1224results about "Metal chains" patented technology

The invention relates to an automatic lifting feeding and discharging mechanism for a round metal rod, in particular to an automatic lifting mechanism for a round metal rod. According to the technical scheme provided for the mechanism in the invention, a discharge opening of a feed box is connected with a feed end of a lifting feeding machine and a discharge end of the lifting feeding machine is connected with a feed opening of a feeding and discharging machine; in the feed box, an inclined bottom plate of the feed box is arranged on the lower part of the feed box body, the lower end of the inclined bottom plate of the feed box is positioned at the discharge opening of the feed box, and a group of side plate fixing rods are respectively arranged on both the upper part and the lower part of the feed box; the inner ends of the side plate fixing rods are connected with a side regulating plate and the outer ends extend out of a side face of the feed box; and the side regulating plate is positioned on both sides of the inclined bottom plate of the feed box. The mechanism adopts an integrated mechanical, electric and hydraulic automatic lifting mechanism for the round metal rod and has the advantages of high production efficiency, high degree of automation, steady production process and safe reliability.

Disclosed are methods for producing an interlaced device or composition which includes at least a first and a second interlaced element. Each interlaced element includes a mated first and second part, the first part having two termini and the second part having two termini, and a defined central void through which the other interlaced element passes. The method includes the processing and mating of a first and a second substrate layer, each including a top surface, a bottom surface and a mating zone. The first substrate layer includes a portion corresponding to a first part of a first interlaced element and a first part of a second interlaced element. The second substrate layer includes a portion corresponding to a second part of a first interlaced element and a second part of a second interlaced element. Also disclosed are interlaced devices or compositions.

The linked bracelet, in particular for a watch, comprises a metal hinged chain passing through a series of ornamental tubular links (4) made of ceramic material, each ornamental link (4) having at least one longitudinal passage (20), in which a metal link and a hinge associated with it are housed and can rest against an inside surface (26) of the base (27) of the ornamental link in the region of the hinge, when the hinge is in a folded position. A front face (23) of each ornamental link (4) has at least one raised section (34) located in the same region of the width of the ornamental link as said inside surface (26) where the hinge or the metal link rests, this raised section being arranged to abut against the opposite front face (24) of the adjacent ornamental link when the hinge is in said folded position. This arrangement balances the vertical force (F) exerted by the chain on the base (27) of the ornamental link at the right place and thus prevents any risk of fracture by transverse bending.

A lobed bushing is provided for a track assembly of a track-type machine. The track assembly includes a first chain and a second chain coupled together with a track pin. A bushing, defining a longitudinal axis, includes a central bore oriented along the longitudinal axis and extending from a first end of the bushing to a second end of the bushing for receiving the track pin. The bushing includes a first lobe positioned at a first location about the longitudinal axis and a second lobe positioned at a second location about the longitudinal axis that is less than about 180° from the first location. The first end of the bushing has a substantially cylindrical shape.

In a travelling crawler belt in which a pair of left and right links are connected by pins respectively press-fitted into the corresponding links, a fixing end surface of the pin or the links is continuously and locally pressed and deformed in an axial direction of the pin from the fixing end surface, along an inner or outer peripheral portion of an opening of a pin-press-fit hole. Then, a part of the opening peripheral portion of the end of the pin or the link is enlarged or reduced in diameter, so that the diametrically increased or reduced portion is retained and fixed to a mating retaining space. With this fixing method, it is possible to easily and strongly couple the links and the pin, and to obtain a fixing structure of the links and the pin for a crawler belt capable of sufficiently securing a holding force of the pin in the axial direction. When the pin is fixed at the time of the assembling of the pin, an existing press can be used without requiring any exclusive machine, and it is possible to easily and reliably assemble the links and the pin for the crawler belt.

