CN220615993U

CN220615993U - Lifting type towing wheel, travelling mechanism and crawler-type engineering vehicle

Info

Publication number: CN220615993U
Application number: CN202322311134.2U
Authority: CN
Inventors: 王晓波; 文俊; 焦青; 王春磊; 王冉冉; 张亚雄
Original assignee: Xuzhou XCMG Mining Machinery Co Ltd
Current assignee: Xuzhou XCMG Mining Machinery Co Ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2024-03-19
Anticipated expiration: 2033-08-28

Abstract

The utility model discloses a lifting type towing wheel, a travelling mechanism and a crawler type engineering vehicle, which comprise a lower shaft seat, a mounting shaft seat for assembling a wheel body and an upper shaft seat; the lifting part is arranged in the lower shaft seat; the installation shaft seat is arranged in the lower shaft seat and is connected with the lifting part, and the lifting part drives the wheel body to move up and down so as to tension the crawler belt; the upper shaft seat is arranged on the lower shaft seat and used for limiting the installation shaft seat in a moving space formed by the upper shaft seat and the lower shaft seat. According to the utility model, the automatic adjustment of the mounting height of the towing chain wheel is realized through the hydraulic system, so that the problem that the tensioning oil cylinder device cannot continuously realize tensioning of the crawler system can be effectively solved, and the problems of increased design cost and manufacturing cost and difficult assembly of the final complete machine equipment caused by the fact that the mounting height of the towing chain wheel cannot be flexibly adjusted at the beginning of design can be solved.

Description

Lifting type towing wheel, travelling mechanism and crawler-type engineering vehicle

Technical Field

The utility model belongs to the field of engineering machinery, and particularly relates to a lifting type towing wheel.

Background

Crawler type engineering vehicles such as hydraulic excavators are frequently increased along with the operation of complete equipment, and the crawler is gradually loosened, so that the suspension amount of the crawler at the upper part of the crawler is too large to contact with a frame, and frame structural members are worn; under the general condition, a tensioning oil cylinder device is adopted to push the guide wheels to move, so that the crawler belt is tensioned to a normal working state, but along with the operation of the whole machine equipment, the crawler belt still loosens to a state incapable of working normally, if the tensioning oil cylinder device is repeatedly used to push the guide wheels to tension the crawler belt, the axle seat of the guide wheels can move out of the supporting range of a track plate where the guide wheels are positioned, at the moment, the crawler belt system is required to be tensioned by adopting a mode of disassembling the track plate, so that the whole machine equipment is stopped and cannot operate, and a certain labor cost for manual disassembly is increased; secondly, in the design of the whole equipment, in order to meet the installation height of the towing chain wheel in a four-wheel one-belt layout, a corresponding heightening mechanical structure is welded on a frame to meet the installation height requirement of the towing chain wheel, so that unnecessary design and manufacturing cost are caused intangibly; in addition, in the four-wheel belt assembly process, the four-wheel belt assembly process is generally limited by the design length of the crawler belt, so that the assembly operation difficulty of operators and the operation man-hour are increased to a certain extent.

Disclosure of Invention

Aiming at the problems, the utility model discloses a lifting type towing wheel, which has the function of tensioning a crawler belt by adjusting the mounting height of the towing wheel and has important significance for solving the defects of the existing tensioning method.

The utility model is realized according to the following technical scheme:

in a first aspect, the present utility model discloses a lifting drag sprocket comprising:

a lower shaft seat, the inside of which is provided with a lifting component;

the mounting shaft seat is used for assembling the wheel body, is arranged in the lower shaft seat, is connected with the lifting part and drives the wheel body to move up and down through the lifting part so as to tension the crawler belt;

the upper shaft seat is arranged on the lower shaft seat and used for limiting the installation shaft seat in a moving space formed by the upper shaft seat and the lower shaft seat.

In some embodiments, the lower axle seat comprises:

the periphery of the bottom plate is provided with a plurality of mounting holes for being matched with the fasteners to fix the lower shaft seat on the longitudinal beam frame, the middle part of the bottom plate is provided with an oil cavity, and the lifting part is arranged in the oil cavity;

surrounding the coaming that the oil pocket upwards extends, a side of coaming fluting is convenient for the pivot on the wheel body stretch into in the axle bed cavity in the coaming, and realizes the intercommunication through seting up the round hole between axle bed cavity and the oil pocket of below.

