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CN-224229181-U - Light inner open bridge type drag chain

CN224229181UCN 224229181 UCN224229181 UCN 224229181UCN-224229181-U

Abstract

The utility model discloses a light-duty inner open bridge type drag chain, which belongs to the technical field of drag chains and comprises a plurality of link main bodies and joints I and joints II at two ends of the link main bodies, wherein the link main bodies are connected in a head-to-tail mode through a connecting structure and limit the bending angle of the drag chain through a limiting structure, the middle parts of the long edges of two side chain plates of the link main bodies are respectively connected through a beam I and a beam II, an outer side beam I and the two side chain plates are of an integrated structure, an inner side beam II is detachably connected, various pipelines in the drag chain can be quickly installed or maintained without threading, the maintenance process is greatly simplified, adjacent chain plates are connected in a rotating mode through the connecting structure, the drag chain is convenient to bend, and meanwhile the joints I and the joints II are respectively connected with the link main bodies at two ends of the drag chain in a rotating mode or are fixedly connected, and the drag chain is flexible and convenient to apply. The utility model has compact structure and small volume, can be suitable for small equipment with limited space, adopts engineering plastic injection molding, and can keep high rigidity to meet the requirement of basic load.

Inventors

  • SUN XIANGYANG

Assignees

  • 东莞市圣达机械科技有限公司

Dates

Publication Date
20260512
Application Date
20250526

Claims (10)

  1. 1. A light-duty inner open bridge type drag chain is characterized by comprising a plurality of link main bodies and connectors I and II at two ends of the link main bodies, wherein the link main bodies are connected end to end sequentially through a connecting structure and used for enabling the drag chain to realize unidirectional bending, the connectors I and II are respectively connected with the link main bodies at two ends of the drag chain in a rotating mode or fixedly connected mode, the link main bodies comprise two relatively parallel chain plates and a cross beam I and a cross beam II in the middle of the upper side and the lower side of the link main bodies, the cross beam I is arranged on the outer side of the drag chain after bending, two ends of the cross beam I are fixedly connected with the chain plates at two sides into an integral structure, the cross beam II is arranged on the inner side of the drag chain after bending, two ends of the cross beam II are detachably connected with the chain plates at two ends of the drag chain, connecting plates of the connectors I and II are respectively connected with the chain plates at two ends of the drag chain through the connecting structure, adjacent chain plates are matched through limiting structures, and the limiting structures are used for limiting bending angles of the drag chain.
  2. 2. The light inner open bridge type drag chain of claim 1, wherein the edges of the two ends of the chain plate and the edges of the connecting plates of the first joint and the second joint are arc-shaped, the connecting structure comprises a rotating shaft and a positioning hole in running fit with the rotating shaft, the rotating shaft is arranged at the outer side of the connecting plate of one end of the chain plate and the first joint and is positioned at the center of the arc-shaped edge, and the positioning hole is arranged at the other end of the chain plate and the center of the arc-shaped edge of the connecting plate of the second joint.
  3. 3. The light inner-open bridge type drag chain of claim 2, wherein the limiting structure comprises a first limiting block, a second limiting block and a second limiting block, wherein the first limiting block is matched with the first limiting block, the second limiting block is matched with the second limiting block, the rotating shaft is arranged in the middle of a sinking platform outside the end part of the chain plate, the sinking groove is arranged on the inner wall of the chain plate for positioning Kong Lice, the first limiting block is arranged in the middle of the side wall of the sinking platform and is positioned in the middle of the chain plate, the first limiting block is arranged at the edge of the sinking groove inside the end part of the adjacent chain plate and is an arc-shaped groove concentric with the rotating shaft, the second limiting block is arranged on the side wall of the sinking groove and is positioned in the middle of the chain plate; The first limiting block can slide in the first limiting groove in an arc manner, and the second limiting block can slide in the second limiting groove in an arc manner, wherein the radians of the first limiting groove and the second limiting groove are the same, and the corresponding central angles of the first limiting groove and the second limiting groove are smaller than 90 degrees, so that the bending angle of the drag chain is limited; The side walls of the first limiting groove and the second limiting groove, which are close to the middle of the end part of the chain plate, are parallel to the central connecting line of the rotating shaft and the positioning hole, and the other side walls of the first limiting groove and the second limiting groove are arranged towards the inner side of the drag chain bending.
  4. 4. The light-duty inner bridge type drag chain according to claim 3, wherein a clamping groove I is formed in the outer side edge of the end portion of the connecting plate of the first connector and can be matched with a limiting block II on the inner side of an adjacent chain plate, a clamping groove II is formed in the inner side edge of the end portion of the connecting plate of the second connector and can be matched with a limiting block I on the outer side of the adjacent chain plate.
  5. 5. The light-duty inner bridge type drag chain of claim 4, wherein the first clamping grooves are arranged at the outer side edge of the connecting plate of the first joint, and an included angle of the first clamping grooves is 90 degrees, or the first clamping grooves are arc-shaped grooves with an angle ranging from-53 degrees to 90 degrees.
  6. 6. The light-duty inner bridge type drag chain of claim 4, wherein the two clamping grooves at the inner side edge of the connecting plate of the second joint are 90 degrees, or the two clamping grooves are arc-shaped grooves with an angle ranging from-53 degrees to 90 degrees.
  7. 7. The light-duty inner open bridge type drag chain of claim 4, wherein the tail ends of the middle plates of the first joint and the second joint are respectively provided with a row of comb teeth, and adjacent comb teeth are parallel and parallel to the connecting plates at two sides.
  8. 8. The light inner open bridge type drag chain of claim 1, wherein one end of the second beam is rotationally connected with the middle part of the edge of one side chain plate through a fixed shaft, and the other end of the second beam is connected with the middle part of the edge of the other side chain plate through a clamping structure; The middle parts of the edges of the chain plates on two sides are respectively provided with a mounting groove, the fixed shaft is arranged in the mounting groove in the middle of the chain plate on one side, a gap is formed between the fixed shaft and the bottom of the mounting groove, one end of the second cross beam is provided with a sleeve matched with the fixed shaft, the sleeve is of a semi-surrounding structure with a notch, the notch of the sleeve faces to the outer side, the solid part of the sleeve is arranged in the gap between the fixed shaft and the mounting groove, the bottom of the mounting groove in the middle of the edge of the chain plate on the other side is provided with a protruding tongue, and the other end of the second cross beam is provided with a claw matched with the protruding tongue.
  9. 9. The light inner open bridge type drag chain according to claim 8, wherein the protruding tongue is arranged in the middle of the mounting groove, the protruding tongue is of a special-shaped structure with protruding upper ends, the inner side of the upper end of the protruding tongue is an arc surface, the outer side of the upper end of the protruding tongue is a clamping head matched with the clamping jaw, the clamping head is of a right trapezoid structure, the top of the clamping head is a downward inclined guiding inclined surface, the root of the inner side of the clamping jaw is an inner arc surface matched with the arc surface of the protruding tongue, barbs are arranged at the tail ends of the clamping jaw and are used for being matched with the clamping head on the outer side of the protruding tongue, protruding edge edges are arranged on two sides of the root of the sleeve and the clamping jaw, one side of the edge is attached to the inner wall of the chain plate, and the other side of the edge is in arc transition with two side edges of the beam II.
  10. 10. The light inner open bridge type drag chain according to any one of claims 1-9, wherein the link main body, the first joint and the second joint are all formed by injection molding engineering plastics, the height of an inner cavity of the link main body is 45mm, the width of the inner cavity of the link main body is 50mm, and the main body parts of the first cross beam and the second cross beam are of I-shaped structures with U-shaped grooves at two side edges.

