CN108688740B - Crawler-type chassis structure and rotary drilling rig - Google Patents

Abstract

The present disclosure relates to a crawler-type chassis structure and rotary drilling rig, the crawler-type chassis structure includes: chassis (100) and track frame (200) be equipped with a plurality of box articulates piece (220) on track frame (200) be equipped with on chassis (100) respectively with a plurality of articulated cooperation structure (110) of a plurality of box articulates piece (220), box articulates piece (220) detachably articulates articulated on articulated cooperation structure (110). According to the detachable hanging structure, the plurality of box-shaped hanging pieces are arranged on the crawler frame and are detachably connected with the hanging matching structure arranged on the chassis, so that the disassembling and assembling process between the chassis and the crawler frame is simplified, and the box-shaped hanging pieces are used for bearing larger work load so as to ensure the work demands of engineering equipment with larger tonnage.

Description

Crawler-type chassis structure and rotary drilling rig

Technical Field

The disclosure relates to the field of engineering machinery, in particular to a crawler-type chassis structure and a rotary drilling rig.

Background

The rotary drilling rig is a construction machine suitable for pore-forming operation in building foundation engineering. The method is mainly suitable for soil layer construction of sandy soil, cohesive soil, silty soil and the like, and is widely applied to foundation construction of various foundations such as cast-in-place piles, continuous walls, foundation reinforcement and the like. The prior large rotary drilling rig has larger external dimension and relatively poorer trafficability. When equipment transfer is needed, the rotary drilling rig is disassembled, and different structural parts are transported respectively.

In some existing rotary drilling rigs, an inserting structure is adopted between a chassis and a crawler frame, and the structure is complicated and time-consuming in assembly and disassembly, and a plurality of cranes are needed to be matched. In some engineering equipment, a hanging structure is adopted between the chassis and the crawler frame, but the work load born by the hanging structure is limited, and the acting load of the rotary drilling rig with larger tonnage is difficult to support.

Disclosure of Invention

In view of the above, embodiments of the present disclosure provide a crawler chassis structure and a rotary drilling rig, which can simplify the disassembly and assembly between the chassis and the crawler frame, and can bear a larger workload.

In one aspect of the present disclosure, there is provided a crawler chassis structure comprising: the crawler belt comprises a chassis and a crawler belt frame, wherein a plurality of box-shaped hanging pieces are arranged on the crawler belt frame, a plurality of hanging matching structures which are respectively matched with the box-shaped hanging pieces are arranged on the chassis, and the box-shaped hanging pieces are detachably hung on the hanging matching structures.

Further, the hooking mating structure includes: the box-type hanging pieces are inserted into the space surrounded by the paired supporting plates, and are connected and fixed with the paired supporting plates through the pin shaft groups.

Further, the pin set includes: the box-type hanging piece is provided with a half-open hole for hanging the first pin shaft and a closed hole for the second pin shaft to pass through.

Further, the hooking mating structure further includes: the pin shaft oil cylinders are arranged on one sides of the paired support plates and used for driving the second pin shafts to execute pin inserting or pin pulling operations relative to the through holes and the closed holes arranged on the paired support plates according to received local or remote control instructions.

Further, the hooking mating structure further includes: the transition connecting device is arranged on the chassis and fixed with the cylinder barrel of the pin shaft oil cylinder, the second pin shaft is arranged in the inner cavity of the transition connecting device, one end of the second pin shaft is connected with the piston rod of the pin shaft oil cylinder, and the other end of the second pin shaft is aligned with the through holes arranged on the pair of support plates.

Further, a limiting plate is further arranged on the chassis and located above the hanging matching structure, and the box-shaped hanging piece is hung to the hanging matching structure, and the limiting plate supports the box-shaped hanging piece in the horizontal direction.

Further, a plurality of reinforcing rib plates are further arranged on the surface of the limiting plate.

Further, a connection adjusting mechanism is fixedly arranged on the track frame, the free end of the connection adjusting mechanism is hung on the hanging matching structure by the box-shaped hanging piece and then abuts against the chassis, and the distance between the free end and the track frame is adjustable, so that the distance between the track frame and the chassis is finely adjusted.