In some embodiments, the lifting member is a piston rod, which is a stepped rod with a narrow upper part and a wide lower part; the narrow part of the piston rod penetrates out of the round hole and is fixed with the mounting shaft seat; the side face of the bottom plate is provided with an oil filling hole and an oil draining hole which are communicated with the oil cavity, the piston rod moves upwards after oil is filled through the oil filling hole, and the piston rod moves downwards after oil is drained through the oil draining hole.

In some embodiments, a plurality of sealing rings are arranged between the wide part of the piston rod and the peripheral surface of the oil cavity, which is opposite to the wide part; a plurality of sealing rings are arranged between the narrow part of the piston rod and the peripheral surface opposite to the round hole.

In some embodiments, a mounting plate is arranged in the shaft seat cavity, a counter bore is arranged on the mounting plate, a threaded hole is arranged on the axial surface of the narrow part of the piston rod, and the mounting plate and the piston rod are fixed together through an inner hexagon screw; the mounting shaft seat is welded on the mounting plate.

In some embodiments, the bottom surface of the bottom plate is provided with a circular hole for fitting the lifting member in the oil chamber, the circular hole being sealed by a welding pad.

In some embodiments, a plurality of sealing rings are arranged between the bottom plate and the backing plate.

In some embodiments, the upper shaft seat is a side slot, so that the rotating shaft on the wheel body can move in the upper shaft seat and the lower shaft seat.

In a second aspect, the utility model discloses a running mechanism, a longitudinal beam frame, wherein the longitudinal beam frame is provided with a crawler belt, a guide wheel and the lifting type towing wheel.

In a third aspect, the utility model discloses a crawler-type engineering vehicle, which is provided with the travelling mechanism.

The utility model has the beneficial effects that:

according to the utility model, the automatic adjustment of the mounting height of the towing chain wheel is realized through the hydraulic system, so that the problem that the tensioning oil cylinder device cannot continuously realize tensioning of the crawler system can be effectively solved, and the problems of increased design cost and manufacturing cost and difficult assembly of the final complete machine equipment caused by the fact that the mounting height of the towing chain wheel cannot be flexibly adjusted at the beginning of design can be solved. Meanwhile, the utility model can be applied to crawler-type engineering vehicles and has important significance for tensioning design of a crawler system in the field of engineering machinery.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.

In the drawings:

FIG. 1 is an exploded view of the overall structure of the lifting drag chain wheel of the present utility model;

FIG. 2 is a schematic view of a lower axle seat according to the present utility model;

FIG. 3 is a cross-sectional view of the lower axle seat structure of the present utility model;

FIG. 4 is a schematic view of a piston rod according to the present utility model;

FIG. 5 is a schematic diagram of a welding mode between a mounting shaft seat and a mounting plate according to the present utility model;

FIG. 6 is a schematic diagram of an assembly cut-away view of a lifting drag chain wheel of the present utility model;

fig. 7 is a schematic diagram of the installation operation of the lifting drag chain wheel of the present utility model.

The accompanying drawings: 1. a lower shaft seat; 2. an upper shaft seat; 3. a mounting plate; 4. installing a shaft seat; 5. a piston rod; 6. an inner hexagon screw; 7. a backing plate; 8. a seal ring; 9. a seal ring; 10. a seal ring; 11. a gasket; 12. a wheel body; 13. a shaft seat cavity; 14. a mounting hole; 15. a round hole; 16. an oil discharging hole; 17. an oil filling hole; 18. a seal ring mounting groove; 19. a round hole; 20. an oil chamber; 21. a seal ring mounting groove; 22. a seal ring mounting groove; 23. a threaded hole; 24. a track; 25. a guide wheel; 26. a rail frame; 27. lifting type chain dragging wheel.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 6, a lifting type drag chain wheel comprises a lower shaft seat 1, a mounting shaft seat 4 for assembling a wheel body 12 and an upper shaft seat 2; the lower shaft seat 1 is internally provided with a lifting component; the installation shaft seat 4 is arranged in the lower shaft seat 1 and is connected with a lifting component, and the wheel body 12 is driven to move up and down by the lifting component so as to tension the crawler belt 24; the upper shaft seat 2 is arranged on the lower shaft seat 1 and used for limiting the installation shaft seat 4 in a moving space formed by the upper shaft seat and the lower shaft seat.

