CN111562120B - Self-adaptive adjusting method for truck brake table and roller brake table for detection - Google Patents
Self-adaptive adjusting method for truck brake table and roller brake table for detection Download PDFInfo
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- CN111562120B CN111562120B CN202010679548.9A CN202010679548A CN111562120B CN 111562120 B CN111562120 B CN 111562120B CN 202010679548 A CN202010679548 A CN 202010679548A CN 111562120 B CN111562120 B CN 111562120B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The invention relates to the field of vehicle detection devices, and particularly discloses a self-adaptive adjusting method for a truck brake platform and a roller brake platform for detection, which comprises the following steps of; s1, presetting programs according to different vehicle types to determine the position of the roller unit on the roller braking platform required by the corresponding vehicle type; s2, selecting a preset program by the subsystem according to the vehicle type and transmitting a signal to the subsystem II; s3, adjusting the position of the roller unit by the subsystem according to the unified signal of the subsystem; s4, when detecting that the corresponding limit switch is triggered, the subsystem III transmits a signal to the system II to power off the corresponding electromagnet; s5, detecting electric signals of the electromagnet, the electromagnetic clutch and the limit switch in real time by the coupling system, and judging whether the roller unit is in place or not; and S6, placing the vehicle on a brake table for detection, and obtaining detected data. The invention has the advantages that the position of the roller unit can be changed to adapt to different vehicle types, and the adaptability of the device is improved.
Description
Technical Field
The invention relates to the field of vehicle detection devices, in particular to a self-adaptive adjusting method for a truck brake platform and a roller brake platform for detection.
Background
According to the regulations of the Chinese road traffic safety law, cargo vehicles and large and medium-sized non-commercial passenger vehicles are tested for 1 time per year within 10 years, more than 10 years and 1 time per 6 months, so that the braking force of the vehicles needs to be detected at regular time in order to avoid traffic accidents caused by the conditions of the vehicles, a device for detecting the braking performance and the conditions of wheels of the vehicles needs to be used by a braking table during the test, rollers of the conventional roller detection table are limited and fixedly arranged, and the braking table needs to be used to adapt to different vehicle types due to different wheel distributions and wheel intervals of different vehicle types, so that the aim of detecting various vehicle types by one braking table is fulfilled, the conventional braking table cannot be suitable for detecting various vehicle types, a plurality of devices are needed for detection, and resources are wasted.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a truck braking detection method and a roller braking platform for detection, which can meet the use requirements of different truck types by changing the position of a roller unit.
The purpose of the invention is realized by the following technical scheme: a self-adaptive regulation method for a truck brake platform comprises the following steps;
s1, a control system is arranged on the brake platform and comprises a subsystem I, a subsystem II, a subsystem III and a coupling system, wherein the subsystem I records wheel information of vehicles of different vehicle types, the wheel information comprises the number of rows of the wheels of the vehicles and the wheel base between adjacent wheels, and then a program is preset according to different vehicle types to determine the position of a roller unit on the roller brake platform, which is required by the corresponding vehicle type;
s2, the detector selects the corresponding vehicle model recorded in the subsystem according to the vehicle model to be detected, and the subsystem collects the selected signal and transmits the vehicle information of the corresponding vehicle model to the subsystem II;
s3, the two subsystems adjust the position of the roller unit according to the signal input by the two subsystems, the two subsystems control the electromagnetic clutch to be electrified during adjustment, so that the driven shaft is connected with the screw rod, then the driving motor drives the driven shaft to drive the screw rod to rotate, simultaneously the second subsystem energizes an electromagnet arranged on the roller unit to be adjusted, the electromagnet drives the pull rod to rotate around a hinged point with the mounting plate after being energized, so that the brake piston is pressed into the piston cylinder, thereby driving hydraulic oil is pressed into the clasping mechanism through the oil pipe, two pistons in the driving clasping mechanism are driven oppositely under the action of the driving hydraulic oil and lock a disc positioned between the two pistons, at the moment, the circumferential rotation of the screw rod nut is limited, the screw rod rotates to drive the roller unit to slide along the guide rail, and the roller unit triggers a limit switch arranged on the guide rail when moving along the guide rail;
s4, detecting an electric signal of a limit switch in real time by a subsystem III, feeding back a signal to a subsystem II when the subsystem III detects that the limit switch corresponding to the position to which the roller unit needs to move is triggered, controlling the electromagnet arranged on the roller unit to be powered off by the subsystem II, resetting the pull rod under the action of a reset spring after the electromagnet is powered off, driving a brake piston to reset by the pull rod, extracting driving hydraulic oil in a holding mechanism when the brake piston resets, further reversely moving two pistons in the holding mechanism to loosen a disc, and then locking a caliper arranged corresponding to a slide block on the roller unit after the roller unit moves in place to fix the position of the roller unit;
s5, detecting electric signals of the electromagnet, the electromagnetic clutch and the limit switch in real time by the coupling system, judging whether all required roller units are in place or not according to the vehicle models input by the subsystems in a unified manner, and completing the adjustment of the brake platform when all required roller units move in place;
and S6, driving the vehicle to the brake platform for detection, and obtaining the detected data.
A roller braking platform for truck braking detection comprises a plurality of roller units and guide rails, wherein the two guide rails are arranged in parallel, the roller units are in sliding fit with the two guide rails, a roller unit can move on the guide rails along the guide rails, the guide rails are provided with a plurality of limit switches, and the roller units can trigger the limit switches when sliding along the guide rails;
the roller unit comprises a base, a plurality of supporting beams are arranged on the base in parallel, two groups of roller sets are arranged on the base, each group of roller set comprises two rollers arranged in parallel, rotating shafts are arranged at two ends of each roller, bearing seats are arranged on the supporting beams, the rotating shafts at two ends of each roller are matched and connected with bearings in the bearing seats, so that the rollers rotate on the base around the bearing seats, wherein the rollers of the two groups of roller sets are respectively arranged coaxially and correspondingly and are connected through a coupler; the rotating shafts of the rollers in one roller group, which are far away from one end of the other roller group, are provided with synchronous belt pulleys;
the guide rail is arranged on the frame, the head end of the frame is provided with a driving motor, the output end of the driving motor is connected with a driving shaft, a driving synchronous belt pulley is arranged on the driving shaft, the tail end of the frame is provided with a driven synchronous belt pulley, the driving synchronous belt pulley is in transmission connection with the driven synchronous belt pulley through a synchronous belt, the driven synchronous belt pulley, the driving synchronous belt pulley and synchronous belt pulleys on the rollers of the roller units are in a straight line, and the synchronous belt pulleys on the rollers are in transmission connection with the driving synchronous belt pulley through the synchronous belt;
the driving shaft is also provided with a first driving bevel gear, the first driving bevel gear is meshed with a first driven bevel gear, the first driven bevel gear is arranged at one end of the driving shaft, the other end of the driving shaft is provided with a second driving bevel gear, the second driving bevel gear is meshed with a second driven bevel gear, the second driven bevel gear is connected to one end of a driven shaft, the other end of the driven shaft is connected with the input end of a speed reducer, the driven shaft is connected with the input end of the speed reducer through an electromagnetic clutch, the output end of the speed reducer is connected with a screw rod, and the other end of the screw rod is rotatably connected with the frame; the screw rod is arranged in parallel with the guide rail;
the lead screw on screw thread transmission be connected with a plurality of screw-nut, screw-nut's number corresponds with the number of cylinder unit, the bottom of base be provided with and hold tight mechanism, screw-nut's external fixation be provided with the video disc, hold tight mechanism and be used for locking the video disc, make the video disc lead screw drive screw-nut when locking state remove along the lead screw to drive cylinder unit and remove on the guide rail, thereby adjust its position.
