Extensible chain type guide rail

Abstract

The extensible chain type guide rail comprises a guide rail body, the guide rail body is formed by connecting a plurality of chain link modules front and back, the chain link modules at the two ends of the guide rail body are each connected with a fixing piece, and the two fixing pieces are connected through a tensioning assembly; a clamping groove is formed in the end, away from the chain link module, of the fixing piece, the tensioning assembly comprises a tensioning piece and two tensioning nuts, external threads are formed in the two ends of the tensioning piece, and the directions of the external threads at the two ends of the tensioning piece are opposite; the two tensioning nuts are in threaded connection with the two ends of the tensioning piece respectively and located in the clamping grooves of the two fixing pieces respectively. The device is ingenious in conception, simple in structure, convenient to manufacture, high in use flexibility and extremely rapid to mount and dismount, and can be used in different occasions.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline cutting and welding, and particularly relates to a chain-type guide rail that can be extended according to the diameter of the pipeline. Background Art

[0002] With the rise of automated pipe cutting and welding technology, there are a variety of automated cutting and welding tools on the market, but they have the following shortcomings: the fixed guide devices of the cutting and welding tools either cannot change freely with the size of the pipe diameter, or the positioning accuracy cannot meet the requirements, making the cutting and welding effects unable to meet market demand; especially some heavy-duty cutting and beveling equipment have higher requirements on track rigidity. How to develop a guide track that can freely change according to the size of the pipe diameter, has high positioning accuracy, strong rigidity, and is easy and quick to install and disassemble is particularly important. Summary of the Invention

[0003] The purpose of the present invention is to provide an extendable chain guide rail, which can not only be freely combined and extended according to different pipe diameters, but also can achieve the precise positioning, strong rigidity and precise guiding requirements of the rail, while being easy to install and quick to load and unload.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an extendable chain guide rail, including a guide rail main body, the guide rail main body is composed of several chain link modules connected front and back, the chain link modules at both ends of the guide rail main body are respectively connected to a fixing part, and the two fixing parts are connected by a tightening assembly; a slot is provided at the end of the fixing part away from the chain link module, the tightening assembly includes a tightening part and two tightening nuts, both ends of the tightening part are provided with external threads, and the external threads at both ends of the tightening part are in opposite directions; the two tightening nuts are respectively threadedly connected to the two ends of the tightening part, and the two tightening nuts are respectively located in the slots of the two fixing parts.

[0005] Preferably, one end of the tensioning member is a left-handed external thread, the other end is a right-handed external thread, and the middle is a regular hexagonal structure, which ensures efficient and rapid tensioning.

[0006] Preferably, the front end of the link module is provided with a raised structure, the rear end of the link module is provided with a groove, and the groove and the raised structure cooperate with each other, the rear end of the link module and the raised structure are both provided with axial holes, and the two adjacent link modules are connected by a pin shaft.

[0007] Preferably, the pin is a slotted threaded pin, one end of which is a smooth axis, a straight groove is provided on the top, and the other end is provided with a thread of a certain length to facilitate quick positioning and locking.

[0008] Preferably, the bottom of the chain link module is a semicircular arc structure, and the front and rear ends of the semicircular arc structure are respectively provided with a second claw and a first claw.

[0009] Preferably, a guide groove is provided on one side of the chain link module, and the guide groove cooperates with the guide wheel to complete the guidance, and a guide slot is provided on one side of the fixing piece.

[0010] The guide track body is composed of several chain link modules connected together by pins. The chain link modules can be rotated arbitrarily within a certain range of spatial angles through the pins. One side of the chain link module is provided with a guide groove (forming an arc-shaped groove on the side of the guide track body), and the guide groove cooperates with the guide wheel to complete the guidance; the bottom of the chain link module is provided with a claw, and the chain link modules can be arranged and combined to meet the needs of pipes with different diameters.

[0011] Preferably, the guide groove and the guide slot are in the shape of an "eight-shaped" structure, which facilitates smooth guiding of the guide wheel.

[0012] The beneficial effects of the present invention are as follows: the guide rail body adopts chain link modules, so it is suitable for workpieces of different diameters; the chain link modules can rotate within a range of 270° and can be fixed on workpieces of different shapes. The link modules can be quickly positioned and locked by slotted threaded pins, and installation and disassembly are extremely convenient. On the other hand, it ensures fast positioning and installation of fixation, and has excellent flexibility; at the same time, the arc-shaped grooves on the side of the guide rail body ensure the accuracy of the guide movement, and the coordinated use of the fixing parts, the tightening assembly and the tightening nut realizes the rapid connection and tensioning between the connecting parts between two vertical surfaces in the three-dimensional space; the present invention is ingenious in conception, simple in structure, easy to manufacture, and highly flexible in use. It is extremely quick to install and disassemble, and can meet the needs of use in different occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the extendable chain guide track of the present invention; Figure 2 It is a structural diagram of the tensioning component; Figure 3 It is a schematic diagram of the overall structure of the extendable chain guide track; Figure 4 It is the structural diagram of the chain link module; Figure 5 is a structural diagram of a fixing part; Figure 6 This is a structural diagram of the tensioning member. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

[0015] Example 1 like Figure 1-6As shown, an extendable chain guide rail includes a guide rail body, which is composed of several chain link modules 3 connected front to back. The chain link modules 3 at both ends of the guide rail body are respectively connected to a fixing member 4, and the two fixing members 4 are connected by a tightening assembly; a slot 10 is provided at the end of the fixing member away from the chain link module, and the tightening assembly includes a tightening member 5 and two tightening nuts 6. Both ends of the tightening member are provided with external threads, one end is a left-handed external thread, the other end is a right-handed external thread, and the middle is a regular hexagonal structure, which ensures efficient and rapid tightening; the two tightening nuts 6 are respectively threadedly connected to the two ends of the tightening member, and the two tightening nuts are respectively located in the slots 10 of the two fixing members.

