CN219411037U - Excavator push shovel connecting and lubricating device, push shovel assembly and excavator - Google Patents

Abstract

The utility model relates to a connection and lubrication device of an excavator push shovel, a push shovel assembly comprising the connection and lubrication device and the excavator. Wherein the connection and lubrication device comprises a connection assembly (3) for movably connecting the push shovel (1) to the chassis (2) of the excavator, and a lubrication system (32), the connection assembly (3) comprising a plurality of articulated shafts (31), the lubrication system comprising at least one concentrated filling block (321) and a plurality of tubes (322) corresponding to each of the articulated shafts, each concentrated filling block (321) being arranged at an outer part of the connection assembly (3) in a first direction (D), the first direction (D) being a transverse direction with respect to the travelling direction of the excavator. The centralized filling block (321) is adopted and arranged at the outer side part of the connecting component (3), so that an operator can conveniently access and fill the connecting component, the maintenance is convenient, and the working efficiency is improved.

Description

Excavator push shovel connecting and lubricating device, push shovel assembly and excavator

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a connecting and lubricating device for a push shovel of an excavator, a push shovel assembly and the excavator.

Background

The shovel is used as a working device for selection and has high selection ratio in the excavator. The push shovel may be mounted in front of or behind the chassis of the excavator. The connection structure for connecting the push shovel to the chassis has several structural forms, one of the structures uses an oil cylinder, and the shovel surface of the push shovel can only rotate around the pin shaft of the oil cylinder by a certain angle, so that the angle adaptability of the structure is poor. The other connecting structure is in the form of a four-bar mechanism, wherein the upper bracket and the two connecting arms below are used for connecting the push shovel with the chassis to form the four-bar mechanism, and two actuating mechanisms such as hydraulic cylinders are respectively connected with the upper bracket and the connecting arms, and the telescopic movement of the actuating mechanisms drives the push shovel to move so as to obtain the required push shovel.

The push shovel connecting structure, in particular to a push shovel connecting structure in a four-bar linkage form, is complex and has more hinge shafts (also called hinge point pin shafts). These hinge shafts require periodic lubrication with a lubricating medium such as butter because lack of lubrication or insufficient lubrication may cause problems of wear, friction noise, etc. of the hinge shaft, and even cause functional failure thereof. The hinge shaft of the excavator push shovel is lubricated regularly, so that the conditions of abrasion, connection looseness, hinge shaft faults and the like of the hinge shaft can be reduced. However, due to the characteristics of the shovel of the excavator, the shovel is low in position and limited in space, the filling positions of many hinge shafts are difficult to approach, and the shovel can need to enter a narrow space for operation, so that certain potential safety hazards exist. Moreover, filling the plurality of hinge shafts one by one makes the workload larger and the filling efficiency lower.

The existing lubrication medium filling also adopts a centralized lubrication mode, but the problems that the filling position is difficult to approach (for example, an operator is required to climb up a chassis or a frame, or an excavator is required to operate to rotate an excavator arm so as to be convenient to approach the filling position), the lubrication points (at the hinge shafts) cannot be lubricated according to the actual demand and the like exist in no exception. The prior art also has the problem that the adoption of rotatable joints in order to prevent the hinge shaft from driving the pipeline to twist leads to high cost.

Disclosure of Invention

The present utility model is directed to solving at least one of the problems discussed above and/or other problems in the prior art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a connection and lubrication device of an excavator push shovel, the connection and lubrication device including a connection assembly movably connecting the push shovel to a chassis of the excavator, and a lubrication system, wherein the connection assembly includes a plurality of hinge shafts, the lubrication system includes at least one concentrated filling block and a plurality of pipes corresponding to the plurality of hinge shafts, a filling nozzle of a lubrication medium is provided on each concentrated filling block, wherein each concentrated filling block is provided at an outer portion of the connection assembly in a first direction, the first direction being a transverse direction with respect to a traveling direction of the excavator; wherein each of the tubes is configured to fluidly communicate the filling nozzle to the corresponding hinge shaft.

According to an embodiment of the utility model, the connection assembly further comprises a rotating part, wherein the tube for supplying the lubrication medium to one of the hinge shafts fixed to the rotating part comprises a first tube and a second tube, the lubrication system further comprises a transition block provided on the rotating part and having a transition channel, the first tube extending from the concentrated filling block, bypassing the hinge shaft and being connected to an inlet of the transition channel, one end of the second tube being connected to the transition block via an outlet of the transition channel, the other end being connected to the hinge shaft.

