Oil dripping prevention loading arm structure

Abstract

The utility model relates to the technical field of crane pipes, and particularly discloses an oil-dripping-proof crane pipe structure which comprises a straight pipe and an elbow pipe, the outer wall of the elbow pipe is communicated with a connecting pipe, an oil-dripping-proof mechanism is arranged in the elbow pipe and comprises an oil pushing disc arranged in the elbow pipe, an annular mounting groove is formed in the outer wall of the oil pushing disc, and the oil pushing disc is arranged in the annular mounting groove. A sealing ring abutting against the inner wall of the elbow pipe is fixedly connected to the interior of the annular mounting groove through a groove, and a sealing rotary connector is arranged between the straight pipe and the elbow pipe. The worm and the worm gear have the self-locking characteristic, the angle and the position of the elbow pipe can be kept, and therefore the purposes that the influence on angle adjustment of the elbow pipe caused by faults of electrical equipment is avoided, the structure is simple, and use is stable are achieved, the sealing ring and the inner wall of the elbow pipe can be in a continuous and tight abutting state, and the sealing effect is good. And after the device for collecting the oil liquid is moved away, the oil liquid can be further prevented from leaking through the arrangement of the sealing ring, so that the purpose of preventing the oil liquid from dripping is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to crane pipe technical field, specifically disclose a crane pipe structure of oil drip prevention. BACKGROUND

[0002] Crane pipe, also known as liquid loading and unloading arm, is mostly used for loading and unloading liquid medium such as petroleum and chemical raw materials in automobile tank car, train tank car or tank ship; in the loading and unloading transfer of crude oil, crane pipe is widely used due to its high safety and flexibility.

[0003] Chinese patent CN220098555U discloses a crane pipe structure of oil drip prevention, which comprises a hollow first section pipe and an elbow pipe, the first section pipe and the elbow pipe are connected through threads, and a steering device is arranged between the first section pipe and the elbow pipe, the steering device comprises a steering motor arranged on the outer peripheral surface of the first section pipe, a driving gear connected with the output shaft of the steering motor and a driven gear arranged on the outer peripheral surface of the elbow pipe, and the driving gear is engaged with the driven gear; after oil unloading is completed, the steering motor drives the elbow pipe to rotate, so that the outlet thereof faces upward, thereby preventing crude oil from dripping, the structure is simple and has good applicability; workers are not needed for cleaning, which saves time and effort; the safety hazard caused by crude oil dripping is eliminated, and the safety is good.

[0004] With the rapid development of science and technology, the above-mentioned patent prevents crude oil from dripping by driving the elbow pipe to rotate so that the outlet thereof faces upward, if the rotation speed of the elbow pipe is fast, some oil adhering to the inner wall of the pipe will be thrown out due to centrifugal force or angle change in the steering process of the elbow pipe, and when the steering speed of the elbow pipe is slow, a small amount of oil will still flow out in the rotation process; in addition, the above-mentioned patent adjusts the angle of the elbow pipe by relying on the engagement of the driving gear and the driven gear driven by the steering motor, the steering motor as an electrical equipment may have motor faults such as motor winding short circuit, open circuit and motor bearing damage, which cannot realize the function of preventing oil dripping by making the outlet of the elbow pipe face upward, and cannot realize the function of flexibly adjusting the angle and direction of the elbow pipe according to actual needs, thereby adversely affecting normal work, therefore, a crane pipe structure of oil drip prevention is needed to solve this problem. SUMMARY

[0005] The utility model provides a crane pipe structure of oil drip prevention, which has the characteristics of preventing oil dripping and avoiding the influence of electrical equipment faults on the angle adjustment of the elbow pipe, simple structure and stable use.

[0006] The utility model discloses a kind of anti-dripping oil's crane pipe structures, including straight pipe and elbow pipe, the outer wall of the elbow pipe is connected with connecting pipe, the inside of the elbow pipe is provided with anti-dripping oil mechanism, the anti-dripping oil mechanism includes the oil pushing disc being set in the inside of elbow pipe, annular mounting groove is set in the outer wall of the oil pushing disc, the inside of the annular mounting groove is fixedly connected with the sealing ring that the inner wall of elbow pipe is abutted to by recess groove;

[0007] Sealing rotary joint is arranged between the straight pipe and the elbow pipe, the left end of the straight pipe is fixedly connected with the fixed end of the sealing rotary joint, the right end of the elbow pipe is fixedly connected with the rotating end of the sealing rotary joint, a rectangular frame is arranged on the outside of the sealing rotary joint, the upper end of the rectangular frame is fixedly connected with a vertical plate, a rotating shaft is rotatably connected to the left end of the vertical plate, a first gear is fixedly connected to the left end of the rotating shaft, a second gear meshing with the first gear is fixedly connected to the outer wall of the elbow pipe, a hand drive mechanism is arranged on the right side of the rotating shaft.

