This standard specifies the model representation method, technical requirements, inspection rules and marking, packaging, transportation and storage of tea tree pruning machines. This standard applies to double-acting reciprocating cutting tea tree pruning machines. JB/T 5674-1991 Technical conditions for tea tree pruning machines JB/T5674-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T5674-91
Tea Tree Pruning Machine
Published on September 13, 1991
Technical Conditions
Implemented on July 1, 1992
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Tea Tree Pruning Machine
Technical Conditions
1 Subject Content and Scope of Application
JB/T5674-91
This standard specifies the model representation method, technical requirements, inspection rules and marking, packaging, transportation and storage of tea tree pruning machines (hereinafter referred to as pruning machines).
This standard applies to double-acting reciprocating cutting machines Tea tree pruning machine. 2 Reference standards
GB1800
GB1801
GB1804
GB1184
GB2828
3 Terms
Tolerance and fit
Tolerance and fit
General Standard tolerance and basic deviation
Dimensions to 500mm Tolerance zone and fit of holes and shafts
Tolerance and fit Limit deviation of dimensions without tolerance Shape and position tolerance Provisions for tolerances without tolerance High-quality carbon structural steel
Technical conditions
Batch inspection Count sampling procedure and sampling table (applicable to inspection of continuous batches) Product label
Agricultural machinery and implements
Numbering rules
Agricultural machinery and implements Painting
3.1 Branch tear rate
On the cut surface after tea tree pruning, the percentage of branches with torn branch cuts and branch epidermis torn and damaged greater than 1/3 of the circumference to the total number of branches.
3.2 Branch missed cutting rate
On the cut surface after tea tree pruning, the percentage of the number of branches that have not been cut and have not broken after cutting to the total number of branches. 4 Model indication method
4.1 According to the structural principle and working characteristics of the pruning machine, it is a double-action reciprocating cutting type. 4.2 According to the provisions of Nj89, the product model indication method of the pruning machine is as follows: 3C
Main parameters, cutting radius, mm
Characteristic code, flat type (single-person use)
Category code, tea tree pruning machine
Tea tree field management Machinery code
1.3 Marking example: Tea pair trimmer with cutting width of 1100: 3CXP1100 is a two-person flat trimmer; 3CX1100 is a two-person arc trimmer. Approved by the Ministry of Machinery and Electronics Industry on September 13, 1991 and implemented on July 1, 1992
5 Technical requirements
5.1 General requirements
JB/T5674-91
5.1.1 The trimmer shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 5.1.2 The supporting purchased parts shall comply with the current relevant standards and have a certificate of conformity. 5.1.3 The trimmer shall meet the safety requirements, and the transmission parts that affect safety shall have protective devices, and the parts that are easy to loose shall have reliable anti-loosening measures.
5.1.4 All aluminum alloy parts shall have a smooth and complete surface, and shall not have defects such as scratches, cracks and bumps. 5.1.5
All exposed parts should be free of burrs and mechanical damage that affects the assembly quality, and the corners should be smooth. Parts that affect the appearance quality should be electroplated, blackened or painted. The dimensional tolerances of holes and shafts that match rolling bearings should comply with the IT7 and IT6 grades specified in GB1800. The tolerances not marked in the drawings shall be in accordance with the following provisions:
The dimensional tolerances of machined parts not marked shall comply with the IT14 grade specified in GB1804; the shape and position tolerances of machined parts not marked shall comply with the C grade specified in GB1184. 5.1.9 The appearance of the trimmer is smooth and flat, and the quality of the paint should comply with the quality requirements of *TQ-1-NP\ in NJ/Z3. 5.2 Overall performance
The main performance indicators of the trimmer should comply with the provisions of Table 1. Table 1
Productivity
Oil consumption
Tear rate
Missed cutting rate
Unit of measurement
Light trimmer
Deep trimmer
Working time before the first failure of the trimmer, light and deep trimmers shall not be less than 100h, and heavy trimmers shall not be less than 70h. The trimmer effectiveness shall not be less than 95%.
The trimmer noise shall not be greater than 90(dB)A.
