CN107401477A - Hydraulic motor, engineering machinery and the agricultural machinery of adjustable displacement - Google Patents

Abstract

The present invention relates to a hydraulic motor with adjustable displacement and construction machinery equipped with the hydraulic motor. The hydraulic motor comprises: a motor casing; a main shaft arranged in the motor casing; a main shaft arranged in the motor casing and A plunger located radially outside the main shaft; a swash plate set in the motor housing and sheathed on the main shaft; wherein, the hydraulic motor can be detachably installed with rows of various inclination angles volume adjustment block, so that the swash plate is connected between the inclined surface of the displacement adjustment block and the end of the plunger, and displacement adjustment blocks at various inclination angles are installed in the hydraulic motor In the case of , the normal line of the swash plate forms different angles with the central axis of the main shaft.

Description

Adjustable displacement hydraulic motors, construction machinery and agricultural machinery

technical field

The invention relates to the field of hydraulic technology, in particular to a hydraulic motor with adjustable displacement.

Background technique

The displacement of traditional hydraulic quantitative motors is a fixed value, and the displacement cannot be adjusted. Therefore, when the displacement demand is between the displacements of two adjacent quantitative motors, for example, when the actual displacement demand is less than A specification If the displacement of the motor is larger than that of the motor of the B specification, the displacement requirement cannot be met accurately; if a traditional variable motor or a fixed displacement motor with adjustable displacement is used, although it can meet different displacement requirements, its oblique The plate is a movable structure, so a special swash plate angle variable mechanism for adjusting the swash plate angle is required, and the cost is relatively high.

Contents of the invention

The purpose of the present invention is to at least solve one of the above-mentioned technical problems, and this purpose is achieved through the following technical solutions:

The present invention proposes a hydraulic motor with adjustable displacement, and the hydraulic motor includes:

motor housing;

a main shaft disposed within the motor housing;

a plunger disposed within the motor housing and radially outward of the main shaft;

a swash plate disposed in the motor housing and sleeved on the main shaft;

Wherein, the hydraulic motor can be detachably installed with displacement adjustment blocks of various inclination angles, so that the swash plate is connected between the inclined surface of the displacement adjustment block and the end of the plunger In the case that displacement adjustment blocks with various inclination angles are installed in the hydraulic motor, the normal line of the swash plate forms different angles with the central axis of the main shaft.

According to an improvement of the present invention, the swash plate and the displacement adjusting block are connected by screws.

According to another improvement of the present invention, the swash plate is integrally formed with the displacement regulating block.

According to yet another improvement of the present invention, the displacement adjustment block is connected to the motor housing through screws.

Preferably, the displacement adjustment block is marked with the corresponding motor displacement.

The invention also relates to a construction machine equipped with the above-mentioned hydraulic motor with adjustable displacement.

In addition, the present invention also relates to an agricultural machine equipped with the above hydraulic motor with adjustable displacement.

According to the hydraulic motor with adjustable displacement of the present invention, according to different displacement requirements, displacement adjustment blocks of corresponding specifications can be installed inside the motor to realize switching between different values of motor displacement, and the swash plate is a fixed structure , does not require a swash plate angle variable mechanism, has the cost advantage of the original quantitative motor, has a wide range of applications, and has strong applicability. It can be widely used in hydraulic fields such as engineering machinery, agricultural machinery, and industrial equipment.

In particular, after receiving orders from different customers (for example, these orders require different displacements), the manufacturer can quickly install displacement adjustment blocks of different specifications (that is, different inclination angles, that is, different displacements) to the Among the motors that have been produced (without displacement adjustment block), the order can be completed quickly, and the product can be supplied to customers early. The response time is short, the production efficiency is high, and it can also bring good market benefits.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiment. The drawings are only for the purpose of illustrating a preferred embodiment and are not to be considered as limiting the invention. Also throughout the drawings, the same reference numerals are used to designate the same components. In the attached picture:

Fig. 1 shows a schematic assembly diagram of a hydraulic motor with adjustable displacement according to an embodiment of the present invention;

Figure 2a shows a front view of a displacement regulating block of an adjustable displacement hydraulic motor according to an embodiment of the present invention;

Fig. 2b shows a side view of a displacement adjusting block of an adjustable displacement hydraulic motor according to an embodiment of the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