According to an embodiment of the present utility model, the plurality of hinge shafts includes a first hinge shaft, a second hinge shaft, and a third hinge shaft, and the connection assembly further includes a bracket, two connection arms positioned under the bracket, and two actuators, wherein both ends of the bracket are connected to the chassis and the push shovel at both sides in a first direction through the first hinge shaft, respectively; the two ends of each connecting arm are respectively connected to the chassis and the push shovel through the second hinge shaft; two ends of each actuating mechanism are respectively connected to the bracket and the connecting arm on the corresponding side through the third hinge shaft; wherein the at least one concentrated filling block is arranged at an outer side part of the bracket in the first direction.

According to an embodiment of the utility model, the at least one concentrated filling block is arranged at the bottom of the holder.

According to an embodiment of the present utility model, there are two centralized filling blocks, which are respectively disposed at two outer side portions of the bracket in the first direction, and the pipe corresponding to each centralized filling block communicates the centralized filling block with the hinge shaft of the corresponding side.

According to an embodiment of the utility model, the overall orientation of the plurality of tubes connected to each centralized filling block is configured to: from the centralized filling block, extends along the support, passes through the chassis to the connecting arm on the corresponding side, and extends along the connecting arm towards the second hinge axis near the push shovel.

According to an embodiment of the utility model, the lubrication system further comprises a transition block provided on the connecting arm and having a transition channel, wherein the pipe supplying the lubrication medium to the second hinge shaft fixed on the connecting arm and close to the chassis comprises a first pipe communicating the filling nozzle and the inlet of the transition channel and a second pipe, one end of which is connected to the transition block via the outlet of the transition channel and the other end of which is connected to the second hinge shaft close to the chassis.

According to an embodiment of the utility model, the overall orientation of the plurality of tubes connected to each centralized filling block is configured to: from the centralized filling block, extends along the support, passes through the push shovel to the connecting arm on the corresponding side, and extends along the connecting arm towards the second hinge shaft close to the chassis.

According to an embodiment of the utility model, the lubrication system further comprises a transition block provided on the connection arm and having a transition channel, wherein the pipe supplying the lubrication medium to the second hinge shaft fixed on the connection arm and close to the push shovel comprises a first pipe communicating the filling nozzle and the inlet of the transition channel and a second pipe having one end connected to the transition block via the outlet of the transition channel and the other end connected to the second hinge shaft close to the push shovel.

According to an embodiment of the utility model, the inlet and the outlet of the transition channel are provided on the surface of the transition block facing the corresponding second hinge shaft.

According to an embodiment of the utility model, the filling nozzle is a plurality of independent filling nozzles, each of which communicates with one of the tubes for individually supplying the lubricating medium to the corresponding hinge shaft.

According to an embodiment of the present utility model, each of the pipes includes a pipe body, and a first pipe joint and a second pipe joint connected to both ends of the pipe body, respectively, the first pipe joint being screw-coupled with the concentrated filling block, and the second pipe joint being screw-coupled with the corresponding hinge shaft.

According to another aspect of the present utility model, there is provided a push shovel assembly comprising a push shovel and a connecting and lubricating device for the push shovel according to various exemplary aspects of the present utility model.

According to yet another aspect of the present utility model, there is provided an excavator comprising a connection and lubrication device or a push shovel assembly as described in accordance with various exemplary aspects of the present utility model. The excavator is preferably a wheeled excavator.

In the above schemes, because the centralized filling block is arranged at the outer side of the connecting assembly in the transverse direction of the excavator, the filling block is convenient for operators to fill near the filling block. The operator only needs to stand on the ground to finish filling, and does not need to climb the chassis or rotate the excavator arm. Through setting up the bottom at the support with concentrated filling piece for the support can protect concentrated filling piece, reduces the probability of colliding with the gravel and sand in the construction, improves concentrated filling piece's life. The scheme that the two sides of the connecting assembly are respectively provided with the centralized filling blocks reduces the complexity of pipeline routing and the risk of interference between the pipe and each moving part. Through set up a plurality of independent filling nozzles on concentrated filling piece, can realize concentrating the filling, can independently annotate as required to every articulated shaft again, avoid the waste of lubricating medium. Through set up the transition piece on rotating the part in order to connect the first pipe that comes from filling the piece extension, the mode of rethread second pipe turning back articulated shaft has avoided being connected to the coupling and the torsion of pipe of this articulated shaft, still makes the coupling replace high-cost rotary joint by ordinary screwed joint, and the cost is reduced to can avoid using the risk of joint inefficacy, damage that rotary joint caused.

