Multifunctional accessory control system of skid steer loader

Abstract

The utility model relates to a multifunctional accessory control system of a skid steer loader. The technical problems that in the prior art, different accessories cannot be rapidly replaced, and a driver is prone to fatigue after long-time work are solved. Comprising a whole loader, the whole loader is provided with a storage battery, a hydraulic pilot electromagnetic valve and a hydraulic main valve, the hydraulic pilot electromagnetic valve and the hydraulic main valve are both connected with an operating handle, an accessory assembly is installed on the whole loader through a quick change device, the storage battery is connected with an unauthorized switch through a starting switch, and the unauthorized switch is connected with a hydraulic driving device. And the storage battery is connected with the hydraulic pilot electromagnetic valve through the pedal control switch or the storage battery is connected with the hydraulic pilot electromagnetic valve through the unauthorized switch. The loading machine has the advantages that the problem that different accessories cannot be rapidly replaced when the loading machine deals with various working conditions is solved through the rapid replacement device, a driver can leave a driving position to have a rest on the premise that the surrounding is safe, and fatigue driving is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of loader control systems, and particularly relates to a multi-functional attachment control system for a skid steer loader. Background Art

[0002] With the continuous development of the construction machinery industry, the requirements for various construction machinery and equipment are getting higher and higher. It not only needs to be efficient and energy-saving, but also has to be equipped with a variety of attachments to meet the needs of different working conditions, while also taking into account safety and operating comfort. Most of the current loaders can only be equipped with a general bucket to shovel and transport materials, and cannot quickly replace other types of attachments, such as mixers, sieves, drill rigs, etc., so they cannot meet the operation requirements of mixing, filtering, drilling, etc. And when the loader operates continuously in place, such as mixing and filtering materials in place, the driver still needs to control the machine in real time. Long-term single operation is very likely to make the driver fatigued and cause safety accidents. Summary of the Invention

[0003] The purpose of the utility model is to solve the above problems and provide a multi-functional attachment control system for a skid steer loader.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions: A multi-functional attachment control system for a skid steer loader, including the whole loader. The whole loader has a storage battery, a hydraulic pilot solenoid valve, and a hydraulic main valve. The hydraulic pilot solenoid valve and the hydraulic main valve are both connected to a control handle. An attachment assembly detachably connected to the whole loader and the hydraulic main valve is installed on the whole loader through a quick-change device. The storage battery is connected to an override switch through a start switch. The override switch is connected to a hydraulic drive device respectively connected to the hydraulic main valve and the hydraulic pilot solenoid valve. The storage battery is connected to the hydraulic pilot solenoid valve through a foot control switch or the storage battery is connected to the hydraulic pilot solenoid valve through the override switch. The storage battery is the power source for all electrical components. The start switch is used to control the start and stop of the hydraulic drive device. The hydraulic pilot solenoid valve is used to convert an electrical signal into a pressure signal of a low-pressure control oil circuit. The hydraulic main valve is used to adjust the pressure of a high-pressure working oil circuit according to the hydraulic pilot pressure.

[0005] In the above multi-functional attachment control system for a skid steer loader, the quick-change device includes an attachment connection block arranged at one end of the whole loader. The attachment connection block has a rectangular structure. One end of the attachment assembly is provided with an attachment mounting seat. An attachment mounting groove corresponding to the attachment connection block is arranged in the attachment mounting seat. And pin members fixed to the attachment mounting seat are respectively arranged on both sides of the end of the attachment connection block far from the attachment mounting seat.

[0006] In the above-mentioned multi-functional attachment control system of a skid steer loader, the hydraulic main valve is respectively connected with an attachment high-pressure working oil circuit having quick-connect fittings, and the attachment assembly is connected to the attachment high-pressure working oil circuit of the hydraulic main valve through the quick-connect fittings. The attachment connecting block is designed as a rectangular connecting block, and a common high-pressure working oil circuit is reserved. The attachment mounting groove of the attachment assembly matches the attachment connecting block. The driver operates the machine to install the attachment connecting block into the attachment mounting groove and makes it reliably connected through a pin shaft component. At the same time, any attachment can be quickly replaced as long as it is equipped with a suitable mounting groove.

