A forged chain for a scraper conveyor by friction welding and its manufacturing process

Abstract

The embodiment of the present application provides a forged chain and a manufacturing process for a scraper conveyor by friction welding. The base material is heated and then forged to obtain a forged ring; a part of the forged ring is cut along the width direction to obtain half rings with twice the number of the part of the forged ring; a friction welding device is used to alternately distribute the forged rings and the half rings, and two half rings with opposite openings are friction welded into a welded ring, and the forged rings and the welded rings are alternately distributed to form a chain. Compared with the traditional direct bending and forming of bar materials, the forged ring has higher material strength and a denser internal tissue structure, thus improving the overall load-bearing capacity and service life of the chain; the welded ring formed by linear friction welding has no defects such as burns and cracks on the surface of the chain link compared with flash welding, and there will be no phenomenon of false welding; the alternate distribution of the forged rings and the welded rings is realized through the friction welding device, and this process greatly improves the production efficiency compared with the traditional manual chain making and welding.

Description

Technical Field

[0001] The present application relates to the field of mining chains, and particularly to a forged chain for a scraper conveyor by friction welding and a manufacturing process thereof. Background Art

[0002] In recent years, the demand for high-strength mining chains, a key component in the coal mining industry, has increased sharply, especially for large-size high-strength mining chains with a diameter ranging from φ34 to φ48.

[0003] Currently, the production processes of mining chains are mainly divided into three types, and all use flash welding as the welding method:

[0004] 1. Manual chain making and cold-state welding process: This process relies on punching equipment and special tooling for manual operation, and has high requirements for the cold bending performance of materials. However, during the cold bending process, the internal and external arcs at the bending part of the chain link are unevenly stressed, which easily leads to microcracks, wrinkles, and even brittle fractures. In addition, the skin effect of the current on the surface of the chain link during flash welding exacerbates the temperature difference, which may cause defects such as burns and cracks. Coupled with the limitations of equipment accuracy, fixture stiffness, and the problem of springback after welding, this process is limited in the production of mining round steel chains with a diameter of more than 26 mm.

[0005] 2. Automatic heating chain making and cold-state welding process: Compared with manual chain making, this process performs weaving and welding after the chain link is heated and cooled. Although it has made progress and is widely used, oxide skin is easily formed on the surface of the weld, affecting the welding quality, and additional surface treatment processes need to be added, thus increasing the cost. At the same time, cold-state welding has strict requirements for the holding time after welding, and the rapid opening of the fixture easily leads to loose weld joint structure and affects the quality.

[0006] 3. Automatic heating chain making and hot-state welding process: This process makes chains at a high temperature of 650°C to 750°C and requires the use of a manipulator for operation, which easily produces clamping indentations and affects the surface quality. During post-welding shaping, the inconsistent deformation caused by the temperature difference of each part of the chain link makes the ring irregular.

[0007] In addition, there are significant differences in the selection of process parameters between cold-state and hot-state welding, such as clamping length, preheating time, melting speed, etc., and the control difficulty is relatively large.

[0008] In summary, the existing chain link and chain production processes have significant drawbacks: First, the raw material rod is not forged, and compared with forged materials, its strength is low and the structure is loose; second, the inherent problems of the flash welding process, such as loose weld joint structure, surface burns, cracks, and false welding, are difficult to eliminate through heat treatment, further exacerbating the quality risks. Therefore, it is particularly important to develop a new mining chain production process that can overcome the above defects, improve the strength of the chain link, and improve the welding quality. Summary of the Invention

[0009] The embodiment of the present application provides a forged chain for a scraper conveyor by friction welding and a manufacturing process. After cutting the forged rings, they are re-welded into one body by friction welding and connected to two other forged rings to form a chain, solving the problems existing in the existing flash welding process and improving the strength of the chain links.

[0010] On the one hand, the embodiment of the present application provides a manufacturing process for a forged chain for a scraper conveyor by friction welding, including:

[0011] Heating the base material and then forging it to obtain forged rings;

[0012] Cutting some of the forged rings along the width direction to obtain twice the number of half-rings of the said part of the forged rings;

[0013] Using a knitting friction welding device to alternately distribute the forged rings and the half-rings, and friction welding two half-rings with opposite openings into a welded ring, and alternately distributing the forged rings and the welded rings to form a chain.

