Tail shield grease block and processing method thereof

Abstract

The present invention discloses a tail shield grease block and a processing method thereof, wherein the grease block comprises a plurality of grease block main bodies, wherein the grease block main body is a rectangular arc plate structure welded by a front section of the grease block main body and a rear section of the grease block main body, and the thickness of the rear section of the grease block main body is 10 mm less than the thickness of the front section of the grease block main body; the inner wall of the grease block main body is provided with short grease grooves and long grease grooves parallel to each other, and the short grease grooves and the long grease grooves of the inner wall of the grease block main body are welded with cover plates, and grease holes are provided at the ends of the cover plates; the plurality of grease block main bodies are welded with other shells to form a tail shield. The present invention divides the shell into several parts, and the long grooves of the grease block are advanced to be processed before welding, and then the grease blocks and the shield shell are welded together to form a tail shield after completion, thereby avoiding the need for large-scale equipment to process the grease grooves after welding is completed, reducing the difficulty of processing and the flexibility of selecting processing equipment, and the present invention has a short production cycle, low cost, easy processing, and convenient operation.

Description

Technical Field

[0001] The invention relates to a tail shield grease block and a processing method thereof, belonging to the technical field of shield machines. Background Art

[0002] The shield body of the shield machine mainly consists of the front shield, the middle shield and the tail shield. The diameter of the shield body is about 6.5m, which is a heavy-duty machined part. The tail shield of the shield machine is equipped with a long groove for grease to pass through. The grease groove is generally processed after the welding of the tail shield shell is completed, and then the cover of the grease groove is welded. Due to the large diameter of the shield body and the heavy weight, the processing of the grease groove needs to be arranged on a large boring and milling machine. The hoisting and positioning are inconvenient and require tooling assistance. There are seven groups of such grease long grooves on the tail shield. Before the workpiece is put on, the fitter needs to mark the processing positioning line of the grease long groove on the tail shield body and punch it out. Then the boring machine bores the long groove according to the positioning line marked by the fitter, and drills a hole for grease at the end of the long groove. After the processing is completed, the grease groove cover is welded. The workpiece needs to be hoisted seven times to complete the processing, which leads to a long processing cycle, high cost, low efficiency, and long-term occupation of large equipment ( Figure 5 The figure shows the processing status of the shield body boring and milling grease groove). Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a tail shield grease block and a processing method thereof in view of the defects in the prior art.

[0004] To solve this technical problem, the present invention provides a tail shield grease block, comprising a plurality of grease block main bodies, wherein the grease block main bodies are rectangular arc plate structures welded by a front section of the grease block main body and a rear section of the grease block main body, and the thickness of the rear section of the grease block main body is 10 mm less than the thickness of the front section of the grease block main body; short grease grooves and long grease grooves parallel to each other are provided on the inner wall of the grease block main body, and cover plates are welded to the short grease grooves and the long grease grooves on the inner wall of the grease block main body, and grease holes are provided at the ends of the cover plates; the plurality of grease block main bodies are welded with other shells to form a tail shield.

[0005] The short grease groove and the long grease groove are both composed of a front section grease groove and a rear section grease groove, wherein the front section grease grooves of the short grease groove and the long grease groove are of the same length; the rear section grease groove is 5mm deeper than the bottom wall of the front section grease groove.

[0006] The cover plate includes a front cover plate, a rear cover plate 1 and a rear cover plate 2, wherein the front cover plate is welded to the front grease grooves of the short grease groove and the long grease groove, the rear cover plate 1 is welded to the rear grease groove of the short grease groove, and the rear cover plate 2 is welded to the rear grease groove of the long grease groove.

[0007] The front cover plate is 5 mm thicker than the rear cover plate 1 and the rear cover plate 2. After welding, the upper planes of the front cover plate, the rear cover plate 1 and the rear cover plate 2 are flush with the upper plane of the grease block body.

[0008] The long grease groove is 710 mm longer than the short grease groove.

[0009] The front section of the grease block body and the rear section of the grease block body are both made by slotting steel plates; the front cover plate, the first rear cover plate and the second rear cover plate are all made of steel plates.