Drawings

The features and advantages of the present utility model will be apparent from the detailed description provided hereinafter with reference to the accompanying drawings. It is to be understood that the following drawings are merely schematic and are not necessarily drawn to scale, and are not to be construed as limiting the utility model, in which:

fig. 1 illustrates a partial perspective view of an exemplary excavator according to the present utility model.

FIG. 2 illustrates a partial schematic view of an exemplary attachment and lubrication apparatus for an excavator blade in accordance with the present utility model.

FIG. 3 illustrates a partial schematic front view of the excavator illustrated in FIG. 1.

FIG. 4 illustrates a partial bottom schematic view of the excavator illustrated in FIG. 1.

Fig. 5 shows a schematic view of an exemplary connection and lubrication device, viewed from an inside-out angle.

Fig. 6 illustrates a schematic perspective bottom view of a connection and lubrication device according to one example.

Fig. 7 shows a schematic diagram of an exemplary transition block.

Reference numerals illustrate:

1. pushing shovel; 2. a chassis; 3. a connection assembly; 31. a hinge shaft; 311. a first hinge shaft; 312. a second hinge shaft; 313. a third hinge shaft; 32. a lubrication system; 321. intensively filling blocks; 3211. a filling nozzle; 322. a tube; 3221. a first tube; 3222. a second tube; 3223. a tube body; 3224. a first pipe joint; 3225. a second pipe joint; 323. a transition block; 33. a bracket; 34. a connecting arm; 35. an actuator; D. a first direction; and (3) an inlet: 3231; and (3) an outlet: 3232; screw hole: 3233.

Detailed Description

Embodiments of the present utility model are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding and enabling description of the utility model to one skilled in the art. It will be apparent, however, to one skilled in the art that the present utility model may be practiced without some of these specific details. Furthermore, it should be understood that the utility model is not limited to specific described embodiments. Rather, any combination of the features and elements described below is contemplated to implement the utility model, whether or not they relate to different embodiments. Thus, the following aspects, features, embodiments and advantages are merely illustrative and should not be considered elements or limitations of the claims except where explicitly set out in a claim.

According to an exemplary embodiment, as shown in fig. 1 to 6, the present utility model provides a connection and lubrication device of a shovel of an excavator, which is used for connecting a shovel 1 of the excavator to a chassis 2 of the excavator, enabling the shovel 1 to move relative to the chassis 2, and realizing the movement required by the operation of the shovel 1; and each of the hinge shafts therein can be lubricated by a lubrication system therein. It should be noted that while the present utility model has been described with respect to the structure and advantages of a connection and lubrication device for an excavator blade, those skilled in the art will appreciate that it may be adapted for use in other work machines where appropriate.

In the description of the present utility model, the "first direction" is used to denote a transverse direction with respect to the travel direction of the excavator, i.e. a direction transverse to the travel direction. The first direction may also be referred to as a left-right direction, which is relative to a traveling direction referred to as a front-rear direction. In this context, the terms "upper", "lower", "above", "below", etc. refer to the ground on which the work machine is traveling, wherein the orientation closer to the ground is "lower", and vice versa.

As an exemplary embodiment, the present utility model provides a connection and lubrication device comprising a connection assembly 3 movably connecting the shovel 1 to a chassis 2 of an excavator, the connection assembly 3 comprising a plurality of hinge shafts 31, and a lubrication system 32 comprising at least one concentrated filling block 321 and a plurality of tubes 322 corresponding to the plurality of hinge shafts 31, each of the concentrated filling blocks 321 being provided with a filling nozzle 3211 of a lubricating medium, wherein each of the concentrated filling blocks 321 is provided at an outer location of the connection assembly 3 in a first direction D, and each of the tubes 322 is configured to fluidly communicate the filling nozzle 3211 to the corresponding hinge shaft 31.

