A traction swage chain for a drag scraper

Abstract

The present application relates to a slag conveyor related equipment technical field, specifically to a kind of traction die forging chain for slag conveyor, traction die forging chain for slag conveyor includes multiple inner links, outer links and pin shaft, outer link and inner link are alternately arranged along conveying circuit;Two ends of inner link are provided with first mounting hole;Two ends of outer link are provided with second mounting hole, pin shaft simultaneously penetrates first mounting hole and second mounting hole;Between pin shaft and the second mounting hole on the overhanging top of outer link, between pin shaft and first mounting hole, between pin shaft and the second mounting hole on the overhanging bottom of outer link, all form liquid storage area;Four groups of elastic sealing members are sleeved on each pin shaft, four groups of elastic sealing members are spaced apart along the axial direction of pin shaft, and are respectively sealed at the two ends of liquid storage area, to form three sealed cavities, each sealed cavity is filled with liquid, so that inner link, outer link and pin shaft are flexibly connected, to reduce the wear between inner link, outer link and pin shaft.

Description

Technical Field

[0001] This invention relates to the technical field of slag removal machine equipment, and in particular to a traction forged chain for a slag removal machine. Background Technology

[0002] A slag remover is a device used to remove and transport slag from boilers or other high-temperature furnaces. It is widely used in thermal power plants, metal smelting and other fields. Its main function is to remove slag from the high-temperature molten pool and transfer it safely and effectively to storage or treatment facilities through processes such as cooling, granulation and transportation.

[0003] There are many types of slag removers. According to different working principles, they can be divided into scraper slag removers, dry slag removers, spiral slag removers, chain bucket slag removers, etc. Among them, scraper slag removers are the most common type. When working, they use scraper chains to transport the bottom slag to the next level of storage or conveying equipment.

[0004] There are two common types of scraper chains. One type is the circular link chain, which is formed by bending and welding bar stock and using an interlocking connection method. The other type is the die-forged chain, which is made by precision die forging and consists of fork-shaped scraper links and transition inner links. The links are connected by anti-rotation pins.

[0005] In related technologies, such as Chinese patent CN209655321U, a forged chain for a scraper slag remover is disclosed. The forged chain for a scraper slag remover includes an inner chain plate, an outer chain plate, a shoulder-type pin that passes sequentially through a cylindrical transmission hole on an outer chain plate, a semi-cylindrical arc-shaped transmission hole on an inner chain plate, and a cylindrical transmission hole on another outer chain plate, connecting the inner and outer chain plates together, a retaining ring installed on the end of the shoulder-type pin, a non-metallic elastic locking pin with a radial hole installed in the center hole at the end of the shoulder-type pin, and a locking pin with chamfered coarse cylinders at both ends and a thin shaft in the middle.

[0006] Although the forged chain of the scraper slag remover has higher strength than the traditional round link chain, it has been found in actual use that, due to the rigid contact between the shoulder pin and the inner and outer link plates, the wear between the shoulder pin and the inner and outer link plates is quite severe after long-term use. This results in a shorter service life of the forged chain, requiring frequent replacement, and also causes gaps to appear between the shoulder pin and the inner and outer link plates, leading to greater vibration during slag removal and affecting the conveying of slag. Summary of the Invention

[0007] Therefore, it is necessary to provide a traction forged chain for slag removers to address the problems of short service life, high vibration and poor stability of current scraper chains.

[0008] The above objectives are achieved through the following technical solutions:

[0009] A traction forged chain for a slag remover, wherein the traction forged chain for the slag remover forms a closed conveying circuit on the slag remover body; the traction forged chain for the slag remover comprises:

[0010] Multiple inner links, each of which has a first mounting hole at both ends;

[0011] Multiple outer links are arranged alternately with the inner links along the conveying circuit; each outer link has a second mounting hole at both ends, the outer link has an I-shaped structure, and the second mounting hole penetrates the suspended top and suspended bottom of the outer link on the same side;

[0012] Multiple pins are provided, each pin passing through both the first and second mounting holes to create a hinged connection between adjacent outer and inner links. Liquid storage areas are formed between the pins and the second mounting holes on the top of the outer links, between the pins and the first mounting holes, and between the pins and the second mounting holes on the bottom of the outer links. Each pin is fitted with four sets of elastic seals, spaced apart axially and sealing both ends of the liquid storage areas to form three sealed cavities, each filled with liquid. A stop protrusion is fixedly provided at the bottom of each pin, stopping the bottom of the outer link, and a stop pin is detachably provided at the top of each pin, stopping the top of the outer link.

