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CN-122015774-A - Ship lift pulley block horizontal detection device and method

CN122015774ACN 122015774 ACN122015774 ACN 122015774ACN-122015774-A

Abstract

A ship lift pulley block horizontal detection device and method mainly comprises a base, wherein a lifting adjusting mechanism is arranged on the base and used for lifting and adjusting a cross arm, at least two groups of dial indicators are arranged on the cross arm, and a detection part at the upper end of the dial indicators is in contact with a flat circular arc surface of a pulley. The device and the method for detecting the pulley block level of the ship lift can improve detection efficiency and reliability.

Inventors

  • ZHENG WEILI
  • WANG YANG
  • HUANG XIAOHUAN
  • GONG XIAOHUI
  • ZHAO YANKUN
  • TAN MING
  • Deng Nanyun
  • YAN XIAOQING
  • LI MING
  • JIANG DONG
  • DENG ZHIQIANG
  • GONG GUOQING

Assignees

  • 长江三峡通航管理局
  • 贵州省乌江航道管理局(贵州省乌江通航管理局)

Dates

Publication Date
20260512
Application Date
20260122

Claims (10)

  1. 1. A ship lift pulley block horizontal detection device is characterized by comprising a base (1), wherein a lifting adjusting mechanism (2) is arranged on the base (1), the lifting adjusting mechanism (2) is used for lifting and adjusting a cross arm (3), at least two groups of dial indicators (4) are arranged on the cross arm (3), a detection part at the upper end of the dial indicators (4) is in contact with a flat circular arc surface of a pulley (5), and a horizontal test tube (7) penetrates through an embedded part (6) and is filled with water.
  2. 2. The ship lift pulley block horizontal detection device according to claim 1, wherein the base (1) comprises a supporting seat (101), and at least three groups of adjusting bolts are circumferentially arranged on the supporting seat (101).
  3. 3. The ship lift pulley block horizontal detection device is characterized in that the adjusting bolt comprises a bolt (104), the bolt (104) freely penetrates through the supporting seat (101), the bolt (104) is located on the supporting seat (101) and is respectively connected with a locking nut (105) and an adjusting nut (106) in a threaded mode, a cushion block (107) is arranged at the bottom of the bolt (104), and the cushion block (107) is made of rubber.
  4. 4. The ship lift pulley block horizontal detection device according to claim 2, wherein the lifting adjusting mechanism (2) comprises a stand column sleeve (203), the stand column sleeve (203) is fixed on the supporting seat (101), a gear shaft (205) is rotatably arranged on the stand column sleeve (203), a gear (204) is arranged on the gear shaft (205), the gear (204) is meshed with the rack (202), the back of the rack (202) slides up and down along a sliding groove (208) through a sliding supporting plate (201), and the sliding groove (208) is located on the inner wall of the stand column sleeve (203) and is arranged in the length direction.
  5. 5. The ship lift pulley block horizontal detection device according to claim 4, wherein a hand wheel is welded at one end of the gear shaft (205), a locking nut (207) is connected to the other end of the gear shaft (205) in a threaded mode, and the locking nut (207) is in friction locking with the side wall of the upright post sleeve (203).
  6. 6. The ship lift pulley block horizontal detection device according to claim 4, wherein the cross arm (3) is fixed on the sliding support plate (201), a T-shaped chute (302) is transversely arranged at the upper end of the cross arm (3), and the sliding block (303) is in sliding fit with the T-shaped chute (302).
  7. 7. The ship lift pulley block horizontal detection device according to claim 6, wherein a row of bolt holes (304) are arranged on the back face of the cross arm (3) at intervals, and locking screws (305) are in threaded connection with the bolt holes (304) and tightly propped against the sliding blocks (303).
  8. 8. The ship lift pulley block horizontal detection device according to claim 7, wherein the number of the sliding blocks (303) is two, the number of the corresponding dial indicators (4) is two, and each group of the dial indicators (4) is correspondingly arranged on one sliding block (303).
  9. 9. The device for detecting the pulley block level of the ship lift according to claim 8, wherein the sliding part of the sliding block (303) is of an inverted T-shaped structure and is matched with the T-shaped sliding groove (302).
  10. 10. The method for detecting levelness by using the ship lift pulley block level detection device according to claim 9, which is characterized by comprising the following steps: The method comprises the steps that firstly, the device is arranged under a pulley (5), and at the moment, a measuring head (401) of the device is at a distance from a flat arc surface of the pulley (5); Step two, unscrewing the locking nut (207), rotating the hand wheel (206), rotating the gear (204), driving the rack (202) to move upwards by the gear (204), and driving the sliding support plate (201) to drive the cross arm (3) to ascend until the measuring head (401) of the dial indicator (4) approaches the arc surface of the pulley (5), and stopping the locking nut (207) to lock the position of the device in the vertical direction; loosening the locking nut (105) of each adjusting bolt, adjusting the positions of the three adjusting nuts (106), observing the level bubble in the level (301) on the cross arm (3), and tightening the locking nut (105) of each adjusting bolt when the whole device is in a horizontal state, so that the whole device is kept in the horizontal state; Step four, the measuring heads (401) of the two dial indicators (4) are aligned with the central line of the arc surface of the pulley (5) by moving the sliding block (303) on the cross arm (3), and the operation of the step two is repeated until the measuring heads (401) of the dial indicators (4) are contacted with the arc surface of the pulley; And fifthly, carrying out zero calibration on the dial indicator (4), then rotating the pulley (5) at a constant speed for one circle, observing synchronous change of pointers of the dial indicator (4), reading the maximum difference value of the dial indicator (4), namely the offset of the pulley (5), and simultaneously, observing the reading difference values of two sides of the horizontal test tube (7) to reflect the horizontal condition of the embedded part (6), thereby repairing the embedded part to eliminate the influence of the abrasion of the embedded part on the levelness of the pulley.