According to the embodiment of the present invention, as shown in FIG. 1 , a hydraulic motor with adjustable displacement is proposed, which includes: a motor housing 5, a main shaft 4 disposed in the motor housing, disposed in the motor housing and located The plunger 3 on the radially outer side of the main shaft and the fixed swash plate 2 set in the motor housing 5 and sleeved on the main shaft 4, the normal line of the swash plate 2 forms a certain angle with the central axis of the main shaft 4 , that is, the angle between the normal of the swash plate and the plunger shown in Figure 1. Wherein, according to the displacement of the hydraulic motor required by the specific working conditions, the hydraulic motor can be equipped with displacement adjustment blocks 1 with various inclination angles (such as the adjustment block angle shown in FIG. 2 ). According to a preferred embodiment of the present invention, as shown in FIG. 2 , the displacement adjustment block 1 is provided with a threaded hole 6 so that the displacement adjustment block can be connected to the motor housing 5 by bolts or screws. For example, a threaded hole corresponding to the threaded hole of the displacement adjustment block 1 is provided at the shoulder position (as shown in Figure 1 ) connected with the displacement adjustment block of the motor housing 5, so that the displacement can be adjusted by screws. Block 1 is connected to motor housing 5 . In addition, according to a preferred embodiment of the present invention, clearance fit is adopted between the motor housing 5 and the displacement adjustment block 1 in the radial direction, so that it is easy to remove when the displacement adjustment block needs to be replaced to change the displacement of the hydraulic motor And install the corresponding displacement adjustment block. For the same purpose, a clearance fit is also adopted between the displacement adjustment block 1 and the main shaft 4 in the radial direction. According to an alternative embodiment of the present invention, an external thread is provided at one end of the displacement adjustment block 1, and an internal thread is provided at the connection part of the corresponding motor housing 5 with the displacement adjustment block 1, so that the The displacement adjustment blocks 1 with different inclination angles are connected to the motor housing 5 in a threaded manner. The swash plate 2 can be connected to the inclined surface of the displacement adjustment block 1 by screws, or the swash plate can be snap-fitted to the displacement adjustment block 1 by setting corresponding engaging parts on the displacement adjustment block 1; in addition, according to this In an advantageous embodiment of the invention, the swash plate 2 can be integrally formed with the displacement adjusting block 1, so as to facilitate installation and use. As shown in FIG. 1 , the main shaft 4 is connected to the motor housing through bearings so as to be rotatable together with the plunger 3 relative to the motor housing 5 and the displacement adjusting block 1 and the swash plate 2 connected to the motor housing.

As shown in Figure 1, in the assembled state, the swash plate 2 is located between the inclined surface of the displacement adjustment block 1 and the end of the plunger 3, so that the displacement adjustment block 1 at various inclination angles is installed to the hydraulic motor In the middle case, the normal line of the swash plate 2 forms different angles with the main shaft 4 or the plunger 3, so that the displacement of the hydraulic motor can be adjusted. In addition, according to an advantageous embodiment of the present invention, as shown in FIG. 1 , the plunger end cooperating with the swash plate 2 is pivotally connected with the plunger body, so that the plunger end can be pivotally adjusted to different inclination angles. Match the displacement adjustment block. In the assembled state, as shown in FIG. 1 , the end of the plunger rests against the end face of the swash plate and is able to slide relative to the stationary swash plate 2 as the plunger 3 rotates with the main shaft 4 .

The corresponding motor displacement can be marked on the displacement adjustment block 1, so that when the displacement of the hydraulic motor needs to be changed, it is only necessary to replace the required displacement adjustment block according to the mark, which is convenient to use. In addition, the difference between the inclination angles of the displacement adjustment blocks of adjacent displacement specifications can be processed to be as small as possible, so as to satisfy the precise adjustment of the displacement of the hydraulic motor. The hydraulic motor with adjustable displacement of the present invention can realize multi-displacement switching, has a wide range of applications, and can be widely used in hydraulic fields such as engineering machinery, agricultural machinery, and industrial equipment.

In particular, after receiving orders from different customers (for example, these orders require different displacements), the manufacturer can quickly install displacement adjustment blocks of different specifications (that is, different inclination angles, that is, different displacements) to the Among the motors that have been produced (without displacement adjustment block), the order can be completed quickly, and the product can be supplied to customers early. The response time is short, the production efficiency is high, and it can also bring good market benefits.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (7)

1. A hydraulic motor with adjustable displacement, characterized in that the hydraulic motor comprises: motor housing; a main shaft disposed within the motor housing; a plunger disposed within the motor housing and radially outward of the main shaft; a swash plate disposed in the motor housing and sleeved on the main shaft; Wherein, the hydraulic motor can be detachably installed with displacement adjustment blocks of various inclination angles, so that the swash plate is connected between the inclined surface of the displacement adjustment block and the end of the plunger In the case that displacement adjustment blocks with various inclination angles are installed in the hydraulic motor, the normal line of the swash plate forms different angles with the central axis of the main shaft. 2. The hydraulic motor with adjustable displacement according to claim 1, characterized in that, the swash plate is connected to the displacement adjusting block by screws. 3 . The hydraulic motor with adjustable displacement according to claim 1 , wherein the swash plate and the displacement adjusting block are integrally formed. 4 . 4. The hydraulic motor with adjustable displacement according to claim 1, characterized in that, the displacement adjusting block is connected to the motor casing by screws. 5. The hydraulic motor with adjustable displacement according to any one of claims 1 to 4, characterized in that the displacement adjustment block is marked with the corresponding motor displacement. 6. A construction machine, characterized in that the construction machine is equipped with the hydraulic motor with adjustable displacement according to any one of claims 1 to 5. 7. An agricultural machine, characterized in that the agricultural machine is equipped with the hydraulic motor with adjustable displacement according to any one of claims 1 to 5.