A gearbox with output cycle forward and reverse

Abstract

A gearbox with output cycle forward and reverse rotation, comprising a housing, an input shaft, a first bearing, a limit bearing, a gear, an arc-shaped rack, a first limit arc-shaped stopper, an output shaft, a first limit arc-shaped stopper, and a rack limit stopper; the input shaft is arranged on the housing through the first bearing, the front end of the input shaft has a gear, the gear and the arc-shaped rack are meshed to form a transmission pair, a limit bearing is sleeved on the input shaft at the rear side of the gear, the arc-shaped rack is sleeved on the output shaft, the output shaft is respectively provided with rack limit stops, and both ends of the arc-shaped rack are provided with limit arc stops; both ends of the output shaft are arranged on the housing through the second bearing; the input shaft drives the gear to rotate, the gear and the arc-shaped rack are meshed to drive the arc-shaped rack to rotate, and the arc-shaped rack drives the output shaft to output forward and reverse reciprocating rotation. The present invention can realize one steering input and two cycle reciprocating steering outputs. Using the present invention can save 50% energy.

Description

Technical Field

[0001] The invention relates to a gearbox, in particular to a gearbox with forward and reverse output cycles. Background Art

[0002] At present, the beam pumping unit has become one of the main types of pumping units used in oil fields due to its reliable performance, simple structure, and easy operation and maintenance.

[0003] Conventional beam pumping units use a crank mechanism to achieve the up and down reciprocating motion of the pumping unit. This reciprocating mechanism has a complex structure. In addition, during the up and down strokes of the pumping unit, the torque generated on the rotating shaft of the crank mechanism is unequal, and the torque on the crank shaft varies greatly, which directly leads to large fluctuations in the motor power. The motor has a low load rate most of the time, and a large amount of mechanical energy is wasted in the form of heat loss. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of complicated crank mechanism of existing oil pumping unit and the problem of high energy consumption of electric motor used in oil pumping unit, and to provide a gearbox with forward and reverse output cycle.

[0005] A gearbox with output cycle forward and reverse rotation, comprising a housing, an input shaft, a first bearing, a limit bearing, a gear, an arc-shaped rack, a first limit arc stopper, an output shaft, a second limit arc stopper, and a rack limit stopper;

[0006] The input shaft, the first bearing, the limit bearing, the gear, the arc-shaped rack, the first limit arc-shaped stopper, the output shaft and the rack limit stopper are all located in the box;

[0007] The input shaft is arranged on the housing through the first bearing, the front end of the input shaft is provided with a gear, the gear is meshed with the arc-shaped rack to form a transmission pair, a limit bearing is sleeved on the input shaft at the rear side of the gear, the center of the arc-shaped rack is provided with a spline sleeve, the middle part of the output shaft is provided with a spline, the arc-shaped rack is sleeved on the output shaft, and the arc-shaped rack is connected to the output shaft through the spline sleeve and the spline; the output shaft at both ends of the spline is provided with a rack limit stopper, and the two ends of the arc-shaped rack are provided with a first limit arc stopper and a second limit arc stopper; the two ends of the output shaft are arranged on the housing through the second bearing; the periphery of the arc-shaped rack is provided with teeth, and the gear can mesh with the arc-shaped rack;

[0008] When the gear meshes with the end of the arc-shaped rack, the circumferential surface of the limit bearing contacts the inner recess of the first limit arc stop or the second limit arc stop, and the first limit arc stop or the second limit arc stop forces the gear to contact with the end of the arc-shaped rack to achieve meshing rotation;

[0009] During the transmission process, when the arc-shaped rack is located on the side of the output shaft, the rack limit stop stops the arc-shaped rack, forcing the other side of the arc-shaped rack to mesh with the gear for transmission.

[0010] The teeth of the arc-shaped rack and gear are bar-shaped teeth.

[0011] The teeth of the arc-shaped rack and gear are spherical teeth.

[0012] The first limit arc stopper and the second limit arc stopper are provided with a plurality of through holes, and the purpose of providing the through holes is to reduce the resistance of the lubricating oil in the box body during the transmission process.

[0013] The input shaft inputs power through a worm gear mechanism, and the worm gear mechanism is connected to an electric motor or an engine, or the input shaft is connected to a reduction box, and the reduction box is connected to an electric motor or an engine.

[0014] Working process and principle of the present invention:

[0015] The input shaft drives the gear to rotate, the gear meshes with the arc-shaped rack to drive the arc-shaped rack to rotate, and the arc-shaped rack drives the output shaft to rotate; when the gear meshes with one side of the arc-shaped rack, the arc-shaped rack drives the output shaft to rotate in one direction, and when the gear meshes with the other side of the arc-shaped rack, the arc-shaped rack drives the output shaft to rotate in the opposite direction, so that the input shaft rotates in one direction, and the output shaft can output forward and reverse reciprocating rotation.

