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CN-224209844-U - Fixed-circle number open type ratchet wrench

CN224209844UCN 224209844 UCN224209844 UCN 224209844UCN-224209844-U

Abstract

The utility model discloses a fixed-number-of-turns open-type ratchet wrench, which belongs to the technical field of ratchet wrenches and comprises a wrench body and a wrench body cover, wherein a hexagonal ratchet is arranged at the open end of the wrench body, the hexagonal ratchet is limited in the wrench body through the wrench body cover and can rotate relative to the wrench body, a ratchet limiting device and a fixed-number-of-turns device are arranged in the wrench body, the ratchet limiting device is used for limiting the relative rotation of the hexagonal ratchet and the wrench body in the clockwise or anticlockwise direction, and the fixed-number-of-turns device is used for limiting the number of turns of the hexagonal ratchet relative to the wrench body. The fixed-turn number open-type ratchet wrench can effectively solve the problems that in the prior art, the number of turns cannot be fixed during operation, the number of turns can be counted only in a line drawing mode, the efficiency is low, the error rate is high and the like.

Inventors

  • ZHAO JINGFEI
  • LI QIANG
  • LUO FUPING
  • FAN LUN
  • Su Maobo

Assignees

  • 厚普清洁能源集团能源装备有限公司

Dates

Publication Date
20260508
Application Date
20250401

Claims (10)

  1. 1. The open-type ratchet wrench with the fixed number of turns is characterized by comprising a wrench body (1) and a wrench body cover (2), wherein a hexagonal ratchet wheel (3) is arranged at the open end of the wrench body (1), the hexagonal ratchet wheel (3) is limited in the wrench body (1) through the wrench body cover (2) and can rotate relative to the wrench body (1), a ratchet wheel limiting device and a fixed number of turns device are arranged in the wrench body (1), the ratchet wheel limiting device is used for limiting relative rotation of the hexagonal ratchet wheel (3) and the wrench body (1) in the clockwise or anticlockwise direction, and the fixed number of turns device is used for limiting the number of turns of the hexagonal ratchet wheel (3) rotating relative to the wrench body (1).
  2. 2. The fixed-circle number open-type ratchet wrench of claim 1, wherein the ratchet limiting device comprises a ratchet clamp (4), a push block (5) and a push rod (6), wherein one side of the ratchet clamp (4) is fixedly connected with one side of the push block (5) through a pin and can rotate relatively through the pin, the other side of the push block (5) is fixedly connected with the push rod (6), and the ratchet clamp (4) is matched with the hexagonal ratchet (3) to limit the relative rotation of the hexagonal ratchet (3).
  3. 3. The fixed-circle open-type ratchet wrench according to claim 2, wherein a push rod sliding seat (7) is arranged in the wrench body (1), the push rod (6) is supported by the push rod sliding seat (7) and can move on the push rod sliding seat (7) along the axial direction of the wrench body (1), a pressure spring (8) is arranged between the push rod (6) and the push rod sliding seat (7) to apply an axial force to the push rod (6) towards the direction of the hexagonal ratchet wheel (3), and the ratchet clamp (4) is meshed with the hexagonal ratchet wheel (3).
  4. 4. The fixed-number-of-turns open-type ratchet wrench according to claim 3, wherein a push rod sliding block (9) is arranged at one end, far away from the ratchet clamp (4), of the push rod (6), the push rod sliding block (9) is fixedly connected with a shifting block (10) through a screw, and the shifting block (10) is arranged on the outer side of the wrench body (1).
  5. 5. The fixed-number-of-turns open-type ratchet wrench of claim 4, wherein the fixed-number-of-turns device comprises a thin steel sheet (11) and a number-of-turns positioning groove (12), the number-of-turns positioning groove (12) is fixed in the wrench body (1), one end of the thin steel sheet (11) is fixedly connected with the hexagonal ratchet wheel (3), the other end of the thin steel sheet is connected with a number-of-turns positioning block (13), and the number-of-turns positioning block (13) is slidably connected in the number-of-turns positioning groove (12).
  6. 6. The open-ended ratchet wrench of claim 5, wherein said sheet (11) is curved into a circular shape following the relative rotation of the hexagonal ratchet (3).
  7. 7. The open-ended ratchet wrench of claim 6, wherein said turn positioning block (13) has a tension spring (14) at an end thereof remote from the hexagonal ratchet (3) for providing an axial force in a direction opposite to the hexagonal ratchet (3).
  8. 8. The open-ended ratchet wrench of claim 7, wherein said tension spring (14) is secured within the wrench body (1) by a spring retainer (15), said tension spring (14) being disposed parallel to the push rod (6).
  9. 9. The open-ended ratchet wrench with fixed turns as claimed in claim 8, wherein one side of the wrench body (1) corresponding to the turn locating groove (12) is provided with a waist hole with the same length, the waist hole is provided with an adjusting slide button, and the adjusting slide button slides on the waist hole to adjust the slidable distance of the turn locating block (13).
  10. 10. The open-ended ratchet wrench of claim 9, wherein the waist hole is provided with a circle number scale, and the circle number scale represents a specific circle number of the hexagonal ratchet wheel (3) capable of rotating relatively.

