CN215890953U - Vibration reduction structure and forklift with same - Google Patents

Abstract

The utility model provides a vibration damping structure and a forklift with the same, wherein the vibration damping structure comprises a mounting plate, a connecting column, a first vibration damping piece, a second vibration damping piece and a limiting piece, and a connecting hole is formed in the mounting plate; the connecting column is arranged in the connecting hole in a penetrating manner, and the first end of the connecting column is suitable for being connected to a position to be installed; the first vibration damping piece is arranged on the connecting column and is positioned on one side of the mounting plate; the second vibration damping piece is arranged on the connecting column and is positioned on the other side of the mounting plate; the locating part sets up and cooperates with second damping piece at the second end of spliced pole. The first vibration damping piece and the second vibration damping piece can buffer up-and-down vibration of the mounting plate, so that the technical scheme provided by the utility model overcomes the defects that the oil pump motor of the electric forklift in the prior art is not reasonably provided with a vibration isolation structure, so that the loss and the failure of parts of the oil pump motor are accelerated, and the use experience of the electric forklift is poor.

Description

Vibration reduction structure and forklift with same

Technical Field

The utility model relates to the technical field of transfer equipment, in particular to a vibration damping structure and a forklift with the same.

Background

In recent years, with the vigorous development of new energy, electromotion, intellectualization and automation in China, the electric forklift is widely applied with the advantages of stable operation, no noise, energy conservation, environmental protection, convenient maintenance, lower operation cost, convenient operation and the like, occupies an important position in the material handling industry, and has good future development prospect.

The oil pump motor is a hydraulic power source spring of the whole electric forklift, and the function and the action of the oil pump motor determine that the oil pump motor is not only an excitation source but also a vibration-receiving object needing vibration isolation. Electric fork truck among the prior art does not carry out rationalization vibration isolation design to oil pump motor department, still adopts traditional rigid connection structure to be connected oil pump motor and frame or automobile body. Therefore, when the electric forklift runs, the generated vibration can be directly transmitted to the oil pump motor, and acceleration loss and failure of parts in the oil pump motor and external fasteners are caused, and simultaneously NVH indexes of the electric forklift are also influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the oil pump motor of the electric forklift in the prior art is not reasonably provided with a vibration isolation structure, so that the loss and the failure of parts of the oil pump motor are accelerated, and the use experience of the electric forklift is poor, so that the vibration damping structure and the forklift with the same are provided.

In order to solve the problems, the utility model provides a vibration damping structure which comprises a mounting plate, a connecting column, a first vibration damping piece, a second vibration damping piece and a limiting piece, wherein the mounting plate is provided with a connecting hole; the connecting column is arranged in the connecting hole in a penetrating manner, and the first end of the connecting column is suitable for being connected to a position to be installed; the first vibration damping piece is arranged on the connecting column and is positioned on one side of the mounting plate; the second vibration damping piece is arranged on the connecting column and is positioned on the other side of the mounting plate; the locating part sets up and cooperates with second damping piece at the second end of spliced pole.

Optionally, the vibration damping structure further comprises a connecting sleeve, the connecting sleeve is sleeved outside the connecting column and penetrates through the connecting hole, the lower end of the connecting sleeve is matched with the surface of the to-be-installed position, the lower surface of the limiting part is matched with the upper end of the connecting sleeve, and the first vibration damping part and the second vibration damping part are sleeved outside the connecting sleeve.

Optionally, the damping structure further comprises a third damping member (80), the third damping member is connected above the first damping member, and the third damping member is located between the inner wall of the connecting hole and the outer wall of the connecting sleeve.

Optionally, the first vibration damping member and the connecting sleeve are fixedly connected together.

Optionally, the first damping member and the connecting sleeve are connected together by a vulcanization process.

Optionally, the upper end of the connecting column is provided with a positioning head, and the limiting part is clamped between the lower surface of the positioning head and the upper end of the connecting sleeve.

Optionally, the limiting part is a limiting plate, a mounting hole is formed in the limiting plate, and the limiting plate is sleeved outside the connecting column through the mounting hole.

Optionally, the connecting column is a connecting bolt, and a fastener is arranged at the lower end of the connecting bolt.

Optionally, the fastener comprises a washer and a fastening nut.

The utility model also provides a forklift, which comprises a forklift body and the oil pump motor arranged on the forklift body, wherein the vibration damping structure is arranged between the forklift body and the oil pump motor, the oil pump motor is arranged on the mounting plate, and the lower end of the connecting column is connected with the forklift body.

