Chain combined counterweight device for rotary drilling rig

Abstract

The utility model discloses a chain combination counterweight device for a rotary drilling rig, which comprises a first counterweight block fixed at the top of a platform through a fastening bolt, a second counterweight block arranged above the first counterweight block, and a plurality of third counterweight blocks arranged between the first counterweight block and the second counterweight block, positioning grooves are formed in the upper portions of the first balancing weight and the third balancing weights, positioning blocks matched with the positioning grooves are arranged at the bottoms of the second balancing weight and the third balancing weights, a plurality of connecting pipes are arranged among the first balancing weight, the second balancing weight and the third balancing weights in a penetrating mode, chains are arranged in the connecting pipes, chain seats are arranged at the tops of the connecting pipes, and the chains are connected with the chain seats. An adjusting assembly is arranged at the bottom; compared with a traditional overall filling type balance weight, due to the fact that each balance weight block is small in size, the filling degree is better, weight distribution is more uniform, vehicle-mounted transportation is more convenient, all the balance weight blocks are fixed through chains, stress is more uniform, and mounting and dismounting are more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary drilling rigs, and particularly relates to a chain combination counterweight device for a rotary drilling rig. Background Art

[0002] A rotary drilling rig is a construction machinery suitable for hole forming operations in building foundation projects, and is widely used in foundation construction projects such as municipal construction, highway bridges, and high-rise buildings. By cooperating with different drilling tools, it is suitable for dry (short helix), or wet (rotary bucket) and rock formation (core drill) hole forming operations.

[0003] In the prior art, the counterweight of a rotary drilling rig generally adopts the method of filling fillers inside a large housing. This method greatly wastes the layout space of the whole machine, and due to the large overall volume of this integral filling type counterweight, there are disadvantages such as poor filling degree, uneven overall weight distribution, and inconvenience in transporting with the vehicle. Especially when designing some large models, the disadvantages of this integral filling type counterweight are more obvious. Moreover, when the rotary drilling rig is working, when using a combined counterweight, sometimes due to the vibration and impact generated during the working process of the rotary drilling rig, the connection between each counterweight block becomes loose, posing a certain safety hazard. In summary, there is an urgent need for a chain combination counterweight device for a rotary drilling rig. Summary of the Utility Model

[0004] To solve some or all of the above technical problems existing in the prior art, the utility model provides a chain combination counterweight device for a rotary drilling rig. The chain combination counterweight device is arranged above a platform. The chain combination counterweight device for a rotary drilling rig includes a first counterweight block fixed to the top of the platform through fastening bolts, a second counterweight block arranged above the first counterweight block, and a plurality of third counterweight blocks arranged between the first counterweight block and the second counterweight block, wherein:

[0005] Positioning grooves are formed above the first counterweight block and the plurality of third counterweight blocks. The positioning grooves are symmetrically distributed along the central axis of the length direction of the first counterweight block. Positioning blocks matching the positioning grooves are arranged at the bottoms of the second counterweight block and the plurality of third counterweight blocks. The positioning blocks are arranged in the positioning grooves. A plurality of connecting pipes penetrate through the first counterweight block, the second counterweight block, and the third counterweight blocks. The plurality of connecting pipes are symmetrically distributed along the central axis of the length direction of the first counterweight block. Chains are arranged inside the connecting pipes. Chain seats are arranged at the tops of the connecting pipes, and adjusting components are arranged at the bottoms. Fixed grooves matching the chains are arranged on the chain seats;

[0006] The adjusting assembly includes an adjusting backing plate arranged below the connecting pipe. A chain passing hole matching the chain is formed in the center of the adjusting backing plate. A plurality of adjusting holes are evenly spaced in the circumferential direction along the axis of the chain passing hole. Adjusting bolts are arranged in the adjusting holes. A baffle is arranged at the bottom of the adjusting backing plate. A clamping groove matching the chain is formed in the baffle. A limiting bolt is arranged on the clamping groove. One end of the chain passes through the chain seat, and the other end passes through the chain passing hole and is fixed to the limiting bolt through the baffle.

[0007] Further, in the above-mentioned chain combination counterweight device for a rotary drilling rig, a fixing hole is formed in the first counterweight block. A connecting sleeve is press-fitted in the fixing hole. Internal threads matching the fastening bolts are formed on the inner wall of the connecting sleeve. The fastening bolts are threadedly connected to the connecting sleeve.

[0008] As a specific implementation manner, in the above-mentioned chain combination counterweight device for a rotary drilling rig, hoisting threaded holes are arranged at the tops of the first counterweight block, the second counterweight block, and the third counterweight block. Hoisting rings are threadedly connected in the hoisting threaded holes.

