AU2018282325B1

AU2018282325B1 - Clutch device applicable to multi-well oil pumping machine

Info

Publication number: AU2018282325B1
Application number: AU2018282325A
Authority: AU
Inventors: Dezhi Li; Yancong Liu; Zhibin Liu; Baojie Wang; Xiaoli Yin; Jixiang Yue; Wenke ZHANG
Original assignee: Shengli College China University of Petroleum
Current assignee: Shengli College China University of Petroleum
Priority date: 2018-01-24
Filing date: 2018-12-19
Publication date: 2019-05-30
Anticipated expiration: 2038-12-19
Also published as: CN108302132B; CN108302132A

Abstract

Abstract The invention discloses a clutch device applicable to a multi-well oil pumping machine. The clutch device includes a shaft, and an idle gear, a clutch gear, a first thrust bearing, a hydraulic disc, a second thrust bearing, a clutch sheet inner gear, a clutch sheet outer gear and a rolling bearing through which the shaft is disposed sequentially; the first thrust bearing and the second thrust bearing are symmetrically installed on two sides of the hydraulic disc; the clutch gear is engaged with the clutch sheet inner gear; the clutch gear is engaged with the idle gear; and the clutch sheet outer gear is engaged with the clutch sheet inner gear. The invention has the beneficial effects that when one of the oil pumping machines is in failure, the clutch device starts to work, so that the clutch sheet inner gear generates axial displacement to be disengaged for rapid cut-off of power.

Description

CLUTCH DEVICE APPLICABLE TO MULTI-WELL OIL PUMPING

MACHINE

Technical Field [0001] The present disclosure relates to the technical field of oil exploitation, and in particular to a clutch device applicable to a multi-well oil pumping machine.

Background Art [0002] A cluster well multi-well oil pumping system consists of a plurality of oil pumping machines. If one or more oil pumping machines fail during operation, the oil pumping machines need to be shut down for maintenance. In the prior art, a clutch of the oil pumping machine cannot be interrupted rapidly in the event of a failure, which will affect the smooth operation of the oil pumping machine and increase the maintenance cost.

Summary [0003] In order to solve the problems above, an object of the disclosure is to provide a clutch device applicable to a multi-well oil pumping machine for rapid cut-off of power.

[0004] In one aspect, there is provided a clutch device applicable to a multi-well oil pumping machine. The clutch device includes a shaft, and an idle gear, a clutch gear, a first thrust bearing, a hydraulic disc, a second thrust bearing, an inner clutch gear, an outer clutch gear and a rolling bearing through which the shaft is disposed sequentially;

[0005] the first thrust bearing and the second thrust bearing are symmetrically installed on two sides of the hydraulic disc;

[0006] the clutch gear is engaged with the inner clutch gear;

[0007] the clutch gear is engaged with the idle gear;

[0008] the outer clutch gear is engaged with the inner clutch gear;

wherein the hydraulic disc comprises a supporting frame and an annular hydraulic cylinder; the annular hydraulic cylinder is fixed to an upper end of the supporting frame; a lower end of the supporting frame is fixed to the bottom of a transmission box; and at least one spring; one end of the or each spring is fixed to a surface of the hydraulic disc; and the other end of the spring is connected with the second thrust bearing; and wherein the inner clutch gear is biased axially toward engagement with the outer clutch gear by the or each spring, and the hydraulic disc operates to overcome the bias of the or each spring to disengage the inner clutch gear from the

2018282325 17 Apr 2019 outer clutch gear.

[0009] In one form, a spur gear is disposed at an inner ring of the clutch gear; an internal spur gear is disposed at an inner ring of the inner clutch gear; and the spur gear of the clutch gear is engaged with the internal spur gear of the inner clutch gear.

[0010] In one form, a splined friction ring is disposed at a side of the clutch gear; a splined friction ring is disposed at a side, facing the clutch gear, of the idle gear; and the splined friction ring at the side of the clutch gear is engaged with the splined friction ring at the side of the idle gear.

