Integrated heavy truck intelligent control and interlock lifting system

Abstract

The present application relates to the technical field of lifting system, and discloses an integrated heavy truck intelligent control and interlocking lifting system, which comprises a lifting cylinder (1), an oil pump assembly (2), an oil tank (3) and a motor (4), the oil pump assembly (2) comprises an interlocking valve (21) and a bidirectional oil pump (22) connected with the motor (4), the bidirectional oil pump (22) is communicated with the oil tank (3) and controls the pressure building of the oil tank (3), and the integrated heavy truck intelligent control and interlocking lifting system further comprises a wire harness assembly (5) and a controller (6), the controller (6) is connected with the motor (4) through the wire harness assembly (5) and controls the forward and reverse rotation of the motor (4). The integrated heavy truck intelligent control and interlocking lifting system meets the comprehensive development requirements of high quality, integration, light weight and intelligence of the new generation of commercial heavy trucks, and has a great application and promotion market.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lifting system, and in particular to an integrated heavy truck intelligent control and interlocking lifting system. BACKGROUND

[0002] With the increasing pace of rapid logistics and digital logistics, the main carrier hardware of logistics, commercial heavy trucks, has also been paid more attention. The commercial heavy truck customers not only have high requirements for the reliability and safety of the lifting system, but also put forward higher requirements for the convenience and efficiency of the operation. Especially, the new energy commercial heavy truck is rapidly rising, which requires the development of the commercial heavy truck cab lifting system in the direction of high quality, lightweight and intelligent.

[0003] The main structure of the cab hydraulic lifting system currently used in the industry is that the motor is installed on the oil pump, and the oil tank and the lifting cylinder are completely independent and separate. The installation support of the whole vehicle needs to be matched and assembled. The oil pump and the oil tank are connected through the oil suction pipe and the oil pressure pipe. The oil tank is connected with the lifting cylinder through the A oil pipe and the B oil pipe. The motor is one-way running, so a manual reversing mechanism must be set in the oil circuit to realize the switching of the oil circuit in different working conditions. When the lifting cylinder runs to the limit position, personnel need to determine whether to power off by sensory judgment. The above-mentioned existing system has the problems of complex structure, high cost, heavy weight, high installation space requirement, many potential failure points caused by connection point transition, and manual reversing, which cannot meet the development needs of high quality, lightweight and intelligent of commercial vehicles. Therefore, how to develop an integrated, lightweight and convenient intelligent control lifting system has become an objective development demand and necessity.

[0004] At present, the patent number CN201410187600.3 still has the problems of complex structure and inability to intelligently control lifting. SUMMARY

[0005] The present application provides an integrated heavy truck intelligent control and interlocking lifting system to solve the problems in the prior art.

[0006] In order to solve the above technical problems, the present application solves the problems by the following technical scheme:

[0007] The integrated heavy truck intelligent control and interlocking lifting system comprises a lifting oil cylinder, an oil pump assembly, an oil tank and a motor, the oil tank, the oil pump assembly and the motor are sequentially connected by axial series connection, the motor is a bidirectional rotating motor, the oil pump assembly comprises an interlocking valve and a bidirectional oil pump connected with the motor, the bidirectional oil pump is communicated with the oil tank and controls the pressure building of the oil tank, the lifting system further comprises a first oil way, the first oil way is sequentially connected with the oil tank, a left pump port of the bidirectional oil pump and the interlocking valve, a second oil way, the second oil way is sequentially connected with the oil tank, a right pump port of the bidirectional oil pump and the interlocking valve, and the interlocking valve is connected with upper and lower cavities of the lifting oil cylinder, the lifting system further comprises a wire harness assembly and a controller, the controller is connected with the motor through the wire harness assembly and controls the forward and reverse rotation of the motor, the motor is a bidirectional rotating motor, and a motor plug is designed, which is plugged into a wire harness socket designed at one end of the wire harness assembly, so that the wire harness can be quickly replaced to realize the universality of different vehicle body parts, and the other end of the wire harness assembly is connected with a vehicle controller to realize the supply of power and the input and feedback of signals.

[0008] As preferred, the lifting oil cylinder comprises a cylinder, a piston rod and a mounting support, the lower end of the cylinder is designed with a lower mounting hole and is fixedly connected with a vehicle beam through a screw, the upper end of the piston rod is designed with an upper mounting hole and is fixedly connected with a bottom longitudinal beam of a cab through a screw, the mounting support is welded on the outer surface of the cylinder, and the mounting support is provided with a threaded mounting hole and is fixedly connected with the oil pump assembly through a screw matched with the threaded mounting hole.