In this exemplary embodiment, since the concentrated filling block 321 is provided at an outer portion of the connection assembly 3 in the lateral direction of the excavator, it is convenient for the operator to fill near the filling block. The operator only needs to stand on the ground to finish filling, and does not need to climb the chassis or rotate the excavator arm. Moreover, the centralized filling block 321 is adopted in the scheme, and the operation at each hinge shaft is not needed, so that the filling is convenient, and the filling efficiency is improved.

As a specific example of the connection assembly 3, as shown in fig. 1, 3 and 4, the connection assembly 3 includes a bracket 3, two connection arms 34 located below the bracket 33, and two actuators 35, wherein both ends of the bracket are connected to the chassis 2 and the push blade 1 by first hinge shafts 311 at both sides in the first direction D, respectively, both ends of each of the connection arms 34 are connected to the chassis 2 and the push blade 1 by second hinge shafts 312, respectively, and both ends of each of the actuators 35 are connected to the bracket 33 and the connection arms 34 on the corresponding side by third hinge shafts 313, respectively, in which case at least one concentrated filling block 321 is provided at an outer portion of the bracket 33 in the first direction D.

The connecting component 3 in the scheme adopts the upper bracket 3 and the two connecting arms 34 below to form a four-bar linkage, so that the flexibility of the connecting structure is strong and the strength of the structure can be ensured through the integral upper bracket 3. It will be appreciated by those skilled in the art that while the construction of such a connection assembly is described herein and in the accompanying drawings as an example, the concepts of the present utility model are applicable to connection assemblies for other mechanisms as well.

Specifically, as shown in fig. 2 to 5, the bracket 33 is provided with three first pin holes at intervals in the traveling direction of the excavator, the connecting arm 34 is provided with three second pin holes at intervals in the traveling direction of the excavator, the chassis 2 is provided with two third pin holes from top to bottom, the shovel 1 is provided with two fourth pin holes from top to bottom, the shovel-side end of the bracket 33 is rotatably connected to the shovel 1 through a first pin hole of the first hinge shaft 311 passing through the first pin hole of the shovel side and a fourth pin hole of the upper side, the rear-side end of the bracket 33 is rotatably connected to the chassis through a first pin hole of the other first hinge shaft 311 passing through the first pin hole of the chassis side and a third pin hole of the upper side, the shovel-side end of the connecting arm 34 is rotatably connected to the shovel 1 through a second pin hole of the second hinge shaft 312 passing through the second pin hole of the chassis side and a third pin hole of the lower side, and the chassis 2 are rotatably connected through another second hinge shaft 312 passing through the second pin hole of the lower side of the connecting arm 34, so that the bracket 33, the connecting arm 34, the connecting arm 2 and the four-bar mechanism are constituted. As shown in fig. 2 to 5, an actuator 35 (e.g., a hydraulic cylinder) is disposed obliquely between the bracket 33 and the corresponding connection arm 34, and the upper end of the actuator 35 is connected to the bracket 33 through a third hinge shaft 313 passing through a first pin hole provided on the bracket 33 near the chassis 2. The lower end of the actuator 35 is connected to the link arm 34 through a second pin hole of the link arm 34 provided near the push blade 1 by another third hinge shaft 313. The push rod of the actuating mechanism 35 extends or retracts to drive the four-bar mechanism to deform, so that the push shovel 1 and the chassis 2 are driven to move relatively.

Illustratively, at least one concentrated fill block 321 is disposed at the bottom of the support 33. This exemplary configuration enables the support 33 to protect the concentrated filling block 321, and in particular the filling nozzle 3211 thereon, reducing the probability of collisions with sand and stones during construction, and improving the service life of the concentrated filling block.

According to a preferred example, two concentrated filling blocks 321 are provided, which are provided at two outer portions of the bracket 33 in the lateral direction, respectively. As shown in fig. 1 to 6, since the two connecting arms 34 and the two actuators 35 are respectively located at both sides (may also be referred to as left and right sides) in the lateral direction, the respective hinge shafts 31 to be lubricated (i.e., the first hinge shaft 311, the second hinge shaft 312, and the third hinge shaft 313) are also respectively provided at both sides, and the exemplary scheme is to provide the two concentrated filling blocks 321 also at both sides of the bracket 33, so that the pipe of the lubrication system of each side only needs to be connected at the respective sides from the concentrated filling blocks 321 of that side to the respective hinge shafts to be lubricated of that side. This reduces the complexity of the piping routing and the possibility of interference of the pipes with the moving parts of the connection assembly 3.