Further, the connection adjustment mechanism comprises a fixing seat, an adjusting bolt and a locking nut, wherein the fixing seat is fixedly arranged on the outer side surface of the box-type hanging piece, the adjusting bolt is arranged on the fixing seat and is in threaded connection with the fixing seat, and the locking nut is sleeved on the adjusting bolt and is used for locking the adjusting position of the adjusting bolt.

Further, a track tensioning oil cylinder is arranged in the track frame, an oil filling port is arranged on the side wall of the track frame, and the oil filling port is communicated with the track tensioning oil cylinder through an oil pipe in the track frame.

Further, a plurality of jacking mechanisms are arranged on the chassis and used for jacking the chassis when the crawler frame is disassembled and assembled.

Further, the jacking mechanism comprises a jacking cylinder and a supporting seat, wherein the supporting seat is independently arranged on the ground, the end part of the jacking cylinder is inserted into the supporting seat during jacking, and the jacking cylinder is separated from the supporting seat during recovery.

Further, an expansion frame is arranged on the chassis and used for disassembling and assembling various working devices.

Further, a cleaning mechanism is further arranged on the crawler frame and used for scraping sundries adhered to the inner side of the running crawler.

Further, the cleaning mechanism includes: and scrapers provided on both sides of the track frame, the scrapers including inclined surface portions inclined with respect to a horizontal plane.

Further, a track driving mechanism is arranged in the track frame, and a movable revolving door is arranged on one side, close to the track driving mechanism, of the track frame.

Further, a fixed hanging point is arranged at the top of the box-type hanging piece, and a movable hanging point which can be unfolded or folded is arranged on a side plate, far away from one side of the box-type hanging piece, on the crawler frame.

Further, the fixed suspension points include at least two fixed suspension points spaced apart along the box hitch relative to the direction of extension of the track frame.

In one aspect of the present disclosure, a rotary drilling rig is provided that includes the aforementioned tracked chassis structure.

Therefore, according to the embodiment of the disclosure, the detachable hitching is performed through the plurality of box-shaped hitches arranged on the crawler frame and the hitching matching structure arranged on the chassis, so that the disassembling and assembling process between the chassis and the crawler frame is simplified, and the box-shaped hitches are used for bearing larger work load so as to ensure the work requirement of engineering equipment with larger tonnage.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a mounting structure according to some embodiments of the crawler chassis structure of the present disclosure;

FIG. 2 is an enlarged view of a portion of circle A of FIG. 1;

Fig. 3 is a partially exploded structural schematic illustration of some embodiments of a tracked chassis structure in accordance with the present disclosure.

It should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale. Further, the same or similar reference numerals denote the same or similar members.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: unless specifically stated otherwise, the components set forth in these embodiments should be construed as merely illustrative, and not a limitation.

The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In this disclosure, when a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device. When it is described that a particular device is connected to other devices, the particular device may be directly connected to the other devices without intervening devices, or may be directly connected to the other devices without intervening devices.

All terms (including technical or scientific terms) used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

As shown in fig. 1, which is a schematic view of a mounting structure according to some embodiments of the track-type chassis structure of the present disclosure, in combination with fig. 2 and 3, the track-type chassis structure includes: chassis 100 and track frame 200. In fig. 1, two crawler frames 200 are provided on both sides in the width direction of the chassis 100. Both track frames 200 may be coupled to the sides of the chassis 100 by a hitch. A loading structure may be provided above the chassis 100. The track frame 200 may be wrapped with a continuous plurality of track slats 210 and driven by a track drive 240 to travel or steer.

