Telescopic supporting device of mast of rotary drilling rig and telescopic supporting method of telescopic supporting device

Abstract

The invention discloses a telescopic supporting device for a mast of a rotary drilling rig and a telescopic supporting method thereof.The telescopic supporting device comprises a base, a telescopic base slidably connected to the base and a telescopic assembly arranged between the base and the telescopic base, two sleeves are symmetrically arranged at the top of the base, and stand columns are arranged in the sleeves in a sleeved mode; the top of the stand column is fixedly connected to the bottom of the telescopic base, a first fixing hole is formed in the upper portion of the side wall of the stand column, a second fixing hole is formed in the lower portion of the stand column, a limiting hole matched with the first fixing hole and the second fixing hole is formed in the side wall of the sleeve, and the second fixing hole and the limiting hole are connected through a fastener. A slot matched with the avoiding hole is formed in the bottom of the second storage bin; adjustment of the mast supporting height can be completed within a short time, the telescopic base descends to a low position and the height of the whole machine is reduced to be below the transportation height limit during rod-carrying transportation, the telescopic base ascends to a high position during non-rod-carrying transportation, and the folding mast is prevented from touching the ground and interfering.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field, and particularly relates to a telescopic supporting device for a mast of a rotary drilling rig and a telescopic supporting method thereof. BACKGROUND

[0002] As a high-efficiency pile foundation construction device, the rotary drilling rig is widely used in the fields of construction and transportation. In the transportation process of a small rotary drilling rig, the weight and height of the whole machine are usually in the critical range of over-limit, so that the transportation cost is saved by generally adopting the mode of transporting with a rod, that is, the whole machine is transported with a drill rod, instead of transporting the drill rod and the main machine separately as in the case of a large rotary drilling rig. However, when the machine is transported with the rod, the existence of the drill rod will cause the height of the whole machine to be too high, so that in the prior art, the avoidance space for the mast and the drill rod is reserved in the middle of the platform and the counterweight of the rotary drilling rig, and the mast support frame is arranged at the position below the counterweight, so as to reduce the height of the whole machine to below the height limit for transportation.

[0003] When the rotary drilling rig needs to be switched between the modes of transporting with the rod and transporting without the rod, the following problem occurs: when the transportation length is strictly limited and the mast needs to be folded and turned down to shorten the transportation length, if the height of the mast support frame is low, the height of the folded mast placed downward will be too low, which will cause the folded mast to interfere with the ground. In order to solve this interference problem, the prior art usually additionally arranges a mast support frame above the counterweight, and when the rotary drilling rig is transported with the rod, the support frame above the counterweight is disassembled, so that the mast can be placed downward to the support frame below the counterweight. When the rotary drilling rig is transported without the rod and the mast needs to be folded and turned down, the support frame above the counterweight is reinstalled to raise the height of the mast, so as to prevent the folded mast from interfering with the ground.

[0004] This existing solution has obvious defects: when the two modes of transportation are switched, the mast support frame above the counterweight needs to be repeatedly disassembled and installed, which not only increases the labor intensity of the operators, but also prolongs the preparation time before transportation and reduces the work efficiency, and cannot meet the efficient and convenient transportation demand. In summary, there is an urgent need for a telescopic supporting device for a mast of a rotary drilling rig and a telescopic supporting method thereof. SUMMARY

[0005] In order to solve the above-mentioned technical problems in the prior art, the present application provides a telescopic supporting device for a mast of a rotary drilling rig and a telescopic supporting method thereof.

[0006] On the one hand, the present invention provides a telescopic support device for a rotary drilling rig mast, the rotary drilling rig comprising a main body, a counterweight block arranged on one side of the main body, a first storage bin arranged in the middle of the main body, a second storage bin arranged in the middle of the counterweight block, a mast, a drill rod arranged above the mast, and a power head arranged in one end of the drill rod, the mast being arranged in the first storage bin and the second storage bin, a folding mast being provided at one end of the mast, the folding mast being located below the power head, the telescopic support device being arranged between the bottom of the second storage bin and the mast, the telescopic support device comprising a base fixedly arranged at the bottom of the second storage bin, a telescopic seat slidably connected to the base, and a telescopic assembly arranged between the base and the telescopic seat, wherein:

[0007] Two sleeves are symmetrically provided on the top of the base, and a column is sleeved in the sleeve. The top of the column is fixedly connected to the bottom of the telescopic seat. A first fixing hole is provided on the upper part of the side wall of the column, and a second fixing hole is provided on the lower part. A limiting hole matching the first fixing hole and the second fixing hole is provided on the side wall of the sleeve. The second fixing hole is connected to the limiting hole by a fastener. An avoidance hole connected to the sleeve is provided on the base, and a slot matching the avoidance hole is provided at the bottom of the second storage bin.

