A dual-function hydraulic spare tire rack control system

Abstract

The present invention relates to a dual-function hydraulic spare tire rack control system, which belongs to the field of automotive engineering technology. The control system includes a hydraulic oil tank, a flashlight integrated dual-function pump, an electronically controlled slide valve, a reversing oil cylinder module, a function selection module, a safety module and a tire-lifting contact switch. The present invention realizes the flipping of the cab or the lifting and lowering of the spare tire through the electronically controlled slide valve and the interlocked hydraulic spare tire rack lifting relay and the cab flipping relay. In addition, the present application can also realize the switching between manual control and electric control through the electronically controlled slide valve, and hydraulic power assistance can also be used during manual control, so that the flipping of the cab or the lifting and lowering of the spare tire can be realized without the operator having to expend effort, and the safety is relatively high.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile engineering, and in particular relates to a dual-function hydraulic spare tire rack control system. Background Art

[0002] With the transformation and upgrading of traditional industries, the use of some large vehicles is increasing. These large vehicles have a large gross mass, resulting in larger tire diameters and masses. However, these large vehicles are limited by specialized equipment, resulting in a relatively compact structure, which in turn limits the location for the spare tire to be installed below the frame. Furthermore, the tires of large specialty vehicles are large in overall dimensions, and installing them below the frame can affect the vehicle's structure and proper operation. Therefore, these large vehicles require the spare tire to be lifted to and installed in the limited space above the frame. However, due to the large mass of the spare tire, moving it to a higher position is both impractical and dangerous.

[0003] The existing heavy-duty vehicle spare tire rack lifter (application number CN02228481.8) is composed of a worm connected to the crank handle, a worm shaft, a compression washer between the worm shaft boss and the pressure plate, a worm wheel, and a wire reel assembly; the worm wheel adopts a multi-head worm, and the pressure plate is connected to the housing of the lifter by bolts. The pressure plate is inlaid with a sliding bearing, and the bolt is equipped with a spring washer. The pressure plate drives the sliding bearing to push the compression washer and the worm shaft boss to be compressed. It can be seen that the heavy-duty vehicle spare tire rack lifter is a worm gear mechanical structure to realize the lifting of the heavy-duty vehicle spare tire. The lifting device of the pure mechanical structure must have a certain opening and closing degree restriction, and the lifting still requires manual operation. This is the shortcoming of the existing technology.

[0004] In view of this, the present invention provides a dual-function hydraulic spare tire rack control system to solve the above-mentioned defects in the prior art, which is very necessary. Summary of the Invention

[0005] The purpose of the present invention is to provide a dual-function hydraulic spare tire rack control system to solve the problems existing in the prior art, in view of the defect that there is a lack of an electric lifting device for a heavy spare tire.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A dual-function hydraulic spare tire rack control system includes a hydraulic oil tank, a flashlight dual-function pump, an electronically controlled slide valve, a reversing cylinder module, a function selection module, a safety module, and a tire lift-in-place contact switch;

[0008] The hydraulic oil tank is connected to the first end of the electronically controlled slide valve through the handheld and light integrated dual-function pump, the second end of the electronically controlled slide valve is connected to the reversing cylinder module, the third end of the electronically controlled slide valve is connected to the first end of the function selection module, the second end of the function selection module is connected to the first end of the insurance module, the third end of the function selection module is connected to the positive pole of the handheld and light integrated dual-function pump through the tire lift-in-place contact switch, the fourth end of the function selection module is connected to the positive pole of the handheld and light integrated dual-function pump, and the second end of the insurance module is connected to the DC power supply.

[0009] In one embodiment, the reversing cylinder includes a cab flip reversing valve, a cab flip cylinder, a hydraulic spare tire rack lifting cylinder and a hydraulic spare tire rack lifting reversing valve. The cab flip cylinder is connected to the electronically controlled slide valve through the cab flip reversing valve, and the hydraulic spare tire rack lifting cylinder is connected to the electronically controlled slide valve through the hydraulic spare tire rack lifting reversing valve.

