CN219220321U - Mast assembly and working machine - Google Patents

Abstract

The utility model relates to the technical field of working machines, in particular to a mast assembly and a working machine. In the mast assembly, a telescoping device is connected between the upper mast and the carriage, and the telescoping device is capable of driving the carriage to transition between the extended position and the retracted position. In the state of the extension position, the pulley yoke is supported to the position of the extension upper mast; in the retracted state, the pulley frame is supported at the upper end of the upper mast. Through this kind of structure setting, when the hoist and mount drilling rod, telescoping device drive pulley yoke removes to the extension position to increase the drilling rod length that can hoist and mount. After the hoisting of the drill rod is finished, the telescopic device drives the pulley yoke to move to a retracting position, so that the pulley yoke is supported at the upper end part of the upper mast, and subsequent installation and drilling operations are performed. Therefore, the upper mast plays full potential of hoisting the drill rod, and the length of the drill rod capable of being hoisted by operation is increased.

Description

Mast assembly and working machine

Technical Field

The utility model relates to the technical field of working machines, in particular to a mast assembly and a working machine.

Background

The rotary drilling rig is a construction machine suitable for pore-forming operation in building foundation engineering. Before the drilling operation, the drill rod needs to be hoisted by using a mast. The length of the drill rod is matched with the height of the mast. In the actual use process, the rotary drilling rig needs to tilt the mast forward by 5 degrees when hoisting the drill rod. Therefore, the distance between the mast and the ground is reduced, the mast cannot exert the full height potential of the mast to hoist the drill rod, and the length of the assembled drill rod is reduced.

Disclosure of Invention

The utility model provides a mast assembly and a working machine, which are used for solving the problem that a mast in the existing working machine cannot exert the full height potential of the mast to hoist a drill rod.

According to a first aspect of the utility model, there is provided a mast assembly comprising an upper mast, a pulley frame and a telescopic device.

The telescopic device is connected between the upper mast and the pulley frame. And the telescoping device is capable of driving the pulley frame to switch between an extended position and a retracted position. In the extended position, the pulley frame is supported to a position where the upper mast is extended; in the retracted state, the pulley frame is supported at the upper end of the upper mast.

According to the mast assembly provided by the utility model, the pulley frame comprises a pulley frame body, and the telescopic device is connected between the pulley frame body and the upper mast. And the telescoping device is located outside the upper mast. The telescoping device is capable of driving the pulley yoke body to transition between the extended position and the retracted position.

According to the mast assembly provided by the utility model, in the state of the extension position, the telescopic device supports the pulley frame body to the position of extending the upper mast; in the retracted state, the pulley frame body is supported at the upper end of the upper mast.

According to the mast assembly provided by the utility model, the pulley frame further comprises a telescopic guide cylinder. The telescopic guide cylinder is connected with the pulley yoke body. The telescopic guide cylinder is sleeved on the inner side of the upper mast in a sliding manner.

According to the mast assembly provided by the utility model, the fastening connecting piece is arranged between the pulley frame body and the upper mast. In the retracted state, the fastening connection piece is connected between the pulley frame body and the upper mast.

According to the mast assembly provided by the utility model, the wear-resistant supporting bar is arranged between the telescopic guide cylinder and the inner side wall of the upper mast. The wear-resistant support bar is used for reducing friction force between the telescopic guide cylinder and the upper mast.

According to the mast assembly provided by the utility model, the wear-resistant support bar comprises a first support part and a second support part. The first supporting part is connected with the outer side wall of the telescopic guide cylinder, and the second supporting part is connected with the inner side wall of the upper mast. The first supporting part is in sliding connection with the second supporting part.

According to the mast assembly provided by the utility model, the telescopic device comprises a hydraulic cylinder. The hydraulic cylinder is connected between the pulley yoke and the upper mast through a hinge seat.

According to the mast assembly provided by the utility model, two hydraulic cylinders are symmetrically arranged between the pulley yoke and the upper mast.

According to a second aspect of the utility model there is provided a work machine comprising a mast assembly as described above.

