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CN-122016526-A - Rope belt fixing accessory and rope belt bending fatigue testing machine

CN122016526ACN 122016526 ACN122016526 ACN 122016526ACN-122016526-A

Abstract

The invention discloses a rope belt fixing accessory and a rope belt bending fatigue testing machine, which comprise a connecting block, a sliding seat, sliding blocks, springs and clamping structures, wherein the rear end of the connecting block is used for being connected with the testing machine, the front end of the connecting block is connected with the rear end of the sliding seat, the sliding blocks capable of sliding forwards and backwards are inserted into the sliding seat, the sliding blocks can extend out of the front end of the sliding seat, an installation cavity is formed in the sliding blocks, an opening communicated with the inside of the sliding seat is formed in the rear side of the installation cavity, the springs arranged along the front-rear direction are connected between the inside of the sliding seat and the installation cavity, the springs are used for restraining the sliding blocks to extend forwards out of the sliding seat, and the front ends of the sliding blocks are connected with the clamping structures used for clamping the ends of tested rope belts. The invention solves the problem that the common crank rocker bending fatigue testing machine can generate additional tensile stress during the test, so as to influence the measurement precision.

Inventors

  • FENG YONG
  • ZHANG MIN
  • GAO CHAO
  • ZHENG LEI
  • LI GONGNING
  • YE LIANG

Assignees

  • 苏州工学院

Dates

Publication Date
20260512
Application Date
20260130

Claims (10)

  1. 1. The rope belt fixing accessory is characterized by comprising a connecting block (1), a sliding seat (4), a sliding block (5), a spring (8) and a clamping structure (6), wherein the rear end of the connecting block (1) is used for being connected with a testing machine (11), the front end of the connecting block (1) is connected with the rear end of the sliding seat (4), the sliding block (5) capable of sliding forwards and backwards is inserted into the sliding seat (4), the sliding block (5) can extend out of the front end of the sliding seat (4), an installation cavity is formed in the sliding block (5), an opening communicated with the inside of the sliding seat (4) is formed in the rear side of the installation cavity, the spring (8) arranged along the front-rear direction is connected between the inside of the sliding seat (4) and the installation cavity, the spring (8) is used for restraining the sliding block (5) to extend forwards, and the front end of the sliding block (5) is connected with the clamping structure (6) used for clamping the end of a testing rope belt (10).
  2. 2. The rope belt fixing accessory according to claim 1, wherein the connecting block (1) is of an I-shaped structure, the rear side edge of the I-shaped connecting block (1) is provided with a mounting hole penetrating along the left and right directions of a flange, the mounting hole is used for being connected with a testing machine (11), penetrating holes penetrating front and back are respectively formed in the left side and right sides of the middle web on the front side flange of the connecting block (1), adjusting nuts (2) coaxial with the penetrating holes are rotatably arranged at the penetrating holes, two adjusting screws (3) are arranged at the end parts, close to the connecting block (1), of the sliding seat (4) along the front and back directions, of the two adjusting screws (3) respectively penetrate through one penetrating hole in a movable mode, and are in threaded connection with the corresponding adjusting nuts (2).
  3. 3. The rope belt fixing accessory according to claim 1, wherein the side wall of the sliding seat (4) is provided with a sliding groove (7) which is internally and externally communicated and is arranged along the front-rear direction, scales are arranged on the side wall of the sliding seat (4) along the sliding groove (7), the side wall of the sliding block (5) is provided with a pointer slider (9) corresponding to the sliding groove (7), the pointer slider (9) is arranged in the sliding groove (7) in a sliding manner, and a pointer is arranged at the end part of the pointer slider (9) extending out of the sliding groove (7).
  4. 4. The rope belt fixing accessory according to claim 1, wherein the clamping structure (6) comprises a fixing plate and a mounting plate, the front end of the sliding block (5) is fixedly connected with the fixing plate, two rows of screw holes which are arranged in parallel along the front-back direction are arrayed on the fixing plate, butt joint holes are formed in the mounting plate corresponding to the screw holes, and the mounting plate and the fixing plate are connected through the butt joint holes through bolts and are connected with the screw holes through threads.
  5. 5. A rope belt fastening accessory as claimed in claim 4, wherein the upper end of the fastening plate is provided with a recess in the front-rear direction for receiving the end of the test rope belt (10).
  6. 6. A rope belt fixing accessory as claimed in claim 5, wherein the lower end of the mounting plate is provided with a limit groove in the front-rear direction corresponding to the groove, and the maximum distance between the limit groove and the groove is smaller than the diameter of the test rope belt (10) when the fixing plate and the mounting plate are covered.
  7. 7. A rope belt bending fatigue testing machine is characterized in that the testing machine (11) comprises a base (111), a mounting rod (112), a first connecting rod (113), a second connecting rod (114), a driving motor (116), a mounting frame (118) and a test wheel (119), wherein the driving motor (116) is mounted on the base (111), a vertical driving wheel disc (117) is arranged on an output shaft of the driving motor (116), a vertical mounting rod (112) is arranged on one side, located in the radial direction, of the driving wheel disc (117) on the base (111), of the base (111), one end of the first connecting rod (113) is hinged to the upper end of the mounting rod (112), two groups of connecting pieces (115) are hinged to the other end of the first connecting rod (113), one end of the second connecting rod (114) is hinged to the middle section of the first connecting rod (113), the other end of the second connecting rod (114) is hinged to the end face, located in the radial direction, of the driving wheel disc (117) is offset from the center, and two test wheels (118) are mounted on the other side, located in the radial direction, of the driving wheel disc (117) on the base (111), and the two mounting frames (118) are distributed in a staggered mode.
  8. 8. The rope bending fatigue testing machine according to claim 7, further comprising a guide wheel (120), wherein the guide wheel (120) is rotatably mounted on the mounting frame (118) and located between the two test wheels (119).
  9. 9. The rope bending fatigue testing machine according to claim 7, wherein two mounting frames (118) are provided, and the two mounting frames (118) are respectively arranged at two axial sides of the test wheel (119).
  10. 10. The rope bending fatigue testing machine according to claim 7, wherein each group of connecting pieces (115) comprises two connecting plates and a connecting shaft, a hinge post is arranged at the end part of the first connecting rod (113), one ends of the two connecting plates of each group of connecting pieces (115) are respectively hinged to two sides of the hinge post, the other ends of the two connecting plates are connected with the connecting shafts, the rear end of the connecting block (1) is provided with a mounting hole, and the connecting shafts are rotatably arranged in the mounting holes of the connecting block (1).