[0013] Furthermore, the traction forged chain for the slag remover also includes an adjustment unit, which is configured to adjust the volume of the sealing cavity inversely proportional to the magnitude of the tension when the inner chain link is under tension.

[0014] Furthermore, the adjusting part is configured as a frustum-shaped structure and is fixedly sleeved on the pin. The small end of the adjusting part is oriented towards the stop protrusion, and the conical surface of the adjusting part is guided and engaged with the inner peripheral wall of the first mounting hole.

[0015] Furthermore, the traction forging chain for the slag remover also includes three extrusion rings, which are sleeved on the pin and can move axially synchronously with the pin, and are respectively located in the sealing cavity.

[0016] Furthermore, the compression ring is configured as a conical structure, with the small end facing the stop pin.

[0017] Furthermore, both the first mounting hole and the second mounting hole are provided with a partially conical structure, with the smaller end facing the stop pin.

[0018] Furthermore, the liquid includes lubricating hydraulic oil.

[0019] Furthermore, each set of resilient seals includes multiple resilient seals.

[0020] Furthermore, the resilient seal includes a disc spring.

[0021] Furthermore, the traction forged chain for the slag remover is manufactured using a precision forging process.

[0022] The beneficial effects of this invention are:

[0023] This invention provides a traction forged chain for a slag remover. During installation, firstly, a second mounting hole for an outer link and a first mounting hole for an inner link are aligned. Then, a pin is simultaneously passed through both the first and second mounting holes to create a hinged connection between the inner and outer links. Next, four sets of elastic seals are installed at both ends of the second mounting hole of the outer link, forming three sealed cavities. A stop pin is then installed at the top of the pin to stop the suspended top of the outer link. Liquid is then filled into the three sealed cavities. After filling, multiple inner and outer links are connected in the order of inner link, pin, outer link, pin, or outer link, pin, inner link, pin, forming a closed conveying circuit. By setting a flexible rotating connection between the inner and outer links and the pin, wear between them is reduced, extending the service life of the traction forged chain for the slag remover. Furthermore, the elastic seals reduce vibration intensity, improving stability during slag transport.

[0024] Furthermore, by setting an adjustment mechanism, the volume of the sealing cavity can be adjusted inversely according to the tension of the inner link during use. When the tension of the inner link is large, the adjustment mechanism adjusts the volume of the sealing cavity to be smaller and the liquid pressure to be larger, thereby increasing the connection strength between the inner link, outer link, and pin. This ensures smooth chain operation and reduces chain vibration. Conversely, when the tension of the inner link is small, the adjustment mechanism adjusts the volume of the sealing cavity to be larger and the liquid pressure to be lower, thereby reducing the connection strength between the inner link, outer link, and pin and minimizing wear.

[0025] Furthermore, by setting a compression ring, the volume of the sealing cavity can be quickly changed when the pin slides axially. This allows for a rapid change in the liquid pressure, which in turn quickly alters the connection strength between the inner and outer links and the pin, ensuring timeliness. Attached Figure Description

[0026] Figure 1This is a three-dimensional structural diagram of a traction forged chain for a slag remover assembled on the slag remover body according to an embodiment of the present invention.

[0027] Figure 2 This is a three-dimensional structural schematic diagram of a traction forged chain for a slag remover provided in an embodiment of the present invention;

[0028] Figure 3 This is a three-dimensional structural schematic diagram of a single component of a traction forged chain for a slag remover provided in an embodiment of the present invention;

[0029] Figure 4 This is a top view of a single component of a traction forged chain for a slag remover according to an embodiment of the present invention;

[0030] Figure 5 for Figure 4 Sectional view along the AA direction;

[0031] Figure 6 This is a front view structural schematic diagram of a single component of a traction forged chain for a slag remover provided in an embodiment of the present invention;

[0032] Figure 7 for Figure 6 Sectional view along the BB direction;

[0033] Figure 8 This is a three-dimensional structural diagram of the inner link of a traction forged chain for a slag remover according to an embodiment of the present invention;

[0034] Figure 9 This is a three-dimensional structural diagram of the outer link of a traction forged chain for a slag remover according to an embodiment of the present invention;

[0035] Figure 10 This is a three-dimensional structural diagram of the pin shaft of a traction forged chain for a slag remover provided in an embodiment of the present invention.