Specifically, the clasping mechanism comprises a piston shell, a flange is arranged on the piston shell, the piston shell is installed at the bottom of the base through the flange, two piston cylinders are arranged in the piston shell, the two piston cylinders are arranged oppositely and coaxially, and pistons are arranged in the two piston cylinders;
friction gaskets are arranged on the end faces of the two opposite ends of the two pistons, a gap exists between the two friction gaskets, and the disc is partially arranged between the two friction gaskets;
the piston shell is internally provided with an oil duct communicated with the two piston cylinders, the piston shell is provided with an interface, the interface is communicated with the oil duct, the interface is connected with an oil pipe, and the other end of the oil pipe is connected with a driving mechanism.
The driving mechanism comprises a mounting plate fixed at the bottom of the base, a piston cylinder is arranged on the mounting plate, one end of the oil pipe is communicated with the piston cylinder, a brake piston is arranged in the piston cylinder, a connecting rod is hinged to the brake piston, the other end of the connecting rod is hinged to a pull rod, one end of the pull rod is hinged to the mounting plate, and the connecting rod is hinged to one end, close to the hinged point of the pull rod and the mounting plate, of the pull rod;
a pull rope is connected to one end, far away from the hinged point of the pull rod and the mounting plate, of the pull rod, an electromagnet is arranged on the mounting plate, the output end of the electromagnet is connected with the pull rope, the output end of the electromagnet pulls the pull rope when the electromagnet is powered on, the pull rod is pulled by the pull rope to rotate around the hinged point of the pull rod and the mounting plate, and then the brake piston is pressed into the piston cylinder through the connecting rod;
and the piston cylinder, the oil duct, the oil pipe and the piston cylinder are filled with driving hydraulic oil.
Specifically, the mounting panel on be provided with an curved spout, the pull rod on be provided with the sliding block, the sliding block slide and set up in the spout, and be provided with reset spring in the spout, reset spring's one end is fixed on the lateral wall of spout, its other end and sliding block fixed connection.
Specifically, the guide rail is a linear circular guide rail, the centers of two ends of the bottom of the base are respectively provided with a sliding block, the sliding blocks and the guide rail are arranged in a sliding fit manner, the sliding blocks are provided with a clamp used for locking the sliding blocks on the guide rail, and the sliding blocks can trigger a limit switch when sliding along the guide rail;
the axis at the center of the bottom of the sliding block is provided with a trigger block for triggering the limit switch, and the bottom of the trigger block is arc-shaped.
Specifically, the base is provided with baffles around, openings are formed in the baffles on two sides of the roller group provided with the synchronous belt wheel, and the synchronous belt penetrates through the openings.
Specifically, the base on be provided with overspeed device tensioner for tensioning hold-in range.
Specifically, the transmission shaft is rotatably arranged on the frame.
The system comprises a subsystem I, a subsystem II, a subsystem III and a coupling system, wherein the subsystem I inputs information of each vehicle type and sets position information of a limit switch of each vehicle type requiring a roller unit position, and the vehicle information comprises a wheel base between adjacent wheels of the vehicle; the limit switches are combined to form wheel position information of a corresponding vehicle type according to the wheel base relationship among the wheels; the vehicle information comprises the wheel base between the adjacent wheels of the vehicle; the limit switches are combined according to the wheel base relationship and matched with the wheel position information of the corresponding vehicle type
The subsystem reads the vehicle type information which is uniformly recorded by the selected subsystem to control the corresponding driving mechanism and the electromagnetic clutch to work, the driven shaft drives the screw rod to rotate after the electromagnetic clutch is electrified, the electromagnet in the driving mechanism is electrified to enable the holding mechanism to hold the disc tightly, and then the screw rod drives the roller unit to trigger the corresponding limit switch to move to the corresponding position;
the subsystem II selects corresponding roller units according to the vehicle type to be combined to be matched with the corresponding vehicle type, controls the moving sequence of the plurality of roller units to reach corresponding positions, and adjusts the moving sequence of the corresponding roller units of the next vehicle type to be detected according to the position of each roller unit before moving, so that the roller units which are not needed to be used are positioned at idle positions and do not conflict with the positions of the roller units required by the next vehicle type;
the subsystem III detects the electric signals of the limit switches in real time, and judges whether all the roller units required to be used of the required vehicle type move in place according to the vehicle type uniformly recorded by the subsystem III;
the coupling system detects the electric signal sequence of the clasping mechanism, the electromagnetic clutch and the limit switch in real time to control the subsystem I, the subsystem II and the subsystem III and the mutual coupling relation thereof.
The invention has the following advantages:
1. according to the invention, all the rollers are driven to rotate by one driving motor through the synchronous belt, so that the synchronous rotation of the rollers is improved, and the use of the motor is reduced.
2. According to the invention, the plurality of roller units are arranged on the guide rail, and the roller units can move on the guide rail along the guide rail, so that the positions of the roller units can be adjusted according to different vehicle types to adapt to different vehicle types, and the detection of various vehicle types is met.
3. According to the invention, the screw rod is arranged at the bottom of the roller unit, the screw rod nut is arranged on the screw rod corresponding to each roller unit, and the roller unit can be driven to adjust the position by rotating the screw rod so as to meet the requirements of different vehicle types.