In fig. 1, a plurality of box hangers 220 are provided on track frame 200. These box hangers 220 may be distributed at multiple locations along the length of track frame 200 to share the workload. And a plurality of hooking and matching structures 110 respectively matched with the plurality of box-type hooking members 220 are arranged on the chassis 100. The box-type hanging member 220 is detachably hung on the hanging matching structure 110. The box-type hanging piece 220 has a box-type structure with excellent bending resistance, so that the box-type hanging piece can bear the work load of engineering machinery with larger tonnage (such as a rotary drilling rig and the like), and can be detachably hung by utilizing the hanging matching structure arranged on the box-type hanging piece and the chassis, so that the disassembly and assembly process between the chassis and the crawler frame can be simplified, and the work requirement of the engineering equipment with larger tonnage can be met.

Referring to fig. 3, the hitching fitting structure 110 may specifically include a pair of support plates 111 and a pin set. The box-shaped hanging piece 220 is inserted into the space surrounded by the pair of support plates 111, and the box-shaped hanging piece 220 and the pair of support plates 111 are connected and fixed through the pin shaft group. The pair of support plates 111 can restrict the box-type hitching member 220 in the length direction of the track frame 200 to avoid shaking in the direction after hitching, and in addition, the pair of support plates 111 also has the function of assisting in positioning the box-type hitching member 220 when hitching, thereby improving hitching efficiency.

The pin set in fig. 3 may specifically include a first pin 112 and a second pin 114. The first pin 112 is located above the second pin 114, such that the first pin 112 and the second pin 114 are aligned in a height direction. The first pin 112 is used to assist the box-type hanging member 220 in hanging, and the second pin 114 is used to fix the box-type hanging member 220 after hanging. The box-type hanger 220 has a half-open hole 221 and a closed hole 222. The half open hole 221, which is half open in the circumferential direction, is used for hooking the first pin 112, and the closed hole 222, which is closed in the circumferential direction, is used for the second pin 114 to pass through for connection and fixation. A baffle may be provided on at least one end of the first pin 112 to facilitate installation and removal of the first pin 112.

When the box-type hanging piece 220 is close to the hanging matching structure 110 during hanging operation, the opening part of the semi-open hole 221 can enable the first pin shaft 112 to enter from the radial direction of the opening part of the semi-open hole 221, the semi-open hole 221 is firstly used for hanging the first pin shaft 112, then the closed hole 222 is aligned, and then connection and fixation are carried out through the second pin shaft 114. For various embodiments, the number of closed apertures 222 and corresponding second pins 114 in one box-type hitch 220 may not be limited to one.

In fig. 3, the hitch engagement structure 110 may also include a pin cylinder 116. The oil cylinder may be disposed at one side of the pair of support plates 111, and is used for driving the second pin 114 to perform a plugging or unplugging operation with respect to the through holes and the closed holes 222 provided in the pair of support plates 111 according to a received local or remote control command. Thus, an operator can control the pin cylinder 116 to perform the pin inserting and pulling operation of the second pin 114 through the operation panel or the remote controller, thereby greatly reducing the workload of the operator and improving the working efficiency.

To facilitate the securement of the second pin 114 and the pin cylinder 116, the hitch engagement structure 110 may also include a transition connection 115. A transitional coupling device 115 is disposed on the chassis 100 and is fixed to the cylinder of the pin cylinder 116. The second pin 114 may be disposed in the inner cavity of the transition connection device 115, and has one end connected to the piston rod of the pin cylinder 116 and the other end aligned with the through holes formed in the pair of support plates 111. In this way, when the piston rod of the pin cylinder 116 stretches and contracts relative to the cylinder barrel, the second pin 114 can be driven to stretch and contract relative to the transitional connecting device 115 and the through holes arranged on the pair of support plates 111, so that pin inserting and pulling operations are realized. The transitional coupling device 115 may be in the form of a sleeve, and flanges are provided at both ends of the sleeve, and are respectively coupled with the flanges at the cylinder ends of the pin cylinder 116 and the pair of support plates 111 by means of coupling members (e.g., bolts, etc.).

