Truck cab lifting pump system device

Abstract

The invention relates to the technical field of cab lifting pumps, and discloses a lorry cab lifting pump system device which comprises an oil cylinder unit, an oil conveying pipe unit, an electric pump unit and an oil tank unit, and oil ways among the oil cylinder unit, the electric pump unit and the oil tank unit are communicated through the oil conveying pipe unit; according to the lorry cab lifting pump system device, the speed of directly driving the manual-electric integrated pump by the driving motor is reduced by additionally arranging the speed reducing mechanism, so that the oil suction and discharge stability is improved, and furthermore, a piston plate is arranged in the oil tank main body and is matched with a piston mechanism to control the internal pressure of the oil tank main body, so that the oil suction and discharge stability is improved. In the oil suction process, positive pressure is provided in an auxiliary mode to guarantee oil supply smoothness of the oil tank body, meanwhile, negative pressure is provided in the oil discharge process in an auxiliary mode to guarantee smooth backflow of hydraulic oil, and therefore the problem that in winter, the viscosity of the hydraulic oil is increased, and oil suction and discharge are difficult is solved.

Description

Technical Field

[0001] The invention relates to the technical field of cab lifting pumps, and more particularly to a cab lifting pump system device for a truck. Background Art

[0002] Hydraulic pumps are widely used machines in various industries, and their structures vary. Due to different application fields and functions, they are divided into many types. In the process of lifting or lowering the cab of a flat-head truck, a lifting pump is needed to complete it. A hydraulic power unit is needed to supply oil to the lifting pump. Currently, the market is divided into electric pumps, manual pumps, manual-electric integrated pumps, etc.

[0003] Among them, the manual pumps all use a single plunger and a single stroke to complete the oil suction and discharge actions. There are empty strokes and poor oil discharge continuity, which leads to large flow pulsation, poor stability during the lifting or lowering of the cab, large operating torque, and low lifting efficiency. Among them, the electric pumps all use small-diameter multi-plungers arranged radially and directly driven by a high-speed DC motor to complete high-speed oil suction and discharge actions. Under low temperature conditions in winter, the viscosity of the hydraulic oil increases. High-speed oil suction and discharge will cause empty suction due to the high viscosity of the hydraulic oil, which will lead to a long time for the lifting process of the cab and unstable lifting and swinging of the cab, which increases safety hazards while also aggravating component wear and battery power loss. Therefore, the existing lifting pump system needs to be structurally optimized. Summary of the invention

[0004] The invention provides a truck cab lifting pump system device, which solves the technical problems of empty suction and difficulty in oil suction and discharge occurring in the lifting process of the truck cab lifting pump in the related art.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A truck cab lifting pump system device comprises a cylinder unit, an oil pipe unit, an electric pump unit and an oil tank unit, wherein the oil pipe unit connects the oil circuits among the cylinder unit, the electric pump unit and the oil tank unit;

[0007] The electric pump unit comprises a driving motor, a speed reducing mechanism is provided at the output end of the driving motor, a hand-operated integrated pump is provided at the output end of the speed reducing mechanism, and the input end and the output end of the hand-operated integrated pump are respectively connected to the oil delivery pipe unit;

[0008] The oil tank unit includes an oil tank body and a control module unit, the oil tank body is filled with hydraulic oil, a first steering mechanism is arranged at the bottom of the control module unit, and an input end and an output end of the bottom of the first steering mechanism are respectively connected to the oil pipe unit;

[0009] A pressure regulating mechanism is arranged at the top of the inside of the oil tank body, a bubble discharge mechanism is arranged at the bottom of the pressure regulating mechanism, and a piston mechanism which is interconnected with the inside of the oil tank body is arranged at the outside of the oil tank body.

[0010] As a further optimization scheme of the present invention, the top of the control module unit is provided with an oil inlet port which is interconnected with the interior of the oil tank body, the interior of the control module unit is provided with a manual pump suction unit, the interior of the control module unit is provided with a transition oil chamber which is compatible with the first steering mechanism, and the transition oil chamber is interconnected with the bottom of the interior of the oil tank body.