4. According to the invention, the clamping mechanism is arranged at the bottom of the base of the roller unit, and when the position of the roller unit needs to be adjusted, the clamping mechanism works to clamp the disc tightly so as to limit the turnover of the screw rod nut, so that the corresponding roller unit can be pushed to slide along the guide rail when the screw rod rotates, and the clamping mechanism releases the disc when the roller unit does not move, so that the screw rod nut can rotate in the circumferential direction at the original position under the rotation of the screw rod after losing the axial rotation limitation.
5. The clasping mechanism adopts a hydraulic driving mode to drive the piston to clamp the disc, and can electrify the electromagnet when in use, so that hydraulic oil can be pressed into a piston cylinder of the piston shell under the pulling of the electromagnet to drive the piston, and the automatic control can be realized by adopting the structure.
Drawings
FIG. 1 is a schematic control flow diagram of the apparatus of the present invention;
FIG. 2 is a schematic view of the braking table of the present invention;
FIG. 3 is a schematic view of a pushing structure of the roller unit according to the present invention;
FIG. 4 is a schematic top view of the roller unit of the present invention;
FIG. 5 is a schematic side view of the roller unit of the present invention;
FIG. 6 is a schematic view of the mounting structure of the limit switch and the guide rail of the present invention;
FIG. 7 is a schematic view of the piston housing construction of the invention;
FIG. 8 is a schematic view of a disc clasping structure of the present invention;
FIG. 9 is a schematic view of the drive mechanism of the present invention;
in the figure: 1-roller unit, 101-base, 102-roller, 103-support beam, 104-shaft, 105-synchronous pulley, 106-baffle, 107-coupling, 108-bearing seat, 109-opening, 2-frame, 3-guide, 4-drive motor, 5-drive shaft, 6-drive synchronous pulley, 7-driven synchronous pulley, 8-synchronous belt, 9-first drive bevel gear, 10-first driven bevel gear, 11-drive shaft, 12-second drive bevel gear, 13-second driven bevel gear, 14-electromagnetic clutch, 15-reducer, 16-screw, 17-screw nut, 18-clasping mechanism, 181-piston housing, 182-piston cylinder, 183-piston, 184-friction pad, 185-oil channel, 186-interface, 187-flange, 19-disc, 20-oil pipe, 21-driving mechanism, 211-mounting plate, 212-piston cylinder, 213-brake piston, 214-connecting rod, 215-pull rod, 216-pull rope, 217-electromagnet, 22-slide block, 23-limit switch and 24-trigger block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1 to 9, a self-adaptive regulation method for a truck brake platform comprises the following steps;
s1, a control system is arranged on the brake platform and comprises a subsystem I, a subsystem II, a subsystem III and a coupling system, wherein the subsystem I records wheel information of vehicles of different vehicle types, the wheel information comprises the number of rows of the wheels of the vehicles and the wheel base between adjacent wheels, and then a program is preset according to different vehicle types to determine the position of a roller unit on the roller brake platform, which is required by the corresponding vehicle type;
s2, the detector selects the corresponding vehicle model recorded in the subsystem according to the vehicle model to be detected, and the subsystem collects the selected signal and transmits the vehicle information of the corresponding vehicle model to the subsystem II;
s3, the two subsystems adjust the position of the roller unit according to the signal input by the two subsystems, the two subsystems control the electromagnetic clutch to be electrified during adjustment, so that the driven shaft is connected with the screw rod, then the driving motor drives the driven shaft to drive the screw rod to rotate, simultaneously the second subsystem energizes an electromagnet arranged on the roller unit to be adjusted, the electromagnet drives the pull rod to rotate around a hinged point with the mounting plate after being energized, so that the brake piston is pressed into the piston cylinder, thereby driving hydraulic oil is pressed into the clasping mechanism through the oil pipe, two pistons in the driving clasping mechanism are driven oppositely under the action of the driving hydraulic oil and lock a disc positioned between the two pistons, at the moment, the circumferential rotation of the screw rod nut is limited, the screw rod rotates to drive the roller unit to slide along the guide rail, and the roller unit triggers a limit switch arranged on the guide rail when moving along the guide rail;
s4, detecting an electric signal of a limit switch in real time by a subsystem III, feeding back a signal to a subsystem II when the subsystem III detects that the limit switch corresponding to the position to which the roller unit needs to move is triggered, controlling the electromagnet arranged on the roller unit to be powered off by the subsystem II, resetting the pull rod under the action of a reset spring after the electromagnet is powered off, driving a brake piston to reset by the pull rod, extracting driving hydraulic oil in a holding mechanism when the brake piston resets, further reversely moving two pistons in the holding mechanism to loosen a disc, and then locking a caliper arranged corresponding to a slide block on the roller unit after the roller unit moves in place to fix the position of the roller unit;
s5, detecting electric signals of the electromagnet, the electromagnetic clutch and the limit switch in real time by the coupling system, judging whether all required roller units are in place or not according to the vehicle models input by the subsystems in a unified manner, and completing the adjustment of the brake platform when all required roller units move in place;
and S6, driving the vehicle to the brake platform for detection, and obtaining the detected data.
