CN218093335U - Supporting device for tandem pump and engineering machinery - Google Patents

Abstract

The utility model relates to a supporting arrangement of cluster pump, this supporting arrangement are used for making the cluster pump link to each other with the engine of vehicle to including first supporting mechanism and second supporting mechanism, first supporting mechanism is constructed to make the front end of cluster pump be connected to the casing of shaft coupling rigidly, second supporting mechanism is constructed to support the cluster pump elastically on the frame of vehicle, wherein, the second supporting mechanism is located basically with the tie point of cluster pump the focus department of cluster pump. Through especially providing elastic support at the focus department of cluster pump to the cluster pump, the utility model discloses a problem that probably appears because of cluster pump moment of flexure is big has been solved effectively to the supporting arrangement. The utility model discloses still relate to the engineering machine tool including this kind of supporting arrangement.

Description

Supporting device for tandem pump and engineering machinery

Technical Field

The present invention relates to a bearing arrangement, in particular an elastic bearing arrangement, for connecting an engine of a vehicle to a tandem pump. The invention also relates to a vehicle, in particular a construction machine, having such a bearing arrangement.

Background

In a motor vehicle such as a construction machine, there are a plurality of hydraulic pumps that need to take power from an engine. For this purpose, solutions are known in which all the pumps are connected in series and the engine is directly connected. This direct coupling of the tandem pump to the engine provides improved efficiency and reduced cost as compared to conventional solutions requiring the use of a transfer case. However, this solution suffers from a large bending moment of the string pump and is prone to failure such as oil leakage from the seal of the pump, spline shaft failure, etc.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve the above problems by proposing a supporting device for a cluster pump. The supporting device can connect the series pump with the engine of the vehicle and can effectively avoid the problems of failure and the like caused by large bending moment of the series pump.

In particular, the present invention provides a string pump support device for connecting a string pump to an engine of a vehicle and comprising a first support mechanism configured to rigidly connect a front end of the string pump to a housing of a coupling and a second support mechanism configured to elastically support the string pump on a frame of the vehicle, wherein a connection point of the second support mechanism to the string pump is substantially located at a center of gravity of the string pump.

Through especially providing elastic support to the cluster pump near the focus of cluster pump, the utility model discloses a problem that probably appears because of cluster pump moment of flexure is big has been solved effectively to the supporting arrangement.

In another aspect, the present disclosure provides a construction machine including an engine and a cluster pump, the engine and the cluster pump being connected by a support device as described above.

Drawings

The details of the invention and its advantages are understood by the following description in conjunction with the specific embodiments with reference to the accompanying drawings. In the drawings:

fig. 1 shows a string pump support device according to a preferred embodiment of the invention in a perspective view.

Detailed Description

The technical solution of the present invention is further described in detail by the following examples in conjunction with the accompanying drawings, which are intended to explain the general concept of the present invention and should not be interpreted as limiting the invention.

In the following description, the terms "front" and "rear" are defined with reference to the direction of transmission of torque or power from the engine, wherein the direction close to the torque source or power source, i.e. close to the engine, is referred to as front, and the opposite direction is referred to as rear.

In the case of a series pump connection, the torque is output from the flywheel of the engine and reaches a coupling connected to the output shaft of the engine, which can absorb torsional vibrations, the series pump being connected to the housing of the coupling. Specifically, the string pump may include two or more driving pumps, a working pump connected in series behind the driving pumps, and a supplementary oil pump connected in series behind the working pump, and the like. These pumps can in turn transmit power and minimize the structural length in the power transmission direction. In particular, the two or more drive pumps may be housed in the same housing, in order to simplify the arrangement.

The utility model discloses a supporting arrangement lies in the design of "the front end rigid connection of cluster pump" and "the middle elastic support of cluster pump". The hard connection of the front end of the string pump means that the front end of the string pump (here the drive pump) is rigidly connected to the engine, in particular fixed to the coupling housing by four fixing points. The intermediate elastic support of the string pump means that the string pump is supported on the frame of the vehicle by the elastic support structure in the middle of the string pump, in particular around the center of gravity of the string pump, for example, slightly behind the center of gravity of the string pump. The connection points of the elastic support structure to the string pump and its abutment points on the frame can be located on both sides of the string pump, thereby forming four connection and/or support points.

