This standard is a revision of ZB J27 001-89. During the revision, the flexible shaft with plastic sheath was added, the structural classification was clarified, and the load-bearing capacity index of the flexible shaft was standardized. This standard specifies the classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of push-pull flexible shafts for construction machinery. This standard is applicable to push-pull flexible shafts installed on construction machinery to operate hydraulic control valves, winches and engine throttles, etc., and is also applicable to agricultural machinery. JB/T 8407-1996 Push-pull flexible shafts for construction machinery JB/T8407-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T8407-96
Push-pull flexible shaft for engineering machinery
1996-09-03 issued
Ministry of Industry of the People's Republic of China
1997-07-01 implemented
JB/1 840796
89 Push-pull flexible shaft for engineering machinery, revised on the basis of professional standards. When revising ZBJ27001-2BJ27001
89, this standard retained the contents of ZB27001 that have been proved to be suitable for my country's production and use conditions in practice. In order to make the standard more advanced, reasonable and comprehensive, the technical information of relevant flexible shafts from foreign countries and relevant domestic standards are taken into consideration, combined with the actual situation of production and use of push-pull shafts in my country, the flexible shaft with plastic guard is added, the classification is clarified, and the bearing capacity of the flexible shaft is adjusted. From the implementation of this standard, push-pull flexible shaft manufacturers should actively adopt this standard and meet the requirements of this standard. From the date of entry into force, this standard will replace 2BJ27001. This standard was issued by the Technical Committee for Standardization of Engineering Machinery of the Ministry of Machinery Industry and is under the jurisdiction of the Technical Committee. The drafting unit of this standard is Henan Da Flexible Shaft Manufacturing Co., Ltd., the Tianlu Engineering Machinery Research Institute of the Ministry of Machinery Industry, and the main drafters of this standard are Xiang Pu, Zhang Dongbing and Li Yuyan. 1 Specification
Machinery Industry Standard of the People's Republic of China
Push-pull Flexible Shafts for Engineering Machinery
JB/T H487-96
This standard defines the classification, technical requirements, test methods, inspection rules, packaging, transportation and storage of push-pull flexible shafts for use in industrial machinery. This standard applies to push-pull flexible shafts (hereinafter referred to as flexible shafts) installed on hydraulic control systems, engine brakes, etc. It is applicable to industrial machinery.
2 Reference standards
The following standards contain the provisions that have been re-evaluated in this standard and have become vehicle standards. This standard is published for the time being. The versions shown are valid. All standards are subject to revision. Products using this standard should consider using the latest version of the following standard to ensure the understandability. GB2828-87
CH8709.48
CB8915-88
JR2864B1
JB/T 5547-91.
2910192
3.1 Type
Batch inspection, sampling, library and shaft sample table (applicable + link belt inspection) Sick steel for flexible shaft
Premium pressure copper wire
Chemical treatment layer of electroformed screen for automobile
General technical conditions for engineering machinery packaging
Automobile control cable assembly
Compared type See Table 1. Figure 1. Figure 2 and Figure 3. Table] Flexible shaft type According to the structure Classification of materials Approved by the Ministry of Machinery Industry on September 3, 1996 Dynamic type Manipulation method Door type Implementation on July 1, 1997 Final pull 2 ​​Blue competition: JB/T 8407--96
Golden two protective tube 16-core auxiliary 1? Frequency mother surface
: spindle head, 2-dust cover: 3-protective tube shaking head 1-molded material protective tube, 5-core auxiliary 16, specification mother: 7-seating diagram fixed type
1-spindle joint-break seat sleeve-guide world 5-protective sample joint one week protection pick-enterprise belonging to protection one heart type-title mother 1-ban medical e
spindle head: 2.4 hospital Run: 3 guide tube 5 grid tube connection US 16 plastic guard single 1-core electricity: 8 suction: 0-heat map 2
you move type
1-stop hand: 2-pick: 3-pick move sale: 4 frequency mother: 5.13 sit map: C12-original 7-main tube 811 one guard find head, 9-core fine; 30-type material guard tube: upper 1.16-dustproof type: 15 number to receive: 17-core auxiliary connection buy map fall vertical throttle type (Gum material sheath)
3.2 Marking method
3.2.1 The soft batch marking is composed of the following parts. 3.2.2 Marking indication
JB/T8407-96
·Standard number
Working stroke
Diameter of core egg joint, mm
Mandrel support diameter, mm
Sheath material code
Structural type code
Product name
Weight expansion, mandrel diameter 4.5mm length 2000mm, mandrel joint diameter 8m, 1. The push-pull type shaft with a working stroke of 60mm is marked as:
Push-pull teaching shaft GS4.5×20c×8×50JB/T84U-6 swing type, mesh sheath, mandrel diameter 6rmtr, length 1E0r mm, mandrel joint diameter 1 1mm, working stroke 751mml push-pull auxiliary mark;