A roller braking platform for truck braking detection comprises a plurality of roller units 1 and guide rails 3, wherein the two guide rails 3 are arranged in parallel, the roller units 1 are in sliding fit with the two guide rails 3, and the roller units 1 can move on the guide rails 3 along the guide rails 3;
the roller unit comprises a base 101, a plurality of supporting beams 103 are arranged on the base 101 in parallel, two groups of roller sets are arranged on the base 101, each group of roller sets comprises two rollers 102 arranged in parallel, rotating shafts 104 are arranged at two ends of each roller 102, bearing seats 108 are arranged on the supporting beams 103, the rotating shafts 104 at two ends of each roller 102 are matched and connected with bearings in the bearing seats 108, so that the rollers 102 rotate on the base 101 around the bearing seats 108, wherein the rollers 102 of the two groups of roller sets are respectively arranged correspondingly and coaxially and are connected through couplings 107; the rotating shafts 104 of the rollers 102 in one roller group, which are far away from one end of the other roller group, are provided with synchronous belt pulleys 105;
the device also comprises a frame 2, the guide rail 3 is arranged on the frame 2, the head end of the frame 2 is provided with a driving motor 4, the driving motor 4 adopts a speed reducer, the device also comprises a detector, the detector is used for detecting the resistance borne by the rotating shaft of the driving motor 4, the braking force of the vehicle can be obtained by detecting the braking force of the speed reducer, the output end of the driving motor 4 is connected with a driving shaft 5, a driving synchronous belt wheel 6 is arranged on the driving shaft 5, a driven synchronous belt wheel 7 is arranged at the tail end of the frame 2, the driving synchronous pulley 6 is in transmission connection with the driven synchronous pulley 7 through a synchronous belt 8, and the driven synchronous pulley 7, the driving synchronous pulley 6 and the synchronous pulleys 105 on the rollers 102 of the plurality of roller units 1 are in a straight line, and the synchronous pulleys 105 on the roller 102 are in transmission connection with the driving synchronous pulley 6 through a synchronous belt 8;
the driving shaft 5 is further provided with a first driving bevel gear 9, the first driving bevel gear 9 is meshed with a first driven bevel gear 10, the first driven bevel gear 10 is arranged at one end of a transmission shaft 11, the other end of the transmission shaft 11 is provided with a second driving bevel gear 12, the second driving bevel gear 12 is meshed with a second driven bevel gear 13, the second driven bevel gear 13 is connected to one end of a driven shaft, the other end of the driven shaft is connected with an input end of a speed reducer 15, the driven shaft is connected with the input end of the speed reducer 15 through an electromagnetic clutch 14, an output end of the speed reducer 15 is connected with a screw rod 16, and the other end of the screw rod 16 is rotatably connected with the frame 2; the screw rod 16 is arranged in parallel with the guide rail 3;
the lead screw 16 on screw thread transmission be connected with a plurality of screw-nut 17, the number of screw-nut 17 corresponds with the number of cylinder unit 1, the bottom of base 101 be provided with and hold tight mechanism 18, screw-nut 17's external fixation be provided with video disc 19, hold tight mechanism 18 and be used for locking video disc 19, make video disc 19 when locking state lead screw 16 drive screw-nut 17 and remove along lead screw 16 to drive cylinder unit 1 and remove on guide rail 3, thereby adjust its position. When the large truck is subjected to annual inspection, the braking force of the truck needs to be checked, at the moment, a device is needed to realize the simulation of normal running of the large truck, a plurality of tires of the truck are all contacted with the ground when the truck runs, and a plurality of wheels of the truck keep synchronous rotation when the truck runs, so the used device needs to ensure that the wheels of the large truck keep synchronous rotation to simulate the running state more really, a plurality of roller units 1 are arranged in the scheme, the roller units 1 are used for driving the wheels to rotate, when the truck is used, the wheels are placed on rollers 102 of the roller units 1, each roller unit 1 is provided with two groups of roller sets which are arranged in parallel, each group of roller sets corresponds to the tire on one side of the same row of the truck, the tires on the same row are coaxially arranged, in order to ensure that the tires on the same row can be normally driven, the two groups of roller sets are symmetrically arranged, and the four rollers of the two groups of roller sets, in order to ensure that the rollers of the two roller groups can synchronously rotate and each wheel of the truck can synchronously rotate, the scheme adopts a driving motor 4 to drive all the rollers 102 to rotate, the arranged roller units 1 are in transmission connection with the driving motor 4, in order to improve the rotating synchronism, the scheme adopts a driving mode of synchronous wheels and synchronous belts to drive the rollers 102, compared with belt transmission, the synchronism of the synchronous belt transmission is better, the transmission efficiency is higher, it needs to be explained that the roller units 1 of the scheme are provided with a plurality of rollers which respectively correspond to each row of wheels, when in use, the number of the roller units 1 can be determined according to the detected number of rows of wheels of the truck, wherein, the number of the roller units 1 can be larger than the number of rows of wheels of the truck but can not be smaller than two, because the truck has at least two rows of wheels, the number can also be used when being larger than the number of rows of wheels of the truck, only the roller unit 1 which is excessive in use needs to idle, but the use is not influenced; on the basis, the number of rows of wheels of trucks of different vehicle types is different, and the distribution and the distance between the wheels are different, so that the position of the roller unit 1 can be adjusted to adapt to different vehicle types, in order to adapt to different vehicle types, the scheme is provided with an adjusting mechanism, a first driving bevel gear 9 and a first driven bevel gear 10 meshed with the first driving bevel gear 9 are arranged on a driving shaft 5, the driving direction of the driving shaft 5 is changed by the first driving bevel gear 9 to be vertical to the driving shaft 5, a transmission shaft 11 connected with the first driven bevel gear 10 is vertically arranged, the transmission direction is changed again by a second driving bevel gear 12 to be parallel to a guide rail 3, so that the driving roller unit 1 slides along the guide rail 3, and a second driven bevel gear 13 meshed with the second driving bevel gear 12 is connected with a driven shaft, the driven shaft is connected with the speed reducer 15 for speed reduction, the output end of the speed reducer 15 is connected with the screw rod 16 for driving the screw rod 16 to rotate, and the roller unit 1 can be stably pushed to slide along the guide rail 3 only by slow driving when the screw rod 16 is driven, so the speed reducer is needed; the lead screw 16 is provided with a plurality of lead screw nuts 17, each roller unit 1 is correspondingly provided with one lead screw nut 17, so that the lead screw can independently drive one roller unit 1 to slide when rotating, and meanwhile, the problem that when the adjustment is carried out, each roller unit 1 does not need to be adjusted, because the distribution and the adjacent distance of some wheels of some vehicle types are the same, the adjustment is only carried out on other roller units to adapt to the positions of other wheels, so that if the lead screw nuts 17 and the base are always fixed, all the roller units 1 of the lead screw 16 can slide when in transmission, and the aim of independent adjustment cannot be achieved, in order to solve the problem, the scheme is provided with a clamping mechanism 18 at the bottom of the base 101, and a disc 19 is arranged on the periphery of the lead screw nuts 17, when one roller unit 1 needs to be adjusted, the clasping mechanism 18 clasps the disc 19, so that the screw rod nut 17 is fixed with the base 101, and further the roller unit 1 can be driven by the screw rod 16 to slide on the guide rail 3 to reach a required position, and at the same time, the driving motor 4 drives the roller 102 in the roller unit 1 to rotate when the screw rod 16 is conveyed, and the condition required for simultaneously adjusting the position of the roller unit 1 during transmission of the roller 102 is that the sliding direction of the roller unit 1 is the same as the linear velocity of a point where the upper end of the synchronous pulley 105 is contacted with the synchronous belt 8, so that the roller unit 1 can slide when the synchronous pulley 105 rotates, and the motor needs to be reversed to meet the requirement when the roller unit 1 slides in the opposite direction; it should be noted that the thickness of the disc 19 needs to be thick enough to prevent it from being broken; the problem of synchronous rotation of the wheels of the trucks of different vehicle types can be realized through the scheme, 102 rotation of the roller can be realized by only adopting one motor, the position of the roller unit 1 can be adjusted, in order to stop the rotation of the screw 16 when the rotation of the screw 16 is not required, the scheme is connected between the driven shaft and the speed reducer 15 through an electromagnetic clutch 14, when the screw rod 16 is required to rotate to adjust the position of the roller unit 1, the electromagnetic clutch 14 is electrified, the driven shaft is connected with the input shaft of the speed reducer 15, the driven shaft can drive the speed reducer 15 to work, when the rotation of the screw 16 is not required, the electromagnetic clutch 14 is deenergized to disconnect the driven shaft from the input shaft of the reducer 15, therefore, the screw rod 16 stops rotating, so that the load of the driving motor 4 can be reduced when the driving motor 4 drives the wheels to rotate, and the service life of the driving motor 4 is prolonged. When in use, the roller 102 can be provided with a detection device to detect different items of the vehicle according to requirements.