[0010] In one embodiment, the function selection module includes a cab tilt relay, a hydraulic spare tire rack lifting relay, a hydraulic spare tire rack lifting electric switch, a cab tilt electric switch, a cab tilt locking relay, and a hydraulic spare tire rack lifting locking relay;

[0011] A first end of the normally open switch of the cab flip relay is connected to a first interface of the third end of the electronically controlled slide valve, and a second end of the normally open switch of the cab flip relay is connected to the insurance module via a normally closed switch of the hydraulic spare tire rack lifting relay;

[0012] A first end of the normally open switch of the hydraulic spare tire rack lifting relay is connected to the insurance module, and a second end of the normally open switch of the hydraulic spare tire rack lifting relay is connected to a second interface of the third end of the electric control slide valve through a normally closed switch of the cab flip relay;

[0013] A first end of a cab flip relay coil is connected to a fuse module via a cab flip electric switch, a first end of the cab flip relay coil is further connected to a first end of a hydraulic spare tire rack lifting and locking relay coil, and a second end of the cab flip relay coil is grounded;

[0014] A first end of a coil of a hydraulic spare tire rack lifting relay is connected to a fuse module via a hydraulic spare tire rack lifting electric switch. The first end of the coil of the hydraulic spare tire rack lifting relay is also connected to a first end of a coil of a cab tilt lock relay. A second end of the coil of the hydraulic spare tire rack lifting relay is grounded.

[0015] The second end of the coil of the hydraulic spare tire rack lifting lock relay and the second end of the coil of the cab tilting lock relay are both grounded;

[0016] A first end of the normally open switch of the cab rollover lock relay is connected to the insurance module, and a second end of the normally open switch of the cab rollover lock relay is connected to the positive electrode of the flashlight dual-function pump;

[0017] The first end of the normally open switch of the hydraulic spare tire rack lifting and locking relay is connected to the insurance module, and the second end of the normally open switch of the hydraulic spare tire rack lifting and locking relay is connected to the positive pole of the flashlight integrated dual-function pump through the tire lifted into place contact switch.

[0018] In one embodiment, an oil suction filter is further included, which is installed in the hydraulic oil tank, and the flashlight dual-function pump is connected to the oil suction filter through an oil pipeline.

[0019] In one embodiment, a hydraulic oil tank breathing valve is further included, and the hydraulic oil tank breathing valve is installed on the hydraulic oil tank.

[0020] In one embodiment, the hydraulic oil tank further includes an oil return pipe, which is arranged between the electronically controlled sliding valve and the hydraulic oil tank.

[0021] In one embodiment, a one-way valve is further included, and the one-way valve is arranged on the oil return pipeline.

[0022] In one embodiment, the system further includes a flow control valve, which is disposed on the oil return pipeline between the one-way valve and the electronically controlled sliding valve.

[0023] In one embodiment, the DC power supply is a 24V DC power supply.

[0024] In one embodiment, the tire-lifted-in-place contact switch is installed on a fixing frame that fixes the hydraulic spare tire rack. The tire-lifted-in-place contact switch can prevent overload after the spare tire is lifted into place, thereby protecting the normal operation of the hydraulic system.

[0025] The beneficial effect of the present invention is that the present invention realizes the flipping of the cab or the lifting of the spare tire through the electronically controlled sliding valve and the interlocked hydraulic spare tire rack lifting relay and the cab flipping relay; in addition, the present application can also realize the switching between manual control and electric control through the electronically controlled sliding valve, and hydraulic power assistance can also be used during manual control, so that the flipping of the cab or the lifting of the spare tire can be achieved without the operator having to expend effort, and with higher safety.

[0026] In addition, the present invention has a reliable design principle, a simple structure and a very broad application prospect.

[0027] It can be seen that compared with the prior art, the present invention has outstanding substantial features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1This is a schematic diagram of the dual-function hydraulic spare tire rack control system.

[0029] 1 is the hydraulic oil tank, 2 is the handlight integrated dual-function pump, 3 is the electronically controlled slide valve, 41 is the cab flip directional valve, 42 is the cab flip cylinder, 43 is the hydraulic spare tire rack lifting cylinder, 44 is the hydraulic spare tire rack lifting directional valve, 51 is the cab flip relay, 52 is the hydraulic spare tire rack lifting relay, 53 is the hydraulic spare tire rack lifting electric switch, 54 is the cab flip electric switch, 55 is the cab flip locking relay, 56 is the hydraulic spare tire rack lifting locking relay, 6 is the insurance module, 7 is the tire lifted into place contact switch, 8 is the 24V DC power supply, 91 is the oil suction filter element, 92 is the hydraulic oil tank breathing valve, 93 is the one-way valve, and 94 is the flow control valve. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are intended to explain the present invention, but the present invention is not limited to the following implementation modes.