The utility model has the following advantages:

by utilizing the technical scheme of the utility model, the oil pump motor is arranged on the mounting plate, and the lower end of the connecting column is connected with the body or the frame of the electric forklift. When electric fork truck moved, the vibration of production can make the mounting panel vibrate along the extending direction of spliced pole, because the below and the top of mounting panel are provided with first damping piece and second damping piece respectively, consequently the vibration of mounting panel can be absorbed by first damping piece and second damping piece to alleviate oil pump motor's vibration greatly. Therefore, the technical scheme of the utility model overcomes the defects that the oil pump motor of the electric forklift in the prior art is not reasonably provided with a vibration isolation structure, so that the loss and the failure of parts of the oil pump motor are accelerated, and the use experience of the electric forklift is poor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 shows a schematic structural view of the vibration damping structure of the present invention.

Description of reference numerals:

10. mounting a plate; 11. connecting holes; 20. connecting columns; 21. positioning the head; 30. a first damping member; 31. a large diameter section; 32. a small diameter section; 40. a second damping member; 50. a limiting member; 51. mounting holes; 60. connecting sleeves; 70. a fastener; 71. a gasket; 72. fastening a nut; 80. a third damping member; 100. a vehicle body.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the damping structure of the present embodiment includes a mounting plate 10, a connecting column 20, a first damping member 30, a second damping member 40, and a limiting member 50. Wherein, the mounting plate 10 is provided with a connecting hole 11. The connecting column 20 is arranged in the connecting hole 11 in a penetrating mode, and the first end of the connecting column 20 is suitable for being connected to a position to be installed. The first damper 30 is provided on the connection pole 20 at one side of the mounting plate 10. A second damping member 40 is provided on the connection post 20 at the other side of the mounting plate 10. The limiting member 50 is disposed at the second end of the connecting column 20 and is engaged with the second damping member 40.

With the technical scheme of this embodiment, install the oil pump motor on mounting panel 10 to make the lower extreme of spliced pole 20 and electric fork truck's automobile body or frame connect. When the electric forklift operates, the generated vibration may cause the mounting plate 10 to vibrate along the extending direction of the coupling post 20, and since the first and second vibration dampers 30 and 40 are respectively provided below and above the mounting plate 10, the vibration of the mounting plate 10 may be absorbed by the first and second vibration dampers 30 and 40, thereby greatly reducing the vibration of the oil pump motor. Consequently the technical scheme of this embodiment has solved electric fork truck's among the prior art oil pump motor and has not rationally set up the vibration isolation structure, leads to the spare part loss and the inefficacy of oil pump motor to accelerate to and electric fork truck's use experiences poor defect.

Of course, the above-described vibration damping structure may also be applied to other mechanical vibration damping scenarios, for example, the vibration damping structure may also damp structures such as a mechanical engine and a liquid tank.

It should be noted that the vibration damping structure in the present embodiment is mainly used for damping vertical and horizontal vibrations. Therefore, the first end of the connecting column 20 is the lower end, and the second end of the connecting column 20 is the upper end. The first damping member 30 is disposed below the mounting plate 10, and the second damping member 40 is disposed above the mounting plate 10. It will be understood by those skilled in the art that when the vibration damping structure is used for damping vibration in the left-right direction, the vibration damping structure in fig. 1 may be placed horizontally, and in this case, the above-mentioned directions (end portions) correspond to the left-right direction (left and right ends).

Note that the first damper 30 and the second damper 40 in the present embodiment are provided on the lower side and the upper side of the mounting plate 10, respectively. Since the lower end of the connection post 20 is connected with the site to be installed, the first vibration damper 30 is actually interposed between the lower surface of the mounting plate 10 and the surface of the site to be installed. The stopper 50 is used to limit the position above the second damper 40. Therefore, when the mounting plate 10 vibrates upward, the vibration is absorbed by the second vibration absorbing member 40, and when the mounting plate 10 vibrates downward, the vibration is absorbed by the first vibration absorbing member 30.

As shown in fig. 1, in the solution of this embodiment, the damping structure further includes a connection sleeve 60. The connecting sleeve 60 is sleeved outside the connecting column 20 and penetrates through the connecting hole 11, the lower end of the connecting sleeve 60 is matched with the surface of the position to be installed, the lower surface of the limiting part 50 is matched with the upper end of the connecting sleeve 60, and the first vibration damping part 30 and the second vibration damping part 40 are both sleeved outside the connecting sleeve 60. Specifically, the connecting sleeve 60 in this embodiment is made of metal, and is preferably a steel sleeve. The first and second damping members 30, 40 are both of annular construction, and preferably both are made of rubber. The upper end of the connecting sleeve 60 can limit the downward movement of the limiting member 50, and the second damping member 40 is interposed between the lower surface of the limiting member 50 and the upper surface of the mounting plate 10.

