Mechanical continuously variable transmission assembly

Abstract

The invention discloses a mechanical continuously variable transmission assembly, and relates to the technical field of vehicle transmissions.The mechanical continuously variable transmission assembly comprises a shell, a variable pump assembly and a constant displacement motor assembly, and the variable pump assembly and the constant displacement motor assembly are installed at the end of the shell and the side face of the shell in a staggered mode respectively; a regulator is mounted at one end, away from the constant displacement motor assembly, of the shell; the variable pump assembly comprises an input shaft movably connected with the side face of the shell, and a variable swash plate in transmission connection with the adjuster is arranged on the outer side of the input shaft. The variable swash plate is arranged on the inner side of the shell; the variable swash plate is driven to incline through the swing plate, the first plunger and the first cylinder body are matched, the volume in the oil cavity is changed, the gear ratio is controlled through hydraulic oil, the variable pump assembly and the constant displacement motor assembly are arranged in a staggered mode, the installation modes are increased, and vertical shaft input and horizontal shaft input can be achieved.

Description

Technical Field

[0001] The present invention specifically relates to the technical field of vehicle transmissions, and in particular to a mechanical continuously variable transmission assembly. Background Art

[0002] A continuously variable transmission is a transmission that can achieve continuous changes in transmission ratio. A continuously variable transmission consists of an active bevel gear, a driven bevel gear, a steel belt, and a hydraulic control system. This type of transmission is subject to severe wear and tear and is not suitable for transmissions with heavy loads.

[0003] There is another type of continuously variable transmission assembly which is usually mainly composed of a variable pump, a quantitative motor, a control valve and some connecting pipes. The variable pump is one of the key components of a hydrostatic transmission, which can change the size and direction of the output flow. By adjusting the displacement of the pump, the output flow is controlled, thereby adjusting the speed and torque of the motor. The quantitative motor converts hydraulic energy into mechanical energy and outputs the corresponding speed and torque.

[0004] However, this type of transmission has very few applications when in use because the input shaft and the output shaft are mostly distributed on one side and cannot meet the needs of vertical shaft input and horizontal shaft input. Summary of the invention

[0005] The purpose of the present invention is to provide a mechanical continuously variable transmission assembly, which can increase the installation methods of the transmission assembly by staggered arrangement between the variable displacement pump assembly and the fixed displacement motor assembly, and the tension spring pulls the swing plate to automatically rebound, thereby improving the safety of the vehicle, so as to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A mechanical continuously variable transmission assembly comprises a housing, a variable displacement pump assembly and a quantitative motor assembly, wherein the variable displacement pump assembly and the quantitative motor assembly are respectively and alternately mounted on the end and the side of the housing, and a regulator is mounted on one end of the housing away from the quantitative motor assembly; The variable pump assembly comprises an input shaft movably connected to the side of the housing, and a variable inclined plate drivingly connected to the regulator is arranged on the outer side of the input shaft.

[0007] As a further technical solution of the present invention, the variable swash plate is arranged on the inner side of the outer shell, and a swing column movably connected to the outer shell is provided on one side of the variable swash plate, and the swing column extends to one end of the outer side of the outer shell.

[0008] As a further technical solution of the present invention, a thruster bearing is installed on the inner side of the variable swash plate, and an end of the first plunger away from the first cylinder body is attached to the side of the thruster bearing.

[0009] As a further technical solution of the present invention, one side of the variable swash plate is provided with a first plunger and a first cylinder body that cooperate with each other, and the first plunger and the inner side of the first cylinder body are slidably connected.

[0010] As a further technical solution of the present invention, the regulator includes a swing plate, and the swing plate is located outside the shell.

[0011] As a further technical solution of the present invention, a cylindrical pin and a tension spring are respectively provided on one side of the swing plate away from the swing column, and the cylindrical pin is located above the tension spring.

[0012] As a further technical solution of the present invention, a rocking plate is also provided on the side of the cylindrical pin shaft, and the end of the rocking plate is in contact with the cylindrical pin shaft. The rocking plate is arranged in an L shape, and the end of the rocking plate is fixedly connected to the part of the swing column located outside the outer shell; the swinging plate is connected to the outer shell through a cylindrical fixing pin fixed on the outer shell.

