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MT/T 183-1988: (Scraper conveyor central trough)
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(Scraper conveyor central trough)
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MT/T 183-1988
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PDF similar to MT/T 183-1988
Standard similar to MT/T 183-1988 MT/T 716 MT/T 661 MT 76 MT/T 717 MT 233 Basic data | Standard ID | MT/T 183-1988 (MT/T183-1988) | | Description (Translated English) | (Scraper conveyor central trough) | | Sector / Industry | Coal Industry Standard (Recommended) | | Classification of Chinese Standard | D93 | | Date of Issue | 4/13/1988 | | Date of Implementation | 8/1/1988 | MT/T 1: ---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Scraper conveyor central trough)
Ministry of Coal Industry Standards
MT/T 183-88
Central trough of scraper conveyor
1988-04-13 Approved 1988-08-01
Approved by the Ministry of Coal Industry of the People's Republic of China
Contents
1 Scope of application 1
2 Normative references 1
3 Product Category 1
4 Technical requirements 3
5 Test method 4
6 Inspection rules 4
7 Marking, packaging, transportation, storage 5
Central trough of scraper conveyor
1 Application
This standard is applicable to the unsealed middle tank (hereinafter referred to as the middle tank) of the scraper conveyor and the transfer machine in the coal mine.
2 Reference standards
MT 102 Slotted Conveyor Central Slot Test Specification
MT 105 General Specifications for Scraper Conveyor for Working Surface
General specifications of MT 106 forwarder
MT 149 Scraper Conveyor Type and Size
MT 150 Scraper Conveyor and Recycler Packaging General Specifications
General technical conditions of Q/ZB71 forgings
Q/ZB74 welding general technical conditions
3 Product Categories
3.1 Product type
Types of central grooves. The central grooves are divided into three types. type I, type II, and type III, as shown in Figure 1, Figure 2, and Figure 3.
3.2 Dimension parameters
The outer dimensions and connection dimensions of the three middle grooves shall meet the requirements of Figure 1 and Table 1, Figure 2 and Table 2, Figure 3 and Table 3, respectively.
Figure 1 Type I middle groove
Table 1 mm
HAL L1 L2 L3 L4 L5 L6 S
150 520 1200------≥6
150 520 1500 150 230 485 715 970 1200 ≥10
150 630 1500 150 230 485 715 970 1200 ≥12
(180) (620) 1500------≥10
(180) (620) 1500 230 208 416 624 832 1040 ≥10
190 630 1500 230 208 416 624 832 1040 ≥14
190 730 1500 230 208 416 624 832 1040 ≥14
222 764 1500 230 208 416 624 832 1040 ≥20
222 830 1500 230 208 416 624 832 1040 > 20
Note. Newly designed products do not use bracketed values.
Figure 2 Type II central groove
Table 2 mm
HAL L1 L2 L3 L4 L5 L6 S
222 630 1500 150 230 485 715 970 1200 ≥16
(220) 630 1500 (185) (226) (452) (678) (904) (1130) ≥16
222 730 1500 150 230 485 715 970 1200 ≥16
(220) 730 1500 (185) (226) (452) (678) (904) (1130) ≥16
222 730 1500 150 230 485 715 970 1200 ≥20
(220) 730 1500 (185) (226) (452) (678) (904) (1130) ≥20
222 830 1500 150 230 485 715 970 1200 > 20
Note. Newly designed products do not use bracketed values.
Figure 3 Type III central groove
Table 3 mm
HALS
125 280 1200 ≥4
150 320 1200 ≥6
150 420 1200 ≥6
4 Technical requirements
4.1 Basic requirements
4.1.1 The central groove shall comply with the requirements of this standard and shall be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures.
4.1.2 Medium single-chain, side double-chain and medium double-chain hot-rolled channel steel shall comply with the provisions of MT 149.
4.2 Structural requirements
4.2.1 The central groove steel and middle plate used for mechanized coal mining shall meet its supporting use of shearer and hydraulic support.
The need for force.
4.2.2 The middle groove of the installation baffle or coal shovel board shall be welded with supports on the grooves on both sides.
4.2.3 The middle groove adopts structures such as press-bend overlap or butt overlap in the middle plate.
4.2.4 The connecting device between the middle grooves shall ensure that the scraper conveyor or the transfer machine has good bending performance and a good
Alignment performance.
4.3 Performance requirements
4.3.1 The material selected for the central groove steel and the middle plate and connecting parts shall meet the requirements of strength, wear resistance and welding performance.
4.3.2 The central groove shall have sufficient mechanical strength, and various strength indexes shall meet the requirements of MT 102.
4.3.3 The strength and wear resistance of the central groove should meet the requirements for use, and the underground service life of the central groove should meet MT 105 Table 1 or MT
106 Table 1 provisions.
4.4 Manufacturing and assembly requirements
4.4.1 Raw materials and parts shall be inspected in accordance with their respective technical requirements to prove that their quality meets the technical requirements before they can be used.
4.4.2 All forgings shall meet the requirements of Q/ZB71.
4.4.3 The manufacture of hot-rolled channel steel in the central groove shall comply with the relevant provisions of the Ministry of Metallurgical Industry on the standard of hot-rolled channel steel for mining. Cold pressed groove steel
Meet the requirements of product design documents.
4.4.4 Each support shall be welded to the channel steel at its four corners (see Figure 1, Figure 2) .The welding strength of the support shall comply with the relevant requirements of MT 102.
Regulations.
