阅读说明：本技术 一种液压马达壳体 (Hydraulic motor shell ) 是由 不公告发明人 于 2019-10-31 设计创作，主要内容包括：本发明属于液压马达技术领域,具体的说是一种液压马达壳体；包括外壳,所述外壳内壁两侧均设有一号曲面,所述外壳顶部和底部内壁均设有二号曲面,二号曲面的半径小于一号曲面的半径,所述二号曲面上固连有波浪板,波浪板的波谷位于二号曲面中部位置处,所述外壳两侧均设置有进液口；本发明通过在二号曲面处设有波浪板,在叶片经过二号曲面时,二号曲面会与波浪板的波峰摩擦,降低了二号曲面的磨损,提高工作时的稳定性。(The invention belongs to the technical field of hydraulic motors, and particularly relates to a hydraulic motor shell; the corrugated plate comprises a shell, wherein first curved surfaces are arranged on two sides of the inner wall of the shell, second curved surfaces are arranged on the inner walls of the top and the bottom of the shell, the radius of each second curved surface is smaller than that of each first curved surface, a corrugated plate is fixedly connected to each second curved surface, the wave trough of each corrugated plate is located in the middle of each second curved surface, and liquid inlets are formed in two sides of the shell; according to the invention, the wave plate is arranged at the second curved surface, and when the blade passes through the second curved surface, the second curved surface can rub with the wave crest of the wave plate, so that the abrasion of the second curved surface is reduced, and the stability in working is improved.)

1. A hydraulic motor housing comprising a casing (1), characterized in that: shell (1) inner wall both sides all are equipped with curved surface (2) No. one, shell (1) top and bottom inner wall all are equipped with No. two curved surfaces (3), and the radius of No. two curved surfaces (3) is less than the radius of a curved surface (2), No. two curved surfaces (3) are gone up and are linked firmly wave board (4), and the trough of wave board (4) is located No. two curved surfaces (3) middle part position department, shell (1) both sides all are provided with inlet (5).

2. A hydraulic motor housing according to claim 1, wherein: the wave trough of wave plate (4) department is provided with arc (6), and the one side that arc (6) are close to shell (1) has linked firmly return spring (7), and the return spring (7) other end links firmly on the wall thickness of shell (1).

3. A hydraulic motor housing according to claim 2, wherein: one side of the arc-shaped plate (6) close to the shell (1) is provided with an oil storage tank (8), one side of the arc-shaped plate (6) far away from the shell (1) is provided with a through hole (9), and the through hole (9) is communicated with the oil storage tank (8).

4. A hydraulic motor housing according to claim 3, wherein: the wave-shaped corrugated board is characterized in that connecting plates (10) are connected to two ends of the arc-shaped board (6), the connecting plates (10) are in a multi-section type, two adjacent sections are hinged, and one end, far away from the arc-shaped board (6), of each connecting plate (10) is connected to the wave crest of the wave-shaped corrugated board (4).

5. A hydraulic motor housing according to claim 3, wherein: guiding gutter (11) have all been seted up on four edges of oil storage tank (8) arc (6), the width that guiding gutter (11) are located arc (6) side department is less than the width that is located oil storage tank (8) department.

6. A hydraulic motor housing according to claim 1, wherein: reinforcing ribs (12) are embedded into the joints of the two sides of the wave plate (4) and the inner wall of the shell (1), and the reinforcing ribs (12) are made of chromium carbide.

Technical Field

The invention belongs to the technical field of hydraulic motors, and particularly relates to a hydraulic motor shell.

Background

The hydraulic motor is an actuating element of a hydraulic system, and can convert hydraulic pressure energy provided by a hydraulic pump into mechanical energy of an output shaft of the hydraulic motor, so that the hydraulic motor can drive equipment to rotate. The vane type hydraulic motor is a common hydraulic motor, a rotor of the vane type hydraulic motor is arranged in a stator (namely a shell), a plurality of vanes which can stretch out and draw back along the radial direction are arranged on the rotor, the edges of the vanes are attached to the inner wall of the stator, because the inner wall of the stator is provided with a plurality of sections of first curved surfaces and a plurality of sections of second curved surfaces which are alternately spaced along the circumferential direction, the radiuses of the first curved surfaces and the second curved surfaces are different, the adjacent first curved surfaces and the adjacent second curved surfaces are connected through transition curved surfaces, the transition curved surfaces are provided with openings, high-pressure oil enters the stator through partial openings, the vanes are pushed, and therefore the rotor is driven.

