CN210636500U

CN210636500U - Counter weight device and excavator

Info

Publication number: CN210636500U
Application number: CN201921581684.3U
Authority: CN
Inventors: 郑传德; 邹云川
Original assignee: Shanghai Sany Heavy Machinery Co Ltd
Current assignee: Shanghai Sany Heavy Machinery Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-05-29
Anticipated expiration: 2029-09-23

Abstract

The utility model provides a counter weight device and excavator relates to mechanical counter weight technical field, and this counter weight device sets up on the automobile body, including balancing weight, counter weight platform, driving piece and stand, the counter weight platform is used for setting up and outwards stretches out on the automobile body, and the bottom of balancing weight is rotated and is set up the tip at the counter weight platform, and the stand setting is on the counter weight platform, and the driving piece setting is connected on the upper portion of stand and with the balancing weight transmission for drive the relative counter weight platform rotation of balancing weight, and the rotation center and the focus of balancing weight do not coincide. Compared with the prior art, the utility model provides a counterweight device can be through adjusting the focus position for the holistic stability of excavator obtains guaranteeing, and can adjust the size of digging force, and through the control of hydro-cylinder body, swift, convenient, easy operation. Meanwhile, the balancing weight realizes the adjustment of the gravity center position through rotation, so that the volume of the balancing weight is basically kept unchanged.

Description

Counter weight device and excavator

Technical Field

The utility model relates to a mechanical counter weight technical field particularly, relates to a counter weight device and excavator.

Background

Excavator, loader need install the counterweight on the automobile body when using, come the balanced vehicle, avoid the vehicle to stick up the head or turn on one's side, the counterweight of current excavator, loader casting and filling concrete, the counterweight focus is high, and the position of counterweight can't be adjusted for excavator, loader poor stability when using.

In view of this, it is important to design and manufacture a counterweight device that can adjust the position of the center of gravity in real time, does not increase the counterweight volume, and is convenient and fast to operate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a counter weight device installs on digging the machine, can adjust focus position in real time, and can not increase the counter weight volume, and convenient operation is swift.

Another object of the utility model is to provide an excavator, its focus position that can adjust the counter weight in real time, and can not increase the counter weight volume, convenient operation is swift.

The utility model is realized by adopting the following technical scheme.

In one aspect, the utility model provides a counter weight device sets up on the automobile body, including balancing weight, counter weight platform, driving piece and stand, the counter weight platform is used for setting up and outwards stretches out on the automobile body, and the bottom of balancing weight is rotated and is set up the tip at the counter weight platform, and the stand setting is on the counter weight platform, and the driving piece setting is connected on the upper portion of stand and with the balancing weight transmission for drive the relative counter weight platform rotation of balancing weight, and the rotation center and the focus of balancing weight do not coincide.

Further, a platform pin shaft is arranged at the end part of the counterweight platform, a shaft hole is formed in the bottom of the counterweight block, and the platform pin shaft is in running fit with the shaft hole, so that the counterweight block can rotate around the platform pin shaft.

Furthermore, a limiting block is further arranged on the balancing weight and used for abutting against the balancing weight platform when the balancing weight rotates to the limit position.

Furthermore, the balancing weight is rectangular, and the shaft hole is formed at the bottom corner close to the balancing weight.

Furthermore, one end of the driving piece is hinged with the top of the upright post, and the other end of the driving piece is hinged with the middle part of the balancing weight.

Further, the driving part comprises an oil cylinder body and a piston rod, the oil cylinder body is hinged to the stand column, one end of the piston rod is contained in the oil cylinder body, and the other end of the piston rod is hinged to the balancing weight.

Furthermore, a first hinge support lug is arranged at the top of the upright post, a first hinge shaft is rotatably arranged on the first hinge support lug, and the first hinge shaft is connected with the driving piece; the middle part of balancing weight is provided with the articulated journal stirrup of second, rotates on the articulated journal stirrup of second and is provided with the second articulated shaft, and the second articulated shaft is connected with the driving piece.

