Traction pin and support leg control device for mining cage truck

Abstract

The present invention provides a traction pin and support leg control device for a mining tank cage truck, comprising a traction vehicle air bag, a trailer air bag, a traction pin button, a traction pin cylinder, a support leg cylinder and an air control valve, wherein the traction pin button has an air inlet P, an execution port A and an air outlet T, and the air control valve has an air inlet P, an execution port A, an air outlet T and an air control port K. The air inlet P of the traction pin button is connected to the traction vehicle air bag, the execution port A of the traction pin button is respectively connected to the rodless cavity of the traction pin cylinder and the control port K of the air control valve, the air inlet P of the air control valve is connected to the trailer air bag, the execution port A of the air control valve is connected to the rodless cavity of the support leg cylinder, and the air outlets T of the traction pin button and the air control valve are both connected to the atmosphere. The present invention can effectively solve the technical problem that the existing similar control devices cannot realize that the support leg is automatically supported on the ground when the traction pin is disengaged and the support leg automatically leaves the ground when the traction pin is connected, and can improve work efficiency.

Description

Technical Field

[0001] The invention relates to a mining cage truck, in particular to a traction pin and a supporting leg control device of the mining cage truck. Background Art

[0002] In coal mines with vertical shaft mining, vehicles on the ground need to drive into the cage, which will transport the vehicles underground and then drive them out of the cage. Due to the limited size of the cage, vehicles that are too long will not be able to drive into the cage, and vehicles that are too short will affect the vehicle's loading capacity. To address this problem, coal mines now generally use mining cage vehicles. Mining cage vehicles consist of a trailer and two tractors located on the ground and underground. In the ground transportation state, the tractor on the ground is connected to the trailer through the traction seat and traction pin, the support legs are folded, the trailer is driven into the cage, the traction pin is disengaged, the support legs are lowered, the tractor drives away, and after the trailer is transported underground through the cage, the tractor underground is connected to the trailer through the traction seat and traction pin, the support legs are folded, and the vehicle enters the underground transportation state. Since the tractor does not need to be transported underground through the cage (only the trailer needs to be transported underground), the loading capacity of the mining cage vehicle will not be affected by the limited size of the cage. When the trailer of a mining cage truck is separated from the tractor, the front of the trailer must be supported by support legs, which can use the support legs of a new trailer support device disclosed in the Chinese patent document with publication number CN106740733A. The tractor and trailer of the mining cage truck must be connected through a traction seat and a traction pin, and the traction seat and traction pin used for connection can use the traction seat and traction pin in the automatic towing traction seat disclosed in the Chinese patent document with authorization announcement number CN217124961U.

[0003] The existing traction pin and support leg control device of the mining tank cage car is as follows Figure 1As shown, it includes a tractor air bag 1, a trailer air bag 2, a traction pin button 3, a traction pin cylinder 4 (equivalent to the cylinder 6 in CN 217124961U), a support leg button 5 and a support leg cylinder 6 (equivalent to the drive cylinder 4 in CN106740733A). The air inlet P of the traction pin button 3 is connected to the tractor air bag 1, the execution port A of the traction pin button 3 is connected to the rodless cavity of the traction pin cylinder 4, and the air outlet T of the traction pin button 3 is connected to the atmosphere. The air inlet P of the support leg button 5 is connected to the trailer air bag 2, the execution port A of the support leg button 5 is connected to the rodless cavity of the support leg cylinder 6, and the air outlet T of the support leg button 5 is connected to the atmosphere. The support leg button 5 is installed on the trailer. The cylinder body of the traction pin cylinder 4 is connected to the traction seat, and the piston rod of the traction pin cylinder 4 is connected to the swing arm (equivalent to the bottom end of the cylinder 6 in CN217124961U being fixed to the fixed bracket of the traction seat plate 1 by bolts, and the telescopic rod 61 of the cylinder 6 being connected to the swing arm 5 by a pin shaft). The cylinder body of the support leg cylinder 6 is connected to the frame of the trailer, and the piston rod of the support leg cylinder 6 is connected to the support leg (equivalent to the rear end of the driving cylinder 4 in CN106740733A being hingedly connected to the frame 1, and the end of the piston rod of the driving cylinder 4 being hingedly connected to the middle of the support leg 2).