[0008] Furthermore, in the above-mentioned telescopic support device for the mast of a rotary drilling rig, a first mounting plate is provided between the two columns, a second mounting plate is provided between the two sleeves, and one end of the telescopic assembly is connected to the first mounting plate through a first mounting shaft, and the other end is connected to the second mounting plate through a second mounting shaft.

[0009] As a specific embodiment, in the above-mentioned telescopic support device for the mast of a rotary drilling rig, a plurality of mounting holes are provided on the base, and the base is fixed to the bottom of the second storage bin through the mounting holes and the fasteners.

[0010] As a specific embodiment, in the above-mentioned telescopic support device for the mast of a rotary drilling rig, limiting plates matching the mast are respectively provided on both sides of the top of the telescopic seat.

[0011] As a specific embodiment, in the above-mentioned telescopic support device for the mast of a rotary drilling rig, a plurality of buffer pads are fixedly provided at the middle portion of the top end of the telescopic seat.

[0012] As a specific embodiment, in the above-mentioned telescopic support device for the mast of a rotary drilling rig, reinforcing ribs are provided between the sleeve and the base, and between the column and the connecting seat.

[0013] As a specific embodiment, in the above-mentioned telescopic support device for the mast of a rotary drilling rig, the telescopic assembly is a multi-stage oil cylinder.

[0014] The telescopic support method for a rotary drilling rig mast provided by the present invention comprises:

[0015] Step 1: Fix the mast telescopic device to the bottom of the second storage bin, then remove the fastener between the second fixing hole and the limiting hole, contract the telescopic assembly, and slide the column into the sleeve. After the column passes through the avoidance hole, it slides into the slot until the first fixing hole is aligned with the limiting hole and stops sliding. The first fixing hole and the limiting hole are fixed by the fastener. Finally, flip the mast downward until the bottom of the mast abuts against the top of the telescopic seat. At this time, the rotary drilling rig is in the transport state with the rod;

[0016] Step 2: In the transport state with a rod, the fastener between the first fixing hole and the limiting hole is removed, and the telescopic assembly is extended, so that the column slides from the slot through the avoidance hole into the sleeve until the second fixing hole is aligned with the limiting hole and stops sliding, and the second fixing hole and the limiting hole are fixed by the fastener, and finally the mast is flipped down until the bottom of the mast rests against the top of the telescopic seat, and then the folding mast is flipped down and folded. At this time, the rotary drilling rig is in a non-rod transport state.

[0017] On the other hand, the present invention further provides a rotary drilling rig, which includes the above-mentioned telescopic support device for the rotary drilling rig mast.

[0018] The telescopic support device and telescopic support method of the rotary drilling rig mast of the present invention have the following advantages and positive effects:

[0019] (1) The present invention is different from the tedious operation of repeatedly disassembling and installing additional support frames in the prior art. The telescopic seat is driven to rise and fall by the telescopic assembly, and the first fixing hole, the second fixing hole and the sleeve limit hole on the column are quickly positioned and locked. The mast support height can be adjusted in a short time by simply disassembling and assembling fasteners. When transporting with the mast, the telescopic seat is lowered to a low position, lowering the height of the entire machine to below the transport height limit. When transporting without the mast, the telescopic seat is raised to a high position to avoid interference caused by the folded mast touching the ground, completely eliminating the repetitive labor of the traditional solution, and greatly improving the efficiency of pre-transportation preparations.

[0020] (2) The limit plate and buffer pad set at the top of the telescopic seat in the present invention can effectively limit the lateral displacement of the mast and absorb impact vibration, thereby improving transportation safety and reducing the risk of equipment damage. By setting the reinforcing ribs, the overall rigidity is enhanced, and the impact resistance is greatly improved, so that it can adapt well to complex transportation conditions. The support height can be accurately adjusted through the telescopic assembly to ensure that the mast is stable and reliable in different modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only used to further understand the embodiments of the present invention and constitute part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of a telescopic support device for a rotary drilling rig mast of the present invention;

[0023] Figure 2 2. It is a schematic diagram of a state in which the telescopic assembly of the telescopic support device for the mast of a rotary drilling rig of the present invention is retracted;

[0024] Figure 3 It is a structural schematic diagram of a sleeve in a telescopic support device for a rotary drilling rig mast of the present invention;

[0025] Figure 4 It is a structural schematic diagram of a base in a telescopic support device for a rotary drilling rig mast of the present invention;

[0026] Figure 5 It is a schematic diagram of the telescopic support device for the mast of a rotary drilling rig of the present invention in a transport state with the mast;

[0027] Figure 6 Schematic diagram of the telescopic support device for the mast of a rotary drilling rig according to the present invention in a transport state without the mast;

[0028] Figure 7 It is a schematic diagram of the position of the slots in the telescopic support device for the mast of a rotary drilling rig of the present invention.