[0007] In the above-mentioned multi-functional attachment control system of a skid steer loader, the hydraulic drive device includes an engine connected with a hydraulic pump, and the hydraulic pump is connected to a hydraulic oil tank. The engine is connected to a start switch through an override switch, and the hydraulic pump is respectively connected to a hydraulic main valve and a hydraulic pilot solenoid valve. The engine drives the hydraulic pump to move. The hydraulic pump sucks hydraulic oil from the hydraulic oil tank and converts it into high-pressure oil, and the hydraulic oil tank is used to store hydraulic oil.

[0008] In the above-mentioned multi-functional attachment control system of a skid steer loader, the foot control switch includes a foot pedal, and an electromagnetic switch connected to a battery and a hydraulic pilot solenoid valve is arranged on the lower side of the foot pedal. The foot pedal is the standing place for the driver, and the electromagnetic switch is used to detect whether the foot pedal is depressed.

[0009] In the above-mentioned multi-functional attachment control system of a skid steer loader, the override switch has a safety protection module. The override switch is used to control the hydraulic pilot solenoid valve.

[0010] In the above-mentioned multi-functional attachment control system of a skid steer loader, the safety protection module includes a normally open switch group and a normally closed switch group. The battery is connected to the hydraulic pilot solenoid valve through the normally open switch group, and when the normally open switch group is pressed, the normally open switch group switches to a closed state. The start switch is connected to the hydraulic drive device through the normally closed switch group, and when the normally closed switch group is pressed, the normally closed switch group switches to an open state. The override switch internally integrates two groups of switches, one is a normally open switch group and the other is a normally closed switch group. The normally open switch group is used to control the hydraulic pilot solenoid valve. When the switch is pressed, the normally open switch group switches to a closed state. The normally closed switch group is used to control the engine start. When the switch is pressed, the normally closed switch group switches to an open state.

[0011] In the above-mentioned multi-functional attachment control system of a skid steer loader, the attachment assembly is any one of a stirrer, a sieve, and a drill.

[0012] Compared with the existing technology, the advantages of the present utility model are as follows:

[0013] 1. This device uses a quick-change device to solve the problem that a loader cannot quickly replace different attachments when dealing with multiple working conditions.

[0014] 2. When the designed structure of this device acts continuously in place, the driver can leave the driving position to rest on the premise of surrounding safety, avoiding potential safety hazards caused by fatigue driving.

[0015] 3. This device adds an anti-misoperation function through an override switch, taking into account safety. Description of the Drawings

[0016] Figure 1 is the system diagram of the present utility model.

[0017] Figure 2 is the structural schematic diagram of the quick-change device in the present utility model.

[0018] Figure 3 is the structural schematic diagram of the attachment mounting seat in the present utility model.

[0019] Figure 4 is the structural schematic diagram of the present utility model in the powered-on state.

[0020] Figure 5 is the structural schematic diagram of the present utility model in the starting state.

[0021] Figure 6 is the structural schematic diagram of the present utility model in the override control and start protection state.

[0022] In the figure: main hydraulic valve 1, control lever 11, foot control switch 12, attachment high-pressure working oil circuit 13, quick connector 14, foot pedal 15, quick-change device 2, attachment connection block 21, pin member 22, attachment assembly 3, attachment mounting seat 31, attachment mounting groove 32, agitator 33, screen 34, drill 35, hydraulic drive device 4, engine 41, hydraulic pump 42, hydraulic oil tank 43, storage battery G002, hydraulic pilot solenoid valve Y013, switch S001, override switch S207, electromagnetic switch S028. Detailed Embodiments