A preferred embodiment of the above embodiment with respect to the lower shaft seat is given below:

as shown in fig. 2 and 3, the lower shaft seat 1 comprises a bottom plate and a coaming, the periphery of the bottom plate is provided with a plurality of mounting holes 14 for being matched with fasteners to fix the lower shaft seat 1 on a longitudinal beam frame 26, the middle part of the bottom plate is provided with an oil cavity 20, and a lifting component is arranged in the oil cavity 20; the coaming extends upwards around the oil cavity 20, one side surface of the coaming is grooved, a rotating shaft on the wheel body 12 conveniently extends into the shaft seat cavity 13 in the coaming, and the shaft seat cavity 13 is communicated with the oil cavity 20 below through a round hole 15.

A preferred embodiment of the above embodiment with respect to the lifting member is given below:

as shown in fig. 3, 4 and 6, the lifting member is a piston rod 5, and the piston rod 5 is a stepped rod with a narrow upper part and a wide lower part; the narrow part of the piston rod 5 penetrates out of the round hole 15 and is fixed with the mounting shaft seat 4; the side surface of the bottom plate is provided with an oil filling hole 17 and an oil discharging hole 16 which are communicated with the oil cavity 20, the piston rod 5 moves upwards after the oil is filled through the oil filling hole 17, and the piston rod 5 moves downwards after the oil is discharged through the oil discharging hole 16.

Further, as shown in fig. 3, 4 and 6, two seal ring mounting grooves 22 are provided in the wide portion of the piston rod 5, and two seal rings 10 are mounted between the wide portion of the piston rod 5 and the circumferential surface of the oil chamber 20; two seal ring mounting grooves 21 are formed in the inner wall of the round hole 15, and two seal rings 9 are mounted between the narrow part of the piston rod 5 and the circumferential surface of the round hole 15 opposite to each other.

In a further scheme, as shown in fig. 5 and 6, a mounting plate 3 is arranged in a shaft seat cavity 13, a counter bore is arranged on the mounting plate 3, a threaded hole 23 is arranged on the axial surface of the narrow part of a piston rod 5, and the mounting plate 3 and the piston rod 5 are fixed together through a socket head cap screw 6 and a gasket 11; the mounting shaft seat 4 is welded on the mounting plate 3.

Further, as shown in fig. 3 and 6, a round hole 19 for assembling the piston rod 5 in the oil cavity 20 is formed in the bottom surface of the bottom plate, and the round hole 19 is sealed by the welding backing plate 7.

Further, as shown in fig. 3 and 6, a sealing ring mounting groove 18 is arranged on the bottom plate positioned at the round hole 19, and a plurality of sealing rings 8 are arranged between the bottom plate and the backing plate 7.

As shown in fig. 1, the upper axle seat 2 is a side slot, so that the rotating axle on the wheel body 12 can move in the upper axle seat and the lower axle seat.

Therefore, the automatic adjustment of the mounting height of the towing chain wheel is realized through the hydraulic system, the problem that the tensioning oil cylinder device cannot continuously realize tensioning of the crawler system can be effectively solved, and the problems of increased design cost and manufacturing cost and difficult assembly of the final complete machine equipment caused by incapability of flexibly adjusting the mounting height of the towing chain wheel at the beginning of design can be solved. Meanwhile, the utility model can be applied to crawler-type engineering vehicles and has important significance for tensioning design of a crawler system in the field of engineering machinery.

As shown in fig. 1 and 6, the specific assembly process of the lifting type chain dragging wheel comprises the following steps: two sealing rings 9 are respectively installed in two sealing ring installation grooves 21 on the lower shaft seat 1, two sealing rings 10 are respectively installed in two sealing ring installation grooves 22 of the piston rod 5, the piston rod 5 with the sealing rings 10 installed is inserted from a round hole 19 of the lower shaft seat 1 and is installed in an oil cavity 20 of the lower shaft seat 1, and the installation plate 3 is installed and fixed on the piston rod 5 through an inner hexagon screw 6 and a gasket 11; next, the wheel body 12 is assembled with the mounting axle seat 4, and then the mounting axle seat 4 with the wheel body 12 is welded and fixed on the mounting board 3, and it should be noted that the welding mode is three-sided welding.

Next, the upper shaft seat 2 is welded and fixed on the lower shaft seat 1 in a groove filling way and three-side welding way; finally, the sealing ring 8 is installed in a sealing ring installation groove 18 on the lower shaft seat 1, and the base plate 7 is fixed in a round hole 19 of the lower shaft seat 1 in a full-circumference and groove-filling welding mode; it should be noted that the backing plate 7 should be pressed against the sealing ring 18 and that the backing plate 7 does not protrude out of the circular hole 19.