[0031] like Figure 1 As shown, the present invention provides a dual-function hydraulic spare tire rack control system, including a hydraulic oil tank, a flashlight integrated dual-function pump, an electronically controlled slide valve, a reversing oil cylinder module, a function selection module, a fuse module and a tire-lifted contact switch; the hydraulic oil tank is connected to the first end of the electronically controlled slide valve through the flashlight integrated dual-function pump, the second end of the electronically controlled slide valve is connected to the reversing oil cylinder module, the third end of the electronically controlled slide valve is connected to the first end of the function selection module, the second end of the function selection module is connected to the first end of the fuse module, the third end of the function selection module is connected to the positive electrode of the flashlight integrated dual-function pump through the tire-lifted contact switch, the fourth end of the function selection module is connected to the positive electrode of the flashlight integrated dual-function pump, and the second end of the fuse module is connected to a DC power supply, which is a 24V DC power supply.

[0032] Among them, the tire lifted into place contact switch is installed on the fixing frame of the fixed hydraulic spare tire rack. The tire lifted into place contact switch ensures that the working power of the flashlight integrated dual-function pump is disconnected after the spare tire is in place, so that the hydraulic spare tire rack is prevented from being damaged by overload after the spare tire is lifted into place, thereby ensuring the safe operation of the hydraulic spare tire rack.

[0033] The use of hydraulic cylinders can be used to lift and lower large-mass spare tires, saving time and manpower; the dual-function pump with integrated flashlight can not only complete the functions of cab flipping and hydraulic spare tire rack lifting and lowering, but also realize electric and manual functions. It is highly integrated and has multiple uses for one pump, which reduces installation space and saves vehicle manufacturing costs.

[0034] Specifically, the reversing cylinder includes a cab flip reversing valve, a cab flip cylinder, a hydraulic spare tire rack lifting cylinder and a hydraulic spare tire rack lifting reversing valve. The cab flip cylinder is connected to the electronically controlled slide valve through the cab flip reversing valve, and the hydraulic spare tire rack lifting cylinder is connected to the electronically controlled slide valve through the hydraulic spare tire rack lifting reversing valve.

[0035] The function selection module includes a cab flip relay, a hydraulic spare tire rack lifting relay, a hydraulic spare tire rack lifting electric switch, a cab flip electric switch, a cab flip locking relay and a hydraulic spare tire rack lifting locking relay; the first end of the normally open switch of the cab flip relay is connected to the first interface of the third end of the electronically controlled slide valve, and the second end of the normally open switch of the cab flip relay is connected to the insurance module through the normally closed switch of the hydraulic spare tire rack lifting relay; the first end of the normally open switch of the hydraulic spare tire rack lifting relay is connected to the insurance module, and the second end of the normally open switch of the hydraulic spare tire rack lifting relay is connected to the second interface of the third end of the electronically controlled slide valve through the normally closed switch of the cab flip relay; the first end of the cab flip relay coil is connected to the insurance module through the cab flip electric switch, and the first end of the cab flip relay coil is also connected to the first end of the hydraulic spare tire rack lifting locking relay coil, and the second end of the cab flip relay coil is grounded; the hydraulic spare tire rack lifting relay The first end of the coil is connected to the insurance module through the hydraulic spare tire rack lifting electric switch, the first end of the coil of the hydraulic spare tire rack lifting relay is also connected to the first end of the coil of the cab flip lock relay, and the second end of the coil of the hydraulic spare tire rack lifting relay is grounded; the second end of the coil of the hydraulic spare tire rack lifting lock relay and the second end of the coil of the cab flip lock relay are both grounded; the first end of the normally open switch of the cab flip lock relay is connected to the insurance module, and the second end of the normally open switch of the cab flip lock relay is connected to the positive pole of the flashlight dual-function pump; the first end of the normally open switch of the hydraulic spare tire rack lifting lock relay is connected to the insurance module, and the second end of the normally open switch of the hydraulic spare tire rack lifting lock relay is connected to the positive pole of the flashlight dual-function pump through the tire lifted into place contact switch; the cab flip relay, the hydraulic spare tire rack lifting relay, the cab flip lock relay and the hydraulic spare tire rack lifting lock relay have an interlocking function to prevent the operator from operating incorrectly.