[0011] As a further optimization scheme of the present invention, the pressure regulating mechanism includes an air bin sealed and connected to the top of the oil tank body, an exhaust port is arranged on the top of the air bin, a plurality of groups of springs are evenly distributed on the bottom of the air bin, a piston plate is commonly arranged on the bottom of the plurality of groups of springs, a sealing ring is arranged between the outer side of the piston plate and the inner wall of the oil tank body, and the outer side of the piston plate is sealed and fitted with the inner wall of the oil tank body, and two groups of bubble discharge mechanisms are symmetrically arranged on the bottom of the piston plate.

[0012] As a further optimization scheme of the present invention, the bubble discharge mechanism includes a mounting connecting rod hinged to the bottom of the piston plate, and several groups of mounting shafts are installed on the bearings at both ends of the mounting connecting rod. Spoilers are symmetrically arranged on the outer side of the mounting shaft close to one end of the mounting connecting rod, and exhaust needles are evenly distributed on the other end of the outer side of the mounting shaft. Support shafts are penetrated at both ends of the bottom of the mounting connecting rod, and a scraper is arranged on the outer side of the support shaft, and a torsion spring is jointly arranged between the scraper and the outer side of the support shaft.

[0013] As a further optimization scheme of the present invention, the bottom of the scraper is in contact with the bottom of the oil tank body, and sewage ports are symmetrically arranged at both ends of the bottom of the oil tank body. The side of the scraper away from the mounting connecting rod corresponds to the sewage port, and a sewage control unit is arranged at the bottom of the sewage port.

[0014] As a further optimization scheme of the present invention, when the mounting connecting rod moves downward, the bottom of the scraper floats upward due to the resistance of the hydraulic oil. When the mounting connecting rod moves upward, the top of the scraper moves downward due to the resistance of the hydraulic oil and fits against the bottom of the tank body.

[0015] As a further optimization scheme of the present invention, the piston mechanism includes an oil transfer bin arranged at the bottom of the interior of the oil tank body, the input end of the oil transfer bin is provided with an oil inlet, and the oil inlet is a funnel structure, the output end of the oil transfer bin is communicated with the interior of the first steering mechanism, a transmission shaft extending to the interior of the oil transfer bin is provided on the outside of the oil tank body, a mechanical sealing structure is provided between the transmission shaft and the oil tank body, an impeller is provided at one end of the transmission shaft extending to the interior of the oil transfer bin, and the output end of the oil inlet corresponds to the impeller.

[0016] As a further optimization scheme of the present invention, a cam is provided at one end of the transmission shaft located on the outside of the oil tank body, a hinged rod is provided on one side of the cam, a piston compartment is provided at the front end of the oil tank body, a piston cylinder is provided inside the piston compartment, a piston rod is provided at the bottom of the piston cylinder, and the bottom of the piston rod is hinged to the hinged rod.

[0017] As a further optimization scheme of the present invention, a second steering mechanism is arranged on the top of the piston chamber, a second air pipe extending into the interior of the air chamber is arranged at one end of the second steering mechanism, and a first air pipe connected to the outside is arranged at the other end of the second steering mechanism.

[0018] As a further optimization scheme of the present invention, the air pressure between the bottom of the air bin and the top of the piston plate is P1, the air pressure between the bottom of the piston plate and the bottom of the inside of the oil tank body is P2, and the external atmospheric pressure is P. When the electric pump unit electrically extracts or the control module unit manually extracts the hydraulic oil inside the oil tank body to supply oil to the cylinder unit, P2>P1>P. When the electric pump unit or the control module unit completes the extraction and opens the exhaust port, P2=P>P1. When the exhaust port is closed and the electric pump unit or the control module unit reversely transports the hydraulic oil to the inside of the oil tank body, P2 and P1 gradually increase and return to the state of P2>P1>P.

[0019] The beneficial effects of the present invention are as follows: the present invention reduces the rate at which the drive motor directly drives the integrated hand-held pump by adding a speed reduction mechanism, thereby improving the stability of oil suction and discharge. Furthermore, by arranging a piston plate inside the oil tank body and cooperating with the piston mechanism to control the internal pressure of the oil tank body as a whole, during the oil suction process, positive pressure is assisted in providing to ensure the smooth oil supply of the oil tank body. At the same time, during the oil discharge process, negative pressure is assisted in providing to ensure the smooth reflux of the hydraulic oil, thereby improving the problem of increased viscosity of the hydraulic oil and difficulty in oil suction and discharge in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0021] Figure 2It is an enlarged schematic diagram of the structure of the oil tank unit in the present invention;

