Hydraulic drive device for train unloading swivel arm

Abstract

The utility model belongs to the field of fluid loading and unloading, and concretely is train oil unloading crane pipe hydraulic drive device, including stand, the top of stand is equipped with inner arm, the end of inner arm is rotatably connected with outer arm, the end of outer arm is rotatably connected with downpipe, the bottom of downpipe is fixedly installed with submersible pump, and the balance ware is installed between inner arm and outer arm, the ear piece is fixedly connected on the inner arm, the hoop seat is fixedly connected on the outer arm, the hydraulic oil cylinder is hinged on the hoop seat, the telescopic end of hydraulic oil cylinder is hinged with ear piece, and the control valve group that controls the telescopic of hydraulic oil cylinder is installed on the stand, when using, the valve handle is pulled and operated, the hydraulic oil cylinder is telescopic, and the telescopic of hydraulic oil cylinder can make outer arm lift and fall, so that the crane pipe up and down can be realized, the horizontal movement of downpipe is assisted by operating personnel, and it is simple and convenient, easy and fast, reduces the working strength of staff, saves time and labour.

Description

Technical Field

[0001] This utility model relates to the field of fluid loading and unloading, specifically a hydraulic drive device for unloading oil arms on trains. Background Technology

[0002] Loading arms are specialized equipment used in the petrochemical industry for loading and unloading fluids. Also known as fluid loading arms, they are mobile devices that use rotary joints to connect with rigid pipes and elbows to transfer liquid media between trains, tank cars, and storage and transportation pipelines on trestle bridges. They replace the old-fashioned hose connections and are characterized by high safety, flexibility, and long service life.

[0003] During railway tank car unloading operations, workers need considerable physical strength to move and raise / lower the loading arms between the railway trestle and the tank car. The working space on the tank car is small, and there is no safety protection for the workers, posing a risk of falls from height. Furthermore, the loading arms have a heavy submersible pump at the suction port, which is prone to impacting the iron ladder and manhole accessories inside the tank car during raising and lowering, increasing the risk of flash explosions of oil and gas in the zero-explosion zone. During the operation, the suction port of the loading arms must be kept 5-10 cm away from the bottom plate of the tank car to prevent it from collapsing. Workers must adjust the position of the loading arms on the tank, which is time-consuming and labor-intensive. Therefore, a hydraulic drive device for unloading loading arms on trains is proposed to address the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a hydraulic drive device for unloading oil arms on trains.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The hydraulic drive device for unloading oil arms of the train according to this utility model includes a column; an inner arm is installed on the top of the column, an outer arm is rotatably connected to the end of the inner arm, a vertical pipe is rotatably connected to the end of the outer arm, a submersible pump is fixedly installed at the bottom of the vertical pipe, and a balancer is installed between the inner arm and the outer arm; an ear plate is fixedly connected to the inner arm, a clamp seat is fixedly connected to the outer arm, a hydraulic cylinder is hinged to the clamp seat, the telescopic end of the hydraulic cylinder is hinged to the ear plate, and a control valve group for controlling the telescopic extension of the hydraulic cylinder is installed on the column.

[0006] Preferably, the control valve assembly includes an operating valve, a relief valve, a hydraulic ball valve, and a pressure gauge.

[0007] Preferably, a sealing cap is fixed to the top end of the vertical tube, and a sight glass is installed on the sealing cap.

[0008] Preferably, the oil suction end of the submersible pump is fixedly connected to an extension pipe, and multiple oil inlet grooves are opened on the side of the extension pipe.

[0009] Preferably, a sleeve is fitted onto the surface of the extension tube, the sleeve and the surface of the extension tube are in sliding fit, and a hollow floating ring is fixedly connected to the bottom of the sleeve.

[0010] Preferably, a fixing ring is fixedly connected to the top end of the extension tube, a limiting rope is fixedly connected to the fixing ring, and the bottom end of the limiting rope is fixedly connected to the top end of the sleeve.

[0011] Preferably, a sealing groove is provided at the top of the sleeve, and a sealing ring is installed inside the sealing groove, which can seal the sliding gap between the sleeve and the extension tube.

[0012] The advantages of this utility model are:

[0013] 1. This utility model, by setting up lugs, hydraulic cylinders, control valve groups, and clamp seats, allows the hydraulic cylinder to extend and retract when the operating valve handle is turned. The lugs and clamp seats are hinged to both ends of the hydraulic cylinder and are respectively installed on the inner arm and outer arm. The extension and retraction of the hydraulic cylinder can raise and lower the outer arm, thereby realizing the raising and lowering of the loading arm. The operator can assist in the horizontal movement of the vertical pipe. It is simple, convenient, easy and quick, reducing the workload of the workers, saving time and effort. Moreover, the raising and lowering of the loading arm can be controlled from a relatively safe distance, improving safety. Furthermore, the structure is simple, easy to improve, and does not require disassembly of the loading arm.

