CN206398037U - Fluid torque-converter with pump impeller clutch - Google Patents

Abstract

The utility model discloses a hydraulic torque converter with a pump wheel clutch. In order to overcome the problem that the hydraulic torque converter cannot meet the ideal matching under all working conditions when the hydraulic torque converter and the engine work together, the hydraulic torque converter with the pump wheel clutch Including hydraulic torque converter and pump wheel clutch; the input shaft and output shaft are horizontally coaxially placed, the cover wheel is fixed on the right end of the input shaft, the cover wheel is set on the turbine seat through cylindrical roller bearings, and the turbine seat is set on the left end of the output shaft It is connected by spline pair, the guide wheel seat is set on the output shaft, the right end of the guide wheel seat is connected with the output shaft through the No. 2 deep groove ball bearing, and the left end surface of the guide wheel seat is in contact with the right end surface of the turbine seat through the thrust bearing to form a rotational connection; The clutch casing is set on the guide wheel seat through deep groove ball bearings, and is fixed on the right end of the cover wheel with bolts. The active friction plate is installed on the clutch casing as a spline connection, and the driven friction plate is set on the torsional shock absorbing part as a spline. Auxiliary connection, torsional damping parts are fixedly connected with the pump wheel by bolts.

Description

Torque converter with pump clutch

technical field

The utility model relates to a hydraulic torque converter, more precisely, the utility model relates to a hydraulic torque converter with a pump wheel clutch applied to a wheel loader.

Background technique

Wheel loader is one of the widely used shovel transport machinery in engineering construction. In order to adapt to the complex and changeable working conditions of the loader, a hydraulic torque converter is usually installed between the engine and the gearbox. The matching performance of the hydraulic torque converter and the engine determines the power and fuel economy of the loader. However, the currently widely used loader hydraulic torque converter cannot meet the ideal matching performance requirements under all working conditions when it works together with the engine.

The hydraulic torque converter with pump wheel clutch can automatically adjust the common working point of the engine and the torque converter. The key component to realize this function is the pump wheel clutch. The pump wheel clutch is a slip clutch. It is called the pump wheel clutch, which is the pump wheel of the hydraulic torque converter. The main function of the pump wheel clutch is to adjust the speed and torque of the hydraulic torque converter pump wheel. For a given torque converter, the torque absorbed by the torque converter is proportional to the square of the speed of the pump wheel. By controlling the engagement pressure of the pump wheel clutch, the pump wheel clutch can work in a slipping state. Since the pump wheel clutch slips , so that the pump wheel has a different speed, thus changing its input torque. In the case of constant engine power, adjust the engagement degree of the pump wheel clutch according to needs, and make full use of the maximum effective power of the engine, so that the engine and hydraulic pump can work at a higher speed, which is beneficial to the working device (bucket) Rapid response to improve engineering efficiency. In addition, the pump wheel clutch can also effectively prevent the tire from slipping.

The hydraulic torque converter with pump wheel clutch is a combined product of hydraulic transmission and fluid viscous transmission. Although both in the field of hydraulic transmission and the field of hydroviscous transmission have reached a higher level at home and abroad, there are very few products that perfectly combine the two. Looking at the research status of the hydraulic torque converter pump wheel clutch at home and abroad, only the 988H, 994H and other large-tonnage series loaders produced by Caterpillar in the United States have been successfully applied, and it has been proved by practice that the installation of the pump wheel clutch can effectively Prevent tire slip and wear, improve work efficiency and engine fuel economy. Domestic research on the application of the pump wheel clutch in loaders is still in a blank stage, and few scholars and enterprises have studied it.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the problem that the hydraulic torque converter cannot meet the ideal matching under all working conditions when the hydraulic torque converter and the engine work together, and provides a hydraulic torque converter with a pump wheel clutch.

In order to solve the above technical problems, the utility model is realized by adopting the following technical scheme: the hydraulic torque converter with pump wheel clutch includes a hydraulic torque converter and a pump wheel clutch;

The hydraulic torque converter includes an input shaft, a No. 1 cylindrical roller bearing, a cover wheel, a pump wheel, a turbine seat, a No. 2 cylindrical roller bearing, a guide wheel seat, an output shaft, a No. 2 deep groove ball bearing and Thrust bearings.

The pump wheel clutch includes a baffle plate, a clutch housing, an oil pump drive gear, a No. 3 deep groove ball bearing and a torsional damping component; wherein: the torsional damping component includes two driven disc hubs (30) with the same structure;

The input shaft and the output shaft are coaxially placed on the left and right sides, and the cover wheel is fixed on the right end of the input shaft by bolts. The cover wheel is mounted on the turbine seat through the No. The left end of the shaft is connected by a spline pair, the guide wheel seat is set on the output shaft, the right end of the guide wheel seat is connected to the output shaft through the No. 2 deep groove ball bearing, the left end surface of the guide wheel seat is connected to the right end of the turbine seat through a thrust bearing Surface-to-surface contact is a rotational connection.

The torsional damping part is set on the guide wheel seat on the right side of the cover wheel. The drive gear of the oil pump and the guide wheel seat are rotationally connected by No. 2 cylindrical roller bearings. The center hole of the clutch housing is set on the guide wheel seat through a deep groove ball bearing. Above; the cover wheel, the baffle plate and the clutch housing are sequentially contacted and connected; the torsion damping part is fixed on the right end surface of the through hole wall of the pump wheel center through two driven disc hubs with the same structure by bolts.

The hydraulic torque converter described in the technical solution also includes a shaft end baffle, a turbine, a guide wheel, a guide wheel connecting frame, a No. 1 deep groove ball bearing, an end cover, an oil seal (and shaft end bolts; the turbine adopts Bolts are fixedly installed on the flange plate at the right end of the turbine seat, and the guide wheel is installed on the guide wheel connecting frame on the right side of the turbine seat. The guide wheel and the guide wheel connecting frame (7) are connected by spline pairs, and the guide wheel connecting frame Set on the guide wheel seat, the guide wheel connecting frame and the guide wheel seat are connected by splines, the pump wheel adopts No. 1 deep groove ball bearing installed on the guide wheel seat on the right side of the guide wheel connecting frame for rotational connection, the shaft The end baffle is fixed on the right end surface of the output shaft by shaft end bolts. The right end surface of the shaft section baffle is in contact with the left end surface of the turbine seat. The right end surface of the guide wheel seat is coaxially provided with an end cover. The left end surface is in contact with the right end surface of the guide wheel seat, and is fixed on the right end surface of the guide wheel seat by countersunk bolts, and an oil seal is installed between the end cover and the output shaft.