In the mast assembly provided by the utility model, a telescopic device is arranged between the upper end part of the upper mast and the pulley frame. The telescoping device is capable of driving the carriage relative to the upper mast to translate the carriage between the extended and retracted positions. When the telescopic device drives the pulley frame to be switched to the extension position, the pulley frame is supported to the position of the extension upper mast. When the telescopic device drives the pulley frame to be converted into the retraction position, the pulley frame is retracted to a position supported at the upper end of the upper mast.

By this structural arrangement, a telescopic device is provided between the upper mast and the pulley frame. When the drill rod needs to be hoisted, the telescopic device drives the pulley frame to move to the extension position so as to increase the length of the drill rod which can be hoisted by the upper mast. After the hoisting of the drill rod is finished, the telescopic device drives the pulley yoke to move to a retracting position, so that the pulley yoke is supported at the upper end part of the upper mast, and subsequent installation and drilling operations are performed. Therefore, the upper mast plays the full potential of hoisting the drill rod, and the length of the drill rod which can be hoisted by the upper mast is increased. Or, compared with the prior art, when the upper mast with the same length is used, the mast assembly can hoist longer drill rods, and drilling operation with larger hole depth is realized.

Further, since the work machine includes the mast assembly as described above, it also provides the advantages described above.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a mast assembly according to the present utility model, wherein the carriage is in a retracted position;

FIG. 2 is a schematic illustration of a mast assembly according to the present utility model, wherein the carriage is in an extended position;

FIG. 3 is a schematic cross-sectional view of an upper mast and telescoping guiding drum in a mast assembly according to the present utility model;

reference numerals:

100. an upper mast; 200. a pulley frame; 201. a pulley frame body; 300. a telescoping device; 400. a telescopic guide cylinder; 500. wear-resistant support bars; 501. a first support portion; 502. and a second supporting part.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus 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 embodiments of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, 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 embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples, as well as features of various embodiments or examples, described in this specification may be combined and combined to further clarify the objects, aspects and advantages of embodiments of the present utility model, without departing from the spirit and scope of the utility model, and it should be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

A mast assembly and a work machine according to embodiments of the present utility model are described below with reference to fig. 1-3. It should be understood that the following description is only illustrative of the embodiments of the utility model and is not intended to limit the utility model in any way.

Embodiments of the first aspect of the present utility model provide a mast assembly, as shown in fig. 1 and 2, comprising an upper mast 100, a pulley frame 200, and a telescoping device 300.

Wherein the telescopic device 300 is connected between the upper mast 100 and the pulley frame 200. And telescoping device 300 is capable of driving pulley carriage 200 between the extended and retracted positions. In the extended position state, the pulley yoke 200 is supported to a position where the upper mast 100 is extended; in the retracted state, the pulley frame 200 is supported by the upper end portion of the upper mast 100.

In the mast assembly provided by the present utility model, a telescopic device 300 is provided between the upper end of the upper mast 100 and the pulley frame 200. Telescoping device 300 is capable of driving carriage 200 to move relative to upper mast 100 to transition carriage 200 between the extended and retracted positions. When the telescopic device 300 drives the pulley frame 200 to be shifted to the extended position, the pulley frame 200 is supported to the position of the extended upper mast 100. When the telescopic device 300 drives the pulley frame 200 to shift to the retracted position, the pulley frame 200 is retracted to a position supported at the upper end of the upper mast 100.

With this structural arrangement, a telescoping device 300 is provided between the upper mast 100 and the pulley frame 200. When it is desired to hoist a drill pipe, the telescoping device 300 drives the pulley yoke 200 to an extended position to increase the length of drill pipe that the upper mast 100 can hoist. After the hoisting of the drill rod is completed, the telescopic device 300 drives the pulley frame 200 to move to the retracted position, so that the pulley frame 200 is supported on the upper end part of the upper mast 100, and subsequent installation and drilling operations are performed. Thereby allowing the upper mast 100 to exert its full height potential for hoisting the drill pipe, increasing the length of drill pipe that the upper mast 100 can hoist. Alternatively, the mast assembly can hoist longer drill rods and achieve greater hole depths of drilling operations when using the same length of upper mast 100 as compared to the prior art.