[0022] Figure 3 It is an enlarged cross-sectional view of the structure of the oil tank unit in the present invention;

[0023] Figure 4 It is an enlarged cross-sectional view of the structure of the piston mechanism in the present invention;

[0024] Figure 5 It is an enlarged schematic diagram of the structure of the bubble discharge mechanism in the present invention;

[0025] Figure 6 It is an enlarged cross-sectional view of the connection structure of the scraper in the present invention;

[0026] Figure 7 It is a schematic diagram of the internal structure position and pressure state of the oil tank unit in the present invention when it is in the initial state of oil supply;

[0027] Figure 8 It is a schematic diagram of the internal structure position and pressure state of the oil tank unit in the present invention when the oil supply is completed;

[0028] Fig. 9 It is a schematic diagram of the internal structure position and pressure state when the oil tank unit of the present invention is in the oil return state.

[0029] In the figure:

[0030] 100, oil cylinder unit; 200, oil pipeline unit; 300, electric pump unit; 400, oil tank unit;

[0031] 301. Hand-operated integrated pump; 302. Speed ​​reduction mechanism; 303. Driving motor;

[0032] 401, oil tank body; 402, sewage control unit; 403, control module unit; 404, first steering mechanism; 405, piston mechanism; 406, oil inlet port; 407, exhaust port; 408, air chamber; 409, bubble exhaust mechanism; 410, piston plate; 411, spring; 412, sewage port;

[0033] 4051, piston bin; 4052, oil delivery bin; 4053, oil inlet; 4054, transmission shaft; 4055, cam; 4056, hinged rod; 4057, piston rod; 4058, impeller; 4059, piston cylinder; 40510, first air pipe; 40511, second steering mechanism; 40512, second air pipe;

[0034] 4091. Install connecting rod; 4092. Install shaft; 4093. Scraper; 4094. Spoiler; 4095. Exhaust needle; 4096. Support shaft; 4097. Torsion spring. DETAILED DESCRIPTION

[0035] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0036] Example 1

[0037] like Figure 1 As shown, a truck cab lifting pump system device includes a cylinder unit 100, an oil pipe unit 200, an electric pump unit 300 and an oil tank unit 400, wherein the oil pipe unit 200 connects the oil circuits among the cylinder unit 100, the electric pump unit 300 and the oil tank unit 400;

[0038] The electric pump unit 300 includes a driving motor 303, a speed reducing mechanism 302 is provided at the output end of the driving motor 303, a hand-operated integrated pump 301 is provided at the output end of the speed reducing mechanism 302, and the input end and the output end of the hand-operated integrated pump 301 are respectively connected to the oil delivery pipe unit 200;

[0039] like Figure 2 As shown, the oil tank unit 400 includes an oil tank body 401 and a control module unit 403. The interior of the oil tank body 401 is filled with hydraulic oil. A first steering mechanism 404 is provided at the bottom of the control module unit 403. The input end and the output end at the bottom of the first steering mechanism 404 are respectively communicated with the oil delivery pipe unit 200. The top of the control module unit 403 is provided with an oil inlet port 406 communicated with the interior of the oil tank body 401. A manual pump unit is provided inside the control module unit 403. A transition oil chamber adapted to the first steering mechanism 404 is provided inside the control module unit 403, and the transition oil chamber is communicated with the bottom of the interior of the oil tank body 401.