Specifically, as shown in fig. 4, 6, a concentrated filling block 321 on the left side is provided at a position on the left side below the holder 33, and illustratively, six filling nozzles 3211 on the concentrated filling block 321 are directed to the left of the holder 33, and a concentrated filling block 321 on the right side is provided at a position on the right side below the holder 33, and illustratively, six filling nozzles 3211 on the concentrated filling block 321 are directed to the right of the holder 33. Furthermore, the concentrated filling block 321 is located closer to the push shovel 1, and interference between the concentrated filling block 321 and the actuator 35 when the connecting arm 34 is active can be prevented.

As an example, each concentrated filling block 321 is provided with several filling nozzles 3211 for filling with a lubricating medium, each filling nozzle 3211 being independent, and the filling nozzles 3211 being in one-to-one correspondence with the tube 322 and the hinge shaft 31 to be lubricated, so that, when filling with a lubricating medium, they can be added independently for one of the hinge shafts 31. By adopting the structure of the scheme, centralized filling (namely, operators do not need to fill the filling joint of each hinge shaft respectively) can be realized, and each hinge shaft can be independently added according to the needs, so that the waste of lubricating media is avoided.

As shown in fig. 1-6, the lubricating medium reaches the corresponding hinge shaft 31 after passing through the filling nozzle 3211 and the pipes 322, each pipe 322 is arranged close to the bracket 33, the connecting arm 34, the chassis 2 or the push shovel 1, and is preferably fixed to the bracket 33, the connecting arm 34, the chassis 2 or the push shovel 1 by connecting pieces such as fixing rings, binding belts or other fixing forms and is far away from the ground, so that the collision of foreign objects such as sand and stones with the pipe 322 during the operation of the excavator can be avoided.

For the rotating member of the link assembly 3, such as the link arm 34, a manner of fixing the hinge shaft thereto is often used. The second hinge shaft 312 is fixed to the connecting arm 34, for example, by a fixing assembly 314 shown in fig. 2. The hinge shaft rotates along with the rotating member. The pipe joint mounted on the hinge shaft is also driven, and if the pipe joint and the pipe connected thereto cannot rotate with the rotating member to some extent, the pipe joint and the corresponding pipe are twisted with respect to the rotating member and the hinge shaft, which quickly causes damage and failure of the pipe and the pipe joint. An example of such a hinge axis is shown as a second hinge axis on the swivel arm 34 in fig. 5 close to the chassis 2. One existing solution is to use a rotary joint, which is costly. While according to an exemplary embodiment of the present utility model, a solution is provided in which the pipe 322 for supplying the lubrication medium to the hinge shaft fixed to the rotating member is divided into a first pipe 3221 and a second pipe 3222, the lubrication system further comprises a transition block 323 provided on the rotating member and having a transition passage, the first pipe 3221 extends from the concentrated filling block 321, bypasses the hinge shaft (in the example of fig. 5, the second hinge shaft near the chassis 2) and is connected to an inlet 3231 of the transition passage of the transition block 323, and the second pipe 322 extends from an outlet 3232 of the transition passage and returns to the hinge shaft.

In the above-described structure, the first tube 3221 extending sideways from the concentrated filling block 321 through the hinge shaft and along the rotating member to the transition block 323 is not rotated with respect to the rotating member. The transition block 323 serves to turn the flow direction of the lubrication medium by 180 degrees. The second tube 3222 is also fixed to the rotating member by the transition block 323 and the hinge shaft, which are connected to the rotating member at both ends, respectively, and thus is not rotated with respect to the rotating member. Therefore, the pipe joint connected to the hinge shaft and neither the first pipe nor the second pipe are twisted with the rotation of the rotating member. By adopting the mode, the first pipe extends sideways through the hinge shaft and extends along the rotating part to reach the transition block 323, and the second pipe is turned back to the hinge shaft, so that the torsion of the pipe joint and the pipe is avoided, and the pipe joint can also directly adopt a common threaded joint to replace a high-cost rotary joint, thereby reducing the cost. And the risk of joint failure and damage caused by the use of rotary joints can be avoided.

