastic retaining ring groove 11, the bearing mounting groove 17, and the second hole elastic retaining ring groove 18 all coincide with each other; the diameter of the first hole elastic retaining ring groove 11 is larger than the diameter of the retaining ring mounting groove 10, the diameter of the bearing mounting groove 17 is larger than the diameter of the first hole elastic retaining ring groove 11, and the diameter of the second hole elastic retaining ring groove 18 is larger than the diameter of the bearing mounting groove 17.

[0028] The rotating shaft body 4 includes a first cylinder 20, a second cylinder 21 and a pipe joint mounting body 22 arranged from left to right, the outer diameter of the second cylinder 21 is larger than the outer diameter of the first cylinder 20, the central axis of the first cylinder 20 coincides with the central axis of the second cylinder 21, and the central axis of the pipe joint mounting body 22 is perpendicular to the central axis of the second cylinder 21; the spring reinforced seal 6, the retaining ring 7, the elastic retaining ring 14 for the shaft, the first bearing 12, the washer 15, and the second bearing 13 are all sleeved on the first cylinder 20, and the left end of the second cylinder 21 is connected to the right end of the inner ring of the second bearing 13.

[0029] The pipe joint installation body 22 is provided with a pipe joint 23 , and a third oil passage 24 is opened in the pipe joint 23 . The third oil passage 24 is connected with the second oil passage 5 .

[0030] The outer side of the joint housing 1 is provided with a sealing ring installation groove 25, and a sealing ring 26 is provided on the sealing ring installation groove 25. The number of the sealing ring installation grooves 25 is more than 2, and the number of the sealing rings 26 is the same as the number of the sealing ring installation grooves 25.

[0031] like Figure 1-Figure 3 As shown, during operation, the hydraulic oil flows forward or reversely in the third oil circuit 24, the second oil circuit 5 and the first oil circuit 3 to change the state of the plunger mechanism 27, thereby changing the angle of the fan blade 28, realizing the forward and reverse rotation of the fan, so that the fan can switch between the suction and blowing states, and clean the dust adsorbed on the surface of the radiator due to the suction of the fan, so as to avoid the engine water temperature and hydraulic oil temperature being too high and affecting the performance of the whole machine, and realize continuous operation. Therefore, the sealing of the oil circuit used to adjust the fan blade is directly related to the adjustment accuracy of the angle of the fan blade 28, thereby affecting the working performance of the whole machine.

[0032] The spring-reinforced seal 6 sleeved on the rotating shaft body 4 greatly increases the sealing effect of the connection between the rotating shaft body 4 and the joint housing 1. The first hole elastic retaining ring 8 is clamped in the first hole elastic retaining ring clamping groove 11 and the spring-reinforced seal 6 and retaining ring 7 are respectively positioned in the spring-reinforced seal installation groove 9 and retaining ring installation groove 10, which increases the installation stability of the spring-reinforced seal 6, thereby further ensuring the sealing effect.

[0033] A sealing ring installation groove 25 is provided on the outer side of the joint housing 1, and a sealing ring 26 is provided on the sealing ring installation groove 25, which improves the sealing effect of the connection between the joint housing 1 and the fan housing 29, further avoids leakage of hydraulic oil, ensures control accuracy, and avoids pollution to the environment.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A rotary joint assembly, comprising a joint housing, characterized in that: The right end of the joint housing is provided with a rotary shaft mounting hole, the left end of the joint housing is provided with a first oil circuit, the first oil circuit is connected to the rotary shaft mounting hole, a bearing mechanism is provided in the rotary shaft mounting hole, and the joint housing further comprises a rotary shaft body, the rotary shaft body is rotatably arranged in the rotary shaft mounting hole through the bearing mechanism, a second oil circuit is provided in the rotary shaft body, and the second oil circuit is connected to the rotary shaft mounting hole; The left end of the rotating shaft body passes through the bearing mechanism and is provided with a sealing mechanism, which includes a spring-reinforced seal, a retaining ring, and an elastic retaining ring for the first hole; the inner end of the rotating shaft mounting hole is provided with a spring-reinforced seal mounting groove, a retaining ring mounting groove, and an elastic retaining ring clamping groove for the first hole from left to right, the spring-reinforced seal sleeve is arranged at the left end of the rotating shaft body and is located in the spring-reinforced seal mounting groove, the retaining ring sleeve is arranged on the rotating shaft body and is located on the right side of the spring-reinforced seal, the elastic retaining ring for the first hole is clamped in the elastic retaining ring clamping groove for the first hole, and the spring-reinforced seal and the retaining ring are positioned in the spring-reinforced seal mounting groove and the retaining ring mounting groove, respectively.

2. The swivel joint assembly according to claim 1, characterized in that: The bearing mechanism includes a first bearing, a second bearing, an elastic retaining ring for the shaft, a washer, and an elastic retaining ring for the second hole; the outer end of the rotating shaft mounting hole is provided with a bearing mounting groove and a second hole elastic retaining ring clamping groove from left to right in sequence; the first bearing, washer, and second bearing are sequentially sleeved on the rotating shaft body from left to right and are in the bearing mounting groove; the second hole elastic retaining ring is clamped in the second hole elastic retaining ring clamping groove and positions the first bearing, washer, and second bearing in the bearing mounting groove; the shaft elastic retaining ring is arranged on the left side of the first bearing, and a shaft elastic retaining ring clamping groove is provided at a position on the rotating shaft body that cooperates with the shaft elastic retaining ring.

3. The swivel joint assembly according to claim 2, characterized in that: The central axes of the spring-reinforced seal installation groove, the central axis of the retaining ring installation groove, the central axis of the elastic retaining ring groove for the first hole, the central axis of the bearing installation groove, and the central axis of the elastic retaining ring groove for the second hole all coincide with each other; the diameter of the elastic retaining ring groove for the first hole is larger than the diameter of the retaining ring installation groove, the diameter of the bearing installation groove is larger than the diameter of the elastic retaining ring groove for the first hole, and the diameter of the elastic retaining ring groove for the second hole is larger than the diameter of the bearing installation groove.

4. The swivel joint assembly according to claim 2, characterized in that: The rotating shaft body includes a first cylinder, a second cylinder and a pipe joint mounting body arranged from left to right, the outer diameter of the second cylinder is larger than the outer diameter of the first cylinder, the central axis of the first cylinder coincides with the central axis of the second cylinder, and the central axis of the pipe joint mounting body is perpendicular to the central axis of the second cylinder; the spring reinforced seal, retaining ring, elastic retaining ring for shaft, first bearing, gasket, and second bearing are all sleeved on the first cylinder, and the left end of the second cylinder is connected to the right end of the inner ring of the second bearing.

5. The swivel joint assembly according to claim 4, characterized in that: The pipe joint installation body is provided with a pipe joint, a third oil circuit is opened in the pipe joint, and the third oil circuit is connected with the second oil circuit.

6. The swivel joint assembly according to claim 1, characterized in that: A sealing ring installation groove is provided on the outer side of the joint housing, and a sealing ring is provided on the sealing ring installation groove.

7. The swivel joint assembly according to claim 6, characterized in that: The number of the sealing ring installation grooves is more than 2, and the number of the sealing rings is the same as the number of the sealing ring installation grooves.

8. The swivel joint assembly according to claim 1, characterized in that: The central axis of the first oil circuit, the central axis of the second oil circuit, the central axis of the rotary shaft mounting hole, the central axis of the rotary shaft body, and the central axis of the joint housing all coincide with each other.

Images