CN217053561U

CN217053561U - Gauge adjusting structure and engineering machinery

Info

Publication number: CN217053561U
Application number: CN202220736067.1U
Authority: CN
Inventors: 桂朋; 张忆宁; 李发展
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-07-26
Anticipated expiration: 2032-03-30

Abstract

The utility model relates to an engineering machine tool technical field, concretely relates to gauge is adjusted structure and engineering machine tool. The gauge adjusting structure includes: the telescopic pipe is suitable for being connected between a left beam and a right beam of the engineering machinery; the gear rack mechanism comprises a gear and a rack which are meshed with each other, the gear is suitable for being rotatably arranged on a supporting beam of the engineering machinery, and the fixed end of the rack is fixedly connected with one of the left beam and the right beam; the driving piece is connected with the gear, and drives the gear to rotate so as to drive the rack to move to adjust the track gauge. The utility model discloses a flexible speed, the distance of the flexible pipe of accurate regulation are realized to the rotational speed of adjusting the driving piece, realize that left beam or right beam are flexible adjustable controllable, and when engineering machine tool during operation, driving piece and gear drive mechanism auto-lock, the gauge is adjusted the structure and can not receive the effect of external force and stretch out and draw back, has avoided adopting hydraulic cylinder to cause flexible uncontrollable condition among the prior art.

Description

Gauge adjusting structure and engineering machinery

Technical Field

The utility model relates to an engineering machine tool technical field, concretely relates to gauge is adjusted structure and engineering machine tool.

Background

At present, the gauge adjustment of excavator adopts hydraulic cylinder to drive, and when the excavator during operation, hydraulic cylinder leaks in easily, and when the excavator received external force, hydraulic cylinder's piston rod withdraws, causes the unable locking of the gauge of excavator, and uncontrolled flexible to, the unable accurate control of flexible speed, the flexible distance of hydraulic cylinder's piston rod.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the adoption hydraulic cylinder among the prior art and adjusting the gauge and lead to the uncontrollable defect of flexible of when excavator during operation piston rod to a gauge is adjusted structure and engineering machine tool are provided.

In order to solve the above problem, the utility model provides a gauge is adjusted structure, include: the telescopic pipe is suitable for being connected between a left beam and a right beam of the engineering machinery; the gear rack mechanism comprises a gear and a rack which are meshed with each other, the gear is suitable for being rotatably arranged on a supporting beam of the engineering machinery, and the fixed end of the rack is fixedly connected with one of the left beam and the right beam; the driving piece is connected with the gear, and drives the gear to rotate so as to drive the rack to move to adjust the track gauge.

Optionally, the number of the telescopic pipes is two, and the two telescopic pipes are located on two sides of the gear.

Optionally, the number of the racks is two, the two racks are arranged symmetrically with respect to the center of rotation of the gear, the fixed end of one rack is fixedly connected with the left beam, and the fixed end of the other rack is fixedly connected with the right beam.

Optionally, one end of the rack far away from the fixed end is connected with the telescopic pipe in a sliding manner.

Optionally, the gauge adjusting structure further comprises a reinforcing sleeve, the telescopic pipe comprises at least two pipes which are sleeved and arranged and can slide relatively, the slidable reinforcing sleeve is sleeved on the pipe body far away from the fixed end of the rack in the telescopic pipe, and the reinforcing sleeve is fixedly connected with one end, far away from the fixed end, of the rack.

Optionally, a limiting part is arranged on the outer wall of the pipe body far away from the fixed end of the rack in the telescopic pipe, and the limiting part can be matched with the reinforcing sleeve.

Optionally, the gauge adjusting structure further comprises at least one sliding block, the sliding block is fixed inside the reinforcing sleeve, and the sliding block is in sliding fit with the outer wall of the pipe body, far away from the fixed end of the rack, in the telescopic pipe.