As shown in fig. 5, as an example, a plurality of pipes supplying the lubricating medium to the plurality of hinge shafts 31 (including two first hinge shafts 311, two second hinge shafts 312, and two third hinge shafts 313 in the specific example of fig. 1 to 6, six lubricating points in total) on each side of the connection assembly 3 may run in the following manner: i.e., the overall orientation of the plurality of tubes 322 is configured to: starting from this concentrated filling block 321, it extends along the support 33, passes through the connecting arm 34 of the chassis 2, which is located between the support 33 and the connecting arm 34, reaches the corresponding side, and extends along this connecting arm 34 toward the second hinge axis 312 close to the push shovel 1.

In this case, for the second hinge shaft near the chassis in fig. 5, it is fixed to the connection arm 34. Since its supply line extends from the chassis as shown in fig. 5, if the pipe is directly connected to the second hinge shaft, it is inevitable that the second hinge shaft is rotated when the connection arm 34 is rotated with respect to the chassis 2 and the pipe joint and the pipe connected to the second hinge shaft are twisted. The utility model thus employs a transition piece 323 which is arranged on the connecting arm 34 and has a transition channel, which transition piece 323 is located at a position between the two second hinge axes. And the pipe 322 that supplies the lubrication medium to the second hinge shaft 312 fixed to the connection arm 34 and close to the chassis 2 includes a first pipe 3221 and a second pipe 3222, the first pipe 3221 communicating with the filling nozzle 3211 and the inlet of the transition duct, one end of the second pipe 3222 being connected to the transition block 323 via the outlet of the transition duct, and the other end being connected to the second hinge shaft close to the chassis.

Illustratively, as shown in FIG. 5, the tubes of the first tube 3221 may be connected to the support 33, chassis 2 (push blade 1 in other arrangements, as well) and connecting arm 34, respectively, by straps or connectors, and the tubes of the second tube 3222 may be connected to the connecting arm 34 by straps or connectors.

It will be appreciated by those skilled in the art that alternatively, the plurality of tubes supplying the lubricating medium to the plurality of hinge shafts 31 may also run in the following manner: i.e., the overall orientation of the plurality of tubes 322 is configured to: starting from the concentrate-filling block 321, it extends along the support 33, passes through the push shovel 1 to the connecting arm 34 on the corresponding side, and extends along the connecting arm 34 toward the second hinge axis 312 near the chassis 2.

In this variant, a transition piece with a transition channel can also be provided on the connecting arm 34, which transition piece 323 is located between the two second hinge shafts, in order to prevent twisting of the pipe connection and pipe connected to the second hinge shaft close to the push shovel. The pipe supplying the lubrication medium to the second hinge shaft 312 fixed to the connection arm and close to the push shovel includes a first pipe communicating the filling nozzle 3211 and the inlet of the transition passage, and a second pipe having one end connected to the transition block via the outlet of the transition passage and the other end connected to the second hinge shaft close to the push shovel.

Illustratively, as shown in fig. 4 to 7, the inlet 3231 and the outlet 3232 of the transition channel of the transition block 323 are located on the same side surface of the transition block 323 and face the second hinge shaft 312 corresponding to the transition block 323, and due to the limitation of the process, the transition channel of the embodiment is arranged in an "F" shape in the transition block 323 and forms the inlet 3231, the outlet 3232 and the process port on the surface of the transition block 323, wherein the process port is plugged by a plugging cap or some other way after the process port is used, the lubrication medium flows from the inlet to the outlet after entering the transition channel, and the surface of the transition block 323 where the inlet 3231 and the outlet 3232 are located faces the second hinge shaft 312 of the lubrication medium supplied by the second pipe 3222, so that the torsion of the second pipe 3222 can be reduced. The transition block 323 may also have threaded holes 3233 formed therein to allow for the attachment of other components, such as piping, as desired.

As a preferred example in the above-described aspects, as shown in fig. 2, 5 and 6, the pipe 322 includes a pipe main body 3223, a first pipe joint 3224 and a second pipe joint 3225 connected to both ends of the pipe main body 3223, respectively, at least a portion of an outer surface of the first pipe joint 3224 is provided with external threads, a filling passage of the concentrated filling block 321 is provided with internal threads, and a portion of the first pipe joint 3224 is screw-coupled with an inner portion of the concentrated filling block 321. The centralized filling block 321 may be designed as a through threaded hole, and the external thread of the first pipe joint 3224 and the external thread of the filling nozzle 3211 are respectively in threaded connection with the internal thread of the centralized filling block 321. At least a portion of the outer surface of the second pipe joint 3225 has external threads to be threadedly coupled with a corresponding hinge shaft. It will be appreciated by those skilled in the art that the connection between the first pipe joint 3224 and the centralized filling block 321, and between the second pipe joint 3225 and the corresponding hinge shaft is not limited to the threaded connection described above, and other connection methods, such as an interference fit insertion connection, may be used, so long as a sealed connection is achieved, and the concept of the present utility model is applicable to these other connection methods. The pipe main body 3223 can be made of hard materials such as a hose or metal, and the like, so that the special lubricating rubber pipe in the prior art is replaced, the manufacturing cost is reduced, and the product competitiveness is improved.

