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CN-120462513-B - Pull rod assembly

CN120462513BCN 120462513 BCN120462513 BCN 120462513BCN-120462513-B

Abstract

The invention discloses a pull rod assembly, which belongs to the technical field of steering systems, and comprises a tie rod, a ball head pull rod and an adjusting assembly, wherein the tie rod and the ball head pull rod are oppositely arranged at two ends, the left end of the tie rod is fixedly arranged, the adjusting assembly comprises a mounting pipe and a movable rod, the left end of the mounting pipe is in threaded connection with the right end of the tie rod, the right end of the movable rod is in threaded connection with the left end of the ball head pull rod, the left end of the movable rod is movably nested in the right end of the mounting pipe so that the movable rod can be axially far away from or close to the mounting pipe, the nesting position of the movable rod and the mounting pipe is fixedly connected through a hoop, the operation steps of the tie rod when a toe-in value is adjusted can be reduced, the disassembly efficiency is improved, the change degree of single distance adjustment is thinned, accurate adjustment can be realized, and the operation is more labor-saving and easy.

Inventors

  • WENG JIAHAO
  • WENG XUHUI
  • Nan Yingqiu

Assignees

  • 台州桑达机械有限公司

Dates

Publication Date
20260512
Application Date
20250611

Claims (8)

  1. 1. The pull rod assembly is characterized by comprising a transverse pull rod (1), a ball head pull rod (2) and an adjusting assembly (3), wherein the transverse pull rod (1) and the ball head pull rod (2) are arranged at two ends in opposite directions, the left end of the transverse pull rod (1) is fixedly arranged, the adjusting assembly (3) comprises a mounting pipe (31) and a movable rod (32), the left end of the mounting pipe (31) is in threaded connection with the right end of the transverse pull rod (1), the right end of the movable rod (32) is in threaded connection with the left end of the ball head pull rod (2), the left end of the movable rod (32) is movably nested in the right end of the mounting pipe (31) so that the movable rod (32) can be axially far away from or close to the mounting pipe (31), and the nested part of the movable rod (32) and the mounting pipe (31) is in fastening connection through a hoop (4); The adjusting assembly (3) further comprises a mounting ring (33), a mounting frame (34), an adjusting plate (36) and an adjusting rod (39), wherein the mounting ring (33) is fixedly nested and arranged on the outer side of the transverse pull rod (1), the mounting ring (33) protrudes outwards in the radial direction, one end of the mounting frame (34) is fixedly connected with the upper side face of the mounting ring (33), the other end of the mounting frame extends along the axial direction of the transverse pull rod (1), a first adjusting gear (37) and a second adjusting gear (38) are respectively and symmetrically arranged on the left side and the right side of the mounting frame (34), an adjusting groove (35) is formed in the mounting frame (34), the adjusting rod (39) is fixedly arranged on the lower side face of the adjusting plate (36), the adjusting rod (39) is embedded in the adjusting groove (35), the lower end of the adjusting rod (39) is fixedly connected with the outer side face of the movable rod (32), an axially-through limiting groove (312) is formed in the surface of the mounting tube (31), an upper rack (361) and a lower rack (362) are respectively arranged at the two ends of the adjusting plate (36), the upper rack (361) is meshed with the first adjusting gear (37), and the lower rack (361) is meshed with the second adjusting gear (38), and the lower rack (361) is meshed with the second adjusting gear (361). The hoop (4) comprises a hoop ring (41), a tightening bolt (42) and a tightening rod (43), the hoop ring (41) comprises an annular tightening part and an extending part, the tightening part is arranged on the outer side of the mounting tube (31) in a surrounding mode, the extending part radially extends along the outer side of the tightening part, the tightening bolt (42) is in threaded connection with the extending part so that the hoop ring (41) can shrink inwards, the tightening rod (43) is fixedly arranged on the side face of the hoop ring (41) and located at the joint of the tightening part and the extending part, the tightening rod (43) comprises two rods which are symmetrically arranged on two sides of the hoop ring (41) respectively, the tightening rod (43) extends into the limiting groove (312), the lower end of the adjusting rod (39) is symmetrically provided with the protecting groove (5), and when the hoop ring (4) is locked, the tightening rod (43) and the protecting groove (5) are mutually clamped, and when the hoop ring (4) is unlocked, the tightening rod (43) is unfolded towards the two sides of the protecting groove (5).
  2. 2. A pull rod assembly according to claim 1, wherein the anchor ear (4) is arranged at the outermost side of the mounting tube (31), and the extension of the anchor ear ring (41) extends upwards to a height not exceeding the lower side of the mounting frame (34).
  3. 3. A pull rod assembly according to claim 1 is characterized in that a first mounting hole (11) is formed in a right port of a tie rod (1), internal threads are formed in the first mounting hole (11), a first threaded rod (311) is fixedly arranged on the left side of a mounting pipe (31), the first threaded rod (311) is provided with external threads, and the first mounting hole (11) is in threaded connection with the first threaded rod (311).
  4. 4. The pull rod assembly according to claim 1, wherein the left end opening of the ball head pull rod (2) is provided with a second mounting hole (21), an inner thread is arranged in the second mounting hole (21), the right side of the movable rod (32) is fixedly provided with a second threaded rod (321), the second threaded rod (321) is provided with an outer thread, and the second mounting hole (21) is in threaded connection with the second threaded rod (321).
  5. 5. A tie rod assembly according to claim 1, wherein the center lines of the tie rod (1), the ball head tie rod (2) and the adjusting component (3) are collinear, and the center of the ball head tie rod (2) is located on the center line.
  6. 6. A pull rod assembly according to claim 1, wherein the two sides of the mounting frame (34) extend upwards respectively, and the upper rack (361) and the lower rack (362) are respectively abutted against the side walls of the mounting frame (34).
  7. 7. The pull rod assembly according to claim 1, further comprising a sealing cover (6), wherein the sealing cover (6) is fixedly arranged on the upper side face of the mounting frame (34), a through moving groove (61) is formed in the sealing cover (6), the moving groove (61) is located right above the adjusting groove (35), the moving groove (61) and the adjusting groove (35) are located on the same straight line, and the upper end of the adjusting rod (39) is in mutual abutting connection with the side wall of the moving groove (61).
  8. 8. A pull rod assembly according to claim 7, wherein zero graduation marks are provided at the center of the cover (6), positive graduation marks being provided on the right side of the moving groove (61), and negative graduation marks being provided on the left side of the moving groove (61).

