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CN-224229143-U - Spring with mechanical overload protection mechanism

CN224229143UCN 224229143 UCN224229143 UCN 224229143UCN-224229143-U

Abstract

The utility model relates to the technical field of springs, and discloses a spring with a mechanical overload protection mechanism, which comprises a sleeve, wherein a fixed ring is sleeved on the outer surface of the sleeve, a movable ring is sleeved on the outer surface of the sleeve in a sliding manner, an overload protection device is arranged in the sleeve, the overload protection device comprises a first fixed rod, the first fixed rod is fixedly connected to the lower surface of the movable ring, the lower end of the first fixed rod is fixedly connected with a disc, the upper surface of the disc is fixedly connected with a fixed rod, the fixed rod is sleeved on the inner surface of the sleeve in a sliding manner, the upper end of the fixed rod is fixedly connected with a first piston, the first piston is sleeved on the inner surface of the sleeve in a sliding manner, the spring with the mechanical overload protection mechanism can limit the spring after the spring is stretched to a certain length, the spring is prevented from being stressed too much due to overlong, the spring can be effectively protected after the spring is prevented from being stretched too fast, and deformation and damage caused by deformation can be prevented.

Inventors

  • WU GUANGYUE
  • WU LIGUANG
  • YUAN JUNXIANG
  • WU GUANGHUI

Assignees

  • 郑州市聚力弹簧制造有限公司

Dates

Publication Date
20260512
Application Date
20250516

Claims (7)

  1. 1. The spring with the mechanical overload protection mechanism comprises a sleeve (1) and is characterized in that two ends of the outer surface of the sleeve (1) are fixedly sleeved with fixed rings (2), two ends of the inner wall of the sleeve (1) are fixedly connected with limiting rings (7), two ends of the outer surface of the sleeve (1) are correspondingly and uniformly sleeved with movable rings (3) in a sliding mode, and buffer devices are arranged on the two movable rings (3); wherein, be provided with overload protection device between two buffer.
  2. 2. A spring with a mechanical overload protection mechanism according to claim 1, wherein the buffer device comprises four first fixing rods (4), the four first fixing rods (4) are fixedly arranged on the surface of the movable ring (3) close to one end of the fixed ring (2) at equal distances, and a disc (5) is fixedly connected to one end, far away from the movable ring (3), of the four first fixing rods (4).
  3. 3. The spring with the mechanical overload protection mechanism according to claim 2, wherein the upper surface of the disc (5) is fixedly connected with a fixed rod (6), and the fixed rod (6) is sleeved on the inner surface of the sleeve (1) in a sliding way; The upper end of the fixed rod (6) is fixedly connected with a first piston (8), and the first piston (8) is slidably sleeved on the inner surface of the sleeve (1).
  4. 4. A spring with a mechanical overload protection mechanism according to claim 3 is characterized in that the upper surface of the first piston (8) is fixedly connected with a spring (9), the upper surface of the spring (9) is fixedly connected with a second piston (10), and the second piston (10) is slidably sleeved on the inner surface of the sleeve (1).
  5. 5. A spring with a mechanical overload protection mechanism according to claim 4, wherein the overload protection device comprises two fixed blocks (11), the two fixed blocks (11) are correspondingly and fixedly arranged on the corresponding ends of the two second pistons (10), the corresponding ends of the two fixed blocks (11) are respectively and rotatably connected with two supporting rods (12), and the corresponding ends of the two supporting rods (12) are rotatably connected with two sliding blocks (13).
  6. 6. A spring with a mechanical overload protection mechanism according to claim 5, characterised in that the inner surfaces of the two sliding blocks (13) are slidably sleeved with a second fixing rod (14), and the second fixing rod (14) is fixedly arranged on the inner wall of the sleeve (1).
  7. 7. A spring with a mechanical overload protection mechanism according to claim 1, wherein the two said damping means are identical in construction and are arranged in mirror image.

Description

Spring with mechanical overload protection mechanism Technical Field The utility model relates to the technical field of springs, in particular to a spring with a mechanical overload protection mechanism. Background A spring is a mechanical part that works with elasticity. Parts made of elastic material being deformed by external force and returning to its original shape after removal of the external force, called springs . The existing spring is generally and often stretched in use, a protective structure is not arranged in the stretching process, the existing spring is possibly stressed too much, the existing spring is possibly deformed due to too long self-extension or broken due to too large surface tension, and an overload protection mechanism is absent. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides the spring with the mechanical overload protection mechanism, which has the advantages of overload protection on the stretching of the spring, limitation on the stretching speed of the spring and the like, and solves the problem of breakage caused by overlarge stress due to overlong stretching when the spring is used. (II) technical scheme The utility model provides a spring with a mechanical overload protection mechanism, which comprises a sleeve, wherein two ends of the outer surface of the sleeve are sleeved with fixed rings, two ends of the inner wall of the sleeve are fixedly connected with limiting rings, two ends of the outer surface of the sleeve are correspondingly sleeved with movable rings in a sliding manner, and two movable rings (3) are respectively provided with a buffer device; wherein an overload prevention device is arranged between the two buffer devices; Preferably, the overload prevention device comprises four first fixing rods, the four first fixing rods are fixedly arranged on the surface of the movable ring close to one end of the fixing ring at equal intervals, and one ends, far away from the movable ring, of the four first fixing rods are fixedly connected with the disc. Preferably, the upper surface of the disc is fixedly connected with a fixing rod, and the fixing rod is sleeved on the inner surface of the sleeve in a sliding way; the upper end of the fixed rod is fixedly connected with a first piston, and the first piston is sleeved on the inner surface of the sleeve in a sliding manner. Preferably, the upper surface of the first piston is fixedly connected with a spring, the upper surface of the spring is fixedly connected with a second piston, and the second piston is sleeved on the inner surface of the sleeve in a sliding manner. Preferably, the overload prevention device comprises two fixed blocks, the two fixed blocks are correspondingly and respectively arranged at the corresponding ends of the two second pistons, the corresponding ends of the two fixed blocks are respectively connected with two supporting rods in a rotating mode, and the corresponding ends of the two supporting rods are respectively connected with two sliding blocks in a rotating mode. Preferably, the inner surfaces of the two sliding blocks are sleeved with a second fixed rod in a sliding mode, and the second fixed rod is fixedly arranged on the inner wall of the sleeve. Preferably, the two buffer devices have the same structure and are arranged in a mirror image (III) beneficial effects Compared with the prior art, the utility model provides the spring with the mechanical overload protection mechanism, which has the following beneficial effects: 1. The spring with the mechanical overload protection mechanism is characterized in that when the disc receives downward tension, the disc applies downward tension to the fixing rod fixedly connected with the upper surface after being stressed, the fixing rod applies downward tension to the first piston fixedly connected with the upper surface, the first piston applies downward tension to the spring fixedly connected with the upper surface to expand the spring, the disc drives the first fixing rod fixedly connected with the upper surface to displace when the spring expands, meanwhile, the first fixing rod drives the moving ring fixedly connected with the upper end to slide downwards on the outer surface of the sleeve, at the moment, the moving ring slides to the fixing ring, the moving ring is limited by the fixing ring to prevent the moving ring from continuing to displace downwards, meanwhile, the fixing rod does not continue to displace downwards, and the spring is not expanded, so that overload protection is formed. 2. This spring with mechanical overload protection mechanism, when the spring is stretched, the spring drives upper surface fixed connection's second piston and moves down, the fixed block of upper surface fixed connection is driven to the second piston and moves down, the fixed block drives two branches of upper surface rotation connection and moves down, two b