As shown in fig. 7 to 9, the clasping mechanism 18 includes a piston housing 181, a flange 187 is disposed on the piston housing 181, the piston housing 181 is mounted at the bottom of the base 101 through the flange 187, two piston cylinders 182 are disposed in the piston housing 181, the two piston cylinders 182 are disposed oppositely and coaxially, a piston 183 is disposed in each of the two piston cylinders 182, friction washers 184 are disposed on end faces of opposite ends of the two pistons 183, a gap exists between the two friction washers 184, and a portion of the disc 19 is disposed between the two friction washers 184; an oil duct 185 communicated with the two piston cylinders 182 is further arranged in the piston shell 181, an interface 186 is arranged on the piston shell 181, the interface 186 is communicated with the oil duct 185, the interface 186 is connected with the oil pipe 20, the other end of the oil pipe 20 is connected with the driving mechanism 21, the driving mechanism 21 comprises a mounting plate 211 fixed at the bottom of the base 101, a piston cylinder 212 is arranged on the mounting plate 211, one end of the oil pipe 20 is communicated with the piston cylinder 212, a brake piston 213 is arranged in the piston cylinder 212, a connecting rod 214 is hinged on the brake piston 213, the other end of the connecting rod 214 is hinged on a pull rod 215, one end of the pull rod 215 is hinged on the mounting plate 211, the connecting rod 214 is hinged on one end of the pull rod 215 close to the hinged point of the pull rod 215 and the mounting plate 211, and one end of the pull rod 215 far away from the hinged point of the, an electromagnet 217 is arranged on the mounting plate 211, the output end of the electromagnet 217 is connected with a pull rope 216, the pull rope 216 is pulled by the output end of the electromagnet 217 when the electromagnet 217 is electrified, the pull rod 215 is pulled by the pull rope 216 to rotate around the hinged point of the pull rod 215 and the mounting plate 211, and then the brake piston 213 is pressed into the piston cylinder 212 through the connecting rod 214; and hydraulic oil is arranged in the piston cylinder 182, the oil passage 185, the oil pipe 20 and the piston cylinder 212. In order to achieve the purpose that the clasping mechanism 18 clasps the disc 19 stably, the scheme adopts a hydraulic driving mode to realize, when the clasping mechanism 18 needs to work, the driving mechanism 21 presses hydraulic oil into the oil channel 185 through the oil pipe 20, the pressed hydraulic oil enters the two piston cylinders 182, at this time, the hydraulic oil pushes the pistons 183 to move, the two pistons 183 move towards each other along the piston cylinder 182, so that the disc 19 between the two pistons 183 is tightly held, when the roller unit 1 moves, the disc 19 is pressed against one of the pistons 183, and the disc 19 presses the piston 183 into the piston cylinder 182, and when the piston 183 presses the piston cylinder 182, the pressed hydraulic oil is pressed into the other piston cylinder 182 through the oil passage, so that the holding failure caused by concentrated force application to one piston 183 by the disc 19 when the screw rod nut 17 drives the roller unit 1 to slide is avoided, and the self-adaptive effect is achieved; in the scheme, the driving mechanism 21 is driven by the electromagnet 217, when the electromagnet 217 is powered on, the output end of the electromagnet 217 pulls the pull rope 216, then the pull rope 216 pulls the pull rod 215, the pull rod 215 is provided with the pull ring, the pull rope 216 is tied on the pull ring, the pull rod 216 pulls the pull rod 215 to rotate around the hinged point of the pull rod 215 and the mounting plate 211, so that the pull rod 215 pushes the connecting rod 214 to move, the connecting rod 214 pushes the brake piston 213 to slide towards the piston cylinder 212, and therefore, hydraulic oil in the piston cylinder 212 is pressed into the piston cylinder 182 in the piston shell 181 through the oil pipe 20, and the disc 19 is tightly held.
Furthermore, an arc-shaped sliding groove is arranged on the mounting plate 211, a sliding block is arranged on the pull rod 215, the sliding block is arranged in the sliding groove in a sliding manner, a return spring is arranged in the sliding groove, one end of the return spring is fixed on the side wall of the sliding groove, the other end of the return spring is fixedly connected with the sliding block, when the roller unit 1 is pushed to the right position, the clasping mechanism 18 needs to release the disc 19, at this time, the return spring is arranged for resetting the brake piston 213, the electromagnet 217 is powered off, the pull rope 216 is loosened, at this time, the sliding block is pushed to slide in the sliding groove under the action of the return spring, the pull rod 215 is further pushed to rotate along the hinge joint of the pull rod 215 and the mounting plate 211 for resetting, after the clasping mechanism 18 releases the disc 19, the circumferential limit of the screw nut 17 disappears, at this time, the screw 16 continues, but not move along the screw 16, so that when the screw 16 rotates to drive other roller units 1 to slide, the roller unit 1 in place does not continue to slide.
As shown in fig. 6, the guide rail 3 is a linear circular guide rail, the sliding blocks 22 are respectively arranged at the centers of the two ends of the bottom of the base 101, the sliding blocks 22 are arranged in a sliding fit with the guide rail 3, the sliding blocks 22 are provided with a caliper for locking the sliding blocks 22 on the guide rail 3, and after the roller unit 1 slides in place, the sliding blocks 22 can be locked on the guide rail 3 through the caliper, so that the roller unit 1 is prevented from moving in the detection process. The axis of the center of the bottom of the sliding block 22 is provided with a trigger block 24 for triggering the limit switch 23, the bottom of the trigger block 24 is arc-shaped, and the trigger block 24 is arranged at the center of the sliding block 22, so that the position of the roller unit 1 when the limit switch 23 is triggered by movement is ensured to be right above the limit switch 23, and the positioning of the roller unit 1 is more accurate.
