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CN-121993686-A - Automobile pipe clamp device easy to install

CN121993686ACN 121993686 ACN121993686 ACN 121993686ACN-121993686-A

Abstract

The invention relates to the field of automobile pipe clamps, in particular to an automobile pipe clamp device easy to install. The device comprises an outer ring support and an inner ring chain ring which are coaxial, wherein a clamping module is arranged on the circumference of the inner ring, and the module comprises a mounting seat, a pivoted swing arm, a pipeline contact head with radial linear freedom degree and a coaxial pre-pressing reset spring arranged along the linear direction of the module. The induction execution unit comprises a micro-motor deceleration screw rod push rod and a displacement sensor, wherein the push rod is rigidly connected with the contact head and is subjected to closed-loop adjustment under feedback. The induction execution unit is arranged on one side of the back surface of the ring core, and the outer ring and the inner ring are connected in a floating mode. The structure realizes the multi-point uniform clamping and quick return, gives consideration to installation tolerance and vibration working conditions, can finely adjust clamping force, reduces slippage and indentation, and improves reliability.

Inventors

  • YANG WEIFEI
  • WU FENG

Assignees

  • 宁波摩臣汽车部件有限公司

Dates

Publication Date
20260508
Application Date
20260205

Claims (7)

  1. 1. An easily installed automotive pipe clamping device, comprising: The device comprises an outer ring support (1), an inner ring chain ring (2) coaxially arranged with the outer ring support (1), a plurality of clamping modules (3) circumferentially distributed, each clamping module (3) is fixed on the inner ring chain ring (2) and is arranged towards a ring center, each clamping module (3) comprises a mounting seat (31) fixedly connected with the inner ring chain ring (2), a swinging arm (32) rotationally connected with the mounting seat (31) through a pivot (35), a pipeline contact head (33) arranged at the front end of the swinging arm (32) and a return spring (34) arranged along the linear motion direction of the pipeline contact head (33), the pipeline contact head (33) has a linear motion degree of freedom relative to the swinging arm (32) along the radial direction, the sensing execution unit (4) arranged on the clamping modules (3), the sensing execution unit (4) comprises a driving piece (41) and a sensor (42), wherein the driving piece (41) adopts a miniature motor to form a push rod linear output through speed reduction driving, a screw nut is rigidly connected with the pipeline contact head (33) and enables the pipeline contact head (33) to move along the linear motion direction, the driving piece (41) is used for detecting the linear motion of the push rod (32) along the linear motion direction, and the displacement of the push rod (32) is used for detecting the position displacement of the push rod (32), for returning the swing arm (32).
  2. 2. An easily installed automotive pipe clamping device as claimed in claim 1, characterized in that, The return spring (34) is a coaxial compression spring, is in precompression arrangement, provides continuous pretension for the pipeline contact head (33), and enables the pipeline contact head (33) to return along the linear movement direction when released.
  3. 3. An easily installed automotive pipe clamping device as claimed in claim 2, characterized in that, The sensor (42) provides the detected displacement and end position signals to the induction executing unit (4), and the induction executing unit (4) performs closed-loop control on the displacement and stop position of the driving piece (41) according to the detected displacement and end position signals so as to lift the clamping force of the pipeline contact head (33) and limit the holding position after the contact judgment.
  4. 4. An easily installed automotive pipe clamping device as claimed in claim 3, characterized in that, The screw rod of the driving piece (41) is coaxially arranged with the linear motion direction of the pipeline contact head (33), and the nut is connected with the pipeline contact head (33) through a rigid contact or an integral structure, so that transmission clearance is reduced, and displacement resolution is improved.
  5. 5. An easily installed automotive pipe clamping device as claimed in claim 4, characterized in that, The return spring (34) provides a basic clamping force for the pipe contact (33), and the driving member (41) performs displacement compensation and clamping force gain for the pipe contact (33) on the basis of detection of the sensor (42).
  6. 6. An easily installed automotive pipe clamping device as claimed in claim 5, characterized in that, The induction execution unit (4) is arranged on one side of the mounting seat (31) which is away from the ring center.
  7. 7. An easily installed automotive pipe clamping device as claimed in claim 6, characterized in that, The inner ring chain ring (2) forms micro-displacement degrees of freedom relative to the outer ring support (1) through a floating connection structure, is used for providing compliance when the clamped pipeline is subjected to position deviation, and is used for realizing radial multipoint restraint and self-centering clamping together with the clamping modules (3) distributed in the circumferential direction.