As shown in fig. 1, in the solution of the present embodiment, the damping structure further includes a third damping member 80, the third damping member 80 is connected above the first damping member 30, and the third damping member 80 is located between the inner wall of the connection hole 11 and the outer wall of the connection sleeve 60. Specifically, the inner diameter of the third damping member 80 is larger than the outer diameter of the connection sleeve 60, and the outer diameter of the third damping member 80 is smaller than the diameter of the connection hole, so that the third damping member 80 is interposed between the connection sleeve 60 and the inner wall of the connection hole 11. When the mounting plate 10 generates transverse displacement, the third vibration reduction part 80 can absorb the vibration of the mounting plate 10, and the mounting plate 10 is prevented from directly colliding with the connecting column 20, so that the vibration reduction effect is achieved on the transverse movement of the oil pump motor.

Further, in the present embodiment, the third damping member 80 and the first damping member 30 are an integral structure, so the first damping member 30 can also be regarded as a stepped sleeve structure. As can be seen from fig. 1, the first damper 30 includes a large diameter section 31 and a small diameter section 32, wherein the large diameter section 31 is located below the mounting plate 10, the small diameter section 32 is located between the inner wall of the connecting hole 11 and the outer wall of the connecting sleeve 60, and the small diameter section 32 forms the third damper 80.

Further, a stepped surface is formed between the large-diameter section 31 and the small-diameter section 32, and the stepped surface abuts against the lower surface of the mounting plate 10. When the mounting plate 10 moves downward, the large diameter section 31 is compressed in the vertical direction, thereby having a vibration damping effect on the downward vibration of the oil pump motor.

As shown in fig. 1, in the solution of the present embodiment, the first damping member 30 and the third damping member 80 are fixedly connected to the connecting sleeve 60. And preferably, the first and third damping members 30 and 80 are coupled with the connection sleeve 60 through a vulcanization process. The above arrangement facilitates the installation of the first and third damping members 30 and 80 with the connecting sleeve 60. In some other embodiments, not shown, the first and third damping members 30, 80 may be connected to the connection sleeve 60 by other means, such as by adhesive, fasteners, etc.

As shown in fig. 1, in the solution of the present embodiment, the upper end of the connecting column 20 is provided with a positioning head 21, and the limiting member 50 is sandwiched between the lower surface of the positioning head 21 and the upper end of the connecting sleeve 60. Specifically, the positioning head 21 can limit the movement of the limiting member 50 in the upward direction, so that the position of the limiting member 50 is fixed by the positioning head 21 and the connection sleeve 60. Therefore, when the mounting plate 10 vibrates upward, the second vibration attenuating member 40 is compressed, thereby absorbing the vibration generated upward by the oil pump motor.

As shown in fig. 1, in the technical solution of this embodiment, the limiting member 50 is a limiting plate, a mounting hole 51 is formed on the limiting plate, and the limiting plate is sleeved outside the connecting column 20 through the mounting hole 51. Specifically, the upper surface of the stopper plate abuts against the lower surface of the positioning head 21, and the lower surface of the stopper plate abuts against the upper end of the adapter sleeve 60, so that the stopper plate is interposed between the positioning head 21 and the adapter sleeve 60.

As shown in fig. 1, in the solution of the present embodiment, the connection column 20 is a connection bolt, and a fastening member 70 is disposed at a lower end of the connection bolt. Specifically, the positioning head 21 is a bolt head of a connecting bolt, a threaded section is provided at a lower end of the connecting bolt, and the fastening member 70 is provided on the threaded section.

Preferably, the fastener 70 includes a washer 71 and a fastening nut 72. Specifically, a through hole is formed in the position to be installed, the lower portion of the connecting bolt penetrates through the through hole in the position to be installed, the gasket 71 is sleeved outside the connecting bolt, and the fastening nut 72 is fastened and connected to the threaded section of the connecting bolt.

The embodiment also provides a forklift, which comprises a forklift body 100 and an oil pump motor arranged on the forklift body 100, wherein the damping structure is arranged between the forklift body 100 and the oil pump motor, the oil pump motor is arranged on the mounting plate 10, and the lower end of the connecting column 20 is connected with the forklift body 100.

According to the above description, the mounting process of the vibration damping structure in the present embodiment is as follows:

1. before the oil pump motor is installed, the mounting plate 10 is connected with the oil pump motor;

2. the first damping member 30 and the connection sleeve 60 are placed on the mounting hole of the vehicle body 100 and pass through the connection hole of the mounting plate 10;

3. the second vibration damper 40 is arranged on the mounting plate 10 and is sleeved on the connecting sleeve 60;

4. placing the limiting member 50 on the upper second damping member 40;

5. placing the gasket 71 under the mounting hole of the vehicle body 100;

6. the hole patterns in each structure are aligned, the connecting bolts are threaded, and the nuts 72 are tightened with a specified tightening torque.