[0011] In one form, a splined friction ring is disposed at a side of the inner clutch gear; a splined friction ring is disposed at a side, facing the inner clutch gear, of the outer clutch gear; and the splined friction ring at the side of the outer clutch gear is engaged with the splined friction ring at the side of the inner clutch gear.

[0012] In one form, the inner clutch gear consists of an inner clutch gear main body, an inner plate and a plurality of first bolts, and the inner plate is fixed to a surface of the inner clutch gear main body by the plurality of first bolts.

[0013] In one form, the hydraulic disc includes two hydraulic oil pipes disposed outside the annular hydraulic cylinder; two oil liquid loops disposed inside the annular hydraulic cylinder; six hydraulic grooves and six pin holes are formed in a surface of the annular hydraulic cylinder;

[0014] a sealing ring, a piston and a piston rod are disposed in each hydraulic groove sequentially; one end of the piston rod is connected with the piston; hydraulic cylinder covers are fixed to the hydraulic grooves by second bolts; the six hydraulic grooves, the sealing rings and the pistons in the hydraulic grooves, as well as the hydraulic cylinder covers jointly form six hydraulic cylinders;

[0015] a pressing plate is disposed on the hydraulic cylinder cover; the other end of the piston rod is connected with the pressing plate; the pressing plate is secured to the inner clutch gear by hooking behind the inner plate and abutting against the second thrust bearing;

[0016] a pin is installed in each pin hole; the pin is externally surrounded by the spring.

[0017] In one form, the inner ring of the idle gear is connected with the shaft by a key.

[0018] In one form, the rolling bearing is sleeved externally with a shaft sleeve.

[0019] In one form, the rolling bearing is a deep groove ball bearing.

[0020] The disclosure has the following beneficial effects:

when one of the oil pumping machines is in failure, the clutch device starts to work, so that the inner clutch gear generates axial displacement to be disengaged for rapid cut-off of power;

[0021] the hydraulic disc can make the inner clutch gear run smoothly and be stressed uniformly during the axial movement; and

2018282325 17 Apr 2019 [0022] the six springs perpendicular to the hydraulic disc are provided outside the hydraulic disc, and are in a compressed state; the pins in the springs play effects of supporting the springs, left sides of the springs are connected to the hydraulic disc, and right sides of the springs tightly press the thrust bearing, so that the thrust bearing always has rightward thrust which can prevent a situation that the inner clutch gear moves leftwards to be disengaged under the condition that the hydraulic cylinders do not operate when the gear rotates.

Brief Description of the Drawings [0023] FIG. 1 is an exploded view of a clutch device applicable to a multi-well oil pumping machine described in an example of the disclosure;

[0024] FIG. 2 is a schematic diagram of the assembled clutch device applicable to the multi-well oil pumping machine described in the example of the disclosure;

[0025] FIG. 3 is a sectional view of the clutch device applicable to the multi-well oil pumping machine described in the example of the disclosure;

[0026] FIG. 4 is a partial view of FIG. 3;

[0027] FIG. 5 is an exploded view of an inner clutch gear in the clutch device applicable to the multi-well oil pumping machine described in the example of the disclosure;

[0028] FIG. 6 is an exploded view of a hydraulic disc in the clutch device applicable to the multi-well oil pumping machine described in the example of the disclosure;

[0029] FIG. 7 is a partial view of the hydraulic disc in the clutch device applicable to the multi-well oil pumping machine described in the example of the disclosure;

[0030] FIG. 8 is a schematic diagram of the clutch device applicable to the multi-well oil pumping machine and a transmission box connected thereof described in the example of the disclosure;

[0031] FIG. 9 is a top view of FIG. 8.

Detailed Description [0032] The present disclosure will be further described in detail in combination with specific examples and accompanying drawings.

