CN111059355A - Combined chain plate type pulling and clamping tool - Google Patents

Combined chain plate type pulling and clamping tool Download PDF

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Publication number
CN111059355A
CN111059355A CN202010191118.2A CN202010191118A CN111059355A CN 111059355 A CN111059355 A CN 111059355A CN 202010191118 A CN202010191118 A CN 202010191118A CN 111059355 A CN111059355 A CN 111059355A
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CN
China
Prior art keywords
plate
clamping
clamping plate
chain plate
chain
Prior art date
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Granted
Application number
CN202010191118.2A
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Chinese (zh)
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CN111059355B (en
Inventor
许兆宁
陶佳栋
朱华
李仁闯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shengli new big new materials Co., Ltd
Original Assignee
Shengli Oilfield Xinda Pipes Technology Development Co Ltd
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Application filed by Shengli Oilfield Xinda Pipes Technology Development Co Ltd filed Critical Shengli Oilfield Xinda Pipes Technology Development Co Ltd
Priority to CN202010191118.2A priority Critical patent/CN111059355B/en
Publication of CN111059355A publication Critical patent/CN111059355A/en
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Publication of CN111059355B publication Critical patent/CN111059355B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/06Accessories therefor, e.g. anchors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/06Accessories therefor, e.g. anchors
    • F16L1/09Accessories therefor, e.g. anchors for bringing two tubular members closer to each other
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12Laying or reclaiming pipes on or under water
    • F16L1/20Accessories therefor, e.g. floats, weights

Abstract

The invention provides a combined chain plate type pulling and clamping tool which comprises a left clamping part, a right clamping part, an upper chain plate part and a lower chain plate part, wherein the upper chain plate part and the lower chain plate part are arranged in an up-down symmetrical mode; the upper chain plate part and the lower chain plate part are respectively composed of a plurality of chain plates which are sequentially pivoted; and the left clamping part and the right clamping part are respectively provided with a connecting piece for pulling the pipeline section along the axial direction. The atress is more even when the pipeline section is fixed by the centre gripping in this application, and the pipeline section is difficult to the slippage after tightly being pressed from both sides, when utilizing actuating mechanism to draw the pipeline section along the axial, the removal of pipeline section is more steady to be favorable to the accurate butt joint between the pipeline section.

Description

Combined chain plate type pulling and clamping tool
Technical Field
The invention relates to the technical field of pipeline construction, in particular to a combined chain plate type pulling and clamping tool for dragging pipeline sections when two adjacent pipeline sections are in butt joint.
Background
The pipeline laying of petroleum pipeline, natural gas pipeline, water pipeline and urban sewage pipeline, etc., need to connect two adjacent pipeline sections hermetically, there are sockets with greater calibers on one end of the pipeline section, another end of the pipeline section is the insertion end, the excircle surface of the insertion end is a external conical surface generally, the medial surface of the socket is the internal conical surface of the adaptation of external conical surface; when two adjacent pipeline sections are butted, the outer conical surface or the inner conical surface is coated with the adhesive, and the insertion end of one pipeline section needs to be inserted into the socket of the other pipeline section, so that the pipeline sections are in sealed butt joint.
At present, the sealing butt joint work of the pipeline sections does not have a special dragging tool, the construction is usually carried out by adopting methods such as manual work or sling hoisting, time and labor are wasted, the butt joint is very easy to deviate, namely, the two pipeline sections cannot be laid coaxially, the gap of the two pipeline sections in the circumferential direction is not uniform, the thickness of the adhesive is different, the sealing quality is not high, and the construction quality is seriously influenced.
Disclosure of Invention
The invention aims to provide a combined chain plate type pulling and clamping tool, and aims to solve the technical problems that a special pulling tool is lacked, and time, labor and precision are wasted when pipeline sections are butted in the prior art.
