Summary of the invention
The technical issues that need to address of the present invention have provided a kind of three rod-type retention devices, are intended to solve at present bounce-back easily and impact that pedestrian, three bars are improper to come off and use accurate magnetic grid, make control adjust the defective of complicated difficulty.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
Comprise base plate, its central axis bearing is equipped with the main shaft that two bearings in embedding, and front-end of spindle is equipped with three three bar swivel heads of 120 degree each other, and three bar swivel heads are equipped with the linkage of meeting an urgent need of controlling three bar swivel heads by emergent solenoid actuated connecting rod;
Comprise key pin setting-in ratchet in rear-end of spindle, the side of ratchet is 120 degree and has three square type openings, and between three square type open centre lines, 20 degree have 12 triangular form ratchets at interval; The bilateral symmetry of ratchet is equipped with a pair of can forbidding or the open ratchet that is connected the three bars rotation on the ratchet according to control command, and is used for driving the tubulose electromagnet of ratchet;
Three gong bolts are passed through on same axial plane top at ratchet, and cloverleaf cam is housed;
Comprise that also rotatable guiding holds up clamp dog, be fixed on the base plate by king, and be positioned on the base plate axis with two forward and reverse torsion springs (end is looked among the figure);
Compared with prior art, the invention has the beneficial effects as follows: solved the defective that three bars come off easily and three bars rebound; Improved the push rod comfort level, improved passage rate, reduced power consumption, prolonged device application life, control is adjusted simple and reliable, has reduced cost.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
By Fig. 1,2,3,4,5,6,7 as seen: three rod-type retention devices of the present invention comprise base plate 1, its central axis bearing is equipped with the main shaft 10 that two bearings in embedding, front-end of spindle be equipped with three each other three bar swivel heads, 11, the three bar swivel heads 11 of 120 degree the linkage 110 of meeting an urgent need of controlling three bar swivel heads 11 by emergent electromagnet 12 drive link 13 is housed;
Described base plate 1 aluminium alloy compression casting moulding;
When outage, described emergent electromagnet 12 shaft rear ends compression spring returns releases the linkage 110 that falls that drive link is controlled three bar swivel heads 11, and flat one three endways bar is hung; After the energising, emergent electromagnet 12 shaft rear end length of spring compressed drive link break away to fall linkage 110, make the flat perpendicular and locking of three bars;
Described emergent electromagnet 12 adopts the tubulose electromagnet;
On drive circuit, adopt two voltage time-delay switching controls, initial in energising (starting), adopt the high voltage Vh 2-3 of normal working voltage (be about doubly) to make the transient starting power supply, about 50-100 millisecond of time is about to power supply and is converted to the low voltage V1 that keeps that can keep device duty and temperature rise not to exceed allowed band after waiting to start; So just can strengthen the moment of compression spring in the linkage 110 of meeting an urgent need, more tightly locking three bars;
Comprise key pin setting-in ratchet 2 in main shaft 10 rear ends, the side of ratchet 2 is 120 degree and has three square type openings 201, and between three square type open centre lines, 20 degree have 12 triangular form ratchets 202 at interval; The bilateral symmetry of ratchet 2 is equipped with a pair of can forbidding or the open ratchet 21a.21b that is connected the three bars rotation on the ratchet according to control command, and is used for driving the tubulose electromagnet 22a.22b of ratchet;
Ratchet 21a and 21b can forbid or the open three bars rotation that is connected on the ratchet according to control command; Drive ratchet electromagnet 12 and adopt the tubulose electromagnet, on drive circuit, adopt two voltage time-delay switching controls, even three-bar blocking device utilization and operation under normally closed pattern can guarantee that also the electromagnet temperature rise does not exceed allowed band;
Three gong bolts are passed through on same axial plane top at ratchet 2, and cloverleaf cam 3 is housed;
Described cloverleaf cam 3, its outside is a disk 30, one piece of column type permanent-magnet steel 301 as angle control sensor is respectively inlayed by 120 degree in described disk 30 outsides; The inboard is a cloverleaf cam 3, the tight card in its edge gong bolt type roller bearing 31; Described roller bearing 31 is sleeved on an end of perpendicular type swing arm 32, and the intermediate shaft hole of described swing arm 32 is fixed on the base plate 1 by vertical shaft 33, and the other end of swing arm 32 is equipped with extension spring 34 and adjustable hydraulic buffer 35;
Be forced to embed in the depression of cloverleaf cam 3 when the bearing in the swing arm 32 31 is subjected to the tractive of extension spring 34, make one in three bars to be horizontal the location, form the barrier functionality of three bars;
Described adjustable hydraulic buffer 35, its mounting bracket 36 is fixed on the base plate, and the oscillating bearing 37 of flexible axle head is connected in the swing arm 32;
Tension spring is too fast to be resetted to avoid, and simultaneously, can adjust the damping amplitude according to the actual state in the utilization, has improved the push rod comfort level;
Comprise that also rotatable guiding holds up clamp dog 4, be fixed on the base plate 1 by king 41, and be positioned on the base plate axis with two forward and reverse torsion springs;
When ratchet 2 is in three bar horizontal levels, hold up in the square type opening 201 that clamp dog 4 is in ratchet 2, if when any direction promotes three bars and spends greater than 20,2 promotions of ratchet are held up clamp dog 4 pendulum and are revolved, make and hold up in the clamp dog 4 sliding triangular form ratchets 202 that are embedded on the ratchet 2, force ratchet 2 to enter unidirectional rotation status, just can free after having only the ratchet of allowing rotation 120 degree, reached the technical requirements that fat ends the bounce-back of three bars.