Optionally, the track gauge adjusting structure further includes a first fastening element, one end of the rack, which is far away from the fixed end, is located inside the reinforcing sleeve, and the first fastening element penetrates through the reinforcing sleeve and one end of the rack, which is far away from the fixed end, is in threaded connection with one of the sliding blocks.

Optionally, the driving member is a hydraulic motor or an electric motor.

The utility model also provides an engineering machine tool, include: the track gauge adjusting structure is described above.

The utility model has the advantages of it is following:

1. the driving piece drives the gear to rotate, the gear rotates to drive the rack to move, the length of the telescopic pipe can be adjusted, and then the distance between the left beam and the right beam can be adjusted, so that the track gauge of the engineering machinery is adjusted. Above-mentioned gauge is adjusted structure and can realize the flexible speed, the distance of the flexible pipe of accurate regulation through the rotational speed of adjusting the driving piece, and then realize that left beam or right beam are flexible adjustable controllable, and when engineering machine tool during operation, driving piece and gear drive mechanism auto-lock, gauge is adjusted the structure and can not receive the effect of external force and stretch out and draw back, has effectually avoided adopting hydraulic cylinder to cause flexible uncontrollable condition among the prior art.

2. The left beam and the right beam are connected through two telescopic pipes, so that the motion of the left beam or the right beam is more stable, and the situation that the left beam and the right beam are inclined is prevented.

3. The left beam and the right beam can be extended outwards or retracted inwards at the same time due to the arrangement of the two racks, walking operation on complex terrains can be completed smoothly, the excavating work of the excavator is guaranteed to be completed smoothly, and the trafficability, stability and flexibility of the excavator are improved greatly.

Drawings

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

Fig. 1 shows a schematic top view of a gauge adjusting structure and a left and right beam in cooperation according to an embodiment of the present invention;

FIG. 2 shows a schematic cross-sectional view A-A of the gauge adjusting structure of FIG. 1 in cooperation with left and right side rails;

FIG. 3 shows an enlarged schematic view at B of the track gauge adjusting structure of FIG. 2 in cooperation with left and right beams;

fig. 4 shows a partial perspective view of the gage adjustment structure of fig. 1 in cooperation with left and right rails.

Description of reference numerals:

10. a telescopic pipe; 11. an inner tube; 12. an outer tube; 21. a gear; 22. a rack; 30. a reinforcing sleeve; 40. a limiting member; 50. a slider; 61. a first fastener; 62. a second fastener; 81. a left beam; 82. and a right beam.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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 "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 according to specific situations by those of ordinary skill in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the track gauge adjusting structure of the present embodiment includes: the telescopic pipe 10, the gear rack mechanism and the driving part are suitable for being connected between a left beam 81 and a right beam 82 of the engineering machinery; the gear rack mechanism comprises a gear 21 and a rack 22 which are meshed with each other, the gear 21 is suitable for being rotatably arranged on a support beam of the engineering machinery, and the fixed end of the rack 22 is fixedly connected with one of the left beam 81 and the right beam 82; the driving member is connected with the gear 21, and the driving member drives the gear 21 to rotate so as to drive the rack 22 to move to adjust the track gauge.

By applying the track gauge adjusting structure of the embodiment, the driving member drives the gear 21 to rotate, and the gear 21 rotates to drive the rack 22 to move, so that the length of the telescopic pipe 10 can be adjusted, and further, the distance between the left beam 81 and the right beam 82 can be adjusted, thereby adjusting the track gauge of the engineering machinery. Above-mentioned gauge is adjusted structure and can realize the flexible speed, the distance of the flexible pipe 10 of accurate regulation through the rotational speed of adjusting the driving piece, and then realize that left beam 81 or right beam 82 stretch out and draw back adjustable controllable, and when engineering machine tool during operation, driving piece and gear drive mechanism auto-lock, gauge is adjusted the structure and can not receive the effect of external force and stretch out and draw back, has effectually avoided adopting hydraulic cylinder to cause the uncontrollable condition of stretching out and drawing back among the prior art.