[0013] As a further technical solution of the present invention, a spring fixing plate connected to the end of the tension spring is further provided at the end of the housing, and the spring fixing plate is located on a side of the rocking plate away from the swinging plate.

[0014] As a further technical solution of the present invention, the end of the input shaft passes through the inner side of the first cylinder body, and the first cylinder body and the input shaft are connected by an involute spline transmission.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention drives the variable swash plate to tilt by means of the swing plate, cooperates with the first plunger and the first cylinder body, changes the volume in the oil chamber, and realizes the control of the speed ratio by means of hydraulic oil. The variable pump assembly and the quantitative motor assembly are arranged in a staggered manner, and the installation method is increased, and both vertical shaft input and horizontal shaft input are possible. In the present invention, the spring fixing plate fixes the end of the tension spring, so that the tension spring applies a pulling force to the lower part of the swing plate, thereby realizing automatic resetting of the swing plate and improving the safety of the vehicle. The invention can improve the speed ratio of the continuously variable speed change by means of an inclined quantitative swash plate, and cooperate with an adjustable variable pump assembly to improve the transmission efficiency, extend the service life, and realize bidirectional continuously variable speed output. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention in use state.

[0017] Figure 2 The present invention Figure 1 Schematic diagram of the rear structure.

[0018] Figure 3 The present invention Figure 1Right view of .

[0019] Figure 4 The present invention Figure 1 main view.

[0020] Figure 5 The present invention Figure 4 A partial enlarged schematic diagram of .

[0021] Figure 6 The present invention Figure 4 A partial enlarged schematic diagram of .

[0022] Figure 7 It is a structural schematic diagram of the variable displacement pump assembly of the present invention.

[0023] Figure 8 It is a structural schematic diagram of the variable swash plate in the present invention.

[0024] In the figure: Housing-1, variable pump assembly-2, input shaft-21, variable swash plate-22, first plunger-23, first cylinder body-24, swing column-25, regulator-3, swing plate-31, cylindrical pin shaft-32, tension spring-33, rocking plate-34, cylindrical fixing pin-35, quantitative motor assembly-4, output shaft-41, quantitative swash plate-42, second plunger-43, second cylinder body-44, spring fixing plate-5. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The embodiment of the present invention provides a mechanical continuously variable transmission assembly, comprising a housing 1, a variable displacement pump assembly 2 and a quantitative motor assembly 4, wherein the variable displacement pump assembly 2 and the quantitative motor assembly 4 are respectively installed at the end of the housing 1 and the side of the housing 1 in an interlaced manner, and a regulator 3 is installed at one end of the housing 1 away from the quantitative motor assembly 4; The variable displacement pump assembly 2 comprises an input shaft 21 movably connected to the side of the housing 1 , and a variable displacement swash plate 22 drivingly connected to the regulator 3 is disposed on the outer side of the input shaft 21 .

[0027] See also Figure 5-8 In this embodiment, the variable swash plate 22 is arranged on the inner side of the housing 1, and a swing column 25 movably connected to the housing 1 is provided on one side of the variable swash plate 22, and the swing column 25 extends to one end of the outer side of the housing 1.

[0028] More specifically, a thruster bearing is installed on the inner side of the variable swash plate 22, and one end of the first plunger 23 away from the first cylinder body 24 is attached to the side of the thruster bearing.

[0029] Furthermore, one side of the variable swash plate 22 is provided with a first plunger 23 and a first cylinder body 24 that cooperate with each other, and the inner sides of the first plunger 23 and the first cylinder body 24 are slidably connected.

[0030] See also Figure 3 In this embodiment, the regulator 3 includes a swing plate 31, and the swing plate 31 is located outside the housing 1; Specifically, a cylindrical pin 32 and a tension spring 33 are respectively provided on the side of the swing plate 31 away from the swing column 25 , and the cylindrical pin 32 is located above the tension spring 33 .

[0031] Furthermore, a rocking plate 34 is provided on the side of the cylindrical pin 32, and the end of the rocking plate 34 contacts the cylindrical pin 32. The rocking plate 34 is L-shaped, and the end of the rocking plate 34 is fixedly connected to the part of the swing column 25 located outside the housing 1. The purpose of the cylindrical pin 32 is to return the rocking plate 34 to the center (to the corresponding position), and there is no power output in the state of returning to the center. The swing plate 31 is connected to the housing 1 via a cylindrical fixed pin 35, and the cylindrical pin 32 can be fine-tuned to correct the inaccurate power control of the output shaft caused by component errors.