[0008] The hand drive mechanism includes a drive frame fixedly connected to the right end of the vertical plate, a worm is rotatably connected inside the drive frame, the outer wall of the worm is meshingly connected with a worm wheel, a transmission shaft penetrating through the vertical plate is fixedly connected between the worm wheel and the rotating shaft, a hand wheel extending to the outside of the drive frame is fixedly connected to the upper end of the worm.

[0009] A limiting mechanism is arranged on the upper side of the oil pushing disc.

[0010] As a preferred anti-dripping oil's crane pipe structure of the utility model, the limiting mechanism includes a connecting rod fixedly connected to the upper end of the oil pushing disc and extending into the connecting pipe, a threaded cap abutting against the upper end of the connecting rod is threadedly connected to the outer wall of the connecting pipe, two left and right distributed insertion grooves are formed in the inner wall of the connecting pipe, two insertion blocks adapted thereto are inserted into the two insertion grooves respectively, and a connecting disc fixedly connected with the connecting rod is fixedly connected between the two insertion blocks.

[0011] As a preferred anti-dripping oil's crane pipe structure of the utility model, a ring-shaped sealing gasket abutting against the upper end of the connecting pipe is fixedly connected to the top end inside the threaded cap.

[0012] As a preferred anti-dripping oil's crane pipe structure of the utility model, a guide cone head is fixedly connected to the lower end of the oil pushing disc.

[0013] As a preferred anti-dripping oil's crane pipe structure of the utility model, the inner wall of the oil pushing disc is in close contact with the inner wall of the elbow pipe.

[0014] As a preferred anti-dripping oil's crane pipe structure of the utility model, a plurality of fixing rods are fixedly connected between the inner wall of the rectangular frame and the outer wall of the sealing rotary joint.

[0015] As a kind of anti-dripping oil's crane pipe structure of the utility model, the inner diameter of the connecting pipe and the elbow pipe is equal.

[0016] The utility model has the advantages of:

[0017] When the worm is rotated by hand wheel, the elbow pipe can be rotated with the rotating end of the sealing rotary joint, so that the elbow pipe can be adjusted to a suitable angle, and after adjustment, the angle and position of the elbow pipe can be maintained due to the self-locking characteristics of the worm and the worm gear, so that the influence of the fault of the electrical equipment on the angle adjustment of the elbow pipe is avoided, and the structure is simple and stable.

[0018] When the oil is unloaded, the threaded cap is opened, the oil in the elbow pipe is pushed downward by the oil pushing disc and discharged, until the lower end of the guide cone and the lower end of the elbow pipe are at the same horizontal plane, at this time, the position of the oil pushing disc and the sealing ring is fixed by the limiting mechanism, the sealing ring is in continuous abutting and close state with the inner wall of the elbow pipe, when the oil collecting device is removed, the oil leakage is further prevented by the sealing ring, so that the purpose of preventing oil dripping is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiment or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0020] Figure 1 It is a front view of the whole of the utility model anti-dripping oil's crane pipe structure;

[0021] Figure 2 It is the utility model Figure 1 A enlarged view of the middle A;

[0022] Figure 3 It is the utility model Figure 1 A enlarged view of the middle B;

[0023] Figure 4 It is the utility model of oil pushing disc connection structure diagram;

[0024] Figure 5 It is the utility model threaded cap and annular sealing gasket connection structure diagram.

[0025] Marked in the figure, 1, straight pipe; 2, elbow pipe; 3, connecting pipe; 4, push oil disc; 5, annular mounting groove; 6, sealing ring; 7, connecting rod; 8, connecting disc; 9, insertion groove; 10, insertion block; 11, threaded cover; 12, annular sealing gasket; 13, sealing swivel joint; 14, rectangular frame; 15, fixed rod; 16, second gear; 17, first gear; 18, vertical plate; 19, rotating shaft; 20, driving frame; 21, worm; 22, worm wheel; 23, hand wheel; 24, guide cone head. DETAILED DESCRIPTION

[0026] The utility model will be further explained in connection with the drawings and specific embodiments, to help understanding the contents of the utility model. The method used in the utility model is conventional method if no special provision, and the raw materials and devices used are conventional market products if no special provision.