[0004] The working principle of the existing traction pin and support leg control device of the mining tank cage car is as follows: Figure 1 As shown, when the trailer enters the cage, the traction pin needs to be disengaged and the support leg is lowered. At this time, the traction pin button 3 can be operated first to make the execution port A of the traction pin button 3 communicate with the gas outlet T, and the pressure gas in the rodless chamber of the traction pin cylinder 4 is discharged into the atmosphere through the traction pin button 3, and the piston rod of the traction pin cylinder 4 is retracted, and the traction pin is disengaged. Then operate the support leg button 5, so that the air inlet P of the support leg button 5 is connected with the execution port A, and the pressure gas in the trailer air bag 2 reaches the rodless chamber of the support leg cylinder 6 through the support leg button 5, and the piston rod of the support leg cylinder 6 extends, the support leg is supported on the cage ground, and the tractor on the ground drives away. When the trailer is transported to the underground through the cage, the traction pin button 3 can be operated first to make the air inlet P of the traction pin button 3 communicate with the execution port A, and the rodless chamber of the traction pin cylinder 4 is passed through the pressure gas, and the piston rod of the traction pin cylinder 4 is extended, and the traction pin is in the connected state. Then operate the support leg button 5, so that the execution port A of the support leg button 5 is connected with the gas outlet T, and the pressure gas in the rodless chamber of the support leg cylinder 6 is discharged into the atmosphere through the support leg button 5, and the piston rod of the support leg cylinder 6 is retracted, the support leg leaves the ground, and the vehicle enters the underground transportation state. The traction pin and support leg control device of the existing mining tank cage vehicle cannot realize that the support leg is automatically supported on the ground when the traction pin is disengaged, and it cannot realize that the support leg automatically leaves the ground when the traction pin is connected. Summary of the invention

[0005] The purpose of the present invention is to provide a traction pin and support leg control device for a mining tank cage vehicle, which can realize that the support legs are automatically supported on the ground when the traction pin is disengaged and the support legs automatically leave the ground when the traction pin is connected.

[0006] The technical solution of the present invention is as follows: the traction pin and support leg control device of the mining tank cage vehicle of the present invention comprises a traction vehicle air bag, a trailer air bag, a traction pin button, a traction pin cylinder and a support leg cylinder, the cylinder body of the traction pin cylinder is connected to the traction seat of the mining tank cage vehicle, the piston rod of the traction pin cylinder is connected to the swing arm of the mining tank cage vehicle, the cylinder body of the support leg cylinder is connected to the frame of the trailer of the mining tank cage vehicle, the piston rod of the support leg cylinder is connected to the support leg of the trailer, and the traction pin button has an air inlet P , execution port A and air outlet T, its structural features are: it also includes an air-controlled valve, the above-mentioned air-controlled valve has an air inlet P, an execution port A, an air outlet T and an air-controlled port K, the air inlet P of the above-mentioned traction pin button is connected with the traction vehicle air bag, the execution port A of the traction pin button is respectively connected with the rodless cavity of the traction pin cylinder and the control port K of the air-controlled valve, the air inlet P of the air-controlled valve is connected with the trailer air bag, the execution port A of the air-controlled valve is connected with the rodless cavity of the support leg cylinder, and the air outlets T of the traction pin button and the air-controlled valve are connected with the atmosphere.

[0007] A further solution is: the traction pin button is a button of model XQ230420.

[0008] A further solution is that the above-mentioned air control valve 7 is a two-position three-way air control valve of model JQ231030.

[0009] A further solution is: the traction pin and support leg control device of the above-mentioned mining tank cage vehicle also includes a support leg button and a pneumatic reversing valve, the above-mentioned support leg button has an air inlet P, an execution port A and an air outlet T, and the pneumatic reversing valve has a first air inlet P1, a second air inlet P2, an execution port A and a pneumatic control port K; the above-mentioned support leg button is installed on the trailer and the air inlet P and the execution port A of the support leg button are respectively connected to the air bag of the trailer and the air inlet P of the pneumatic control valve, and the air outlet T of the support leg button is connected to the atmosphere. The air-controlled reversing valve is arranged on the air passage from the execution port A of the traction pin button to the rodless chamber of the traction pin cylinder, and the second air inlet port P2 of the air-controlled reversing valve is connected with the execution port A of the traction pin button, the first air inlet port P1 of the air-controlled reversing valve is connected with the air bag of the traction vehicle, the execution port A of the air-controlled reversing valve is connected with the rodless chamber of the traction pin cylinder, and the air control port K of the air-controlled reversing valve is connected with the execution port A of the support leg button; the execution port A of the above-mentioned traction pin button is connected with the control port K of the air-controlled valve through the provided connecting air pipe.