Below operating principle of the present invention is described as follows:
By Fig. 8,9,10,11,12,13 as seen: one piece of column type permanent-magnet steel 301 is respectively inlayed by 120 degree in described cloverleaf cam disk outboard disc 30 outsides, cooperates three Hall switch S1 that distribute on the circuit board 302, S2, and S3 controls the rotation situation of three bars; Wherein, S1 is three bar zero degree sensors, and S2 is for just changeing sensor (reseting sensor when also promptly reversing), and S3 is counter-rotating sensor (reseting sensor when also promptly just changeing).
After the The whole control power on circuitry:
One-chip computer HC on the control circuit board 302 enters start program:
(1) send Q1 high level " 1 " and drive emergent electromagnet 12 high voltage Vh adhesives, Q1 " 1 " time-delay was kept for 2 seconds;
(2) send Q2 high level " 1 " and keep emergent electromagnet 12 low-voltage V1 adhesives, at this moment, Q1 becomes low level " 0 "
(3) detect three bar positions near switching signal Sp?
If Sp is " 0 ": (three bars are not flat perpendicular, and complete machine can not move and send Q0 and report to the police! ) program returns initial state;
If Sp is that (three bars are flat perpendicular, and complete machine can move " 1 "! ) program enters next step;
(4) do you continue to detect the instruction Cp that has permission current?
If Cp is " 0 ": (but there is not right of way signal, but three bars are illegally moved?) continue to detect zero degree sensor S1 in the zero degree position?
If S1 is " 0 ": (three bars are illegally moved: zero degree sensor S1 blackout) one-chip computer HC sends Q3 high level " 1 " and drives ratchet electromagnet 22A, 22B high voltage Vh adhesive, and Q3 " 1 " time-delay was kept for 2 seconds;
(5) send Q4 high level " 1 " and keep ratchet electromagnet 22A, 22B low-voltage V1 adhesive, at this moment, Q3 becomes low level " 0 ": (forbid that three bars are rotated further, have only after three bars reset that the S1 signal recovers, could release magnet.)
If S1 is " 1 ": (three bars do not change in the zero degree position), program is returned initial state, continues to restart to patrol survey.
If Cp is " 1 ": (right of way signal has been arranged, but three bars are moved?) continue to detect zero degree sensor S1 in the zero degree position?
Because the instruction of can passing through has been arranged, three bars can be moved to positive clockwise, zero degree sensor S1 blackout, and S1 is " 0 ": one-chip computer HC reads and preserves first zero degree sensor signal S1, (at this moment, Q3, Q4 ratchet control output will be under an embargo.)
(6) because unidirectional restrictive function of holding up clamp dog 4 has been arranged, three bars can only be continued to move to positive clockwise, one-chip computer HC continues to read and preserves second and just changeing sensor signal S2, on electric pulse change, (be noted that: second signal that three bars read and preserve when being moved by anticlockwise is S3)
(7) because unidirectional restrictive function of holding up clamp dog 4 arranged,, three bars still can only be continued move to positive clockwise, and near next zero degree.One-chip computer HC continues to read and preserve the 3rd electric pulse on the reseting sensor signal S3 and changes (be noted that: the 3rd the reseting sensor signal that three bars read and preserve when being moved by anticlockwise is S2)
(8) at this moment, be subjected to extension spring 34 tractives, the bearing 31 in the swing arm 32 is forced to force to embed in the depression of three bar dial cams 3, makes one in three bars 11 to be horizontal the location, forms the barrier functionality of three bars.Behind the 3rd the reseting sensor signal S2 or S3 that one-chip computer HC reads and preserves, deduct a current command signal as inner clear command, and make program get back to initial state; Continue said process.
Certainly, one-chip computer HC also can be provided with current overtime limiting command.