A gray-scale power supply line supplied to a source signal line driving circuit is made only one system, and each of D/A conversion circuits drives source signal lines in which three source signal lines corresponding to RGB are made a unit and the number of which is a multiple of 3. The periods in which respective source line selecting circuits select source signal lines corresponding to respective colors of the RGB are made synchronous with each other, and the power supply voltage applied to the gray-scale power supply line is changed in one horizontal writing period, so that power supply voltages corresponding to R, G and B are respectively applied to the gray-scale power supply line in periods while the source signal lines of R, G and B are respectively selected.

A track shoe connecting link 25 has shaft holes 31, 32 at both end portions. In the track shoe connecting link 25, a plurality of insertion holes 39 are formed between the shaft holes 31, 32, and window holes 40, 41 are formed so as to correspond to each insertion hole 39. A bolt 43 is inserted through each of the insertion holes 39 and a nut 44 is screwed onto a distal end of the bolt 43 in each of the window holes 40, 41. Accordingly, the track shoe connecting link 25 is fixed to a track shoe 26. The area of the window hole 41 that is adjacent to the second shaft hole 32 is greater than the area of the window hole 40. Accordingly, the rigidity of the track shoe connecting link 25 becomes smaller toward the second shaft hole 32.

In each of track links (14) forming a crawler belt (13), an engaging projection (23) engaging to a drive wheel (11) is provided on a drive wheel abutting surface (22) abutting on the drive wheel (11). A fitting groove (27) composed of a bottomed recessed groove is provided on a ground contact surface (26) at the opposite side to the drive wheel abutting surface (22) in the upper-lower direction in a position corresponding to the engaging projection (23). Thereby, at the time of stacking up the track links (14) in the upper-lower direction, the fitting groove (27) of the upper track link (14) can be fitted into the engaging projection (23) of the lower track link (14).

There are proposed a track link production method capable of providing markedly improved wear life with good cost performance and a track link produced by this method. To this end, the track link production method includes a heat treatment process (Steps 4, 5) of applying quenching and low temperature tempering treatment to a whole link material after hot forging (Step 2), and is designed such that desired machining is applied to the link material (Step 3) before the heat treatment process (Steps 4, 5) and such that after the heat treatment process (Steps 4, 5), tempering (Step 6) and finish machining (Step 7) are sequentially applied to some of the parts which have undergone the machining process, the some parts including at least parts where high dimensional accuracy is required.

Joint assemblies are useful for connecting one structure to another structure. When the various structures deflect or bend, edge loading occurs therebetween. The subject joint assembly includes a pin positioned between a first and second structure. An insert is free floating positioned around the pin for contacting either of the first or second structures. A crown shaped surface is utilized on the insert at a substantially central location therealong. The crown shaped surface directs forces to the center of the insert to reduce edge loading.

A portable disassembly tool is provided to disassemble a track link assembly from a machine by removing opposed track links from the track link assembly. The portable disassembly tool includes first and second members that are tightly secured to the track link to be removed by a plurality of fasteners. The second member has clearance holes therein to freely receive the ends of the associated track pin assemblies. A third member having spacer members extending therefrom is disposed adjacent to the second member with the spacer members extending into the respective clearance holes into contact with the ends of the track pin assemblies and secured to the second member by a second plurality of fasteners. By alternately tightening the plurality of fasteners, the track link is pulled from the associated track pin assemblies. During the removal of the track link, binding in any direction is overcome.

The present invention provides a portable machine for assembling a track for a track type work machine. A positioning block is provided for alignment of a pair of track pins that are to receive an outer track joint. A portable assembly tool having a pair of contact tools is adapted to receive a pair of outer track joints. The assembly tool is positioned over the positioning block and a hydraulic ram is extended to press each of the outer track links onto the track pins. The present invention is used with track assemblies that do not require master links.

A track shoe for a crawler track has a hollow body with top and bottom sections and perimeter side walls defining a void therebetween. A supporting pillar is located in the void and extends between the top and bottom sections. The pillar is located in the main loadbearing region of the shoe and bears most of the load on the shoe. This enables the thickness of the side walls to be minimized. The shoe can be manufactured more efficiently by complementing foundry methods.

