Semi-trailer tank truck with pumping-in and pumping-out functions

Abstract

The utility model discloses a semi-trailer tank truck with pump-in and pump-out functions, which comprises a tank body, a lifting support leg and an integral pump support, a cycloid hydraulic motor and a gear pump are mounted on the integral pump support and are flexibly connected through a plum-blossom-shaped elastic coupling, and the pump-in and pump-out functions of the pump-in and pump-out functions of the pump-in and pump-out functions of the pump-in and pump-out functions of the pump-in and pump-out functions are achieved. An inlet pipeline system and an outlet pipeline system are arranged at the two ends of the gear pump, the cycloid hydraulic motor is connected with a multi-way valve through two first hydraulic rubber pipes and an oil pipe connector, an operation handle is assembled on the multi-way valve, and the multi-way valve is connected with a hydraulic steel pipe through two second hydraulic rubber pipes. The hydraulic pump-in and pump-out device is reasonable in structural design, the pump-in and pump-out functions can be achieved through a tractor (additionally provided with a hydraulic power unit) or a hydraulic pump station by additionally arranging the hydraulic pump-in and pump-out device on the semi-trailer liquid tank vehicle, the requirements of special customer groups, field occasions and emergency situations are met, and the hydraulic pump-in and pump-out functions are achieved. And the functions of special vehicle products are expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid tank truck transportation technical field especially relates to a half -hitch liquid tank truck with pump in and pump out function. BACKGROUND

[0002] The half -hitched liquid tank truck is a kind of commercial vehicle specially used for transporting liquid goods, which is composed of a tractor and a detachable tank.

[0003] Many half -hitched liquid tank transportation vehicles on the existing market do not have pump in and pump out device, and the filling of fluid into the tank can be generally operated in oil depot etc., and the delivery of fluid in the tank can be generally only assisted by the gravity of fluid itself to unload, which cannot meet the actual demand for shortening the unloading time (for example, time limit for vehicle entry and exit place) and some unpowered field occasions (for example, field rescue, field water adding, filling fuel from low altitude to high altitude and the like), and some emergency occasions such as the liquid tank truck trailer before the accident on the road need to be pumped out to allow towing, and the half -hitched liquid tank vehicle without pump in and pump out device cannot realize automatic pumping of liquid in the half -hitched liquid tank of the accident, and manual scooping is unsafe (some medium is toxic) and too slow. Therefore, we propose a half -hitched liquid tank vehicle with pump in and pump out function to solve the above problems. SUMMARY

[0004] The utility model aims at solving the problems in prior art, and provides a half -hitched liquid tank vehicle with pump in and pump out function, which can realize pump in and pump out function by installing hydraulic drive pump in and pump out device on the half -hitched liquid tank vehicle, meet the demand of special customer group and field occasion, emergency situation, and broaden the function of special vehicle product.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A half -hitched liquid tank vehicle with pump in and pump out function, comprising a tank body, lifting legs and an integral pump support, a cycloidal hydraulic motor and a gear pump are installed on the integral pump support, the cycloidal hydraulic motor and the gear pump are flexibly connected through a plum blossom elastic coupling, inlet and outlet pipeline systems are arranged at both ends of the gear pump, the cycloidal hydraulic motor is connected with a multi-way valve through two first hydraulic rubber pipes and an oil pipe joint, an operating handle is assembled on the multi-way valve, the multi-way valve is connected with a hydraulic steel pipe through two second hydraulic rubber pipes, the hydraulic steel pipe is arranged at the front end of the liquid tank truck, two male and female quick couplings are welded at the front end of the hydraulic steel pipe, the inner part of the tank body is divided into five compartments, a lower-mounted filling and gravity unloading system is installed in each compartment, and an oil gas recovery system is installed in the tank body.

[0007] Preferably, the inlet and outlet pipeline system comprises filters connected at both ends of the gear pump through first pipelines, the other ends of the filters are connected with straight-through ball valves, shockproof pressure gauges are installed on the first pipelines between the filters and the straight-through ball valves, the other ends of the straight-through ball valves are connected with method Lan Yang ends, and the outer sides of the method Lan Yang ends are sleeved with plugs.

[0008] Preferably, the gear pump is installed on the integral pump support through bolts and nuts, two 90° elbows are arranged above the gear pump, a hydraulic motor support is arranged on the integral pump support, and the trochoidal hydraulic motor is installed on the hydraulic motor support through bolts and nuts.

[0009] Preferably, two protective covers are jointly arranged on the trochoidal hydraulic motor, the transmission shaft of the gear pump and the plum blossom elastic coupling, the two protective covers are folded upwards to form an integral cover, and a plurality of long small holes are formed in the protective cover.

