阅读说明：本技术 带液压离合装置的球笼式万向联轴器 (Rzeppa universal coupling with hydraulic clutch ) 是由 王何群 吴华涛 陈思立 李丹 田冬泳 李文喜 于 2019-03-19 设计创作，主要内容包括：一种带液压离合装置的球笼式万向联轴器,主要用于石油压裂泵撬设备用万向联轴器的离合。内圈一与主动端轴伸配合连接,实现动力输入,内圈一经钢球一与外圈一连接,外圈一上沿圆周径向有一条联通各条直沟道的滚道；外圈一与外圈二相连；外圈二经钢球二与内圈二连接,内圈二与从动端法兰轴通过平键配合连接,实现动力输出；法兰轴内设有液压离合装置,动力断开时通过向液压接口座内注入液压油,油压推动滑座与推杆一起压缩弹簧并推动推板座与推板,推板推动外圈一与外圈二同时右移,使钢球一球进入到外圈一的滚道内,钢球一空转后动力断开。本发明安装简单,能实现较大的角度补偿与长度补偿,可避免联轴器温升较大及液压油泄露的问题。(A ball cage type universal coupling with a hydraulic clutch device is mainly used for clutching of the universal coupling for petroleum fracturing pump prying equipment. The inner ring I is connected with the driving end shaft in a matching mode to realize power input, the inner ring I is connected with the outer ring I through a steel ball I, and a roller path communicated with each straight channel is arranged on the outer ring I along the circumferential radial direction; the outer ring I is connected with the outer ring II; the outer ring II is connected with the inner ring II through a steel ball II, and the inner ring II is connected with the driven end flange shaft in a matched manner through a flat key, so that power output is realized; a hydraulic clutch device is arranged in the flange shaft, when power is disconnected, hydraulic oil is injected into the hydraulic interface seat, the hydraulic oil pushes the sliding seat and the push rod to compress the spring and push the push plate seat and the push plate together, the push plate pushes the first outer ring and the second outer ring to move right simultaneously, a first steel ball enters a raceway of the first outer ring, and power is disconnected after the first steel ball idles. The invention has simple installation, can realize larger angle compensation and length compensation, and can avoid the problems of larger temperature rise of the coupler and leakage of hydraulic oil.)

1. The utility model provides a take hydraulic clutch's rzeppa universal joint which characterized in that: the inner ring I (1) is connected with the driving end shaft in a stretching fit mode to achieve power input, the inner ring I (1) is connected with the outer ring I (6) through a steel ball I (5), and a roller path (35) communicated with each straight channel on the outer ring I (6) is arranged on the outer ring I (6) in the circumferential radial direction; the outer ring I (6) is connected with the outer ring II (12); the outer ring II (12) is connected with the inner ring II (15) through a steel ball II (14), and the inner ring II (15) is connected with a driven end flange shaft (23) in a flat key matching manner to realize power output; a hydraulic clutch device is arranged in a flange shaft (23), when power is disconnected, hydraulic oil is injected into a hydraulic interface seat (29), the hydraulic pressure pushes a sliding seat (22) and a push rod (16) to compress a spring (19) and push a push plate seat (7) and a push plate (11) together, the push plate (11) pushes an outer ring I (6) and an outer ring II (12) to move right simultaneously, a first steel ball (5) enters a raceway (35) of the outer ring I (6), and the power is disconnected after the first steel ball (5) idles.

2. The rzeppa universal coupling with hydraulic clutch according to claim 1, characterized in that: a plurality of straight channels which are axially distributed along the circumference at equal distances are arranged on the inner ring I (1), the outer ring I (6), the inner ring II (15) and the outer ring II (12); a first steel ball (5) is arranged between the first inner ring (1) and the first outer ring (6), the first steel ball (5) is arranged in a window of the first retainer (4), and a second outer ring (12) is connected with the first outer ring (6) through a bolt (8), a first nut (9) and a washer (10); a second steel ball (14) is arranged between the second outer ring (12) and the second inner ring (15), the second steel ball (14) is arranged in a window of the second retainer (13), and the second inner ring (15) is connected with a flange shaft (23) through a flat key (20); the lip seal I (2) is arranged on the gland I (3), and the gland I (3) is connected with the outer ring I (6); the lip-shaped sealing II (18) is arranged on the pressing cover II (17), and the pressing cover II (17) is connected with the outer ring II (12).