[0009] As preferred, the interlocking valve comprises a first one-way valve and a second one-way valve, the first one-way valve is connected with the first oil way and the upper cavity of the lifting oil cylinder and controls the delivery of oil to the upper cavity of the lifting oil cylinder, the second one-way valve is connected with the second oil way and the lower cavity of the lifting oil cylinder and controls the delivery of oil to the lower cavity of the lifting oil cylinder, and the interlocking valve further comprises an interlocking control oil way in the interlocking valve, the interlocking control oil way has two branches and is respectively communicated with the spool of the second one-way valve and the first oil way and the spool of the first one-way valve and the second oil way.

[0010] As preferred, the oil pump assembly further comprises a first hydraulic control one-way valve and a second hydraulic control one-way valve, the first hydraulic control one-way valve is installed on the first oil way, the second hydraulic control one-way valve is installed on the second oil way, and a control oil way is connected between the first hydraulic control one-way valve and the second hydraulic control one-way valve.

[0011] As preferred, the oil pump assembly further comprises a first digital display pressure gauge and a second digital display pressure gauge, the first digital display pressure gauge is installed on the first oil way between the bidirectional oil pump and the upper cavity of the lifting oil cylinder, the second digital display pressure gauge is installed on the second oil way between the bidirectional oil pump and the lower cavity of the lifting oil cylinder, and the first digital display pressure gauge and the second digital display pressure gauge are designed with a feedback type pressure sensor, and the feedback signal can be preset according to the requirement.

[0012] As preferred, a first overflow valve is installed on the first oil path and connected with the oil tank, and a second overflow valve is installed on the second oil path and connected with the oil tank.

[0013] As preferred, a breather is installed on the oil filler of the oil tank.

[0014] As preferred, the oil filler is upwardly arranged, and the breather comprises a shell and a gas-permeable baffle installed on the shell, both upper and lower ends of the shell are open, the lower opening of the shell is communicated with the oil tank, the gas-permeable baffle is installed at the upper opening of the shell, and the middle part of the gas-permeable baffle is concave downward and provided with a gas-permeable hole.

[0015] As preferred, an installation groove is arranged on the inner wall of the upper opening of the shell, the lower edge of the gas-permeable baffle is matched with the installation groove, and a warning whistle is fixed on the upper opening of the shell and located above the gas-permeable hole.

[0016] As preferred, the shell is a spherical shell, a baffle is installed in the shell and divides the shell into at least two chambers through the baffle; the baffle forms an angle of 30°-60° with the horizontal plane, the upper end of the baffle is fixed on the inner wall of the shell, and the spacing between the lower end of the baffle and the inner wall of the shell is 10%-35% of the radius of the shell.

[0017] The present application has the following technical effects: integration and light weight; simple structure, convenient installation, and abandonment of excessive and complicated connection and installation; simple structure, great reduction of potential faults, low cost, and easy wide application; self-reversing design, self-providing and returning of oil in the oil path during lifting and return; self-sensing feedback, automatic feedback of power-off stoppage after the oil cylinder is in place, and monitoring of the system pressure of the oil path during operation; interlocking design, ensuring safe and reliable locking at each stroke position. In summary, the integrated heavy truck intelligent control and interlocking lifting system meets the comprehensive development requirements of new generation commercial heavy trucks in high quality, integration, light weight, and intelligence, and has great application and promotion market. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the present application.

[0019] Figure 2 is a hydraulic principle diagram of the present application.

[0020] Figure 3 is an installation diagram of the present application.

[0021] Figure 4 is a structural schematic diagram of the breather of the present application.

[0022] The names of the parts referred to by the numbers in the drawings are as follows: 01 - cab, 02 - whole vehicle girder, 1 - lifting cylinder, 2 - oil pump assembly, 3 - oil tank, 4 - motor, 5 - wire harness assembly, 6 - controller, 7 - first oil way, 8 - second oil way, 11 - cylinder barrel, 111 - lower mounting hole, 12 - piston rod, 121 - upper mounting hole, 13 - mounting support, 21 - interlocking valve, 211 - first one-way valve, 212 - second one-way valve, 213 - interlocking control oil way, 22 - bidirectional oil pump, 23 - first hydraulic control one-way valve, 24 - second hydraulic control one-way valve, 25 - first digital pressure gauge, 26 - second digital pressure gauge, 27 - first overflow valve, 28 - second overflow valve, 30 - oil filler, 31 - breather, 310 - cavity, 311 - shell, 3111 - mounting groove, 312 - air permeable baffle, 3121 - air permeable hole, 313 - alarm whistle, 314 - baffle, 41 - motor plug, 51 - wire harness socket. DETAILED DESCRIPTION

[0023] The application will be further described in detail below in combination with the drawings and examples.