4.4.5 The upper and lower parts of the middle slot plate are welded continuously or intermittently.The welding strength should meet the relevant regulations of MT 102 and use
With requirements.
4.4.6 The welding of the central groove shall comply with the relevant regulations of Q/ZB74.
4.4.7 Strengthening treatment shall be applied to the easily worn parts of the central groove steel.
4.4.8 After the middle groove is assembled, the top and bottom of the interface between the middle groove and the middle groove, between the middle groove and the adjustment groove, and between the middle groove and the transition groove
The staggered volume should be no more than 2mm, and the staggered volume should be no more than 3mm.
4.4.9 After the middle grooves are assembled, the maximum horizontal bending angle and vertical bending angle between the middle grooves should conform to the product design documents.
Regulations.
4.5 Appearance and Oil Quality Requirements
After the middle groove is qualified for processing and inspection, the surface should be painted, and the quality of the paint should meet the requirements of the product design documents.
4.6 Product Quality Assurance
In the case where the user complies with the storage, transportation, installation, and use regulations, within one year from the date of shipment by the manufacturer, any problem caused by manufacturing quality
In the event of damage or malfunction, the manufacturing unit shall repair or replace the product (parts) for the user free of charge.
5 Test method
The test items and methods of the central tank shall comply with the provisions of Chapter 4 and Chapter 5 of MT 102.
6 Inspection rules
6.1 General
6.1.1 Products must pass the inspection of the manufacturer's technical inspection department before leaving the factory. When leaving the factory, documents must be attached to prove that the product is qualified.
6.1.2 The test shall be arbitrarily selected in the middle groove of the finished product, and the sample shall not have any coating covering the defect.
6.1.3 The factory inspection is generally carried out in the manufacturer, and the type inspection should be carried out in the testing unit authorized by the state.
6.2 Product inspection category
Product inspection is divided into two types. factory inspection and type inspection.
6.3 Factory inspection of middle tank
6.3.1 The inspection items, inspection quantity and inspection requirements of the central tank are shown in Table 4.
Table 4
Product (Part) Name Inspection Item Inspection Quantity Inspection Requirements
1 central slot
Visual inspection, including geometry
Dimensional inspection, welding quality inspection
Check up
1 section per 100 section central groove
According to product design documents and this standard
3.2, 4.4.4, 4.4.5, 4.4.6 and
4.4.7 Provisions
Combined shape inspection
Each batch of products is based on the design document every quarter
It is required to take a whole scraper to transport
Middle slot
According to 4.4.8 and 4.4.9
2 Tensile strength test of connecting pin
3 Tensile strength test of connecting ears
4 Inspection of the tensile strength of the bezel support
2 per 1,000 knots
Pieces, each batch less than 1000 knots
Take 1
According to relevant regulations of MT 102
6.3.2 When all inspection items (parts) inspection items meet the inspection requirements, the batch of products is qualified.
If there is an inspection item in the tested product (part) that does not meet the inspection requirements, the test piece shall be doubled for inspection,
If the inspection results are all qualified, only the non-conforming products will be replaced or repaired, and the batch of products will still be qualified. If the inspection requirements are still not met
Conditions, the batch of products should be inspected piece by piece.
6.4 Central groove type inspection
6.4.1 Type inspection shall be carried out in one of the following situations.
a. Trial production of new products and production transformation;
b. When production resumes after two years of suspension;
c. When changing the design, process and materials of the product affects the performance of the product;
d. When the factory inspection results are significantly different from the last type inspection;
e. When a national quality supervision agency requests a type inspection.
6.4.2 The inspection items, inspection quantity, and inspection requirements for the central groove pattern are shown in Table 5.
table 5
Product (Part) Name Inspection Item Inspection Quantity Inspection Requirements
1 Horizontal bending test of the middle slot connecting mechanism
2 Vertical bending test of the middle slot connection mechanism
2 pieces (1 set)
3 Tensile strength test of the connecting pin in the middle groove
4 Vertical bending test of connecting pin in middle slot
5 Horizontal bending test of middle slot connecting pin
6 Tension test of middle slot connecting ear
7 Tensile test of the middle slot baffle support
1 item
8 Bend test of middle slot plate
9 Central groove mid plate arch test
10 Non-axial loading test of middle slot plate
11 Compression strength test of middle groove
12 Non-axial loading test of middle groove
13 Compressive strength test of middle groove floor
2 pieces
14 Central groove push-pull life test 3 pieces (1 group)
15 horizontal bending test of coal shovel plate or baffle (1 group)
According to relevant regulations of MT 102
6.4.3 When the central groove type inspection item meets the inspection requirements, the batch of product type inspection is qualified; if there is one item for each item being inspected
If it does not meet the inspection requirements, double-check the sample and this item. If all the doubled samples are qualified, the type inspection is qualified, otherwise it is not.
qualified.
7 Marking, packaging, transportation, storage
7.1 Signs
There should be our factory logo or mark on the middle groove.
7.2 Packaging, transportation and storage
The product can only be packed after passing the inspection. The quality of the packaging must ensure that the product (connecting parts) will not be lost or affected during transportation and storage.
Mechanical damage, with product quality certificate. The content of the certificate includes the specifications, quantity, inspection date and inspection personnel code, and shall comply with the MT
150 regulations.
Additional information.
This standard is proposed by the Technology Development Department of the Ministry of Coal Industry.
This standard was drafted by the Taiyuan Branch of the Coal Science Research Institute.
Qian Guansheng, the main drafter of this standard.
This standard entrusts Taiyuan Branch of Coal Science Research Institute with interpretation.
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