Assistant measurement unit for moment wrench in narrow operation area

[0011] Auxiliary measuring device for torque wrench in narrow working area, including electric torque wrench 14, electric torque wrench control display 15, torque transmission device. The torque transmission device includes: upper cover 1, lower cover 5, input gear 2, intermediate gear 3, output gear 4, connecting housing 6, coupling sleeve 12, vertical rod 8, lock nut 9, The balance sleeve 10, the input gear 2, the intermediate gear 3 and the output gear 4 are all installed between the upper cover plate 1 and the lower cover plate 5. The input gear 2 meshes with the intermediate gear 3, and the intermediate gear 3 meshes with the output gear 4. The upper cover plate 1 and the lower cover plate 5 are assembled and fixedly connected. The drive shaft head at the upper end of the input gear 2 is fitted into the coupling sleeve 12, which is installed in the middle of the connecting housing 6, which connects the housing 6 and the upper cover 1 The bolt and the elastic sleeve 11 are fixedly connected, and the transmission shaft head at the lower end of the output gear 4 is connected with the wrench sleeve 13. The upper cover 1 and the lower cover 5 are provided with an arc-shaped arm 16, and the arc-shaped arm 16 is provided with a long slot hole 17, the vertical rod 8 is inserted into the long slot 17 for adjustment, and the upper end of the vertical rod 8 is connected with a threaded lock Tighten the nut 9, the lower end is threadedly connected to the balance sleeve 10, the lock nut 9 is equipped with a handle 7, and the handle 7 is pulled to lock the nut 9 to lock the upright 8 on the arc-shaped arm 16. The electric torque wrench 14 adopts the commercially available ETV-DS9-600-25S electric elbow type torque wrench, which is installed on the connecting shell 6 and is firmly tightened with bolts and elastic sleeve 11. The electric torque wrench 14 outputs the shaft head Installed in the coupling sleeve 12, the coupling sleeve 12 connects the output shaft head of the electric torque wrench 14 with the transmission shaft head of the input gear 2. When the electric torque wrench 14 rotates, the input gear 2 is driven by the coupling sleeve 12. When rotating, the electric torque wrench control display 15 adopts a commercially available TUBSORDS9 electric torque wrench control display, which is connected to the transmission shaft head at the upper end of the output gear 4 to form a torque wrench auxiliary measurement device in a narrow working area.

[0012] working principle:

[0013] Loosen the lock nut 9, adjust the position of the vertical rod 8 on the elongated slot 17 on the arc-shaped arm 16, so that the balance sleeve 10 is sleeved on the adjacent fastener of the tightened fastener, and the wrench is sleeved at the same time. The barrel 13 is sleeved on the tightened fastener. After the above steps are completed, the power switch of the electric torque wrench is pressed, the output shaft of the electric torque wrench 14 rotates, and the input gear 2, the intermediate gear 3, and the intermediate gear 3 are driven by the coupling sleeve 12. The output gear 4 rotates, and the torque is transmitted to the tightened fastener through the wrench sleeve 13 connected with the lower end of the transmission shaft of the output gear 4. When the wrench torque reaches the specified value, the reaction force generated by the wrench is generated by the balance sleeve 10 make a balance.