[0010] A further solution is: the supporting leg button is a button of model XQ230422.

[0011] A further solution is: the above-mentioned air-controlled reversing valve is a JQ231530 air-controlled reversing valve.

[0012] The present invention has positive effects: through improved structural design, the present invention can realize a one-button operation in which the support legs are automatically lowered when the traction pin is disengaged when the trailer is towed by a ground tractor into the tank cage, and the support legs are automatically retracted when the trailer is transported underground by the tank cage and connected to the traction pin of the underground tractor. This can effectively solve the technical problems in the prior art that the traction pin and support leg control device of the mining tank cage truck cannot realize the automatic support of the support legs on the ground when the traction pin is disengaged, and cannot realize the automatic departure of the support legs from the ground when the traction pin is connected, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a traction pin and a support leg control device of a mining cage truck in the prior art;

[0014] Figure 2 A schematic diagram of the structure of an embodiment of the present invention;

[0015] Figure 3 It is a structural schematic diagram of another embodiment of the present invention.

[0016] The reference numerals in the above drawings are as follows:

[0017] Tractor air bag 1, trailer air bag 2, traction pin button 3, traction pin cylinder 4, support leg button 5, support leg cylinder 6, air control valve 7, air control reversing valve 8, connecting air pipe 9. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] (Example 1)

[0020] See Figure 2 The traction pin and support leg control device of the mining cage truck of this embodiment includes a traction vehicle air bag 1, a trailer air bag 2, a traction pin button 3, a traction pin cylinder 4, a support leg cylinder 6 and an air control valve 7.

[0021] The traction pin button 3 is a button of model XQ230420, which has an air inlet P, an execution port A and an air outlet T. The air control valve 7 is a two-position three-way air control valve of model JQ231030, which has an air inlet P, an execution port A, an air outlet T and an air control port K.

[0022] The air inlet P of the traction pin button 3 is connected to the tractor air bag 1, the execution port A of the traction pin button 3 is respectively connected to the rodless cavity of the traction pin cylinder 4 and the control port K of the air control valve 7, the air inlet P of the air control valve 7 is connected to the trailer air bag 2, the execution port A of the air control valve 7 is connected to the rodless cavity of the support leg cylinder 6, and the air outlet T of the traction pin button 3 and the air outlet T of the air control valve 7 are both connected to the atmosphere. When the air control port K of the air control valve 7 is not fed with pressurized gas, the air inlet P of the air control valve 7 is connected with the execution port A, and when the air control port K of the air control valve 7 is fed with pressurized gas, the execution port A of the air control valve 7 is connected with the air outlet T.

[0023] The cylinder body of the traction pin cylinder 4 is connected to the traction seat, and the piston rod of the traction pin cylinder 4 is connected to the swing arm. The cylinder body of the support leg cylinder 6 is connected to the frame of the trailer, and the piston rod of the support leg cylinder 6 is connected to the support leg. The technical features recorded in this paragraph are the same as those of the prior art.

[0024] The working principle of the traction pin and support leg control device of the mining cage vehicle of this embodiment is briefly described as follows:

[0025] See also Figure 2 When the tractor on the ground tows the trailer into the tank cage, it is necessary to disengage the traction pin and lower the supporting leg. At this time, the traction pin button 3 is operated to connect the execution port A of the traction pin button 3 with the air outlet T, and the pressurized gas in the rodless chamber of the traction pin cylinder 4 is discharged into the atmosphere through the traction pin button 3, the piston rod of the traction pin cylinder 4 is retracted, and the traction pin is disengaged; at the same time, no pressurized gas is introduced into the air control port K of the air control valve 7, and the air inlet P of the air control valve 7 is connected with the execution port A, and the pressurized gas in the trailer air bag 2 reaches the rodless chamber of the supporting leg cylinder 6 through the air inlet P of the air control valve 7, the piston rod of the supporting leg cylinder 6 is extended, and the supporting leg is supported on the ground of the tank cage, so that the supporting leg can be automatically supported on the ground when the traction pin is disengaged, and the tractor on the ground can drive away.