[0027] Please refer to Figures 1-5 An oil-dripping-preventing riser structure, comprising a straight pipe 1 and an elbow pipe 2, the outer wall of the elbow pipe 2 is communicated with a connecting pipe 3, the inside of the elbow pipe 2 is provided with an oil-dripping-preventing mechanism, the oil-dripping-preventing mechanism comprises a push oil disc 4 arranged in the inside of the elbow pipe 2, the outer wall of the push oil disc 4 is provided with an annular mounting groove 5, the inside of the annular mounting groove 5 is fixedly connected with a sealing ring 6 abutting against the inner wall of the elbow pipe 2 through a groove;

[0028] A sealing swivel joint 13 is arranged between the straight pipe 1 and the elbow pipe 2, the left end of the straight pipe 1 is fixedly connected with the fixed end of the sealing swivel joint 13, the right end of the elbow pipe 2 is fixedly connected with the rotating end of the sealing swivel joint 13, the outside of the sealing swivel joint 13 is provided with a rectangular frame 14, the upper end of the rectangular frame 14 is fixedly connected with a vertical plate 18, the left end of the vertical plate 18 is rotatably connected with a rotating shaft 19, the left end of the rotating shaft 19 is fixedly connected with a first gear 17, the outer wall of the elbow pipe 2 is fixedly connected with a second gear 16 meshing with the first gear 17, the right side of the rotating shaft 19 is provided with a hand drive mechanism;

[0029] The hand drive mechanism comprises a driving frame 20 fixedly connected with the right end of the vertical plate 18, the inside of the driving frame 20 is rotatably connected with a worm 21, the outer wall of the worm 21 is meshingly connected with a worm wheel 22, the worm wheel 22 and the rotating shaft 19 are fixedly connected with a transmission shaft penetrating through the vertical plate 18, the upper end of the worm 21 is fixedly connected with a hand wheel 23 extending to the outside of the driving frame 20;

[0030] The upper side of the push oil disc 4 is provided with a limiting mechanism.

[0031] In the embodiment, when in use, the worm 21 is rotated by the hand wheel 23, and the worm wheel 22 is further rotated, so that the rotating shaft 19 and the first gear 17 are rotated by the transmission shaft, and the second gear 16 is further rotated, and the elbow pipe 2 is rotated along with the rotating end of the sealing rotary joint 13, so that the angle of the oil outlet at the lower end of the elbow pipe 2 can be flexibly adjusted according to actual needs; after the adjustment is completed, the worm 21 and the worm wheel 22 have the self-locking characteristics, so that the rotating shaft 19 and the first gear 17 are prevented from being deflected, and the angle and the position of the elbow pipe 2 are maintained, and in this way, the purpose that the angle adjustment of the elbow pipe 2 is avoided to be affected by the fault of the electrical equipment, and the structure is simple and stable is achieved.

[0032] When the oil is unloaded, the oil enters the inside of the sealing rotary joint 13 through the straight pipe 1, enters the inside of the elbow pipe 2, and is discharged from the oil outlet end of the elbow pipe 2; at this time, the threaded cover 11 is installed on the outer wall of the connecting pipe 3, and the annular sealing gasket 12 abuts against the upper end of the connecting pipe 3, so that the oil leakage is prevented; when the oil unloading is completed, the threaded cover 11 is opened, and then the oil pushing disc 4 and the sealing ring 6 are inserted into the inside of the elbow pipe 2 of the connecting pipe 3; the oil in the inside of the elbow pipe 2 is pushed downward by the oil pushing disc 4, and the residual oil in the inside of the elbow pipe 2 is discharged until the lower end of the guide cone 24 is at the same horizontal plane as the lower end of the elbow pipe 2; at this time, the position of the oil pushing disc 4 and the sealing ring 6 is fixed by the limiting mechanism, and the sealing ring 6 has the elasticity and is in the state of continuously abutting against the inner wall of the elbow pipe 2; the oil in the elbow pipe 2 and the lower end of the guide cone 24 is wiped; when the oil unloading is completed and the device for collecting the oil is removed, the oil leakage is further prevented by the sealing ring 6, so that the purpose that the oil dripping is prevented is achieved.

