Hand-operated telescopic vertical pipe

Abstract

The utility model relates to the technical field of fluid loading special equipment, in particular to a hand-operated telescopic vertical pipe which comprises a vertical pipe body, the vertical pipe body comprises an upper vertical pipe section, a middle vertical pipe section and a lower vertical pipe section, the upper vertical pipe section and the middle vertical pipe section are fixed through a bolt, and the lower vertical pipe section is sleeved on the outer side of the middle vertical pipe section in a sliding mode. A connecting plate is welded and fixed to the top end of the upper-end vertical pipe, and a hand-shaking lifting mechanism used for controlling the connecting block is movably assembled on the connecting plate. The size of the hand-operated telescopic vertical pipe can be adjusted in a telescopic mode, the vertical pipe can be switched into different lengths by shaking the lifting mechanism with hands, and the hand-operated telescopic vertical pipe is suitable for tank cars of different sizes. An eccentric shaft is arranged in the hand-shaking lifting mechanism, so that the steel wire rope can be suspended at any position; a pipe cap opening is formed in the bottom of the lower-section vertical pipe, the function of connecting a steel wire rope is achieved, and loading media can be buffered.

Description

Technical Field

[0001] The utility model relates to the technical field of special equipment for fluid loading, in particular to a hand-cranked telescopic drop pipe. Background Art

[0002] Fluid loading arms are industrial products developed in China in recent years, and are mainly used for loading normal temperature fluids in the petrochemical industry. Generally, oil loading operations require inserting a vertical pipe near the bottom of the tank, and then performing underwater loading operations. This will inevitably make the vertical pipe very long, which will not only increase the operating torque, but also make it difficult to pull the vertical pipe out of the tank truck after loading is completed. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the length of the transmission vertical pipe cannot be adjusted, the application scope is relatively limited, and the use is very inconvenient.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a hand-cranked telescopic drop pipe, comprising a drop pipe body, the drop pipe body comprising an upper drop pipe, a middle drop pipe and a lower drop pipe, the upper drop pipe and the middle drop pipe are fixed by bolts, the lower drop pipe is slidably sleeved on the outside of the middle drop pipe, a pipe cap is welded and fixed at the bottom opening of the lower drop pipe, a connecting block is installed at the bottom of the pipe cap, a connecting plate is welded and fixed at the top end of the upper drop pipe, and a hand-cranked lifting mechanism for controlling the connecting block is movably assembled on the connecting plate.

[0005] The hand-cranked lifting mechanism includes a shell fixed on a connecting plate, a right cover plate fixed on one side of the shell, a left cover plate fixed on the other side of the shell, an eccentric shaft, a handle connecting plate fixed on the outside of the eccentric shaft, a handle movably mounted on the outer end of the handle connecting plate, an external gear mounted on the eccentric shaft, an internal gear sleeved on the outside of the external gear, an inner frame movably assembled in a groove on the inner side of the right cover plate, and a pulley fixed on one side of the internal gear.

[0006] The connecting block and the rope wheel are connected through a steel wire rope.

[0007] The maximum adjustment distance of the lower vertical pipe is 2.5 meters.

[0008] Both ends of the eccentric shaft are sleeved with nylon sleeves at the connection ends with the right cover plate and the left cover plate.

[0009] A lateral opening is provided on the outer side of the lower section vertical pipe corresponding to the position of the pipe cap opening.

[0010] The beneficial effects of the utility model are:

[0011] (1) The hand-cranked telescopic drop pipe of the utility model can be adjusted in size. The drop pipe can be switched to different lengths by manually cranking the lifting mechanism, and is suitable for tank trucks of different sizes;

[0012] (2) An eccentric shaft is arranged inside the hand-cranked lifting mechanism, so that the wire rope can be suspended at any position;

[0013] (3) A pipe cap is provided at the bottom of the lower vertical pipe, which not only serves to connect the wire rope but also can buffer the loading medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is the front view of the utility model.

[0016] Figure 2 It is a side view of the utility model.

[0017] Figure 3 It is a schematic diagram of the internal structure of the hand-cranked lifting mechanism in the utility model.

[0018] Figure 4 yes Figure 3 Cross-sectional view at the AA position. DETAILED DESCRIPTION

[0019] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Figure 1 , Figure 2 , Figure 3 and Figure 4 A hand-cranked telescopic drop pipe shown in the figure comprises a drop pipe body, wherein the drop pipe body comprises an upper drop pipe 1, a middle drop pipe 2 and a lower drop pipe 3, the upper drop pipe 1 and the middle drop pipe 2 are fixed by bolts, the lower drop pipe 3 is slidably sleeved on the outside of the middle drop pipe 2, a pipe cap opening 4 is welded and fixed at the bottom opening position of the lower drop pipe 3, a connecting block 5 is installed at the bottom of the pipe cap opening 4, a connecting plate 6 is welded and fixed at the top end of the upper drop pipe 1, and a hand-cranked lifting mechanism 7 for controlling the connecting block 5 is movably assembled on the connecting plate 6.