[0026] When the trailer is transported underground through the cage, the traction pin button 3 can be operated to connect the air inlet P of the traction pin button 3 with the execution port A, and the pressurized gas in the traction vehicle air bag 1 reaches the rodless chamber of the traction pin cylinder 4 through the traction pin button 3, and the piston rod of the traction pin cylinder 4 extends, and the traction pin is in the connected state. At the same time, the air control port K of the air control valve 7 is introduced with pressurized gas, and the execution port A of the air control valve 7 is connected with the air outlet T, and the pressurized gas in the rodless chamber of the supporting leg cylinder 6 is discharged into the atmosphere through the air outlet T of the air control valve 7, and the piston rod of the supporting leg cylinder 6 is retracted, and the supporting leg automatically leaves the ground. When the traction pin is connected, the supporting leg automatically leaves the ground, and the trailer can be towed by the tractor on the ground into the underground transportation state.

[0027] (Example 2)

[0028] See Figure 3The traction pin and support leg control device of the mining cage truck of this embodiment is different from that of Example 1 in that it further includes a support leg button 5 and a pneumatically controlled reversing valve 8 on the basis of Example 1.

[0029] The support leg button 5 is a button of model XQ230422, which has an air inlet P, an execution port A and an air outlet T. The air control reversing valve 8 is a air control reversing valve of model JQ231530, which has a first air inlet P1, a second air inlet P2, an execution port A and an air control port K.

[0030] The supporting leg button 5 is installed on the trailer and is arranged on the air passage from the trailer air bag 2 to the air inlet P of the air control valve 7, and the air inlet P of the supporting leg button 5 is communicated with the trailer air bag 2, the execution port A of the supporting leg button 5 is communicated with the air inlet P of the air control valve 7, and the air outlet T of the supporting leg button 5 is communicated with the atmosphere. Under normal circumstances, the supporting leg button 5 is in a state where the air inlet P is communicated with the execution port A. The air control reversing valve 8 is arranged on the air passage from the execution port A of the traction pin button 3 to the rodless cavity of the traction pin cylinder 4, and the second air inlet P2 of the air control reversing valve 8 is communicated with the execution port A of the traction pin button 3, the first air inlet P1 of the air control reversing valve 8 is communicated with the tractor air bag 1, the execution port A of the air control reversing valve 8 is communicated with the rodless cavity of the traction pin cylinder 4, and the air control port K of the air control reversing valve 8 is communicated with the execution port A of the supporting leg button 5. When no pressurized gas is passed into the air control port K of the air-controlled reversing valve 8, the first air inlet P1 of the air-controlled reversing valve 8 is connected to the execution port A. When pressurized gas is passed into the air control port K of the air-controlled reversing valve 8, the second air inlet P2 of the air-controlled reversing valve 8 is connected to the execution port A.

[0031] The working principle of the traction pin and support leg control device of the mining cage vehicle of this embodiment is briefly described as follows:

[0032] See also Figure 3 The air passage between the execution port A of the traction pin button 3 and the control port K of the air control valve 7 is composed of the connecting air pipe 9. The following describes the two states of the connecting air pipe 9 being not broken and the connecting air pipe 9 being broken.