In the technical solution, the pump wheel clutch also includes 3 active friction plates with the same structure, 2 driven friction plates and pistons with the same structure; Shock spring; one end of the piston is installed in the piston cylinder on the clutch housing, and three active friction plates with the same structure and two driven friction plates with the same structure are installed alternately between the piston and the baffle, and the three structures are the same The periphery of the active friction plate and the inner wall of the clutch housing are toothed and connected, and the inner hole walls of the two driven friction plates with the same structure are toothed and connected with the periphery of the transmission disc;

Two driven disc hubs with the same structure are installed on both sides of the central through hole of the transmission disc, and a friction sleeve and a positioning disc are installed between the two driven disc hubs with the same structure and in the center hole of the transmission disc. On the disk, there is a transition fit between the center hole of the transmission disk and the friction sleeve, and an interference fit between the friction sleeve and the positioning disk. The two driven disk hubs with the same structure are aligned with the four annular through holes on the transmission disk. 4 damping springs with the same structure are installed in 4 aligned annular through-holes on the 2 driven disc hubs with the same structure and the transmission disc.

In the technical proposal, the transmission disc is a ring-shaped gear-type structural part. The cross section of the transmission disc is T-shaped. The outer cylindrical surface of the transmission disc is evenly arranged with gear teeth along the axial direction. The center of the transmission disc is provided with a The central through hole of the friction sleeve is installed, and four annular through holes with the same structure for installing the shock absorbing spring are uniformly arranged on the web around the central through hole.

The piston described in the technical solution is composed of two coaxially arranged left and right rings with different rectangular cross-sections. The axial cross-section of the piston is in a convex shape with upper and lower symmetry; The inner radius and outer radius of the active friction plate are the same as the inner and outer radii of the effective contact surface of the active friction plate respectively; the right end ring body of the piston and the piston cylinder on the clutch housing form a moving pair, and the left end ring body of the piston and the right end ring body There is an undercut at the connection.

In the technical solution, the turbine seat is a stepped disc-shaped structure with a large right side and a small left side. The left end of the turbine seat is the bearing section with the smallest diameter for installing cylindrical roller bearings. The right end of the bearing section is coaxially connected with a bearing section with a diameter larger than that of the bearing section. The shoulder section of the shaft, the joint of the two forms a positioning shoulder, and the right end of the shoulder section is coaxially connected with a flange with the largest diameter. There are 10 axial bolt through holes evenly arranged, the center of the turbine seat is provided with a central through hole, the hole wall of the central through hole is evenly provided with internal spline grooves, and the right end surface of the central through hole is provided with a Bearing bores for thrust bearings.

In the technical solution, the guide wheel seat is a cylindrical shaft sleeve structure, and the center of the guide wheel seat is provided with a central through hole for installing the output shaft, and the right end of the central through hole is coaxially connected with a user with a diameter larger than the central through hole. It is used to install the sealing groove of the bearing shaft section of the output shaft. A bearing hole with a diameter larger than the sealing groove is coaxially connected to the right end of the sealing groove for installing deep groove ball bearings. On the right end of the bearing hole and the sealing groove The connection is provided with a shoulder for positioning the deep groove ball bearing; the outer contour of the guide wheel seat is in the shape of a stepped shaft, and the leftmost end of the spline shaft is the spline shaft segment with the smallest diameter. Install the annular boss of the thrust bearing. The right end of the spline shaft section is coaxially connected with the No. 1 bearing section with a diameter larger than the spline shaft section for installing deep groove ball bearings. The connection between the two is provided with an overtravel groove; the right end of the No. 1 bearing section is coaxially connected with the No. 2 bearing section for installing deep groove ball bearings, and the connection between the two is provided with an overrunning groove, and forms a positioning shoulder; the right end of the No. 2 bearing section is the same as The shaft is connected with a sealed shaft section whose diameter is larger than that of the No. 2 bearing section. An overtravel groove is provided at the connection between the sealed shaft section and the No. 2 bearing section, and a positioning shoulder is formed. The left end of the sealed shaft section is provided with two for installation. Annular groove of the sealing ring; the right end of the sealing section is coaxially connected with the No. 3 bearing section for installing the No. 2 cylindrical roller bearing, and a circular annular groove for installing the circlip is provided at the left end of the No. 3 bearing section , the right end of the No. 3 bearing section is connected to the oil passage shaft section with the largest diameter through a shaft shoulder, and a clutch oil supply port and a torque converter oil inlet are arranged radially on the outer cylindrical surface of the oil passage shaft section and a torque converter oil outlet; the right end of the shaft section of the oil passage is coaxially connected with a fixed shaft section with a diameter smaller than the shaft section of the oil passage for connecting the frame; between the shaft section of the oil passage, the sealing shaft section and the two The No. 1 oil passage for supplying oil to the clutch is arranged axially on the guide wheel seat between them, and there is a No. No. 2 oil passage for torque converter oil supply; 8 threaded blind holes for installing bolts are uniformly arranged on the circumference of the right end surface of the guide wheel seat.

In the technical solution, the output shaft is a stepped shaft structure, the leftmost end of the output shaft is a spline shaft section, and a threaded blind hole is arranged in the center of the left end surface along the axial direction; the right end of the spline shaft section is connected coaxially There is a shaft section with a diameter smaller than the spline shaft section, and the two are connected by a conical surface; the right end of the shaft section is coaxially connected with a bearing shaft section with a diameter larger than the shaft section, and the two are connected by a torus surface. An annular groove for installing an O-ring seal is provided on the outer cylindrical surface of the left end of the bearing shaft section; the right end of the bearing shaft end is coaxially connected with a sealing shaft section with a diameter larger than the bearing shaft section, and the connection between the two A positioning shaft shoulder is formed; the right end of the sealing shaft section is coaxially connected with a spline shaft section whose diameter is smaller than that of the sealing shaft section, and an overtravel groove is arranged at the connection between the two.

The driven disc hub described in the technical solution is a ring-like plate-type structure, and the center of the driven disc hub is provided with a central through hole for installing the guide wheel seat, and four structures are evenly arranged around the driven disc hub. The same annular through hole for installing the shock absorbing spring, the radial dimension of the annular through hole is smaller than the diameter of the shock absorbing spring, and 8 holes are evenly arranged on the plate surface between the annular through hole and the central hole for installing the shock absorbing spring. Through holes for fastening bolts.