Description

Pull rod assembly Technical Field The invention belongs to the technical field of steering systems, and particularly relates to a pull rod assembly. Background The tie rod is used as an important part of a vehicle steering system and is connected with left and right steering arms, the action of the tie rod can synchronize two wheels and synchronously align toe-in, and the tail end of the tie rod is required to be connected with a steering knuckle through a ball joint. The existing tie rod and the ball head tie rod are connected through threads, when the ball head tie rod is replaced, the length of the newly replaced ball head tie rod is not necessarily the same as that of the original ball head tie rod, the ball head tie rod moves, the distance between the ball head tie rod and the tie rod needs to be adjusted to adjust the toe-in value of the front wheel, namely the distance between the ball head tie rod and the tie rod; the integral steering tie rod assembly disclosed in the patent document with the application number of CN201710769365.4 (the application date is 2017 and the date is 08 and 31), the front beam modulator is arranged, the screw rotation directions of two ends of the tie rod of the integral steering tie rod assembly are the same, one end of the tie rod is fixed with a ball pin seat and is not changed after being installed, the other end of the tie rod is connected with the ball pin seat through the front beam modulator, the integral steering tie rod assembly structure is simplified, the weight is reduced, the front beam adjustment is easy, quick and convenient, but at least the following defects are that 1, when the front beam is adjusted, a large locking nut and a small locking nut are needed to be loosened firstly, then a spanner is clamped on a hexagon of the front beam modulator, the front beam value is adjusted through rotating the front beam modulator, a plurality of nuts are needed to be screwed or unscrewed for each adjustment, meanwhile, the situation that the spanner is blocked by other parts can be possibly met, and the disassembly efficiency is seriously influenced, and 2, when the front beam modulator is adjusted, the distance between ball pins is changed in multiple times, the single change of the distance is relatively large, and the distance is difficult to adjust. Disclosure of Invention The technical problem to be solved by the invention is to provide the pull rod assembly, which can reduce the operation steps of the pull rod when the toe-in value is adjusted, improve the disassembly efficiency, refine the change degree of single distance adjustment, realize accurate adjustment and ensure that the operation is more labor-saving and easier. The invention discloses a pull rod assembly which comprises a transverse pull rod, a ball head pull rod and an adjusting assembly, wherein the transverse pull rod and the ball head pull rod are oppositely arranged at two ends, the left end of the transverse pull rod is fixedly arranged, the adjusting assembly comprises a mounting pipe and a movable rod, the left end of the mounting pipe is in threaded connection with the right end of the transverse pull rod, the right end of the movable rod is in threaded connection with the left end of the ball head pull rod, the left end of the movable rod is movably nested in the right end of the mounting pipe so that the movable rod can axially move away from or approach the mounting pipe, and the nested part of the movable rod and the mounting pipe is fixedly connected through a hoop. The adjusting assembly further comprises a mounting ring, a mounting frame, an adjusting plate and an adjusting rod, wherein the mounting ring is fixedly nested on the outer side of the transverse pull rod, the mounting ring protrudes outwards in the radial direction, one end of the mounting frame is fixedly connected with the upper side face of the mounting ring, the other end of the mounting frame extends along the axial direction of the transverse pull rod, a first adjusting gear and a second adjusting gear are respectively and symmetrically arranged on the left side and the right side of the mounting frame in sequence, an adjusting groove is formed in the mounting frame, the adjusting rod is fixedly arranged on the lower side face of the adjusting plate, the adjusting rod is embedded in the adjusting groove, the lower end of the adjusting rod is fixedly connected with the outer side face of the movable rod, an axially-through limiting groove is formed in the surface of the mounting tube, an upper rack and a lower rack are respectively arranged at the two ends of the adjusting plate, the upper rack is meshed with the first adjusting gear to rotate, and the lower rack is meshed with the second adjusting gear to rotate. The hoop comprises a hoop ring, a hoop bolt and a hoop rod, wherein the hoop ring comprises an annular hoop part and an extending part, the hoop part is arranged on the outer side of an installation tube