[0010] The present invention also provides a method for processing a tail shield grease block, comprising the following steps:

[0011] 1) First, cut the front and rear sections of the tail shield shell according to the size, and cut the front cover plate, rear cover plate 1, and rear cover plate 2 according to the drawing;

[0012] 2) Roll the front and rear sections of the tail shield shell into a cylinder, where the inner diameter of the rear section is 20 mm larger than that of the front section. Weld the two sections and cut them into rectangular arc plates, i.e. the main body of the grease block;

[0013] 3) A short grease groove and a long grease groove are opened on the main body of the grease block, and the rear section of the grease groove is 5mm deeper than the bottom wall of the front section; a circular through hole, i.e., a grease hole, is processed at the chamfered ends of the front cover plate, the first rear cover plate, and the second rear cover plate;

[0014] 4) The front cover is welded to the front grease groove of the grease block body; the rear cover 1 and the rear cover 2 are welded to the rear grease groove of the grease block body.

[0015] Beneficial effects: The present invention divides the shell into several parts, and processes the long groove of the grease block before welding. After completion, the grease blocks and the shield shell are welded together to form a tail shield, avoiding the need for large-scale equipment to process the grease groove after welding, reducing the processing difficulty and improving the flexibility of selecting processing equipment. The present invention shortens the production cycle, reduces costs, and has the advantages of saving resources, easy processing, and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic front view of the structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 AA cross-sectional view of ;

[0018] Figure 3 For the present invention Figure 2 BB cross-sectional view;

[0019] Figure 4 For the present invention Figure 2 Schematic diagram of CC cross-section;

[0020] Figure 5It is a schematic diagram of the processing state of shield body boring and milling grease groove in the prior art.

[0021] In the figure: 1 front section of the grease block body, 2 rear section of the grease block body, 3 front cover plate, 4 rear cover plate 1, 5 rear cover plate 2, 6 short grease groove, 7 long grease groove. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 Shown is a schematic front view of the structure of the present invention.

[0024] The invention provides a tail shield grease block, comprising a plurality of grease block main bodies, wherein the plurality of grease block main bodies are welded together with other shells to form a tail shield.

[0025] The grease block body is a rectangular arc plate structure formed by welding the front section 1 of the grease block body and the rear section 2 of the grease block body; the inner wall of the grease block body is provided with a short grease groove 6 and a long grease groove 7 which are parallel to each other, and a cover plate is welded to the short grease groove 6 and the long grease groove 7 of the inner wall of the grease block body, and a grease hole is provided at the end of the cover plate.

[0026] The thickness of the rear section 2 of the grease block body is 10 mm less than the thickness of the front section 1 of the grease block body.

[0027] Figure 2 The present invention is shown Figure 1 AA cross-sectional view of .

[0028] The short grease groove 6 and the long grease groove 7 are both composed of a front section grease groove and a rear section grease groove, wherein the front section grease grooves of the short grease groove 6 and the long grease groove 7 are of the same length; the rear section grease groove is 5mm deeper than the bottom wall of the front section grease groove.

[0029] The long grease groove 7 is 710 mm longer than the short grease groove 6 .

[0030] Figure 3 The present invention is shown Figure 2 BB cross-sectional view.

[0031] Figure 4 The present invention is shown Figure 2 Schematic diagram of CC cross-section.

[0032] The cover plate includes a front cover plate 3, a rear cover plate 1 4 and a rear cover plate 2 5. The front cover plate 3 is welded to the front grease grooves of the short grease groove 6 and the long grease groove 7, the rear cover plate 1 4 is welded to the rear grease groove of the short grease groove 6, and the rear cover plate 2 5 is welded to the rear grease groove of the long grease groove 7.

[0033] The rounded ends of the front cover plate 3, the rear cover plate 1 4 and the rear cover plate 2 5 are provided with circular through holes.

[0034] The front cover plate 3 is 5 mm thicker than the rear cover plate 1 4 and the rear cover plate 2 5 . After welding, the upper planes of the front cover plate 3 , the rear cover plate 1 4 and the rear cover plate 2 5 are flush with the upper plane of the grease block body.

[0035] The front section 1 of the grease block body and the rear section 2 of the grease block body are both made by slotting steel plates.

[0036] The front cover plate 3, the rear cover plate 1 4 and the rear cover plate 2 5 are all made of steel plates.