[0033] When the trailer is towed into the tank cage by a ground tractor, and the connecting air pipe 9 constituting the air passage from the execution port A of the traction pin button 3 to the control port K of the air control valve 7 is not broken, the traction pin button 3 is operated to make the execution port A of the traction pin button 3 communicate with the air outlet T. Under normal circumstances, the supporting leg button 5 is in a state where the air inlet P is communicated with the execution port A. Therefore, when pressurized gas is introduced into the air control port K of the air control reversing valve 8, the second air inlet P2 of the air control reversing valve 8 is communicated with the execution port A, and the pressurized gas in the rodless chamber of the traction pin cylinder 4 is discharged into the atmosphere through the second air inlet P2 of the air control reversing valve 8 and then through the air outlet T of the traction pin button 3, the piston rod of the traction pin cylinder 4 retracts, and the traction pin is disengaged. At the same time, since the air control port K of the air control valve 7 does not have pressurized gas, the air inlet P of the air control valve 7 is connected to the execution port A. Under normal circumstances, the support leg button 5 is in a state where the air inlet P is connected to the execution port A, so the pressurized gas in the trailer air bag 2 passes through the support leg button 5 and then through the air control valve 7 to reach the rodless chamber of the support leg cylinder 6, the piston rod of the support leg cylinder 6 extends, and the support leg is supported on the ground of the cage. When the trailer is transported to the underground through the cage, the traction pin button 3 is operated to make the air inlet P of the traction pin button 3 communicate with the execution port A, the piston rod of the traction pin cylinder 4 extends, the traction pin is in the connected state, and at the same time, the air control port K of the air control valve 7 is passed with pressurized gas, the execution port A of the air control valve 7 is connected to the gas outlet T, the pressurized gas in the rodless chamber of the support leg cylinder 6 is discharged to the atmosphere through the gas outlet T of the air control valve 7, the piston rod of the support leg cylinder 6 retracts, and the support leg automatically leaves the ground.

[0034] When the trailer is transported from the tank cage to the underground, if the connecting air pipe 9 constituting the air passage from the execution port A of the traction pin button 3 to the control port K of the air control valve 7 is broken, then operating the traction pin button 3 as mentioned above cannot realize the automatic connection of the traction pin and the automatic retraction of the support leg. Specifically: operate the traction pin button 3 to make the air inlet P of the traction pin button 3 communicate with the execution port A, the pressurized gas at the execution port A of the traction pin button 3 will be discharged into the atmosphere through the broken connecting air pipe 9, the rodless chamber of the traction pin cylinder 4 cannot pass into the pressurized gas, the piston rod of the traction pin cylinder 4 cannot be extended, the traction pin cannot be in the connected state, and at the same time, the air control port K of the air control valve 7 cannot pass into the pressurized gas, the air inlet P of the air control valve 7 is communicated with the execution port A, the pressurized gas in the rodless chamber of the support leg cylinder 6 cannot be discharged into the atmosphere, the piston rod of the support leg cylinder 6 cannot be retracted, and the support leg cannot leave the ground. However, at this time, the supporting leg button 5 can be operated to make the execution port A of the supporting leg button 5 communicate with the air outlet T. At this time, the air control port K of the air control reversing valve 8 does not pass the pressurized gas, and the first air inlet P1 of the air control reversing valve 8 is communicated with the execution port A. The pressurized gas in the tractor air bag 1 reaches the rodless chamber of the traction pin cylinder 4 through the first air inlet P1 of the air control reversing valve 8, and the piston rod of the traction pin cylinder 4 extends, and the traction pin is in a connected state. At the same time, the pressurized gas at the air control port K of the air control valve 7 will be discharged into the atmosphere through the broken connecting air pipe 9, and the air control port K of the air control valve 7 will no longer pass the pressurized gas. The air inlet P of the air control valve 7 is in a state of communication with the execution port A. Since the execution port A of the supporting leg button 5 is communicated with the air outlet T at this time, the pressurized gas in the rodless chamber of the supporting leg cylinder 6 is discharged into the atmosphere through the air control valve 7 and then through the supporting leg button 5, and the piston rod of the supporting leg cylinder 6 is retracted, and the supporting leg leaves the ground and is retracted.

[0035] As can be seen from the foregoing, the traction pin and support leg control device of the mining cage vehicle of this embodiment, which is additionally provided with the support leg button 5 and the air-controlled reversing valve 8, can not only realize that the support leg is automatically supported on the cage ground when the traction pin is disengaged and that the support leg automatically leaves the ground when the traction pin is connected, but also, when the trailer is transported from the cage to the underground, if the connecting air pipe 9 between the execution port A of the traction pin button 3 and the control port K of the air-controlled valve 7 is broken, the support leg can still be automatically left the ground when the traction pin is connected between the underground tractor and the trailer. Therefore, the working reliability of the control device of this embodiment is further improved compared with that of the embodiment 1.