3. The rzeppa universal coupling with hydraulic clutch according to claim 1, characterized in that: a hydraulic interface seat (29) of the clutch device is fixed on the flange shaft (23) through a screw (25), and an O-shaped ring I (26) is arranged between the hydraulic interface seat (29) and the flange shaft (23); the sliding seat (22) is arranged on the left side of a cavity of the flange shaft (23), one side of the sliding seat (22) is in contact with the hydraulic interface seat (29), and a first sealing ring (21), a second sealing ring (24) and a sealing ring (30) are arranged between the sliding seat (22) and the flange shaft (23); the push rod (16) is connected with the sliding seat (22) through a second nut (27) and a gasket (28), and an O-shaped ring II (31) is arranged between the push rod (16) and the sliding seat (22); a spring (19) is arranged on the push rod (16) in a penetrating way, a limiting sleeve (32) and a guide sleeve (33) are arranged in the cavity wall of the flange shaft (23), one side of the spring (19) is contacted with the other side of the sliding seat (22), and the other side of the spring (19) is propped against the step surface of the inner cavity of the flange shaft (23); the push plate seat (7) is arranged on the push rod (16) and is limited and anti-loose through a pin (34), the excircle of the push plate (11) with the arc surfaces on the inner diameter and the outer diameter is arranged in a groove between the outer ring I (6) and the outer ring II (12), and the inner circle is arranged in the groove of the push plate seat (7).

4. The rzeppa universal coupling with hydraulic clutch according to claim 1, characterized in that: the raceway (35) is circular, oval or kidney-shaped.

5. The rzeppa universal coupling with hydraulic clutch according to claim 1, characterized in that: the center distance between the first steel ball (5) and the raceway (35) is set to be L, the distance between the left end face of the second retainer (13) and the inner end face of the second gland (17) is set to be S, the distance between the left end face of the first inner ring (1) and the right end face of the push plate seat (7) is set to be M, the distance between the left end face of the limiting sleeve (32) and the inner end face of the sliding seat (22) is set to be D, and the size of the coupler structure meets the condition that S is larger than L, M is larger than L.

Technical Field

The invention relates to the technical field of coupling transmission, in particular to a universal coupling with a clutch function for petroleum fracturing pump pry equipment.

Background

Because the injection operation of the petroleum fracturing pump needs to ensure the continuity of the operation, at present, the petroleum fracturing pump skid usually adopts an arrangement structure with one motor and two pumps. When the two pumps work simultaneously in normal work, if an emergency situation occurs on one side, such as damage of a transmission shaft or other special situations, the transmission shaft on one side can be separated from power to stop the pumps, and the other pump can still work independently. Therefore, the continuous and smooth operation of the pump can be ensured, the immeasurable economic loss is avoided, and the equipment damage and the potential safety hazard of operators caused by unexpected accidents can be effectively prevented.

In addition, there is a unilateral flange type coupler which relies on hydraulic pressure to push the spring to contact or separate from the friction plate so as to realize the clutch function. Meanwhile, the angular deviation compensation quantity and the axial displacement compensation quantity of the coupler are small, the concentricity of the motor shaft and the input shaft of the pump needs to be checked during installation, the concentricity needs to be ensured within 0.7mm, and the axial installation distance between the motor shaft and the fracturing pump needs to be strictly controlled. The whole fracturing pump prying device is dozens of tons in weight, the motor and the pump are heavy, and the transmission shaft is difficult to install and adjust. In use, the transmission shaft can not flexibly respond to the axial movement of the fracturing pump, the axial displacement compensation amount is small, and the problem of damage to the spline of the pinion shaft of the fracturing pump is easy to occur.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the rzeppa universal coupling with the hydraulic clutch device, which is convenient to install and can realize larger angle compensation, axial length compensation and clutch functions.

