CN2448997Y - Hydraulic clutch with torque protector - Google Patents

Abstract

The utility model relates to a hydraulic clutch with a torque protector, which chiefly comprises a box body, an input shaft, an output shaft, a friction sheet type clutch, a hydraulic piston, a steering valve assembly, etc., wherein the end surface of the hydraulic piston is provided with a contact seat and a hydraulic signal contact; the contact seat is communicated with one side of a rotating oil cylinder in the steering valve assembly by an oil inlet passage; the other side of the rotating oil cylinder is also provided with an oil supply passage which is communicated with the steering valve, and the oil supply passage and the oil inlet passage are communicated by a throttle valve. The utility model has the characteristics of simple and reasonable structure, easy use and low cost. When the clutch is overloading, the automatic separation of the clutch can be safely and directly solved with low cost, the goal of effective protection is obtained, etc.

Description

The hydraulic coupling of band torque protection device

The utility model relates to a kind of mechanical transmission, especially a kind of have a protective gear be used to transmit power plant between prime mover and the work mechanism.

In the prior art, the structure of clutch mainly contains two kinds, and a kind of is the rigidity clutch structure, as jaw clutch etc.; Another kind is flexible clutch structure, as friction cone, friction disk type etc.In real work, when the transferring power overburdening, there is not special super torque protection device as positive clutch, clutch will damage so; And to flexible clutch, as friction plate clutch at short notice, can skid by fastness, temporarily be eased, but the time one to be long, fastness generates heat in a large number and causes burning.At present, in hydraulic coupling, still can not utilize between the friction plate and can make the automatic separated structures of friction plate once skidding.Though have at present and a kind ofly send the device that instruction makes throw-out-of clutch after utilizing speed discrepancy between input shaft and the output shaft machine being handled as calculated, it costs an arm and a leg, and is technical very complicated, is not suitable at home and applies.

The purpose of this utility model is to overcome the deficiency of above-mentioned existence, and a kind of hydraulic coupling of simple and reasonable for structure and compact band torque protection device is provided.

The purpose of this utility model is finished by following technical solution, the utility model mainly includes casing, input coupling, input shaft, clutch base, shell and interior outside friction disc, hydraulic piston, output shaft, output shaft coupling and control valve assembly, the end face of hydraulic piston is provided with the contact base that directly is communicated in angling cylinder one side in the control valve assembly by in-line, one hydraulic pressure signal contact is housed on this contact base, also has an oil transportation road to be communicated in control valve, and be communicated with a throttle valve between oil transportation road and the in-line at the opposite side of angling cylinder.

Hydraulic pressure signal contact described in the utility model can closely be contacted with on the anti-skidding teeth wall of clutch base when hydraulic piston is pressed in friction plate, and relatively rotate under the effect at the clutch base of this anti-skidding profile of tooth, the hydraulic pressure signal contact is stressed to contract in can be on contact base and moves or the displacement of turning back, and opens in-line.

Description of drawings is as follows:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that hydraulic circuit of the present utility model connects and contact signal transduction process principle schematic.

Below in conjunction with accompanying drawing the utility model is described in detail: shown in Figure 1, the utility model is mainly by casing 1, input coupling 2, input shaft 3, clutch base 4, shell 5 and interior outside friction disc 6, hydraulic piston 7, output shaft 8, output shaft coupling 9 and control valve assembly 10 are formed.The input shaft 3 that has input coupling 2 supports mutually and is fixed on the casing 1 by bearing 11,12, is fixed with clutch base 4, oil pump gear 13 and interior friction plate on this input shaft 3.Corresponding clutch outer member 5 is fixed on the output shaft 8, and outside friction disc and hydraulic piston 7 are housed in the clutch outer member 5, also is fixed on the casing 1 by corresponding bearing and have the output shaft 8 of exporting shaft coupling 9.Hydraulic system control valve assembly 10 is installed on casing 1 in addition.Shown in Figure 2, the end face of the described hydraulic piston 7 of the utility model is provided with contact base, and a hydraulic pressure signal contact 14 is housed in it.Contact base is connected with in-line 15, and this in-line 15 directly is communicated in a side of angling cylinder 16 in the control valve assembly 10; And also have an oil transportation road 17 to be communicated in control valve 18, and be connected with a throttle valve 19 between oil transportation road 17 and the in-line 15 at the opposite side of this angling cylinder 16.The end wall of the described clutch base 4 of the utility model is provided with anti-skidding toothed surface, and the anti-skidding toothed surface that the front end of hydraulic pressure signal contact 14 faces on the clutch base 4 is settled.