Referring to fig. 1, the support device of the present invention is intended to connect a cluster pump 100 to the engine (not shown) of a vehicle, in particular to the housing 200 of its coupling. The support arrangement may comprise a first support mechanism 1 and a second support mechanism 2, said first support mechanism 1 may be configured to rigidly connect the string pump 100 to the housing 200 of the coupling, and said second support mechanism 2 may be configured to resiliently support the string pump 100 on a frame (not shown) of the vehicle. In particular, the second support means 2 is positioned to connect the string pump 100 at a position close to the centre of gravity of the string pump 100.

Preferably, the first support means 1 may comprise four (two visible in the figures) fasteners 11, which fasteners 11 may in particular be bolts, and may be screwed into the four corners of the housing end of the string pump 100 for facewise or rigid fixation of the string pump 100 to the housing 200 of the coupling, thereby forming four rigid fixation points at the front end of the string pump 100.

Also preferably, the second support means 2 may comprise two second fastening members 21 and two elastic supports 22. The two second fastening members 21 may be spaced apart in a lateral direction (i.e., a direction perpendicular or transverse to the front-to-back direction) and may be respectively fixed to the string pump 100, thereby forming two connection points between the support device and the string pump 100. The two resilient supports 22 may be arranged on both sides of the string pump 100 and serve to abut the vehicle frame so as to form two resilient support points of the string pump 100 on the vehicle frame.

In particular, as shown in the figures, the second fastening member 21 may be constituted by a bolt, and the elastic support member 22 may include a damping member.

Of course, the second fastening member 21 and/or the resilient support 22 may also have a different form than the embodiment shown in the figures. For example, the resilient support 22 may comprise a spring.

As shown in fig. 1, preferably, the second supporting mechanism 2 may include an intermediate bracket 23 for carrying the two second fastening members 21 and two cantilevers 24 for carrying the two elastic supports 22, respectively. The two cantilevers 24 can be arranged on both sides of the intermediate holder 23 and extend in a lateral direction in a direction away from the intermediate holder 23.

Here, in particular, the two second fastening members 21 may be provided at the top end of the intermediate bracket 23, and the two resilient supports 22 may each be arranged at the free end of one cantilever arm 24 (i.e., the end of the cantilever arm 24 remote from the intermediate bracket 23).

According to the embodiment shown in the figures, the support device of the present invention may further comprise a main support 3, which main support 3 may be used to carry said second support means 2, in particular said intermediate support 23 and cantilever 24. In particular, the main support 3 may be fixed at the front end to the coupling housing 200 and may carry the secondary support means 2 at the rear end (free end) and in the middle.

As can be seen from fig. 1, the main support 3 may have the form of a frame and may comprise two longitudinal plate beams 31 extending in a longitudinal direction (i.e. a front-rear direction) and spaced apart from each other, a transverse plate beam 32 (alternatively referred to as a lateral plate beam) and a transverse web 33 connecting the two longitudinal plate beams 31, and an end plate 34 intended to be fixed to the housing 200 of the coupling, for example by means of bolts.

In this case, the intermediate support 23 of the second support mechanism 2 may be detachably mounted on the lateral link plate 33 at the rear end of the main support 3, and extend from the main support 3 toward the string pump 100 (i.e., upward). The two cantilever arms 24 of the second support mechanism 2 may be detachably mounted to the sides of the two longitudinal plate beams 31 of the main stand 3, respectively, and extend in a direction away from the main stand 3 in a lateral direction (i.e., laterally with respect to the intermediate stand 23 or the tandem pump 100). Specifically, the cantilever 24 may be mounted on the side of the longitudinal plate beam 31 of the main stand 3 at a portion corresponding to the lateral plate beam 32.

Of course, the support device of the present invention may not have the main support 3, but may directly connect the intermediate support 23 and the two suspension arms 24 together and rest on the frame of the vehicle through the elastic support 22.

Preferably, the intermediate bracket 23 may be made of an L-shaped plate. One branch of the L-shaped plate is removably fixed to the transverse web 33 of the main stand 3, for example by means of bolts. The other branch of the L-shaped plate, i.e. the branch thereof close to the string pump 100, has two lugs 231 at the end (upper end in fig. 1), which lugs 231 are separated in the lateral direction and each carry a second fastener 21. When the second fasteners 21 are formed by bolts, the intermediate bracket 23 may be secured to the string pump 100 by said bolts extending through holes in said lugs 231, thereby forming two connection or support points with the string pump 100.

