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CN-224209873-U - Fixed protection frock of adjustment reduction gear lead screw subassembly moment

CN224209873UCN 224209873 UCN224209873 UCN 224209873UCN-224209873-U

Abstract

The fixed protection tool comprises a fixed tool and a protection tool, wherein the fixed tool is embedded into the screw assembly of the speed reducer, the fixed tool forms a complete placement and clamping plane for filling the height difference of each structure of the screw assembly, the screw assembly is in fit limiting fit with the fixed tool to limit the rotation of a screw slider and the swing of a screw shell, the protection tool consists of a handle and a head, the head is used for adjusting a thin-pressure nut in the screw assembly of the speed reducer, the installation of the thick-pressure nut is not interfered, and the orifice of the screw shell is not interfered. The assembly tool is used for improving the efficiency of the assembly process and protecting the appearance of the assembly, has the advantages of simple tool structure, convenience in installation, safety in use and long service life, greatly improves the torque adjustment efficiency of the screw assembly of the speed reducer, effectively protects the assembly in the adjustment process, and is suitable for popularization.

Inventors

  • CHENG BIN
  • MA ZHONGWEI
  • YANG YANZI
  • ZHOU GAIMEI
  • LI QING

Assignees

  • 陕西渭河工模具有限公司

Dates

Publication Date
20260508
Application Date
20250702

Claims (6)

  1. 1. A fixed protection tool for adjusting torque of a screw assembly of a speed reducer is characterized by comprising a fixed tool (6) and a protection tool (7), wherein the fixed tool (6) is embedded into the screw assembly of the speed reducer, the fixed tool (6) forms a complete placement and clamping plane for filling up height differences of all structures of the screw assembly (1), the screw assembly (1) is in fit limit fit with the fixed tool (6) so as to limit rotation of a screw slider (103) in the screw assembly (1) and limit swing of a screw shell (101), the protection tool (7) consists of a handle (701) and a head (702), and the head (702) is used for adjusting a thin-pressure nut (4) in the screw assembly of the speed reducer and does not interfere with installation of a thick-pressure nut (2) or touch an orifice of the screw shell (101).
  2. 2. The fixed protection tool as claimed in claim 1, wherein the fixed tool (6) has a rectangular structure; the fixing tool (6) is provided with a track type key groove structure (601) formed by surrounding L1 and L2, and the track type key groove structure (601) is used for adaptively limiting a slide block key (1031) on a screw rod slide block (103) to prevent the screw rod slide block (103) from rotating; A cavity II (603) formed by enclosing L6, R2, R7 and 2-R5 of the fixed tool (6) is used for filling the structural height difference of the screw rod assembly (1), a gap (6031) of 0.5mm is reserved between the cavity II (603) and the single side of the outer outline size of the screw rod shell (101), and a protection cavity of the screw rod shell (101) is formed; A cavity III (604) formed by D2 and L7 of the fixing tool (6) is matched with a screw shell stop boss (1011) for positioning the screw assembly (1); The fixing tool (6) is provided with 2-M5 deep screw holes (605) which are axisymmetric left and right, the 2-M5 deep screw holes (605) are aligned with screw holes (1012) formed in the screw rod shell (101), and the screw rod shell (101) is fastened and connected with the fixing tool (6) by using screws; The screw rod assembly (1) is integrally embedded into the fixing tool (6) and used for guaranteeing that the appearance of the screw rod assembly of the speed reducer is not worn and is not fading.
  3. 3. The fixture of claim 1, wherein the handle (701) and the head (702) are integrally formed; The head (702) is provided with an embedded boss (7021) with a small-diameter annular structure, the embedded boss (7021) is in clearance fit with an inner hole of the screw rod shell (101), an inner hexagonal hole through hole (7022) is formed in the center of the embedded boss (7021), the inner hexagonal hole through hole (7022) is in clearance fit with the outer edge of the thin-pressure nut (4) and is used for rotating and adjusting the thin-pressure nut (4), the inner hexagonal hole through hole (7022) does not affect the installation of the thick-pressure nut (2), and an inner hexagonal wrench (8) can be inserted into an inner hexagonal counter bore (1021) in the center of the screw rod (102) to fix or rotate the screw rod (102).
  4. 4. The fixed protection tool according to claim 3, wherein the dimension L01 of the through hole (7022) of the inner hexagonal hole is in clearance fit with the external dimension of the thin-pressed nut (4), the height dimension L02 of the head (702) is smaller than the corner height of the inner hexagonal wrench (8) when the inner hexagonal wrench is embedded, the inner diameter dimension D01 of the embedded boss (7021) is larger than the inner diameter dimension of the bearing (5), and the outer diameter dimension D02 of the embedded boss (7021) is smaller than the inner diameter of the end face of the screw rod shell (101).
  5. 5. The fixed protection tool as claimed in claim 1 or 2, wherein the fixed tool (6) is made of aluminum alloy.
  6. 6. The fixture according to claim 1, 3 or 4, wherein the thin-pressed nut (4) is a steel piece.