Further, the upright post is detachably disposed on the counterweight platform and extends vertically upward.

Furthermore, the lower part of stand an organic whole is provided with the fixed plate, and the fixed plate passes through bolt fixed mounting on the counter weight platform.

In another aspect, the utility model provides an excavator, including the counter weight device, this counter weight device sets up on the automobile body, including balancing weight, counter weight platform, driving piece and stand, the counter weight platform is used for setting up and outwards stretches out on the automobile body, and the bottom of balancing weight is rotated and is set up the tip at the counter weight platform, and the stand setting is on the counter weight platform, and the driving piece setting is connected on the upper portion of stand and with the balancing weight transmission for it rotates to drive the relative counter weight platform of balancing weight, and the center of rotation and the focus of balancing weight do not coincide.

The utility model discloses following beneficial effect has:

the utility model provides a pair of counterweight device, the setting is on the automobile body, rotate the bottom of balancing weight and connect the tip at the balancing weight platform, be provided with the stand on the balancing weight platform, the upper portion of stand is provided with the driving piece, the driving piece is connected with the balancing weight transmission, under the drive of driving piece, the balancing weight can counter weight platform relatively rotate, and because the focus and the rotation center of balancing weight do not coincide, the event is at balancing weight pivoted in-process, the focus can take place to rotate, thereby realized centrobaric back-and-forth movement and reciprocated, and then realized the regulation of barycentric position, realize the barycentric position regulation simultaneously by so through rotating, the event need not to increase or reduce the volume of balancing weight, and adopt the driving piece to drive. Compared with the prior art, the utility model provides a pair of counter weight device can adjust focus position in real time, and can not increase the counter weight volume, and convenient operation is swift.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a counterweight device according to a first embodiment of the present invention at a first viewing angle;

fig. 2 is a schematic partial structural view of a counterweight device according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view of the weight member shown in FIG. 1;

fig. 4 is a schematic structural diagram of a counterweight device according to a second embodiment of the present invention at a second viewing angle.

Icon: 100-a counterweight device; 110-a counterweight block; 111-shaft hole; 113-a limiting block; 115-a first hinge lug; 117-second hinge lug; 130-a counterweight platform; 150-a drive member; 151-oil cylinder body; 153-a piston rod; 170-upright post; 190-platform pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As mentioned in the background art, in the prior art, in a large-scale hoisting machine such as an excavator with a counterweight, since the counterweight is in a fixed state and the volume and weight of the counterweight are kept constant, the gravity center position of the counterweight cannot be adjusted during excavation or traveling of the excavator, so that the stability of the whole equipment is affected. For example, when the excavating force capacity needs to be increased, the position of the counterweight cannot be adjusted, so that the increased excavating force can only be applied to the machine body, uneven stress of the excavator is easily caused, and even a rollover phenomenon occurs.

The utility model provides a focus position adjustable counter weight device and excavator that has this counter weight device through the focus position of adjusting the counter weight for the focus can be based on actual excavation power demand back-and-forth movement and reciprocate, thereby has improved the stability of excavator, makes the adaptability of excavator wider.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

First embodiment

Referring to fig. 1 to 4 in combination, the present embodiment provides a counterweight device 100, which is disposed on a vehicle body of an excavator, and can improve the stability of the whole equipment by adjusting the position of the center of gravity, and does not increase the volume of the counterweight, and is convenient to operate.

The counterweight device 100 provided in this embodiment includes a counterweight 110, a counterweight platform 130, a driving member 150 and a column 170, wherein the counterweight platform 130 is configured to be disposed on a vehicle body and extend outward, a bottom of the counterweight 110 is rotatably disposed at an end of the counterweight platform 130, the column 170 is disposed on the counterweight platform 130, the driving member 150 is disposed at an upper portion of the column 170 and is in transmission connection with the counterweight 110, so as to drive the counterweight 110 to rotate relative to the counterweight platform 130, and a rotation center of the counterweight 110 does not coincide with a center of gravity.