In this embodiment, the number of the telescopic pipes 10 is two, two telescopic pipes 10 are located at two sides of the gear 21, and the left beam 81 and the right beam 82 are connected by two telescopic pipes 10, so that the movement of the left beam 81 or the right beam 82 is more stable, and the left beam 81 and the right beam 82 are prevented from being inclined.

In this embodiment, the number of the racks 22 is two, two racks 22 are arranged in central symmetry with respect to the rotation center of the gear 21, the fixed end of one rack 22 is fixedly connected to the left beam 81, and the fixed end of the other rack 22 is fixedly connected to the right beam 82. The arrangement of the two racks 22 enables the left beam 81 and the right beam 82 to simultaneously extend outwards or retract inwards, so that walking operation on complex terrains can be smoothly completed, the excavating work of the excavator is guaranteed to be smoothly completed, and the trafficability, stability and flexibility of the excavator are greatly improved. It will be appreciated that, as an alternative embodiment, only one rack 22 may be provided, where one rack 22 may drive either the left beam 81 or the right beam 82 to extend outwardly or retract inwardly.

In this embodiment, the end of the rack 22 away from the fixed end is slidably connected to the telescopic tube 10, so as to support the end of the rack 22 away from the fixed end, thereby ensuring that the rack 22 is always engaged with the gear 21, and improving the structural stability.

In this embodiment, as shown in fig. 1 to fig. 4, the track gauge adjusting structure further includes a reinforcing sleeve 30, the telescopic tube 10 includes two tube bodies that are sleeved and can slide relatively, the two tube bodies are suitable for being fixedly connected to the left beam 81 and the right beam 82 of the engineering machine in a one-to-one correspondence manner, the tube body far away from the fixed end of the rack 22 in the telescopic tube 10 is sleeved with the slidable reinforcing sleeve 30, and the reinforcing sleeve 30 is fixedly connected to one end of the rack 22 far away from the fixed end. The reinforcing sleeve 30 is slidably sleeved on the tube body of the telescopic tube 10 far away from the fixed end of the rack 22, and the reinforcing sleeve 30 is fixedly connected with the rack 22, so that the connection mode is simple and convenient, and the integral structure is simplified. It can be understood that the number of the pipe bodies may also be more than three, and at this time, the pipe body on the outermost side and the pipe body on the innermost side are fixedly connected to the left beam 81 and the right beam 82 of the engineering machine in a one-to-one correspondence manner.

In this embodiment, a limiting member 40 is disposed on an outer wall of the tube body of the telescopic tube 10 away from the fixed end of the rack 22, and the limiting member 40 can be engaged with the reinforcing sleeve 30. When the left beam 81 and the right beam 82 extend outwards at the same time, the reinforcing sleeve 30 is limited by the limiting member 40, and the two tube bodies of the telescopic tube 10 are prevented from being separated. When the left beam 81 and the right beam 82 retract inwards at the same time, one rack 22 and the other rack 22 are limited by the left beam 81 and the right beam 82, the number of limiting pieces is reduced, and the cost is saved. Preferably, the limiting member 40 is a limiting block or a limiting switch.

In this embodiment, the track gauge adjusting structure further comprises at least one sliding block 50, the sliding block 50 is fixed inside the reinforcing sleeve 30, and the sliding block 50 is slidably engaged with the outer wall of the tube body of the telescopic tube 10 away from the fixed end of the rack 22. Reinforcing sleeve 30 is connected with the slide block of telescopic tube 10 through slide block 50, so that abrasion to telescopic tube 10 and reinforcing sleeve 30 is reduced, service life of reinforcing sleeve 30 and telescopic tube 10 is prolonged, and when slide block 50 or telescopic tube 10 is seriously abraded, slide block 50 or telescopic tube 10 can be replaced.

