Platform car operation walking trolley operation control system and platform car

Abstract

The utility model discloses a platform vehicle operation walking trolley operation control system. In-place detection switches connected with a controller are arranged at the front end position, the operation position and the rear end position of an auxiliary frame respectively. A shaft plugging and unplugging device is arranged at the bottom of the walking trolley, plugging and unplugging bases corresponding to the shaft plugging and unplugging device are arranged at the front end position, the operation position and the rear end position of the auxiliary frame respectively, and an unplugging detection switch is arranged at the position, corresponding to the retraction height position of the shaft plugging and unplugging device, of the walking trolley. And an insertion detection switch is arranged at the bottom of the plugging base corresponding to the insertion depth position of the plugging shaft device. The in-place sensors are arranged on the auxiliary frame corresponding to the front end position, the operation position and the rear end position and connected with the controller, in-place information of the trolley can be accurately recognized, and the trolley is controlled to stop; meanwhile, a pull-out detection switch and an insertion detection switch of the insertion shaft are arranged, so that whether the walking trolley is accurately inserted and fixed or not is accurately judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to platform truck operation technical field especially is a kind of platform truck operation walking trolley operation control system and platform truck. BACKGROUND

[0002] End platform: a platform that can be temporarily used as a moving passage after unfolding, which can be folded and placed on the vehicle when not in use, with high mobility. In terms of structure, it can be unfolded in width direction, both side wings can be unfolded, and it can also be unfolded in front-back direction, expanding its length and width to achieve maximum support range.

[0003] Platform truck: a vehicle with the ability to build a platform. It is mainly used to build a vehicle passage for a train, so that the equipment transported on the train can be smoothly unloaded, and it can also be used in other situations that require temporary construction of a moving passage. Its operation part generally includes support legs, auxiliary frames, walking trolleys, rotating tables, lifting devices, special lifting devices, end platforms, etc. When operating, the support legs are first unfolded to provide stable support. The rotating table and lifting device are arranged on the walking trolley. The walking trolley moves forward and backward on the auxiliary frame to reach the predetermined operating position, and the walking trolley is locked. The lifting device places the end platform at the designated position through the special lifting device to realize the unfolding action of the end platform. When recovering, the two sides and the front and back of the end platform are retracted and placed on the platform truck.

[0004] At present, the operating part of the platform truck is a lifting device that lifts the end platform through a special lifting device. Unlike conventional cranes, the rotating table of the platform truck is fixed on the walking trolley, and the walking trolley can move forward and backward along the auxiliary frame, greatly expanding the operating range of the platform truck. At the operating position and the vehicle recovery position, the walking trolley needs to be rigidly connected to the auxiliary frame through the plug-in shaft device to ensure the lifting performance of the system and the safety and stability of the operation. The existing platform truck is not very perfect in the control of the walking trolley, and relies too much on the professional skills of the operator. SUMMARY

[0005] The utility model aims at overcoming the defects of the background art, and the first object of the utility model is to disclose a platform truck operation walking trolley operation control system.

[0006] The second object is to disclose a platform truck using the above control system.

[0007] Technical scheme: the platform truck operation walking trolley operation control system disclosed by the utility model, the walking trolley is controlled to walk on the auxiliary frame through the controller.

[0008] The auxiliary frame is provided with a position detection switch connected with the controller at the front end position, the operating position and the rear end position, respectively, to transmit the position information of the walking trolley to the controller.

[0009] The bottom of the walking trolley is provided with a plug-in shaft device connected with the controller, the telescopic shaft end is provided with a detection block, the auxiliary frame is provided with a plug-in base corresponding to the plug-in shaft device at the front end position, the working position and the rear end position, the retracting height position of the plug-in shaft device on the walking trolley is provided with a pulling-out detection switch, the plug-in depth position of the plug-in base corresponding to the plug-in shaft device is provided with an insertion detection switch, and the pulling-out detection switch and the insertion detection switch are connected with the controller.