[0033] Example 1. As shown in FIG. 1 to FIG. 4, a clutch device applicable to a multi-well oil pumping machine in Example 1 includes a shaft 1, and an idle gear 3, a clutch gear 4, a first thrust bearing 5-1, a hydraulic disc 6, a second thrust bearing 5-2, an inner clutch gear 13, an outer clutch gear 14 and a rolling bearing 16 through which the shaft 1 is disposed sequentially. By taking the hydraulic disc 6 as a reference for installation, the first thrust bearing 5-1 and the second thrust bearing 5-2 are symmetrically installed on two sides of the hydraulic disc 6; the

2018282325 17 Apr 2019 clutch gear 4 is engaged with the inner clutch gear 13; the clutch gear 4 is engaged with the idle gear 3; and the outer clutch gear 14 is engaged with the inner clutch gear 13.

[0034] A spur gear is disposed at an inner ring of the clutch gear 4; an internal spur gear is disposed at an inner ring of the inner clutch gear 13; the spur gear of the clutch gear 4 is engaged with the internal spur gear of the inner clutch gear 13 to transmit power; and the inner clutch gear 13 on a right side is driven by the hydraulic disc 6 to generate axial displacement for rapid cut-off of power.

[0035] A splined friction ring is disposed at a side of the clutch gear 4; a splined friction ring is disposed at a side, facing the clutch gear 4, of the idle gear 3; and the splined friction ring at the side of the clutch gear 4 is engaged with the splined friction ring at the side of the idle gear 3.

[0036] A splined friction ring is disposed at a side of the inner clutch gear 13; a splined friction ring is disposed at a side, facing the inner clutch gear 13, of the outer clutch gear 14; and the splined friction ring at the side of the outer clutch gear 14 is engaged with the splined friction ring at the side of the inner clutch gear 13.

[0037] As shown in FIG. 5, the inner clutch gear 13 consists of an inner clutch gear main body 27, an inner plate 11 and a plurality of first bolts 12, and the inner plate 11 is fixed to a surface of the inner clutch gear main body 27 by the plurality of first bolts 12.

[0038] The hydraulic disc 6, as a core component of the clutch device, mainly provides hydraulic power to the clutch device; the hydraulic disc is internally provided with two oil liquid loops; and pistons stretch out or retract by a pressure difference of hydraulic oil at two ends of the pistons of hydraulic cylinders, thereby driving the inner clutch gear and other components to be engaged or disengaged. Particularly, as shown in FIG. 6 and FIG. 7, the hydraulic disc 6 includes a supporting frame 24 and an annular hydraulic cylinder 25; the annular hydraulic cylinder 25 is fixed to an upper end of the supporting frame 24; a lower end of the supporting frame 24 is fixed to the bottom of a transmission box; in order to make the inner clutch gear run smoothly and be stressed uniformly during axial movement, two hydraulic oil pipes 20 are disposed outside the annular hydraulic cylinder 25; two oil liquid loops 21 are disposed inside the annular hydraulic cylinder 25; six hydraulic grooves and six pin holes 23 are formed in a surface of the annular hydraulic cylinder 25; a sealing ring 8, a piston 7 and a piston rod 26 are disposed in each hydraulic groove 22 sequentially; one end of the piston rod 26 is connected with the piston 7; hydraulic cylinder covers 10 are fixed to the hydraulic grooves 22 by second bolts 9; the six hydraulic grooves 22, the sealing rings 8 and the pistons 7 in the hydraulic grooves 22, as well as the hydraulic cylinder covers 10 jointly form six hydraulic cylinders; a pressing plate 17 is disposed on the hydraulic cylinder cover 10; the other end of the piston rod 26 is connected with the pressing plate 17; the

2018282325 17 Apr 2019 pressing plate 17 is secured to the inner clutch gear 13 by hooking behind the inner plate 11 and abutting against the second thrust bearing 5-2, thereby transmitting the movement of the piston rods to the inner clutch gear 13 and other components to be engaged or disengaged; a pin 19 is installed in each pin hole 23; the pin 19 is externally surrounded by a spring 18; one end of the spring 18 is fixed to a surface of the hydraulic disc 6; and the other end of the spring 18 is connected with the second thrust bearing 5-2.