When the blades on the rotor slide on the inner wall of the stator, the friction between the blades and the inner wall of the stator is static friction, even if the inner part of the stator has the lubricating effect of high-pressure oil, when the hydraulic motor is used for a long time, the inner wall of the stator is abraded, so that the curved surface with the smaller radius is enlarged, the blades cannot be attached to the curved surface with the larger radius, the pressure difference between two sides of each blade is reduced, the force for pushing the rotor to rotate by the blades is reduced, and the stability in working is influenced.

Disclosure of Invention

In view of the defects in the prior art, the invention provides a hydraulic motor shell, which mainly solves the problems in the background art by arranging a wave plate at a second curved surface, and when a blade passes through the second curved surface, the second curved surface can rub the wave crest of the wave plate.

In order to achieve the purpose, the invention provides the following technical scheme: a hydraulic motor shell comprises a shell, wherein two sides of the inner wall of the shell are respectively provided with a first curved surface, the inner walls of the top and the bottom of the shell are respectively provided with a second curved surface, the radius of the second curved surface is smaller than that of the first curved surface, a wave plate is fixedly connected to the second curved surface, the wave trough of the wave plate is positioned in the middle of the second curved surface, and liquid inlets are formed in two sides of the shell; when the blade is used for a long time, the first curved surface and the second curved surface are worn, and the blade is far away from the second curved surface than the first curved surface, so that under the condition of same wear, the blade can contact the first curved surface but cannot contact the second curved surface, the pressure difference between two sides of the blade is reduced, the force for pushing the rotor to rotate by the blade is reduced, and the stability in working is influenced, therefore, the wave plate is arranged at the second curved surface, when the blade passes through the second curved surface, the second curved surface can rub with the wave crest of the wave plate, the wear of the second curved surface is reduced, the stability in working is improved, meanwhile, when high-pressure oil pushes the blade to pass through the first wave crest of the wave plate, the horizontal distance between the wave crests and the wave troughs is short, so that the end part of the blade can cross the wave troughs in a short time, and then the end part of the blade can extend to the wave troughs, the contact area of the blade and high-pressure oil is rapidly increased, then the next wave crest is crossed, under the same horizontal length of the second curved surface, compared with the arrangement of one wave crest, after the two wave crests are arranged, the blade can be restored after a smaller rotating angle, the influence of the wave plate on the blade in motion is reduced, the setting of the wave plate on the blade is ensured to be minimized, and the harm of the wave plate on the blade in rotation is smaller than that of the blade which is not in contact with the second curved surface.

Preferably, the wave trough of the wave plate is provided with an arc plate, one side of the arc plate, which is close to the shell, is fixedly connected with a return spring, and the other end of the return spring is fixedly connected to the wall thickness of the shell; at the trough department of wave plate, because the thickness of wave plate trough department is lower, the thrust of the high pressure oil that the blade received is great in trough department simultaneously, consequently be provided with the arc in trough department, can be when the blade gets into the trough, blade and arc friction, reduce the friction to trough department wave plate, the life of wave plate has been improved, simultaneously when the blade extrudees the arc, can compress the return spring who is connected with the arc, after the blade breaks away from the arc, the shake that produces when return spring recovers can make the arc shake, shake other positions with the material that the arc and blade friction dropped, with the material friction that drops when preventing next blade from arriving, to the wearing and tearing of blade tip, the life of blade has been improved.

Preferably, an oil storage groove is formed in one surface, close to the shell, of the arc-shaped plate, a through hole is formed in one surface, far away from the shell, of the arc-shaped plate, and the through hole is communicated with the oil storage groove; when the arc plate and the material that the blade friction dropped when the middle part gathering of arc plate, at return spring's shake in-process, the trough department that the trough department of wave plate was entered into from the through-hole to the part of the material that drops made, make the gathering of the trough department of the material that drops, when the blade passes through the arc plate, the arc plate was pressed and is pasted tight wave plate, and then the oil storage tank of seting up on the arc plate can carry out the shade to the material that drops of gathering, can guarantee that the arc plate pastes tight wave plate.

Preferably, the two ends of the arc-shaped plate are both connected with connecting plates, the connecting plates are in a multi-section type, the two adjacent sections are hinged, and one end, far away from the arc-shaped plate, of each connecting plate is connected to the wave crest of the wave plate; the connecting plate of multistage formula at arc both ends to adjacent two sections are articulated, can guarantee that the blade passes through the crest of wave board and to the trough operation of wave board, and the blade is smooth extrudees the arc and pastes tight wave board under the effect of connecting plate, and the junction of adjacent two sections of connecting plate all can be protruding to nearest shell inner wall's direction simultaneously, reduces the pushing down of connecting plate tip to arc plate tip, prevents that the junction of connecting plate and arc from taking place to become flexible.