[0036] in:

[0037] 1. Inner link; 101. First mounting hole; 11. Retaining ring;

[0038] 2. Outer link; 201. Second mounting hole;

[0039] 3. Pin; 301. Sealing cavity; 302. Insertion hole; 31. Protruding stop; 32. Stop pin; 33. Insertion ring;

[0040] 4. Adjustment section;

[0041] 5. Extrusion ring;

[0042] 6. Disc spring;

[0043] 7. Slag removal machine body. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0045] The serial numbers assigned to components in this document, such as "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used herein, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] like Figure 1 As shown, in one embodiment of the present invention, the traction forged chain for the slag remover is assembled on the slag remover body 7, and a closed conveying circuit is formed on the slag remover body 7; wherein the structure for driving the traction forged chain for the slag remover and the structure for removing slag are both prior art and will not be described in detail.

[0048] like Figures 2 to 10As shown, the traction forged chain for the slag remover provided in the above embodiment is configured to include multiple inner chain links 1, multiple outer chain links 2, and multiple pins 3; each inner chain link 1 has a first mounting hole 101 at both ends; the outer chain links 2 and inner chain links 1 are arranged alternately along the conveying loop; each outer chain link 2 has a second mounting hole 201 at both ends, the outer chain link 2 has an I-shaped structure, and the second mounting hole 201 penetrates the suspended top and suspended bottom of the outer chain link 2 on the same side; the pins 3 are configured to penetrate both the first mounting hole 101 and the second mounting hole 201, so that adjacent outer chain links 2 and inner chain links 1 form a hinged fit; the pins 3 and the suspended top of the outer chain links 2 have... Liquid storage areas are formed between the second mounting holes 201, between the pin 3 and the first mounting hole 101, and between the second mounting holes 201 on the suspended bottom of the pin 3 and the outer link 2. Each pin 3 is fitted with four sets of elastic seals, which are arranged at intervals along the axial direction of the pin 3 and are respectively sealed at both ends of the liquid storage area to form three sealing cavities 301, each of which is filled with liquid. Each pin 3 has a fixed stop protrusion 31 at its bottom end, which stops at the suspended bottom of the outer link 2. Each pin 3 has a detachable stop pin 32 at its top end, which stops at the suspended top of the outer link 2.

[0049] Specifically, in this embodiment, such as Figure 8 As shown, the inner link 1 is configured as a strip-shaped block structure. Two first mounting holes 101 are arranged at intervals along the extension direction of the inner link 1 and are both located near the end. The first mounting holes 101 are vertically and penetratingly opened on the upper and lower end faces of the inner link 1. On the inner link 1, a retaining ring 11 is coaxially and fixedly installed at the top of each first mounting hole 101; as shown Figure 9 As shown, the outer link 2 is configured as an I-shaped block structure, and the second mounting hole 201 is vertically and through-hole opened at the top of the outer link 2; as Figure 5 As shown, one set of elastic seals is located between the top side of the stop pin 32 and the top of the suspended top of the outer link 2, one set of elastic seals is located between the bottom side of the suspended top of the outer link 2 and the top of the stop ring 11, one set of elastic seals is located between the bottom of the first mounting hole 101 on the inner link 1 and the top side of the suspended bottom of the outer link 2, and the last set of elastic seals is located between the bottom side of the suspended bottom of the outer link 2 and the stop protrusion 31.

[0050] like Figure 10 As shown, the retaining protrusion 31 is a solid bowl-shaped structure, and the pin 3 and the retaining protrusion 31 together form a T-shaped rotating structure; to facilitate the installation of the retaining pin 32, an insertion hole 302 is vertically provided on the circumferential side wall of the end of the pin 3 away from the retaining protrusion 31; as shown Figure 4 As shown, the stop pin 32 is configured as a bull horn-shaped structure and is inserted into the socket 302 during installation.

[0051] During installation, such as Figure 5 As shown, firstly, the right end of the inner link 1 is inserted between the suspended top and bottom of the left side of the outer link 2, and the second mounting hole 201 on the left side of the outer link 2 and the first mounting hole 101 on the right side of the inner link 1 are coaxially aligned. Then, with the stop protrusion 31 facing downwards, the pin 3 is inserted from bottom to top through the second mounting hole 201 at the suspended bottom of the left side of the outer link 2, the first mounting hole 101 at the right side of the inner link 1, and the second mounting hole 201 at the suspended top of the left side of the outer link 2, so that the inner link 1 and the outer link 2 form a hinge. The four sets of elastic seals are then installed at both ends of the second mounting hole 201 of the outer link 2 to form three sealing cavities 301. At this time, the bottom right end of the inner link 1 and the top side of the left side of the suspended bottom of the outer link 2 are in contact. The top of the retaining ring 11 at the right end of the inner link 1 pushes against the bottom of the second set of elastic seals from top to bottom. Then, the retaining pin 32 is inserted into the insertion hole 302 so that the retaining pin 32 stops at the suspended top on the left side of the outer link 2. Then, liquid is filled into the three sealing cavities 301.