push-pull type shaft BJ6×1500×10×75JB/8407963.3 Basic parameters
3.3.1 The mandrel diameter is 2.1.3.3.4.5, 6.0mm3.3.2 The length series of the flexible shaft is shown in Table 2.
The total length series of the table is shown in Table 2.
The main dimensions of the shaft are shown in Table 3.
Same as type G
Core auxiliary head
X10-6g
M10-6g
Protective tube head
MhX 1.?5-tr-1.
M12X :. 25 Fg-L
M12×1.25-fg-L
M16X1. 5-6g-1Www.bzxZ.net
M16× 1- 5-6g-l.
M20X 1- 5-6g-L.
Table 3 Connection dimensions of flexible shaft
Swing reading R
Change head with cat
Mlo-tg
Protective mother core head
M8×1.25-6g L
M2×1.25-6g.L
M12×1.25-Eg-L
M16X 3. b-6g-L
MIG×1. 5-Gg-L
M22 × 1- 5-Gg-L
Operation throttle type
125℃
Protective pipe joint
M12×1.25-6g-L
M20×1.5-6g-L
4Technical requirements
JB/T 8407 —96
4, the software assembly shall comply with the requirements of this standard and shall be manufactured according to the product drawings and technical documents approved through the established procedures. 4.2 Working environment: When the environmental degradation degree is 4~59 and the relative humidity is not more than 90%, the flexible shaft shall ensure that the variable control can work smoothly. 4.3.1 The core of the flexible shaft is made of two-layer plastic steel and shoulder steel wire - its performance shall conform to the requirements of GB897 and G8709. 4.3.2 The shaft layer of the flexible shaft is made of round suction steel wire rope and fan wire. 4.3.3 The shaft of the flexible shaft and the middle joint are made of materials with mechanical properties not lower than 35 steel. 4.4 External requirements
4.4.1 If the outer layer of the protective tube is exposed, the surface of the protective layer shall be uniform, smooth, and free of scratches and damage; the surface of the plastic protective layer shall be clean. 4.4. The surface of the joint, protective tube and nut shall be clean, and no burrs, burrs or cracks are allowed. 4.4.3 The anti-corrosion of the metal parts such as the joints, joints, and nut at both ends of the flexible tube shall comply with the provisions of 2361. 4.5 The lubricating core shall be cleaned with a sewage agent before being installed in the protective tube, and lubricated with grease throughout the length. The grease shall comply with the provisions of the relevant standards.