[0039] The springs 18 are all perpendicular to the hydraulic disc 6; the springs are in a compressed state; the pins 19 in the springs 18 play effects of supporting the springs 18; left sides of the springs 18 are connected to the hydraulic disc 6; right sides of the springs 18 tightly press the second thrust bearing 5-2, so that the second thrust bearing 5-2 always has rightward thrust which can prevent a situation that the inner clutch gear moves leftwards to be disengaged under the condition that the hydraulic cylinders do not operate when the gear rotates.

[0040] Where, the inner ring of the idler gear 3 is connected with the shaft 1 by a key 2; the rolling bearing 16 is sleeved externally with a shaft sleeve 15; and the rolling bearing 16 is a deep groove ball bearing.

[0041] The clutch device of the present disclosure is installed in the transmission box of the oil pumping machine when in specific use; as shown in FIG. 8 and FIG. 9, a driving wheel 28 is engaged with a first intermediate wheel 29; the first intermediate wheel 29 is engaged with the outer clutch gear 14; a driven wheel 30 is engaged with a second intermediate wheel 31; and the second intermediate wheel 31 is engaged with the clutch gear 4. The operating principle of the clutch device of the disclosure is as follows:

[0042] (1) normal operation [0043] during normal rotation, the clutch device does not work, the outer clutch gear 14 drives the inner clutch gear 13 by engagement of the gear at the side, the inner clutch gear 13 drives the clutch gear 4 to rotate by the internal spur gear at the inner ring, and the clutch gear 4 drives the idle gear 3 to rotate by engagement of the gear at the side, thereby realizing the transmission of power.

[0044] (2) failure [0045] when one oil pumping machine fails, the clutch device located in the transmission box of this oil pumping machine starts to work; a hydraulic system connected with the hydraulic oil pipes begins to be started; the clutch device is fed with oil through one hydraulic oil pipe connected outside the hydraulic disc 6; the other hydraulic oil pipe discharges oil; under the action of an oil pressure difference, the pistons 7 of the hydraulic cylinders retract to drive the piston rods 26 to return into the hydraulic cylinders; at this time, the pressing plate 17 connected to right end of the

2018282325 17 Apr 2019 piston rod 26 move leftward; the inner clutch gear 13 is driven to move leftward by the inner gear 11, so that the inner clutch gear 13 is disengaged from the outer clutch gear 14; at this time, the driving wheel 28 of the transmission box and the outer clutch gear 14 still rotate; the inner clutch gear 13, the clutch gear 4 and the idle gear 3 in the clutch device stop rotating; the driven wheel 30 in the transmission box stops rotating; and the power of this oil pumping machine is cut off, so that the oil pumping machine stops operating.

[0046] (3) operation starting [0047] after the troubleshooting without errors, the hydraulic system starts to operate in a way on the contrary to disengagement movement; at this time, one of the hydraulic oil pipes discharges the oil, and the other one hydraulic oil pipe is fed with oil; under the action of the oil liquid difference, the pistons 7 of the hydraulic cylinders drive the piston rods 26 to rightward stretch out; the pressing plate 17 connected to the right end of the piston rods 26 pushes the second thrust bearing 5-2 rightward; the springs 18 are kept in the compressed state all the time; the inner clutch gear 13 enters to be engaged under pushing action of the pressing plate 17 and the springs 18 acting on the second thrust bearing; at this time, the outer clutch gear 14, the inner clutch gear 13, the clutch gear 4 and the idle gear 3 are connected and communicated; and the oil pumping machine starts to operate.

[0048] Throughout the specification and the claims that follow, unless the context requires otherwise, the words “comprise” and “include” and variations such as “comprising” and “including” will be understood to imply the inclusion of a stated integer or group of integers, but not the exclusion of any other integer or group of integers.

[0049] The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge.