A link has link connecting bores (15) and (16) at both ends thereof and a wear rail (13) disposed between the upper portions of the link connecting bores (15) and (16). Portions near the ends of the wear rail (13) are designed to have hardness smaller than that of a center portion of the wear rail. Accordingly, the portions near the ends of the wear rail can be abraded easier than the center portion of the wear rail. Since the portions near the ends of the wear rail, in which the portions are easily abraded, are positioned closer to the link connecting bores, abrasion loss in use is smaller than that of the center portion owing to its structure. So, the difference in abrasion amount makes it possible to lower a level irregularity of the wear rail.

A machine is provided including a frame and at least one track, such as first and second ground engaging tracks, coupled with the frame. A plurality of pins are provided which each couple together at least two of the links of the tracks and include an outer diameter, a first end and a second end. The first and second ends of the pin may be press fit in first and second bores of first and second links of the tracks, respectively. A non-directional surface finish along a first portion of the length of the pin within the first bore forms a fluid seal with the first bore, whereas a directional surface finish along a different portion of the length of the pin within the first bore inhibits removal of the first end of the pin from the first bore. A method of coupling together machine components via an enhanced press fit is further provided, utilizing a pin having a first surface finish configured to form a fluid seal with a bore of a machine component, and a second surface finish configured to inhibit removal of the pin from the bore.

The invention relates to a production method of a metal chain ring, in particular to an automatic tandem connection and knitting method of a circular ring chain forged with metal and a device thereof. The method has the following steps: a bent ring bar stock is automatically delivered into a chain bending mechanism, and gripped by a mechanical hand, and first bent to be U-shaped under the effect of left and right chain bending rollers; the U-shaped ring penetrates into two knitted and forged rings and is delivered to a core die through the functions of the mechanical hand, a delivering chain inlet and outlet batch bin mechanism, and a core die mechanism; according to the shape of the core die, the U-shaped ring is automatically bent into the circular ring chain with only one step, thereby the tandem connection and the knitting of the circular ring chain is completed. Then an upper core die is elevated and opened, the mechanical hand takes out the well bent ring chain from the core die, the delivering chain inlet and outlet batch bin mechanism lowers and delivers out the well knitted chain, so that the next bent ring bar stock enters into the chain bending mechanism, and automatic repeating and circulation are continued. The invention proposes the automatic tandem connection and knitting method of the circular ring chain forged with metal with mechanical-electric-hydraulic integration and the device thereof, thereby having the advantages of high production efficiency, stable product quality, high degree of automation, and safe and reliable production process.

A roller element (10) is provided which has a central body (1) and a roller unit (2). The roller unit (2) is mounted so as to circulate on a non-circular race (21) about the central body (1) and so as to be mobile with respect to the central body (1) by the rolling movement of the rollers (3) of the roller unit (2) on the central body (1). The rollers (3) are configured as balls or substantially cylindrical elements. A peripheral surface of the rollers (3), for a substantial part, is shaped as a rolling surface that corresponds to the central body (1) and for rolling off on the central body (1). The elements of the roller unit (2) have play in relation to one another and/or the roller unit has play regarding its mobility in relation to the central body (1).

A chain link plate includes an elliptical plate body having opposite first and second surfaces, and two mounting holes spaced apart from each other in a longitudinal direction of the plate body and extending from the first surface to the second surface. The plate body has a central longitudinal line that passes through centers of the mounting holes, and two transverse lines that pass respectively through the centers of the mounting holes and that are perpendicular to the central longitudinal line. The plate body has an intermediate juncture portion defined between the transverse lines, and opposite end portions integrally and respectively connected to opposite ends of the intermediate juncture portion. The intermediate juncture portion has a largest width greater than that of each of the end portions.