Pneumatic auxiliary loading arm

Abstract

The utility model discloses a pneumatic auxiliary loading arm, which belongs to the technical field of fluid loading and unloading equipment and comprises a stand column, a loading arm inlet pipe, a mounting plate, a rotary cylinder, a loading arm vertical shaft, a loading arm inner arm, a loading arm outer arm, a loading arm vertical pipe, a rotary joint and an operation button device. The rotating air cylinder is connected with a shaft hole of the crane pipe vertical shaft and drives the crane pipe vertical shaft to rotate, the crane pipe inlet pipe is fixed to the stand column in a welded mode so as to support the crane pipe pipeline, and the crane pipe inlet pipe, the crane pipe vertical shaft, the crane pipe inner arm, the crane pipe outer arm and the crane pipe vertical pipe are connected through rotating joints to form the multi-joint automatic rotating crane pipe pipeline. The operation button device controls a gas circuit system of the rotating cylinder, forward and reverse rotation of the rotating cylinder is achieved, extending and retracting actions of the crane pipe are achieved, the technical problem that manual pulling is needed for operation of a top-loading type loading and unloading arm is solved, and the loading and unloading arm is mainly applied to fluid loading and unloading of tank trucks.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid loading and unloading equipment, and particularly relates to a pneumatic-assisted upper loading loading arm. Background Technique

[0002] A fluid loading arm is a movable device that uses a rotary joint to connect with a rigid pipe and an elbow to realize the transfer of liquid medium between a train or a truck tank car and a storage and transportation pipeline on a trestle, replacing the traditional hose connection. At present, fluid loading arms are used in loading yards such as receiving stations, peak shaving stations, and transfer stations to complete the fluid loading operation. As a key device connecting the on-site storage tank with the tank car or tank container, especially the upper loading type loading arm, it usually requires operators to pull the loading arm to complete the vehicle connection work, which has the problems of high operation risk and large labor intensity. Content of the Utility Model

[0003] Purpose of the utility model: The purpose of the utility model is to provide a pneumatic-assisted upper loading loading arm to solve the technical problem that the upper loading and unloading arm needs to be manually pulled during operation.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: A pneumatic-assisted upper loading loading arm includes a column, a loading arm inlet pipe, a mounting plate, a rotary cylinder, a loading arm vertical shaft, a loading arm inner arm, a loading arm outer arm, a loading arm vertical pipe, a rotary joint, and an operation button device;

[0005] The mounting plate is installed on the column and then connected to the rotary cylinder. The rotary cylinder is connected to the shaft hole of the loading arm vertical shaft to drive the loading arm vertical shaft to rotate. The loading arm inlet pipe is fixed to the column by welding to support the loading arm pipeline;

[0006] The loading arm inlet pipe, the loading arm vertical shaft, the loading arm inner arm, the loading arm outer arm, and the loading arm vertical pipe are connected by a rotary joint to form a loading arm pipeline with multiple joints that can rotate automatically;

[0007] The operation button device controls the air circuit system of the rotary cylinder to realize the forward and reverse rotation of the rotary cylinder and the extension and retraction actions of the loading arm.

[0008] Further: It also includes a spring cylinder balance mechanism for keeping the loading arm outer arm balanced. One end of the spring cylinder balance mechanism is installed on the connecting plate of the rotary joint of the loading arm outer arm, and the other end is installed on the loading arm outer arm, so that the loading arm outer arm can maintain balance at any position.

[0009] Further: The loading arm vertical pipe is connected to the connecting plate by a connecting rod, and the connecting plate, the connecting rod, and the loading arm outer arm form a parallelogram mechanism. When the loading arm outer arm tilts up or down, it can ensure that the loading arm vertical pipe remains vertical, which is convenient for extending into the tank mouth of the tank car.

[0010] Further: The gas circuit system includes a loading arm extension button, a loading arm retraction button, and a pneumatic three-position five-way valve, and the pneumatic three-position five-way valve is controlled by the loading arm extension button and the loading arm retraction button;

[0011] The gas circuit system further includes a manual two-position six-way valve, and the manual two-position six-way valve is used to disconnect and release the gas in the rotating cylinder of the Qilu system.

[0012] Compared with the prior art, the present utility model has the following advantages: By adding a gas circuit system, the operator can rotate the rotating cylinder by pressing the loading arm extension button and the loading arm retraction button. The rotation of the rotating cylinder drives the rotation of the loading arm vertical shaft, reducing the labor intensity of the operator and improving the safety of on-site loading. It has good applicability and popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the structural diagram of the present utility model;

[0014] Figure 2 is the side view of the present utility model;

[0015] Figure 3 is the present utility model Figure 1 Partial enlarged view at A;

[0016] Figure 4 is the first circuit diagram of the gas circuit system of the present utility model;

[0017] Figure 5 is the second circuit diagram of the gas circuit system of the present utility model;

[0018] Figure 6 is the third circuit diagram of the gas circuit system of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the first embodiment of the present utility model, as Figures 1 - 6As shown in the figure, a pneumatic-assisted upper loading loading arm includes a column 13, a loading arm inlet pipe 1, a mounting plate 2, a rotary cylinder 3, a loading arm vertical shaft 4, a loading arm inner arm 5, a loading arm outer arm 9, a loading arm vertical pipe 10, a rotary joint 11, and an operation button device 12;