[0014] In a feasible implementation, the step of heating the base material and then forging it to obtain forged rings includes heating the base material to a preset temperature and then forging it through a mold to obtain an integrally structured forged ring.

[0015] In a feasible implementation, the step of cutting some of the forged rings along the width direction to obtain twice the number of half-rings of the said part of the forged rings includes cutting each of the forged rings of some of the forged rings along the width direction on the equal division line in the length direction to obtain two corresponding half-rings, where the lengths of the two half-rings are the same.

[0016] In a feasible implementation, the knitting friction welding device includes a first fixture and a second fixture, and a vibration device is connected to the first fixture and / or the second fixture;

[0017] A transmission chain is provided between the first fixture and the second fixture. The transmission chain is connected to a first sprocket and a second sprocket. The first sprocket is located inside the inner circle of the transmission chain, and the second sprocket is located outside the outer circle of the transmission chain. The transmission chain is in a U shape;

[0018] Two moving seats are fixedly installed on the transmission chain. A chute is opened on one side of the moving seat. Both ends of the chute are open. A conductive surface is laid on the inner wall of the chute. An electric telescopic rod perpendicular to it is fixedly installed on the moving seat. The electric telescopic rod is electrically connected to the corresponding conductive surface, and the movable end of the electric telescopic rod is fixedly connected to one end of a support rod;

[0019] There are two fixed seats between the first fixture and the second fixture. The fixed seat is fixedly connected to the first fixture or the second fixture. One side of the fixed seat is fixedly installed with a conductive block, and the conductive block is electrically connected to the electric control device. The conductive block can pass through the chute, and when the conductive block is located in the chute, the conductive block contacts the chute;

[0020] A support plate is provided between the first fixture and the second fixture. The support plate is fixedly connected to the first fixture or the second fixture, and the support plate is perpendicular to the first fixture or the second fixture. A conveying device is arranged on the support plate.

[0021] In a feasible implementation manner, the conveying device is a belt conveying device. The belt conveying device is connected with a power device, and a baffle is fixedly installed on the outer periphery of the conveyor belt of the belt conveying device;

[0022] A strip-shaped groove is opened at the bottom of the support plate. The strip-shaped groove communicates with the inside and outside of the support plate, and the baffle passes through the strip-shaped groove.

[0023] In a feasible implementation manner, the conveying device includes two belt conveying devices. The two belt conveying devices are connected by a universal coupling. One of the belt conveying devices is connected to the power device, and a baffle is fixedly installed on the outer periphery of the conveyor belt of each belt conveying device;

[0024] Two mutually parallel strip-shaped grooves are opened at the bottom of the support plate, and the baffle of each belt conveying device passes through the corresponding strip-shaped groove.

[0025] In a feasible implementation manner, the two ends of the chute and the two ends of the conductive block are chamfered.

[0026] In a feasible implementation manner, the support plate is of a U-shaped structure.

[0027] On the other hand, an embodiment of the present application provides a forged chain for a scraper conveyor by friction welding, including alternately distributed forged rings and welded rings. The chain is woven by the above-mentioned chain weaving process.

[0028] A friction-welded forged chain for scraper conveyors and its manufacturing process provided by an embodiment of the present application. The forged ring is integrally formed. Compared with the traditional method of directly bending a bar stock, the forged ring has higher material strength and a denser internal tissue structure, thus improving the overall load-bearing capacity and service life of the chain. The welded ring formed by linear friction welding uses the mutual friction between two half-rings to generate frictional heat. After reaching the preset temperature, the cutting surfaces of the two half-rings are aligned, and upsetting pressure perpendicular to the cutting surface direction is applied to the half-rings. The metal at the cutting surface diffuses and recrystallizes with each other and finally becomes an integral body. Compared with flash welding, it has higher strength, a compact structure, and there will be no defects such as burns and cracks on the surface of the chain link, nor will there be any phenomenon of false welding. After cutting a part of the forged ring into a half-ring, the alternating distribution of the forged ring and the welded ring is realized through a knitting friction welding device. This process greatly improves the production efficiency compared with the traditional manual chain knitting and welding. Description of the Drawings

[0029] Figure 1 It is a schematic flow chart of the manufacturing process of the friction-welded forged chain for scraper conveyors provided by an embodiment of the present application;

