CN103510434A

CN103510434A - Wear-resisting tamping pickaxe

Info

Publication number: CN103510434A
Application number: CN201210199083.2A
Authority: CN
Inventors: 康小英; 欧阳肇一; 刘丽敏; 李垂辉
Original assignee: Xiangyang Boya Precision Industrial Equipments Co Ltd
Current assignee: Xiangyang Boya Precision Industrial Equipments Co Ltd
Priority date: 2012-06-18
Filing date: 2012-06-18
Publication date: 2014-01-15

Abstract

The invention provides a wear-resisting tamping pickaxe which is used in a tamping vehicle tamping ballast under a rail in the railway engineering field. A pickaxe rod and a pickaxe palm are of welded connection structures, wherein the pickaxe rod is made of a medium-carbon high-alloy high-strength material, formed in a forging mode and refined in a thermal mode, and the pickaxe palm is made of a high-carbon high-alloy wear-resisting material, formed in a forging mode and treated in a quenching and tempering mode. A locating pin made of a spring steel material and refined in a thermal mode is arranged in the upper-middle portion of the pickaxe palm and penetrates through the welded central portion of the pickaxe rod and the pickaxe palm. Hard alloy pieces do not need to be embedded, and the wear resistance of the pickaxe is equal to that of a traditional pickaxe embedded with the alloy pieces. Moreover, the problem of early failure due to falling of the alloy pieces can be avoided, instant high impact can be borne, small resistance exists when the ballast is tamped, and the production cost is lowered greatly. In addition, the pickaxe palm of the pickaxe can be replaced conveniently after wear-out failure in the use process, and can be used after being repaired, and therefore the cost is saved.

Description

A kind of wear-resisting tamping pickaxe

Technical field

The present invention relates to technical field of engineering machinery, is that a kind of railway engineering field is for the wear-resisting tamping pickaxe of tamping car of ballast aggregate under tamping track specifically.

Background technology

All the time, railway engineering tamping car generally adopts imported product with tamping pickaxe, whole adopt high carbon chromium material casting or with medium carbon steel, forge after at pick palm carbide inserts sheet, the life-span is longer, but price is very high; Domestic tamping pickaxe also adopts high-chromium material casting, pick palm head build-up wear-resistant material or puts on the technique manufactures such as pick boots (studding with hard metal tip), and price is lower but the life-span is very short.

Summary of the invention

For solving existing domestic tamping pickaxe life-span deficiency, the expensive problem of imported product, goal of the invention of the present invention is to provide a kind of wear-resisting tamping pickaxe, to realize, can obviously improve life of product, the object that can effectively reduce costs again.

For achieving the above object, the present invention includes pick bar, the pick palm and alignment pin, it is characterized in that: in employing carbon high alloy high-strength material and through the pick bar of forging molding, modifier treatment with adopt high-carbon high-alloy high-abrasive material and be solder joints structure through the pick palm of forging molding, the temper of quenching, adopt spring steel material and be positioned at Gao Zhang middle and upper part through the alignment pin of modifier treatment, through pick bar and pick, slap the centre of seam; The bus of the pick palm is positioned on the extension line of pick bar bus and ，Gao Zhang upper end Yu Gaogan bottom seam at an angle with it, the pick palm bus and its axis be an acute angle; Gao Gan bottom is useful on the groove that the protruding binding site with pick palm end coordinates; The Gao Zhang back side is useful on the pick palm in the work of bearing and with respect to pick bar, moves left and right the step key of power, the keyway laminating of the step key of the pick palm and pick bar; Gao Zhang bottom is rounding structure, and the front and back of the pick palm is acute angle, front and back form can reduce to smash into resistance inclined-plane.

Carbon high alloy high-strength material during pick bar adopts, carbon containing 0.4-0.6%, chromium 0.6-1.5%, manganese 0.5-1.2%, nickel 1.2-2.0%, molybdenum 0.2-0.6%, silicon 0.2-0.6%, vanadium 0.2-0.6%, forging molding, through modifier treatment.

The pick palm adopts high-carbon high-alloy high-abrasive material, carbon containing 1.0-2.0, and chromium 8-13%, manganese 0.5-1.2%, molybdenum 0.2-0.6%, silicon 0.2-0.5%, vanadium 0.2-0.5%, through forging molding, quenches, temper.

The present invention compared with prior art tamping pickaxe does not need carbide inserts sheet, the tamping pickaxe abrasion resistance of the abrasion resistance of tamping pickaxe and tradition edge alloy sheet is suitable, and can there is not because alloy sheet drops in advance the problem losing efficacy, can bear instantaneous high impact-resistant, and have less resistance when smashing into ballast aggregate, greatly reduce cost of production, the pick of tamping pickaxe is slapped in use after wear out failure, can be convenient for changing, after repairing, continue to use, cost-saving.

Accompanying drawing explanation

Fig. 1 is structure diagram of the present invention.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the pick palm of Fig. 1 and the enlarged drawing of pick bar binding site.

Fig. 4 is the front view of the pick palm of Fig. 1.

Fig. 5 is the lateral view of Fig. 4.

Fig. 6 is the top view of Fig. 4.

Fig. 7 is the rear elevation of Fig. 4.