The clutch housing described in the technical solution is a shell-type structural member with complex cross-section manufactured by casting, including a disc-shaped wall plate arranged perpendicular to the axis, and a radially penetrating Cylindrical oil passage, the upper end of the cylindrical oil passage is provided with threaded blind holes for installing bolt plugs; the center of the disc-shaped wall plate is provided with a central through hole for fitting the guide wheel seat; the right end of the disc-shaped wall plate A support sleeve for installing the oil pump drive gear is connected coaxially around the center through hole of the cylinder, and 16 threaded through holes for installing fastening bolts are evenly arranged on the circumference of the right end of the support sleeve; the left end surface of the disc-shaped wall plate There is a ring-shaped protrusion coaxially connected to the periphery of the central through hole, and the left end of the inner surface of the ring-shaped protrusion is provided with a bearing hole for installing a No. 3 deep groove ball bearing, and the left end of the bearing hole is provided with a ring for installing circular groove; the outer edge of the left end of the disc-shaped wall is coaxially connected with a cylindrical wall, and the outer cylindrical surface of the right end of the cylindrical wall is on the same surface as the outer cylindrical surface of the disc-shaped wall. On the cylindrical surface, the inner cylindrical surface of the right end of the cylindrical wall plate is transitionally connected with the left end surface of the disc-shaped wall plate through arc chamfering; the outer cylindrical surface of the left end of the cylindrical wall plate is coaxially connected with a circular ring Plate, the right end surface of the circular fixed plate and the outer cylindrical surface of the cylindrical wall plate are transitionally connected by arc chamfering, the left end surface of the circular fixed plate and the left end surface of the cylindrical wall plate are on the same plane, and the circular fixed plate There are 18 axial through holes for set bolts evenly arranged on the circumference of the plate; the inner cylindrical surface at the left end of the cylindrical wall plate is coaxially connected with an inner spline hole, and the left end surface of the inner spline hole is connected with the cylinder The left end face of the shaped wall plate is on the same plane; the right end face of the inner spline hole and the inner cylindrical surface of the cylindrical wall plate are connected through a circular chamfer transition; between the cylindrical wall plate and the ring-shaped protrusion The left end surface of the disc-shaped wall plate is coaxially provided with a ring-shaped boss, and the connection between the ring-shaped boss and the disc-shaped wall plate is connected through a circular arc chamfer; at the left end of the ring-shaped boss There is a piston cylinder for installing the piston. The piston cylinder is in the shape of a circular groove. On the bottom surface of the right end of the piston cylinder, there is an oil hole for communicating with the cylindrical oil passage. On the inner wall of the piston cylinder, there is a hole for installation. The circular groove of the O-ring.

Compared with the prior art, the beneficial effects of the utility model are:

1. The hydraulic torque converter with the pump wheel clutch described in the utility model can make full use of the maximum effective power of the engine when the hydraulic torque converter is matched with the engine by adding the pump wheel clutch, which improves the engineering efficiency. work efficiency.

2. The hydraulic torque converter with the pump wheel clutch described in the utility model is equipped with a torsional damping device, which solves the shock vibration problem of the pump wheel clutch in the prior art during the coupling process, and makes the pump wheel clutch The combination process is more stable.

3. The hydraulic torque converter with a pump wheel clutch described in the utility model has a simple structure, a reasonable power transmission scheme, and reduces the axial size and mass on the basis of fully meeting the working requirements.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a full sectional view on the front view of the hydraulic torque converter structure with the pump wheel clutch described in the utility model;

Fig. 2 is a cross-sectional view on the front view of the structure of the cover wheel adopted in the hydraulic torque converter with the pump wheel clutch described in the utility model;

Fig. 3 is the front view of the structure of the output shaft adopted in the hydraulic torque converter with the pump wheel clutch described in the present invention;

Fig. 4 is a full sectional view of the guide wheel seat used in the hydraulic torque converter with the pump wheel clutch described in the present invention;

Fig. 5 is a cross-sectional view of the position of the oil port of the guide wheel seat at A-A in Fig. 4;

Fig. 6 is a full cross-sectional view on the front view of the structural composition of the pump wheel clutch assembly in the hydraulic torque converter with the pump wheel clutch described in the utility model;

Fig. 7 is a full cross-sectional view on the front view of the structure of the torsional damping assembly in the hydraulic torque converter with pump wheel clutch described in the present invention;

Fig. 8 is a front view of the transmission plate and the damping spring in the torsional damping assembly of the hydraulic torque converter with pump wheel clutch described in the present invention;

Fig. 9 is a front view of the driven disc hub in the torsional damping assembly of the hydraulic torque converter with pump wheel clutch described in the present invention;

Fig. 10 is a front view of the active friction plate in the pump wheel clutch assembly of the hydraulic torque converter with the pump wheel clutch described in the present invention;

In the figure: 1. Input shaft, 2. Shaft end baffle, 3. No. 1 cylindrical roller bearing, 4. Cover wheel, 5. Turbine wheel, 6. Guide wheel, 7. Guide wheel connecting frame, 8. Pump wheel, 9. Turbine seat, 10. Deep groove ball bearing, 11. Baffle plate, 12. Driving friction plate, 13. Driven friction plate, 14. Piston, 15. Transmission disc, 16. Clutch housing, 17. Oil pump driving gear, 18. No. 2 cylinder Roller bearing, 19. Clutch oil supply hole, 20. Guide wheel seat, 21. End cover, 22 Output shaft, 23. Oil seal, 24. Deep groove ball bearing, 25. Sealing bolt, 26. Torque converter oil inlet , 27. Deep groove ball bearing, 28. Positioning plate, 29. Friction sleeve, 30. Driven disc hub, 31. Damping spring, 32. Shaft end bolt, 33. Torque converter oil outlet, 34. Thrust bearing .

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail:

Referring to Fig. 1, the hydraulic torque converter with the pump wheel clutch described in the utility model is mainly composed of two parts: the hydraulic torque converter and the pump wheel clutch.

The hydraulic torque converter includes an input shaft 1, a shaft end baffle 2, a No. 1 cylindrical roller bearing 3, a cover wheel 4, a turbine 5, a guide wheel 6, a guide wheel connecting frame 7, a pump wheel 8, a turbine Seat 9, No. 1 deep groove ball bearing 10, No. 2 cylindrical roller bearing 18, guide wheel seat 20, end cover 21, output shaft 22, oil seal 23, No. 2 deep groove ball bearing 24, sealing bolt 25, No. 3 deep Groove ball bearing 27 and thrust bearing 34;

Referring to Fig. 1 , the turbine 5, the guide wheel 6, the guide wheel connecting frame 7, and the pump wheel 8 are all traditional structural parts, and will not be repeated here.