[0024] Example 1

[0025] The integrated heavy truck intelligent control and interlocking lifting system, as shown in the figure, comprises a lifting cylinder 1, an oil pump assembly 2, an oil tank 3 and a motor 4, the oil tank 3, the oil pump assembly 2 and the motor 4 are connected in series by shaft in order, the motor 4 is a bidirectional rotating motor, the oil pump assembly 2 comprises an interlocking valve 21 and a bidirectional oil pump 22 connected with the motor 4, the bidirectional oil pump 22 is communicated with the oil tank 3 and controls the pressure building of the oil tank 3, further comprising a first oil way 7, the first oil way 7 is connected with the oil tank 3, the left pump port of the bidirectional oil pump 22 and the interlocking valve 21 in order, further comprising a second oil way 8, the second oil way 8 is connected with the oil tank 3, the right pump port of the bidirectional oil pump 22 and the interlocking valve 21 in order, the interlocking valve 21 is connected with the upper cavity and the lower cavity of the lifting cylinder 1; further comprising a wire harness assembly 5 and a controller 6, the controller 6 is connected with the motor 4 through the wire harness assembly 5 and controls the forward and reverse rotation of the motor 4, the motor 4 adopts a bidirectional rotating motor, and a motor plug 41 is designed at the same time, which is plugged into a wire harness socket 51 designed at one end of the wire harness assembly 5, so that the wire harness can be quickly replaced to realize the universality of different vehicle body parts, and the other end of the wire harness assembly 5 is connected with the whole vehicle controller 6 to realize the supply of power and the input and feedback of signals.

[0026] The interlocking valve 21 comprises a first one-way valve 211 and a second one-way valve 212, the first one-way valve 211 is connected with the first oil path 7 and the upper cavity of the lifting oil cylinder 1 and controls the oil delivery to the upper cavity of the lifting oil cylinder 1, the second one-way valve 212 is connected with the second oil path 8 and the lower cavity of the lifting oil cylinder 1 and controls the oil delivery to the lower cavity of the lifting oil cylinder 1, and the interlocking valve 21 further comprises an interlocking control oil path 213, the interlocking control oil path 213 has two and respectively communicates the spool of the second one-way valve 212 and the first oil path 7, the spool of the first one-way valve 211 and the second oil path 8.

[0027] The oil pump assembly 2 further comprises a first hydraulic control one-way valve 23 and a second hydraulic control one-way valve 24, the first hydraulic control one-way valve 23 is installed on the first oil path 7, the second hydraulic control one-way valve 24 is installed on the second oil path 8, and the first hydraulic control one-way valve 23 and the second hydraulic control one-way valve 24 are connected with a control oil path.

[0028] The oil pump assembly 2 further comprises a first digital display pressure gauge 25 and a second digital display pressure gauge 26, the first digital display pressure gauge 25 is installed on the first oil path 7 between the bidirectional oil pump 22 and the upper cavity of the lifting oil cylinder 1, the second digital display pressure gauge 26 is installed on the second oil path 8 between the bidirectional oil pump 22 and the lower cavity of the lifting oil cylinder 1, and the first digital display pressure gauge 25 and the second digital display pressure gauge 26 are designed with a feedback type pressure sensor, and the feedback signal can be preset according to the requirement.

[0029] The first overflow valve 27 is installed on the first oil path 5 and connected with the oil tank 3, and the second overflow valve 28 is installed on the second oil path 8 and connected with the oil tank 3.

[0030] The specific work is as follows:

[0031] When the cab 01 needs to be lifted, the motor 4 is rotated in the positive direction, the bidirectional oil pump 22 in the oil pump assembly 2 sucks oil on the left side, the first hydraulic control one-way valve 23 is opened, the oil in the oil tank 3 is sucked to build pressure, the first one-way valve 211 is opened, the high-pressure oil enters the lower cavity of the lifting oil cylinder 1 from the first oil path 7, and drives the piston rod assembly 12 to act outward; at the same time, the high-pressure oil before entering the first one-way valve 211 acts on the hydraulic control spool to open the second one-way valve 212 and the second hydraulic control one-way valve 24, then the hydraulic oil in the upper cavity of the lifting oil cylinder 1 passes through the second one-way valve 212, the second oil path 8 and the second hydraulic control one-way valve 24 and returns to the oil tank 3; the oil path pressure of the oil outlet and the oil return in the whole process is monitored and fed back in real time through the first digital display pressure gauge 25 and the second digital display pressure gauge 26; when the lifting oil cylinder 1 is lifted to the limit position, the lower cavity pressure rises rapidly to the preset value, the sensor in the first digital display pressure gauge 25 receives the signal and feeds back to the control end 6, and the control end 6 sends an instruction after receiving the corresponding signal, the motor 4 is powered off, and the oil pump stops working and no longer supplies oil.