[0014] 2. By setting up an extension pipe and an oil inlet groove, this utility model addresses the issue that, during use, the oil suction port of the submersible pump needs to maintain a distance of 5-10 cm from the tank truck floor to avoid pressure buildup. This utility model fixes an extension pipe to the oil suction end of the submersible pump, with the extension pipe placed between the oil suction end of the submersible pump and the tank truck floor. Oil then enters through the side oil inlet groove, thereby reducing the risk of pressure buildup due to insufficient spacing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the inner and outer arm structures of this utility model;

[0018] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the vertical tube of this utility model.

[0020] In the diagram: 11. Column; 12. Inner arm; 13. Outer arm; 14. Vertical pipe; 15. Submersible pump; 16. Balancer; 17. Lug; 18. Clamp seat; 19. Hydraulic cylinder; 2. Control valve assembly; 3. Sealing cover; 41. Extension pipe; 42. Oil inlet groove; 51. Sleeve; 52. Hollow float ring; 61. Fixing ring; 62. Limiting rope; 71. Sealing groove; 72. Sealing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Specific implementation examples are given below.

[0023] Please see Figure 1-3 As shown, the hydraulic drive device for unloading oil arms on a train includes a column 11; an inner arm 12 is mounted on the top of the column 11, an outer arm 13 is rotatably connected to the end of the inner arm 12, a vertical pipe 14 is rotatably connected to the end of the outer arm 13, a submersible pump 15 is fixedly mounted on the bottom of the vertical pipe 14, and a balancer 16 is installed between the inner arm 12 and the outer arm 13; an ear plate 17 is fixedly connected to the inner arm 12, a clamp seat 18 is fixedly connected to the outer arm 13, a hydraulic cylinder 19 is hinged to the clamp seat 18, the telescopic end of the hydraulic cylinder 19 is hinged to the ear plate 17, and a control valve group 2 for controlling the telescopic extension and retraction of the hydraulic cylinder 19 is mounted on the column 11;

[0024] When in use, the hydraulic cylinder 19 extends and retracts when the operating valve handle is turned. The two ends of the hydraulic cylinder 19 are hinged with lugs 17 and clamp seats 18. The lugs 17 and clamp seats 18 are respectively installed on the inner arm 12 and the outer arm 13. The extension and retraction of the hydraulic cylinder 19 can raise and lower the outer arm 13, thereby realizing the raising and lowering of the loading arm. The operator can assist in the horizontal movement of the vertical pipe 14. It is simple, convenient, easy and quick, reducing the workload of the workers, saving time and effort. Moreover, the structure is simple and easy to improve, and there is no need to disassemble the loading arm.

[0025] Furthermore, such as Figure 1-3 As shown, the control valve group 2 includes an operating valve, a relief valve, a hydraulic ball valve, and a pressure gauge.

[0026] Furthermore, a sealing cap 3 is fixedly connected to the top end of the vertical tube 14, and a sight glass is installed on the sealing cap 3. In use, the sealing cap 3 is fixedly connected to the top end of the vertical tube 14. The sealing cap 3 is used to cover the loading arm interface of the railway tank car to seal the loading arm interface. The sight glass is installed on the sealing cap 3 for observing the interior of the railway tank car.

[0027] Furthermore, such as Figure 4 As shown, the oil suction end of the submersible pump 15 is fixedly connected to an extension pipe 41, and multiple oil inlet grooves 42 are opened on the side of the extension pipe 41; a sleeve 51 is fitted on the surface of the extension pipe 41, and the surfaces of the sleeve 51 and the extension pipe 41 slide in fit; a hollow float ring 52 is fixedly connected to the bottom of the sleeve 51; a fixing ring 61 is fixedly connected to the top of the extension pipe 41, and a limiting rope 62 is fixedly connected to the fixing ring 61; the bottom end of the limiting rope 62 is fixedly connected to the top end of the sleeve 51; a sealing groove 71 is opened at the top end of the sleeve 51, and a sealing ring 72 is installed inside the sealing groove 71; the sealing ring 72 can seal the sliding gap between the sleeve 51 and the extension pipe 41.

[0028] When in use, the oil suction port of the submersible oil pump 15 should be kept 5 to 10 cm away from the bottom plate of the tank truck to avoid pressure buildup. This application fixes an extension pipe 41 to the oil suction end of the submersible oil pump 15. The extension pipe 41 is 10 to 30 cm long and is placed between the oil suction end of the submersible oil pump 15 and the bottom plate of the tank truck. Oil is then introduced through the side oil inlet 42. This can reduce the situation of pressure buildup due to insufficient distance.