Preferably, the arc-shaped plates at the four corners of the oil storage tank are provided with guide grooves, and the width of the guide grooves at the side edges of the arc-shaped plates is smaller than that at the oil storage tank; the falling substances enter the wave plate trough through the through hole, the falling substances can be attached to the wave plate tightly in the process of the arc plate, when the arc plate extrudes high-pressure oil in the guide groove, the high-pressure oil is extruded from the guide groove, and meanwhile, a part of the falling substances are carried to be kept away from the guide groove to the four corners of the arc plate, so that the residues of the falling substances in the arc plate are reduced, and the falling substances are prevented from reaching the surface of the arc plate through the through hole when more substances are dropped.

Preferably, reinforcing ribs are embedded at the joints of the two sides of the wave plate and the inner wall of the shell, and the reinforcing ribs are made of chromium carbide; the connecting parts of the two sides of the wave plate and the inner wall of the shell are in contact with the wave plate firstly, and the thickness of the connecting parts is thinner, so that the reinforcing ribs made of chromium carbide are arranged at the connecting parts, the abrasion of the connecting parts is reduced, the weakest part of the wave plate connected with the second curved surface is protected, and the loosening probability between the wave plate and the second curved surface is reduced.

The invention has the technical effects and advantages that:

1. according to the hydraulic motor shell, the wave plate is arranged at the second curved surface, when the blade passes through the second curved surface, the second curved surface can rub with the wave crest of the wave plate, abrasion of the second curved surface is reduced, and stability in working is improved.

2. According to the hydraulic motor shell, the arc-shaped plates are arranged at the wave troughs, so that when the blades enter the wave troughs, the blades and the arc-shaped plates can rub, the friction of a wave plate at the wave troughs is reduced, and the service life of the wave plate is prolonged.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a principal cross-sectional view of the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 3 according to the present invention;

FIG. 5 is a schematic view of an arcuate plate configuration;

in the figure: the device comprises a shell 1, a first curved surface 2, a second curved surface 3, a wave plate 4, a liquid inlet 5, an arc-shaped plate 6, a return spring 7, an oil storage tank 8, a through hole 9, a connecting plate 10, a flow guide groove 11 and reinforcing ribs 12.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-5, the hydraulic motor casing according to the present invention includes a casing 1, wherein a first curved surface 2 is disposed on each of two sides of an inner wall of the casing 1, a second curved surface 3 is disposed on each of a top inner wall and a bottom inner wall of the casing 1, a radius of the second curved surface 3 is smaller than a radius of the first curved surface 2, a wave plate 4 is fixedly connected to the second curved surface 3, a wave trough of the wave plate 4 is located at a middle position of the second curved surface 3, and a liquid inlet 5 is disposed on each of two sides of the casing 1; when the blade is in work, after the blade is used for a long time, the first curved surface 2 and the second curved surface 3 are worn, because the blade is far away from the second curved surface 3 than the first curved surface 2, under the condition of same wear, the blade can contact the first curved surface 2 but can not contact the second curved surface 3, so that the pressure difference between two sides of the blade is reduced, the force for pushing the rotor to rotate by the blade is reduced, and the stability in work is influenced, therefore, the wave plate 4 is arranged at the second curved surface 3, when the blade passes through the second curved surface 3, the second curved surface 3 can rub with the wave crest of the wave plate 4, the wear of the second curved surface 3 is reduced, the stability in work is improved, meanwhile, when the high-pressure oil pushes the blade to pass through the first wave crest of the wave plate 4, because the horizontal distance between the wave troughs is short, the end of the blade can cross the wave trough in a short time, and the end of the blade can extend to the wave trough of the wave plate 4, the contact area of the blade and high-pressure oil is rapidly increased, then the next wave crest is crossed, under the same horizontal length of the second curved surface 3, compared with the arrangement of one wave crest, after the two wave crests are arranged, the blade can be restored after a smaller rotating angle, the influence of the wave plate 4 on the blade in the motion process is reduced, the setting of the wave plate 4 on the blade rotating side effect is ensured to be reduced to the minimum, and the harm of the wave plate 4 on the blade rotating side effect is smaller than that of the blade not in contact with the second curved surface 3.

An arc-shaped plate 6 is arranged at the wave trough of the wave plate 4, one surface of the arc-shaped plate 6, which is close to the shell 1, is fixedly connected with a return spring 7, and the other end of the return spring 7 is fixedly connected with the wall thickness of the shell 1; at the trough department of wave board 4, because the thickness of wave board 4 trough department is lower, the thrust of the high pressure oil that the blade received is great in trough department simultaneously, consequently be provided with arc 6 in trough department, can be when the blade gets into the trough, the blade rubs with arc 6, reduce the friction to wave board 4 of trough department, wave board 4's life has been improved, simultaneously when the blade extrudees arc 6, can compress return spring 7 be connected with arc 6, after the blade breaks away from arc 6, the shake that produces when return spring 7 recovers can make arc 6 shake, shake the material that arc 6 and blade friction dropped to other positions, with the material friction that drops when preventing next blade from arriving, to the wearing and tearing of blade tip, the life of blade has been improved.