The utility model also provides a push shovel assembly comprising the push shovel 1 and the connecting and lubricating device of the above exemplary structures. Due to the design of the connecting and lubricating device, the push shovel assembly is more convenient to maintain when lubrication is needed, and the working efficiency is improved.

The utility model also provides an excavator comprising the connecting and lubricating device or the push shovel assembly, and the excavator has higher working efficiency and lower manufacturing cost. The excavator is preferably a wheeled excavator.

Industrial applicability

The connecting and lubricating device according to the utility model can be used in a push shovel assembly of an excavator, in particular for a wheeled excavator. Fig. 1 is a partial schematic view of a wheel excavator according to an exemplary embodiment of the present utility model, in which a push shovel 1, a chassis 2, a link assembly 3 for driving the push shovel 1 to move, and a lubrication system 32 for supplying a lubrication medium to a plurality of hinge shafts 31 of the link assembly 3 are shown, the connection and lubrication apparatus according to the present utility model may be used for other work machines requiring lubrication of the hinge shafts or other link members.

The connecting and lubricating device according to the present utility model comprises the lubricating system 32, wherein the lubricating system 32 is capable of completing filling by integrating a plurality of filling nozzles 3211 on the centralized filling block 321, and arranging the centralized filling block 321 on the outer side part of the bracket 33 in the first direction D and the filling nozzles 3211 facing the outer side of the bracket 33, so that the pushing shovel 1 is only required to be lowered by a certain height when filling the lubricating medium, and maintenance personnel only need to stand on the ground, thereby being convenient to operate. And, the concentrated filling block 321 is provided at the bottom of the holder 33. The bracket 33 can protect the centralized filling block 321, in particular the filling nozzle 3211 on the centralized filling block, reduce the probability of collision with sand and stones in construction and prolong the service life of the centralized filling block 321.

In addition, the lubrication system 32 uses the transition block 323, the first pipe 3221 and the second pipe 3222 to supply the lubrication medium to some second hinge shafts 312, and the first pipe extends sideways through the hinge shafts and extends along the rotating component and then is folded back to the hinge shafts through the transition block 323 and the second pipe, so that twisting of the pipe joint and the pipe is avoided, and the pipe joint can directly adopt a common threaded joint to replace a high-cost rotary joint, thereby reducing the cost. And the risk of joint failure and damage caused by the use of rotary joints can be avoided.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. It is intended that the specification and examples disclosed herein be considered as exemplary only, with a true scope of the utility model being indicated by the following claims and their equivalents.

Claims (15)

1. A connection and lubrication device for an excavator push shovel, the connection and lubrication device comprising:

a connection assembly (3) for movably connecting the shovel (1) to a chassis (2) of the excavator, the connection assembly (3) comprising a plurality of hinge shafts (31), and

-a lubrication system (32), the lubrication system (32) comprising:

at least one concentrated filling block (321), wherein a filling nozzle (3211) for lubricating medium is arranged on each concentrated filling block (321), and each concentrated filling block (321) is arranged at the outer part of the connecting assembly (3) in a first direction (D), and the first direction (D) is a transverse direction relative to the travelling direction of the excavator; and

a plurality of tubes (322) corresponding to the plurality of hinge shafts (31), each tube (322) configured to fluidly communicate the filling nozzle (3211) to the corresponding hinge shaft (31).

2. The connection and lubrication device according to claim 1, characterized in that the connection assembly (3) further comprises a rotating part, wherein the tube (322) for supplying lubrication medium to one of the hinge shafts (31) fixed to the rotating part comprises a first tube (3221) and a second tube (3222), the lubrication system further comprises a transition block (323) provided on the rotating part and having a transition channel, the first tube (3221) extending from the concentrated filling block (321), bypassing the hinge shaft and being connected to the inlet of the transition channel, one end of the second tube (3222) being connected to the transition block (323) via the outlet of the transition channel, the other end being connected to the hinge shaft.