[0040] like Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, a pressure regulating mechanism is provided at the top of the inside of the oil tank body 401, and a bubble discharge mechanism 409 is provided at the bottom of the pressure regulating mechanism. The pressure regulating mechanism includes an air chamber 408 which is sealed and connected to the top of the oil tank body 401, and an exhaust port 407 is provided at the top of the air chamber 408. A plurality of groups of springs 411 are evenly distributed at the bottom of the air chamber 408, and a piston plate 410 is commonly provided at the bottom of the plurality of groups of springs 411. A sealing ring is provided between the outer side of the piston plate 410 and the inner wall of the oil tank body 401, and the outer side of the piston plate 410 is sealed and fitted with the inner wall of the oil tank body 401. The bubble discharge mechanism 409 includes a mounting connecting rod 4091 which is hinged to the bottom of the piston plate 410, and a plurality of groups of mounting shafts 4092 are installed on bearings at both ends of the mounting connecting rod 4091. Spoilers 4094 are symmetrically provided on the outer side of the mounting shaft 4092 near one end of the mounting connecting rod 4091. 2, exhaust needles 4095 are evenly distributed on the other end of the outer side, support shafts 4096 are provided through both ends of the bottom of the mounting connecting rod 4091, and a scraper 4093 is provided on the outer side of the support shaft 4096. A torsion spring 4097 is provided between the scraper 4093 and the outer side of the support shaft 4096. The bottom of the scraper 4093 fits with the bottom of the inside of the oil tank body 401. Drain ports 412 are symmetrically provided at both ends of the bottom of the oil tank body 401. The side of the scraper 4093 away from the mounting connecting rod 4091 corresponds to the drain port 412. A drain control unit 402 is provided at the bottom of the drain port 412. When the mounting connecting rod 4091 moves downward, the bottom of the scraper 4093 floats upward due to the resistance of the hydraulic oil. When the mounting connecting rod 4091 moves upward, the top of the scraper 4093 moves downward due to the resistance of the hydraulic oil and fits with the bottom of the inside of the oil tank body 401.

[0041] like Figures 2 to 4 , Figures 7 to 9As shown, a piston mechanism 405 is provided on the outside of the oil tank body 401 and is interconnected with the inside of the oil tank body 401. The piston mechanism 405 includes an oil delivery bin 4052 provided at the bottom of the inside of the oil tank body 401. An oil inlet 4053 is provided at the input end of the oil delivery bin 4052, and the oil inlet 4053 is a funnel structure. The output end of the oil delivery bin 4052 is interconnected with the inside of the first steering mechanism 404. A transmission shaft 4054 extending to the inside of the oil delivery bin 4052 is provided on the outside of the oil tank body 401. The transmission shaft 4054 is connected to the oil tank body 40 1, an impeller 4058 is arranged at one end of the transmission shaft 4054 extending to the inside of the oil tank 4052, and the output end of the oil inlet 4053 corresponds to the impeller 4058. A cam 4055 is arranged at one end of the transmission shaft 4054 located outside the oil tank body 401, and a hinge rod 4056 is arranged on one side of the cam 4055. A piston bin 4051 is arranged at one end of the front side of the oil tank body 401, and a piston cylinder 4059 is arranged inside the piston bin 4051. A piston rod 4057 is arranged at the bottom of the piston cylinder 4059, and the piston rod 4057 is arranged at the bottom of the piston cylinder 4059. The bottom of the plug rod 4057 is hinged to the hinge rod 4056, and a second steering mechanism 40511 is provided on the top of the piston chamber 4051. One end of the second steering mechanism 40511 is provided with a second air pipe 40512 extending to the inside of the air chamber 408, and the other end of the second steering mechanism 40511 is provided with a first air pipe 40510 connected to the outside. The air pressure between the bottom of the air chamber 408 and the top of the piston plate 410 is P1, the air pressure between the bottom of the piston plate 410 and the bottom of the inside of the oil tank body 401 is P2, and the outside atmospheric pressure is P When the electric pump unit 300 electrically extracts or the control module unit 403 manually extracts the hydraulic oil inside the oil tank body 401 to supply oil to the cylinder unit 100, P2>P1>P. When the electric pump unit 300 or the control module unit 403 completes the extraction and opens the exhaust port 407, P2=P>P1. When the exhaust port 407 is closed and the electric pump unit 300 or the control module unit 403 reversely transports the hydraulic oil to the inside of the oil tank body 401, P2 and P1 gradually increase and return to the state of P2>P1>P.

[0042] The use process of the truck cab lifting pump system device proposed in this embodiment is as follows. When the device is in use, the drive motor 303 is started to drive the internal components of the speed reduction mechanism 302 to operate and reduce speed, and the kinetic energy is transmitted to the position of the hand-held integrated pump 301, driving the plunger unit inside the hand-held integrated pump 301 to extract the hydraulic oil in the temporal part of the oil tank body 401. At this time, P2>P1>P, and then under the action of P2, the piston plate 410 has a downward driving force. At the same time, through the extraction power of the hand-held integrated pump 301, the hydraulic oil enters through the oil inlet 4053 at one end of the oil delivery bin 4052, and generates an impact force on the impeller 4058. The oil inlet 4053 is a funnel structure, so that the hydraulic oil entering the oil delivery bin 4052 from the output end of the oil inlet 4053 has a large impact speed, thereby driving the impeller 4058 to rotate, and through the rotation of the impeller 4058, the cam 4055 at one end of the transmission shaft 4054 is driven to rotate;