[0010] Further, the in-place detection switch, the pulling-out detection switch and the insertion detection switch are all connected with indicator lamps.

[0011] Further, the normally open contact and the normally closed contact of the in-place detection switch, the insertion detection switch and the pulling-out detection switch are simultaneously connected with the controller.

[0012] Further, the auxiliary frame is provided with a length sensor for measuring the displacement distance of the walking trolley and connected with the controller, and the pull wire end of the length sensor is telescopic with the walking trolley.

[0013] Further, the plug-in shaft device is driven by a hydraulic oil cylinder, and an oil pressure sensor is arranged, and the oil pressure sensor is connected with the controller.

[0014] Further, the front end position, the working position and the rear end position of the walking trolley and the auxiliary frame are respectively provided with external position marking lines.

[0015] Further, the auxiliary frame is provided with a chain, the walking trolley is connected with the chain, the chain is connected with a hydraulic motor, and the outer gear of the hydraulic motor drives the chain transmission.

[0016] Correspondingly, a platform trolley is also disclosed, which comprises the above-mentioned platform trolley operation walking trolley operation control system.

[0017] Advantages: compared with the prior art, the advantages of the utility model are:

[0018] The in-place sensor is arranged on the auxiliary frame corresponding to the front end position, the working position and the rear end position, and is connected with the controller, so that the trolley in-place information can be accurately recognized and controlled to stop; the pulling-out detection switch and the insertion detection switch of the plug-in shaft are arranged, so that whether the walking trolley is accurately inserted and fixed can be accurately judged;

[0019] The length sensor is arranged on the walking trolley, so that the stroke condition of the trolley can be understood in real time, the trolley can be slowed down in advance when reaching the set position, and the trolley can be accurately stopped in time when reaching the position; the oil pressure sensor is arranged on the plug-in shaft control oil cylinder, so that the situation that the plug-in shaft is mispositioned and extended to the top of the auxiliary frame can be recognized in time. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a whole top view of the utility model;

[0021] Fig. 2 is an internal device diagram of the walking trolley and the auxiliary frame of the utility model;

[0022] Fig. 3 is a schematic diagram of the plug-in shaft device, the pulling-out detection switch and the plug-in detection switch of the utility model. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be further explained in combination with the drawings and embodiments.

[0024] A platform trolley adopts the following platform trolley operation walking trolley running control system, as shown in the figure. Figs. 1-3

[0025] The walking trolley 1 is controlled to walk on the auxiliary frame 2 through the controller, the auxiliary frame 2 is provided with a chain, the walking trolley 1 is connected with the chain, the chain is connected with a hydraulic motor, the hydraulic motor drives the chain transmission through the external gear, and then the walking trolley is realized to move forward and backward. The walking trolley 1 moving speed can be adjusted by controlling the hydraulic output ratio.

[0026] The auxiliary frame 2 is provided with a to-position detection switch 201 connected with the controller at the front end position, the operation position and the rear end position, the to-position information of the walking trolley 1 is transmitted to the controller, meanwhile, the auxiliary frame 2 is provided with a length sensor 102 measuring the displacement distance of the walking trolley 1 and connected with the controller, the pull line end of the length sensor 102 is stretched and retracted with the walking trolley, and the length sensor 102 can also adopt any sensor with distance measuring function in the prior art.

[0027] When the walking trolley 1 approaches the preset parking position, the trolley is controlled to slow down by the controller, so as to prevent overstroke and damage the walking trolley, and the driving is immediately stopped when the to-position detection switch 201 is triggered. The front end position, the operation position and the rear end position of the walking trolley 1 and the auxiliary frame 2 are respectively provided with external position marking lines. After the walking trolley 1 stops, whether the walking trolley operation position line coincides is observed at this time, if not, the walking trolley can be fine-tuned, and if yes, the plug-in lock dead action is performed.