Referring to fig. 2 and 3, a limiting plate 130 may be further provided on the chassis 100. The limiting plate 130 is located above the hooking matching structure 110. The box-type hanger 220 supports the box-type hanger 220 in a horizontal direction in a state of being hung to the hanging fitting structure 110 by the limiting plate 130. That is, the limiting plate 130 realizes the support of the box-shaped hitching member 220 by its plate thickness section. The support structure can support larger load, reduce shearing force born by the pin shaft group, prolong the service life of the pin shaft group and ensure that the connection between the chassis 100 and the crawler frame 200 is more reliable. In order to further improve the supporting ability of the limiting plate 130, a plurality of reinforcing ribs 131 may be provided on the surface of the limiting plate 130. The reinforcement rib 131 may be disposed in a direction perpendicular to the length direction of the track frame.

In order to facilitate fine adjustment between the chassis 100 and the track frame 200 when the track frame 200 is connected, a connection adjustment mechanism may be fixedly disposed on the track frame 200. The free end of the connection adjusting mechanism is hung on the hanging matching structure 110 by the box-shaped hanging piece 220 and then abuts against the chassis 100, and the distance between the free end and the crawler frame 200 is adjustable, so that the distance between the crawler frame 200 and the chassis 100 can be finely adjusted, and the second pin 114 can be accurately positioned before being inserted into the closed hole 222.

In fig. 3, the connection adjustment mechanism may specifically include a fixing seat 261, an adjustment bolt 262, and a lock nut. The fixing base 261 is fixedly disposed on an outer side surface of the box-type hooking member 220. The adjusting bolt 262 is disposed on the fixed seat 261 and is in threaded connection with the fixed seat 261. The operator twists the adjusting bolt 262 by a tool so that the length of the screw portion between the head of the adjusting bolt 262 and the fixing seat 261 can be adjusted. While the head portion by abutting against the side wall of the chassis 100, the length of the screw portion can be used to ensure the spacing between the track frame 200 and the chassis 100. The locking nut is sleeved on the adjusting bolt 262 and used for locking the adjusting position of the adjusting bolt 262.

The fixing seat 261 may be provided at a surface of at least one side of the box hanging member 220. The surface of box hitch 220 allows adjustment bolt 262 to be positioned closer to chassis 100 than at other locations on track frame 200, so that too slender adjustment bolt 262 is not used, thereby preventing the problem of possible bending of its threaded rod when it is compressed. The fixing seat 261 and the adjusting bolt 262 are disposed at a lower level than the half-open hole 221, preferably at a level with the center line of the closed hole 222.

Referring to FIG. 1, in some embodiments, a track tensioning cylinder may be disposed within the track frame 200, through which tensioning of the shoe 210 on the track frame 200 may be accomplished. And an oil filling port 270 can be arranged on the side wall of the track frame 200, and the oil filling port 270 is communicated with the track tensioning cylinder through an oil pipe in the track frame 200. Thus, when the looseness of the track sheet 210 needs to be adjusted through the track tensioning cylinder, an external oil path can be connected with the oil filling port 270, and the complicated operation of introducing the oil pipe into the track frame 200 is omitted.

When the chassis 100 and the track frame 200 are mounted or dismounted, the chassis 100 can be lifted, and the track frame 200 can be lifted after the track frame 200 is mounted or dismounted. Accordingly, a plurality of lifting mechanisms may be provided on the chassis 100, and the chassis 100 may be lifted up by the lifting mechanisms when the track frame 200 is assembled and disassembled. Referring to fig. 1, the jacking mechanism 140 may specifically include a jacking cylinder 141 and a support base 142. The support base 142 is provided on the ground independently of the jacking cylinder 141, and the lower end portion of the jacking cylinder 141 is inserted into the support base 142 when performing the jacking operation. This causes the chassis 100 to be lifted upward relative to the ground as the lift cylinder 141 is extended. When the lifting cylinder 141 needs to be recovered, the lower end of the lifting cylinder 141 is separated from the supporting seat 142 to realize recovery along with the shortening of the lifting cylinder 141. Compared with the mode of installing or detaching the chassis 100 and the crawler frame 200 after the chassis 100 and the crawler frame 200 are respectively lifted by a plurality of cranes, the lifting mechanism can save the use of the cranes, simplify the installation and detachment processes, and reduce the installation and detachment difficulty. In addition, the jacking mechanism can also be used for maintenance operation or chassis jacking operation before and after transportation.