As shown in fig. 7, a traveling mechanism, a rail frame 26, and a crawler 24, a guide wheel 25, and the above-mentioned elevating drag wheel 27 are mounted on the rail frame 26.

Principle of tensioning a crawler belt by a lifting type towing wheel: during the initial design and assembly operation of the equipment, the lifting type towing chain wheel 27 is respectively installed and fixed on the longitudinal beam frame 26 through bolts, the pressure is relieved through the oil discharging holes 16, and after the crawler 24 is assembled, oil can be injected and pressurized through the oil filling holes 17 until the piston rod 5 extends to the installation height of the towing chain wheel 27 to meet the design installation height; aiming at the problem that when the whole equipment cannot be continuously tensioned by using the tensioning device due to the limited supporting range of the guide wheel 25 shaft seat track plate and the large suspension amount of the crawler belt 24, the lifting type dragging wheel 27 can be lifted to the height that the crawler belt 24 can normally work through the oiling and pressurizing mode of the oiling hole 17, namely, the tensioning function of the crawler belt 24 is completed.

The utility model also discloses a crawler-type engineering vehicle provided with the travelling mechanism.

The crawler-type engineering vehicle may be a hydraulic excavator.

The hydraulic excavator comprises the walking mechanism, a power device, a turning device and a working device.

The power device of the excavator generally adopts a diesel engine, is fixed on a turntable through a vibration reduction device, and provides power for a running gear, a turning gear, a working device and the like.

The turning device of the excavator turns the upper part leftwards or rightwards so as to excavate and cool the material.

The working device of the excavator is used for directly completing the excavating tasks, including a movable arm, a bucket rod, a bucket, a connecting rod mechanism and the like.

The hydraulic system of the excavator transmits the power output by the engine to the working device and the traveling device.

The electric system of excavator mainly detects some temperature, pressure, speed and switching value of engine, hydraulic pump, main valve and executive component (hydraulic cylinder and hydraulic motor) and transmits the detected data to the special-purpose controller of excavator, and the controller can synthesize various measured values, set values and operation signals to send out related control information to control engine, hydraulic pump, main valve and whole machine.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features contained in other embodiments, but not others, combinations of features of different embodiments are equally meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the above embodiments in combination according to known technical solutions and technical problems to be solved by the present application.

The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present utility model without departing from the scope of the utility model.

Claims

1. A lifting sprocket comprising:

a lower shaft seat, the inside of which is provided with a lifting component;

2. The lifting sprocket as set forth in claim 1, wherein said lower axle seat comprises:

3. A lifting sprocket as set forth in claim 2, wherein:

the lifting component is a piston rod, and the piston rod is a stepped rod with a narrow upper part and a wide lower part;

the narrow part of the piston rod penetrates out of the round hole and is fixed with the mounting shaft seat;

the side face of the bottom plate is provided with an oil filling hole and an oil draining hole which are communicated with the oil cavity, the piston rod moves upwards after oil is filled through the oil filling hole, and the piston rod moves downwards after oil is drained through the oil draining hole.

4. A lifting sprocket as set forth in claim 3, wherein:

a plurality of sealing rings are arranged between the wide part of the piston rod and the peripheral surface of the oil cavity opposite to each other;

a plurality of sealing rings are arranged between the narrow part of the piston rod and the peripheral surface opposite to the round hole.

5. A lifting sprocket as set forth in claim 3, wherein:

the mounting plate is arranged in the shaft seat cavity, a counter bore is formed in the mounting plate, a threaded hole is formed in the axial surface of the narrow part of the piston rod, and the mounting plate and the piston rod are fixed together through an inner hexagon screw;

the mounting shaft seat is welded on the mounting plate.

6. A lifting sprocket as set forth in claim 2, wherein:

the bottom surface of bottom plate is equipped with the round hole that is used for assembling lifting element in the oil pocket, the round hole seals it through the welding backing plate.

7. A lifting sprocket as set forth in claim 6, wherein:

a plurality of sealing rings are arranged between the bottom plate and the backing plate.

8. A lifting sprocket as set forth in claim 1, wherein:

the upper shaft seat is provided with a side slot, so that a rotating shaft on the wheel body can conveniently move in the upper shaft seat and the lower shaft seat.

9. The utility model provides a running gear, longeron frame which characterized in that:

the rail frame having mounted thereon tracks, guide wheels and lifting and lowering sprocket wheels as claimed in any one of claims 1 to 8.

10. The utility model provides a crawler-type engineering vehicle which characterized in that:

a running gear as claimed in claim 9 is mounted.