In one embodiment of the present utility model, the pulley frame 200 includes a pulley frame body 201. The telescopic device 300 is connected between the pulley frame body 201 and the upper mast 100. And the telescopic device 300 is located outside the upper mast 100. Telescoping device 300 is capable of driving pulley carriage body 201 between an extended position and a retracted position.

Further, in one embodiment of the utility model, in the extended position, the telescoping device 300 supports the pulley yoke body 201 to the position of the extended upper mast 100; in the retracted state, the pulley frame body 201 is supported by the upper end portion of the upper mast 100.

For example, as shown in fig. 1 and 2, the pulley frame 200 includes a pulley frame body 201, a pulley is provided on the pulley frame body 201, and a wire rope for hoisting is sleeved on the pulley. The telescopic device 300 is arranged outside the upper mast 100. By providing the telescopic device 300 outside the upper mast 100, the telescopic device 300 can be easily attached, detached, and maintained. Specifically, one end of the telescopic device 300 is connected to the outer sidewall of the upper mast 100, and the other end of the telescopic device 300 is connected to the bottom of the pulley frame body 201. When the telescopic device 300 is extended, it can drive the pulley frame body 201 to move to a side far away from the upper mast 100, thereby increasing the hoisting height of the upper mast 100. When the telescopic device 300 is contracted, it can drive the pulley frame body 201 to move to the side close to the upper pole until the pulley frame body 201 is supported on the upper end portion of the upper mast 100.

Before drilling operation, firstly, the telescopic device 300 drives the pulley frame body 201 to be converted into an extension position; then the upper mast 100 and the pulley frame body 201 are tilted forwards by 5 degrees to hoist the drill rod, and the drill rod is sleeved into the power head; causing the telescoping device 300 to drive the pulley yoke body 201 to shift to the retracted position and to mast; and (5) erecting the mast for drilling after installing the follow-up frame.

In one embodiment of the utility model, the pulley frame 200 further includes a telescoping guiding cylinder 400. The telescopic guide cylinder 400 is connected to the pulley frame body 201. The telescopic guide cylinder 400 is slidably sleeved on the inner side of the upper mast 100.

Further, in one embodiment of the utility model, a secure connection is provided between the pulley yoke body 201 and the upper mast 100. In the retracted state, the fastening connection is connected between the pulley frame body 201 and the upper mast 100.

For example, as shown in fig. 2, one end of the telescopic guide cylinder 400 is connected to the bottom of the pulley frame body 201, and the other end of the telescopic guide cylinder 400 is slidably connected to the inside of the upper mast 100. In the process of driving the pulley frame body 201 to move by the telescopic device 300, the telescopic guide cylinder 400 can move along the upper mast 100 to provide a guide supporting function for the pulley frame body 201. A connecting flange is provided between the bottom of the pulley frame body 201 and the end of the upper mast 100. When the hoisting of the drill rod is completed, the telescopic device 300 drives the pulley frame body 201 to be converted into a retracted position, so that the connecting flange between the pulley frame body 201 and the end part of the upper mast 100 is attached. Then the mast is laid down, a follow-up frame is arranged, and a fastening bolt is arranged on the connecting flange to erect the mast drilling. Therefore, when drilling operation is performed, the pulley frame body 201 is supported and connected to the end of the upper mast 100, so that the telescopic device 300 is in a non-stressed state, the telescopic device 300 can be effectively protected, and the service life of the telescopic device 300 can be prolonged.

In one embodiment of the utility model, a wear resistant support bar 500 is provided between the telescoping guiding drum 400 and the inside wall of the upper mast 100. The wear support bar 500 serves to reduce friction between the telescoping guiding drum 400 and the upper mast 100.

Further, in one embodiment of the present utility model, the wear support bar 500 includes a first support portion 501 and a second support portion 502. The first support 501 is connected to the outer wall of the telescopic guide tube 400. The second support 502 is connected to the inner side wall of the upper mast 100. The first supporting portion 501 is slidably connected to the second supporting portion 502.