[0037] The present invention also provides a method for processing a tail shield grease block, comprising the following steps:

[0038] 1) First, cut the front and rear sections of the tail shield shell according to the size, and cut the front cover plate 3, the rear cover plate 1 4, and the rear cover plate 2 5 according to the drawing;

[0039] 2) Roll the front and rear sections of the tail shield shell into a cylinder, where the inner diameter of the rear section is 20 mm larger than that of the front section. Weld the two sections and cut them into rectangular arc plates, i.e. the main body of the grease block;

[0040] 3) A short grease groove 6 and a long grease groove 7 are opened on the main body of the grease block, and the rear section of the grease groove is 5 mm deeper than the bottom wall of the front section; rounded ends of the front cover plate 3, the rear cover plate 1 4 and the rear cover plate 2 5 are processed with circular through holes, i.e., grease holes;

[0041] 4) The front cover plate 3 is welded to the front grease groove of the grease block body; the rear cover plate 1 4 and the rear cover plate 2 5 are welded to the rear grease groove of the grease block body.

[0042] The present invention divides the shell into several parts, and the long groove of the grease block is processed before welding. After the processing is completed, the various grease blocks and the shield shell are welded together to form a tail shield, thereby avoiding the need for large-scale equipment to process the grease groove after welding, reducing the processing difficulty and improving the flexibility of selecting processing equipment. The present invention shortens the production cycle, reduces costs, and has the advantages of saving resources, easy processing, and convenient operation.

[0043] The above embodiments of the present invention are merely illustrative and not exclusive, and all modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A method for processing a tail shield grease block, the tail shield grease block comprising a plurality of grease block main bodies, the grease block main body being a rectangular arc plate structure welded by a front section (1) of the grease block main body and a rear section (2) of the grease block main body, the thickness of the rear section (2) of the grease block main body being 10 mm less than the thickness of the front section (1) of the grease block main body; a short grease groove (6) and a long grease groove (7) parallel to each other are arranged on the inner wall of the grease block main body, the short grease groove (6) and the long grease groove (7) of the inner wall of the grease block main body are both welded with a cover plate, the cover plate comprising a front cover plate (3), a rear cover plate 1 (4) and a rear cover plate 2 (5), and a grease hole is arranged at the end thereof; the plurality of grease block main bodies are welded with other shells to form a tail shield; the characteristics are as follows: The processing method comprises the following steps: 1) First, cut the front and rear sections of the tail shield shell according to the size, and cut the front cover plate (3), rear cover plate 1 (4), and rear cover plate 2 (5) according to the drawing; 2) Roll the front and rear sections of the tail shield shell into a cylinder, where the inner diameter of the rear section is 20 mm larger than that of the front section. After welding the two sections, cut them into rectangular arc plates, i.e. the main body of the grease block; 3) A short grease groove (6) and a long grease groove (7) are formed on the main body of the grease block, wherein the rear section of the grease groove is 5 mm deeper than the bottom wall of the front section; a circular through hole, i.e., a grease hole, is formed on the chamfered ends of the front cover plate (3), the first rear cover plate (4), and the second rear cover plate (5); 4) The front cover plate (3) is welded to the front grease groove of the grease block body; the rear cover plate 1 (4) and the rear cover plate 2 (5) are welded to the rear grease groove of the grease block body.

2. The method for processing the tail shield grease block according to claim 1, characterized in that: The short grease groove (6) and the long grease groove (7) are both composed of a front section grease groove and a rear section grease groove, wherein the front section grease grooves of the short grease groove (6) and the long grease groove (7) are of equal length; and the rear section grease groove is 5 mm deeper than the bottom wall of the front section grease groove.

3. The method for processing the tail shield grease block according to claim 1, characterized in that: The front cover plate (3) is welded to the front grease grooves of the short grease groove (6) and the long grease groove (7), the rear cover plate 1 (4) is welded to the rear grease groove of the short grease groove (6), and the rear cover plate 2 (5) is welded to the rear grease groove of the long grease groove (7).

4. The method for processing the tail shield grease block according to claim 3, characterized in that: The front cover plate (3) is 5 mm thicker than the rear cover plate 1 (4) and the rear cover plate 2 (5). After welding, the upper planes of the front cover plate (3), the rear cover plate 1 (4) and the rear cover plate 2 (5) are flush with the upper plane of the grease block body.

5. The method for processing the tail shield grease block according to claim 1, characterized in that: The long grease groove (7) is 710 mm longer than the short grease groove (6).

6. The method for processing the tail shield grease block according to any one of claims 1 to 5, characterized in that: The front section (1) of the grease block body and the rear section (2) of the grease block body are both made of steel plates through slotting; the front cover plate (3), the first rear cover plate (4) and the second rear cover plate (5) are all made of steel plates.

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