[0030] Figure 2 It is a schematic structural diagram of the knitting friction welding device provided by an embodiment of the present application;

[0031] Figure 3 It is a schematic diagram of the use state of the drive chain and the pallet provided by an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the use state of the drive chain provided by another embodiment of the present application;

[0033] Figure 5 It is Figure 3 a schematic diagram of the cooperation state of the conductive block and the sliding groove in

[0034] Figure 6 It is Figure 3 a schematic side structure diagram of the moving seat and the fixed seat in

[0035] Figure 7 It is a schematic diagram of the friction welding of the half-ring;

[0036] Figure 8 It is a schematic diagram of the cooperation state of the forged ring and the half-ring;

[0037] Figure 9 It is a schematic diagram of the structure of the chain.

[0038] Description of the Reference Numerals:

[0039] 100 - Base; 200 - Column; 300 - Upsetting Column; 400 - Vibration Slide; 500 - Vibration Fixture; 600 - Vibration Oil Cylinder; 700 - Upsetting Slide; 800 - Upsetting Fixture; 900 - Upsetting Oil Cylinder;

[0040] 110 - Vibration - damping Support; 111 - Vibration - damping Pad; 112 - Support;

[0041] 1 - Transmission Chain; 2 - First Sprocket; 3 - Second Sprocket; 4 - Moving Seat; 5 - Chute; 6 - Electric Telescopic Rod; 7 - Support Rod; 8 - Fixed Seat; 9 - Conductive Block; 10 - Support Plate; 11 - Belt Conveyor; 12 - Pusher Plate; 13 - Strip - shaped Groove; 14 - Universal Coupling;

[0042] 20 - Forged Ring; 30 - Welded Ring; 310 - Half Ring. Detailed Implementation Manner

[0043] In order to enable those skilled in the art of this technology to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0044] The following explains the proprietary terms involved in the embodiments of this application.

[0045] Linear friction welding: An advanced welding process. During the welding process, for two mutually - contacting workpieces, one workpiece reciprocates linearly relative to the other workpiece with a certain amplitude and frequency, generating frictional heat. When the temperature and deformation in the friction - welding zone reach a certain level, the workpieces are aligned and upsetting pressure is applied. The metal in the welding zone is welded into one body through mutual diffusion and recrystallization to complete the entire welding process.

[0046] Mine - used chain: A flexible structure formed by combining a "ring - shaped object" made of metal through a certain weaving process. It is usually applied to coal - mine scraper conveyors, plough shearers, drum shearers, and other mechanical traction chains, etc., and is abbreviated as mine chain.

[0047] Link: The basic unit that makes up the aforementioned "mine - used chain", usually in the shape of a "long ring". Multiple links can form a chain according to a certain processing method and placement rule.

[0048] Forged ring: A processing technology for links. It is to heat the metal and use a mold to forge links with external dimensions and properties meeting technical requirements, which has the advantage of high strength.

[0049] Welded ring: A processing technology for chain links, which welds an originally unclosed component into a closed ring-shaped structural component by welding. Its external dimensions and performance need to meet technical requirements.

[0050] Flash welding: A typical resistance welding method. When current passes through the contact surfaces of two butt-jointed workpieces, heat is generated on the contact surfaces, heating and melting the butt surfaces. After an appropriate time, pressure is applied to the joint to firmly bond the entire area of the two butt surfaces simultaneously, completing the entire welding process.

[0051] Figure 1 It is a schematic flow chart of the forging chain knitting process by friction welding for a scraper conveyor provided by an embodiment of the present application; Figure 2 It is a schematic structural diagram of the knitting friction welding equipment provided by an embodiment of the present application; Figure 3 It is a schematic diagram of the usage state of the drive chain and the pallet provided by an embodiment of the present application; Figure 4 It is a schematic diagram of the usage state of the drive chain provided by another embodiment of the present application; Figure 5 is Figure 3 a schematic diagram of the cooperation state of the conductive block and the chute in; Figure 6 is Figure 3 a schematic side structure diagram of the moving seat and the fixed seat in. Refer to Figures 1 to 6 As shown in, an embodiment of the present application provides a forging chain knitting process by friction welding for a scraper conveyor, including:

[0052] S100, heating the base material and then forging it to obtain a forged ring 20.