Also preferably, the cantilever 24 may be constructed of a bent plate. One end of the bent plate is detachably mounted on the longitudinal plate beam 31 of the main stand 3, for example, by means of bolts. The other free end of the bent plate may carry a resilient support 22, for example in the form of a damping member.

Advantageously, triangular stiffening ribs may be arranged at the bends of the bent plates constituting the cantilever 24, in order to ensure the structural stability of the bent plates or of the cantilever 24.

Advantageously, the characteristic parameters of said elastic support 22, such as its stiffness or elastic modulus, etc., can be defined according to the modes of the engine and the string pump 100, so that the string pump 100 is at the same frequency and amplitude as the vibrations of the engine.

Of course, the configuration or dimensions of the boom 24, such as the size of the overhanging portion of the boom 24, may also be designed or determined based on the mode shape of the engine and the cluster pump 100.

INDUSTRIAL APPLICABILITY

By means of the support device of the present invention, the connection between the string pump 100 and the engine and the connection between the string pump 100 and the connection between the elastic support structure and the frame can form a substantially hexahedral shape or a box shape. Thus, the string pump 100 is firmly supported by the supporting device of the box structure at the front end and the middle part by the supporting device, and the mounting stability and the operational reliability of the string pump 100 are ensured.

The utility model discloses a supporting arrangement makes this cluster pump 100 and engine rigid connection at the front end of cluster pump 100 to near the barycentric position of cluster pump 100 provides elastic support for this cluster pump 100, from this adapt to the fact that the engine is elastic connection usually on the frame of vehicle, both fully considered the elastic connection's of engine rigidity, fully considered the mode of engine and cluster pump again, prevented from leading to the cluster pump to be broken off with the fingers and thumb because of the mode nonconformity from this, avoided probably because of the too big trouble that leads to of moment of torsion.

Although the present general inventive concept has been described in conjunction with the embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the embodiments without departing from the principles and spirit of the general inventive concept.

Claims (10)

1. A support device for a cluster pump for connecting the cluster pump (100) to an engine of a vehicle, characterized in that it comprises:

-a first support mechanism (1) configured to rigidly connect the front end of the string pump to the housing (200) of the coupling;

-second support means (2) configured to elastically support the string pump on the frame of the vehicle, wherein the connection point of the second support means to the string pump is located substantially at the centre of gravity of the string pump.

2. A support arrangement as claimed in claim 1, characterised in that the first support means (1) comprises four first fastening members (11) arranged to secure a string of pumps (100) to a coupling housing (200) at their corners; the second support means (2) comprise two second fastening members (21) intended to be respectively connected to the string pump, and two elastic support members (22) arranged to be elastically supported against the frame on both sides of the string pump.

3. The support device of claim 2, wherein the first fastener (11) and the second fastener (21) comprise bolts; the resilient support (22) comprises a damping member.

4. A supporting installation as claimed in claim 2 or 3, characterised in that the second supporting means (2) comprise an intermediate bracket (23) carrying the two second fastening members (21) and two cantilevers (24) extending laterally with respect to the intermediate bracket, which respectively carry the two resilient supports (22).

5. A support device as claimed in claim 4, and further comprising a main support (3) for carrying the second support means (2) and arranged to be secured at a front end to a housing (200) of a coupling.

6. Support device as in claim 5, characterized in that said intermediate bracket (23) is made of an L-shaped plate, one branch of which has at the end a separate lug (231) for carrying said two second fasteners (21) and the other branch of which is removably fixed to said main bracket (3).

7. Support device as claimed in claim 5, characterized in that said cantilever (24) is constituted by a bent plate, one end of which is removably fixed to said main support (3) and the other end of which carries said elastic support (22).

8. The supporting installation according to claim 2 or 3, characterized in that the characteristic parameters of the elastic support (22) are defined according to the mode shape of the engine and the cluster pump (100).

9. A working machine comprising an engine and a cluster pump (100), characterized in that the engine and the cluster pump are connected by a support arrangement according to one of the preceding claims.

10. A working machine according to claim 9, characterized in that the tandem pump (100) comprises two drive pumps arranged in one and the same housing.

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