For example, as shown in fig. 2 and 3, the upper mast 100 and the telescopic guide 400 are each rectangular cylindrical structures. Wear-resistant support bars 500 are provided between the four side walls of the upper mast 100 and the corresponding side walls of the telescopic guide cylinder 400. In this embodiment, two first supporting portions 501 are disposed on each side wall of the upper mast 100 at intervals, and correspondingly, two second supporting portions 502 are disposed on the corresponding positions of the side walls of the telescopic guide cylinder 400 at intervals. The first supporting portions 501 and the second supporting portions 502 are attached in one-to-one correspondence. And each of the first support portion 501 and the second support portion 502 is capable of supporting the upper mast 100 and the telescopic guide cylinder 400 to a coaxial position. During the movement of the telescopic guide cylinder 400, the first support 501 slides along the second support 502. For example, the first support portion 501 and the second support portion 502 include wear resistant steel plates.

By arranging the wear-resistant support bar 500 between the telescopic guide cylinder 400 and the upper mast 100, direct friction between the telescopic guide cylinder 400 and the upper mast 100 can be avoided, and the upper mast 100 and the telescopic guide cylinder 400 are further effectively protected.

In one embodiment of the utility model, telescoping device 300 includes a hydraulic cylinder. The hydraulic cylinder is connected between the pulley yoke 200 and the upper mast 100 by a hinge mount.

Further, in still another embodiment of the present utility model, two hydraulic cylinders are symmetrically provided between the pulley frame 200 and the upper mast 100.

For example, as shown in fig. 1 and 2, two hydraulic cylinders are symmetrically provided on the outer side of the carriage 200 and the upper mast 100 with respect to the center axis of the upper mast 100 as a symmetry axis. The pulley frame body 201 is provided with a first hinge seat at the bottom and a second hinge seat on the sidewall of the upper mast 100. The end part of a piston rod of the hydraulic cylinder is connected with the first hinging seat, and the end part of a cylinder barrel of the hydraulic cylinder is connected with the second hinging seat.

Embodiments of the second aspect of the utility model provide a work machine comprising a mast assembly as described above.

For example, the work machine includes a rotary drilling machine.

It should be noted that the above-mentioned embodiment is only an exemplary embodiment of the present utility model, and should not be construed as limiting the present utility model in any way. That is, the above-described work machines include, but are not limited to, rotary drilling rigs.

Further, since the work machine includes the mast assembly as described above, it also provides the advantages described above.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A mast assembly, comprising: an upper mast, a pulley yoke and a telescopic device,

the telescopic device is connected between the upper mast and the pulley frame, and can drive the pulley frame to switch between an extension position and a retraction position, and in the state of the extension position, the pulley frame is supported to a position for extending the upper mast; in the retracted state, the pulley frame is supported at the upper end of the upper mast.

2. A mast assembly according to claim 1, wherein the carriage comprises a carriage body, the telescopic means being connected between the carriage body and the upper mast and being located outside the upper mast, the telescopic means being capable of driving the carriage body to switch between the extended position and the retracted position.

3. A mast assembly according to claim 2, wherein in the extended position the telescopic means supports the pulley yoke body to a position extending the upper mast; in the retracted state, the pulley frame body is supported at the upper end of the upper mast.

4. A mast assembly according to claim 2, further comprising a telescoping guiding drum connected to the pulley frame body, the telescoping guiding drum slidably sleeved to the inner side of the upper mast.

5. A mast assembly according to claim 4, wherein a fastening connection is provided between the pulley carriage body and the upper mast, the fastening connection being connected between the pulley carriage body and the upper mast in the retracted position.

6. The mast assembly of claim 4, wherein a wear support bar is disposed between the telescoping guiding cylinder and the inner side wall of the upper mast for reducing friction between the telescoping guiding cylinder and the upper mast.

7. The mast assembly of claim 6, wherein the wear support bar comprises a first support portion connected to an outer sidewall of the telescoping guiding cylinder and a second support portion connected to an inner sidewall of the upper mast, the first support portion being slidably connected to the second support portion.

8. A mast assembly according to any one of claims 1 to 7, wherein the telescopic means comprises a hydraulic cylinder connected between the pulley carriage and the upper mast by a hinge mount.

9. A mast assembly according to claim 8, wherein two of the hydraulic cylinders are symmetrically disposed between the carriage and the upper mast.

10. A work machine comprising a mast assembly according to any one of claims 1 to 9.

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