Referring to Figure 1, the input shaft 1 is a stepped shaft structure with a large right side and a small left side, the right end of the input shaft 1 is the flange shaft section with the largest diameter, and the left end of the flange shaft section is coaxially connected with a The shaft section of the blue shaft section is connected through a circular arc surface transition. The left end of the shaft section is coaxially connected with a bearing shaft section with a diameter smaller than the shaft section. The joint between the two is provided with an undercut groove and formed In order to locate the shaft shoulder, the left end of the bearing shaft section is coaxially connected with a spline shaft section with a diameter smaller than the bearing shaft section, and an overtravel groove is provided at the connection between the two; in order to avoid interference between the input shaft 1 and the shaft end bolt 32, the The center of the right end surface of the flange shaft section is provided with a pit with a section shape of isosceles trapezoid; on the right end surface of the flange shaft section around the pit, there is coaxially provided with a circular ring shape with a rectangular cross section. The positioning boss is used to install the cover wheel 4; through holes for installing bolts are uniformly arranged on the circumference of the flange shaft section, and 8 through holes are arranged in the embodiment.

Referring to Fig. 2, the cover wheel 4 is a disc-shaped shell structure made by casting, the right end of the cover wheel 4 is open, and the right end face of the opening is uniformly arranged along the axial direction for installing bolts. Threaded blind holes, 18 threaded blind holes are provided in the embodiment; the left side wall of the cover wheel 4 is provided with a boss that protrudes to the left, and the boss and the left side wall are smoothly transitioned through a circular arc surface. The center of the center is provided with a central through hole for installing the positioning boss in the input shaft 1, and a bearing hole for installing No. 1 cylindrical roller bearing 3 with a diameter larger than the diameter of the central through hole is provided at the right end of the central through hole. A positioning shoulder is formed at the joint of the boss; 8 threaded blind holes for installing bolts are evenly arranged on the left end face of the boss along the axial direction.

Referring to Fig. 3, the output shaft 22 is a stepped shaft structure, the leftmost end of the output shaft 22 is a spline shaft segment, and a threaded blind hole coaxial with the output shaft is provided at the center of the left end face; The right end of the spline shaft section is coaxially connected with a shaft section with a diameter smaller than the spline shaft section, and the connection between the two is transitioned through a conical surface; the right end of the shaft section is coaxially connected with a bearing shaft section with a diameter larger than the shaft section , the connection between the two is connected through a torus surface transition, and an annular groove for installing an O-shaped sealing ring is provided on the outer cylindrical surface of the bearing shaft section near the left end; the right end of the bearing shaft end is coaxially connected with The sealing shaft section with a diameter larger than the bearing shaft section forms a positioning shoulder at the connection between the two; the right end of the sealing shaft section is coaxially connected with a spline shaft section with a diameter smaller than the sealing shaft section, and the connection between the two is provided with Overrun slot.

Referring to Fig. 1, the end cover 21 is a disc-like plate structure, a central through hole for fitting the output shaft 22 is provided at the center of the end cover 21, and a central through hole is provided on the inner wall of the left end of the central through hole. The circular groove for installing the oil seal 23 is coaxially provided with a ring-shaped boss on the left end surface of the outer edge of the end cover 21, and 8 are evenly distributed on the circumference of the right end surface of the end cover 21 for Countersunk through holes for mounting countersunk bolts.

Referring to Fig. 4 and Fig. 5, the guide wheel seat 20 is a cylindrical bushing structure with a complex cross-sectional shape, and the center of the guide wheel seat 20 is provided with a central through hole for fitting the output shaft 22. The right end of the through hole is coaxially connected with a sealing groove with a diameter larger than the central through hole for fitting the shaft section of the output shaft 22. The cylindrical wall surface of the sealing groove requires high surface quality; the right end of the sealing groove is coaxial A bearing hole with a diameter larger than the sealing groove for fitting the deep groove ball bearing 24 is connected, and a shaft shoulder for positioning the deep groove ball bearing 24 is arranged at the connection between the bearing hole and the right end surface of the sealing groove; the guide wheel seat 20 The outer contour is in the shape of a stepped shaft, the leftmost end of which is the spline shaft section with the smallest diameter, and an annular boss for installing the thrust bearing 34 is arranged on the left end surface of the spline shaft section, and the right end of the spline shaft section is the same as The shaft is connected with the No. 1 bearing section whose diameter is larger than the spline shaft section for installing the deep groove ball bearing 10, and the connection between the two is provided with an overtravel groove; the right end of the No. 1 bearing section is coaxially connected with a section for installing the deep groove ball bearing 10. For the No. 2 bearing section of the ball bearing 27, an overtravel groove is arranged at the connection between the two, and a positioning shoulder is formed; the right end of the No. 2 bearing section is coaxially connected with a sealing shaft section whose diameter is larger than that of the No. 2 bearing section. The connection between the shaft section and the No. 2 bearing section is provided with an overtravel groove, and a positioning shoulder is formed. The left end of the sealed shaft section is provided with two annular grooves for installing the sealing ring; the right end of the sealing section is connected with a The No. 3 bearing section of No. 2 cylindrical roller bearing 18 has a circular groove for installing a circlip on the left end of the No. 3 bearing section. The right end of the No. 3 bearing section is connected with a shaft shoulder with the largest diameter. In the oil passage shaft section, a clutch oil supply port 19, a torque converter oil inlet port 26 and a torque converter oil outlet port 33 are respectively arranged on the outer cylindrical surface of the oil passage shaft section in the radial direction; The right end of the section is coaxially connected with a fixed shaft section with a diameter smaller than the oil passage shaft section for connecting the frame; on the oil passage shaft section, the sealing shaft section and the guide wheel seat between the two, there are axially arranged for The No. 1 oil passage for supplying oil to the clutch is provided with the No. 2 oil passage for supplying oil to the torque converter along the axial direction on the fixed section, the shaft sleeve shaft section and the guide wheel seat between them; the guide wheel seat 8 threaded blind holes for installing bolts are evenly arranged on the circumference of the right end face of 20 .

Referring to Fig. 1, the described turbine seat 9 is a step-shaped disc structure with a large right side and a small left side, the left end of the turbine seat 9 is the bearing segment with the smallest diameter for installing the cylindrical roller bearing 3, and the right end of the bearing segment is the same as The shaft is connected with a shaft shoulder section whose diameter is larger than the bearing section. The joint of the two forms a positioning shaft shoulder. The right end of the shaft shoulder section is coaxially connected with a flange with the largest diameter. The joint between the two is connected through a circular arc surface transition. 10 axial bolt through holes are evenly arranged on the circumference of the flange, and a central through hole is arranged at the center of the turbine seat 9, and internal spline grooves are evenly arranged on the hole wall of the central through hole, and in the central through hole A bearing hole for installing a thrust bearing 34 is provided on the right end face of the shaft.