[0032] In this embodiment, a spring fixing plate 5 connected to the end of the tension spring 33 is further provided at the end of the housing 1 , and the spring fixing plate 5 is located on a side of the rocking plate 34 away from the swinging plate 31 .

[0033] In this embodiment, the end of the input shaft 21 passes through the inner side of the first cylinder body 24, and the first cylinder body 24 and the input shaft 21 are connected by an involute spline transmission.

[0034] By adopting the above technical solution, one end of the rocking plate 34 is pulled, and the rocking plate 34 rotates around the bending part, so that the other end of the rocking plate 34 pushes the cylindrical pin 32 on the swinging plate 31 to move, and the rocking plate 34 drives the variable swash plate 22 on the inner side of the shell 1 to tilt and rotate through the swing column 25. At this time, the thruster bearing on the inner side of the shell 1 also tilts and rotates with the variable swash plate 2, thereby adjusting the stroke between the first plunger 23 and the first cylinder body 24, changing the volume inside the first plunger 23 and the first cylinder body 24, and then changing the oil intake and oil output, cooperating with the quantitative motor assembly 4 to realize stepless speed change, and the variable pump assembly 2 and the quantitative motor assembly 4 are staggered, increasing the installation method of the power assembly, and the tension spring 33 pulls the swinging plate 31 to automatically rebound, thereby improving the safety of the vehicle.

[0035] In this embodiment, a cavity is provided inside the first plunger 23, and a compression spring is placed inside the cavity, so that the end of the first plunger 23 is tightly attached to the side of the thrust ball bearing.

[0036] See also Figure 7-8 In this embodiment, the swing column 25 and the housing 1 are connected via an oil-free bearing, and sealing end covers are provided at the ends of the swing column 25 and the housing 1, and the sealing end covers are located on the side where the oil-free bearing is connected.

[0037] In this embodiment, the quantitative motor assembly 4 includes an output shaft 41 movably connected to the housing 1, and a quantitative swash plate 42 is provided on the outer side of the output shaft 41, and the quantitative swash plate 42 is fixed on the inner side of the housing 1; the output shaft 41 corresponds to the input shaft 21 at right angles.

[0038] In this embodiment, a thruster bearing is fixed to the inner side of the quantitative swash plate 42 , and the thruster bearing is arranged to be inclined relative to the output shaft 41 .

[0039] In this embodiment, a second plunger 43 and a second cylinder 44 are further provided on the side of the quantitative swash plate 42 , and the second plunger 43 and the second cylinder 44 slide with each other so that the hydraulic oil pushes the second plunger 43 to move inside the second cylinder 44 .

[0040] In this embodiment, the oil chamber on one side of the variable displacement pump assembly 2 and the oil chamber on one side of the fixed displacement motor assembly 4 are connected through a central distribution plate module.

[0041] In this embodiment, cylindrical oil grooves are provided in an annular array on the inner side of the first cylinder body 24, and the first plunger 23 is inserted into the inner side of the cylindrical oil grooves.

[0042] In this embodiment, a deep groove ball bearing is provided at the end of the cylindrical pin shaft 32 , and the inner ring of the deep groove ball bearing is matched and connected with the cylindrical pin shaft 32 .

[0043] In this embodiment, an arc groove is provided on one side of the rocking plate 34 close to the cylindrical pin 32, and the side surface of the deep groove ball bearing fits the arc groove, thereby reducing the wear on the connection when the rocking plate 34 pushes the cylindrical pin 32 to move.

[0044] In this embodiment, an oil replenishing port is provided on the side of the housing 1, and the hydraulic oil can be replenished at any time in cooperation with an oil replenishing pump.