Description

Automobile pipe clamp device easy to install Technical Field The invention relates to the field of automobile pipe clamps, in particular to an automobile pipe clamp device easy to install. Background Liquid or gas pipelines on a vehicle platform are simultaneously affected by vibration, impact, temperature difference and installation error superposition during running. The common belt type hoop, the spring plate type clamp and the simplified swing arm pressing structure generally depend on fixed pre-tightening or manual adjustment to obtain initial clamping force, lack compliance to assembly tolerance, roundness error and thermal expansion and contraction, and under the condition of strong jolt or long-term vibration, the clamping force is insufficient to cause micro-slippage and posture drift of a contact surface or overlarge to locally form high indentation to induce cladding damage, fatigue crack or seal degradation. The structure mainly uses curved surface pressing, a larger lateral component force is mixed in a contact path, the abrasion of a guiding and contact piece is fast, the repeated positioning precision is attenuated along with time, and the maintenance frequency is high. The existing scheme mainly comprises screw tightening or elastic self-clamping, the efficiency of the assembly stage depends on manual experience, the pre-tightening consistency is poor, the operation stage is affected by random vibration and temperature change, the clamping force is untraceable and untriminable, and the 'tightness' fluctuation is easy to occur. On the other hand, many clamp-like structures provide only compression and not explicit linear guidance, with degrees of freedom coupled to the same component, resulting in contact heads that are accompanied by lateral sliding and biasing during approaching the pipe wall, local contact pressures being difficult to control, both increasing wear and amplifying the risk of microslip. The existing part adopts a swing arm type compacting device, although a certain mounting opening can be formed, the swing arm is usually borne by the same elastic element, the reset references of the angle position and the straight line position are not separated, zero drift is obvious during reloading, potential interference hazards exist between the mounting position and the clamping path of the execution unit, and sensing and transmission are easy to fail once collision or dust accumulation occurs in a narrow cabin. More importantly, a plurality of structures are in flexible connection with a contact end or transmit force through a connecting rod with a larger gap, the reverse idle stroke and elastic rebound are difficult to restrain, the control precision in a micro displacement stage is insufficient, and stable holding position and uniform circumferential force are difficult to obtain. Aiming at the situations of tight space and miscellaneous working conditions of a vehicle, the existing clamping system lacks a cooperative design of uniform stress on multiple points in the circumferential direction and radial micro compliance. The rigid fixed single ring or single point press has limited capability in absorbing assembly errors and running displacement, and the overstretching easily concentrates stress on few contact points, while the fully flexible integral spring hoop has the defects of long-term stability and maintainability due to the fact that the contact stroke and the holding position cannot be accurately defined although the assembly is convenient In addition, considering the strong jolt situation of the vehicle under a specific road spectrum, part of the prior art attempts to deal with by fixing an upper limit or simply increasing the power by a threshold, but the difficulty that the vehicle is still insufficient under strong working conditions and is too conservative under weak working conditions easily occurs. Disclosure of Invention The invention aims to provide an automobile pipe clamp device easy to install, so as to solve the technical problems in the background art. Based on the thought, the invention provides the following technical scheme: An automobile pipe clamp device easy to install comprises an outer ring support, an inner ring chain ring coaxially arranged with the outer ring support, a plurality of clamping modules distributed in the circumferential direction, wherein each clamping module is fixed on the inner ring chain ring and is arranged towards an annular center, each clamping module comprises an installation seat fixedly connected with the inner ring chain ring, a swing arm rotatably connected with the installation seat through a pivot, a pipeline contact head arranged at the front end of the swing arm and a return spring arranged along the linear motion direction of the pipeline contact head, the pipeline contact head has linear motion freedom degree along the radial direction relative to the swing arm, and the automobile pipe clamp device further comprises