Description

Fixed protection frock of adjustment reduction gear lead screw subassembly moment Technical Field The utility model particularly relates to a fixed protection tool for adjusting torque of a screw rod assembly of a speed reducer. Background The speed reducer screw assembly can meet the working requirements of mechanical equipment by reducing the rotating speed and increasing the torque. The speed reducer is generally composed of a plurality of gears, the rotation speed is reduced and the output torque is improved through the meshing of the gears with different sizes, the screw rod is used for converting rotary motion and linear motion by means of the rotation and the movement of a spiral line, and the assembly is widely applied to the special fields of material handling, lifting and transportation, military, robot joints and the like. Before the reducer screw assembly shown in fig. 1 is used, the screwing torque of the thin-pressure nut 4 and the thick-pressure nut 2 and the starting torque of the screw 102 directly affect the starting performance and the loading capacity of the reducer screw assembly, if the starting torque of the screw 102 is too small, the system cannot effectively drive the load and the system is represented by insufficient force, so that in the reducer, the starting torque adjustment of the screw assembly is particularly critical, and the reasonable and accurate starting torque of the screw assembly is important for ensuring the stable operation and the efficient operation of a mechanical system. In the prior art, in the assembly process of the screw assembly of the speed reducer as shown in fig. 1, the starting torque of the screw assembly 1 is required to be 0.2n·m to 0.4n·m. Before testing the starting torque of the screw rod assembly 1, the starting torque of the screw rod assembly 1 can be tested after the rotating fastening torque of the thick-pressure nut 2 is 23 N.m, and the next process can be performed after the starting torque of the screw rod assembly 1 reaches the standard, if the starting torque of the screw rod assembly 1 does not reach the required value, the thick-pressure nut 2 and the gasket 3 are loosened, the tightness of the thin-pressure nut 4 is adjusted, the thick-pressure nut 2 is fastened for the second time, the rotating fastening torque of the thick-pressure nut 2 is ensured to be 23 N.m, and then the starting torque of the screw rod assembly 1 is continuously tested, so that the thin-pressure nut 4 is required to be repeatedly loosened, fastened and adjusted until the final starting torque of the screw rod 102 of the screw rod assembly 1 reaches the standard of 0.2 N.m-0.4 N.m. It can be seen that the assembly process of the speed reducer screw assembly shown in fig. 1 in the prior art has the following problems that the ① screw slider 103 rotates, the ② screw housing 101 has a height difference and is in a random whole plane with the screw assembly 1, the screw housing 101 can swing randomly and is very inconvenient when the torque is adjusted, the two people are required to coordinate and adjust, time and labor are wasted, the screw housing 101 can wear and appearance fade phenomena when the torque is adjusted by ③, and the screw housing 101 is easily damaged by touch interference when the ④ is operated by a common spanner because the thin-pressure nut 4 is positioned in an orifice of the screw housing 101 when the thin-pressure nut 4 is adjusted. In this regard, the following improvements have been proposed. Disclosure of utility model The utility model solves the technical problems that the fixed protection tool for adjusting the moment of the screw rod assembly of the speed reducer is provided, and the technical problems that when the moment is adjusted by the screw rod assembly of the speed reducer shown in figure 1, a screw rod sliding block is easy to rotate, a screw rod shell is easy to swing, multiple people are required to coordinate and adjust, the adjustment is time-consuming and labor-consuming, and the screw rod shell is easy to wear are solved. The technical scheme includes that the fixed protection tool for adjusting the moment of the screw rod assembly of the speed reducer comprises a fixed tool and a protection tool, the fixed tool is embedded into the screw rod assembly of the speed reducer, the fixed tool forms a complete placement and clamping plane for filling the height difference of each structure of the screw rod assembly, the screw rod assembly is in fit limiting fit with the fixed tool, so that the screw rod sliding block in the screw rod assembly is limited to rotate and the swing of a screw rod shell is limited, the protection tool consists of a handle and a head, and the head is used for adjusting a thin-pressure nut in the screw rod assembly of the speed reducer and does not interfere with the installation of a thick-pressure nut or touch the orifice of the screw rod shell. According to the technical scheme, the fixing tool i