[0053] In some examples, the above step S100 further includes: heating the base material to a preset temperature and then forging it through a mold to obtain a forged ring 20 with an integral structure.

[0054] S200, cutting a part of the forged ring 20 along the width direction to obtain semi-rings 310 with twice the number of the part of the forged ring 20.

[0055] In some examples, the above step S200 further includes: cutting each forged ring 20 of a part of the forged ring 20 along the width direction on the equidistant line in the length direction to obtain two corresponding semi-rings 310, wherein the lengths of the two semi-rings 310 are the same.

[0056] It should be noted that cutting half of the number of forged rings 20 to obtain semi-rings 310 with the same number as the initial forged rings 20, and then welding the semi-rings 310 in pairs to obtain welded rings 30 with the same number as the remaining forged rings 20.

[0057] S300, by programming the friction welding equipment, the forging rings 20 and the half rings 310 are alternately distributed, and the two half rings 310 with opposite openings are friction welded into a welded ring 30. The forging rings 20 and the welded rings 30 are alternately distributed to form a chain.

[0058] In the above embodiment, the forging ring 20 is integrally formed. Compared with the traditional direct bending of bar stock, the forging ring 20 has higher material strength and a denser internal tissue structure, thus improving the overall load-bearing capacity and service life of the chain. The welded ring 30 formed by linear friction welding uses the mutual friction between the two half rings 310 to generate frictional heat. After reaching the preset temperature, the cutting surfaces of the two half rings 310 are aligned, and a upsetting pressure perpendicular to the cutting surface direction is applied to the half rings 310. The metal at the cutting surface diffuses and recrystallizes with each other and finally becomes an integral body. Compared with flash welding, it has higher strength, a compact structure, and there will be no defects such as burns and cracks on the surface of the chain link, nor will there be any phenomenon of false welding. After cutting a part of the forging ring 20 into half rings 310, the alternate distribution of the forging rings 20 and the welded rings 30 is realized through the programming friction welding equipment. This process greatly improves the production efficiency compared with the traditional manual chain making and welding.

[0059] In addition, the present application can flexibly adjust the number and distribution of the forging rings 20 and the welded rings 30 according to actual needs, so as to meet the requirements for the strength and flexibility of the chain under different application scenarios.

[0060] Figure 2 It is a schematic structural diagram of the programming friction welding equipment provided by an embodiment of the present application. Refer to Figure 2 As shown, in some examples, the programming friction welding equipment includes a base 100. One end of the top surface of the base 100 is fixedly installed with a column 200, and the other end of the top surface of the base 100 is fixedly installed with a upsetting column 300;

[0061] A vibration slide 400 is fixedly installed on the surface of the column 200 facing the upsetting column 300. A vibration fixture 500 is movably installed on the vibration slide 400. The vibration fixture 500 is connected to the base 100 through a vibration oil cylinder 600. The vibration oil cylinder 600 is used to make the vibration fixture 500 move along the vibration slide 400 perpendicular to the top surface of the base 100;

[0062] A upsetting slide 700 is fixedly installed on the top surface of the base 100. The upsetting slide 700 is located between the column 200 and the upsetting column 300. A upsetting fixture 800 is movably installed on the upsetting slide 700. The upsetting fixture 800 is connected to the upsetting column 300 through a upsetting oil cylinder 900. The upsetting oil cylinder 900 is used to make the upsetting fixture 800 move along the upsetting slide 700 perpendicular to the vibration fixture 500.

[0063] Vibration damping support members 110 are fixedly installed on the front and rear sides of the base 100 respectively.

[0064] The vibration damping support member 110 includes a damping pad 111 and a support member 112. The damping pad 111 is located at the top of the support member 112, and the support member 112 is perpendicular to the extension direction of the bottom surface of the base 100.