[0029] Description of reference numerals:

[0030] 1-main body, 11-first storage compartment, 2-counterweight, 21-slot, 22-second storage compartment, 3-telescopic support device, 31-base, 311-mounting hole, 32-telescopic seat, 33-telescopic assembly, 34-sleeve, 341-second mounting plate, 342-second mounting axis, 35-column, 351-first fixing hole, 352-second fixing hole, 353-first mounting plate, 354-first mounting axis, 36-buffer pad, 37-limiting plate, 38-avoidance hole, 39-limiting hole, 4-mast, 41-folding mast, 5-drill pipe, 6-power head, 7-reinforcement rib plate, 8-fastener. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1 to 7 As shown, the present invention provides a telescopic support device for a rotary drilling rig mast and a telescopic support method thereof.

[0033] In one aspect, the present application discloses a telescopic support device for a rotary drilling rig mast, the rotary drilling rig mast comprising a main body 1, a counterweight 2 arranged on one side of the main body 1, a first storage compartment 11 arranged in the middle of the main body 1, a second storage compartment 22 arranged in the middle of the counterweight 2, a mast 4, a drill rod 5 arranged above the mast 4, and a power head 6 arranged in one end of the drill rod 5, the mast 4 being arranged in the first storage compartment 11 and the second storage compartment 22, one end of the mast 4 being provided with a folding mast 41, the folding mast 41 being located below the power head 6, the telescopic support device 3 being arranged between the bottom of the second storage compartment 22 and the mast 4, of course, the telescopic support device 3 can also be arranged between the bottom of the first storage compartment 11 and the mast 4 according to actual conditions, the telescopic support device 3 comprising a base 31 fixedly arranged at the bottom of the second storage compartment 22, a telescopic seat 32 slidably connected to the base 31, and a telescopic assembly 33 arranged between the base 31 and the telescopic seat 32, wherein two sleeves 34 are symmetrically arranged on the top of the base 31, a stand 35 is sleeved in the sleeve 34, the top of the stand 35 is fixedly connected to the bottom of the telescopic seat 32, a first fixing hole 351 is formed in the upper part of the side wall of the stand 35, a second fixing hole 352 is formed in the lower part of the side wall of the stand 35, a limiting hole 39 matched with the first fixing hole 351 and the second fixing hole 352 is formed in the side wall of the sleeve 34, the second fixing hole 352 and the limiting hole 39 are connected by a fastener 8, more specifically, the fastener 8 is a fastening bolt, an avoiding hole 38 communicating with the sleeve 34 is formed in the base 31, an insertion slot 21 matched with the avoiding hole 38 is formed in the bottom of the second storage compartment 22, and the stand 35 can slide into the insertion slot 21 through the avoiding hole 38, so as to realize the up-and-down sliding of the stand 35 in the sleeve 34, and further drive the telescopic seat 32 to ascend and descend.

[0034] Further, in the telescopic support device for a rotary drilling rig mast, a first mounting plate 353 is arranged between the two stands 35, a second mounting plate 341 is arranged between the two sleeves 34, one end of the telescopic assembly 33 is connected to the first mounting plate 353 through a first mounting shaft 354, and the other end of the telescopic assembly 33 is connected to the second mounting plate 341 through a second mounting shaft 342.

[0035] As a specific embodiment, in the telescopic support device for a rotary drilling rig mast, a plurality of mounting holes 311 are formed in the base 31, the base 31 is fixed to the bottom of the second storage compartment 22 through the mounting holes 311 and the fasteners 8, of course, the base 31 can also be connected to the bottom of the second storage compartment 22 through welding or other connection methods, as long as it is firm and stable.

[0036] As a specific embodiment, in the telescopic support device for the mast of the rotary drilling rig, the top end of the telescopic seat 32 is provided with a limiting plate 37 matched with the mast 4 on both sides, which is used for limiting the mast 4, and when the mast 4 abuts against the top of the telescopic seat 32, the limiting plate 37 is just supported at the preset position of the bottom of the mast 4, so that the mast 4 is prevented from shaking during transportation, and the safety during transportation is ensured.