[0010] Preferably, the bottom valve is installed in the tank bin, the bottom valve is connected with the transparent sight glass flange through the second pipeline, the transparent sight glass flange is connected with the API valve through bolts, and the API valve is selectively sleeved with the reducing joint.

[0011] Preferably, the oil gas recovery system comprises an oil gas recovery joint valve, the oil gas recovery joint valve is connected with the inside of the tank through a third pipeline, and the oil gas recovery joint valve is sleeved with a dustproof cover.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] By installing the pump-in and pump-out device driven by the hydraulic pressure on the semi-trailer liquid tank vehicle, the pump-in and pump-out function can be realized by using the tractor (another hydraulic power unit is additionally installed) or the hydraulic pump station, the needs of special customer groups, field occasions and emergency situations are met, the functions of the special vehicle product are widened. The used spare parts are not many and are conventional parts, the hydraulic driving mode has no electric spark, is safe and explosion-proof, and has good overload capacity of bearing load, the market needs of special occasions are met, the added value of the product is improved, and good economic benefits and popularization value are obtained. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A working principle diagram of a semi-trailer liquid tank vehicle with pump-in and pump-out functions (five-warehouse oil gas recovery) is provided for the utility model;

[0015] Figure 2 A general arrangement view of a semi-trailer liquid tank vehicle with pump-in and pump-out functions is provided for the utility model;

[0016] Figure 3 It is an installation position schematic view of the integral pump support, the cycloid hydraulic motor, the gear pump and the plum blossom elastic coupling.

[0017] Figure 4 It is an installation position schematic view of the tank body, the lifting leg and the integral pump support.

[0018] Figure 5 It is a structure schematic view of the hydraulic motor support.

[0019] Figure 6 It is a structure schematic view of the protective cover.

[0020] Figure 7 It is a structure schematic view of the integral pump support.

[0021] In the figure: 1, tank body; 2, lifting leg; 3, integral pump support; 4, cycloid hydraulic motor; 5, gear pump; 6, plum blossom elastic coupling; 7, first hydraulic rubber pipe; 8, oil pipe joint; 9, multi-way valve; 10, second hydraulic rubber pipe; 11, hydraulic steel pipe; 12, quick joint; 13, first pipeline; 14, filter; 15, square straight-through ball valve; 16, shock-resistant pressure gauge; 17, method Lan Yang end; 18, plug cover; 19, elbow; 20, hydraulic motor support; 21, protective cover; 22, long strip small hole; 23, bottom valve; 24, second pipeline; 25, transparent sight glass flange; 26, API valve; 27, reducing joint; 28, oil and gas recovery joint valve; 29, third pipeline; 30, dust cover. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] Referring to Figures 1-7 A semi-trailer tank truck with pump-in and pump-out functions, comprising a tank body 1, a lifting leg 2 and an integral pump support 3, referring to Figure 4 The integral pump support 3 is fastened at the rear of the lifting leg 2 through bolts and nuts, which meets the strength requirement and does not affect the use of the tractor, the cycloid hydraulic motor 4 and the gear pump 5 are installed on the integral pump support 3, the gear pump 5 is arranged at the rear of the lifting leg 2 instead of the front, which can avoid the interference and collision between the gear pump 5 and the tractor, and the position does not occupy the space of other accessories and is close to other pipelines of the tank body 1, which is convenient for operation and maintenance.

[0024] The system adopts the gear pump 5, which has the advantages of easy realization of forward and reverse rotation without affecting the service life of the pump (for example, the power input of other structure pumps is stipulated to have only one rotation direction, otherwise the pump cannot work or even be damaged), quick change of the direction of the inlet and outlet of the pumped fluid through the commutation of the external power input, realization of the conversion of the pumping and pumping-out directions, and meeting the conversion of the pumping and pumping-out functions under the condition of no pipeline change.

[0025] With reference to Figure 2 and Figure 3 , the cycloid hydraulic motor 4 and the gear pump 5 are flexibly connected through the plum blossom elastic coupling 6, and the cycloid hydraulic motor 4 is not directly connected with the gear pump 5 in a rigid manner, but is connected with the gear pump 5 through the plum blossom elastic coupling 6 as a transition connection, which has the advantages that the cycloid hydraulic motor 4 and the gear pump 5 cannot guarantee complete concentricity of the shafts, the plum blossom elastic coupling 6 can make up for such installation errors and reduce internal wear, and in addition, the plum blossom elastic coupling 6 can also reduce the noise generated during the operation of the two.