In order to solve the technical problem, the invention provides a combined chain plate type pulling and clamping tool, which comprises a left clamping part and a right clamping part which are arranged in a left-right symmetrical manner, and an upper chain plate part and a lower chain plate part which are arranged in an up-down symmetrical manner;
the left clamping portion includes: the left upper clamping plate, the left lower clamping plate and the left executive component; the left ends of the left upper clamping plate and the left lower clamping plate are pivoted, a left clamping opening is formed between the left upper clamping plate and the left lower clamping plate, and the left executing piece is arranged between the left upper clamping plate and the left lower clamping plate and used for controlling the size of the left clamping opening;
the right clamping portion includes: the right upper clamping plate, the right lower clamping plate and the right executive component; the right ends of the right upper clamping plate and the right lower clamping plate are pivoted, a right clamping opening is formed between the right upper clamping plate and the right lower clamping plate, and the right executing piece is arranged between the right upper clamping plate and the right lower clamping plate and used for controlling the size of the right clamping opening;
the upper chain plate part and the lower chain plate part are respectively composed of a plurality of chain plates which are sequentially pivoted;
two ends of the upper chain plate part are respectively hinged with the right upper clamping plate and the left upper clamping plate;
two ends of the lower chain plate part are respectively hinged with the right lower clamping plate and the left lower clamping plate;
and the left clamping part and the right clamping part are respectively provided with a connecting piece for pulling the pipeline section along the axial direction.
In this application, left clamping part, cochain board, right clamping part and lower chain board are end to end connection in proper order, surround into a ring cover that can suit the pipeline section, during the use, pipeline section cartridge is in the ring cover, when utilizing left executive component and right executive component to adjust left centre gripping mouth and right centre gripping mouth size, cochain board and lower chain board are close to relatively or keep away from relatively, and the cochain board is held tightly with the pipeline section in the middle of when being close to relatively with lower chain board. After the pipeline section is clasped or clamped, the pipeline section can be pulled to move through the connecting piece.
Different from the pulling mode of fixing the rope in the prior art, the combined chain plate type pulling and clamping tool does not bear the weight of the pipeline section, and after the pipeline section is clamped, the pipeline section is pulled in the axial direction only by the friction force between the combined chain plate type pulling and clamping tool and the pipeline section; the friction forces are symmetrically distributed in the circumferential direction of the pipeline section. The atress is more even when the pipeline section is fixed by the centre gripping in this application, and the pipeline section is difficult to the slippage after tightly being pressed from both sides, when utilizing actuating mechanism to draw the pipeline section along the axial, the removal of pipeline section is more steady to be favorable to the accurate butt joint between the pipeline section.
Further, the connecting piece includes left connecting piece and the right connecting piece that bilateral symmetry set up.
Further, the left connecting piece is arranged on the end part of a left pivot shaft for pivoting the left upper clamping plate and the left lower clamping plate; the right connecting piece is arranged on the end part of a right pivot shaft for pivoting the right upper splint and the right lower splint.
Furthermore, the connecting piece is a hook, a connecting ring or a threaded connection structure (a threaded hole or an external thread section arranged at the end part of the pivot shaft).
Furthermore, two adjacent chain plates are connected in a quick-release manner; the number of the chain plates forming the upper chain plate part and the lower chain plate part is adjustable.
Link joint quantity through increasing last chain plate portion and lower chain plate portion to can satisfy the construction requirement of the pipeline section of different external diameters, thereby improve the application scope of fastening tool in this application.
Preferably, two adjacent link plates are rotatably connected with each other through a pin shaft.