Power transmission process of the present utility model is: is connected with prime mover by input coupling 2, and by input shaft 3, clutch base 4, interior outside friction disc 6, clutch outer member 5, output shaft 8 reaches work mechanism by output shaft coupling 9 again.Hydraulic system oil circuit working procedure described in the utility model is: the oil in the oil sump 20 forms high pressure oil after oil pump 21 is suppressed, and after control valve 18 controls, the one tunnel leads to hydraulic piston 7; Another route oil transportation road 17 passes to angling cylinder 16, pressure oil can be delivered to in-line 15 through throttle valve 19 simultaneously, and in the end of in-line, and promptly contact base is in the obturation in-line 15 of contact 14 and is formed with certain high pressure.At high pressure oil hydraulic piston 7 is moved axially, during outside friction disc 6, hydraulic pressure signal contact 14 also will move thereupon, closely contact with clutch base 4 in compressing.At this moment, input shaft 3 and output shaft 8 rotate synchronously, and clutch base 4, interior outside friction disc 6, clutch outer member 5, hydraulic piston 7 and hydraulic pressure signal contact 14 also rotate together synchronously, and this moment, clutch was in the joint working state.When moment of torsion surpasses certain value; interior outside friction disc 6 begins to skid; produce relative rotation; be that clutch base 4 has relative displacement with clutch outer member 5; at this moment the piston 7 and the 14 relative clutch bases of the hydraulic pressure signal contact in the piston that are contained in the clutch outer member produce displacement; rotate; this moment, hydraulic pressure signal contact 14 was under the effect of the anti-skidding profile of tooth end wall of clutch base; contract on contact base, producing and move or the displacement of turning back; leave the origin-location and make in-line 15 conductings; pressure oil leaks the oil pressure in the in-line is reduced rapidly; at this moment act on and produce a kind of pressure difference between the oil transportation road of angling cylinder both sides and the in-line; this pressure difference acts on angling cylinder; make it rotate a position; and the control valve that drive simultaneously is attached thereto is returned to original off-position; clutch will separate (disengagement) after losing pressure oil automatically, thereby play protective action.As working on, can make control valve on inspection, work on to the conjugation position of working.

The utility model compared with prior art, have simple and reasonable for structure, compact, easy to use, Safe and reliable, its use cost is lower, and result of use is better, can solve directly, at low cost clutch Device separates when excess load safely automatically, reaches the characteristics such as effective protection purpose. The utility model not only The hydraulic clutch with protective device can be designed to separately, and the clutch with protective device can be designed to Decelerator, the clutch speed increaser or fall, suitable transmission devices such as marine gearbox.

Claims (2)

1, a kind of hydraulic coupling with torque protection device, it mainly includes casing, input coupling, input shaft, clutch base, shell and interior outside friction disc, hydraulic piston, output shaft, output shaft coupling and control valve assembly, the end face that it is characterized in that hydraulic piston (7) is provided with contact base, one hydraulic pressure signal contact (14) is housed in it, and contact base is connected with in-line (15), and this in-line (15) directly is communicated in a side of angling cylinder (16) in the control valve assembly (10); And also have an oil transportation road (17) to be communicated in control valve (18) at the opposite side of this angling cylinder (16), be connected with a throttle valve (19) between oil transportation road (17) and the in-line (15).

2, the hydraulic coupling of band torque protection device as claimed in claim 1; it is characterized in that described clutch base (4) end wall is provided with anti-skidding toothed surface, the anti-skidding toothed surface that the front end of hydraulic pressure signal contact (14) faces on the clutch base (4) is settled.

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