[0026] With reference to Figure 1 , the gear pump 5 is provided with inlet and outlet pipeline systems at both ends, the inlet and outlet pipeline systems include filters 14 connected at both ends of the gear pump 5 through first pipelines 13 respectively, the filters 14 can filter the fluid and prevent foreign matters and impurities from entering the gear pump 5 to cause the gear pump 5 to be stuck, the other end of the filter 14 is connected with a square straight-through ball valve 15, a shock pressure gauge 16 is installed on the first pipeline 13 between the filter 14 and the square straight-through ball valve 15, the shock pressure gauge 16 facilitates the observation of the fluid pressure in the pipeline, and the pipeline can be stopped in time to prevent the pipeline from being exploded in case of abnormality, and the other end of the square straight-through ball valve 15 is connected with a method Lan Yang end 17, and the method Lan Yang end 17 is provided with a plug cover 18 outside.

[0027] With reference to Figure 3 , Figure 5 and Figure 7 , the integral pump support 3 is formed by laser cutting, bending and shaping, and arc-shaped reinforcing plates are welded at both sides and the middle part is hole-excavated, which not only makes the integral pump support 3 more beautiful, but also enhances the overall strength of the integral pump support 3 and reduces the weight of the integral pump support 3, the gear pump 5 is installed on the integral pump support 3 through bolts and nuts, two 90° elbows 19 are arranged above the gear pump 5 to realize the turning of the pipeline layout, the integral pump support 3 is provided with a hydraulic motor support 20, the hydraulic motor support 20 is formed by laser cutting and welding of multiple steel plates to ensure the strength while reducing the cost, and the cycloid hydraulic motor 4 is installed on the hydraulic motor support 20 through bolts and nuts.

[0028] With reference to Figure 6The two protective covers 21 are symmetrically arranged on the transmission shaft of the cycloid hydraulic motor 4, the gear pump 5 and the plum blossom elastic coupling 6, and are folded to form an integral cover. The two protective covers 21 are connected by bolts to form an integral cover to completely wrap the above moving parts, thereby preventing injury to personnel and blocking foreign matter from winding. A plurality of long slits 22 are formed on the protective cover 21 to facilitate heat dissipation and observation of the internal structure. The protective cover 21 is formed by laser cutting and welding of multiple stainless steel plates to ensure strength while reducing cost. The two protective covers 21 are symmetrically arranged and folded to form an integral cover, which is convenient for installation and disassembly.

[0029] Referring to Figure 2 The cycloid hydraulic motor 4 is connected to the multi-way valve 9 through two first hydraulic rubber pipes 7 and an oil pipe joint 8. The multi-way valve 9 is provided with an operating handle, which can realize the reversing of the hydraulic oil circuit, thereby driving the forward and reverse rotation of the cycloid hydraulic motor 4. The forward and reverse rotation of the cycloid hydraulic motor 4 drives the forward and reverse rotation of the gear pump 5 through the plum blossom elastic coupling 6. The multi-way valve 9 is connected to the hydraulic steel pipe 11 through two second hydraulic rubber pipes 10. The hydraulic steel pipe 11 is arranged at the front end of the tanker. The hydraulic steel pipe 11 is arranged at the front of the semi-mounted tanker instead of a hose to prevent the hose from being lowered to cause interference with the towing vehicle. Two male and female quick couplings 12 are welded at the front end of the hydraulic steel pipe 11. The quick couplings 12 are used at the front end of the hydraulic steel pipe 11 at the front of the semi-mounted tanker instead of ordinary threaded couplings. The advantage is that the quick couplings 12 can be quickly connected and disconnected with the external hydraulic pipe (such as a towing vehicle or a hydraulic pump station) without using any tools, which is convenient for the towing vehicle to drive away and prevents the insertion of the oil inlet and outlet pipes.

[0030] Referring to Figure 1 The tank body 1 is divided into five compartments, and a bottom-loading filling and gravity unloading system is installed in each compartment. The bottom-loading filling and gravity unloading system includes a bottom valve 23 installed in the compartment of the tank body 1. The bottom valve 23 is connected to a transparent sight glass flange 25 through a second pipeline 24. The transparent sight glass flange 25 is connected to an API valve 26 through a bolt. The API valve 26 can be optionally sleeved with a reducing adapter 27. The API valve 26 can realize bottom-loading filling and gravity unloading. The transparent sight glass flange 25 can facilitate observation of the fluid condition of the API valve 26. The API valve 26 is sleeved with the reducing adapter 27 (which can also be removed). The reducing adapter 27 can convert the caliber and connect with the external pipeline. The bottom-loading filling is a liquid filling method. In this filling method, the filling port is located at the bottom of the container. During operation, the filling pipe is first inserted into the bottom of the container, and the liquid is filled from the bottom. Gravity unloading refers to a unloading method that utilizes the gravity of the material to unload it from the storage container or transportation equipment.