Referring to Fig. 1, the input shaft 1 of the hydraulic torque converter is installed in the central through hole at the left end of the cover wheel 4 through the circular boss at the right end, and the right end surface of the flange section of the input shaft 1 is connected with the cover wheel 4. The left end face is connected by contact, and is fixedly connected by bolts; the turbine 5, the guide wheel 6 and the pump wheel 8 are coaxially installed in the opening of the right end of the cover wheel 4, the turbine 5 and the pump wheel 8 are installed opposite to each other left and right, and the guide wheel 6 is installed on the Between the turbine 5 and the pump wheel 8, the turbine 5 is installed on the flange at the right end of the turbine seat 9, and the left end surface of the flange of the turbine seat 9 is in contact with the right end surface of the turbine 5, and is fastened by bolts. The turbine seat 9 is installed in the bearing hole of the cover wheel 4 through the No. 1 cylindrical roller bearing 3; the guide wheel 6 is set on the guide wheel connecting frame 7, and the two are connected by a spline pair, and the axial direction is positioned by a circlip; The wheel connecting frame 7 is set on the guide wheel seat 20 through the inner spline hole, and the two are connected by a spline, and the axial direction is positioned by a circlip, and a thrust bearing 34 is arranged between the left end surface of the guide wheel seat 20 and the turbine seat 9 for positioning. No. 1 deep groove ball bearing 10 is used to support the connection between the guide wheel seat 20 and the pump wheel 8; the output shaft 22 is installed in the center through hole of the guide wheel seat 20, and the spline shaft section at the left end of the output shaft 22 is installed on the turbine seat In the spline hole of 9, the two are connected by a spline pair, and a shaft section baffle 2 is arranged on the left side of the turbine seat 9, and the right end surface of the shaft section baffle 2 is in contact with the left end surface of the turbine seat 9. And be fixed on the left end face of output shaft 22 by axle end bolt 32. The right end of the output shaft 22 and the guide wheel seat 20 are supported by No. 2 deep groove ball bearings 24; The right end surface is contact connection, and is fixed on the right end surface of the guide wheel seat 20 by countersunk bolts, and an oil seal 23 is installed between the end cover 21 and the output shaft 22 for blocking external dust.

Referring to Fig. 1, Fig. 6 and Fig. 7, the pump wheel clutch includes a baffle plate 11, three active friction plates 12 with the same structure, two driven friction plates 13 with the same structure, a piston 14, a clutch housing 16, an oil pump drive Gear 17 and torsional damping components;

The torsional damping component includes a transmission disc 15, a positioning disc 28, a friction sleeve 29, two driven disc hubs 30 with the same structure and four damping springs 31 with the same structure.

Referring to Fig. 7, the friction sleeve 29 is a ring-like sleeve-type structural member made of a copper-based alloy material with good wear resistance; the positioning disc 28 is a ring-like plate-type structural member, positioning A center hole is arranged at the center of the disc 28, and eight through holes for installing fastening bolts are uniformly arranged around the center hole.

Referring to Fig. 7 and Fig. 8, described transmission disk 15 is the ring type gear-type structure member, and its cross section is T shape, and the outer cylindrical surface of transmission disk 15 is evenly provided with gear teeth along the axial direction, transmission A central through hole for installing the friction sleeve 29 is provided at the center of the disc 15, and four annular through holes with the same structure for installing the shock absorbing spring 31 are evenly provided on the web around the central through hole.

Referring to Fig. 7 and Fig. 9, the said driven disc hub 30 is a ring type plate structure, the center of the driven disc hub is provided with a central through hole for installing the guide wheel seat 20, and the driven disc hub 30 4 annular through-holes with the same structure are evenly arranged on the periphery of the wall for installing the shock-absorbing spring 31. In order to position the shock-absorbing spring 31, the radial size of the annular through-hole must be smaller than the diameter of the shock-absorbing spring 31. Eight through holes for installing fastening bolts are evenly arranged on the plate surface between the annular through hole and the central hole.

Referring to Fig. 7, the two driven disc hubs 30 with the same structure are arranged in parallel, a positioning disc 28 is installed between the two driven disc hubs 30 with the same structure, and a friction sleeve 29 is set around the positioning disc 28 , between the positioning disc 28 and the driven disc hub 30 is a contact connection, between the positioning disc 28 and the friction sleeve 29 is an interference fit; the friction sleeve 29 is installed in the central through hole of the transmission disc 15, the friction sleeve 29 and the transmission The central through holes of the disk 15 are clearance fit and can rotate with each other; the transmission disk 15 is installed between two driven disk hubs 30 with the same structure, and the transmission disk 15 and the two driven disk hubs 30 with the same structure There is a clearance fit between them, and they can rotate with each other; the four annular through holes with the same structure on the transmission disc 15 are aligned with the annular through holes with the same structure on the two driven disc hubs 30 with the same structure. A damping spring 31 is installed therein.

Referring to Fig. 6, the baffle plate 11 is a ring-like plate structure, a center hole is provided at the center of the baffle plate 11, and a plurality of circular oil passage holes are arranged around the center hole, so that the slip clutch and The side cavities of the hydraulic torque converter communicate with each other; 18 through holes for installing bolts are arranged on the circumference of the baffle plate 11 .

Referring to Figure 6 and Figure 10, the active friction plate 12 is made of paper-based powder metallurgy material with a thickness of 4.4 mm, and 20 radial oil grooves are respectively arranged on both ends of the active friction plate 12, and the oil groove depth is 0.4 mm. mm, the central angle of the oil groove is θ ₁ =6°; the driven friction plate 13 that is the pair with the active friction plate is a light plate made of alloy steel material, with a thickness of 4mm. The effective contact inner radius between the active friction plate and the driven friction plate is R1, and the outer radius is R2, and the size of the radius is designed according to the capacity of the transmitted torque.

Referring to Fig. 6, described piston 14 is made up of two coaxially arranged cross-sections of different rectangles on the left and right sides. The inner and outer radii of the ring body are the same as the inner and outer radii of the effective contact surface of the active friction plate 12 respectively; Higher dimensional accuracy and surface roughness are required on the inner and outer cylindrical surfaces; an undercut is provided at the joint between the left and right rings of the piston 14 .