In order to achieve the purpose, the first inner ring is connected with the driving end shaft in an extending fit mode to achieve power input, the first inner ring is connected with the first outer ring through the first steel ball, and a raceway communicated with each straight channel on the first outer ring is arranged on the first outer ring in the circumferential radial direction; the outer ring I is connected with the outer ring II; the outer ring II is connected with the inner ring II through a steel ball II, and the inner ring II is connected with the driven end flange shaft in a matched manner through a flat key, so that power output is realized; a hydraulic clutch device is arranged in the flange shaft, when power is disconnected, hydraulic oil is injected into the hydraulic interface seat, the hydraulic oil pushes the sliding seat and the push rod to compress the spring and push the push plate seat and the push plate together, the push plate pushes the first outer ring and the second outer ring to move right simultaneously, a first steel ball enters a raceway of the first outer ring, and power is disconnected after the first steel ball idles.

A plurality of straight channels which are axially distributed along the circumference at equal distances are arranged on the inner ring I, the outer ring I, the inner ring II and the outer ring II; a first steel ball is arranged between the first inner ring and the first outer ring, the first steel ball is arranged in a window of the first retainer, and the second outer ring is connected with the first outer ring through a bolt, a first nut and a washer; a second steel ball is arranged between the second outer ring and the second inner ring, the second steel ball is arranged in a window of the second retainer, and the second inner ring is connected with the flange shaft through a flat key; the lip seal I is arranged on the gland I, and the gland I is connected with the outer ring I; the lip-shaped seal II is arranged on the gland II, and the gland II is connected with the outer ring II.

A hydraulic interface seat of the clutch device is fixed on the flange shaft through a screw, and an O-shaped ring I is arranged between the hydraulic interface seat and the flange shaft; the sliding seat is arranged on the left side of the flange shaft cavity, one side of the sliding seat is in contact with the hydraulic interface seat, and a first sealing ring, a second sealing ring and a sealing ring are arranged between the sliding seat and the flange shaft; the push rod is connected with the sliding seat through a second nut and a gasket, and an O-shaped ring II is arranged between the push rod and the sliding seat; the spring is arranged on the push rod in a penetrating way, the limiting sleeve and the guide sleeve are arranged in the cavity wall of the flange shaft, one side of the spring is contacted with the other side of the sliding seat, and the other side of the spring is propped against the step surface of the inner cavity of the flange shaft; the push plate seat is installed on the push rod, the push plate seat is limited and anti-loose through a pin, the excircle of the push plate with the arc surface on the inner diameter and the outer diameter is installed in the groove between the outer ring I and the outer ring II, and the inner circle is installed in the groove of the push plate seat.

The raceway is circular, oval or kidney-shaped.

The center distance between the first steel ball and the raceway is set to be L, the distance between the left end face of the second retainer and the inner end face of the second gland is set to be S, the distance between the left end face of the first inner ring and the right end face of the push plate seat is set to be M, the distance between the left end face of the limiting sleeve and the inner end face of the sliding seat is set to be D, and the structural size of the coupler meets the requirements that S is larger than L, M is larger than L.

According to the hydraulic clutch device, when the pump needs power disconnection, hydraulic oil is injected into the hydraulic interface seat, the oil pressure pushes the sliding seat and the push rod to compress the spring together and pushes the push plate seat and the push plate, the push plate pushes the first outer ring and the second outer ring to move right simultaneously, so that a first steel ball enters a raceway of the first outer ring, and the distance between the first outer ring and the second outer ring to move right is controlled by the limiting sleeve. When the pump needs to work again, hydraulic oil is unloaded, the spring in a compressed state drives the outer ring I, the outer ring II, the sliding seat and the like to return to the original positions, the steel ball I enters the axial channel of the outer ring I, and power is connected again.

Compared with the prior art, the invention has the following advantages:

1. the coupler is simple to mount, and can realize larger angle compensation and length compensation.

2. Compared with the original coupler, the length change generated by axial movement of the fracturing pump can be responded more quickly, the length change compensation is carried out in time, and the condition that the spline of the pinion shaft of the fracturing pump is damaged is effectively avoided.

3. The hydraulic clutch device of the coupler is normally closed in a working state (normal state), oil is not needed to be filled, certain oil pressure is kept, the oil pressure is kept only for a short time when power needs to be disengaged, and the number of times of disengagement in the whole service life cycle of the pump is quite small. Therefore, compared with the original friction plate clutch type coupler, the problems that the coupler needs to keep oil pressure in a normal state, temperature rise is large, and hydraulic oil leaks are solved.

4. The continuous and smooth operation of the pump can be ensured, the immeasurable economic loss is avoided, and the equipment damage and the personnel safety hidden danger caused by the unexpected situation can be effectively prevented.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of the installation position of the present invention.

