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CN-224214528-U - Diameter-expandable nylon rod pin and nylon rod pin coupler

CN224214528UCN 224214528 UCN224214528 UCN 224214528UCN-224214528-U

Abstract

The application provides a nylon rod pin with an expandable diameter, which comprises a nylon rod body, a high-strength countersunk bolt, a countersunk nut and a countersunk nut, wherein the axial center of the nylon rod body is provided with a through hole, the high-strength countersunk bolt comprises a countersunk head end and a screw rod part, the diameter of the countersunk head end is larger than the aperture of the through hole and is embedded into a counter bore at one end of the nylon rod body, the screw rod part penetrates through the through hole, the countersunk nut comprises a countersunk head groove, the countersunk nut is in threaded connection with the tail end of the screw rod part, the outer surface of the tail end of the countersunk nut is coplanar with the end face of the nylon rod body far away from the high-strength countersunk head bolt, and the diameter of the nylon rod pin can expand or shrink within a certain range, so that the integral connection strength is improved, and the nylon rod pin is suitable for different assembly size requirements.

Inventors

  • SONG ZHONGLIANG
  • TIAN QIAN
  • ZHANG JUN
  • BAO BIN
  • PAN CHENGLONG
  • XU MAO
  • Zhao Tongxuan

Assignees

  • 兖矿能源集团股份有限公司

Dates

Publication Date
20260508
Application Date
20250630

Claims (10)

  1. 1. A nylon rod pin with expandable diameter, characterized by comprising the following steps: the nylon rod comprises a nylon rod body (1), wherein a through hole (11) is formed in the axial center of the nylon rod body (1); the high-strength countersunk head bolt (2), the high-strength countersunk head bolt (2) comprises a countersunk head end (21) and a screw rod part (22), the diameter of the countersunk head end (21) is larger than the aperture of the through hole (11) and is embedded into a counter bore (12) at one end of the nylon rod body (1), and the screw rod part (22) penetrates through the through hole (11); the countersunk head nut (3) comprises a countersunk head groove (31), the countersunk head nut (3) is in threaded connection with the tail end of the screw rod part (22), and the outer surface of the tail end of the countersunk head nut (3) is coplanar with the end face of the nylon rod body (1) far away from one end of the high-strength countersunk head bolt (2).
  2. 2. Nylon rod pin according to claim 1, characterized in that the diameter of the through hole (11) is 1/2 of the diameter of the nylon rod body (1).
  3. 3. Nylon rod pin according to claim 1, characterized in that the high-strength countersunk bolt (2) has a diameter smaller than the diameter of the through hole (11).
  4. 4. The nylon rod pin according to claim 1, wherein the diameter of the countersunk end (21) of the high-strength countersunk bolt (2) is 2/3 of the diameter of the nylon rod body (1).
  5. 5. Nylon rod pin according to claim 4, characterized in that hexagonal holes are provided in the countersunk end (21) of the high strength countersunk bolt (2).
  6. 6. Nylon rod pin according to claim 1, characterized in that a belleville spring (32) is arranged between the countersunk head nut (3) and the nylon rod body (1), and the belleville spring (32) is sleeved on the screw portion (22).
  7. 7. Nylon rod pin according to claim 1, characterized in that the outer surface of the nylon rod body (1) is provided with an elastic buffer layer (13).
  8. 8. Nylon rod pin according to claim 1, characterized in that the inner wall of the countersunk recess (31) of the countersunk nut (3) is provided with an annular self-locking groove (33), and the end of the screw part (22) is provided with a radial elastic protrusion (34).
  9. 9. A nylon rod pin coupling comprising the nylon rod pin of any one of claims 1-8; The wheel assembly (4) is provided with a ring-shaped array of wheel coupling holes (40); the nylon rod pin is penetrated into the pair of wheel connecting holes (40); And the baffle assembly (5) is fixed on the outer end face of the pair of wheel assemblies (4) through a fastener.
  10. 10. The coupling according to claim 9, wherein the wheel assembly (4) is formed by joining a first half coupling (41) and a second half coupling (42) which are symmetrically arranged, and the wheel coupling holes (40) are circumferentially distributed on the joining surface; The baffle assembly (5) comprises nylon rod baffles (51) and fastening bolts (52) uniformly distributed in the circumferential direction, and the fastening bolts (52) penetrate through the nylon rod baffles (51) and are in threaded connection with the first half coupling (41) and the second half coupling (42).

