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CN-224202744-U - Fixing device for engine detection

CN224202744UCN 224202744 UCN224202744 UCN 224202744UCN-224202744-U

Abstract

The utility model belongs to the technical field of overhauling of engine cylinders of railway locomotives and discloses a fixing device for engine detection, which comprises a frame, a base platform, a pneumatic locking mechanism and a limiting cylinder, wherein the base platform is positioned above the frame, the pneumatic locking mechanism comprises an air cylinder, the air cylinder is arranged at the bottom of the base platform, a connecting plate is arranged on a piston rod of the air cylinder, the connecting plate is movably arranged in the base platform, a profiling clamp is arranged on an extending part of the connecting plate, a pressure sensor is arranged in the profiling clamp, a polyurethane buffer cushion is arranged at the inner side of the profiling clamp, the damping component comprises a rubber-metal composite vibration isolation layer, a connecting seat is arranged at the bottom of the rubber-metal composite vibration isolation layer, a hydraulic damper is arranged at the bottom of the connecting seat, and the limiting cylinder is arranged at the bottom of the connecting seat. The utility model not only is convenient for clamping and locking the engine cylinder, but also can avoid the deformation of the thin-wall cylinder, and can buffer and absorb vibration impact so as to prevent the surface of the cylinder from being scratched in the disassembly process.

Inventors

  • JIN HAI

Assignees

  • 河南润华通用装备有限公司

Dates

Publication Date
20260505
Application Date
20250520

Claims (7)

  1. 1. A fixing device for engine detection is characterized by comprising: The device comprises a rack (1), wherein a fixing frame (101) is arranged at the top of the rack (1); The base platform (2) is positioned above the frame (1); the pneumatic locking mechanism comprises four groups of cylinders (3) which are distributed in a cross shape, the cylinders (3) are arranged at the bottom of the base platform (2), a connecting plate (4) is arranged on a piston rod of each cylinder (3), the connecting plate (4) is movably arranged in the base platform (2), a profiling clamp (5) is arranged on an extending part, a pressure sensor (6) is arranged in the profiling clamp (5), and a polyurethane buffer cushion (7) is arranged on the inner side of the profiling clamp (5); The damping component comprises a rubber-metal composite vibration isolation layer (8) arranged on the bottom of the base platform (2), a connecting seat (9) is arranged at the bottom of the rubber-metal composite vibration isolation layer (8), a hydraulic damper (10) is arranged at the bottom of the connecting seat (9), and the hydraulic damper (10) is arranged on the frame (1); The limiting cylinder (11), the limiting cylinder (11) is installed on the frame (1), and covers the damping component, the outer surface of the limiting cylinder (11) is movably sleeved with the base platform (2).
  2. 2. The fixing device for detecting the engine according to claim 1, wherein the base platform (2) is provided with sliding grooves (202) respectively corresponding to the connecting plates (4), and the sliding grooves (202) are matched with the connecting plates (4).
  3. 3. The fixing device for detecting an engine according to claim 2, wherein grooves (203) are symmetrically formed on both sides of the sliding groove (202), protruding blocks (401) corresponding to the grooves (203) are mounted on the connecting plate (4), the protruding blocks (401) are matched with the grooves (203), and the connecting plate (4) is slidably mounted on the base platform (2) through the protruding blocks (401), the sliding groove (202) and the grooves (203).
  4. 4. The fixing device for detecting the engine according to claim 1, wherein the bottom of the base platform (2) is provided with a plurality of integrally formed arc plates (201), the outer surface of the limiting cylinder (11) is provided with limiting edges (1102) which are integrally formed and respectively correspond to the arc plates (201), the arc plates (201) are sleeved on the outer surface of the limiting cylinder (11) when the fixing device is in moving, and the bottom of the arc plates (201) is in blocking contact with the top of the limiting edges (1102).
  5. 5. The fixing device for detecting the engine according to claim 4, wherein the top of the limiting cylinder (11) is provided with a relief groove (1101) corresponding to the air cylinder (3), and the height of the limiting edge (1102) is higher than the height of the bottom wall of the inner cavity of the relief groove (1101).
  6. 6. The fixing device for engine detection according to claim 1, wherein a detachable laser cross positioner (12) is mounted at the bottom of the fixing frame (101), the laser cross positioner (12) is located above the base platform (2), and the axis of the laser cross positioner (12) is overlapped with the axis of the base platform (2).
  7. 7. The engine detection fixture according to any one of claims 1 to 6, wherein a PLC controller (13) for controlling the cylinder (3), the pressure sensor (6) and the laser cross positioner (12) is mounted on the frame (1).