[0036] The above embodiments are descriptions of specific implementation methods of the present invention rather than limitations of the present invention. Technical personnel in the relevant technical field can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

1. A traction pin and support leg control device for a mining tank cage truck, comprising a traction vehicle air bag, a trailer air bag, a traction pin button, a traction pin cylinder and a support leg cylinder, wherein the cylinder body of the traction pin cylinder is connected to the traction seat of the mining tank cage truck, the piston rod of the traction pin cylinder is connected to the swing arm of the mining tank cage truck, the cylinder body of the support leg cylinder is connected to the frame of the trailer of the mining tank cage truck, the piston rod of the support leg cylinder is connected to the support leg of the trailer, the traction pin button has an air inlet P, an execution port A and an air outlet T, and is characterized in that: It also includes an air control valve, the air control valve having an air inlet P, an execution port A, an air outlet T and an air control port K, the air inlet P of the traction pin button is connected to the tractor air bag, the execution port A of the traction pin button is respectively connected to the rodless cavity of the traction pin cylinder and the control port K of the air control valve, the air inlet P of the air control valve is connected to the trailer air bag, the execution port A of the air control valve is connected to the rodless cavity of the support leg cylinder, and the air outlets T of the traction pin button and the air control valve are both connected to the atmosphere; It also includes a supporting leg button and an air-controlled reversing valve, the supporting leg button having an air inlet P, an execution port A and an air outlet T, the air-controlled reversing valve having a first air inlet P1, a second air inlet P2, an execution port A and an air control port K; the supporting leg button is installed on the trailer, and the air inlet P and the execution port A of the supporting leg button are respectively connected with the trailer air bag and the air inlet P of the air-controlled valve, and the air outlet T of the supporting leg button is connected with the atmosphere; the air-controlled reversing valve is arranged on the air passage from the execution port A of the traction pin button to the rodless chamber of the traction pin cylinder, and the second air inlet P2 of the air-controlled reversing valve is connected with the execution port A of the traction pin button, the first air inlet P1 of the air-controlled reversing valve is connected with the tractor air bag, the execution port A of the air-controlled reversing valve is connected with the rodless chamber of the traction pin cylinder, and the air control port K of the air-controlled reversing valve is connected with the execution port A of the supporting leg button; the execution port A of the traction pin button is connected with the control port K of the air-controlled valve through a provided connecting air pipe; When it is necessary to disengage the traction pin and lower the support leg, operate the traction pin button to connect the execution port A of the traction pin button with the air outlet T, and the pressurized gas in the rodless chamber of the traction pin cylinder is discharged to the atmosphere through the traction pin button, the piston rod of the traction pin cylinder is retracted, and the traction pin is disengaged; the air inlet P of the air control valve is connected with the execution port A, and the pressurized gas in the trailer air bag reaches the rodless chamber of the support leg cylinder through the air inlet P of the air control valve, and the piston rod of the support leg cylinder is extended; When it is necessary to connect the traction pin and retract the supporting leg, operate the traction pin button to connect the air inlet P of the traction pin button with the execution port A, and the pressurized gas in the traction vehicle air bag reaches the rodless chamber of the traction pin cylinder through the traction pin button, and the piston rod of the traction pin cylinder extends; the execution port A of the air control valve is connected with the air outlet T, and the pressurized gas in the rodless chamber of the supporting leg cylinder is discharged into the atmosphere through the air outlet T of the air control valve, and the piston rod of the supporting leg cylinder retracts.

2. The traction pin and support leg control device of a mining cage vehicle according to claim 1, characterized in that: The traction pin button is a button of model XQ230420.

3. The traction pin and support leg control device of a mining cage vehicle according to claim 1, characterized in that: The air control valve is a two-position three-way air control valve of model JQ231030.

4. The traction pin and support leg control device of a mining tank cage vehicle according to claim 1, characterized in that: The supporting leg button is a button of model XQ230422.

5. The traction pin and support leg control device of a mining cage vehicle according to claim 1, characterized in that: The air-controlled reversing valve is a JQ231530 air-controlled reversing valve.

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