[0009] As a specific implementation manner, in the above-mentioned chain combination counterweight device for a rotary drilling rig, a washer is arranged between the fastening bolt and the fixing hole.

[0010] As a specific implementation manner, in the above-mentioned chain combination counterweight device for a rotary drilling rig, an adjusting nut is further arranged between the adjusting bolt and the adjusting backing plate.

[0011] As a specific implementation manner, in the above-mentioned chain combination counterweight device for a rotary drilling rig, the number of the connecting pipes is 4 to 8.

[0012] As a specific implementation manner, in the above-mentioned chain combination counterweight device for a rotary drilling rig, the number of the fastening bolts is 4 to 8.

[0013] As a specific implementation manner, in the above-mentioned chain combination counterweight device for a rotary drilling rig, the number of the adjusting bolts is 4 to 8.

[0014] The chain combination counterweight device for a rotary drilling rig of the present utility model has the following advantages and beneficial effects:

[0015] Compared with the traditional integral filling counterweight, since each counterweight block has a smaller volume, the filling degree of this device is better, the weight distribution is more uniform, and it is more convenient to transport with the vehicle. The counterweight blocks are fixed by chains, and the force is more evenly distributed, which is also more convenient for installation and disassembly. Moreover, through the cooperation between the positioning block and the positioning groove, the installation of the counterweight block is more convenient, and the connection between the counterweight blocks is more stable. In addition, by setting a connecting sleeve between the fixing hole and the fastening bolt, the connection between the counterweight blocks is more stable, thereby improving the overall stability of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the chain combination counterweight device for a rotary drilling rig of the present invention;

[0018] Figure 2 is Figure 1 a partial enlarged view of I in;

[0019] Figure 3 is a bottom view of the chain combination counterweight device for a rotary drilling rig of the present invention;

[0020] Figure 4 is a schematic structural diagram of the adjustment assembly in the chain combination counterweight device for a rotary drilling rig of the present invention.

[0021] DESCRIPTION OF THE REFERENCE NUMERALS:

[0022] 1 - First counterweight block, 11 - Fixing hole, 12 - Fastening bolt, 2 - Second counterweight block, 3 - Third counterweight block, 4 - Positioning block, 5 - Connecting pipe, 6 - Chain, 7 - Adjustment assembly, 71 - Adjustment backing plate, 72 - Adjustment bolt, 73 - Baffle, 74 - Card slot, 75 - Adjustment nut, 76 - Limit bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the specific embodiments of the present utility model and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present utility model.

[0024] Such as Figures 1 to 4As shown in the figure, the utility model discloses a chain combination counterweight device for a rotary drilling rig. The chain combination counterweight device is arranged above a platform (not shown in the figure). Of course, according to the actual working conditions, multiple such counterweight devices can be arranged on the platform. The chain combination counterweight device for the rotary drilling rig includes a first counterweight block 1 fixed to the top of the platform by fastening bolts 12, a second counterweight block 2 arranged above the first counterweight block 1, and a plurality of third counterweight blocks 3 arranged between the first counterweight block 1 and the second counterweight block 2. The specific number of the third counterweight blocks 3 is set according to the actual working conditions and is not limited herein. The bottom of the first counterweight block 1 matches the shape and size of the top of the platform. Among them, positioning grooves are opened above the first counterweight block 1 and the plurality of third counterweight blocks 3. The shape, size, and number of the positioning grooves are designed according to the actual working conditions. The positioning grooves are symmetrically distributed along the center of the length direction of the first counterweight block 1. Positioning blocks 4 matching the positioning grooves are arranged at the bottoms of the second counterweight block 2 and the plurality of third counterweight blocks 3. The positioning blocks 4 are arranged in the positioning grooves. With such a setting, the position limitation between each counterweight block is realized through the cooperation between the positioning block 4 and the positioning groove. This not only makes the installation efficiency between each counterweight block higher, but also makes the connection between each counterweight block more stable. Multiple connecting pipes 5 are arranged through the first counterweight block 1, the second counterweight block 2, and the third counterweight blocks 3. Round holes are opened through the connecting pipes 5. The multiple connecting pipes 5 are symmetrically distributed along the center of the length direction of the first counterweight block 1. Chains 6 are arranged in the round holes in the connecting pipes 5. The shape and size of the chains 6 match the round holes. Chain seats 6 are arranged at the tops of the connecting pipes 5, and adjusting components 7 are arranged at the bottoms. Fixing grooves (not shown in the figure) matching the chains 6 are arranged on the chain seats 6. The axial position of the chains 6 in the grooves can be restricted through the fixing grooves. The adjusting component 7 includes an adjusting backing plate 71 arranged below the connecting pipe 5. The adjusting backing plate 71 is circular. A chain passing hole matching the chain 6 is opened at the center of the adjusting backing plate 71. The chain 6 can freely pass through the chain passing hole. A plurality of adjusting holes (not shown in the figure) are evenly spaced in the circumferential direction along the axis of the chain passing hole on the adjusting backing plate 71. Adjusting bolts 72 are arranged in the adjusting holes. Internal threads matching the external threads of the adjusting bolts 72 are arranged on the inner walls of the adjusting holes. The adjusting bolts 72 are threadedly connected in the adjusting holes. A baffle 73 is arranged at the bottom of the adjusting backing plate 71. A clamping groove 74 matching the chain 6 is opened on the baffle 73. The clamping groove 74 can clamp a single link of the chain 6, thereby restricting the axial position of the chain 6. A limiting bolt 76 is arranged on the clamping groove 74 of the chain 6. When the limiting bolt 76 is tightened, the horizontal position of the chain 6 can be restricted to prevent the chain 6 from slipping out of the clamping groove 74. One end of the chain 6 passes through the chain seat 6, and the other end passes through the chain passing hole and is fixed by the baffle 73 and the limiting bolt 76.