Further, the left actuator includes: the screw, the pressing block and the compression nut;
the pressing block is provided with a through hole and is pivoted on the left upper clamping plate or the left lower clamping plate through a rotating shaft (specifically, the left upper clamping plate or the left lower clamping plate is provided with a mounting seat, and two ends of the rotating shaft which is integrated with the pressing block are rotatably inserted into the shaft hole of the mounting seat);
the top end of the screw rod is pivoted on the left lower splint or the left upper splint through a rotating shaft (specifically, the left lower splint or the left upper splint is provided with a mounting seat, and two ends of the rotating shaft which is integrated with the screw rod are rotatably inserted into shaft holes of the mounting seat); after the tail end of the screw rod passes through the through hole, the screw rod is screwed by the compression nut;
the right actuator includes: the screw, the pressing block and the compression nut;
the pressing block is provided with a through hole and is pivoted on the right upper clamping plate or the right lower clamping plate through a rotating shaft (specifically, the right upper clamping plate or the right lower clamping plate is provided with a mounting seat, and two ends of the rotating shaft which is integrated with the pressing block are rotatably inserted into the shaft hole of the mounting seat);
the top end of the screw rod is pivoted on the right lower splint or the right upper splint through a rotating shaft (specifically, the right lower splint or the right upper splint is provided with a mounting seat, and two ends of the rotating shaft which is integrated with the screw rod are rotatably inserted into a shaft hole of the mounting seat); and after the tail end of the screw rod penetrates through the via hole, the screw rod is screwed by utilizing the compression nut.
Further, the executive component is electronic, pneumatic or the extensible component that surges, and the extensible component includes body and telescopic link, and the body is connected with punch holder or lower splint hinge, and the telescopic link is connected with lower splint or punch holder hinge, drives the contained angle change between punch holder and the lower splint through the relative flexible removal between telescopic link and the body, and then drives cochain board and lower chain board and embraces tightly or loosen the pipeline section.
Furthermore, a protective layer made of flexible materials is laid on the inner side face (the side contacting with the pipeline section) of the chain plate. The protective layer is preferably made of flexible materials such as rubber and plastics, and the pipeline section is prevented from being scratched by the chain plates.
Furthermore, the inner side face of the chain plate, which is contacted with the pipeline section, is a plane or an arc-shaped face which is generally matched with the excircle of the pipeline section.
Furthermore, two combined chain plate type pulling and clamping tools are respectively sleeved on two adjacent pipeline sections, and the two combined chain plate type pulling and clamping tools are connected between two left connecting pieces and between two right connecting pieces through pulling and clamping tools.
The two combined flight pulling and clamping tools are pulled by a pulling tool (such as a turnbuckle, or a hydraulic or pneumatic telescopic rod, etc.), which in turn forces the two pipe sections towards each other.
By adopting the technical scheme, the invention has the following beneficial effects:
the combined chain plate type pulling and clamping tool provided by the invention has the advantages that the structure is simple, the use is convenient, the stress is more uniform when the pipeline section is clamped and fixed, the pipeline section is not easy to slip after being clamped, and when the pipeline section is pulled axially by using the driving mechanism, the movement of the pipeline section is more stable, so that the accurate butt joint of the pipeline sections is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a front view of a combined chain plate type pulling and clamping tool provided by an embodiment of the invention;
FIG. 2 is a top view of the combination flight pulling grip tool of FIG. 1;
FIG. 3 is a schematic structural diagram of a link plate portion in an embodiment of the present invention;
FIG. 4 is a plan view of a link plate portion in the embodiment of the present invention;
FIG. 5 is a partial view of the left clamp portion in an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a briquette according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of an upper or lower splint according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a screw of the actuator according to the embodiment of the present invention;
fig. 9 is a schematic view of a use state of the combined chain plate type pulling and clamping tool according to the embodiment of the invention.
Reference numerals:
1-a pipe section; 2-a pulling tool; 3-a guide; 10-a left clamping portion; 11-left lower splint; 11 a-a through hole; 12-upper left splint; 13-left actuator; 13 a-screw; 13 b-a compression nut; 13 c-a first mount; 13 d-briquetting; 13 f-a second mount; 20-right grip; 21-right lower splint; 22-upper right splint; 23-right actuator; 30-upper chain plate portion; 31-a chain plate; 32-a protective layer; 40-lower link plate part; 50-a connector; 51-left connector; 52-right connector.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to specific embodiments.