Referring to Fig. 6, the clutch housing 16 is a shell structure with complex cross-section manufactured by casting, including a disc-shaped wall plate arranged perpendicular to the axis, and a radial Through the cylindrical oil passage, the upper end of the cylindrical oil passage is provided with a threaded blind hole for installing the bolt plug; the center of the disc-shaped wall plate is provided with a central through hole, which is used to set the guide wheel seat 20; the disc-shaped A supporting sleeve for installing the oil pump drive gear 17 is coaxially connected to the periphery of the central through hole on the right end of the wall plate, and 16 threaded through holes for installing fastening bolts are uniformly arranged on the circumference of the right end of the supporting sleeve; A ring-shaped projection is coaxially connected to the periphery of the center through hole on the left end face of the shaped wall plate, and the left end of the ring-shaped projection inner surface is provided with a bearing hole for installing the bearing 27, and the left end of the bearing hole is provided with a ring for installing a card. The circular groove of the spring; the outer edge of the left end face of the disc-shaped wall plate is coaxially connected with a cylindrical wall plate, and the outer cylindrical surface of the right end of the cylindrical wall plate is connected with the outer cylindrical surface of the disc-shaped wall plate. On the same cylindrical surface, the inner cylindrical surface of the right end of the cylindrical wall plate and the left end surface of the disc-shaped wall plate are transitionally connected by arc chamfering; the outer cylindrical surface of the left end of the cylindrical wall plate is coaxially connected with a circular ring Fixed plate, the right end surface of the circular fixed plate and the outer cylindrical surface of the cylindrical wall plate are transitionally connected by arc chamfering, the left end surface of the circular fixed plate and the left end surface of the cylindrical wall plate are on the same plane, and the circular ring There are 18 axial through holes for set bolts evenly arranged on the circumference of the fixed plate; the inner cylindrical surface at the left end of the cylindrical wall plate is coaxially connected with an inner spline hole, and the left end surface of the inner spline hole is in line with the circle. The left end surface of the cylindrical wall plate is on the same plane; the right end surface of the inner spline hole and the inner cylindrical surface of the cylindrical wall plate are connected through a circular arc chamfer; between the cylindrical wall plate and the annular protrusion The left end surface of the disc-shaped wall plate in the middle is coaxially provided with a ring-shaped boss, and the connection between the ring-shaped boss and the disc-shaped wall plate is transitionally connected by arc chamfering; The left end is provided with a piston cylinder for installing the piston 14, the piston cylinder is in the shape of a circular groove, and the bottom surface of the right end of the piston cylinder is provided with an oil hole for communicating with the cylindrical oil passage, and the inner wall of the piston cylinder is provided with a useful The circular groove for installing the O-ring.

Referring to Fig. 1 and Fig. 6, the clutch housing 16 is set on the guide wheel base 20, the cylindrical oil channel on the clutch housing 16 is aligned with the clutch oil supply channel on the guide wheel base 20, and the connection between the two is provided with left and right two An identical O-ring; the baffle plate 11 is installed on the left end face of the clutch housing 16 for contact connection, and the clutch housing 16 and the baffle plate 11 are fixed on the right end face of the cover wheel 4 by bolts; the piston 14 passes through its right end circle. The ring body is installed in the piston cylinder of the clutch housing 16 as a transition fit, and the two can slide relative to each other, and an O-shaped sealing ring is arranged between the two; active friction plates 12 are alternately arranged between the baffle plate 11 and the piston 14 With the driven friction plate 13, the active friction plate 12 is installed in the inner spline hole of the clutch housing 16 through a spline to be a sliding connection. In the embodiment, there are three identical active friction plates 12, and every two active friction plates 12 are equally spaced. A driven friction plate 13 is provided; two identical driven friction plates 13 are mounted on the transmission plate 15 in the torsional damping part through internal splines, and the torsional damping part is fixed on the hydraulic torque converter pump wheel 8 by bolts The right end face of the wall of the central through hole.

When the hydraulic torque converter with the pump wheel clutch starts, the engine machine drives the cover wheel 4, the baffle plate 11, the active friction plate 12, the piston 14, the clutch housing 16 and the oil pump drive gear 17 to rotate through the input shaft 1. The piston moves by controlling the pressure in the working chamber of the piston cylinder, thereby changing the thickness of the oil film between the active friction plate 12 and the driven friction plate 13, and using the oil film shearing effect between the active friction plate 12 and the driven friction plate 13 to transmit torque Then the driven friction plate 13 is driven to rotate, and the driven friction plate 13 transmits the power to the transmission disc 15, and the transmission disc 15 transmits the power to the driven disc hub 30 through the damping spring, and the driven disc hub 30 drives the pump wheel 8 to rotate, and at the same time The pump wheel 8 converts the mechanical energy into the kinetic energy of the working fluid filled in the inner cavity of the torque converter, drives the turbine 5 to rotate, and the turbine 5 transmits the power to the output shaft 22 through the turbine seat 9 connected thereto, and the output shaft 22 transmits the power output. When the oil supply control pressure of the pump wheel clutch is greater than a certain value, the piston moves to squeeze the friction plate to make the clutch completely combined, and the friction state of the pump wheel clutch is static friction. At this time, the speed of the pump wheel 8 is the same as that of the input shaft 1; when the pump wheel When the clutch oil supply control pressure is less than a certain value, because there is a certain pressure in the side cavity of the hydraulic torque converter, the pressure in the side cavity makes the piston move in the reverse direction, the clutch is separated, the friction plate is immersed in the side cavity oil, and the friction state is liquid friction, but at this time the gap is large, the friction torque is small or even negligible, and the speed of the pump wheel 8 is 0 at this time; when the oil supply control pressure of the pump wheel clutch changes between these two limit pressures, the pump wheel clutch Partially combined, there is a speed difference between the pump wheel 8 and the input shaft 1. By adjusting the oil supply control pressure of the pump wheel clutch, the speed of the torque converter pump wheel 8 can be adjusted steplessly under the condition that the input shaft 1 speed remains unchanged. , to achieve a reasonable adjustment of the power distribution of the transmission system and the hydraulic system, and then achieve the purpose of ideal matching of the loader. When the friction state of the pump wheel clutch changes from static friction to liquid friction, or from liquid friction to static friction, its friction coefficient will change suddenly. The torsional damping device added in the utility model can weaken or eliminate this phenomenon, making the pump The transmission of the wheel clutch is more stable.