[0052] After filling, the multiple inner chain links 1 and multiple outer chain links 2 form a closed conveying loop by following the sequence of inner chain link 1, pin 3, outer chain link 2, pin 3 or outer chain link 2, pin 3, inner chain link 1, pin 3. By setting a flexible rotating connection between inner chain link 1, outer chain link 2, and pin 3, wear between them can be reduced, thus extending the service life of the traction forged chain used in the slag remover. Furthermore, the elastic seals reduce vibration intensity, improving the stability of slag transport.

[0053] Understandably, in order to facilitate the filling of liquid into the three sealed cavities 301, two first liquid injection holes are opened on the side wall of the inner link 1, and the first liquid injection holes are respectively connected to the two first mounting holes 101. Four second liquid injection holes are opened on the side wall of the outer link 2, and the second liquid injection holes are respectively connected to the four second mounting holes 201.

[0054] It is understandable that, in order to facilitate the control of the opening and closing of the first and second injection holes, plungers can be used to seal the inlets of the first and second injection holes.

[0055] In some embodiments, when the inner link 1 moves to the drive source that forms a closed loop with the traction forging chain of the slag remover, the tension on the inner link 1 will first increase and then decrease. This causes the traction forging chain of the slag remover on the side near the pulling end of the drive source to be in a taut state, while the traction forging chain of the slag remover on the side away from the pulling end of the drive source is in a relaxed state. This causes the traction forging chain of the slag remover to vibrate significantly, affecting the stability of the slag material. To solve this problem, the traction forging chain of the slag remover is further provided with an adjustment part 4. The adjustment part 4 is configured to adjust the volume of the sealing cavity 301 inversely proportional to the magnitude of the tension when the inner link 1 is under tension.

[0056] When the tension on the inner link 1 is large, the volume of the sealing cavity 301 is reduced and the liquid pressure is increased by adjusting the adjusting part 4, thereby increasing the connection strength between the inner link 1, the outer link 2 and the pin 3. This ensures the smooth operation of the chain and reduces chain vibration. When the tension on the inner link 1 is small, the volume of the sealing cavity 301 is increased and the liquid pressure is decreased by adjusting the adjusting part 4, thereby reducing the connection strength between the inner link 1, the outer link 2 and the pin 3, which helps to reduce wear.

[0057] In a further embodiment, the adjusting part 4 is configured as a frustum-shaped structure and is fixedly sleeved on the pin 3. The small end of the adjusting part 4 is positioned towards the stop protrusion 31, and the conical surface of the adjusting part 4 is guided and engaged with the inner peripheral wall of the first mounting hole 101.

[0058] Specifically, in this embodiment, such as Figure 10 As shown, the adjustment part 4 is positioned near the socket 302; as Figure 7 As shown, the adjusting part 4 is located in the sealing cavity 301 formed by the first mounting hole 101 and the pin 3. When the inner link 1 is subjected to tension, the inner link 1 will move towards the side closer to the force relative to the outer link 2. Under the guidance of the conical surface of the adjusting part 4, the pin 3 moves upward synchronously, so that the volume of all sealing cavities 301 is reduced and the liquid pressure is increased. Moreover, the greater the tension on the inner link 1, the greater the distance that the inner link 1 moves towards the side closer to the force relative to the outer link 2, so that the pin 3 moves upward a greater distance, thereby making the volume of all sealing cavities 301 smaller and the liquid pressure greater.

[0059] In other embodiments, the traction forging chain for the slag remover is configured to include three extrusion rings 5, which are sleeved on the pin 3 and can move synchronously with the pin 3 along the axial direction, and are respectively located in the sealing cavity 301.

[0060] Specifically, in this embodiment, in order to facilitate the installation of the compression ring 5 into the sealing cavity 301, the compression ring 5 is configured as a split structure, and during installation, the compression ring 5 is first disassembled and installed into the first mounting hole 101 or the second mounting hole 201.