Description

Fixed-circle number open type ratchet wrench Technical Field The utility model belongs to the technical field of ratchet wrenches. In particular to a fixed-circle open type ratchet wrench. Background The ratchet wrench and the ratchet mechanism realize the function of unidirectional rotation through the engagement of the ratchet clamp and the ratchet. When the driving part (such as a rocker) swings anticlockwise, the ratchet wheel clamp pushes the ratchet wheel to rotate clockwise, and when the driving part swings clockwise, the ratchet wheel clamp slides on the tooth back of the ratchet wheel to prevent the ratchet wheel from rotating reversely, so that unidirectional stepping motion ‌ is realized. This design enables the hexagonal ratchet wrench to provide efficient torque output while remaining stable. The existing ratchet wrench cannot fix the number of turns during operation, the requirement on the number of turns is very strict during assembly of the clamping sleeve joint of the hydrogen energy equipment, the conventional wrench can only count the number of turns in a line drawing mode, the efficiency is low, the error rate is high, and meanwhile, the existing ratchet wrench cannot be automatically reset and is not suitable for the working condition of assembly of the clamping sleeve joint of the hydrogen energy equipment. Disclosure of utility model The utility model aims to provide a fixed-turn number open-type ratchet wrench aiming at the defects, so as to solve the problems that the ratchet wrench in the prior art cannot fix turns during operation, the counting of turns can only be carried out in a line drawing mode, the efficiency is low, the error rate is high and the like. In order to achieve the above purpose, the present utility model provides the following technical solutions: The open-type ratchet wrench with the fixed number of turns comprises a wrench body and a wrench body cover, wherein a hexagonal ratchet is arranged at the open end of the wrench body and is limited in the wrench body through the wrench body cover and can rotate relative to the wrench body, a ratchet limiting device and a fixed number of turns device are arranged in the wrench body, the ratchet limiting device is used for limiting relative rotation of the hexagonal ratchet and the wrench body in the clockwise or anticlockwise direction, and the fixed number of turns device is used for limiting the number of turns of the hexagonal ratchet relative to the wrench body. The ratchet limiting device comprises a ratchet clamp, a push block and a push rod, wherein one side of the ratchet clamp is fixedly connected with one side of the push block through a pin and can rotate relatively through the pin, the other side of the push block is fixedly connected with the push rod, and the ratchet clamp is matched with the hexagonal ratchet to limit the relative rotation of the hexagonal ratchet. Further, a push rod sliding seat is arranged in the wrench body; the push rod is supported by the push rod sliding seat and can move on the push rod sliding seat along the axial direction of the wrench body, and a pressure spring is arranged between the push rod and the push rod sliding seat to apply an axial force to the push rod towards the direction of the hexagonal ratchet wheel so as to enable the ratchet wheel clamp and the hexagonal ratchet wheel to be meshed with each other. Further, a push rod sliding block is arranged at one end, far away from the ratchet wheel clamp, of the push rod, the push rod sliding block is fixedly connected with a shifting block through a screw, and the shifting block is arranged on the outer side of the wrench body. The number of turns fixing device comprises a thin steel sheet and a number of turns locating groove, wherein the number of turns locating groove is fixed in the wrench body, one end of the thin steel sheet is fixedly connected with the hexagonal ratchet wheel, the other end of the thin steel sheet is connected with a number of turns locating block, and the number of turns locating block is slidably connected in the number of turns locating groove. Further, the thin steel sheet can be bent into a round shape along with the relative rotation of the hexagonal ratchet wheel. Further, a tension spring is arranged at one end of the circle number positioning block, which is far away from the hexagonal ratchet wheel, and provides an axial force towards the opposite direction of the hexagonal ratchet wheel. Further, the tension spring is fixed in the wrench body through a spring fixer, and the tension spring is arranged in parallel with the push rod. Furthermore, one side of the wrench body corresponding to the turn number positioning groove is provided with a waist hole with the same length, the waist hole is provided with an adjusting slide button, and the adjusting slide button slides on the waist hole so as to adjust the slidable distance of the turn number positioning block. Furthermore, the waist h