Description

Rope belt fixing accessory and rope belt bending fatigue testing machine Technical Field The invention relates to the technical field of rope belt bending fatigue tests, in particular to a rope belt fixing accessory and a rope belt bending fatigue testing machine. Background At present, an elevator steel wire rope bending fatigue testing machine or a steel belt bending fatigue testing machine is commonly used for testing fatigue of ropes or test belts. The bending fatigue testing machine has the testing principle that a certain tensile force is provided for a steel wire rope or a steel belt applied to the elevator, repeated bending under the load of the elevator is simulated, so that the fatigue life detection is completed, and the high working frequency is required, so that the bending fatigue testing machine is closer to the actual scene of the elevator application. As shown in figure 8, the common crank-rocker bending fatigue testing machine has lower cost and wide application, and the main principle is that the two ends of a test rope or a test belt are respectively fixed by the rocker ends of the crank-rocker mechanism on the machine to form a closed loop, the test rope or the test belt of the closed loop correspondingly bypasses a certain number of guide wheels and test wheels, and during the test, the rocking rod of the crank-rocker mechanism is driven by a motor to swing, so that the test rope or the test belt of the closed loop is driven to slide around the guide wheels and the test wheels to finish the test. However, the swinging track of the rocker is an arc, but not along the direction of a closed loop, so that the length of the closed loop theoretically changes in the swinging process, so that larger tensile stress is generated, namely, the rope belt is pulled and pressed at high frequency in the test, for example, 60 times/min, which is not in line with the actual running condition of the elevator steel wire rope, and does not meet the requirement that the testing machine in national standards is attached to the actual working condition as much as possible, and therefore, the generated tensile stress seriously influences the measurement precision. Therefore, there is a need for a strap-fixing accessory and strap bending fatigue testing machine, which solve the problem that the conventional crank-rocker bending fatigue testing machine can generate additional tensile stress during testing, so that the measurement accuracy is affected. Disclosure of Invention Aiming at the defects in the prior art, the invention provides a rope belt fixing accessory and a rope belt bending fatigue testing machine, so as to solve the problem that the common crank rocker bending fatigue testing machine can generate additional tensile stress during testing, so that the measurement accuracy is influenced. In order to achieve the above purpose, the present invention adopts the following technical scheme: The rope belt fixing accessory is characterized by comprising a connecting block, a sliding seat, a sliding block, a spring and a clamping structure, wherein the rear end of the connecting block is used for being connected with a testing machine, the front end of the connecting block is connected with the rear end of the sliding seat, the sliding block capable of sliding forwards and backwards is inserted into the sliding seat, the sliding block can extend out of the front end of the sliding seat, an installation cavity is formed in the sliding block, an opening communicated with the inside of the sliding seat is formed in the rear side of the installation cavity, the spring arranged along the front-rear direction is connected between the inside of the sliding seat and the installation cavity and used for constraining the sliding block to extend forwards out of the sliding seat, and the front end of the sliding block is connected with the clamping structure used for clamping the end part of a testing rope belt. In order to optimize the technical scheme, the specific measures adopted further comprise: Further, the connecting block is "worker" style of calligraphy structure, the rear flank reason of "worker" style of calligraphy connecting block is equipped with the mounting hole that link up along the edge of a wing left and right directions, the mounting hole is used for being connected with the testing machine, on the front side edge of a wing of connecting block, and the perforation that link up around being located the left and right sides of middle web respectively has been seted up, the rear side of connecting block front side edge of a wing, and be located perforation department rotation install with perforation coaxial adjusting nut, the tip that the sliding seat is close to the connecting block is equipped with two adjusting screw along the fore-and-aft direction, two adjusting screw activity run through a perforation respectively, and with corresponding adjusting nut threaded connection. Further, the sliding