As shown in fig. 6, the guide rail 3 is provided with a plurality of limit switches 23, the slide block 22 can trigger the limit switches 23 when sliding along the guide rail 3, it should be noted that the limit switches 23 in the present embodiment are set according to the wheel positions of different vehicle types, that is, the limit switches 23 are correspondingly set at the wheel relative positions of each vehicle type, and the corresponding limit switches 23 are set for each vehicle type to be detected, so that when the roller unit 1 is adjusted according to the vehicle type to be detected, when the corresponding limit switches 23 all detect that the roller unit 1 triggers the limit switches 23, and when the limit switches 23 are always triggered, the detection of the corresponding vehicle type is satisfied, when the roller unit 1 moves to the position to be reached during the adjustment, the limit switches 23 are triggered, at this time, the electromagnet 217 can be powered off, the lead screw 16 stops pushing the roller unit 1 to slide along the guide rail 3, and when the limit switches 23 at the corresponding positions are always triggered, all the roller units 1 are in place, the detection can be performed, and it should be noted that the positions of the limit switches 23 of the respective vehicle types are preset, and corresponding programs are designed, or the detection is performed by adopting a manual control mode.
Furthermore, baffles 106 are arranged on the periphery of the base 101, openings 109 are formed in the baffles 106 positioned on two sides of the roller group provided with the synchronous pulley 105, the synchronous belt 8 penetrates through the openings 109, and a support plate is arranged on the top of the baffle 106 provided with the openings 109 and used for vehicle running.
As shown in fig. 5, the base 101 is provided with a tensioning device for tensioning the synchronous belt 8, and since all the rollers 102 are driven by one synchronous belt 8, since the distance between the first row and the last row of wheels of the vehicle is long, and the transmission of the synchronous belt 8 is loose at such a distance, which causes unstable transmission, in order to enable the synchronous belt 8 to be in close contact with each synchronous pulley 105 for transmission, the tensioning device is provided on the base of each roller unit 1 for tensioning the synchronous belt 8, and it should be noted that the tensioning device is shown in the figure, which belongs to the prior art and does not need to be described too much.
Further, the transmission shaft 11 is rotatably disposed on the frame 2.
As a further optimization of the scheme, a supporting mechanism is further arranged between the adjacent roller units 1, and because the distance between the roller units 1 can be adjusted according to different vehicle types, a gap can exist between the roller units 1 when in use, and if the gap is too large, the vehicle can not drive, and then the solution is to place an object for supporting between the roller units 1 for the vehicle to pass through after the adjustment is finished, and the supporting mechanism is arranged between the adjacent roller units 1 in another mode. The two ends of the supporting mechanism are respectively connected with the roller unit 1, the supporting mechanism can be adjusted along with the distance change between the roller units 1 when the roller units 1 are adjusted, the supporting mechanism comprises a scissor type telescopic mechanism, the telescopic direction of the supporting mechanism is horizontally placed, each supporting mechanism is provided with a plurality of scissor type telescopic mechanisms, each scissor type telescopic mechanism comprises two telescopic mechanisms which are distributed up and down, each telescopic mechanism is formed by sequentially hinging a plurality of X-shaped structures, the crossed parts of the X-shaped structures are hinged, the X-shaped structures are also hinged, the hinged parts between the X-shaped structures of the two telescopic mechanisms are connected with a supporting rod, the supporting rod is vertically arranged, the hinged part between the X-shaped structures at the uppermost end of the supporting rod and the hinged part between the X-shaped structures at the lowermost end of the supporting rod are hinged with the supporting rod, and then the hinged part between the two X-shaped structures between the two supporting rods is sleeved on the supporting, then a fixed rod is arranged on the roller unit 1, the fixed rod is vertically arranged, X-shaped structures positioned at two ends of the telescopic mechanisms are connected with the fixed rod, two points in each X-shaped structure are connected with the fixed rod, four points of the two telescopic mechanisms are connected with the fixed rod, the connecting points of the X-shaped structures positioned at the uppermost end and the lowermost end of the fixed rod are hinged with the fixed rod, the connecting points of the X-shaped structures between the X-shaped structures are sleeved on the fixed rod and can slide along the fixed rod, the height of the topmost part of the supporting mechanism is unchanged during stretching by adopting the structure, then an iron net is laid on the X-shaped structure at the top of the supporting mechanism, a driveway for vehicles to pass can be formed, wherein one end of the iron net is connected with one end of one roller unit 1, a net rolling device is arranged on the other roller unit 1, the other end of the iron net is wound in the net rolling device, so that the net in the net rolling device can be pulled, the mesh rolling device can collect redundant iron meshes into the mesh rolling device for storage when the mesh rolling device is reduced, the purpose of self-adaptive adjustment is achieved, the rollers are arranged at the bottom of the supporting rod and can bear large pressure, a channel for a vehicle to pass through can be formed between the roller units 1 when the distance between the roller units 1 is adjusted by adopting the structure, the degree of automation is higher, the mesh rolling device is convenient to use, and the supporting mechanism can be only arranged between the rollers 102 of the two roller units 1, and other regions can not be arranged.