In this embodiment, the track gauge adjusting structure further includes a first fastening member 61, one end of the rack 22 away from the fixed end is located inside the reinforcing sleeve 30, the first fastening member 61 passes through the reinforcing sleeve 30, one end of the rack 22 away from the fixed end is in threaded connection with one slider 50, the rest sliders 50 are connected with the reinforcing sleeve 30 through a second fastening member 62, and the reinforcing sleeve 30, the rack 22 and the slider 50 are fixed through the first fastening member 61, which is simple and convenient in fixing manner. Preferably, the number of the first fastening members 61 is two, etc.

It should be noted that: the directions or positional relationships indicated by "left", "right", "front", "rear", and the like are based on the directions and positional relationships when an operator drives the construction machine in the cab.

In this embodiment, as shown in fig. 1 and 4, the two extension tubes 10 are a front extension tube and a rear extension tube, the two tubes are an inner tube 11 and an outer tube 12, the two racks 22 are a front rack and a rear rack, the number of the sliding blocks 50 corresponding to each extension tube 10 is four, the four sliding blocks 50 are an upper sliding block, a lower sliding block, a front sliding block and a rear sliding block, the upper sliding block is in sliding fit with the top wall of the extension tube 10, the lower sliding block is in sliding fit with the bottom wall of the extension tube, the front sliding block is in sliding fit with the front wall of the extension tube 10, the rear sliding block is in sliding fit with the rear wall of the extension tube 10, the outer tubes 12 of the front extension tube and the rear extension tube are fixedly connected with a right beam 82, the inner tubes 11 of the front extension tube and the rear extension tube are fixedly connected with a left beam 81, the front rack is fixedly connected with the right beam 82, the rear rack is fixedly connected with the left beam 81, the two reinforcement sleeves 30 are a front reinforcement sleeve and a rear reinforcement sleeve, the front reinforcing sleeve is connected with the inner tube 11 of the front telescopic tube in a sliding way and is fixedly connected with the front rack, the rear sliding block, the front rack and the front reinforcing sleeve in the front reinforcing sleeve are connected through a first fastener 61, the upper sliding block, the front sliding block and the lower sliding block in the front reinforcing sleeve are connected with the front reinforcing sleeve through a second fastener 62, the front sliding block, the rear rack and the rear reinforcing sleeve in the rear reinforcing sleeve are connected through the first fastener 61, the upper sliding block, the rear sliding block and the lower sliding block in the rear reinforcing sleeve are connected with the rear reinforcing sleeve through the second fastener 62,

specifically, the first fastening piece 61 and the second fastening piece 62 are both bolts, the length of the first fastening piece 61 is greater than that of the second fastening piece 62, and a threaded hole is formed in the slider 50. The gauge adjusting structure further comprises a gasket, and the gasket is arranged between the bolt head of the bolt and the outer wall of the reinforcing sleeve.

In this embodiment, the driving member is a hydraulic motor or an electric motor, wherein the hydraulic motor drives the output shaft of the hydraulic motor to rotate by hydraulic pressure, and the electric motor drives the output shaft of the electric motor to rotate by electric energy.

The utility model also provides an engineering machine tool, it includes: the track gauge adjusting structure is described above.

In this embodiment, the engineering machine further includes a chassis and the like, as shown in fig. 1 and 4, the chassis includes a support beam, a left beam 81 and a right beam 82, a driving member is disposed on the support beam, wheels or crawlers are mounted on the left beam 81 and the right beam 82, at this time, the engineering machine is in a wheel type or crawler type, a track gauge refers to a distance between the left and right wheels or a distance between the left and right crawlers, a hydraulic motor is adopted to drive a gear rack mechanism, automatic extension and retraction of the left and right beams are achieved, extension and retraction speeds and extension distances of the left and right beams are accurately adjusted, and when the locking gear 21 is used, the engineering machine is in operation, a track gauge adjusting structure is fixed, and an uncontrollable extension and retraction phenomenon cannot occur.