[0029] Furthermore, to reduce the amount of residual oil inside the tanker, a sleeve 51 is fitted onto the surface of the extension pipe 41. The sleeve 51 can slide and extend on the extension pipe 41. A hollow floating ring 52 is fixed to the bottom of the sleeve 51, so that the sleeve 51 floats on the oil surface. As the liquid level drops, it can gradually block the oil inlet 42, thereby reducing the intake of air and preventing it from affecting the absorption of oil at low liquid levels. A fixing ring 61 is fixed to the extension pipe 41, and a limiting rope 62 is fixed between the fixing ring 61 and the sleeve 51. This rope can limit the upward and downward movement of the sleeve 51 to prevent it from falling off. A sealing ring 72 is used to seal the connection between the extension pipe 41 and the sleeve 51.

[0030] Working principle: When in use, the operating valve handle is turned, and the hydraulic cylinder 19 extends and retracts. The two ends of the hydraulic cylinder 19 are hinged with lugs 17 and clamp seats 18. The lugs 17 and clamp seats 18 are respectively installed on the inner arm 12 and the outer arm 13. The extension and retraction of the hydraulic cylinder 19 can raise and lower the outer arm 13, thereby realizing the raising and lowering of the loading arm. The operator assists in the horizontal movement of the vertical pipe 14. It is simple, convenient, easy and quick, reduces the workload of the workers, saves time and effort, and the structure is simple, easy to improve, and does not require disassembly of the loading arm.

[0031] When in use, the oil suction port of the submersible oil pump 15 should be kept 5 to 10 cm away from the bottom plate of the tank truck to avoid pressure buildup. This application fixes an extension pipe 41 to the oil suction end of the submersible oil pump 15. The extension pipe 41 is 10 to 30 cm long and is placed between the oil suction end of the submersible oil pump 15 and the bottom plate of the tank truck. Oil is then introduced through the side oil inlet 42. This can reduce the situation of pressure buildup due to insufficient distance.

[0032] Furthermore, to reduce the amount of residual oil inside the tanker, a sleeve 51 is fitted onto the surface of the extension pipe 41. The sleeve 51 can slide and extend on the extension pipe 41. A hollow floating ring 52 is fixed to the bottom of the sleeve 51, so that the sleeve 51 floats on the oil surface. As the liquid level drops, it can gradually block the oil inlet 42, thereby reducing the intake of air and preventing it from affecting the absorption of oil at low liquid levels. A fixing ring 61 is fixed to the extension pipe 41, and a limiting rope 62 is fixed between the fixing ring 61 and the sleeve 51. This rope can limit the upward and downward movement of the sleeve 51 to prevent it from falling off. A sealing ring 72 is used to seal the connection between the extension pipe 41 and the sleeve 51.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hydraulic drive device for unloading oil loading arms of a train, comprising a column (11); an inner arm (12) is installed on the top of the column (11), an outer arm (13) is rotatably connected to the end of the inner arm (12), a vertical pipe (14) is rotatably connected to the end of the outer arm (13), a submersible pump (15) is fixedly installed at the bottom of the vertical pipe (14), and a balancer (16) is installed between the inner arm (12) and the outer arm (13); Its features are: An ear piece (17) is fixedly connected to the inner arm (12), a clamp seat (18) is fixedly connected to the outer arm (13), a hydraulic cylinder (19) is hinged to the clamp seat (18), the telescopic end of the hydraulic cylinder (19) is hinged to the ear piece (17), and a control valve group (2) for controlling the telescopic extension of the hydraulic cylinder (19) is installed on the column (11).

2. The hydraulic drive device for unloading oil arms on trains according to claim 1, characterized in that: The control valve group (2) includes an operating valve, a relief valve, a hydraulic ball valve, and a pressure gauge.

3. The hydraulic drive device for unloading oil arms on trains according to claim 1, characterized in that: The top end of the vertical tube (14) is fixed with a sealing cap (3), and a sight glass is installed on the sealing cap (3).

4. The hydraulic drive device for unloading oil arms on trains according to claim 1, characterized in that: The oil suction end of the submersible pump (15) is fixedly connected to an extension pipe (41), and multiple oil inlet grooves (42) are opened on the side of the extension pipe (41).

5. The hydraulic drive device for unloading oil loading arms according to claim 4, characterized in that: The extension tube (41) is fitted with a sleeve (51), and the sleeve (51) and the extension tube (41) are slidably fitted together. A hollow floating ring (52) is fixedly connected to the bottom of the sleeve (51).

6. The hydraulic drive device for unloading oil arms on trains according to claim 5, characterized in that: The top end of the extension tube (41) is fixedly connected to a fixing ring (61), and a limiting rope (62) is fixedly connected to the fixing ring (61). The bottom end of the limiting rope (62) is fixedly connected to the top end of the sleeve (51).

7. The hydraulic drive device for unloading oil arms on trains according to claim 5, characterized in that: The top end of the sleeve (51) is provided with a sealing groove (71), and a sealing ring (72) is installed inside the sealing groove (71). The sealing ring (72) can seal the sliding gap between the sleeve (51) and the extension tube (41).

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