[0016] The front end of the link module is provided with a raised structure, and the rear end of the link module is provided with a groove, and the groove and the raised structure cooperate with each other. Axial holes are provided on the rear end and the raised structure of the link module. The two adjacent link modules are connected by a pin shaft 7. The pin shaft 7 is a slotted threaded pin shaft, one end of which is an optical axis, a straight groove is provided on the top, and a thread of a certain length is provided on the other end to facilitate quick positioning and locking.

[0017] The bottom of the chain link module 3 is a semicircular arc structure, and two second clamping claws 9 and two first clamping claws 8 are respectively provided at the front and rear ends of the semicircular arc structure.

[0018] One side of the chain link module is provided with a guide groove 12, which cooperates with the guide wheel 2 to complete the guidance, and one side of the fixing member 4 is provided with a guide slot 13. The shape of the guide groove 12 and the guide slot 13 can be an "eight-shaped" structure to facilitate smooth guidance of the guide wheel 2.

[0019] The guide track body is composed of several chain link modules connected together by pins. The chain link modules can be rotated arbitrarily within a certain range of spatial angles through the pins. One side of the chain link module is provided with a guide groove (forming an arc-shaped groove on the side of the guide track body), and the guide groove cooperates with the guide wheel to complete the guidance; the chain link modules can be arranged and combined to meet the needs of pipes with different diameters.

[0020] Both ends of the chain link module 3 are arc transitions, and the connection between the link modules 3 is a movable joint design, which can be rotated arbitrarily within a certain angle range, so that it can be fixed on workpieces of different shapes. Together with the claws at the bottom, the whole forms an internal and external double clamping claw structure, which is stably fixed to the workpiece and has strong rigidity as a whole.

[0021] The tensioning assembly 1 adopts a split structure design. Two tensioning nuts 6 are first installed at both ends of the tensioning member 5. The tensioning nuts 6 slide down from the top of the slot of the fixing member 4 to the bottom of the fixing member 4. The tensioning member 5 is rotated to tighten the entire guide rail, and the second claw 9 and the first claw 8 are firmly fixed to the workpiece.

[0022] When in use, first connect several link modules 3 and fixing parts 4 into a whole through the groove thread pin shaft 7, and the fixing parts 4 are located at both ends of the ring. Next, fix the entire guide rail to the workpiece to be cut or welded, and connect the tightening nut 6 to the two ends of the tightening part 5 to form an assembly. The entire assembly slides from top to bottom through the fixing part 4 to the bottom of the fixing part 4, and rotates the tightening part 5 clockwise to fix the entire guide rail to the workpiece.

[0023] The above are merely embodiments of the present invention. Common knowledge such as the specific structures and characteristics of the solutions are not described in detail herein. It should be noted that those skilled in the art may make several modifications and improvements without departing from the structure of the present invention, and these modifications and improvements should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims

1. An extendable chain guide track, characterized in that: The guide rail body comprises a plurality of chain link modules connected front to back, and the chain link modules at both ends of the guide rail body are respectively connected to a fixing piece, and the two fixing pieces are connected by a tensioning assembly; A slot is provided at one end of the fixing piece away from the chain link module. The tensioning assembly includes a tensioning piece and two tensioning nuts. External threads are provided at both ends of the tensioning piece, and the directions of the external threads at both ends of the tensioning piece are opposite; the two tensioning nuts are respectively threadedly connected to the two ends of the tensioning piece, and the two tensioning nuts are respectively located in the slots of the two fixing pieces.

2. The extendable chain guide rail according to claim 1, wherein: One end of the tensioning piece is a left-handed external thread, the other end is a right-handed external thread, and the middle is a regular hexagonal structure, which ensures efficient and rapid tensioning.

3. The extendable chain guide rail according to claim 1, wherein: The front end of the link module is provided with a raised structure, the rear end of the link module is provided with a groove, and the groove and the raised structure cooperate with each other. Axial holes are provided on the rear end of the link module and the raised structure, and two adjacent link modules are connected by a pin shaft.

4. The extendable chain guide track according to claim 1, wherein: The bottom of the chain link module is a semicircular arc structure, and the front and rear ends of the semicircular arc structure are respectively provided with a second clamping claw and a first clamping claw.

5. The extendable chain guide track according to claim 1, wherein: One side of the chain link module is provided with a guide groove, which cooperates with the guide wheel to complete the guidance, and one side of the fixing piece is provided with a guide slot.

6. The extendable chain guide track according to claim 5, characterized in that: The guide slot is in the shape of an "eight-shaped" structure, which facilitates smooth guiding of the guide wheel.

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