In this embodiment, the engineering machine is an excavator, a crane, a rotary drilling rig, or the like.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

1. the track gauge adjusting structure comprises two telescopic pipes 10 which can stretch left and right, a gear rack transmission mechanism and a hydraulic motor, two racks 22 are fixed on a left beam and a right beam, an inner pipe 11 and an outer pipe 12 of each telescopic pipe 10 slide relatively, a reinforcing sleeve 30 is fixed on the racks 22 through bolts and gaskets, the reinforcing sleeve 30 and the telescopic pipes 10 slide relatively, and the left beam and the right beam realize automatic stretching through the driving of the hydraulic motor and the transmission of the gear rack mechanism; when the left and right beams retract inwards, the limit is realized through the rack 22 and the left and right side beams; when the left beam and the right beam extend outwards, the limiting is realized through the limiting block; when the telescopic mechanism extends out or retracts to a certain position, the hydraulic motor is self-locked, the left side beam and the right side beam do not slide relatively, the whole telescopic mechanism is fixed, the phenomenon of uncontrollable stretching is avoided, the precision is higher in the stretching process, and the stretching automation and the stretching adjustability and controllability are realized.

2. The left beam and the right beam are automatically stretched and simultaneously stretched or retracted through the transmission of a gear 21 and two racks 22, and the stretching speed, the retracting speed, the stretching distance and the retracting distance of the left beam and the right beam are adjustable and controllable; after the gear 21 and the rack 22 are worn, the gear can be detached for replacement, and other parts are not affected.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A gauge adjusting structure, comprising:

the telescopic pipe (10) is suitable for being connected between a left beam (81) and a right beam (82) of the engineering machinery;

the gear rack mechanism comprises a gear (21) and a rack (22) which are meshed with each other, the gear (21) is suitable for being rotatably arranged on a supporting beam of the engineering machinery, and the fixed end of the rack (22) is fixedly connected with one of the left beam (81) and the right beam (82);

the driving part is connected with the gear (21) and drives the gear (21) to rotate so as to drive the rack (22) to move to adjust the track gauge.

2. Gauge adjustment structure according to claim 1, characterized in that the number of telescopic tubes (10) is two, two telescopic tubes (10) being located on either side of the gear wheel (21).

3. The track gauge adjusting structure according to claim 2, wherein the number of the racks (22) is two, two of the racks (22) are arranged symmetrically with respect to the center of rotation of the gear (21), one fixed end of the rack (22) is fixedly connected to the left beam (81), and the other fixed end of the rack (22) is fixedly connected to the right beam (82).

4. A gauge adjustment structure according to claim 1 or 3, wherein the end of the rack (22) remote from the fixed end is slidably connected to the telescopic tube (10).

5. The track gauge adjusting structure according to claim 4, characterized in that the track gauge adjusting structure further comprises a reinforcing sleeve (30), the telescopic pipe (10) comprises at least two pipe bodies which are sleeved and arranged and can be relatively slidable, the pipe body of the telescopic pipe (10) far away from the fixed end of the rack (22) is sleeved with the slidable reinforcing sleeve (30), and the reinforcing sleeve (30) is fixedly connected with one end of the rack (22) far away from the fixed end.

6. The gauge adjustment structure according to claim 5, wherein a limiting member (40) is provided on an outer wall of the tube body of the telescopic tube (10) away from the fixed end of the rack (22), and the limiting member (40) is capable of cooperating with the reinforcing sleeve (30).

7. Gauge adjustment structure according to claim 5, characterized in that it further comprises at least one slider (50), said slider (50) being fixed inside said reinforcing sleeve (30), said slider (50) being in sliding engagement with the outer wall of said tubular body of said telescopic tube (10) remote from the fixed end of said rack (22).

8. The structure of claim 7, further comprising a first fastener (61), wherein an end of the rack (22) away from the fixed end is located inside the reinforcing sleeve (30), and the first fastener (61) is threaded with one of the sliders (50) through the reinforcing sleeve (30) and an end of the rack (22) away from the fixed end.

9. A gauge adjustment arrangement according to claim 1, wherein the drive member is a hydraulic or electric motor.

10. A work machine, comprising: the gage adjustment structure as claimed in any one of claims 1 to 9.