Claims (10)

1. a kind of fluid torque-converter with pump impeller clutch, it is characterised in that, the described fluid power with pump impeller clutch becomes Square device includes fluid torque-converter and pump impeller clutch；

Described fluid torque-converter includes input shaft (1), No. 1 cylinder roller bearing (3), hubcap (4), pump impeller (8), turbine seat (9), No. 2 cylinder roller bearings (18), wheel stand (20), output shaft (22), No. 2 deep groove ball bearings (24) and thrust bearing (34)；

Described pump impeller clutch includes baffle plate (11), clutch outer member (16), oil pump drive gear (17), No. 3 deep-groove balls Bearing (27) is with reversing damping part；Wherein：Reversing damping part includes 2 structure identical hub plates (30)；

Described input shaft (1) and output shaft (22) left and right horizontal ground coaxial placement, hubcap (4) is fixedly mounted on defeated using bolt Enter the right-hand member of axle (1), hubcap (4) is sleeved on turbine seat (9) to rotate connection, turbine seat by No. 1 cylinder roller bearing (3) (9) it is sleeved on the left end of output shaft (22) to connect for spline pair, wheel stand (20) is sleeved on output shaft (22), wheel stand (20) Right-hand member rotated and be connected by No. 2 deep groove ball bearings (24) and output shaft (22), the left side of wheel stand (20) passes through thrust axis The right side for holding (34) and turbine seat (9) is in contact and is connected to rotate；

Reverse damping part to be sleeved on the wheel stand (20) on the right side of hubcap (4), oil pump drive gear (17) and wheel stand (20) Between rotate connection using No. 2 cylinder roller bearings (18), the centre bore of clutch outer member (16) passes through deep groove ball bearing (27) It is sleeved on wheel stand (20)；Hubcap (4), baffle plate (11) contact connection successively with clutch outer member (16)；Reverse damping part Used and be bolted on the right side of pump impeller (8) central through hole hole wall by 2 structure identical hub plates (30).

2. according to the fluid torque-converter with pump impeller clutch described in claim 1, it is characterised in that, described hydraulic moment changeable Device also include axle end baffle plate (2), turbine (5), guide wheel (6), guide wheel link (7), No. 1 deep groove ball bearing (10), end cap (21), Oil sealing (23) and bolts at axle end (32)；

Described turbine (5) is fixedly mounted on using bolt on the ring flange of turbine seat (9) right-hand member, and guide wheel (6) is arranged on turbine On guide wheel link (7) on the right side of seat (9), it is connected between guide wheel (6) and guide wheel link (7) for spline pair, guide wheel link (7) it is sleeved on wheel stand (20), is connected between guide wheel link (7) and wheel stand (20) for spline pair, pump impeller (8) uses 1 Number deep groove ball bearing (10) is arranged on to rotate connection on the wheel stand (20) on the right side of guide wheel link (7), and axle end baffle plate (2) is adopted It is fixed on bolts at axle end (32) on the right side of output shaft (22), the right side of shaft part baffle plate (2) and the left end of turbine seat (9) Face is connected for contact, and end cap (21), the left side of end cap (21) and wheel stand are coaxially arranged with the right side of wheel stand (20) (20) right side contact connection, and is fixed on the right side of wheel stand (20) by dormant bolt, end cap (21) with it is defeated One oil sealing (23) is installed between shaft (22).

3. according to the fluid torque-converter with pump impeller clutch described in claim 1, it is characterised in that, described pump impeller clutch Device also includes 3 structure identical active friction plates (12), 2 structure identical driven friction disks (13) and piston (14)； Reversing damping part also includes drive plate (15), positioning disk (28), friction sleeve (29) and 4 structure identical damping springs (31)；

One end of described piston (14) is arranged in the piston cylinder on clutch outer member (16), piston (14) and baffle plate (11) it Between 3 structure identical active friction plates (12) and 2 structure identical driven friction disks (13), 3 structures are respectively installed Identical active friction plate (12) periphery is connected with the inwall of clutch outer member (16) for tooth engagement, and 2 structure identicals are driven The inner hole wall of friction plate (13) is that tooth engagement is connected with drive plate (15) periphery；

2 structure identical hub plates (30) are arranged on drive plate (15) central through hole both sides, driven in 2 structure identicals Friction sleeve (29) and positioning disk (28) are installed, friction sleeve (29) is sleeved between hub (30) and in drive plate (15) centre bore It is interference fits, friction sleeve (29) and positioning disk on positioning disk (28), between drive plate (15) centre bore and friction sleeve (29) (28) it is interference fit between, 4 annular through-holes pair on 2 structure identical hub plates (30) and drive plate (15) Just, 4 structures are installed in the annular through-hole that 4 on 2 structure identical hub plates (30) and drive plate (15) align Identical damping spring (31).

4. according to the fluid torque-converter with pump impeller clutch described in claim 3, it is characterised in that, described drive plate (15) it is torus type gear formula structural member, the cross section shape in T shape of drive plate (15), on the external cylindrical surface of drive plate (15) The gear teeth are equably provided with vertically, and the center of drive plate (15) is provided with the central through hole for installing friction sleeve (29), 4 completely identical in structure annulars for being used to install damping spring (31) are equably provided with the disc around central through hole Through hole.

5. according to the fluid torque-converter with pump impeller clutch described in claim 3, it is characterised in that, described piston (14) It is made up of left and right two coaxially arranged cross sections for the torus of different rectangles, the axial cross section of piston (14) is gone to upper and lower Symmetrical type shape；The inside radius and outer radius of the left end torus of piston (14) are effective with active friction plate (12) respectively The inside and outside radius of contact surface is identical；The right-hand member torus of piston (14) is constituted with the piston cylinder on clutch outer member (16) and moved Pair, the left end torus of piston (14) is provided with escape with the junction of right-hand member torus.

6. according to the fluid torque-converter with pump impeller clutch described in claim 1, it is characterised in that, described turbine seat (9) be right big left small stepped disk formula structural member, the left end of turbine seat (9) for diameter it is minimum be used for cylindrical roller is installed The bearing section of bearing (3), the right-hand member of bearing section is coaxially connected with shaft shoulder section of the diameter more than bearing section, and the two junction is formd Positioning shaft shoulder, the right-hand member of shaft shoulder section is coaxially connected with a diameter of maximum ring flange, and the two junction is connected by arc surface transition Connect, 10 axial bolts through holes are evenly arranged with the circumference on ring flange periphery, the center of turbine seat (9) is provided with center and led to Hole, inner spline groove is equably provided with the hole wall of central through hole, is provided with the right side of central through hole for installing The bearing hole of thrust bearing (34).