[0016] When the gear is meshed with both ends of the arc-shaped rack, the first limit arc block or the second limit arc block forces the gear to mesh with the arc-shaped rack; as shown in the figure and the figure, when the arc-shaped rack slides to the two sides, the rack limit block forces the arc-shaped rack to mesh with the gear, realizing the transmission of the arc-shaped rack and the gear.

[0017] The beneficial effects of the present invention are:

[0018] 1. It can realize one steering input and two reciprocating steering outputs.

[0019] 2. Compact structure, good sealing, long service life and smooth transmission.

[0020] 3. When the present invention is applied to an oil pump, comparative tests have shown that the use of the present invention can save 50% of energy.

[0021] 4. The present invention can be applied to fields with one steering input and two reciprocating steering outputs, such as pumping units used in oil fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional appearance schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0024] Figure 3 It is a schematic diagram of a state in which the arc-shaped rack of the present invention slides to one side.

[0025] Figure 4 It is a schematic diagram of the state in which the arc-shaped rack of the present invention slides to the other side.

[0026] Figure 5 It is a schematic diagram of the meshing of the gear and the arc-shaped rack of the present invention.

[0027] Figure 6 It is a three-dimensional schematic diagram of the arc-shaped rack of the present invention.

[0028] Figure 7 It is a three-dimensional schematic diagram of the first limit arc stop and the second limit arc stop of the present invention.

[0029] Figure 8 It is a three-dimensional schematic diagram of a gear of the present invention. DETAILED DESCRIPTION

[0030] Reference Figures 1 to 8 As shown, a gearbox with output cycle forward and reverse rotation includes a housing 1, an input shaft 2, a first bearing 3, a limit bearing 4, a gear 5, an arc-shaped rack 6, a first limit arc stop 7, an output shaft 8, a second limit arc stop 9, and a rack limit stop 10; the input shaft 2, the first bearing 3, the limit bearing 4, the gear 5, the arc-shaped rack 6, the first limit arc stop 7, the output shaft 8 and the rack limit stop 10 are all located in the housing 1; the input shaft 2 is arranged on the housing 1 through the first bearing 3,

[0031] The input shaft 2 is arranged on the housing 1 through the first bearing 3. The front end of the input shaft 2 is provided with a gear 5. The gear 5 is meshed with the arc-shaped rack 6 to form a transmission pair. A limit bearing 4 is sleeved on the input shaft 2 on the rear side of the gear 5. The center of the arc-shaped rack 6 is provided with a spline sleeve 61. The middle part of the output shaft 8 is provided with a spline 81. The arc-shaped rack 6 is sleeved on the output shaft 8. The arc-shaped rack 6 and the output shaft 8 are connected through the spline sleeve 61 and the spline 81; rack limit stops 10 are respectively arranged on the output shaft 8 at both ends of the spline 81, and the two ends of the arc-shaped rack 6 are respectively provided with a first limit arc stop 7 and a second limit arc stop 9; the first limit arc stop 7 and the second limit arc stop 9 are installed on the arc-shaped rack 6 through two mounting seats 62 on the arc-shaped rack 6, as shown in FIG. Figure 6 As shown;

[0032] Both ends of the output shaft 8 are arranged on the housing 1 through second bearings 11;

[0033] The arc-shaped rack 6 has teeth on its periphery, and the gear 5 can mesh with the arc-shaped rack 6;

[0034] When the gear 5 meshes with the end of the arc-shaped rack 6, Figure 2 As shown, the circumferential surface of the limit bearing 4 is in contact with the inner recess of the first limit arc stop 7 or the second limit arc stop 9, and the first limit arc stop 7 or the second limit arc stop 9 forces the gear 5 to contact the end of the arc-shaped rack 6 to achieve meshing rotation;

[0035] Such as 3 and Figure 4 As shown, during the transmission process, when the arc-shaped rack 6 is located on the side of the output shaft 8, the rack limit stop 10 stops the arc-shaped rack 6, forcing the other side of the arc-shaped rack 6 to mesh with the gear 5 for transmission.

[0036] The teeth of the arc-shaped rack 6 and the gear 5 are bar-shaped teeth.

[0037] The teeth of the arc-shaped rack 6 and the gear 5 are spherical teeth, such as Figure 6 , Figure 6 and Figure 8 As shown, in this embodiment, the teeth of the gear 5 are convex balls, and the teeth of the arc-shaped rack 6 are spherical pits, and the convex balls cooperate with the spherical pits to achieve transmission. Or the teeth of the gear 5 are pits, and the teeth of the arc-shaped rack 6 are convex balls.

[0038] The first limit arc stop 7 and the second limit arc stop 9 are provided with a plurality of through holes 91. The purpose of providing the through holes 91 is to reduce the resistance of the lubricating oil in the box during the transmission process. Figure 7 shown.