[0061] To facilitate the synchronous movement of the extrusion ring 5 with the pin 3, such as Figure 7 and Figure 10 As shown, three insert rings 33 are fixedly sleeved on the pin 3. The three insert rings 33 are arranged axially at intervals. The uppermost insert ring 33 is located above the adjustment part 4 and close to the adjustment part 4. It is corresponding to the sealing cavity 301 formed between the second mounting hole 201 at the top of the outer link 2 and the pin 3. The other two insert rings 33 are located below the adjustment part 4. They are corresponding to the sealing cavities 301 formed between the first mounting hole 101 of the inner link 1 and the pin 3, and between the second mounting hole 201 at the bottom of the outer link 2 and the pin 3, respectively. An annular groove is coaxially formed on the bottom circumferential side wall of the compression ring 5. The insert rings 33 are inserted into the annular groove during installation.

[0062] When the pin 3 slides axially, the compression ring 5 can quickly change the volume of the sealing cavity 301, and thus quickly change the connection strength between the inner link 1, the outer link 2 and the pin 3 by rapidly changing the pressure of the liquid, thus ensuring timeliness.

[0063] In a further embodiment, the compression ring 5 is configured as a conical structure with its small end facing the stop pin 32.

[0064] In use, the conical structure can change the volume of the sealing cavity 301 more quickly than the ring structure, and thus can change the connection strength between the inner link 1, the outer link 2 and the pin 3 more quickly by changing the pressure of the liquid, thereby further ensuring timeliness.

[0065] In a further embodiment, both the first mounting hole 101 and the second mounting hole 201 are provided with a partially conical structure, with the smaller end facing the stop pin 32.

[0066] Specifically, in this embodiment, such as Figure 7 As shown, the bottom of both the first mounting hole 101 and the second mounting hole 201 is set as a conical structure, and the conical structure is set in correspondence with the conical structure of the extrusion ring 5.

[0067] In use, the conical structure can change the volume of the sealing cavity 301 more quickly than the ring structure, and thus can change the connection strength between the inner link 1, the outer link 2 and the pin 3 more quickly by changing the pressure of the liquid, thereby further ensuring timeliness.

[0068] In other embodiments, the liquid is configured to include lubricating hydraulic oil to both lubricate the inner link 1, outer link 2, and pin 3, and to ensure a flexible rotational connection between the inner link 1, outer link 2, and pin 3.

[0069] In other embodiments, to improve the connection strength between the inner link 1, the outer link 2 and the pin 3, each set of elastic seals is configured to include multiple elastic seals.

[0070] In other embodiments, the resilient seal is configured to include a disc spring 6.

[0071] Specifically, in this embodiment, the disc spring 6 is a special spring that is tapered in the axial direction and bears the load. After being deformed under the load, it stores a certain amount of potential energy. When relaxation occurs, the disc spring 6 releases part of the potential energy to maintain the pressure between the top side of the suspended top of the stop pin 32 and the outer link 2, the bottom side of the suspended top of the outer link 2 and the top of the stop ring 11, the bottom of the inner link 1 and the top side of the suspended bottom of the outer link 2, the bottom side of the suspended bottom of the outer link 2 and the stop protrusion 31 to meet the sealing requirements.

[0072] More specifically, to facilitate the installation of the disc spring 6 on the chain, the disc spring 6 can be configured as a split structure.

[0073] More specifically, the split-structure disc spring 6 can adopt the same structure as the quick-installation and replacement sealed disc spring 6 disclosed in patent number CN215334104U.

[0074] More specifically, in order to improve the sealing between the disc spring 6 and the liquid storage area, an annular groove can be coaxially provided at the bottom of both the first mounting hole 101 and the second mounting hole 201, and the disc spring 6 is partially inserted into the annular groove during installation.

[0075] In other embodiments, the traction forged chain for the slag remover is manufactured using a precision forging process.

[0076] Specifically, in this embodiment, the slag remover traction forging chain manufactured by precision forging process has uniform fiber density and optimized microstructure. The inherent defects in the material are fully improved and eliminated during forging, and the complete metal flow lines are preserved, resulting in excellent overall performance.

[0077] Based on the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows:

[0078] First, disassemble the three compression rings 5 ​​and insert them into the first mounting hole 101 and the second mounting hole 201 respectively.