[0033] As a technical optimization scheme of the utility model, the limiting mechanism comprises a connecting rod 7 fixedly connected to the upper end of the oil pushing disc 4 and extending into the inside of the connecting pipe 3, a threaded cover 11 threadedly connected to the outer wall of the connecting pipe 3 and abutting against the upper end of the connecting rod 7, two plug-in grooves 9 formed in the inner wall of the connecting pipe 3 and distributed on the left and right sides, two plug-in blocks 10 plug-connected in the two plug-in grooves 9 and matched with the two plug-in grooves 9, and a connecting disc 8 fixedly connected between the two plug-in blocks 10 and fixedly connected with the connecting rod 7.

[0034] In the embodiment, the oil in the elbow pipe 2 is pushed downwards by the pushing oil disc 4, the oil in the elbow pipe 2 is pushed out, the two inserting blocks 10 are inserted into the two inserting grooves 9 respectively, the lower end of the guide cone head 24 is at the same horizontal plane with the lower end of the elbow pipe 2, the connecting rod 7 is abutted with the top end of the threaded cover 11, and the position of the pushing oil disc 4 and the sealing ring 6 is fixed.

[0035] As a technical optimization scheme of the utility model, the top end of the threaded cover 11 is fixedly connected with the annular sealing gasket 12 abutting against the upper end of the connecting pipe 3.

[0036] In the embodiment, the annular sealing gasket 12 is arranged, and the annular sealing gasket 12 abuts against the upper end of the connecting pipe 3, so that the oil can be prevented from leaking directly from the connecting pipe 3 and the threaded cover 11.

[0037] As a technical optimization scheme of the utility model, the lower end of the pushing oil disc 4 is fixedly connected with the guide cone head 24.

[0038] In the embodiment, the guide cone head 24 is arranged, so that the pushing oil disc 4 is conveniently inserted into the connecting pipe 3.

[0039] As a technical optimization scheme of the utility model, the pushing oil disc 4 is attached to the inner wall of the elbow pipe 2.

[0040] In the embodiment, the pushing oil disc 4 is attached to the inner wall of the elbow pipe 2, so that the oil in the inner wall of the elbow pipe 2 is pushed downwards.

[0041] As a technical optimization scheme of the utility model, the inner wall of the rectangular frame 14 and the outer wall of the sealing rotary joint 13 are fixedly connected with the plurality of fixing rods 15.

[0042] In the embodiment, the plurality of fixing rods 15 are arranged, so as to connect and fix the rectangular frame 14.

[0043] As a technical optimization scheme of the utility model, the inner diameter of the connecting pipe 3 is equal to the inner diameter of the elbow pipe 2.

[0044] In the embodiment, the inner diameter of the connecting pipe 3 is equal to the inner diameter of the elbow pipe 2, so that the pushing oil disc 4 can be smoothly moved in the connecting pipe 3 and the elbow pipe 2.

[0045] The working principle and use process of the utility model: in use, first of all through hand wheel 23 rotates worm 21, and then drives worm gear 22 to rotate, thereby through transmission shaft drives rotating shaft 19 and first gear 17 to rotate, and then drives second gear 16 to rotate, simultaneously drives elbow pipe 2 to rotate along with the rotation end of sealing rotary joint 13, so that the angle of the oil outlet of lower end of elbow pipe 2 can be flexibly adjusted according to actual needs, after adjusting, because worm 21 and worm gear 22 have the characteristics of self-locking, so that the deflection of rotating shaft 19 and first gear 17 can be prevented, simultaneously the angle and position of elbow pipe 2 are kept, and through the mode, the purpose that the angle adjustment of elbow pipe 2 is not affected due to the fault of electrical equipment is achieved, and the structure is simple, and stable in use.

[0046] When discharging oil, oil liquid can enter the inside of sealing rotary joint 13 through straight pipe 1, then enter the inside of elbow pipe 2 and discharge from the oil outlet end of elbow pipe 2, at this time, threaded cover 11 is installed on the outer wall of connecting pipe 3, and annular sealing gasket 12 abuts against the upper end of connecting pipe 3, so that the leakage of oil liquid can be prevented, when discharging oil is completed, threaded cover 11 is opened, then push oil disc 4 and sealing ring 6 are inserted into the inside of elbow pipe 2 of connecting pipe 3, push oil disc 4 is pushed downwards through connecting rod 7, oil liquid in the inside of elbow pipe 2 is pushed downwards through push oil disc 4, the residual oil in the inside of elbow pipe 2 will be discharged, in the process, two plug-in blocks 10 enter the inside of two plug-in slots 9 respectively, and two plug-in blocks 10 abut against the bottom end of the inner wall of two plug-in slots 9 respectively, at this time, the lower end of guide cone head 24 is at the same horizontal plane with the lower end of elbow pipe 2, then threaded cover 11 is screwed on the outer wall of connecting pipe 3, and connecting rod 7 abuts against the top end in the inside of threaded cover 11, so that the position of push oil disc 4 and sealing ring 6 is fixed, and sealing ring 6 has elasticity, and is in the state of continuously abutting against the inner wall of elbow pipe 2 tightly, then the oil liquid of elbow pipe 2 and the lower end of guide cone head 24 is wiped, when discharging oil is completed, and the device for collecting oil liquid is removed, through the setting of sealing ring 6, the leakage of oil liquid can be further prevented, so that the purpose that the dripping of oil liquid is prevented is achieved.