[0039] The input shaft 2 inputs power through the worm gear mechanism 12, and the worm gear mechanism 12 is connected to the motor or the engine, or the input shaft 2 is connected to the reduction box, and the reduction box is connected to the motor or the engine.

[0040] The working process and principle of this embodiment:

[0041] The input shaft 2 drives the gear 5 to rotate, the gear 5 is engaged with the arc-shaped rack 6 to drive the arc-shaped rack 6 to rotate, and the arc-shaped rack 6 drives the output shaft 8 to rotate; when the gear 5 is engaged with one side of the arc-shaped rack 6, the arc-shaped rack 6 drives the output shaft 8 to rotate in one direction, and when the gear 5 is engaged with the other side of the arc-shaped rack 6, the arc-shaped rack 6 drives the output shaft 8 to rotate in the opposite direction, so that the input shaft 2 rotates in one direction, and the output shaft 8 can output forward and reverse reciprocating rotation.

[0042] like Figure 2 As shown, when the gear 5 is meshed with both ends of the arc-shaped rack 6, the first limit arc stop 7 or the second limit arc stop 9 forces the gear 5 to mesh with the arc-shaped rack 6; Figure 3 and Figure 4As shown, when the arc-shaped rack 6 slides to two side edges, the rack limit stop 10 forces the arc-shaped rack 6 to mesh with the gear 5, thereby realizing transmission between the arc-shaped rack 6 and the gear 5.

[0043] Test results of the present invention:

[0044] The comparison test objects are a type III beam pumping unit and a pumping unit using the present invention;

[0045] Using the same motor, the input voltage is 380V.

[0046] The measurement method is to measure the working current.

[0047] Measurement results: The working current of the motor of the type III beam pumping unit is 8A; the working current of the motor of the present invention is 4A. According to the known calculation of energy consumption, it is concluded that the pumping unit of the present invention saves 50% energy compared with the type III beam pumping unit.

Claims

1. A gearbox with output cycle forward and reverse rotation, characterized in that: It comprises a housing (1), an input shaft (2), a first bearing (3), a limit bearing (4), a gear (5), an arc-shaped rack (6), a first limit arc stopper (7), an output shaft (8), a second limit arc stopper (9), and a rack limit stopper (10); The input shaft (2), the first bearing (3), the limit bearing (4), the gear (5), the arc-shaped rack (6), the first limit arc stopper (7), the output shaft (8) and the rack limit stopper (10) are all located in the housing (1); The input shaft (2) is arranged on the housing (1) via a first bearing (3); a gear (5) is provided at the front end of the input shaft (2); the gear (5) meshes with the arc-shaped rack (6) to form a transmission pair; a limit bearing (4) is sleeved on the input shaft (2) at the rear side of the gear (5); a spline sleeve (61) is provided at the center of the arc-shaped rack (6); a spline (81) is provided at the middle portion of the output shaft (8); the arc-shaped rack (6) is sleeved on the output shaft (8); the arc-shaped rack (6) and the output shaft (8) are connected via the spline sleeve (61) and the spline (81); rack limit stops (10) are respectively provided on the output shaft (8) at both ends of the spline (81); and a first limit arc stop (7) and a second limit arc stop (9) are respectively provided at two ends of the arc-shaped rack (6); Both ends of the output shaft (8) are arranged on the housing (1) via second bearings (11); The arc-shaped rack (6) has teeth on its periphery, and the gear (5) can mesh with the arc-shaped rack (6); When the gear (5) meshes with the end of the arc-shaped rack (6), the circumferential surface of the limit bearing (4) contacts the inner recess of the first limit arc stopper (7) or the second limit arc stopper (9), and the first limit arc stopper (7) or the second limit arc stopper (9) forces the gear (5) to contact with the end of the arc-shaped rack (6), thereby achieving meshing rotation; During the transmission process, when the arc-shaped rack (6) is located on the side of the output shaft (8), the rack limit stopper (10) stops the arc-shaped rack (6), forcing the other side of the arc-shaped rack (6) to mesh with the gear (5) for transmission; The teeth of the arc-shaped rack (6) and the gear (5) are spherical teeth; The first limit arc stopper (7) and the second limit arc stopper (9) are provided with a plurality of through holes (91).

2. A gearbox with output cycle forward and reverse rotation according to claim 1, characterized in that: The first limit arc stop (7) and the second limit arc stop (9) are mounted on the arc-shaped rack (6) via two mounting seats (62) on the arc-shaped rack (6).

3. A gearbox with output cycle forward and reverse rotation according to claim 1, characterized in that: The input shaft (2) inputs power through a worm gear mechanism (12), and the worm gear mechanism (12) is connected to an electric motor or an engine.

4. A gearbox with output cycle forward and reverse rotation according to claim 1, characterized in that: The input shaft (2) is connected to a reduction gearbox, and the reduction gearbox is connected to an electric motor or an engine.

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