Description

Ship lift pulley block horizontal detection device and method Technical Field The invention relates to the technical field of ship lift operation and maintenance, in particular to a device and a method for detecting the pulley block level of a ship lift. Background The ship lift is used as key equipment of a large-scale hydraulic junction project, and the running state of a pulley block of the ship lift directly influences the stability and safety of ship lifting. In the long-term running process of the pulley block, due to factors such as load change, mechanical abrasion or installation error, levelness deviation can be caused, so that the problems of eccentric abrasion of a steel wire rope, abnormal abrasion of a pulley bearing and the like are caused, and equipment blockage or failure can be caused when the problems are serious. Therefore, the periodic detection of the levelness of the pulley block is important to ensure the reliable operation of the ship lift. At present, the following technical defects mainly exist in the field of ship lift pulley block levelness detection: 1) The traditional detection method mostly adopts single measurement point detection, and the actual horizontal state of the pulley block cannot be comprehensively reflected; 2) The adaptability is poor, most detection devices adopt a fixed structure design, and cannot meet the detection requirements of pulley blocks with different specifications, and particularly in a large ship lift, the applicability of the detection devices is severely limited; 3) The traditional detection device is easy to generate measurement errors in a vibration environment, and an effective locking mechanism is lacked, so that the device is easy to displace in the measurement process; 4) The prior art mainly carries out static detection, cannot detect the horizontal change condition of the pulley block in the running state in real time, and is difficult to find potential safety hazards. Disclosure of Invention The technical problem to be solved by the invention is to provide a device and a method for detecting the level of a pulley block of a ship lift, which effectively solve the problems of insufficient detection precision, poor adaptability, insufficient stability, lack of dynamic detection capability and the like, improve the detection efficiency and reliability and ensure the safe and efficient operation of a ship lift system through structural optimization and functional integration. In order to solve the technical problems, the invention adopts the following technical scheme: A ship lift pulley block horizontal detection device comprises a base, wherein a lifting adjusting mechanism is arranged on the base and used for lifting and adjusting a cross arm, at least two groups of dial indicators are arranged on the cross arm, and a detection part at the upper end of the dial indicators is in contact with a flat arc surface of a pulley. The base comprises a supporting seat, and at least three groups of adjusting bolts are circumferentially arranged on the supporting seat. The adjusting bolt comprises a bolt, the bolt freely penetrates through the supporting seat, the bolt is located on the supporting seat and is connected with a locking nut and an adjusting nut in a threaded mode, a cushion block is arranged at the bottom of the bolt, and the cushion block is made of rubber. The lifting adjusting mechanism comprises a stand column sleeve, the stand column sleeve is fixed on the supporting seat, a gear shaft is rotatably arranged on the stand column sleeve, a gear is arranged on the gear shaft, the gear is meshed with the rack, the back of the rack slides up and down along a sliding groove through a sliding supporting plate, and the sliding groove is positioned on the inner wall of the stand column sleeve and is arranged along the length direction. One end of the gear shaft is welded with a hand wheel, the other end of the gear shaft is connected with a locking nut in a threaded manner, the locking nut is in friction locking with the side wall of the upright post sleeve. The cross arm is fixed on the sliding support plate, a T-shaped chute is transversely arranged at the upper end of the cross arm, and the sliding block is in sliding fit with the T-shaped chute. The back of the cross arm is provided with a row of bolt holes which are arranged at intervals, and the locking screw is in threaded connection with the bolt holes and is tightly propped against the sliding block. The sliding blocks are two groups, the corresponding dial indicators are two groups, and each group of dial indicators is correspondingly arranged on one sliding block. The sliding part of the sliding block is of an inverted T-shaped structure and is matched with the T-shaped sliding groove. A ship lift pulley block level detection method comprises the following steps: arranging the device under a pulley, wherein a measuring head of the device is at a distance from a flat arc surface of t