[0036] In addition, the dual-function hydraulic spare tire rack control system also includes an oil suction filter element, which is installed in the hydraulic oil tank, and the flashlight integrated dual-function pump is connected to the oil suction filter element through an oil pipeline.

[0037] The dual-function hydraulic spare tire rack control system also includes a hydraulic oil tank breathing valve, which is installed on the hydraulic oil tank. The hydraulic oil tank breathing valve ensures air circulation in the hydraulic oil tank and prevents impurities from entering the hydraulic oil tank.

[0038] The dual-function hydraulic spare tire rack control system also includes a return oil pipeline, a one-way valve and a flow control valve. The return oil pipeline is arranged between the electronically controlled slide valve and the hydraulic oil tank; the one-way valve is arranged on the return oil pipeline; the flow control valve is arranged on the return oil pipeline between the one-way valve and the electronically controlled slide valve; the flow control valve always controls the flow of the hydraulic system to ensure the smooth operation of the cab flip cylinder and the hydraulic spare tire rack lifting cylinder; the one-way valve prevents the hydraulic oil tank from being sucked back into the hydraulic circuit. After the cab or spare tire is lifted to any high point, the flashlight integrated dual-function pump stops working and locks the current position to prevent the spare tire from rising to a high position and hitting the tire lifting contact switch. After the power is cut off, the hydraulic spare tire rack falls due to its own gravity.

[0039] The hydraulic oil tank and the handlight integrated dual-function pump are installed on the lower side of the cab, and the cab flip reversing valve and the cab flip electric switch are installed on the frame near the cab to facilitate the cab flip operation; the hydraulic spare tire rack lift reversing valve and the hydraulic spare tire rack lift electric switch are installed near the hydraulic spare tire rack for easy operation; the cab flip relay, the hydraulic spare tire rack lift relay, the cab flip locking relay, the hydraulic spare tire rack lift locking relay, and the electronically controlled slide valve are installed near the handlight integrated dual-function pump.

[0040] The hydraulic oil in the hydraulic oil tank passes through the oil suction filter element and reaches the handlight integrated dual-function pump to generate high-pressure hydraulic oil. The high-pressure hydraulic oil is supplied to the cab flip reversing valve or the hydraulic spare tire rack lifting reversing valve through the electronically controlled slide valve. The cab flip reversing valve is operated to complete the extension or retraction of the cab flip cylinder, thereby achieving the purpose of cab flipping; the hydraulic spare tire rack lifting reversing valve is operated to complete the extension or retraction of the hydraulic spare tire rack lifting cylinder, thereby achieving the purpose of lifting the spare tire.

[0041] The 24V DC power supply is divided into 5 routes through the insurance module. The first route is through the cab flip lock relay, the tire lift contact switch or the hydraulic spare tire rack lift lock relay to the flashlight dual-function pump; the second route controls the cab flip relay and the hydraulic spare tire rack lift lock relay through the cab flip electric switch; the third route controls the hydraulic spare tire rack lift relay and the cab flip lock relay through the hydraulic spare tire rack lift electric switch; the fourth route controls the second interface of the third end of the electronically controlled slide valve through the cab flip relay and the hydraulic spare tire rack lift relay, and converts the high-pressure hydraulic source to the hydraulic spare tire rack lift reversing valve; the fifth route controls the first interface of the third end of the electronically controlled slide valve through the cab flip relay and the hydraulic spare tire rack lift relay, and converts the high-pressure hydraulic source to the cab flip reversing valve.

[0042] The cab tilt relay and the hydraulic spare tire rack lift relay interlock the fourth and fifth power supplies to prevent the left and right ends of the electronically controlled spool valve from operating simultaneously. When the cab tilt relay and the hydraulic spare tire rack lift relay are inoperative, the electronically controlled spool valve is in neutral, locking the cab tilt cylinder and the hydraulic spare tire rack lift cylinder in their current positions. The hydraulic spare tire rack lift electric switch is engaged, controlling the hydraulic spare tire rack lift relay and the cab tilt lock relay. Once the spare tire is raised to the designated position and touches the raised tire, the contact switch disconnects the power to the integrated flashlight dual-function pump, causing it to cease operation.