The counter weight device 100 that this embodiment provided, under the drive of driving piece 150, counter weight 110 can rotate counter weight platform 130 relatively, and because the focus and the rotation center of counter weight 110 do not coincide, so at counter weight 110 pivoted in-process, the focus can take place to rotate, thereby the centrobaric back-and-forth movement and reciprocating have been realized, and then the regulation of barycentric position has been realized, because simultaneously through rotating realization barycentric position regulation, the event need not to increase or reduce the volume of counter weight 110, and adopt driving piece 150 to drive, it is also more convenient.

In the present embodiment, the vehicle body is a vehicle body of an excavator, and in the present embodiment, only the excavator is taken as an example for description, and here, the counterweight device 100 may also be disposed on a vehicle body of a loader or a vehicle body of a crane, but the counterweight device 100 provided in the present embodiment may be mounted on any equipment that needs to be equipped with a counterweight.

It should be noted that, in this embodiment, the counterweight platform 130 is disposed at the tail of the vehicle body, and a certain distance exists between the counterweight platform and the lower support structure of the vehicle body, so that the adjustment and the backward movement of the center of gravity of the whole vehicle can be realized through the counterweight block 110, and the vehicle is prevented from being tilted up or turned over. It should be noted that the rotation center in this embodiment refers to a set of points where the position is not changed when the counterweight 110 rotates, specifically, a rotation axis, that is, the center of gravity of the counterweight 110 is not coincident with the rotation axis of the counterweight 110, and specifically, the distance between the center of gravity of the counterweight 110 and the rotation axis is half of the height of the upright post 170.

In this embodiment, a platform pin 190 is disposed at an end of the counterweight platform 130, a shaft hole 111 is disposed at a bottom of the counterweight block 110, and the platform pin 190 is rotatably engaged with the shaft hole 111, so that the counterweight block 110 can rotate around the platform pin 190. The axis of the platform pin shaft 190 coincides with the rotating shaft of the counterweight block 110, and the rotation process of the counterweight block 110 is more controllable and smooth by arranging the platform pin shaft 190.

Specifically, the end of the counterweight platform 130 is U-shaped, the counterweight block 110 is placed in the U-shaped, and the platform pin 190 is connected to two arm ends of the U-shaped respectively, so that the counterweight block 110 can rotate in the groove of the U-shaped, and the counterweight platform 130 can stably support the counterweight block 110.

In the utility model discloses in other preferred embodiments, shaft hole 111 is the through-hole structure, and the great mounting groove in aperture is all seted up at the both ends of shaft hole 111, is provided with the bearing in the mounting groove, fixed connection between the outer lane of bearing and the balancing weight 110, for example the welding together, fixed connection between the inner circle of bearing and the platform round pin axle 190, for example the welding together, and the aperture of shaft hole 111 slightly is greater than the diameter of platform round pin axle 190 to make normal running fit between balancing weight 110 and the platform round pin axle 190 through the bearing.

In other preferred embodiments of the present invention, the platform pin 190 is fixed on the counterweight block 110 and extends to both sides, the counterweight platform 130 has a matching hole, both ends of the platform pin 190 pass through the matching holes of both sides respectively and are rotatably matched with the matching holes, so that the counterweight block 110 and the counterweight platform 130 can be rotatably matched with each other.

In this embodiment, the weight block 110 is further provided with a limiting block 113, and the limiting block 113 is used for abutting against the weight platform 130 when the weight block 110 rotates to the limit position. Specifically, the limiting block 113 is disposed on a side surface of the counterweight block 110 and extends outward, the limiting block 113 includes a first limiting portion and a second limiting portion integrally disposed, the first limiting portion is used for abutting against the counterweight platform 130 when the center of gravity of the counterweight block 110 rotates to reach a highest point, so as to avoid excessive rotation of the counterweight block 110, wherein when the center of gravity of the counterweight block 110 rotates to reach the highest point, the counterweight block 110 is in a vertically placed state; the second limiting portion is used for abutting against the counterweight platform 130 when the gravity center of the counterweight block 110 falls to the lowest point, so as to prevent the counterweight block 110 from rotating excessively, wherein when the gravity center of the counterweight block 110 rotates to the lowest point, the gravity center is level with the midpoint of the upright column 170 in the horizontal direction.