Detailed Description

As shown in figures 1 and 2, an inner ring I1 of the invention is connected with a driving end shaft in a stretching fit manner to realize power input, the inner ring I1 is connected with an outer ring I6 through a steel ball I5, a raceway 35 communicated with each straight channel on the outer ring I is arranged on the outer ring I6 along the circumferential radial direction, and the raceway 35 is circular, oval or kidney-shaped. (ii) a The outer ring I6 is connected with the outer ring II 12; the outer ring II 12 is connected with the inner ring II 15 through a steel ball II 14, and the inner ring II 15 is connected with the driven end flange shaft 23 in a matched manner through a flat key, so that power output is realized; a hydraulic clutch device is arranged in the flange shaft 23 to realize the clutch function of the coupler.

A plurality of straight channels which are axially distributed along the circumference at equal distance are arranged on the inner ring I1, the outer ring I6, the inner ring II 15 and the outer ring II 12; a first steel ball 5 is arranged between the first inner ring 1 and the first outer ring 6, the first steel ball 5 is arranged in a window of the first retainer 4, and a second outer ring 12 is connected with the first outer ring 6 through a bolt 8, a first nut 9 and a washer 10; a second steel ball 14 is arranged between the second outer ring 12 and the second inner ring 15, the second steel ball 14 is arranged in a window of the second retainer 13, and the second inner ring 15 is connected with a flange shaft 23 through a flat key 20; the lip seal I2 is arranged on the gland I3, and the gland I3 is connected with the outer ring I6; the second lip seal 18 is mounted on the second gland 17, and the second gland 17 is connected with the second outer ring 12.

A hydraulic interface seat 29 of the clutch device is fixed on the flange shaft 23 through a screw 25, and an O-shaped ring I26 is arranged between the hydraulic interface seat 29 and the flange shaft 23; the sliding seat 22 is arranged on the left side of a cavity of the flange shaft 23, one side of the sliding seat 22 is in contact with a hydraulic interface seat 29, and a first sealing ring 21, a second sealing ring 24 and a sealing ring 30 are arranged between the sliding seat 22 and the flange shaft 23; the push rod 16 is connected with the sliding seat 22 through a second nut 27 and a gasket 28, and an O-shaped ring second 31 is arranged between the push rod 16 and the sliding seat 22; the spring 19 is arranged on the push rod 16 in a penetrating way, the limiting sleeve 32 and the guide sleeve 33 are arranged in the cavity wall of the flange shaft 23, one side of the spring 19 is contacted with the other side of the sliding seat 22, and the other side of the spring 19 is propped against the step surface of the inner cavity of the flange shaft 23; the push plate seat 7 is arranged on the push rod 16 and is limited and anti-loose through a pin 34, the excircle of the push plate 11 with the arc surfaces on the inner diameter and the outer diameter is arranged in the groove between the outer ring I6 and the outer ring II 12, and the inner circle is arranged in the groove of the push plate seat 7.

The center distance between the first steel ball 5 and the raceway 35 is set to be L, the distance between the left end face of the second retainer 13 and the inner end face of the second gland 17 is set to be S, the distance between the left end face of the first inner ring 1 and the right end face of the push plate seat 7 is set to be M, the distance between the left end face of the limiting sleeve 32 and the inner end face of the sliding seat 22 is set to be D, and the structural size of the coupler meets the requirements that S is larger than L, M is larger than L.

The pump 36 of the present invention is connected to a motor 38 by a rzeppa universal coupling 37. When the pump 36 needs power disconnection, hydraulic oil is injected into the hydraulic interface seat, the hydraulic oil pushes the sliding seat 22 and the push rod 16 to compress the spring 19 and push the push plate seat 7 and the push plate 11 together, the push plate 11 pushes the first outer ring 6 and the second outer ring 12 to move right simultaneously, so that the steel ball 5 enters the raceway of the first outer ring 6, and the distance of the right movement of the first outer ring 6 and the second outer ring 12 is controlled by the limit sleeve 32. When the pump 36 needs to work again, the hydraulic oil is unloaded, the spring 19 in a compressed state drives the outer ring I6, the outer ring II 12, the sliding seat 22 and the like to return to the original positions, the steel ball I5 enters the axial channel of the outer ring I6, and the power is connected again.