[0037] As a specific embodiment, in the telescopic support device for the mast of the rotary drilling rig, a plurality of buffer pads 36 are fixedly arranged at the middle of the top end of the telescopic seat 32, so that the buffer pads 36 can be made of elastic materials such as rubber, and when the bottom of the mast 4 abuts against the top of the telescopic seat 32, the buffer pads 36 can absorb impact energy, reducing the impact and vibration between the mast 4 and the telescopic seat 32.

[0038] As a specific embodiment, in the telescopic support device for the mast of the rotary drilling rig, reinforcing rib plates 7 are arranged between the sleeve 34 and the base 31 and between the stand 35 and the connecting seat, so that the strength and stability of the device are enhanced, and the service life of the device is improved.

[0039] As a specific embodiment, in the telescopic support device for the mast of the rotary drilling rig, the telescopic assembly 33 is a multi-stage oil cylinder, so that stable power can be provided to realize the stable lifting of the telescopic seat 32.

[0040] The telescopic support method for the rotary drilling rig is implemented by using the telescopic support device, and specifically includes the following steps.

[0041] Step 1: Fix the telescopic support device 3 at the bottom of the second storage bin 22, ensure that the device is installed in place, then disassemble the fastener 8 between the second fixing hole 352 and the limiting hole 39, so that the stand 35 can freely slide in the sleeve 34, control the telescopic assembly 33 to contract, when the telescopic assembly 33 contracts, the distance between the first mounting plate 353 and the second mounting plate 341 is shortened, so that the stand 35 slides into the sleeve 34, and in the process of sliding downward, the stand 35 slides into the insertion slot 21 after passing through the avoiding hole 38, and stops sliding after the first fixing hole 351 is aligned with the limiting hole 39, and then the stand 35 is fixed at the current position by the fastener 8, so that the telescopic seat 32 is at a lower position, and finally the mast 4 is turned down until the bottom of the mast 4 abuts against the top of the telescopic seat 32, at this time, the rotary drilling rig is in a state of transporting with the mast, and since the telescopic seat 32 is at a lower position, the height of the whole machine is reduced, meeting the height limit requirement of transporting with the mast.

[0042] Step 2: When the first fixed hole 351 and the limiting hole 39 are detached, the column 35 can slide in the sleeve 34 again, the telescopic assembly 33 is controlled to extend, the distance between the first mounting plate 353 and the second mounting plate 341 is increased, the column 35 slides in the sleeve 34 after passing through the avoidance hole 38 from the slot 21, and stops sliding until the second fixed hole 352 is aligned with the limiting hole 39, and then is fixed by the fastener 8, at this time, the telescopic seat 32 is at a higher position, finally, the mast 4 is turned down to abut against the top of the telescopic seat 32, and the folding mast 41 is turned down to fold, at this time, the rotary drilling rig is in a non-pole transportation state, the height of the mast 4 is sufficient, the folding mast 41 does not interfere with the ground, and the length limitation requirement of the non-pole transportation is met.

[0043] In another aspect, the application also provides a rotary drilling rig, which comprises the telescopic supporting device for the mast of the rotary drilling rig.

[0044] In summary, compared with the prior art, the telescopic supporting device for the mast of the rotary drilling rig and the telescopic supporting method have the following advantages and positive effects:

[0045] (1) The application is different from the cumbersome operation of repeatedly disassembling and installing an additional supporting frame in the prior art, the telescopic seat 32 is driven to ascend and descend by the telescopic assembly 33, the first fixed hole 351 and the second fixed hole 352 on the column 35 are quickly positioned and locked with the limiting hole 39 of the sleeve 34, only the fastener 8 needs to be simply disassembled and assembled, and the supporting height of the mast 4 can be adjusted in a short time, when the pole transportation is performed, the telescopic seat 32 is lowered to a low position, the height of the whole machine is reduced to below the transportation height limit, when the non-pole transportation is performed, the telescopic seat 32 is raised to a high position, the folding mast 41 is prevented from interfering with the ground, the repetitive labor of the traditional scheme is completely eliminated, and the preparation efficiency before transportation is greatly improved.