The specific embodiment

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Fig. 7, carbon high alloy high-strength material during pick bar 1 adopts, carbon containing 0.4-0.6%, chromium 0.6-1.5%, manganese 0.5-1.2%, nickel 1.2-2.0%, molybdenum 0.2-0.6%, silicon 0.2-0.6%, vanadium 0.2-0.6%, forging molding, through modifier treatment, can bear instantaneous HI high impact, the bottom of pick bar 1 is useful on the groove of slapping the protruding binding site cooperation of 2 upper ends with pick, downward impact force when bearing work, the bulge-structure width that pick is slapped 2 upper ends is e, with the width of pick bar 1 fitting part plane be f, f>e, the edge line 11 of pick bar 1 lower end is a with the distance of dowel hole center line 5, dowel hole center line 5 is b with the distance of assembling fitting line 4, a<b, the pick palm 2 adopts high-carbon high-alloy high-abrasive material, carbon containing 1.0-2.0, chromium 8-13%, manganese 0.5-1.2%, molybdenum 0.2-0.6%, silicon 0.2-0.5%, vanadium 0.2-0.5%, through forging molding, the temper of quenching, high hardness wear-resisting, the bus of the pick palm 2 is positioned on the extension line of pick bar 1 bus and with it at an angle, the upper end of the pick palm 2 and the bottom seam of pick bar 1, 2 bus and its axis of the pick palm are an acute angle, the back side of the pick palm 2 is useful on the pick palm 2 in the work of bearing and with respect to pick bar 1, moves left and right the step key of power, the keyway laminating of the step key of the pick palm 2 and pick bar 1, with the strength that in the work of bearing, the pick palm moves left and right with respect to pick bar, key is wide is c, the bore dia that passes the alignment pin 3 of key is d, c>d, the bottom of the pick palm 2 is rounding structure, the front and back of the pick palm 2 is internal acute angle delta, the formed inclined-plane of front and back of the pick palm 2 is to reduce to smash the plane into resistance, avoid occurring larger wearing and tearing, it is all parallel that one section of outline line 6 that pick is slapped 2 lower ends and pick bar 1 lower edge outline line 11 and pick are slapped 2 top edge path of contacts 4, one section of edge wheel profile 7 and edge wheel profile 6 Chengγ angles, edge wheel profile 8 is vertical with edge wheel profile 6, edge wheel profile 9 and edge wheel profile 8 Chengβ angles, edge wheel profile 10 and edge wheel profile 9 Chengα angles, the bottom of pick bar 1 is processed after the groove of fitting with the upper lobes of the pick palm 2, by welding and alignment pin 3, the two is bonded together, adopt spring steel material and through the alignment pin 3 of modifier treatment, be positioned at the middle and upper part of the pick palm 2, through pick bar 1 and pick, slap the centre of 2 seam, after welding, long-time crash handling, can eliminate welding stress completely, after tested, the intensity of weld seam is greater than mother metal.

Claims

1. a wear-resisting tamping pickaxe, comprise pick bar (1), the pick palm (2) and alignment pin (3), it is characterized in that: in employing carbon high alloy high-strength material and through the pick bar (1) of forging molding, modifier treatment with adopt high-carbon high-alloy high-abrasive material and be solder joints structure through the pick palm (2) of forging molding, the temper of quenching.

2. a kind of wear-resisting tamping pickaxe according to claim 1, it is characterized in that: the bus of the pick palm (2) is positioned on the extension line of pick bar (1) bus and with it at an angle, (2) upper end of the pick palm and the bottom seam of pick bar (1), bus and its axis of (2) of the pick palm are an acute angle.

3. a kind of wear-resisting tamping pickaxe according to claim 1, is characterized in that: the bottom of pick bar (1) is useful on the groove of slapping the protruding binding site cooperation of (2) upper end with pick.

4. a kind of wear-resisting tamping pickaxe according to claim 1, it is characterized in that: the back side of the pick palm (2) is useful on the pick palm (2) in the work of bearing and with respect to pick bar (1), moves left and right the step key of power the pick palm step key of (2) and the laminating of the keyway of pick bar (1).

5. a kind of wear-resisting tamping pickaxe according to claim 1, is characterized in that: the bottom of the pick palm (2) is rounding structure, and the front and back of the pick palm (2) is acute angle, front and back form can reduce to smash into resistance inclined-plane.

6. a kind of wear-resisting tamping pickaxe according to claim 1, is characterized in that: adopt spring steel material and through the alignment pin (3) of modifier treatment, be positioned at the middle and upper part of the pick palm (2), the centre through pick bar (1) with (2) seam of the pick palm.

7. a kind of wear-resisting tamping pickaxe according to claim 1, it is characterized in that: carbon high alloy high-strength material during pick bar (1) adopts, carbon containing 0.4-0.6%, chromium 0.6-1.5%, manganese 0.5-1.2%, nickel 1.2-2.0%, molybdenum 0.2-0.6%, silicon 0.2-0.6%, vanadium 0.2-0.6%, forging molding, through modifier treatment.

8. a kind of wear-resisting tamping pickaxe according to claim 1, is characterized in that: the pick palm (2) adopts high-carbon high-alloy high-abrasive material, carbon containing 1.0-2.0, chromium 8-13%, manganese 0.5-1.2%, molybdenum 0.2-0.6%, silicon 0.2-0.5%, vanadium 0.2-0.5%, through forging molding, quenches, temper.