3. The connection and lubrication device according to claim 1, wherein the plurality of hinge shafts (31) comprises a first hinge shaft (311), a second hinge shaft (312) and a third hinge shaft (313), the connection assembly (3) further comprising:

a bracket (33) having both ends connected to the chassis (2) and the push blade (1) at both sides in a first direction (D) through the first hinge shaft (311), respectively;

two connecting arms (34) positioned below the bracket (33), wherein two ends of each connecting arm (34) are respectively connected to the chassis (2) and the push shovel (1) through the second hinge shaft (312); and

two actuators (35), both ends of each actuator (35) are connected to the bracket (33) and the connecting arm (34) on the corresponding side through the third hinge shaft (313), respectively;

wherein the at least one concentrated filling block (321) is arranged at an outer part of the bracket (33) in the first direction (D).

4. A connecting and lubricating device according to claim 3, characterised in that the at least one concentrated filling block (321) is arranged at the bottom of the bracket (33).

5. The connecting and lubricating device according to claim 3 or 4, characterized in that there are two concentrated filling blocks (321) respectively arranged at two outer portions of the support (33) in the first direction (D), the tube (322) corresponding to each concentrated filling block (321) communicating the concentrated filling block (321) with the hinge shaft (31) of the corresponding side.

6. The connection and lubrication device according to claim 5, characterized in that the overall orientation of the plurality of tubes (322) connected to each concentrated filling block (321) is configured to: starting from the concentrated filling block (321), extends along the support (33), passes through the chassis (2) to the connecting arm (34) on the corresponding side, and extends along the connecting arm (34) towards the second hinge shaft (312) close to the push shovel (1).

7. The connecting and lubricating device according to claim 6, characterized in that the lubricating system (32) further comprises a transition block (323) provided on the connecting arm (34) and having a transition channel, wherein the pipe (322) supplying the lubricating medium to the second hinge shaft (312) fixed on the connecting arm (34) and close to the chassis (2) comprises a first pipe (3221) and a second pipe (3222), the first pipe (3221) communicating the filling nozzle (3211) and the inlet of the transition channel, one end of the second pipe (3222) being connected to the transition block (323) via the outlet of the transition channel, the other end being connected to the second hinge shaft close to the chassis.

8. The connection and lubrication device according to claim 5, characterized in that the overall orientation of the plurality of tubes (322) connected to each concentrated filling block (321) is configured to: starting from the concentrated filling block (321), it extends along the support (33), passes through the push shovel (1) to the connecting arm (34) on the corresponding side, and extends along the connecting arm (34) towards the second hinge shaft (312) close to the chassis (2).

9. The connection and lubrication device according to claim 8, wherein the lubrication system (32) further comprises a transition block provided on the connection arm and having a transition channel, wherein the tube supplying the lubrication medium to the second hinge shaft (312) fixed on the connection arm and close to the push shovel comprises a first tube communicating the filling nozzle (3211) and the inlet of the transition channel and a second tube having one end connected to the transition block via the outlet of the transition channel and the other end connected to the second hinge shaft close to the push shovel.

10. The connection and lubrication device according to claim 7 or 9, characterized in that the inlet and outlet of the transition channel are provided on the surface of the transition block (323) facing the corresponding second hinge shaft (312).

11. The connection and lubrication device according to claim 1, wherein the filling nozzle (3211) is a plurality of independent filling nozzles (3211), each filling nozzle (3211) being in communication with one of the tubes (322) for individually supplying lubrication medium to the respective hinge shaft (31).

12. The connection and lubrication device according to claim 1, wherein each tube (322) comprises a tube body (3223) and a first tube joint (3224) and a second tube joint (3225) respectively connected to two ends of the tube body (3223), the first tube joint (3224) being screwed with the concentrated filling block (321), the second tube joint (3225) being screwed with the corresponding hinge shaft (31).

13. A push shovel assembly, characterized by comprising a push shovel (1) and a connecting and lubricating device according to any one of claims 1 to 12 for the push shovel (1).

14. An excavator comprising a connection and lubrication device according to any one of claims 1 to 12 or a push shovel assembly according to claim 13.

15. The excavator of claim 14 wherein the excavator is a wheeled excavator.