As shown in fig. 1-2, the present embodiment provides a combined chain plate type pulling and clamping tool, which is used for clamping and pulling a pipe segment, and does not bear the weight of the pipe segment 1, and after clamping the pipe segment 1, the combined chain plate type pulling and clamping tool only pulls the pipe segment 1 in the axial direction by friction force between the combined chain plate type pulling and clamping tool and the pipe segment 1. The clamping device comprises a left clamping part 10 and a right clamping part 20 which are arranged in a left-right symmetrical manner, and an upper chain plate part 30 and a lower chain plate part 40 which are arranged in an up-down symmetrical manner;
the left clamp portion 10 includes: a left upper clamping plate 12, a left lower clamping plate 11 and a left executive component 13; the left ends of the left upper splint 12 and the left lower splint 11 are pivoted, a left clamping opening is formed between the left upper splint 12 and the left lower splint 11, and the left actuating member 13 is connected between the left upper splint 12 and the left lower splint 11 and used for controlling the size of the left clamping opening.
The right clamping portion 20 includes: a right upper clamping plate 22, a right lower clamping plate 21 and a right actuating piece 23; the right ends of the right upper clamping plate 22 and the right lower clamping plate 21 are pivoted, a right clamping opening is formed between the right upper clamping plate 22 and the right lower clamping plate 21, and the right executing piece 23 is arranged between the right upper clamping plate 22 and the right lower clamping plate 21 and used for controlling the size of the right clamping opening;
both ends of the upper chain plate part 30 are respectively pivoted with the left end of the right upper splint 22 and the right end of the left upper splint 12 through pivoting shafts; the two ends of the lower chain plate part 40 are respectively pivoted with the left end of the right lower clamping plate 21 and the right end of the left lower clamping plate 11 through pivoting shafts; the left and right clamps 10 and 20 are also provided with connectors 50 for pulling the pipe section 1 in the axial direction, respectively.
As shown in fig. 3 and 4, the upper chain plate portion 30 and the lower chain plate portion 40 are respectively composed of a plurality of chain plates 31 which are pivoted in sequence; the number of the link plates 31 is determined according to the diameter size of the pipe section and the size of the link plates 31 themselves. The structure is similar to a transmission chain structure, and two adjacent chain plates are pivoted through a pin shaft or a screw rod and other shaft bodies. The inner side (the side in contact with the pipe section) of the link plate 31 is coated with a protective layer 32 made of a flexible material. The protective layer 32 is preferably made of flexible materials such as rubber and plastic, and prevents the chain plates from scratching the pipeline sections.
In this embodiment, the protective layer 32 is a flexible pad, and is disposed on the inner side of the link plate by means of screws or bonding. The chain plates 31 are hinged through bolts, nuts and gaskets, so that the quick assembly and disassembly can be realized, and the pipeline connecting device is convenient to use pipelines with different outer diameters by increasing the number of the chain plates.
In this application, left clamping part 10, go up chain board 30, right clamping part 20 and lower chain board 40 end to end in proper order, but the ring cover that encloses into a suit pipeline section 1, during the use, pipeline section 1 cartridge is in the ring cover, when utilizing left executive component 13 and right executive component 23 to adjust left centre gripping mouth and right centre gripping mouth size, it is relatively close to or keep away from along with to go up chain board 30 and lower chain board 40, it embraces pipeline section 1 in the middle of tightly to go up chain board 30 and lower chain board 40 when being relatively close to. After the pipe section 1 is gripped or clamped, the pipe section 1 can be pulled to move by means of the connecting piece 50.
With the fixed mode of pulling of current rope, the atress is more even when pipeline section 1 is fixed by the centre gripping in this application, and pipeline section 1 is difficult to the slippage after being pressed from both sides tightly, when utilizing actuating mechanism to pull pipeline section 1 along the axial, the removal of pipeline section 1 is more steady to be favorable to the accurate butt joint between the pipeline section 1.
As shown in fig. 1 and 2, the link 50 includes a left link 51 and a right link 52 which are arranged bilaterally symmetrically.
The left connecting piece 51 is arranged on the end part of a left pivot shaft for pivoting the left upper clamp plate 12 and the left lower clamp plate 11; the right link 52 is provided on an end of a right pivot shaft for pivoting the right upper and lower clamp plates 22 and 21.