The control system comprises a subsystem I, a subsystem II, a subsystem III and a coupling system, wherein the subsystem I inputs information of various vehicle types and sets position information of a limit switch 23 of a position of a roller unit 1 required by each vehicle type, and the vehicle information comprises a wheel base between adjacent wheels of the vehicle; the limit switches 23 are combined to form wheel position information of a corresponding vehicle type according to the wheel base relationship among the wheels; the vehicle information comprises the wheel base between the adjacent wheels of the vehicle; the limit switches 23 are combined according to the wheel base relation between wheels and matched with wheel position information of a corresponding vehicle type, the second subsystem controls the corresponding electromagnet 217 and electromagnetic clutch 14 to be powered on and powered off according to vehicle type information recorded in the second subsystem in a unified mode, the roller unit 1 is pushed to move to a corresponding position through the screw rod, when the second subsystem is used, the moving sequence of the roller unit 1 is optimized, the moving sequence of the roller unit 1 of the next vehicle type is adjusted according to the position of each roller unit 1 before moving, the roller unit 1 which is not needed to be used is located at an idle position and does not conflict with the roller unit 1 needed by the next vehicle type, the third subsystem detects electric signals of the limit switches 23 in real time, judges whether all the roller units 1 of the needed vehicle type are moved in place according to the vehicle type recorded in the second subsystem in a unified mode, and the coupling system detects the electromagnet 217, the electromagnetic clutch 1, the electric signals of the electromagnetic clutch 14 and the limit switch 23 sequentially control the subsystem I, the subsystem II and the subsystem III and the mutual coupling relation thereof.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (10)
1. A self-adaptive regulation method for a truck brake platform is characterized by comprising the following steps: comprises the following steps;
s1, a control system is arranged on the truck brake platform and comprises a subsystem I, a subsystem II, a subsystem III and a coupling system, wherein the subsystem I records wheel information of vehicles of different vehicle types, the wheel information comprises the number of wheel rows of the vehicles and the wheel base between adjacent wheels, and then a program is preset according to different vehicle types to determine the position of a roller unit (1) on the truck brake platform, which is required by the corresponding vehicle type;
s2, the detector selects the corresponding vehicle model recorded in the subsystem according to the vehicle model to be detected, and the subsystem collects the selected signal and transmits the vehicle information of the corresponding vehicle model to the subsystem II;
s3, the two subsystems correspondingly adjust the position of the roller unit (1) according to signals input by the subsystems in a unified manner, when in adjustment, the second subsystem controls an electromagnetic clutch (14) to be electrified to connect a driven shaft with a screw rod (16), then a driving motor (4) drives the driven shaft to drive the screw rod (16) to rotate, meanwhile, the second subsystem enables an electromagnet (217) arranged on the roller unit (1) to be adjusted to be electrified, the electromagnet (217) drives a pull rod (215) to rotate around a hinged point with a mounting plate (211) after being electrified, a brake piston (213) is pressed into a piston cylinder (212), so that driving hydraulic oil is pressed into a holding mechanism (18) through an oil pipe (20), two pistons (183) in the holding mechanism (18) are driven oppositely under the action of the driving hydraulic oil and lock a disc (19) positioned between the two pistons (183), and at the moment, the circumferential rotation of a screw rod nut (17) is limited, thereby the screw rod (16) rotates to drive the roller unit (1) to slide along the guide rail (3), and the roller unit (1) triggers a limit switch (23) arranged on the guide rail (3) when moving along the guide rail (3);
s4, the third subsystem detects the electric signal of the limit switch (23) in real time, when the third subsystem detects that the limit switch (23) corresponding to the position to which the roller unit (1) needs to move is triggered, the third subsystem feeds back a signal to the second subsystem, then the second subsystem controls an electromagnet (217) arranged on the roller unit (1) to be powered off, after the electromagnet (217) is powered off, a pull rod (215) resets under the action of a reset spring, the pull rod (215) drives a brake piston (213) to reset, and at the moment, driving hydraulic oil in a clasping mechanism (18) is drawn out when the brake piston (213) resets, then two pistons (183) in the clasping mechanism (18) move reversely to loosen the disc (19), and then after the roller unit (1) moves to the right position, a clamp device arranged corresponding to a slide block (22) on the roller unit (1) is locked, so that the position of the roller unit (1) is fixed;
s5, detecting electric signals of an electromagnet (217), an electromagnetic clutch (14) and a limit switch (23) in real time by a coupling system, judging whether all required roller units (1) are in place or not according to the vehicle models input by the subsystem, and completing the adjustment of the truck brake platform when all required roller units (1) move in place;
and S6, detecting the vehicle running on the truck brake platform to obtain detected data.
2. The utility model provides a drum braking platform that freight train braking detected usefulness which characterized in that: the roller device comprises a plurality of roller units (1) and guide rails (3), wherein the two guide rails (3) are arranged in parallel, the roller units (1) are in sliding fit with the two guide rails (3), the roller units (1) can move on the guide rails (3) along the guide rails (3), the guide rails (3) are provided with a plurality of limit switches (23), and the limit switches (23) can be triggered when the roller units (1) slide along the guide rails (3);
the roller unit comprises a base (101), a plurality of supporting beams (103) are arranged on the base (101) in parallel, two groups of roller sets are arranged on the base (101), each group of roller sets comprises two rollers (102) arranged in parallel, rotating shafts (104) are arranged at two ends of each roller (102), bearing seats (108) are arranged on the supporting beams (103), the rotating shafts (104) at two ends of each roller (102) are matched and connected with bearings in the bearing seats (108), so that the rollers (102) rotate on the base (101) around the bearing seats (108), wherein the rollers (102) of the two groups of rollers are respectively arranged coaxially correspondingly and are connected through couplers (107); the rotating shafts (104) of the rollers (102) in one roller group far away from one end of the other roller group are provided with synchronous belt wheels (105);
the automatic feeding device is characterized by further comprising a frame (2), the guide rail (3) is arranged on the frame (2), a driving motor (4) is arranged at the head end of the frame (2), the output end of the driving motor (4) is connected with a driving shaft (5), a driving synchronous pulley (6) is arranged on the driving shaft (5), a driven synchronous pulley (7) is arranged at the tail end of the frame (2), the driving synchronous pulley (6) is in transmission connection with the driven synchronous pulley (7) through a synchronous belt (8), the driven synchronous pulley (7), the driving synchronous pulley (6) and synchronous pulleys (105) on rollers (102) of the roller units (1) are in a straight line, and the synchronous pulleys (105) on the rollers (102) are in transmission connection with the driving synchronous pulleys (6) through the synchronous belt (8);
the driving shaft (5) is also provided with a first driving bevel gear (9), the first driving bevel gear (9) is engaged with a first driven bevel gear (10), the first driven bevel gear (10) is arranged at one end of a transmission shaft (11), the other end of the transmission shaft (11) is provided with a second driving bevel gear (12), the second driving bevel gear (12) is engaged with a second driven bevel gear (13), the second driven bevel gear (13) is connected with one end of a driven shaft, the other end of the driven shaft is connected with the input end of a speed reducer (15), the driven shaft is connected with the input end of the speed reducer (15) through an electromagnetic clutch (14), the output end of the speed reducer (15) is connected with a screw rod (16), and the other end of the screw rod (16) is rotatably connected with the frame (2); the screw rod (16) is arranged in parallel with the guide rail (3);
lead screw (16) on screw thread transmission be connected with a plurality of screw-nut (17), the number of screw-nut (17) corresponds with the number of cylinder unit (1), the bottom of base (101) be provided with and hold tightly mechanism (18), the external fixation of screw-nut (17) be provided with video disc (19), hold tightly mechanism (18) and be used for dying video disc (19) lock, make video disc (19) lead screw (16) drive screw-nut (17) when locking state remove along lead screw (16) to drive cylinder unit (1) and remove on guide rail (3), thereby adjust the position of cylinder unit (1).