The limit deviation of the total length of the flexible shaft shall comply with the provisions of Table 4. The limit deviation of the total length of the flexible shaft in Table 4
4.7 Performance requirements
4.7.1 The load-bearing capacity of the flexible shaft in the working state shall comply with the provisions of Table 5. 225~·3309
Table 5 Diameter of bearing core shaft of flexible bearing under working condition
4.2 The ultimate force of flexible bearing shall not be less than the value specified in Table 6. Thrust
Ultra-lowering force
Ultra-lowering tension
JB/T8407-96
Table 6 Limit force of flexible bearing
The thrust of protective pipe joint and the static tension of core shaft joint shall comply with the provisions of Table?. Table? Thrust of protective pipe joint and static tension of core shaft joint
Tension force
47.4. The flexible shaft - fixed and the other - is rotated 35° to the left and right with the fixed position as the center to push and reciprocate. The flexible shaft core shaft and the protective tube shall not produce any obvious deformation, and each connection part shall not be loose or disengaged. 4.7.5 The flexible shaft has a certain elasticity and flexibility. The bending radius of the flexible shaft with a core shaft diameter of 4.5mm and above shall not be less than 300mm. The flexible shaft with a core shaft diameter of 4.5m and above shall be able to work normally when the long diameter of the flexible shaft is not less than 250%. 4.7.6 The limit deviation of the flexible shaft working shall comply with the provisions of Table 8. Table 8 Limit deviation of flexible shaft working
T Working fee
56-·100
When the flexible shaft has a bending radius of 300m\, the friction resistance between the core shaft and the protective tube shall comply with the provisions of Table 9. 4.7.7
Table 9 Friction resistance between mandrel and protective tube
Flexible shaft degree
Reversing force
1000~2000
When the flexible shaft is bent 360*, its idle stroke should comply with the provisions of Table 10. Table 10 Stroke of flexible shaft
Main shaft diameter
Idle stroke
Both the load efficiency and stroke efficiency of the flexible shaft assembly should not be less than 70%, 4.7.9
The service life of the polishing assembly should not be less than 10,000 times.
When the user has special requirements for the flexible shaft, he can negotiate with the manufacturer to solve it. 5 Test method
5.1 Visual inspection is used for the inspection of the shaft outer gauge. 5.2 The inspection of the total length and connection size is carried out by general or special selection plates. 4. 5
5.3 The rate solid performance test of the joint is carried out on a pull-out test bench, and the test time is 5 minutes. 5.4 The trace labor test of the flexible shaft is carried out on a special test bench under simulated working conditions. 22000
5.5 The elasticity test of the flexible shaft shall be carried out in accordance with the provisions of 4.7.5. The flexible shaft shall be wound on a 250mm or 4300mm column according to the diameter of the core shaft, and then opened and placed flat on the platform. The flexible shaft shall not have obvious permanent deformation. 5
JB/T8407-96
5.6 For the test of auxiliary load capacity, the tension is carried out on the tension test machine and the thrust is carried out on the special test bench. 5.7 For the test of the shaft, the limit and empty stroke are tested on the special test bench with elastic material and steel ruler. 5.8 The load and release test of the flexible shaft shall be carried out in accordance with the provisions of QC/T29101. 6 Inspection rules
.1 The finished product shall be inspected by the technical inspection and maintenance department according to the standards and relevant technical documents cited before leaving the factory, and the product certificate shall be attached. 6.2 Factory inspection
Each flexible shaft shall be inspected at the factory, and the inspection items are: a) Appearance quality
b) Correctness of assembly:
|) Dimensions and total length of each part:
d) Completeness of random documents:
|) Items required to be inspected by the user.
6.3 Type inspection
6.3.1 Smoke type inspection shall be carried out under the following circumstances: a) When there are major changes in product process, structure or materials, and the factory inspection results are very different from the previous type inspection results; c) When the product has been in continuous production for 2 to 3 years;
d) When the product is resumed after a long period of suspension; 6.3.2 The measured values ​​of type inspection shall comply with the requirements of product drawings and this standard. 6.4 Sampling inspection
6.4.1 Random sampling is used in the products of users or manufacturers entering the warehouse. 6.4.2 Rules for sampling inspection of flexible shafts shall be carried out in accordance with the provisions of GB282B. This standard selects the following schemes: u) Batch placement, with 200 flexible shafts as a batch: b) Inspection level, general level 1:
e) Qualified quality level, AGL4;
d) Strictness of sampling plan, for normal inspection, transfer rules can be used: e) Sampling plan type, one-time sampling plan is adopted. 6. 5 When there are special requirements for the collection rules, the user and the manufacturer shall cooperate again, mark, package, transport and purchase and storage
,! The model shaft shall have a label, and the label shall indicate: manufacturing! Name:
b) Product name:
) Product model and specification,
d) Manufacturing date,
7.2 The packaging of the flexible shaft shall comply with the provisions of JB/T5947, 7.3 The surface of the flexible shaft shall not be damaged or scratched during transportation, 7.4 The qualified flexible shaft shall be stored in a well-ventilated and dry room without any trapping medium.
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