[0079] like Figure 5As shown, the right end of the inner link 1 is then inserted between the suspended top and bottom of the left side of the outer link 2, and the second mounting hole 201 on the left side of the outer link 2 and the first mounting hole 101 on the right side of the inner link 1 are coaxially arranged. Then, with the stop protrusion 31 facing downward, the pin 3 is passed through the second mounting hole 201 on the left side of the outer link 2, the first mounting hole 101 on the right side of the inner link 1, and the second mounting hole 201 on the left side of the outer link 2 from bottom to top, so that the inner link 1 and the outer link 2 form a hinged engagement.

[0080] Then, a set of disc springs 6 are sleeved on the pin 3 and located between the insertion hole 302 and the top side of the suspended top of the outer link 2; then, the three sets of disc springs 6 are disassembled and inserted respectively between the bottom side of the suspended top of the outer link 2 and the top of the retaining ring 11, between the bottom of the first mounting hole 101 on the inner link 1 and the top side of the suspended bottom of the outer link 2, and between the bottom side of the suspended bottom of the outer link 2 and the retaining protrusion 31; then, the retaining pin 32 is inserted into the insertion hole 302 so that the retaining pin 32 stops at the suspended top on the left side of the outer link 2; after the retaining pin 32 is inserted into the insertion hole 302, all the disc springs 6 are in a compressed state.

[0081] Then the plunger is removed, and lubricating hydraulic oil is injected into the three sealing cavities 301 through the first injection hole and the second injection hole respectively. During the filling process, the split structure belonging to the same extrusion ring 5 gradually closes under the push of the lubricating hydraulic oil. After the filling is completed, the multiple inner chain links 1 and multiple outer chain links 2 form a closed conveying circuit in the order of inner chain link 1, pin 3, outer chain link 2, pin 3 or outer chain link 2, pin 3, inner chain link 1, pin 3.

[0082] Then, the slag remover is installed on the slag remover body 7 using a traction forged chain, and the next assembly work can be carried out.

[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A drag forge chain for a drag scraper, characterized by, The traction die forging chain of the slag conveyor forms a closed conveying loop on the slag conveyor body; the traction die forging chain of the slag conveyor comprises: a plurality of inner links, each of which is provided with a first mounting hole at both ends; a plurality of outer links, which are arranged alternately with the inner links along the conveying loop; each of the outer links is provided with a second mounting hole at both ends, the outer link is in an I-shaped structure, and the second mounting hole penetrates the suspended top and suspended bottom on the same side of the outer link; a plurality of pin shafts, which are arranged through the first mounting hole and the second mounting hole at the same time to form a hinged fit between adjacent outer links and inner links; the pin shaft, the second mounting hole on the suspended top of the outer link, the first mounting hole, and the second mounting hole on the suspended bottom of the outer link all form a liquid storage area; four sets of elastic sealing elements are sleeved on each pin shaft, which are arranged in the axial direction of the pin shaft and sealed at both ends of the liquid storage area to form three sealed cavities, each of which is filled with a liquid; a stop protrusion is fixedly arranged at the bottom end of each pin shaft, which stops at the suspended bottom of the outer link, and a stop pin is detachably arranged at the top end of each pin shaft, which stops at the suspended top of the outer link; The traction die forging chain of the slag conveyor further comprises an adjusting part, which is in a circular truncated cone structure and is fixedly sleeved on the pin shaft, the small end of the adjusting part is arranged towards the stop protrusion, and the tapered surface of the adjusting part is in guiding cooperation with the inner wall of the first mounting hole.

2. A drag forge chain for a slag conveyor according to claim 1, characterized in that The traction die forging chain of the slag conveyor further comprises three extrusion rings, which are sleeved on the pin shaft and can move synchronously along the axial direction of the pin shaft and are located in the sealed cavities respectively.

3. A drag forge chain for a slag conveyor according to claim 2, characterized in that The extrusion ring is in a conical structure with the small end towards the stop pin.

4. A drag forge chain for a drag-and-scrape machine according to claim 3, wherein The first mounting hole and the second mounting hole are both provided with a partial conical structure with the small end towards the stop pin.

5. The drag module forged chain for a slag conveyor according to claim 1, characterized in that, The liquid comprises lubricating hydraulic oil.

6. The drag module cast chain for a drag-and-scrape machine according to claim 1, characterized in that, Each set of elastic sealing elements comprises a plurality of elastic sealing elements.

7. The drag module cast chain for a drag-and-scrape machine according to claim 1, characterized in that, The elastic sealing element comprises a disc spring.

8. The drag module cast chain for a drag-and-scrape machine according to claim 1, characterized in that, The traction die forging chain of the slag conveyor adopts a precision die forging process.

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