[0046] (2) In the application, the limiting plate 37 and the buffer pad 36 arranged at the top end of the telescopic seat 32 can effectively limit the transverse displacement of the mast 4 and absorb impact vibration, improve transportation safety, and reduce the risk of equipment damage, and the reinforcing rib plate 7 is arranged to enhance the overall rigidity and greatly improve the impact resistance, so that the rotary drilling rig can well adapt to complex transportation road conditions, and the telescopic assembly 33 can realize precise adjustment of the supporting height, and ensure that the mast 4 is stable and reliable in different modes.

[0047] It should be noted that, in this article, unless otherwise specified and limited, the term "connection" or its synonyms should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements or interaction relationship of two elements, and those skilled in the art can understand the specific meaning of the above-mentioned term in the present application according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. At the same time, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or equipment. In addition, "front", "back", "left", "right", "up", "down" in this article are referred to the placement state shown in the drawings.

[0048] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A telescopic support device for a rotary drilling rig mast, the rotary drilling rig comprising a main body, a counterweight block arranged on one side of the main body, a first storage bin arranged in the middle of the main body, a second storage bin arranged in the middle of the counterweight block, a mast, a drill rod arranged above the mast, and a power head arranged in one end of the drill rod, the mast being arranged in the first storage bin and the second storage bin, a folding mast being arranged at one end of the mast, the folding mast being located below the power head, the telescopic support device being arranged between the bottom of the second storage bin and the mast, and characterized in that: The telescopic support device includes a base fixedly arranged at the bottom of the second storage bin, a telescopic seat slidably connected to the base, and a telescopic assembly arranged between the base and the telescopic seat, wherein: Two sleeves are symmetrically provided on the top of the base, and a column is sleeved in the sleeve. The top of the column is fixedly connected to the bottom of the telescopic seat. A first fixing hole is provided on the upper part of the side wall of the column, and a second fixing hole is provided on the lower part. A limiting hole matching the first fixing hole and the second fixing hole is provided on the side wall of the sleeve. The second fixing hole is connected to the limiting hole by a fastener. An avoidance hole connected to the sleeve is provided on the base, and a slot matching the avoidance hole is provided at the bottom of the second storage bin.

2. The telescopic support device for a rotary drilling rig mast according to claim 1, characterized in that: A first mounting plate is provided between the two columns, a second mounting plate is provided between the two sleeves, one end of the telescopic assembly is connected to the first mounting plate through a first mounting shaft, and the other end is connected to the second mounting plate through a second mounting shaft.

3. The telescopic support device for a rotary drilling rig mast according to claim 1, characterized in that: The base is provided with a plurality of mounting holes, and the base is fixed to the bottom of the second storage bin through the mounting holes and the fasteners.

4. The telescopic support device for a rotary drilling rig mast according to claim 1, characterized in that: Limiting plates matching the mast are respectively provided on both sides of the top of the telescopic seat.

5. The telescopic support device for a rotary drilling rig mast according to claim 1, characterized in that: A plurality of buffer pads are fixedly arranged at the middle portion of the top end of the telescopic seat.

6. The telescopic support device for a rotary drilling rig mast according to claim 1, characterized in that: Reinforcement ribs are provided between the sleeve and the base, and between the column and the connecting seat.

7. The telescopic support device for a rotary drilling rig mast according to claim 1, characterized in that: The telescopic component is a multi-stage oil cylinder.

8. A telescopic support method for a rotary drilling rig mast, the telescopic support method being implemented using the telescopic support device according to any one of claims 1 to 7, comprising: Step 1: Fix the mast telescopic device to the bottom of the second storage bin, then remove the fastener between the second fixing hole and the limiting hole, contract the telescopic assembly, and slide the column into the sleeve. After the column passes through the avoidance hole, it slides into the slot until the first fixing hole is aligned with the limiting hole and stops sliding. The first fixing hole and the limiting hole are fixed by the fastener. Finally, flip the mast downward until the bottom of the mast abuts against the top of the telescopic seat. At this time, the rotary drilling rig is in the transport state with the rod; Step 2: In the transport state with a rod, the fastener between the first fixing hole and the limiting hole is removed, and the telescopic assembly is extended, so that the column slides from the slot through the avoidance hole into the sleeve until the second fixing hole is aligned with the limiting hole and stops sliding, and the second fixing hole and the limiting hole are fixed by the fastener, and finally the mast is flipped down until the bottom of the mast rests on the top of the telescopic seat, and then the folding mast is flipped down and folded. At this time, the rotary drilling rig is in a non-rod transport state.

9. A rotary drilling rig, characterized in that: The rotary drilling rig comprises the telescopic support device according to any one of claims 1 to 7.

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