[0032] When the cab 01 needs to be lifted, the motor 4 is started, the oil pump assembly 2 is started to build pressure, the first one-way valve 211 is opened, the high-pressure oil enters the second oil way 8, and the piston rod assembly 12 is pushed outwards; at the same time, the high-pressure oil entering the second one-way valve 212 acts on the spool of the hydraulic control valve to open the first one-way valve 211 and the first hydraulic control one-way valve 23, and the hydraulic oil in the lower cavity of the lifting oil cylinder 1 returns to the oil tank 3 through the first one-way valve 211, the first oil way 7 and the first hydraulic control one-way valve 23; similarly, the oil outlet pressure and the oil return pressure in the whole process are monitored and fed back in real time through the first digital pressure gauge 25 and the second digital pressure gauge 26; when the lifting oil cylinder 1 is lifted to the extreme position, the pressure in the upper cavity is quickly increased to the preset value, the sensor in the second digital pressure gauge 26 is connected to the signal, and the feedback is sent to the control end 6; after the control end 6 receives the corresponding signal, the motor 4 is powered off, and the oil pump stops working and no longer supplies oil.

[0033] When it is needed to stop at any position, the motor 4 does not work, and the oil pump assembly 2 does not build pressure; at this time, under the action of the interlocking valve 21, whether the piston rod assembly 12 of the lifting oil cylinder 1 is subjected to tension or thrust, or is subjected to various impacts, the first one-way valve 211 and the second one-way valve 212 in the interlocking valve 21 can be tightly sealed and cannot be opened by external impact force, thereby ensuring the safety and reliability of the system.

[0034] Embodiment 2

[0035] The same as embodiment 1, except that the lifting oil cylinder 1 comprises a cylinder barrel 11, a piston rod 12 and a mounting support 13, the lower end of the cylinder barrel 11 is designed with a lower mounting hole 111 and is fixedly connected to the vehicle beam 02 through screws, the upper end of the piston rod 12 is designed with an upper mounting hole 121 and is fixedly connected to the bottom longitudinal beam of the cab 01 through screws, the mounting support 13 is welded to the outer surface of the cylinder barrel 11, and the mounting support 13 is provided with threaded mounting holes and is fixedly connected to the oil pump assembly 2 through screws matched with the threaded mounting holes.

[0036] Embodiment 3

[0037] The same as embodiment 1, except that the oil filler hole 30 of the oil tank 3 is provided with a breather 31.

[0038] The oil filler hole 30 is upwardly arranged, and the breather 31 comprises a shell 311 and a gas-permeable baffle 312 mounted on the shell 311; the shell 311 is open at both upper and lower ends, the lower opening of the shell 311 is communicated with the oil tank 3, the gas-permeable baffle 312 is mounted at the upper opening of the shell 311, the middle part of the gas-permeable baffle 312 is concave downward and is provided with a gas-permeable hole 3121, and the gas-permeable hole 3121 is a capillary cross hole for allowing oil to flow out and water to flow in.

[0039] The upper opening inner wall of the shell 311 is provided with a mounting groove 3111, the lower edge of the air venting baffle 312 is matched with the mounting groove 3111, and the alarm whistle 313 fixed on the upper opening of the shell 311 is further included, and the alarm whistle 313 is located above the air venting hole 3121. When the air pressure in the oil tank 3 suddenly rises, the air venting hole 3121 rapidly discharges air upward and blows the alarm whistle 313, thereby reminding the user to pay attention to the pressure of the oil tank 3.

[0040] The shell 311 is a spherical shell, the baffle 314 is installed in the shell 311, and the shell 311 is divided into at least two chambers 310 by the baffle 314; the baffle 314 is at an angle of 45° with the horizontal plane, the upper end of the baffle 314 is fixed on the inner wall of the shell 311, and the spacing between the lower end of the baffle 314 and the inner wall of the shell 311 is 10% to 35% of the radius of the shell 311. Through the design of the baffle 314, the oil liquid can be effectively prevented from being discharged with the gas during the breathing process, and the oil liquid is in contact with the baffle 314 and the inner wall of the shell 311, thereby making the oil liquid sink back in the collision process.

[0041] In summary, the above only describes the preferred embodiments of the present application, and any equivalent changes and modifications made according to the scope of the patent application of the present application shall be included in the scope of the present application.