In this embodiment, the first position-limiting portion and the second position-limiting portion form an included angle, and the included angle between the first position-limiting portion and the second position-limiting portion is 120 ° to 150 °, specifically 135 °, so that the counterweight block 110 rotates within a certain range.

In other preferred embodiments of the present invention, the weight member 110 may not have the limiting block 113, and the rotation limit position of the weight member 110 is determined directly by the stroke of the driving member 150.

In the embodiment, the weight member 110 has a rectangular shape, and the shaft hole 111 is opened near the bottom corner of the weight member 110. Specifically, the top outside of balancing weight 110 has the chamfer structure, avoids balancing weight 110 to bump with other frames at the rotation in-process, and the top both sides of balancing weight 110 have the radius angle structure to can make things convenient for balancing weight 110 to rotate in the fluting of U type structure.

In this embodiment, one end of the driving member 150 is hinged to the top of the pillar 170, and the other end is hinged to the middle of the weight 110. Specifically, through the articulated connection mode, the driving member 150 can adaptively rotate relatively in the process of driving the counterweight block 110 to rotate, and the occurrence of the blocking condition is avoided.

In this embodiment, a first hinge lug 115 is disposed on the top of the upright 170, and a first hinge shaft is rotatably disposed on the first hinge lug 115 and connected to the driving member 150; the middle part of the counterweight 110 is provided with a second hinge journal stirrup 117, the second hinge journal stirrup 117 is rotatably provided with a second hinge shaft, and the second hinge shaft is connected with the driving member 150. The first hinge lug 115 and the second hinge lug 117 realize a hinged structure, and the structure is more stable. Specifically, the number of the first hinge lugs 115 is two, the number of the second hinge lugs 117 is two, the two ends of the driving member 150 are respectively provided with a cross shaft, a hinge structure is realized through the rotational connection between the cross shaft and the hinge lugs, and as for the structure for realizing the hinge between the cross shaft and the hinge lugs, reference can be made to the structure of the hinge lugs in the prior art.

In this embodiment, the driving member 150 includes an oil cylinder 151 and a piston rod 153, the oil cylinder 151 is hinged to the column 170, one end of the piston rod 153 is accommodated in the oil cylinder 151, and the other end is hinged to the counterweight 110. Of course, the driving member 150 may also be other driving structures, such as an electric push rod or an air cylinder, and is not limited in this regard.

It should be noted that, in this embodiment, the oil cylinder 151 is externally connected to an oil pipe and is controlled by a separately provided electromagnetic valve.

In other preferred embodiments of the present invention, the cylinder 151 is hinged to the middle of the counterweight 110, and the piston rod 153 is hinged to the top of the pillar 170. The function of driving the weight block 110 to rotate can also be realized.

In this embodiment, upright 170 is removably disposed on counterweight platform 130 and extends vertically upward. Specifically, a fixing plate is integrally provided at a lower portion of the pillar 170, and the fixing plate is fixedly mounted on the counterweight platform 130 by bolts.