The connecting piece in this embodiment is a lifting ring integrally arranged with a pivot shaft between the upper clamping plate and the lower clamping plate, and the pivot shaft and the lifting ring form a lifting ring bolt structure. Of course, the connecting member may also be a hook, or a connecting screw hole or an external thread provided at the end of the pivot shaft.
In this embodiment, the actuator includes a screw, a pressing block, and a pressing nut. Taking the left actuator 13 as an example, as shown in fig. 5, the left actuator 13 includes: a screw 13a, a pressing block 13d and a compression nut 13 b. As shown in fig. 6-8, a through hole is arranged on the pressing block 13d, and the pressing block 13d is pivoted on the left upper clamping plate 12 through a rotating shaft; the top end of the screw rod 13a is pivoted on the left lower splint 11 through a rotating shaft; specifically, the left upper clamp plate 12 is provided with a first mounting seat 13c, and two ends of a rotating shaft integrally arranged with the pressing block 13d are rotatably inserted into shaft holes of the first mounting seat 13 c; a second mounting seat 13f is arranged at the bottom of the left lower clamping plate 11, and two ends of a rotating shaft which is integrated with the screw 13a are rotatably inserted into shaft holes of the second mounting seat 13 f; as shown in fig. 7, through holes 11a for passing screws 13a are provided on the left upper clamp plate 12 and the left lower clamp plate 11; and the screw 13a sequentially passes through the through holes 11a of the two clamping plates and the through holes on the pressing block 13d, and then is screwed by using the compression nut 13 b.
The structure of the right actuator 23 is similar to that of the left actuator 13, and will not be described again.
As shown in fig. 9, in use, two combined chain plate type pulling and clamping tools are respectively sleeved on two adjacent pipeline sections 1, and two left connecting pieces 51 and two right connecting pieces 52 on the two combined chain plate type pulling and clamping tools are respectively connected through the pulling tool 2. Two pipe sections 1 are preferably placed on the guide 3, thereby improving the working accuracy and efficiency. By pulling the tool 2 (e.g. a turnbuckle, or a hydraulic or pneumatic telescopic rod, etc.), the two combined flight pulling gripping tools are pulled, which in turn forces the two pipe sections 1 towards each other.
The combined chain plate type pulling and clamping tool is simple in structure, adopts a combined chain plate structure, and realizes clamping of the tool by adopting the principle of polygonal circumscribed circles; the clamping plate of the clamping mechanism has certain rigidity, so that the clamping mechanism can prevent fastening deformation; the number of the chain plates can be increased or decreased to adapt to pipelines with different specifications; the clamping tool adopts a symmetrical structure, so that the tension of the wire tightening mechanism can be balanced, and the phenomenon that the pipeline is deviated due to pulling is prevented, and the construction quality is influenced; chain plates of the clamping tool are standard components, the interchangeability is strong, and one chain plate can be replaced by another chain plate at any time when being damaged; an actuating member in the clamping tool adopts a special design mode, so that the bolt is ensured to be vertically upward, and the purposes of fastening and clamping are facilitated; meanwhile, according to the polygon circumscribed circle theory, the more the chain plates are, the larger the contact area is, the small structure of the chain plates can effectively increase the contact area, thereby increasing the friction force and preventing the tool from sliding; the chain plate is made of spring steel, can be stressed and deformed to increase the coating contact area, so that the friction force is increased, and the tool is prevented from sliding. The pipeline section is difficult to slip after being clamped tightly, and when dragging the pipeline section along the axial direction, the removal of pipeline section is more steady to be favorable to the accurate butt joint between the pipeline section.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A combined chain plate type pulling and clamping tool is characterized by comprising a left clamping part and a right clamping part which are arranged in a bilateral symmetry mode, and an upper chain plate part and a lower chain plate part which are arranged in an up-down symmetry mode;
the left clamping portion includes: the left upper clamping plate, the left lower clamping plate and the left executive component; the left ends of the left upper clamping plate and the left lower clamping plate are pivoted, a left clamping opening is formed between the left upper clamping plate and the left lower clamping plate, and the left executing piece is arranged between the left upper clamping plate and the left lower clamping plate and used for controlling the size of the left clamping opening;
the right clamping portion includes: the right upper clamping plate, the right lower clamping plate and the right executive component; the right ends of the right upper clamping plate and the right lower clamping plate are pivoted, a right clamping opening is formed between the right upper clamping plate and the right lower clamping plate, and the right executing piece is arranged between the right upper clamping plate and the right lower clamping plate and used for controlling the size of the right clamping opening;
the upper chain plate part and the lower chain plate part are respectively composed of a plurality of chain plates which are sequentially pivoted;
two ends of the upper chain plate part are respectively hinged with the right upper clamping plate and the left upper clamping plate;
two ends of the lower chain plate part are respectively hinged with the right lower clamping plate and the left lower clamping plate;
and the left clamping part and the right clamping part are respectively provided with a connecting piece for pulling the pipeline section along the axial direction.