According to the above description, the vibration damping structure of the present patent application has the following advantages:

1. the vibration reduction structure occupies a small space and is beneficial to arrangement;

2. damping structure has effectively cushioned through the elastic deformation of first damping piece and second damping piece:

(1) inertia force and inertia moment generated by rotation in the oil pump motor;

(2) the vertical impact force of the uneven road surface and the road surface borne by the wheels;

(3) longitudinal and lateral dynamic forces and comprehensive working condition moments generated by vehicle acceleration, braking and turning;

3. the vibration reduction structure effectively solves the problem of frame or vehicle body resonance or high-frequency noise caused by chassis excitation, improves the NVH of the whole vehicle and improves the customer experience;

4. the vibration damping structure effectively attenuates the vibration at the oil pump motor, improves the application environment of the oil pump motor and the surrounding environment thereof, reduces the loss of the oil pump motor and key parts in the oil pump motor, increases the durability of the frame, directly prolongs the service life of the oil pump motor, indirectly increases the life cycle of the whole vehicle and reduces the comprehensive use cost of the whole vehicle;

5. the vibration reduction structure is convenient to install, and the assembling time is hardly influenced; after long-term use, the maintenance is carried out only by replacing the first vibration damping piece and the second vibration damping piece;

6. the damping structure can specifically design and debug the technical indexes such as rigidity and hardness of rubber of the first damping piece and the second damping piece according to the weight and power parameters of the oil pump motor, the road popularity of the use environment and the NVH result after application so as to achieve the optimal damping performance.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (10)

1. A vibration damping structure characterized by comprising:

the mounting plate (10), the mounting plate (10) is provided with a connecting hole (11);

the connecting column (20) is arranged in the connecting hole (11) in a penetrating mode, and the first end of the connecting column (20) is suitable for being connected to a position to be installed;

a first damping member (30) provided on the connection column (20) and located at one side of the mounting plate (10);

a second vibration damper (40) provided on the connection column (20) and located at the other side of the mounting plate (10);

and the limiting part (50) is arranged at the second end of the connecting column (20) and is matched with the second vibration damping part (40).

2. The vibration damping structure according to claim 1, further comprising a connecting sleeve (60), wherein the connecting sleeve (60) is sleeved outside the connecting column (20) and penetrates through the connecting hole (11), the lower end of the connecting sleeve (60) is matched with the surface of the to-be-installed position, the lower surface of the limiting part (50) is matched with the upper end of the connecting sleeve (60), and the first vibration damping part (30) and the second vibration damping part (40) are sleeved outside the connecting sleeve (60).

3. The vibration damping structure according to claim 2, characterized in that the vibration damping structure further comprises a third vibration damping member (80), the third vibration damping member (80) is attached to a side of the first vibration damping member (30) facing the mounting plate (10), and the third vibration damping member (80) is located between an inner wall of the attachment hole (11) and an outer wall of the attachment sleeve (60).

4. The vibration damping arrangement according to claim 3, characterized in that the first vibration damping part (30) and the third vibration damping part (80) are fixedly connected with the connecting sleeve (60).

5. The vibration damping arrangement according to claim 4, characterized in that the first vibration damping part (30) and the third vibration damping part (80) are fixedly connected to the connecting sleeve (60) by means of a vulcanization process.

6. The vibration damping structure according to claim 2, wherein a positioning head (21) is arranged at the upper end of the connecting column (20), and the limiting member (50) is clamped between the lower surface of the positioning head (21) and the upper end of the connecting sleeve (60).

7. The vibration damping structure according to claim 2 or 6, wherein the limiting member (50) is a limiting plate, a mounting hole (51) is formed in the limiting plate, and the limiting plate is sleeved outside the connecting column (20) through the mounting hole (51).

8. The vibration damping structure according to claim 1, characterized in that the connecting column (20) is a connecting bolt provided at its lower end with a fastener (70).

9. The vibration damping structure according to claim 8, characterized in that the fastener (70) includes a washer (71) and a fastening nut (72).

10. A forklift truck characterized by comprising a truck body (100) and an oil pump motor provided on the truck body (100), a vibration damping structure according to any one of claims 1 to 9 being provided between the truck body (100) and the oil pump motor, the oil pump motor being provided on the mounting plate (10), the lower end of the joint post (20) being connected to the truck body (100).

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