More than four jacking mechanisms can be arranged on the chassis 100 to realize stable jacking effect. The lifting positions of the lifting mechanisms can be adjusted as required. An extension bracket 120 may be further provided on the chassis 100 for assembling and disassembling accessories of various working devices, so that the modification cost can be effectively reduced. The jacking mechanism 140 may be detachably mounted on the expansion bracket 120.

In performing the lifting operation of the track frame 200, fixed lifting points 251, 252 may be provided at the top of the box hitch 220, the fixed lifting points 251, 252 comprising at least two fixed lifting points spaced apart along the direction of extension of the box hitch 220 with respect to the track frame 200. The fixed lifting points at different positions can realize different lifting point intervals so as to meet the lifting operation of the crawler frame under different states. For example, when lifting a track frame without a track attached thereto, a fixed suspension point 252 on the box hitch 220 closer to the side of the track frame body may be used because of the relatively narrow width of the track frame. When the crawler frame on which the crawler is mounted is lifted, the crawler occupies a wide range, so that the fixed hanging point 251 on the box-type hitching member 220, which is further away from one side of the crawler frame body, can be used.

A movable hanging point 253 which can be unfolded or folded is arranged on a side plate of the crawler frame 200, which is far away from the side of the box-type hanging piece 220. The movable hanging point 253 can be retracted to a position close to the track frame 200 when not in use, and can be pulled out of the track frame 200 relative to the track frame 200 when in use, so as to realize larger distance between the hanging points and avoid interference between the hanging rope and the track or the track frame.

Considering that the crawler belt may be involved with many foreign matters while running, the running of the crawler belt may be adversely affected when the foreign matters are excessively accumulated on the crawler belt. To overcome this problem, referring to fig. 1, in some embodiments, a cleaning mechanism may also be provided on track frame 200 for scraping debris adhered to the inside of the running track. Specifically, the cleaning mechanism may include scrapers 230 disposed at both sides of the track frame 200, the scrapers 230 including a slope portion inclined with respect to a horizontal plane. When the construction vehicle travels, the track rotates with respect to the track frame 200, and impurities inside the track are scraped by the scraper 230 and discharged out of the width range of the track through the slope portion, thus effectively eliminating the adverse effect of impurities accumulated on the track running.

In addition, in order to facilitate maintenance of the track driving mechanism 240 provided inside the track frame 200, it is preferable that a movable swing door 241 is provided on the track frame 200 at a side close to the track driving mechanism 240. Thus, an operator may perform maintenance on the track drive 240 by opening the swing door, and after maintenance, may close the swing door.

The crawler-type chassis structure embodiment can be suitable for various engineering machinery, and is particularly suitable for a large-tonnage rotary drilling rig. The present disclosure thus also provides a rotary drilling rig including any one of the embodiments of the crawler chassis structure described above.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (16)

1. A crawler chassis structure comprising: a chassis (100) and a crawler frame (200), wherein a plurality of box-shaped hanging pieces (220) are arranged on the crawler frame (200), a plurality of hanging matching structures (110) which are respectively matched with the box-shaped hanging pieces (220) are arranged on the chassis (100), and the box-shaped hanging pieces (220) are detachably hung on the hanging matching structures (110);

A limiting plate (130) is further arranged on the chassis (100), the limiting plate (130) is located above the hanging matching structure (110), and the box-shaped hanging piece (220) supports the box-shaped hanging piece (220) along the horizontal direction in a state of being hung to the hanging matching structure (110);

The crawler frame (200) is further fixedly provided with a connection adjusting mechanism, the free end of the connection adjusting mechanism is hung on the box-shaped hanging piece (220) and is propped against the chassis (100) after being hung on the matching structure (110), the distance between the free end and the crawler frame (200) is adjustable so as to finely adjust the distance between the crawler frame (200) and the chassis (100), the connection adjusting mechanism comprises a fixing seat (261), an adjusting bolt (262) and a locking nut, the fixing seat (261) is fixedly arranged on the outer side surface of the box-shaped hanging piece (220), the adjusting bolt (262) is arranged on the fixing seat (261) and is in threaded connection with the fixing seat (261), and the locking nut is sleeved on the adjusting bolt (262) and is used for locking the adjusting position of the adjusting bolt (262).