3. The drum brake table for truck brake detection as claimed in claim 2, wherein: the clasping mechanism (18) comprises a piston shell (181), a flange plate (187) is arranged on the piston shell (181), the piston shell (181) is installed at the bottom of the base (101) through the flange plate (187), two piston cylinders (182) are arranged in the piston shell (181), the two piston cylinders (182) are arranged oppositely and coaxially, and pistons (183) are arranged in the two piston cylinders (182);
friction pads (184) are arranged on the end faces of the two opposite ends of the piston (183), a gap exists between the two friction pads (184), and the disc (19) is partially arranged between the two friction pads (184);
an oil duct (185) communicated with the two piston cylinders (182) is further arranged in the piston shell (181), an interface (186) is arranged on the piston shell (181), the interface (186) is communicated with the oil duct (185), the interface (186) is connected with an oil pipe (20), and the other end of the oil pipe (20) is connected with a driving mechanism (21).
4. The drum brake table for truck brake detection as claimed in claim 3, wherein: the driving mechanism (21) comprises a mounting plate (211) fixed at the bottom of the base (101), a piston cylinder (212) is arranged on the mounting plate (211), one end of the oil pipe (20) is communicated with the piston cylinder (212), a brake piston (213) is arranged in the piston cylinder (212), a connecting rod (214) is hinged to the brake piston (213), the other end of the connecting rod (214) is hinged to a pull rod (215), one end of the pull rod (215) is hinged to the mounting plate (211), and the connecting rod (214) is hinged to one end, close to the hinged point of the pull rod (215) and the mounting plate (211), of the pull rod (215);
one end, far away from a hinge point with the mounting plate (211), of the pull rod (215) is connected with a pull rope (216), an electromagnet (217) is arranged on the mounting plate (211), the output end of the electromagnet (217) is connected with the pull rope (216), the output end of the electromagnet (217) pulls the pull rope (216) when the electromagnet (217) is electrified, the pull rope (216) pulls the pull rod (215) to rotate around the hinge point of the pull rod (215) and the mounting plate (211), and then the brake piston (213) is pressed into the piston cylinder (212) through the connecting rod (214);
and the piston cylinder (182), the oil passage (185), the oil pipe (20) and the piston cylinder (212) are filled with driving hydraulic oil.
5. The drum brake table for truck brake detection as claimed in claim 4, wherein: the mounting panel (211) on be provided with an curved spout, pull rod (215) on be provided with the sliding block, the sliding block slide and set up in the spout, and be provided with reset spring in the spout, reset spring's one end is fixed on the lateral wall of spout, its other end and sliding block fixed connection.
6. The drum brake table for truck brake detection as claimed in claim 2, wherein: the guide rail (3) is a linear circular guide rail, the centers of two ends of the bottom of the base (101) are respectively provided with a sliding block (22), the sliding blocks (22) are arranged in a sliding fit with the guide rail (3), the sliding blocks (22) are provided with a clamp for locking the sliding blocks (22) on the guide rail (3), and the sliding blocks (22) can trigger a limit switch (23) when sliding along the guide rail (3);
a trigger block (24) is arranged on the axis of the center of the bottom of the sliding block (22) and used for triggering the limit switch (23), and the bottom of the trigger block (24) is arc-shaped.
7. The drum brake table for truck brake detection as claimed in claim 2, wherein: the novel roller group synchronous belt device is characterized in that baffles (106) are arranged on the periphery of the base (101), openings (109) are formed in the baffles (106) located on two sides of the roller group with the synchronous belt wheels (105), and the synchronous belt (8) penetrates through the openings (109).
8. The drum brake table for truck brake detection as claimed in claim 2, wherein: the base (101) is provided with a tensioning device for tensioning the synchronous belt (8).
9. The drum brake table for truck brake detection as claimed in claim 2, wherein: the transmission shaft (11) is rotatably arranged on the frame (2).
10. The drum brake table for truck brake detection as claimed in claim 4, wherein: the automatic control system comprises a subsystem I, a subsystem II, a subsystem III and a coupling system, wherein the subsystem I inputs information of various vehicle types and sets position information of a limit switch (23) of the position of a roller unit (1) required by each vehicle type, and the vehicle type information comprises the wheel base between adjacent wheels of the vehicle; the limit switches (23) are combined according to the wheel base relationship between the wheels and matched with the wheel position information of the corresponding vehicle type;
the subsystem reads vehicle type information recorded by the selected subsystem in a unified mode to control the corresponding driving mechanism (21) and the electromagnetic clutch (14) to work, the driven shaft drives the screw rod (16) to rotate after the electromagnetic clutch (14) is electrified, an electromagnet (217) in the driving mechanism (21) is electrified to enable the holding mechanism (18) to hold the disc (19), and the screw rod (16) drives the roller unit (1) to trigger the corresponding limit switch (23) to move to the corresponding position;
the subsystem II selects corresponding roller units (1) to be combined to be matched with the corresponding vehicle type according to the vehicle type, controls the moving sequence of the plurality of roller units (1) to reach the corresponding positions, and adjusts the moving sequence of the corresponding roller units (1) of the next vehicle type to be detected according to the positions of the roller units (1) before moving, so that the roller units (1) which are not needed to be used are positioned at the idle positions and do not conflict with the positions of the roller units (1) required by the next vehicle type;
the subsystem III detects the electric signal of the limit switch (23) in real time, and judges whether all the roller units (1) required to be used of the required vehicle type move in place according to the vehicle type recorded in the subsystem III;
the coupling system detects the electric signals of the clasping mechanism (18), the electromagnetic clutch (14) and the limit switch (23) in real time and controls the subsystem I, the subsystem II and the subsystem III and the mutual coupling relation thereof in sequence.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010679548.9A CN111562120B (en) | 2020-07-15 | 2020-07-15 | Self-adaptive adjusting method for truck brake table and roller brake table for detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010679548.9A CN111562120B (en) | 2020-07-15 | 2020-07-15 | Self-adaptive adjusting method for truck brake table and roller brake table for detection |
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| CN111562120A CN111562120A (en) | 2020-08-21 |
| CN111562120B true CN111562120B (en) | 2020-10-02 |
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