[0025] The adjustment principle of the adjustment component 7 is as follows: One end of the chain 6 away from the adjustment component 7 is axially limited by the chain seat 6. After the other end passes through the chain passing hole, the card slot 74 on the baffle 73 is clamped along the bottom end of the adjustment backing plate 71 on the outer periphery of a single link of the chain 6. Then, the limit bolt 76 is screwed in. At this time, although the axial position and the horizontal position of the chain 6 are restricted, it is still in a movable state. Then, the adjustment bolts 72 are all screwed into the adjustment holes. By gradually tightening the adjustment bolts 72, the adjustment backing plate 71 and the baffle 73 are driven to move downward. Due to the limitation of the position of the chain 6 by the card slot 74, the chain 6 is gradually tightened and has a certain rigidity, so that the counterweight blocks are closely attached to each other, achieving a fixing effect.

[0026] Further, in the chain combination counterweight device for a rotary drilling rig of the present utility model, a fixing hole 11 is provided in the first counterweight block 1. A connecting sleeve is press-fitted in the fixing hole 11. Internal threads matching the fastening bolts 12 are provided on the inner wall of the connecting sleeve. The fastening bolts 12 are threadedly connected to the connecting sleeve. With such a setting, the stability of the connection between the fastening bolts 12 and the fixing hole 11 is improved, and thus the overall stability of the device is improved.

[0027] As a specific implementation manner, in the chain combination counterweight device for a rotary drilling rig of the present utility model, hoisting threaded holes (not shown in the figure) are provided at the tops of the first counterweight block 1, the second counterweight block 2, and the third counterweight block 3. A lifting ring (not shown in the figure) is threadedly connected in the hoisting threaded hole. With such a setting, each counterweight block can be hoisted to a designated position by a lifting device cooperating with the lifting ring.

[0028] As a specific implementation manner, in the chain combination counterweight device for a rotary drilling rig of the present utility model, a washer is provided between the fastening bolts 12 and the fixing hole 11. With such a setting, the stability of the connection between the fastening bolts 12 and the fixing hole 11 is improved, and thus the overall stability of the device is improved.

[0029] As a specific implementation manner, in the chain combination counterweight device for a rotary drilling rig of the present utility model, an adjusting nut 75 is further provided between the adjusting bolts 72 and the adjusting backing plate 71. After the adjusting bolts 72 are tightened, the adjusting nut 75 is tightened until it abuts against the bottom end of the adjusting backing plate 71. With such a setting, the problems of loosening and failure of the adjusting bolts 72 caused by the long-term operation of the rotary drilling rig are avoided.

[0030] As a specific implementation manner, in the chain combination counterweight device for a rotary drilling rig of the present utility model, the number of the connecting pipes 5 is 4 to 8, and more specifically, the number of the connecting pipes 5 is 4.

[0031] As a specific implementation manner, in the chain combined counterweight device for a rotary drilling rig of the present utility model, the number of fastening bolts 12 is 4 to 8, and more specifically, the number of fastening bolts 12 is 6.