[0028] ​The bottom of the walking trolley 1 is provided with a plug-in shaft device 101 connected with the controller, the telescopic shaft end of which is provided with a detection block, the auxiliary frame 2 is provided with a plug-in base 202 corresponding to the plug-in shaft device 101 at the front end position, the working position and the rear end position, respectively, the retracted height position of the plug-in shaft device 101 on the walking trolley 1 is provided with a pull-out detection switch 203, the bottom of the plug-in base 202 is provided with an insertion detection switch 204 corresponding to the insertion depth position of the plug-in shaft device 101, and the pull-out detection switch 203 and the insertion detection switch 204 can adopt a travel switch. The pull-out detection switch 203 and the insertion detection switch 204 are connected with the controller, and whether the walking trolley 1 is locked can be accurately identified.

[0029] The plug-in shaft device 101 is driven by a hydraulic oil cylinder, and an oil pressure sensor 103 is arranged, the oil pressure sensor 103 is connected with the controller, and is used to detect the pressure of the plug-in shaft hydraulic system of the walking trolley hydraulic system, and to alarm when a fault occurs. When the oil pressure sensor overflows, it indicates that the plug-in shaft position is not correct and is pressed against the base of the plug-in shaft instead of the inside of the locking hole, at which time a fault is reminded.

[0030] The normally open contact and the normally closed contact of the in-place detection switch 201, the insertion detection switch 204 and the pull-out detection switch 203 are connected with the controller at the same time, redundant control is realized, and mutual verification is realized.

[0031] Since each detection switch and sensor is arranged at a position shielded by the walking trolley 1 and the auxiliary frame 2, it is inconvenient to observe, the in-place detection switch 201, the pull-out detection switch 203 and the insertion detection switch 204 are all connected with indicator lamps, so that the operator can observe the running condition of the device.

Claims

1. A running control system of a platform truck operation walking trolley, the walking trolley (1) is controlled to walk on a sub-frame (2) by a controller, characterized in that: the sub-frame (2) is provided with a position detection switch (201) connected with the controller at a front end position, an operation position and a rear end position respectively, and the position information of the walking trolley (1) is transmitted to the controller; the bottom of the walking trolley (1) is provided with a plug-in shaft device (101) connected with the controller, the telescopic shaft end of which is provided with a detection block, the sub-frame (2) is provided with a plug-in base (202) corresponding to the plug-in shaft device (101) at the front end position, the operation position and the rear end position respectively, the retracted height position of the plug-in shaft device (101) on the walking trolley (1) is provided with a pull-out detection switch (203), and the bottom of the plug-in base (202) is provided with an insertion detection switch (204) corresponding to the insertion depth position of the plug-in shaft device (101), the pull-out detection switch (203) and the insertion detection switch (204) are connected with the controller. The position detection switch (201), the pull-out detection switch (203) and the insertion detection switch (204) are all connected with indicator lights. The normally open contact and the normally closed contact of the position detection switch (201), the insertion detection switch (204) and the pull-out detection switch (203) are simultaneously connected with the controller.

2. The platform truck operation control system of claim 1, wherein: The sub-frame (2) is provided with a length sensor (102) measuring the displacement distance of the walking trolley (1) and connected with the controller, and the pull line end of the length sensor (102) is telescopic with the walking trolley.

3. The platform truck operation control system of claim 1, wherein: The plug-in shaft device (101) is driven by a hydraulic oil cylinder, and an oil pressure sensor (103) is arranged, and the oil pressure sensor (103) is connected with the controller.

4. The platform truck operation control system of claim 1, wherein: The front end position, the operation position and the rear end position of the walking trolley (1) and the sub-frame (2) are respectively provided with external position identification lines.

5. The platform truck operation control system of claim 1, wherein: The sub-frame (2) is provided with a chain, the walking trolley (1) is connected with the chain, the chain is connected with a hydraulic motor, and the outer gear of the hydraulic motor drives the chain transmission.

6. The platform truck operation control system of claim 1, wherein: The running control system of the platform truck operation walking trolley comprises the running control system of the platform truck operation walking trolley according to any one of claims 1-5.

7. The platform truck operation control system of claim 1, wherein: ​ 8. A platform truck characterized by: ​

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