[0045] The working principle of the present invention is as follows: when in use, first, the hydraulic oil enters the oil chamber from the oil replenishing port at the front end of the housing 1 through the oil supply pump, the input shaft 21 drives the first cylinder 24 and the first plunger 23 to rotate, sucks in and discharges the hydraulic oil, and the hydraulic oil in the oil chamber on one side of the variable pump assembly 2 is sent to the oil chamber on one side of the quantitative motor assembly 4 through the internal channel of the central distribution plate, the hydraulic oil enters the inner side of the second cylinder 44, and pushes the second plunger 43 inside the second cylinder 44 to move outward, because the end of the second plunger 43 is fitted on the inclined surface of the quantitative swash plate 42, the quantitative swash plate 42 moves outward and rotates along the axis of the output shaft 41, thereby mobilizing the output shaft 41 to rotate; When the transmission ratio is adjusted, one end of the rocking plate 34 is pulled, and the rocking plate 34 rotates around the bending part, so that the other end of the rocking plate 34 pushes the cylindrical pin 32 on the swinging plate 31 to move, and the rocking plate 34 drives the variable swash plate 22 on the inner side of the housing 1 to tilt and rotate through the swing column 25. At this time, the thruster bearing on the inner side of the housing 1 also tilts and rotates with the variable swash plate 22, thereby adjusting the stroke between the first plunger 23 and the first cylinder body 24, changing the volume inside the first plunger 23 and the first cylinder body 24, and then changing the oil intake and oil output, and cooperating with the quantitative motor assembly 4 to realize stepless speed change, and the variable pump assembly 2 and the quantitative motor assembly 4 are staggered, increasing the installation method of the power assembly, and the tension spring 33 pulls the swinging plate 31 to automatically rebound, thereby improving vehicle safety.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mechanical continuously variable transmission assembly, characterized in that: The invention comprises a housing (1), a variable displacement pump assembly (2) and a quantitative motor assembly (4), wherein the variable displacement pump assembly (2) and the quantitative motor assembly (4) are respectively installed alternately at the end of the housing (1) and the side of the housing (1), and a regulator (3) is installed at one end of the housing (1) away from the quantitative motor assembly (4); The variable displacement pump assembly (2) comprises an input shaft (21) movably connected to the side of the housing (1), and a variable displacement swash plate (22) drivingly connected to the regulator (3) is provided on the outer side of the input shaft (21).

2. The mechanical continuously variable transmission assembly according to claim 1, characterized in that: The variable swash plate (22) is arranged on the inner side of the outer shell (1), and a swing column (25) movably connected to the outer shell (1) is provided on one side of the variable swash plate (22), and the swing column (25) extends to an outer end of the outer shell (1).

3. The mechanical continuously variable transmission assembly according to claim 2, characterized in that: A thruster bearing is installed on the inner side of the variable swash plate (22), and an end of the first plunger (23) away from the first cylinder body (24) is attached to the side surface of the thruster bearing.

4. The mechanical continuously variable transmission assembly according to claim 3, characterized in that: One side of the variable swash plate (22) is provided with a first plunger (23) and a first cylinder body (24) that cooperate with each other, and the inner sides of the first plunger (23) and the first cylinder body (24) are slidably connected.

5. The mechanical continuously variable transmission assembly according to claim 1, characterized in that: The regulator (3) comprises a swing plate (31), and the swing plate (31) is located outside the housing (1).

6. The mechanical continuously variable transmission assembly according to claim 5, characterized in that: A cylindrical pin (32) and a tension spring (33) are respectively provided on the side of the swing plate (31) away from the swing column (25), and the cylindrical pin (32) is located above the tension spring (33).

7. The mechanical continuously variable transmission assembly according to claim 6, characterized in that: A rocking plate (34) is also provided on the side of the cylindrical pin shaft (32), and the end of the rocking plate (34) contacts the cylindrical pin shaft (32). The rocking plate (34) is arranged in an L shape, and the end of the rocking plate (34) is fixedly connected to the portion of the swing column (25) located outside the housing (1); the swinging plate (31) is connected to the housing (1) via a cylindrical fixing pin (35) fixed to the housing (1).

8. The mechanical continuously variable transmission assembly according to claim 7, characterized in that: The end of the housing (1) is also provided with a spring fixing plate (5) which is hooked to the end of the tension spring (33), and the spring fixing plate (5) is located on a side of the rocking plate (34) away from the swinging plate (31).

9. The mechanical continuously variable transmission assembly according to claim 2, characterized in that: The end of the input shaft (21) passes through the inner side of the first cylinder body (24), and the first cylinder body (24) and the input shaft (21) are connected via an involute spline transmission.

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