[0043] The rotation of the cam 4055 further drives the hinge rod 4056 to push and pull the piston rod 4057 up and down, and drives the piston cylinder 4059 to move the internal piston of the piston bin 4051, extracts the external airflow through the first air pipe 40510 and delivers it to the position of the second air pipe 40512, and further delivers it to the inside of the air bin 408, thereby replenishing the air pressure inside the air bin 408, so that P2 is always greater than P1, and then generates a driving force for the hydraulic oil through the piston plate 410, assisting the hand-held electric integrated pump 301 to extract the hydraulic oil and deliver it to the position of the cylinder unit 100 through the oil pipe unit 200, and the cab is lifted and supported by the extension of the cylinder unit 100;

[0044] When the lifting is completed, the air pressure is still P2>P1>P. Before the hydraulic oil is withdrawn, the exhaust port 407 is first opened to connect the internal area of ​​the air chamber 408 with the outside atmosphere. Then, when P2>P, the air pressure P2 inside the air chamber 408 is reduced to a state of P2=P. At this time, the piston plate 410 is affected by the change of the reduced air pressure of P2 and moves upward under the action of the rebound force of the spring 411, thereby forming a state of P2=P>P1, so that the hydraulic oil area of ​​the oil tank body 401 is in a negative pressure state, and then the exhaust port 407 is closed;

[0045] Furthermore, the first steering mechanism 404 is rotated to adjust the delivery direction of the hydraulic oil, so that the hand-electric integrated pump 301 reversely draws the hydraulic oil inside the cylinder unit 100 and delivers it to the inside of the oil tank body 401. At this time, the hydraulic oil does not pass through the oil transfer bin 4052, but directly flows back to the inside of the oil tank body 401 through the connecting passage between the first steering mechanism 404 and the oil tank body 401. At this time, affected by the negative pressure state inside the oil tank body 401, the hydraulic oil has the power of reverse suction during the reflux process, thereby achieving the function of assisting the reflux of the hydraulic oil. As the hydraulic oil continues to reflux, it fills the inside of the oil tank body 401, causing P1 to increase continuously. When the liquid level of the hydraulic oil pushes the piston plate 410 to rise, P2 increases synchronously. When the hydraulic oil is completely refluxed, the pressure state is restored to the state of P2>P1>P, thereby preparing for the next lift.

[0046] Example 2

[0047] like Figure 2 , Figure 3 , Figure 5 , Figure 6As shown, a truck cab lifting pump system device is provided, a pressure regulating mechanism is provided at the top of the inside of the oil tank body 401, a bubble discharge mechanism 409 is provided at the bottom of the pressure regulating mechanism, the pressure regulating mechanism comprises an air chamber 408 which is sealed and connected to the top of the oil tank body 401, an exhaust port 407 is provided at the top of the air chamber 408, a plurality of groups of springs 411 are evenly distributed at the bottom of the air chamber 408, a piston plate 410 is provided at the bottom of the plurality of groups of springs 411, a sealing ring is provided between the outer side of the piston plate 410 and the inner wall of the oil tank body 401, and the outer side of the piston plate 410 is sealed and fitted with the inner wall of the oil tank body 401, the bubble discharge mechanism 409 comprises a mounting connecting rod 4091 which is hinged to the bottom of the piston plate 410, a plurality of groups of mounting shafts 4092 are installed at the bearings at both ends of the mounting connecting rod 4091, and a spoiler 409 is symmetrically provided at one end of the outer side of the mounting shaft 4092 close to the mounting connecting rod 4091 4. Exhaust needles 4095 are evenly distributed on the other end of the outer side of the mounting shaft 4092. Support shafts 4096 are penetrated at both ends of the bottom of the mounting connecting rod 4091. Scrapers 4093 are arranged on the outer side of the support shaft 4096. Torsion springs 4097 are arranged between the scrapers 4093 and the outer sides of the support shaft 4096. The bottom of the scrapers 4093 fits with the bottom of the inside of the oil tank body 401. Drain ports 412 are symmetrically arranged at both ends of the bottom of the oil tank body 401. The side of the scrapers 4093 away from the mounting connecting rod 4091 corresponds to the drain port 412. A drain control unit 402 is arranged at the bottom of the drain port 412. When the mounting connecting rod 4091 moves downward, the bottom of the scrapers 4093 floats upward due to the resistance of the hydraulic oil. When the mounting connecting rod 4091 moves upward, the top of the scrapers 4093 moves downward due to the resistance of the hydraulic oil and fits with the bottom of the inside of the oil tank body 401.