[0022] The mounting plate 2 is installed on the column 13 and then connected to the rotary cylinder 3. The rotary cylinder 3 is connected to the loading arm vertical shaft 4 through a shaft hole to drive the loading arm vertical shaft 4 to rotate. The loading arm inlet pipe 1 is fixed to the column 13 by welding to support the loading arm pipeline;

[0023] The loading arm inlet pipe 1, the loading arm vertical shaft 4, the loading arm inner arm 5, the loading arm outer arm 9, and the loading arm vertical pipe 10 are connected through a rotary joint 11 to form a loading arm pipeline with multi-joint automatic rotation;

[0024] The operation button device 12 controls the pneumatic circuit system of the rotary cylinder 3 to realize the forward and reverse rotation of the rotary cylinder and the extension and retraction actions of the loading arm;

[0025] A spring cylinder balance mechanism 6 for maintaining the balance of the loading arm outer arm 9. One end of the spring cylinder balance mechanism 6 is installed on the connecting plate 7 of the rotary joint 11 of the loading arm outer arm 9, and the other end is installed on the loading arm outer arm 9, so that the loading arm outer arm 9 can maintain balance at any position;

[0026] The loading arm vertical pipe 10 is connected to the connecting plate 7 through a connecting rod 8, and the connecting plate 7, the connecting rod 8, and the loading arm outer arm 9 form a parallelogram mechanism. When the loading arm outer arm tilts up or down, it can ensure that the loading arm vertical pipe 10 remains vertical, facilitating insertion into the tank truck manhole;

[0027] The pneumatic circuit system includes a loading arm extension button 14 and a loading arm retraction button 15, and a pneumatic three-position five-way valve 16, which is controlled by the loading arm extension button 14 and the loading arm retraction button 15;

[0028] The pneumatic circuit system also includes a manual two-position six-way valve 17, which is used to disconnect the Qilu system to release the gas in the rotary cylinder 3.

[0029] By adopting the above technical solutions, the implementation mode of the pneumatic circuit system of the present utility model is as follows:

[0030] When the manual two-position six-way valve 17 is pressed, the interfaces at both ends of the rotary cylinder 3 are directly open to the air, losing the air source. In this way, the gas in the rotary cylinder 3 can be released when a fault occurs in the pneumatic circuit, facilitating manual operation of the loading arm;

[0031] Combined with Figure 5 , when the loading arm extension button 14 is pressed, the left-position pneumatic circuit of the pneumatic three-position five-way valve 16 is connected, realizing the extension movement of the rotary cylinder 3, and then driving the rotary cylinder 3 to rotate forward, ultimately realizing the extension action of the loading arm;

[0032] Combined with Figure 6 When the loading arm recovery button 15 is pressed, the right air path of the pneumatic three-position five-way valve 16 is connected, realizing the recovery movement of the rotary cylinder 3, thereby driving the rotary cylinder 3 to rotate in the reverse direction, and finally realizing the recovery action of the loading arm.

[0033] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. A pneumatically assisted upper loading crane pipe, comprising a column (13), a crane pipe inlet pipe (1), a mounting plate (2), a rotary cylinder (3), a crane pipe vertical shaft (4), a crane pipe inner arm (5), a crane pipe outer arm (9), a crane pipe vertical pipe (10), a rotary joint (11) and an operating button device (12), It is characterized by: The mounting plate (2) is mounted on the column (13) and then connected to the rotating cylinder (3). The rotating cylinder (3) is connected to the shaft hole of the crane pipe vertical shaft (4) to drive the crane pipe vertical shaft (4) to rotate. The crane pipe inlet pipe (1) is fixed to the column (13) by welding, thereby supporting the crane pipe pipeline. The crane pipe inlet pipe (1), the crane pipe vertical shaft (4), the crane pipe inner arm (5), the crane pipe outer arm (9) and the crane pipe vertical pipe (10) are connected via a rotary joint (11) to form a crane pipe pipeline with multiple joints and automatic rotation; The operating button device (12) controls the air path system of the rotary cylinder (3), realizes the forward and reverse rotation of the rotary cylinder, and realizes the extension and retraction of the crane pipe.

2. The pneumatically assisted upper loading crane pipe according to claim 1, characterized in that: The invention also comprises a spring cylinder balancing mechanism (6) for maintaining the balance of the crane tube outer arm (9), wherein one end of the spring cylinder balancing mechanism (6) is mounted on a connecting plate (7) of a rotating joint (11) of the crane tube outer arm (9), and the other end is mounted on the crane tube outer arm (9), so that the crane tube outer arm (9) can maintain balance at any position.

3. The pneumatically assisted upper loading crane pipe according to claim 2, characterized in that: The crane pipe vertical pipe (10) is connected to the connecting plate (7) via a connecting rod (8), and the connecting plate (7), the connecting rod (8), and the crane pipe outer arm (9) form a parallelogram structure. When the crane pipe outer arm is raised or lowered, the crane pipe vertical pipe (10) can be kept in a vertical state, so that it is convenient to extend into the tank mouth of the tank truck.

4. The pneumatically assisted upper loading crane pipe according to claim 3 is characterized in that: The gas circuit system comprises a crane pipe extension button (14), a crane pipe recovery button (15), and a pneumatic three-position five-way valve (16), and the pneumatic three-position five-way valve (16) is controlled by the crane pipe extension button (14) and the crane pipe recovery button (15).

5. The pneumatically assisted upper loading crane pipe according to claim 4, characterized in that: The gas circuit system also includes a manual two-position six-way valve (17), which is used to disconnect the Qilu system and release the gas in the rotating cylinder (3).

Images