Description

Diameter-expandable nylon rod pin and nylon rod pin coupler Technical Field The application relates to the technical field of transmission structural members, in particular to a nylon rod pin with an expandable diameter. Background The HL type elastic pin coupler is used as a key component in a mechanical transmission system, is widely applied to various mechanical equipment, and is mainly used for connecting two shafts and transmitting torque. One of the core components is a nylon rod pin, and the nylon rod pin penetrates into the wheel coupling hole to realize the reliable connection of the two half couplings. The nylon rod pin adopts a solid cylinder structure, has excellent elasticity and wear resistance, and can effectively absorb impact load and vibration energy generated in the transmission process. The nylon rod pin is fixedly arranged on the outer end face of the half coupling through the nylon rod baffle plate, so that the structural stability and reliability in the transmission process are ensured. However, as mechanical devices develop to high power and high rotational speeds, existing nylon bar pin structures gradually expose some technical problems. At the moment of starting the equipment, the nylon rod pin is easy to break due to insufficient strength because of bearing larger instantaneous impact load, so that the connecting part is invalid, and the normal operation of the equipment is seriously influenced. Disclosure of utility model The embodiment of the application provides a nylon rod pin with an expandable diameter, which aims to solve the problem that the nylon rod pin is easy to break at the starting moment due to insufficient strength in a high-power and high-rotation-speed mechanical transmission system. The embodiment of the application provides a nylon rod pin with an expandable diameter, which comprises a nylon rod body, wherein a through hole is formed in the axial center of the nylon rod body; The high-strength countersunk head bolt comprises a countersunk head end and a screw rod part, wherein the diameter of the countersunk head end is larger than the aperture of the through hole and is embedded into a counter bore at one end of the nylon rod body, and the screw rod part penetrates through the through hole; The countersunk head nut comprises a countersunk head groove, the countersunk head nut is in threaded connection with the tail end of the screw rod part, and the outer surface of the tail end of the countersunk head nut is coplanar with the end face of the nylon rod body, which is far away from the high-strength countersunk head bolt. In one possible implementation, the diameter of the through hole is 1/2 of the diameter of the nylon rod body. In one possible implementation, the high strength countersunk head bolts have a diameter smaller than the diameter of the through hole. In one possible implementation, the countersunk end diameter of the high-strength countersunk head bolt is 2/3 of the diameter of the nylon rod body. In one possible implementation manner, a hexagonal hole is formed in the countersunk head end of the high-strength countersunk head bolt. In one possible implementation, a belleville spring is arranged between the countersunk head nut and the nylon rod body, and the belleville spring is sleeved on the screw rod portion. In one possible implementation, the nylon rod body is provided with an elastic buffer layer on the outer surface. In one possible implementation manner, an annular self-locking groove is formed in the inner wall of the countersunk groove of the countersunk nut, and a radial elastic bulge is formed at the tail end of the screw rod part. A nylon rod pin coupling comprises a nylon rod pin; the wheel assembly is provided with a ring-shaped array of wheel coupling holes; the nylon rod pin is arranged in the pair of wheel connecting holes in a penetrating way; And the baffle plate assembly is fixed on the outer end surface of the pair of wheel assemblies through a fastener. In a feasible implementation manner, the wheel alignment assembly is formed by symmetrically arranging a first half coupling and a second half coupling in an alignment manner, and the wheel alignment coupling holes are circumferentially distributed on the alignment surface; The baffle assembly comprises nylon rod baffles and fastening bolts uniformly distributed in the circumferential direction, and the fastening bolts penetrate through the nylon rod baffles and are in threaded connection with the first half coupling and the second half coupling. According to the nylon rod pin with the expandable diameter, through the design of the high-strength countersunk head bolt and the countersunk head nut, the fastening force between the nylon rod pin and the coupler after installation can be ensured, and therefore the overall connection strength is improved. The nylon rod pin is provided with the through hole and is fixed through the high-strength countersunk head bolt and the nut,