[0043] The above disclosure is only a preferred embodiment of the present invention, but the present invention is not limited thereto. Any non-creative changes that can be thought of by those skilled in the art, as well as several improvements and modifications made without departing from the principles of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A dual-function hydraulic spare tire rack control system, characterized in that: It includes a hydraulic oil tank, a dual-function pump with integrated flashlight, an electronically controlled slide valve, a reversing cylinder module, a function selection module, a safety module, and a tire lift-in-place contact switch; The hydraulic oil tank is connected to the oil supply end of the electric control slide valve through the handheld and electric dual-function pump, the oil outlet end of the electric control slide valve is connected to the reversing cylinder module, the electric control end of the electric control slide valve is connected to the first end of the function selection module, the second end of the function selection module is connected to the first end of the insurance module, the third end of the function selection module is connected to the positive electrode of the handheld and electric dual-function pump through the tire lift position contact switch, the fourth end of the function selection module is connected to the positive electrode of the handheld and electric dual-function pump, and the second end of the insurance module is connected to the DC power supply; The reversing cylinder module includes a cab flip reversing valve, a cab flip cylinder, a hydraulic spare tire rack lifting cylinder, and a hydraulic spare tire rack lifting reversing valve. The cab flip cylinder is connected to the electric control slide valve through the cab flip reversing valve, and the hydraulic spare tire rack lifting cylinder is connected to the electric control slide valve through the hydraulic spare tire rack lifting reversing valve. The function selection module includes a cab tilt relay, a hydraulic spare tire rack lifting relay, a hydraulic spare tire rack lifting electric switch, a cab tilt electric switch, a cab tilt lock relay, and a hydraulic spare tire rack lifting lock relay; A first end of the normally open switch of the cab flip relay is connected to a first interface of the electric control end of the electric control slide valve, and a second end of the normally open switch of the cab flip relay is connected to the insurance module through a normally closed switch of the hydraulic spare tire rack lifting relay; A first end of the normally open switch of the hydraulic spare tire rack lifting relay is connected to the insurance module, and a second end of the normally open switch of the hydraulic spare tire rack lifting relay is connected to a second interface of the electric control end of the electric control slide valve through a normally closed switch of the cab flip relay; A first end of a cab flip relay coil is connected to a fuse module via a cab flip electric switch, a first end of the cab flip relay coil is further connected to a first end of a hydraulic spare tire rack lifting and locking relay coil, and a second end of the cab flip relay coil is grounded; A first end of a coil of a hydraulic spare tire rack lifting relay is connected to a fuse module via a hydraulic spare tire rack lifting electric switch. The first end of the coil of the hydraulic spare tire rack lifting relay is also connected to a first end of a coil of a cab tilt lock relay. A second end of the coil of the hydraulic spare tire rack lifting relay is grounded. The second end of the coil of the hydraulic spare tire rack lifting lock relay and the second end of the coil of the cab tilting lock relay are both grounded; A first end of the normally open switch of the cab rollover lock relay is connected to the insurance module, and a second end of the normally open switch of the cab rollover lock relay is connected to the positive electrode of the flashlight dual-function pump through the tire lift-in-place contact switch; A first end of the normally open switch of the hydraulic spare tire rack lifting and locking relay is connected to the insurance module, and a second end of the normally open switch of the hydraulic spare tire rack lifting and locking relay is connected to the positive pole of the flashlight integrated dual-function pump.

2. A dual-function hydraulic spare tire rack control system according to claim 1, characterized in that: It also includes an oil suction filter element, which is installed in the hydraulic oil tank. The handheld and light-integrated dual-function pump is connected to the oil suction filter element through an oil pipeline.

3. The dual-function hydraulic spare tire rack control system according to claim 1, characterized in that: It also includes a hydraulic oil tank breathing valve, which is installed on the hydraulic oil tank.

4. The dual-function hydraulic spare tire rack control system according to claim 1, characterized in that: It also includes an oil return pipeline, which is arranged between the electronically controlled slide valve and the hydraulic oil tank.

5. A dual-function hydraulic spare tire rack control system according to claim 4, characterized in that: It also includes a one-way valve, which is arranged on the oil return pipeline.

6. The dual-function hydraulic spare tire rack control system according to claim 5, characterized in that: The utility model also comprises a flow control valve, which is arranged on the oil return pipeline between the one-way valve and the electric control slide valve.

7. The dual-function hydraulic spare tire rack control system according to claim 1, characterized in that: The DC power supply uses a 24V DC power supply.

8. The dual-function hydraulic spare tire rack control system according to claim 1, characterized in that: The tire lift-in-place contact switch is installed on the fixing bracket of the hydraulic spare tire bracket.

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