[0050] It will be appreciated by those skilled in the art that the invention is not restricted in its use to the particular application described. Neither is the present invention restricted in its preferred embodiment with regard to the particular elements and/or features described or depicted herein. It will be appreciated that the invention is not limited to the embodiment or embodiments disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the scope of the invention as set forth and defined by the following claims.

Claims

Claims

1. A clutch device applicable to a multi-well oil pumping machine, the clutch device comprising a shaft, an idle gear, a clutch gear, a first thrust bearing, a hydraulic disc, a second thrust bearing, an inner clutch gear, an outer clutch gear and a rolling bearing through which the shaft is disposed sequentially;

wherein the first thrust bearing and the second thrust bearing are symmetrically installed on two sides of the hydraulic disc;

the clutch gear is engaged with the inner clutch gear;

the clutch gear is engaged with the idle gear;

the outer clutch gear is engaged with the inner clutch gear;

wherein the hydraulic disc comprises a supporting frame and an annular hydraulic cylinder; the annular hydraulic cylinder is fixed to an upper end of the supporting frame; a lower end of the supporting frame is fixed to the bottom of a transmission box; and at least one spring, where one end of the spring is fixed to a surface of the hydraulic disc, and the other end of the spring is connected with the second thrust bearing; and wherein the inner clutch gear is biased axially toward engagement with the outer clutch gear by the or each spring, and the hydraulic disc operates to overcome the bias of the or each spring to disengage the inner clutch gear from the outer clutch gear.
2. The clutch device of claim 1, wherein a spur gear is disposed at an inner ring of the clutch gear; an internal spur gear is disposed at an inner ring of the inner clutch gear; and the spur gear of the clutch gear is engaged with the internal spur gear of the inner clutch gear.
3. The clutch device as in either of the preceding claims, wherein a splined friction ring is disposed at a side of the clutch gear; a splined friction ring is disposed at a side, facing the clutch gear, of the idle gear; and the splined friction ring at the side of the clutch gear is engaged with the splined friction ring at the side of the idle gear.
4. The clutch device as in any one of the preceding claims, wherein a splined friction ring is disposed at a side of the inner clutch gear; a splined friction ring is disposed at a side, facing the inner clutch gear, of the outer clutch gear; and the splined friction ring at the side of the outer clutch gear is engaged with the splined friction ring at the side of the inner clutch gear.
5. The clutch device as in any one of the preceding claims, wherein the inner clutch gear consists of an inner clutch gear main body, an inner plate and a plurality of first bolts, and the inner plate is fixed to a surface of the inner clutch gear main body by the plurality of first bolts.
6. The clutch device as in any one of the preceding claims, wherein the hydraulic disc further comprises

2018282325 17 Apr 2019 two hydraulic oil pipes disposed outside the annular hydraulic cylinder; two oil liquid loops disposed inside the annular hydraulic cylinder; six hydraulic grooves and six pin holes are formed in a surface of the annular hydraulic cylinder;

a sealing ring, a piston and a piston rod are disposed in each hydraulic groove sequentially; one end of the piston rod is connected with the piston; hydraulic cylinder covers are fixed to the hydraulic grooves by second bolts; the six hydraulic grooves, the sealing rings and the pistons in the hydraulic grooves, as well as the hydraulic cylinder covers jointly form six hydraulic cylinders;

a pressing plate is disposed on the hydraulic cylinder cover; the other end of the piston rod is connected with the pressing plate; the pressing plate is secured to the inner clutch gear by hooking behind the inner plate and abutting against the second thrust bearing;

a pin is installed in each pin hole; the pin is externally surrounded by the spring.
7. The clutch device as in any one of the preceding claims, wherein the inner ring of the idle gear is connected with the shaft by a key.
8. The clutch device as in any one of the preceding claims, wherein the rolling bearing is sleeved externally with a shaft sleeve.
9. The clutch device as in any one of the preceding claims, wherein the rolling bearing is a deep groove ball bearing.