2. The crawler-type chassis structure of claim 1, wherein the hitch engagement structure (110) comprises: the box-type hanging pieces (220) are inserted into the space surrounded by the paired support plates (111), and the box-type hanging pieces (220) are connected and fixed with the paired support plates (111) through the pin shaft groups.

3. The crawler chassis structure of claim 2, wherein the set of pins comprises: the box-shaped hanging piece (220) is provided with a semi-open hole (221) used for being hung on the first pin shaft (112) and a closed hole (222) used for the second pin shaft (114) to pass through.

4. A crawler chassis structure according to claim 3 wherein said hitch engagement structure (110) further comprises: the pin shaft oil cylinders (116) are arranged on one sides of the pair of support plates (111) and used for driving the second pin shafts (114) to execute pin inserting or pin pulling operations relative to through holes arranged on the pair of support plates (111) and the closed holes (222) according to received local or remote control instructions.

5. The crawler-type chassis structure of claim 4, wherein the hitch engagement structure (110) further comprises: the transition connecting device (115), the transition connecting device (115) is arranged on the chassis (100) and is fixed with a cylinder barrel of the pin shaft oil cylinder (116), the second pin shaft (114) is arranged in an inner cavity of the transition connecting device (115), one end of the second pin shaft is connected with a piston rod of the pin shaft oil cylinder (116), and the other end of the second pin shaft is aligned with a through hole arranged on the pair of support plates (111).

6. Crawler chassis structure according to claim 1, wherein a plurality of reinforcement ribs (131) are further provided on the surface of the limiting plate (130).

7. The crawler chassis structure according to claim 1, wherein a crawler tensioning cylinder is arranged in the crawler frame (200), an oil filling port (270) is arranged on the side wall of the crawler frame (200), and the oil filling port (270) is communicated with the crawler tensioning cylinder through an oil pipe in the crawler frame (200).

8. The crawler chassis structure according to claim 1, wherein a plurality of lifting mechanisms are provided on the chassis (100) for lifting the chassis (100) when the crawler frame (200) is detached.

9. The crawler chassis structure according to claim 8, wherein the lifting mechanism (140) includes a lifting cylinder (141) and a support base (142), the support base (142) being independently disposed on the ground, and an end of the lifting cylinder (141) being configured to be inserted into the support base (142) upon lifting and to be disengaged from the support base (142) upon recovery.

10. Crawler chassis structure according to claim 1, characterized in that an extension frame (120) is provided on the chassis (100) for dismounting various working devices.

11. The crawler chassis structure according to claim 1, wherein a cleaning mechanism is further provided on the crawler frame (200) for scraping off foreign matters adhering to the inner side of the running crawler.

12. The track chassis structure of claim 11, wherein the cleaning mechanism comprises: and scrapers (230) provided at both sides of the track frame (200), the scrapers (230) including a slope portion inclined with respect to a horizontal plane.

13. The crawler chassis structure according to claim 1, wherein a crawler driving mechanism (240) is provided in the crawler frame (200), and a movable revolving door (241) is provided on a side of the crawler frame (200) close to the crawler driving mechanism (240).

14. The crawler chassis structure according to claim 1, wherein a fixed hanging point (251, 252) is provided at the top of the box-type hitching member (220), and a movable hanging point (253) which can be unfolded or folded is provided on a side plate of the crawler frame (200) on a side away from the box-type hitching member (220).

15. The crawler chassis structure of claim 14, wherein the stationary suspension points (251, 252) comprise at least two stationary suspension points arranged at intervals along the box hitch (220) with respect to the direction of extension of the crawler frame (200).

16. A rotary drilling rig comprising a crawler chassis structure as claimed in any one of claims 1 to 15.