[0023] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0024] As Figure 1-3As shown in the figure, a multi-functional attachment control system for a skid steer loader includes the entire loader. The entire loader has a storage battery G002, a hydraulic pilot solenoid valve Y013, and a hydraulic main valve 1. Both the hydraulic pilot solenoid valve Y013 and the hydraulic main valve 1 are connected to the control handle 11. An attachment assembly 3 detachably connected to the entire loader and the hydraulic main valve 1 is installed on the entire loader through a quick-change device 2. The storage battery G002 is connected to an override switch S207 through a start switch S001. The override switch S207 is connected to a hydraulic drive device 4 respectively connected to the hydraulic main valve 1 and the hydraulic pilot solenoid valve Y013. The storage battery G002 is connected to the hydraulic pilot solenoid valve Y013 through a foot control switch 12 or the storage battery G002 is connected to the hydraulic pilot solenoid valve Y013 through the override switch S207. The storage battery G002 is the power source for all electrical components. The start switch S001 is used to control the start and stop of the hydraulic drive device 4. The hydraulic pilot solenoid valve Y013 is used to convert an electrical signal into a pressure signal of a low-pressure control oil circuit. The hydraulic main valve 1 is used to adjust the pressure of a high-pressure working oil circuit according to the hydraulic pilot pressure.

[0025] Combined Figure 2 with Figure 3 As shown in the figure, the quick-change device 2 includes an attachment connection block 21 provided at one end of the entire loader. The attachment connection block 21 has a rectangular structure. One end of the attachment assembly 3 is provided with an attachment mounting seat 31. An attachment mounting groove 32 corresponding to the attachment connection block 21 is provided in the attachment mounting seat 31. Pin shafts 22 fixed to the attachment mounting seat 31 are respectively provided on both sides of one end of the attachment connection block 21 away from the attachment mounting seat 31.

[0026] Among them, a high-pressure working oil circuit 13 for the attachment with a quick connector 14 is respectively connected to the hydraulic main valve 1. The attachment assembly 3 is connected to the high-pressure working oil circuit 13 for the attachment of the hydraulic main valve 1 through the quick connector 14. The attachment connection block 21 is designed as a rectangular connection block, and a common high-pressure working oil circuit 17 is reserved. The attachment mounting groove 32 of the attachment assembly 3 matches the attachment connection block 21. The driver operates the machine to insert the attachment connection block 21 into the attachment mounting groove 32 and makes it reliably connected through the pin shafts 22. At the same time, any attachment can be quickly replaced as long as it is equipped with a suitable mounting groove.

[0027] As Figure 1 shown in the figure, the hydraulic drive device 4 includes an engine 41 connected to a hydraulic pump 42. The hydraulic pump 42 is connected to a hydraulic oil tank 43. The engine 41 is connected to the start switch S001 through the override switch S207. The hydraulic pump 42 is respectively connected to the hydraulic main valve 1 and the hydraulic pilot solenoid valve Y013. The engine 41 drives the hydraulic pump 42 to move. The hydraulic pump 42 sucks hydraulic oil from the hydraulic oil tank 43 and converts it into high-pressure oil. The hydraulic oil tank 43 is used to store hydraulic oil.

[0028] Among them, the foot control switch 12 includes a foot pedal 15, and an electromagnetic switch S028 is provided on the lower side of the foot pedal 15 and is connected to the storage battery G002 and the hydraulic pilot solenoid valve Y013. The foot pedal 15 is the place where the driver stands, and the electromagnetic switch S028 is used to detect whether the foot pedal 15 is stepped on.

[0029] Specifically, the override switch S207 has a safety protection module. The override switch S207 is used to control the hydraulic pilot solenoid valve Y013.