[0048] The use process of the truck cab lifting pump system device proposed in this embodiment is as follows. On the basis of Example 1, as the piston plate 410 moves downward, the mounting connecting rod 4091 is driven to move downward, and at the same time, the bottom of the mounting connecting rod 4091 and the bottom of the inside of the oil tank body 401 slide in contact with each other. As the mounting connecting rod 4091 moves, the scraper 4093 is driven to move in contact with each other, and the bottom of the scraper 4093 is pushed by the resistance of the hydraulic oil, thereby generating a suspended state, and driving the torsion spring 4097 to twist. At this time, the scraper 4093 does not fit the bottom of the oil tank body 401.

[0049] When the connecting rod 4091 is installed and displaced, the spoiler 4094 is driven to follow the displacement, and the spoiler 4094 is rotated by the resistance of the hydraulic oil, thereby driving the exhaust needle 4095 to rotate and puncture and remove the bubbles in the hydraulic oil;

[0050] When the mounting connecting rod 4091 moves upward in the reverse direction, the top surface of the scraper 4093 is displaced downward by the resistance of the hydraulic oil, so that the scraper 4093 and the bottom of the oil tank body 401 are attached to each other, and the oil sludge at the bottom of the oil tank body 401 is scraped and pushed to the position of the sewage discharge port 412, thereby realizing the function of centralized cleaning;

[0051] At the same time, when a negative pressure is formed inside the oil tank body 401, the negative pressure produces a suction effect on the hydraulic oil inside the oil tank body 401, thereby promoting the discharge of bubbles in the hydraulic oil, thereby reducing the amount of bubbles in the hydraulic oil, and further reducing the occurrence of empty suction in the hand-held integrated pump 301, thereby improving the stability of the extension and retraction of the cylinder unit 100.

[0052] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A truck cab lifting pump system device, characterized in that: It comprises an oil cylinder unit (100), an oil delivery pipe unit (200), an electric pump unit (300) and an oil tank unit (400), wherein the oil delivery pipe unit (200) connects the oil paths among the oil cylinder unit (100), the electric pump unit (300) and the oil tank unit (400); The electric pump unit (300) comprises a driving motor (303), the output end of the driving motor (303) is provided with a speed reducing mechanism (302), the output end of the speed reducing mechanism (302) is provided with a hand-operated integrated pump (301), and the input end and the output end of the hand-operated integrated pump (301) are respectively connected to the oil delivery pipe unit (200); The oil tank unit (400) comprises an oil tank body (401) and a control module unit (403); the interior of the oil tank body (401) is filled with hydraulic oil; a first steering mechanism (404) is provided at the bottom of the interior of the control module unit (403); an input end and an output end at the bottom of the first steering mechanism (404) are respectively connected to the oil pipe unit (200); A pressure regulating mechanism is arranged at the top of the oil tank body (401), a bubble discharge mechanism (409) is arranged at the bottom of the pressure regulating mechanism, and a piston mechanism (405) which is interconnected with the inside of the oil tank body (401) is arranged on the outside of the oil tank body (401).

2. A truck cab lifting pump system device according to claim 1, characterized in that: The top of the control module unit (403) is provided with an oil inlet port (406) which is interconnected with the inside of the oil tank body (401); the inside of the control module unit (403) is provided with a manual pump suction unit; the inside of the control module unit (403) is provided with a transition oil chamber which is compatible with the first steering mechanism (404); and the transition oil chamber is interconnected with the bottom of the inside of the oil tank body (401).

3. A truck cab lifting pump system device according to claim 1, characterized in that: The pressure regulating mechanism comprises an air chamber (408) which is arranged at the top of the oil tank body (401) and is sealed and connected thereto. An exhaust port (407) is arranged at the top of the air chamber (408). A plurality of groups of springs (411) are evenly distributed at the bottom of the air chamber (408). A piston plate (410) is commonly arranged at the bottom of the plurality of groups of springs (411). A sealing ring is arranged between the outer side of the piston plate (410) and the inner wall of the oil tank body (401). The outer side of the piston plate (410) is sealed and fitted with the inner wall of the oil tank body (401). Two groups of bubble discharge mechanisms (409) are symmetrically arranged at the bottom of the piston plate (410).