2. The combination link plate type pulling and clamping tool as set forth in claim 1, wherein the connecting member comprises a left connecting member and a right connecting member which are arranged in bilateral symmetry.
3. The combination flight pulling and clamping tool of claim 2, wherein the left connecting member is disposed on an end of a left pivot shaft for pivotally connecting the left upper and lower clamping plates; the right connecting piece is arranged on the end part of a right pivot shaft for pivoting the right upper splint and the right lower splint.
4. The combination link plate type pulling and clamping tool as set forth in claim 1, wherein the connecting piece is a hook, a connecting ring or a threaded connecting structure.
5. The combination link plate type pulling and clamping tool according to claim 1, wherein the adjacent two link plates are connected in a quick-release manner; the number of the chain plates forming the upper chain plate part and the lower chain plate part is adjustable.
6. The combination flight pulling clamp of claim 1, wherein the left actuator comprises: the screw, the pressing block and the compression nut;
the pressing block is provided with a through hole and is pivoted on the left upper clamping plate or the left lower clamping plate through a rotating shaft; the top end of the screw rod is pivoted on the left lower clamping plate or the left upper clamping plate through a rotating shaft; after the tail end of the screw rod passes through the through hole, the screw rod is screwed by the compression nut;
the right actuator includes: the screw, the pressing block and the compression nut;
the pressing block is provided with a through hole and is pivoted on the right upper clamping plate or the right lower clamping plate through a rotating shaft; the top end of the screw rod is pivoted on the right lower clamping plate or the right upper clamping plate through a rotating shaft; and after the tail end of the screw rod penetrates through the via hole, the screw rod is screwed by utilizing the compression nut.
7. The combination slat type pulling and clamping tool according to claim 1, wherein the actuating member is an electric, pneumatic or hydraulic expansion member, the expansion member includes a body and an expansion link, the body is hinged to the upper plate or the lower plate, the expansion link is hinged to the lower plate or the upper plate, the relative expansion and contraction movement between the expansion link and the body changes the included angle between the upper plate and the lower plate, so as to drive the upper chain plate and the lower chain plate to clamp or loosen the pipe section.
8. The combined chain plate type pulling and clamping tool as claimed in claim 2, wherein two combined chain plate type pulling and clamping tools are respectively sleeved on two adjacent pipeline sections, and two left connecting pieces and two right connecting pieces on the two combined chain plate type pulling and clamping tools are respectively connected through a pulling tool.
9. The combination link plate type pulling and clamping tool according to claim 1, wherein a protective layer made of flexible material is coated on the inner side surface of the link plate.
CN202010191118.2A 2020-03-18 2020-03-18 Combined chain plate type pulling and clamping tool Active CN111059355B (en)

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CN112082022B (en) * 2020-08-26 2021-12-28 东营经济技术开发区东汇新能源有限公司 Telescopic connecting device for pipeline connection of underground pipe network system

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