[0031] Referring to Figure 1The oil gas recovery system is arranged in the tank body 1, and the oil gas recovery system comprises an oil gas recovery joint valve 28, the oil gas recovery joint valve 28 is connected with the inside of the tank body 1 through a third pipeline 29, a dustproof cover 30 is sleeved on the oil gas recovery joint valve 28, the oil gas recovery system is arranged to recover oil gas in the tank body 1, prevent pollution to the environment by volatilization into the atmosphere, and in addition, the oil gas recovery channel must be opened during the lower filling and gravity unloading to prevent the tank body 1 from being deformed due to suction or inflation.

[0032] The function principle of the utility model can be described by the following operation modes:

[0033] In the utility model, the semi-trailer tank truck with the pump-in and pump-out function cooperates with the lower filling and gravity unloading system and the oil gas recovery system, and can perform lower filling and gravity unloading. When automatic extraction and filling of liquid in the semi-trailer tank truck are needed, the quick connector 12 is connected with the external hydraulic pipe, the method Lan Yang end 17 is connected with the inlet and outlet of the tank body 1, the multi-way valve 9 is provided with an operation handle, the hydraulic oil circuit can be reversed, the positive and negative rotation of the cycloid hydraulic motor 4 is driven, the positive and negative rotation of the cycloid hydraulic motor 4 reverses the positive and negative rotation of the gear pump 5 through the plum blossom elastic coupling 6, the direction of the fluid inlet and outlet of the pump can be quickly changed through the external power input, the direction conversion of the pump-in and pump-out is realized, and the extraction and discharge function conversion is realized under the condition that the pipeline is not changed.

[0034] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the utility model can make equivalent replacement or change within the technical range disclosed by the utility model, and all should be covered in the protection scope of the utility model.

Claims

1. A semi-trailer tank vehicle with pump-in and pump-out functions, comprising a tank body (1), lifting legs (2) and an integral pump support (3), characterized in that, The integral pump support (3) is provided with a cycloidal hydraulic motor (4) and a gear pump (5), the cycloidal hydraulic motor (4) and the gear pump (5) are flexibly connected through a plum elastic coupling (6), both ends of the gear pump (5) are provided with inlet and outlet pipeline systems, the cycloidal hydraulic motor (4) is connected with a multi-way valve (9) through two first hydraulic rubber pipes (7) and an oil pipe joint (8), the multi-way valve (9) is provided with an operating handle, the multi-way valve (9) is connected with a hydraulic steel pipe (11) through two second hydraulic rubber pipes (10), the hydraulic steel pipe (11) is arranged at the front end of the tank truck, two male and female quick couplings (12) are welded at the front end of the hydraulic steel pipe (11), the tank body (1) is internally divided into five compartments, each compartment is provided with a lower-mounted filling and gravity unloading system, and the tank body (1) is internally provided with an oil gas recovery system.

2. The semi-trailer tank vehicle with pump-in and pump-out functions according to claim 1, characterized in that, The inlet and outlet pipeline systems comprise filters (14) connected at both ends of the gear pump (5) through first pipelines (13), the other ends of the filters (14) are connected with square straight-through ball valves (15), shock-resistant pressure gauges (16) are additionally arranged on the first pipelines (13) between the filters (14) and the square straight-through ball valves (15), the other ends of the square straight-through ball valves (15) are connected with method Lan Yang ends (17), and the method Lan Yang ends (17) are externally provided with plugs (18).

3. The semi-trailer tank vehicle with pump-in and pump-out functions according to claim 1, characterized in that, The gear pump (5) is bolted and nutted on the integral pump support (3), the gear pump (5) is provided with two 90° elbows (19) above, the integral pump support (3) is provided with a hydraulic motor support (20), and the cycloidal hydraulic motor (4) is bolted and nutted on the hydraulic motor support (20).

4. The semi-trailer tank vehicle with pump-in and pump-out functions according to claim 1, characterized in that, Two protective covers (21) are jointly arranged on the transmission shafts of the cycloidal hydraulic motor (4) and the gear pump (5) and the plum elastic coupling (6), the two protective covers (21) are folded upwards to form an integral cover, and a plurality of long slot holes (22) are formed in the protective cover (21).

5. The semi-trailer tank vehicle with pump-in and pump-out functions according to claim 1, characterized in that, The lower-mounted filling and gravity unloading system comprises a bottom valve (23) mounted in the compartment of the tank body (1), the bottom valve (23) is connected with a transparent sight glass flange (25) through a second pipeline (24), the transparent sight glass flange (25) is bolted with an API valve (26), and the API valve (26) is selectively provided with a reducing joint (27) outside.

6. The semi-trailer tank vehicle with pump-in and pump-out functions according to claim 1, characterized in that, The oil gas recovery system comprises an oil gas recovery joint valve (28), the oil gas recovery joint valve (28) is connected with the inside of the tank body (1) through a third pipeline (29), and the oil gas recovery joint valve (28) is provided with a dustproof cover (30).

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