[0022] The hand-cranked lifting mechanism 7 includes a shell 8 fixed on the connecting plate 6, a right cover plate 9 fixed on one side of the shell 8, a left cover plate 10 fixed on the other side of the shell 8, an eccentric shaft 11, a handle connecting plate 12 fixed on the outside of the eccentric shaft 11, a handle 13 movably mounted on the outer end of the handle connecting plate 12, an external gear 14 mounted on the eccentric shaft 11, an internal gear 15 sleeved on the outside of the external gear 14, an inner frame 16 movably assembled in the inner groove of the right cover plate 9 and a pulley 17 fixed on one side of the internal gear 15.

[0023] In order to cooperate with the control, the connecting block 5 and the rope wheel 17 are connected by a steel wire rope 18.

[0024] The hand-cranked lifting mechanism 7 uses an eccentric gear mechanism to enable the lower section of the vertical pipe 3 to hover at any position during the ascending or descending process, and the lower section of the vertical pipe 3 will not descend after the handle 13 is released.

[0025] The principle of the eccentric gear mechanism: the eccentric shaft 11 is driven to rotate by shaking the handle 13, and the rotation of the eccentric shaft 11 drives the outer gear 14 to roll in the inner gear 15, and the inner frame 16 makes a linear motion in the inner groove of the right cover plate 9. If the wire rope 18 is pulled to drive the rotation of the rope wheel 17, due to the existence of the inner frame 16 and the right cover plate 9, the torque on the circumference of the rope wheel 17 is balanced internally, so the wire rope can be suspended at any position.

[0026] In order to facilitate coordination and adjustment, the maximum adjustment distance of the lower vertical pipe 3 is 2.5 meters.

[0027] In order to prevent static electricity and improve durability, both ends of the eccentric shaft 11 connected to the right cover plate 9 and the left cover plate 10 are sleeved with nylon sleeves 19 .

[0028] In order to facilitate operation and later maintenance, a lateral opening 20 is provided on the outer side of the lower vertical pipe 3 corresponding to the pipe cap opening 4 .

[0029] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A hand-cranked telescopic drop pipe, comprising a drop pipe body, characterized in that: The vertical pipe body comprises an upper vertical pipe (1), a middle vertical pipe (2) and a lower vertical pipe (3); the upper vertical pipe (1) and the middle vertical pipe (2) are fixed by bolts; the lower vertical pipe (3) is slidably sleeved on the outer side of the middle vertical pipe (2); a pipe cap opening (4) is welded and fixed at the bottom opening of the lower vertical pipe (3); a connecting block (5) is installed at the bottom of the pipe cap opening (4); a connecting plate (6) is welded and fixed at the top end of the upper vertical pipe (1); a hand-cranked lifting mechanism (7) for controlling the connecting block (5) is movably mounted on the connecting plate (6).

2. The hand-operated telescopic drop tube according to claim 1 is characterized in that: The hand-cranked lifting mechanism (7) comprises a housing (8) fixed on a connecting plate (6), a right cover plate (9) fixed on one side of the housing (8), a left cover plate (10) fixed on the other side of the housing (8), an eccentric shaft (11), a handle connecting plate (12) fixed on the outside of the eccentric shaft (11), a handle (13) movably mounted on the outer end of the handle connecting plate (12), an outer gear (14) mounted on the eccentric shaft (11), an inner gear (15) sleeved on the outer side of the outer gear (14), an inner frame (16) movably mounted in a groove on the inner side of the right cover plate (9), and a rope pulley (17) fixed on one side of the inner gear (15).

3. The hand-operated telescopic drop tube according to claim 2 is characterized in that: The connecting block (5) and the rope wheel (17) are connected via a steel wire rope (18).

4. The hand-operated telescopic drop tube according to claim 1 is characterized in that: The maximum adjustment distance of the lower vertical pipe (3) is 2.5 meters.

5. The hand-operated telescopic drop tube according to claim 2 is characterized in that: Both ends of the eccentric shaft (11) located at the connection ends with the right cover plate (9) and the left cover plate (10) are sleeved with nylon sleeves (19).

6. The hand-operated telescopic drop tube according to claim 1 is characterized in that: A lateral opening (20) is provided on the outer side of the lower section vertical pipe (3) at a position corresponding to the pipe cap opening (4).

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