[0032] As a specific implementation manner, in the chain combined counterweight device for a rotary drilling rig of the present utility model, the number of adjusting bolts 72 is 4 to 8, and more specifically, the number of adjusting bolts 72 is 4.

[0033] The installation process of the chain combined counterweight device for a rotary drilling rig of the present utility model is as follows: First, each counterweight block is hoisted to a designated position through the cooperation between the hoisting device and the lifting ring. Then, each counterweight block is sequentially combined and placed. Through the cooperation among the chain 6, the chain seat 6, and the adjusting assembly 7, each counterweight block is connected and fixed to each other. Finally, the first counterweight block 1 is fixed to the designated position on the top of the platform through the fastening bolt 12 to complete the installation of the device.

[0034] In summary, compared with the prior art, the chain combined counterweight device for a rotary drilling rig of the present utility model has the following advantages and beneficial effects:

[0035] Compared with the traditional integral filling type counterweight, since each counterweight block has a smaller volume, the filling degree of this device is better, the weight distribution is more uniform, and it is more convenient for transportation by vehicle. Each counterweight block is fixed by the chain 6, the force is more uniform, and it is more convenient for installation and disassembly. Moreover, through the cooperation between the positioning block 4 and the positioning groove, the installation of the counterweight block is more convenient, and the connection between each counterweight block is more stable. In addition, by arranging a connecting sleeve between the fixing hole 11 and the fastening bolt 12, the connection between each counterweight block is more stable, thereby improving the overall stability of this device.

[0036] It should be noted that, in this text, unless otherwise clearly specified and defined, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present utility model can be understood according to 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 these entities or operations. At the same time, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. In addition, in this text, "front", "rear", "left", "right", "upper", "lower", etc. are all referred to the placement state shown in the drawings.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some of the technical features can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A chain combination counterweight device for a rotary drilling rig, wherein the chain combination counterweight device is arranged above a platform, and is characterized in that: The chain combination counterweight device for the rotary drilling rig comprises a first counterweight block fixed to the top of the platform by fastening bolts, a second counterweight block arranged above the first counterweight block, and a plurality of third counterweight blocks arranged between the first counterweight block and the second counterweight block, wherein: A positioning groove is provided on the top of the first counterweight block and the plurality of third counterweight blocks, and the positioning grooves are symmetrically distributed along the length direction of the first counterweight block. Positioning blocks matching the positioning grooves are provided at the bottom of the second counterweight block and the plurality of third counterweight blocks, and the positioning blocks are provided in the positioning grooves. A plurality of connecting pipes are provided through the first counterweight block, the second counterweight block and the third counterweight block, and the plurality of connecting pipes are symmetrically distributed along the length direction of the first counterweight block. A chain is provided in the connecting pipe, a chain seat is provided on the top of the connecting pipe, and an adjusting component is provided on the bottom. A fixing groove matching the chain is provided on the chain seat. The adjusting assembly includes an adjusting pad arranged below the connecting tube, a chain hole matching the chain is provided at the center of the adjusting pad, a plurality of adjusting holes are evenly spaced circumferentially along the axis of the chain hole, an adjusting bolt is provided in the adjusting hole, a baffle is provided at the bottom of the adjusting pad, a slot matching the chain is provided on the baffle, a limiting bolt is provided on the slot, one end of the chain passes through the chain seat, and the other end passes through the chain hole and is fixed to the limiting bolt through the baffle.

2. The chain combination counterweight device for a rotary drilling rig according to claim 1, characterized in that: A fixing hole is provided in the first counterweight block, a connecting sleeve is provided in the fixing hole through an interference sleeve, an inner wall of the connecting sleeve is provided with an internal thread matching the fastening bolt, and the fastening bolt is threadedly connected to the connecting sleeve.

3. The chain combination counterweight device for a rotary drilling rig according to claim 1, characterized in that: The tops of the first counterweight block, the second counterweight block and the third counterweight block are all provided with lifting threaded holes, and the lifting threaded holes are internally threadedly connected with lifting rings.

4. The chain combination counterweight device for a rotary drilling rig according to claim 1, characterized in that: An adjusting nut is also arranged between the adjusting bolt and the adjusting backing plate.

5. The chain combination counterweight device for a rotary drilling rig according to claim 1, characterized in that: The number of the connecting pipes is 4 to 8.

6. The chain combination counterweight device for a rotary drilling rig according to claim 1, characterized in that: The number of the fastening bolts is 4 to 8.

7. The chain combination counterweight device for a rotary drilling rig according to claim 1, characterized in that: The number of the adjusting bolts is 4 to 8.

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