4. A truck cab lifting pump system device according to claim 3, characterized in that: The bubble discharge mechanism (409) comprises a mounting connecting rod (4091) hingedly connected to the bottom of the piston plate (410), a plurality of mounting shafts (4092) are mounted on bearings at both ends of the mounting connecting rod (4091), spoilers (4094) are symmetrically arranged at one end of the outer side of the mounting shaft (4092) close to the mounting connecting rod (4091), exhaust needles (4095) are evenly distributed at the other end of the outer side of the mounting shaft (4092), support shafts (4096) are penetrated at both ends of the bottom of the mounting connecting rod (4091), a scraper (4093) is arranged on the outer side of the support shaft (4096), and a torsion spring (4097) is arranged between the scraper (4093) and the outer side of the support shaft (4096).

5. A truck cab lifting pump system device according to claim 4, characterized in that: The bottom of the scraper (4093) fits into the bottom of the oil tank body (401), and sewage discharge ports (412) are symmetrically arranged at both ends of the bottom of the oil tank body (401). The side of the scraper (4093) away from the mounting connecting rod (4091) corresponds to the sewage discharge port (412), and a sewage discharge control unit (402) is arranged at the bottom of the sewage discharge port (412).

6. A truck cab lifting pump system device according to claim 5, characterized in that: When the mounting connecting rod (4091) moves downward, the bottom of the scraper (4093) floats upward due to the resistance of the hydraulic oil. When the mounting connecting rod (4091) moves upward, the top of the scraper (4093) moves downward due to the resistance of the hydraulic oil and fits with the bottom of the tank body (401).

7. A truck cab lifting pump system device according to claim 1, characterized in that: The piston mechanism (405) comprises an oil delivery bin (4052) arranged at the bottom of the oil tank body (401); an oil inlet (4053) is arranged at the input end of the oil delivery bin (4052), and the oil inlet (4053) is a funnel structure; an output end of the oil delivery bin (4052) is communicated with the interior of the first steering mechanism (404); a transmission shaft (4054) extending into the interior of the oil delivery bin (4052) is arranged on the outer side of the oil tank body (401); a mechanical sealing structure is arranged between the transmission shaft (4054) and the oil tank body (401); an impeller (4058) is arranged at one end of the transmission shaft (4054) extending into the interior of the oil delivery bin (4052); and the output end of the oil inlet (4053) corresponds to the impeller (4058).

8. A truck cab lifting pump system device according to claim 7, characterized in that: A cam (4055) is provided at one end of the transmission shaft (4054) located outside the oil tank body (401), and a hinge rod (4056) is provided on one side of the cam (4055). A piston chamber (4051) is provided at one end of the front side of the oil tank body (401), and a piston cylinder (4059) is provided inside the piston chamber (4051). A piston rod (4057) is provided at the bottom of the piston cylinder (4059), and the bottom of the piston rod (4057) is hinged to the hinge rod (4056).

9. A truck cab lifting pump system device according to claim 8, characterized in that: A second steering mechanism (40511) is disposed on the top of the piston chamber (4051), one end of the second steering mechanism (40511) is disposed with a second air pipe (40512) extending into the interior of the air chamber (408), and the other end of the second steering mechanism (40511) is disposed with a first air pipe (40510) connected to the outside.

10. A truck cab lifting pump system device according to claim 3, characterized in that: The air pressure between the bottom of the gas chamber (408) and the top of the piston plate (410) is P1, the air pressure between the bottom of the piston plate (410) and the bottom of the inside of the oil tank body (401) is P2, and the outside atmospheric pressure is P. When the electric pump unit (300) electrically extracts or the control module unit (403) manually extracts the hydraulic oil inside the oil tank body (401) to supply oil to the cylinder unit (100), P2>P1>P. When the electric pump unit (300) or the control module unit (403) completes the extraction and opens the exhaust port (407), P2=P>P1. When the exhaust port (407) is closed and the electric pump unit (300) or the control module unit (403) reversely delivers the hydraulic oil to the inside of the oil tank body (401), P2 and P1 gradually increase and return to the state of P2>P1>P.

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