Description

Fixing device for engine detection Technical Field The utility model relates to the technical field of overhauling of engine cylinders of railway locomotives, in particular to a fixing device for engine detection. Background The fixing device for the engine detection is special equipment for stably fixing the engine in the testing or maintenance process, and has the core functions of ensuring that the engine is accurately positioned in the detection process and avoiding interference to a test result due to factors such as vibration, displacement and the like. At present, when an engine cylinder of a railway locomotive is overhauled, a simple bracket or a manual lifting mode is adopted for fixing, but the traditional fixing device has the following defects: 1) The existing clamp is mainly locked rigidly, so that the thin-wall cylinder is easy to deform; 2) The shock absorption performance is insufficient, and the surface of the cylinder is easy to scratch in the disassembly process, so that the fixing device for detecting the engine is provided. Disclosure of utility model The utility model is provided for solving the problems that the prior fixture is mainly rigidly locked, the deformation and the insufficient damping performance of a thin-wall cylinder are easily caused, and the surface of the cylinder is easily scratched in the disassembly process. Therefore, the utility model aims to provide the fixing device for engine detection, which aims to conveniently clamp and lock an engine cylinder by arranging the pneumatic locking mechanism and the damping component, avoid deformation of a thin-wall cylinder, and buffer and absorb vibration impact so as to prevent the surface of the cylinder from being scratched in the disassembly process. In order to solve the technical problems, the utility model provides the following technical scheme: the fixing device for engine detection comprises a rack, wherein a fixing frame is arranged at the top of the rack; The base platform is positioned above the frame; The pneumatic locking mechanism comprises four groups of cylinders which are distributed in a cross shape, the cylinders are arranged at the bottom of the base platform, a connecting plate is arranged on a piston rod of each cylinder, the connecting plate is movably arranged in the base platform, a profiling clamp is arranged on an extending part of each connecting plate, a pressure sensor is arranged in each profiling clamp, and a polyurethane buffer cushion is arranged on the inner side of each profiling clamp; The damping component comprises a rubber-metal composite vibration isolation layer arranged on the bottom of the base platform, a connecting seat is arranged at the bottom of the rubber-metal composite vibration isolation layer, a hydraulic damper is arranged at the bottom of the connecting seat, and the hydraulic damper is arranged on the frame; The limiting cylinder is arranged on the frame and covers the damping component, and the outer surface of the limiting cylinder is movably sleeved with the base platform. The technical scheme of the fixing device for engine detection is that the base platform is provided with the sliding grooves respectively corresponding to the connecting plates, and the sliding grooves are matched with the connecting plates. The technical scheme of the fixing device for engine detection is that grooves are symmetrically formed in two sides of a sliding groove, protruding blocks corresponding to the grooves are mounted on a connecting plate, the protruding blocks are matched with the grooves, and the connecting plate is mounted on a base platform in a sliding mode through the protruding blocks, the sliding groove and the grooves. The technical scheme of the fixing device for engine detection is that the bottom of the base platform is provided with a plurality of arc plates which are integrally formed, the outer surface of the limiting cylinder is provided with limiting edges which are integrally formed and respectively correspond to the arc plates, when the fixing device is in a moving period, the arc plates are sleeved on the outer surface of the limiting cylinder, and the bottom of the arc plates are in blocking contact with the top of the limiting edges. The technical scheme of the fixing device for engine detection is that the top of the limiting cylinder is provided with the abdication grooves respectively corresponding to the air cylinders, and the height of the limiting edge is higher than the height of the bottom wall of the inner cavity of the abdication groove. The technical scheme of the fixing device for engine detection is that a detachable laser cross positioner is arranged at the bottom of a fixing frame, the laser cross positioner is located above a base platform, and the axis of the laser cross positioner is overlapped with the axis of the base platform. The technical scheme of the fixing device for engine detection is that a PLC (programmable logic controller)