Description

Light inner open bridge type drag chain Technical Field The utility model belongs to the technical field of drag chains, and particularly relates to a light-weight inner-open bridge drag chain. Background The drag chain is used for binding a cable or an electric wire or an air pressure pipe and an oil pressure pipeline so as to facilitate the rotation and movement of the drag chain, is commonly used for protecting various pipelines such as cables, oil pipes and air pipes in mechanical equipment, and can meet different movement requirements of the equipment. At present, the structure of the existing drag chain is heavy, the volume is large, various cables are difficult to assemble and maintain, and the drag chain is inconvenient to draw and discharge and is not suitable for equipment application with limited space. Disclosure of utility model In order to solve the problems, the utility model provides a light-weight inner open bridge type drag chain. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The light internal bridge type drag chain comprises a plurality of link main bodies and connectors I and II at the two ends of the link main bodies, wherein the link main bodies are connected end to end through connecting structures in sequence and used for enabling the drag chain to realize unidirectional bending, the connectors I and II are respectively connected with the link main bodies at the two ends of the drag chain in a rotating mode or fixedly connected mode, the link main bodies comprise two relatively parallel chain plates and a cross beam I and a cross beam II in the middle of the upper side and the lower side of the link main bodies, the cross beam I is arranged on the outer side of the drag chain after bending, the two ends of the cross beam I are fixedly connected with the chain plates at the two sides into an integral structure, the cross beam II is arranged on the inner side of the drag chain after bending, the two ends of the cross beam II are detachably connected with the chain plates at the two ends of the drag chain, connecting plates of the connectors I and II are respectively connected with the chain plates at the two ends of the drag chain through connecting structures, adjacent chain plates are matched through limiting structures, and the limiting structures are used for limiting the bending angle of the drag chain. Further, the edges of the two ends of the chain plate and the edges of the connecting plates of the first joint and the second joint are arc-shaped, the connecting structure comprises a rotating shaft and a positioning hole in running fit with the rotating shaft, the rotating shaft is arranged on the outer side of the connecting plate of one end of the chain plate and the first joint and is positioned at the circle center of the arc-shaped edge, and the positioning hole is arranged at the circle center of the arc-shaped edge of the connecting plate of the other end of the chain plate and the second joint. The limiting structure comprises a limiting block I, a limiting block II and a limiting groove II, wherein the limiting block I is matched with the limiting block I, the limiting block II is matched with the limiting block II, the rotating shaft is arranged in the middle of a sinking platform at the outer side of the end part of the chain plate, a sinking groove is arranged on the inner wall of the chain plate of the positioning Kong Lice, the limiting block I is arranged in the middle of the side wall of the sinking platform and is positioned in the middle of the chain plate, the limiting groove I is arranged at the edge of the sinking groove at the inner side of the end part of the adjacent chain plate and is an arc-shaped groove concentric with the rotating shaft; The first limiting block can slide in the first limiting groove in an arc manner, and the second limiting block can slide in the second limiting groove in an arc manner, wherein the radians of the first limiting groove and the second limiting groove are the same, and the corresponding central angles of the first limiting groove and the second limiting groove are smaller than 90 degrees, so that the bending angle of the drag chain is limited; The side walls of the first limiting groove and the second limiting groove, which are close to the middle of the end part of the chain plate, are parallel to the central connecting line of the rotating shaft and the positioning hole, and the other side walls of the first limiting groove and the second limiting groove are arranged towards the inner side of the drag chain bending. Furthermore, a clamping groove I is formed in the outer side edge of the end part of the connecting plate I of the connector, the clamping groove I can be matched with a limiting block II on the inner side of the adjacent chain plate, a clamping groove II is formed in the inner side edge of the end part of the connecting plate I of the connector, a