[0030] Furthermore, the safety protection module includes a normally open switch group and a normally closed switch group. The storage battery G002 is connected to the hydraulic pilot solenoid valve Y013 through the normally open switch group, and when the normally open switch group is pressed, the normally open switch group switches to a closed state. The start switch S001 is connected to the hydraulic drive device 4 through the normally closed switch group, and when the normally closed switch group is pressed, the normally closed switch group switches to an open state. The override switch S207 internally integrates two groups of switches, one is a normally open switch group and the other is a normally closed switch group. The normally open switch group is used to control the hydraulic pilot solenoid valve Y013. When the switch is pressed, the normally open switch group switches to a closed state. The normally closed switch group is used to control the start of the engine 41. When the switch is pressed, the normally closed switch group switches to an open state.

[0031] Furthermore, the attachment assembly 3 is any one of a stirrer 33, a sieve 34, and a drill 35.

[0032] The specific operation method includes the following steps:

[0033] S1. When the driver is in the operating position, the voltage of the storage battery G002 is transmitted to the foot control switch 12 through a wire. The driver steps on the foot control switch 12 to make it conductive, and the voltage continues to be transmitted to the hydraulic pilot solenoid valve Y013; or, when the driver is not in the operating position, the driver presses the override switch S207 to transmit the voltage of the storage battery G002 to the hydraulic pilot solenoid valve Y013;

[0034] S2. The hydraulic pilot solenoid valve Y013 makes the low-pressure control oil circuit conductive and transmits it to the control handle 11;

[0035] S3. The driver operates the control handle 11 to transmit the pressure of the low-pressure control oil circuit to the hydraulic main valve 1;

[0036] S4. The hydraulic main valve 1 makes the high-pressure working oil circuit conductive and transmits the high-pressure oil provided by the hydraulic pump 42 to the attachment assembly 3 through a pipeline, so that it completes the corresponding work according to the driver's intention.

[0037] In step S1, if the driver forgets to lift the override switch S207 when the machine is stopped, and the control handle 11 is in the working position, and the attachment assembly 3 is already in the operable state, if the engine 41 is started, the high-pressure working oil provided by the hydraulic pump 42 will directly cause the attachment assembly 3 to move. To ensure safety and prevent misoperation by the driver, the override switch S207 will disconnect the engine 41 starting circuit through the internal normally closed switch group, preventing the engine 41 from starting; after lifting the override switch S207, the engine 41 can be started normally.

[0038] As Figure 4 shown, the thin solid line represents no current passing through, and the thick solid line represents current passing through. The main power switch S008 is closed, the start switch S001 is turned to the energized position, and current is output from port 6.

[0039] As Figure 5 shown, the start switch S001 is turned to the start position, current is output from port 7, port 50 of the starter M001 is energized, and the starter M001 starts. The driver stands at the operating position and steps on the foot pedal 15 to close the solenoid switch S028. Subsequently, the pilot relay K152 and the attachment relay K149 are turned on, and the hydraulic pilot solenoid valve Y013 and the attachment solenoid valve Y208 are energized to build pressure in the hydraulic system, allowing the control handle 11 to control the movement of the attachment.

[0040] As Figure 6 shown, when the override switch S207 is pressed: the connection between port 5 - port 7 is switched to port 5 - port 1, disconnecting the start signal; the connection between port 6 - port 8 is switched to port 6 - port 2, controlling the attachment solenoid valve Y208. When the driver leaves the operating position, the solenoid switch S028 is disconnected, and the pilot relay K152 and the attachment relay K149 are switched to the off state, while the attachment solenoid valve Y208 is powered by the override switch S207.

[0041] The principle of this embodiment is as follows:

[0042] The whole loader adopts a quick-change device 2. The quick-change device 2 can be connected to a variety of attachments. The attachment assembly 3 is connected to the attachment connection block 21 of the quick-change device 2 through the attachment mounting seat 31. The attachment connection block 21 is installed in the attachment mounting groove 32, and then the attachment connection block 21 and the attachment mounting seat 31 are fixed with a pin member 22. At the same time, the attachment assembly 3 is connected to the attachment high-pressure working oil circuit 13 through a quick connector 14, thus realizing the operation of the attachment assembly 3.