To sum up, the utility model provides a counter weight device 100, its theory of operation is as follows: when the excavating force requirement of the excavator is increased, the oil cylinder body 151 controls the piston rod 153 to adjust the extension, one end of the oil cylinder body is hinged with the counterweight block 110, the other end of the oil cylinder body is hinged with the upright post 170, the counterweight block 110 is driven to rotate backwards around the platform pin shaft 190, the included angle between the counterweight block 110 and the upright post 170 is increased, the gravity center moves backwards, the gravity center position is reduced, the stability of a vehicle is greatly improved, the excavating force can be properly improved at the moment, and the phenomenon that the vehicle is warped or turned on the side can be avoided; when the excavating force of the excavator is required to be reduced, the oil cylinder body 151 controls the piston rod 153 to adjust and retract, the counterweight block 110 is driven to rotate forwards around the platform pin shaft 190, the included angle between the counterweight block 110 and the upright post 170 is reduced, the gravity center moves forwards, the gravity center is raised, and the excavating force can be properly reduced at the moment. Compared with the prior art, the utility model provides a counterweight device 100 can be through adjusting the focus position for the holistic stability of excavator obtains guaranteeing, and can adjust the size of excavating force, and through the control of hydro-cylinder body 151, swift, convenient, easy operation. Meanwhile, the counterweight block 110 can realize the adjustment of the gravity center position through rotation, so that the counterweight volume is basically kept unchanged.

Second embodiment

The present embodiment provides an excavator, which includes a vehicle body and a counterweight device 100, wherein the counterweight device 100 is disposed on the vehicle body, wherein the basic structure and principle of the counterweight device 100 and the technical effects thereof are the same as those of the first embodiment, and for the sake of brief description, the corresponding contents in the first embodiment can be referred to where not mentioned in part in the present embodiment.

The counterweight device 100 comprises a counterweight 110, a counterweight platform 130, a driving part 150 and a vertical column 170, wherein the counterweight platform 130 is arranged on the vehicle body and extends outwards, the bottom of the counterweight 110 is rotatably arranged at the end part of the counterweight platform 130, the vertical column 170 is arranged on the counterweight platform 130, the driving part 150 is arranged on the upper part of the vertical column 170 and is in transmission connection with the counterweight 110, the driving part is used for driving the counterweight 110 to rotate relative to the counterweight platform 130, and the rotation center of the counterweight 110 is not coincident with the gravity center.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a counter weight device, sets up on the automobile body, its characterized in that, includes balancing weight, counter weight platform, driving piece and stand, the counter weight platform is used for setting up and outwards stretches out on the automobile body, the bottom of balancing weight is rotated and is set up the tip of counter weight platform, the stand sets up on the counter weight platform, the driving piece sets up the upper portion of stand and with the balancing weight transmission is connected, is used for driving the balancing weight is relative the counter weight platform rotates, just the rotation center and the focus of balancing weight do not coincide.

2. The counterweight device of claim 1 wherein said counterweight platform has a platform pin at an end thereof, and said counterweight block has an axial hole at a bottom thereof, said platform pin being rotatably engaged with said axial hole to allow said counterweight block to rotate about said platform pin.

3. The counterweight device according to claim 2 wherein said counterweight block further comprises a limiting block, said limiting block being adapted to abut against said counterweight platform when said counterweight block rotates to a limit position.

4. The counterweight device of claim 2 wherein said counterweight is rectangular and said axial bore is disposed proximate a bottom corner of said counterweight.

5. The counterweight device according to claim 1 or 2 wherein one end of said drive member is hinged to the top of said column and the other end is hinged to the middle of said counterweight.

6. The counterweight device according to claim 5 wherein said drive member includes a cylinder body and a piston rod, said cylinder body being hinged to said column, said piston rod being received at one end in said cylinder body and being hinged at the other end to said counterweight.

7. The counterweight device according to claim 5, wherein a first hinge lug is arranged on the top of the upright, a first hinge shaft is rotatably arranged on the first hinge lug, and the first hinge shaft is connected with the driving member; the middle part of balancing weight is provided with the articulated journal stirrup of second, it is provided with the second articulated shaft to rotate on the articulated journal stirrup of second, the second articulated shaft with the driving piece is connected.

8. The counterweight device of claim 1 wherein said upright is removably disposed on said counterweight platform and extends vertically upward.

9. The counterweight device according to claim 8, wherein a fixing plate is integrally provided at a lower portion of said column, and said fixing plate is fixedly mounted on said counterweight platform by means of bolts.

10. An excavator comprising a counterweight arrangement according to any one of claims 1 to 9.