An oil storage tank 8 is arranged on one surface, close to the shell 1, of the arc-shaped plate 6, a through hole 9 is formed in one surface, far away from the shell 1, of the arc-shaped plate 6, and the through hole 9 is communicated with the oil storage tank 8; when the arc 6 and the material that the blade friction dropped when the middle part gathering of arc 6, at return spring 7 shake the in-process, the partly trough department that enters into wave board 4 from through-hole 9 of the material that drops makes the partly gathering in trough department of the material that drops, when the blade passes through arc 6, arc 6 is pressed and pastes tight wave board 4, and then the oil storage tank 8 of seting up on the arc 6 can carry out the shade to the material that drops of gathering, can guarantee that arc 6 pastes tight wave board 4.

The two ends of the arc-shaped plate 6 are both connected with connecting plates 10, the connecting plates 10 are in a multi-section type, two adjacent sections are hinged, and one end, far away from the arc-shaped plate 6, of each connecting plate 10 is connected to the wave crest of the wave plate 4; the connecting plates 10 of the multistage formula at the both ends of the arc 6 to adjacent two sections are articulated, can guarantee that the blade passes through the crest of wave 4 and when moving to the trough of wave 4, the blade is smooth to extrude the arc 6 and is pasted tight wave 4 under the effect of connecting plate 10, and the junction of adjacent two sections of connecting plate 10 all can be protruding to the nearest direction of shell 1 inner wall simultaneously, reduces the pushing down of connecting plate 10 tip to the tip of arc 6, prevents that the junction of connecting plate 10 and arc 6 from taking place to become flexible.

The arc-shaped plates 6 at the four corners of the oil storage tank 8 are all provided with guide grooves 11, and the width of the guide grooves 11 at the side edges of the arc-shaped plates 6 is smaller than that at the oil storage tank 8; get into the material that drops of 4 wave plates trough department through-hole 9, can paste the in-process of tight wave plates 4 at arc 6, the material that drops can be when the high pressure oil of arc 6 extrusion guiding gutter 11, high pressure oil is extruded from guiding gutter 11, carry partly material that drop simultaneously and keep away from to 6 four corners departments of arc from guiding gutter 11, the material that has reduced to drop is in the remaining of 6 departments of arc, when the material that prevents to drop is more, reach the 6 surfaces of arc from through-hole 9.

Reinforcing ribs 12 are embedded at the joints of the two sides of the wave plate 4 and the inner wall of the shell 1, and the reinforcing ribs 12 are made of chromium carbide; the connection parts of the two sides of the wave plate 4 and the inner wall of the shell 1 are the parts where the blades are firstly contacted with the wave plate 4 and the thickness of the connection parts is thinner, so that the reinforcing ribs 12 made of chromium carbide are arranged at the connection parts, the abrasion of the connection parts is reduced, the weakest part where the wave plate 4 is connected with the second curved surface 3 is protected, and the loosening probability between the wave plate 4 and the second curved surface 3 is reduced.

When the blade is in work, after the blade is used for a long time, the first curved surface 2 and the second curved surface 3 are worn, because the blade is far away from the second curved surface 3 than the first curved surface 2, under the condition of same wear, the blade can contact the first curved surface 2 but can not contact the second curved surface 3, so that the pressure difference between two sides of the blade is reduced, the force for pushing the rotor to rotate by the blade is reduced, and the stability in work is influenced, therefore, the wave plate 4 is arranged at the second curved surface 3, when the blade passes through the second curved surface 3, the second curved surface 3 can rub with the wave crest of the wave plate 4, the wear of the second curved surface 3 is reduced, the stability in work is improved, meanwhile, when the high-pressure oil pushes the blade to pass through the first wave crest of the wave plate 4, because the horizontal distance between the wave troughs is short, the end of the blade can cross the wave trough in a short time, and the end of the blade can extend to the wave trough of the wave plate 4, the contact area of the blade and high-pressure oil is rapidly increased, then the next wave crest is crossed, under the same horizontal length of the second curved surface 3, compared with the arrangement of one wave crest, after the two wave crests are arranged, the blade can be restored after a smaller rotating angle, the influence of the wave plate 4 on the blade in the motion process is reduced, the setting of the wave plate 4 on the blade rotating side effect is ensured to be reduced to the minimum, and the harm of the wave plate 4 on the blade rotating side effect is smaller than that of the blade not in contact with the second curved surface 3.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.