[0043] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0044] Although terms such as hydraulic main valve 1, control handle 11, foot control switch 12, attachment high-pressure working oil circuit 13, quick-connect fitting 14, foot pedal 15, quick-change device 2, attachment connection block 21, pin member 22, attachment assembly 3, attachment mounting seat 31, attachment mounting groove 32, agitator 33, screen 34, drilling machine 35, hydraulic drive device 4, engine 41, hydraulic pump 42, hydraulic oil tank 43, storage battery G002, hydraulic pilot solenoid valve Y013, switch S001, unauthorized switch S207, electromagnetic switch S028 are used more frequently herein, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A multifunctional attachment control system for a skid steer loader, comprising a loader as a whole, the loader as a whole having a battery (G002), a hydraulic pilot solenoid valve (Y013) and a hydraulic main valve (1), the hydraulic pilot solenoid valve (Y013) and the hydraulic main valve (1) both being connected to a control handle (11), characterized in that: The loader is provided with an accessory assembly (3) detachably connected to the loader and the hydraulic main valve (1) via a quick-change device (2); the battery (G002) is connected to an override switch (S207) via a start switch (S001); the override switch (S207) is connected to a hydraulic drive device (4) respectively connected to the hydraulic main valve (1) and the hydraulic pilot solenoid valve (Y013); the battery (G002) is connected to the hydraulic pilot solenoid valve (Y013) via a foot control switch (12) or the battery (G002) is connected to the hydraulic pilot solenoid valve (Y013) via the override switch (S207).

2. The multifunctional attachment control system of a skid loader according to claim 1, characterized in that: The quick-change device (2) comprises an accessory connecting block (21) arranged at one end of the loader, the accessory connecting block (21) is of a rectangular structure, one end of the accessory assembly (3) is provided with an accessory mounting seat (31), the accessory mounting seat (31) is provided with an accessory mounting groove (32) corresponding to the accessory connecting block (21), and pin shaft members (22) fixed to the accessory mounting seat (31) are respectively provided on both sides of one end of the accessory connecting block (21) away from the accessory mounting seat (31).

3. The multifunctional attachment control system of a skid loader according to claim 2, characterized in that: The hydraulic main valve (1) is respectively connected to an accessory high-pressure working oil circuit (13) having a quick-connect connector (14), and the accessory assembly (3) is connected to the accessory high-pressure working oil circuit (13) of the hydraulic main valve (1) via the quick-connect connector (14).

4. A multifunctional attachment control system for a skid loader according to claim 1, 2 or 3, characterized in that: The hydraulic drive device (4) comprises an engine (41) connected to a hydraulic pump (42), and the hydraulic pump (42) is connected to a hydraulic oil tank (43), the engine (41) is connected to a start switch (S001) via an override switch (S207), and the hydraulic pump (42) is respectively connected to a hydraulic main valve (1) and a hydraulic pilot solenoid valve (Y013).

5. The multifunctional attachment control system of a skid loader according to claim 4, characterized in that: The foot control switch (12) comprises a foot pedal (15), and an electromagnetic switch (S028) connected to a battery (G002) and a hydraulic pilot electromagnetic valve (Y013) is provided on the lower side of the foot pedal (15).

6. The multifunctional attachment control system of a skid loader according to claim 1, characterized in that: The over-authorization switch (S207) has a safety protection module.

7. The multifunctional attachment control system of a skid loader according to claim 6, characterized in that: The safety protection module comprises a normally open switch group and a normally closed switch group, the battery (G002) is connected to the hydraulic pilot solenoid valve (Y013) via the normally open switch group and when the normally open switch group is pressed, the normally open switch group switches to a closed state, the start switch (S001) is connected to the hydraulic drive device (4) via the normally closed switch group and when the normally closed switch group is pressed, the normally closed switch group switches to an open state.

8. The multifunctional attachment control system of a skid loader according to claim 1, characterized in that: The accessory component (3) is any one of a stirrer (33), a screen (34) and a drilling machine (35).

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