[0047] In the description of the utility model, it is to be understood that the orientation or position relation indicated by the terms "left", "right", "upper", "lower", "top", "bottom", "front", "back", "inner", "outer", "back", "middle" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0048] The above is only a specific embodiment of the present application, and cannot limit the scope of the present application. The replacement of equivalent components or equivalent changes and modifications within the scope of the present application should still be within the scope of the present application.

Claims

1. A drip-proof loading arm structure comprising a straight pipe (1) and an elbow pipe (2), characterized in that: The outer wall of the elbow pipe (2) is communicated with a connecting pipe (3), the inside of the elbow pipe (2) is provided with an oil drip prevention mechanism, the oil drip prevention mechanism comprises a oil pushing disc (4) arranged in the inside of the elbow pipe (2), the outer wall of the oil pushing disc (4) is provided with an annular mounting groove (5), the inside of the annular mounting groove (5) is fixedly connected with a sealing ring (6) abutting against the inner wall of the elbow pipe (2) through a groove; The straight pipe (1) and the elbow pipe (2) are provided with a sealing rotary joint (13), the left end of the straight pipe (1) is fixedly connected with the fixed end of the sealing rotary joint (13), the right end of the elbow pipe (2) is fixedly connected with the rotating end of the sealing rotary joint (13), the outer side of the sealing rotary joint (13) is provided with a rectangular frame (14), the upper end of the rectangular frame (14) is fixedly connected with a vertical plate (18), the left end of the vertical plate (18) is rotatably connected with a rotating shaft (19), the left end of the rotating shaft (19) is fixedly connected with a first gear (17), the outer wall of the elbow pipe (2) is fixedly connected with a second gear (16) engaged with the first gear (17), the right side of the rotating shaft (19) is provided with a hand driving mechanism; The hand driving mechanism comprises a driving frame (20) fixedly connected to the right end of the vertical plate (18), the inside of the driving frame (20) is rotatably connected with a worm (21), the outer wall of the worm (21) is engagedly connected with a worm wheel (22), the worm wheel (22) and the rotating shaft (19) are fixedly connected with a transmission shaft penetrating through the vertical plate (18), the upper end of the worm (21) is fixedly connected with a hand wheel (23) extending to the outside of the driving frame (20); The upper side of the oil pushing disc (4) is provided with a limiting mechanism.

2. The drip-reducing loading arm structure according to claim 1, characterized by: The limiting mechanism comprises a connecting rod (7) fixedly connected to the upper end of the oil pushing disc (4) and extending to the inside of the connecting pipe (3), the outer wall of the connecting pipe (3) is threadedly connected with a threaded cover (11) abutting against the upper end of the connecting rod (7), the inner wall of the connecting pipe (3) is provided with two left and right distributed insertion grooves (9), the inside of the two insertion grooves (9) is respectively inserted with an insertion block (10) matched therewith, the two insertion blocks (10) are fixedly connected with a connecting disc (8) fixedly connected with the connecting rod (7).

3. The drip-reducing loading arm of claim 2, wherein: The top end of the inside of the threaded cover (11) is fixedly connected with an annular sealing gasket (12) abutting against the upper end of the connecting pipe (3).

4. The drip-reducing loading arm of claim 1, wherein: The lower end of the oil pushing disc (4) is fixedly connected with a guide cone head (24).

5. The drip-reducing loading arm of claim 1, wherein: The oil pushing disc (4) is in close contact with the inner wall of the elbow pipe (2).

6. The drip-reducing loading arm of claim 1, wherein: A plurality of fixed rods (15) are fixedly connected between the inner wall of the rectangular frame (14) and the outer wall of the sealing rotary joint (13).

7. The drip-reducing loading arm of claim 1, wherein: The inner diameter of the connecting pipe (3) is equal to that of the elbow pipe (2).

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