Claims

1. Integrated heavy truck intelligent control and interlock lifting system, characterized in that: The utility model provides a kind of lifting oil cylinder (1), oil pump assembly (2), oil tank (3) and motor (4), oil tank (3), oil pump assembly (2) and motor (4) are sequentially installed by axial series connection, motor (4) is bidirectional rotating motor, oil pump assembly (2) includes interlock valve (21) and the bidirectional oil pump (22) connected with motor (4), bidirectional oil pump (22) is communicated with oil tank (3) and controls the pressure building of oil tank (3), further include first oil path (7), first oil path (7) is sequentially connected oil tank (3), bidirectional oil pump (22) left pump port and interlock valve (21), further include second oil path (8), second oil path (8) is sequentially connected oil tank (3), bidirectional oil pump (22) right pump port and interlock valve (21), interlock valve (21) is connected with the upper cavity and lower cavity of lifting oil cylinder (1) respectively;Further include wire harness assembly (5) and controller (6), controller (6) is connected with motor (4) by wire harness assembly (5) and controls the positive and negative rotation work of motor (4);Oil tank (3) is installed with breather (31) in oil filler (30), oil filler (30) is set upwards, breather (31) includes shell (311) and gas-permeable baffle (312) installed on shell (311), both ends of shell (311) are open, the lower opening of shell (311) is communicated with oil tank (3), gas-permeable baffle (312) is installed at the upper opening of shell (311), the middle part of gas-permeable baffle (312) is concave downwards and is provided with gas-permeable hole (3121);Shell (311) is spherical shell, baffle (314) is installed in shell (311) and divides the inside of shell (311) into at least two chambers (310) by baffle (314);Baffle (314) is 30 °~60 ° with horizontal plane Angle, the upper end of baffle (314) is fixed in the inner wall of shell (311), and the spacing between the lower end of baffle (314) and the inner wall of shell (311) is 10%~35% of the radius of shell (311).

2. The integrated heavy duty truck smart control and interlock lift system of claim 1, wherein: Lifting oil cylinder (1) includes cylinder barrel (11), piston rod (12) and mounting support (13), lower end of cylinder barrel (11) is designed with lower mounting hole (111), upper end of piston rod (12) is designed with upper mounting hole (121), mounting support (13) is welded on the outer surface of cylinder barrel (11), mounting support (13) is equipped with threaded mounting hole and is fixed with oil pump assembly (2) by screw matched with threaded mounting hole.

3. The integrated heavy duty truck smart control and interlock lift system of claim 1, wherein: The interlocking valve (21) comprises a first one-way valve (211) and a second one-way valve (212), the first one-way valve (211) is connected with the first oil path (7) and the upper cavity of the lifting oil cylinder (1) and controls the oil delivery to the upper cavity of the lifting oil cylinder (1), the second one-way valve (212) is connected with the second oil path (8) and the lower cavity of the lifting oil cylinder (1) and controls the oil delivery to the lower cavity of the lifting oil cylinder (1), and the interlocking control oil path (213) in the interlocking valve (21) is further arranged, the interlocking control oil path (213) has two and is respectively communicated with the spool of the second one-way valve (212) and the first oil path (7) and the spool of the first one-way valve (211) and the second oil path (8).

4. The integrated heavy truck smart control and interlock lift system of claim 1, wherein: The oil pump assembly (2) further comprises a first hydraulic control one-way valve (23) and a second hydraulic control one-way valve (24), the first hydraulic control one-way valve (23) is installed on the first oil path (7), the second hydraulic control one-way valve (24) is installed on the second oil path (8), and the control oil path is connected between the first hydraulic control one-way valve (23) and the second hydraulic control one-way valve (24).

5. The integrated heavy truck smart control and interlock lift system of claim 1, wherein: The oil pump assembly (2) further comprises a first digital display pressure gauge (25) and a second digital display pressure gauge (26), the first digital display pressure gauge (25) is installed on the first oil path (7), and the second digital display pressure gauge (26) is installed on the second oil path (8).

6. The integrated heavy truck smart control and interlock lift system of claim 1, wherein: The first overflow valve (27) is installed on the first oil path (7) and connected with the oil tank (3), and the second overflow valve (28) is installed on the second oil path (8) and connected with the oil tank (3).

7. The integrated heavy truck smart control and interlock lift system of claim 1, wherein: The upper opening inner wall of the shell (311) is provided with a mounting groove (3111), the lower edge of the air vent baffle (312) is matched with the mounting groove (3111), and the alarm whistle (313) fixed on the upper opening of the shell (311) is further arranged, and the alarm whistle (313) is located above the air vent hole (3121).

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