7. according to the fluid torque-converter with pump impeller clutch described in claim 1, it is characterised in that, described wheel stand (20) it is cylindrical shape axle sleeve class formation part, the center that the center of wheel stand (20) is provided with for installing output shaft (22) leads to Hole, aperture is coaxially connected with more than the bearing shaft part for being used to install output shaft (22) of central through hole in the right-hand member of central through hole Sealed groove, diameter is coaxially connected with more than sealed groove for installing deep groove ball bearing (24) in the right-hand member of sealed groove Bearing hole, the shaft shoulder for positioning deep groove ball bearing (24) is provided with the junction of bearing hole Yu sealed groove right side；Lead The outline of wheel seat (20) is in ladder shaft-like, and its high order end is to be set on the minimum splined shaft section of diameter, the left side of splined shaft section Being equipped with one is used for the round ring boss of installed thrust bearing (34), and the right-hand member of splined shaft section is coaxially connected with diameter more than spline No. 1 bearing section for being used to install deep groove ball bearing (10) of shaft part, the junction between the two is provided with grinding undercut；No. 1 bearing section Right-hand member be coaxially connected with for installing No. 2 bearing sections of deep groove ball bearing (27), the junction between the two is provided with grinding undercut, And form positioning shaft shoulder；The right-hand member of No. 2 bearing sections is coaxially connected with sealing shaft part of the diameter more than No. 2 bearing sections, seal shaft The junction of section and No. 2 bearing sections is provided with grinding undercut, and forms positioning shaft shoulder, and the left end of sealing shaft part is provided with two use In the annular groove for installing sealing ring；The right-hand member of seal section is coaxially connected with No. 3 for No. 2 cylinder roller bearings (18) of installation Bearing section, a toroidal cavity for being used to install jump ring is provided with the left end of No. 3 bearing sections, and the right-hand member of No. 3 bearing sections leads to Cross one section of shaft shoulder and be connected with the maximum oil duct shaft part of diameter, one is radially respectively arranged with the outer cylinder surface of oil duct shaft part Individual clutch feed mouthful (19), a torque-converters oil inlet (26) and a torque-converters oil-out (33)；On the right side of oil duct shaft part End is coaxially connected with the fixation shaft part for connection frame that diameter is less than oil duct shaft part；Oil duct shaft part, sealing shaft part and It is axially disposed on guide wheel pedestal between the two to have for No. 1 oil duct to clutch feed, in fixed shaft part, axle sleeve shaft part And axially disposed on guide wheel pedestal between the two have for No. 2 oil ducts to torque-converters fuel feeding；The right side of wheel stand (20) It is uniform on the circumference on end face periphery to be provided with 8 tapped blind holes for installation bolt.

8. according to the fluid torque-converter with pump impeller clutch described in claim 1, it is characterised in that, described output shaft (22) be stepped axle class formation part, the high order end of output shaft (22) is splined shaft section, its left side center vertically It is provided with a tapped blind hole；The right-hand member of splined shaft section is coaxially connected with axis body section of the diameter less than splined shaft section, therebetween Connected using circular conical surface；The right-hand member of axis body section is coaxially connected with bearing shaft part of the diameter more than axis body section, therebetween using circle Ring curved surface is connected, and one is provided with the external cylindrical surface of the left end of bearing shaft part is used for the annular groove of mounting O-shaped sealing ring； The right-hand member of bearing shaft end is coaxially connected with the sealing shaft part that diameter is more than bearing shaft part, and the junction between the two forms locating shaft Shoulder；The right-hand member of sealing shaft part is coaxially connected with the splined shaft section that diameter is less than sealing shaft part, and the junction between the two is provided with more Journey groove.

9. according to the fluid torque-converter with pump impeller clutch described in claim 1, it is characterised in that, described hub plate (30) it is annulus class plank frame part, the center that the center of hub plate (30) is provided with for installing wheel stand (20) leads to Hole, 4 completely identical in structure annulars for being used to install damping spring (31) are evenly arranged with the periphery of hub plate (30) Through hole, the radial dimension of annular through-hole is less than in the diameter of damping spring (31), the plate face between annular through-hole and centre bore It is evenly arranged with 8 through holes for being used to install fastening bolt.

10. according to the fluid torque-converter with pump impeller clutch described in claim 1, it is characterised in that, described clutch Shell (16) is the case type structural member with complex section manufactured using forging type, includes what is arranged perpendicular to axis A cylindrical oil duct for prolonging radial direction insertion is provided with disc wallboard, disc wallboard, the upper end of cylindrical oil duct is set There is the tapped blind hole for installation bolt plug；The center of disc wallboard is provided with the center for being set with wheel stand (20) Through hole；The support for installing oil pump drive gear (17) is coaxially connected with the central through hole periphery of disc wallboard right side 16 tapped through holes for being used to install fastening bolt are evenly arranged with sleeve, the circumference of stop sleeve right-hand member；Disc wallboard An annular projection is coaxially connected with the central through hole periphery of left side, the left end of annular convex inner surface is provided with use In the bearing hole for installing No. 3 deep groove ball bearings (27), the left end of bearing hole is provided with the toroidal cavity for installing jump ring；Circle The outer edge of dish type wallboard left side is coaxially connected with cylindrical shape wallboard, the outer cylinder surface and disk of cylindrical shape wallboard right-hand member The outer cylinder surface of shape wallboard is on the same face of cylinder, the inner periphery of the right-hand member of cylindrical shape wallboard and a left side for disc wallboard End face is connected by circular arc chamfering transition；The outer cylinder surface of cylindrical shape wallboard left end is coaxially connected with circular fixing plate, circle Ring-type fixing plate right side is connected with cylindrical shape wallboard outer cylinder surface by circular arc chamfering transition, circular fixing plate left side With cylindrical shape wallboard left side at grade, it is uniform on the circumference on circular fixing plate periphery to be provided with 18 for covering Fill the axially extending bore of bolt；The inner periphery of cylindrical shape wallboard left end is coaxially connected with internal splined hole, the left end of internal splined hole Face and cylindrical shape wallboard left side are at grade；The right side of internal splined hole passes through circle with the inner cylinder face of cylindrical shape wallboard Arc chamfered transition is connected；It is coaxially arranged with the left side of the disc wallboard of cylindrical shape wallboard and annular between raised One round ring boss, round ring boss is connected with the junction of disc wallboard by circular arc chamfering transition；In round ring boss Left end be provided with for installing the piston cylinders of piston (14), piston cylinder is in toroidal cavity shape, in the right-hand member bottom surface of piston cylinder On be provided with oil-through hole for connecting cylindrical oil duct, be provided with the madial wall of piston cylinder for mounting O-shaped sealing ring Toroidal cavity.