The trimmer vibration intensity shall not be greater than 19.62m/s\. 5.3 Technical requirements for main components
5.3.1 The shape and position tolerances of the transmission shaft, eccentric wheel and connecting rod shall comply with the provisions of Table 2. 5.3.2 The blade pitches of light, deep and heavy trimmers are 35, 40 and 60mm respectively. The blade thicknesses of light, deep and heavy trimmers are 2.5, 3.0 and 5.5~6.0mm respectively. 5.3.3
Heavy trimmer
The arc radius of the arc blade should be kept uniform and consistent. In the absence of external force, the tolerance of the arc radius is not greater than 5mm. 2
Part name
JB/T5674—91
Transmission shaft
5.3.5·The material performance of the cutting blade should not be lower than 65Mn specified in GB699. 5.3.6 The heat treatment hardness of the cutting blade teeth is 52~56HRC. 5.4 Assembly quality
5.4.1 All parts must be inspected and qualified before assembly. 5.4.2
d, axis to d: axis
coaxiality tolerance:
shaft diameter d;d, dimension tolerance
shaft diameter d dimension tolerance
d, d axis to d
axis parallelism tolerance t
aperture D dimension tolerance
D: axis relative to D axis
line parallelism tolerance
clearance between upper and lower blades after installation: flat ≤0.2mm; arc ≤0.3mm. Anti-rust oil should be applied to the machine teeth.
The transmission box shall not have oil leakage.
The temperature rise of the bearing part and the reducer shall not exceed 25℃. The machine should run flexibly and smoothly without abnormal noise. 5.4.6
6 Inspection rules
Tolerance grade standard code
9 grade/GB1184
HT6/GB1801
HT6/GB1801wwW.bzxz.Net
9 grade/GB1184
HT8/GB1801
9 grade/GB1184
6.1 Each trimmer shall be inspected and qualified by the quality inspection department of the manufacturer, and the "product certificate" shall be issued before it can leave the factory. 6.2 Each trimmer shall be subjected to an idle running test of more than 0.5h before leaving the factory. 6.3 When the ordering unit conducts random inspection of product quality, it shall be carried out in accordance with the provisions of GB2828, and the qualified quality level AQL value shall be agreed upon by the supply and demand parties. 6.4 If the user complies with the usage and storage conditions specified in the "Product Instructions", within 12 months from the date of delivery, if the product is damaged or cannot be used normally due to poor manufacturing quality, the manufacturer shall repair, replace or return the product to the user without charge. 3
Marking, packaging, transportation and storage
JB/T5674-91
Each trimmer shall have a nameplate fixed in a conspicuous position. The nameplate shall Comply with the provisions of JB8. The contents are: 7.1
Product name and model;
Main technical parameters;
Factory number;
Factory date;
Manufacturer name.
Product packaging should be firmly fixed. A protective cover should be added to the blade part to prevent rain and ensure that the product is intact. The words and marks on the outer wall of the packaging box should be clear and the contents are as follows: a.
Product name and model;
Manufacturer name;
Packaging box dimensions (length × width × height), mm; net weight, gross weight , kg;
Delivery address and name of consignee;
Lifting line position, words and marks such as "handle with care" and "do not invert". 7.4 The product should be securely fixed to the vehicle during transportation and comply with relevant regulations to ensure that the product is not damaged. 7.5
. Each product should be accompanied by the following technical conditions: a,
Packing list;
Product certificate;
Product instruction manual,
User opinion letter.
Each product should be accompanied by the accessories and attachments specified in the "Product Instructions" when it leaves the factory. 7.6
The trimmer should be stored in a dry, ventilated place without harmful odors. If it is stored outdoors, it must be protected from the sun and rain. Additional remarks:
This standard is proposed and managed by the Chinese Academy of Agricultural Mechanization Sciences of the Ministry of Machinery and Electronics Industry. This standard is drafted by the Tea Research Institute of the Chinese Academy of Agricultural Sciences. The main drafters of this standard are Shu Nanbing and Wang Shulan. Chinese People's Government
Mechanical Industry Standard
Technical Conditions for Tea Tree Pruning Machine
JB/T 5674-91
Published and distributed by the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry (Box S144, Beijing
Copyright reserved
Postal Code 100081)
No reproduction allowed
Printed by Qinghe County Printing Factory, Hebei Province
Format 880×1230
First edition in December 1991
Sheet 1/2
Word count 8000
First printing in December 1991
Print run 00.001-500
Price 0.80 yuan
No. 0472
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