[0065] Figure 7 is a schematic diagram of friction welding of a semi-ring. Refer to Figure 7 As shown, in the above embodiment, the user respectively places two semi-rings 310 to be welded into the vibration fixture 500 and the upsetting fixture 800, makes the welding surfaces of the two semi-rings 310 to be welded face each other and clamped, then sends the upsetting fixture 800 to the vibration fixture 500 through the upsetting oil cylinder 900 so that the welding surfaces of the two semi-rings 310 to be welded come into contact, then makes the vibration fixture 500 vibrate up and down at a high frequency through the vibration oil cylinder 600, so that the welding surfaces of the two semi-rings 310 to be welded generate plastic flow, then makes the welding surfaces of the two semi-rings 310 to be welded aligned through the vibration oil cylinder 600, and finally applies pressure through the upsetting oil cylinder 900, so that the two semi-rings 310 to be welded are welded together, and a high-performance high-quality weld comparable to the forged structure can be obtained, thereby obtaining a chain link with a higher international quality standard, and there is no smoke and flash during the welding process, which is more environmentally friendly and also helps to improve the working environment quality.

[0066] It should be noted that a row of vibration damping support members 110 is arranged on each of the front and rear sides of the base 100, and the vibration damping support members 110 located below the column 200 and the upsetting column 300 are of a triple structure, that is, one vibration damping support member 110 is composed of three support members 112 and three damping pads 111. In some examples, the three support members 112 are distributed in an equilateral triangle. The vibration damping support member 110 located in the middle can adopt a single structure, that is, it is composed of one support member 112 and one damping pad 111.

[0067] It is easy to understand that the vibration at the column 200 and the upsetting column 300 is relatively large, and the probability of deformation at the corresponding position of the base 100 is also relatively large. By using the vibration damping support member 110 of the triple structure to carry out vibration damping support, the maximum load of the vibration damping support member 110 at this place can be improved, and the load borne is evenly distributed to each damping pad 111, and the support stability is higher. And the triple structure and the single structure are used in combination, which not only increases the number of support points to meet the requirements of vibration damping support, but also does not increase the support length, and is more economical and applicable.

[0068] Figure 3 is a schematic diagram of the use state of the transmission chain and the pallet provided by an embodiment of the present application. Refer to Figure 3As shown, in some examples, the friction stir welding equipment includes a first fixture and a second fixture, and a vibration device is connected to the first fixture and / or the second fixture;

[0069] It should be noted that the first fixture and the second fixture are the vibration fixtures 500 and the upsetting fixtures 800 in the foregoing embodiments, and the vibration device is the vibration oil cylinder 600 in the foregoing embodiments.

[0070] For the convenience of the later detachment of the half rings 310 clamped by the first fixture and the second fixture, the tops of the first fixture and the second fixture are open, or the first fixture and the second fixture respectively include two separable upper and lower parts.

[0071] A transmission chain 1 is provided between the first fixture and the second fixture. The transmission chain 1 is connected to a first sprocket 2 and a second sprocket 3. The first sprocket 2 is located inside the transmission chain, and the second sprocket 3 is located outside the transmission chain. The transmission chain 1 is in a U shape;

[0072] It should be noted that both the first sprocket 2 and the second sprocket 3 are fixedly connected to the first fixture or the second fixture, and the first sprocket 2 and / or the second sprocket 3 are connected to a power device, and the power device is fixedly installed on the first fixture or the second fixture.

[0073] It is easy to understand that when one of the first fixture and the second fixture is connected to the vibration device, the first sprocket 2, the second sprocket 3 and the power device are arranged on the fixture that is not connected to the vibration device.

[0074] Two moving seats 4 are fixedly installed on the transmission chain 1. A chute 5 is opened on one side of the moving seat 4. Both ends of the chute 5 are open. A conductive surface is laid on the inner wall of the chute 5. An electric telescopic rod 6 perpendicular to it is fixedly installed on the moving seat 4. The electric telescopic rod 6 is electrically connected to the corresponding conductive surface, and the movable end of the electric telescopic rod 6 is fixedly connected to one end of a support rod 7;

[0075] It is easy to understand that the electric telescopic rod 6 and the support rod 7 are coaxially arranged and both face the linear friction welding area. For the convenience of distinction, the moving seat 4 is divided into a first moving seat and a second moving seat, and the two move synchronously. When the first moving seat moves to the previous stopping position of the second moving seat, the second moving seat moves to the previous stopping position of the first moving seat.

[0076] In other examples, referring to Figure 4 As shown, the two moving seats 4 bisect the transmission chain 1, that is, the effective length of the first moving seat along the transmission chain 1 to the second moving seat is equal to the effective length of the second moving seat along the transmission chain 1 to the first moving seat.

[0077] In other examples, the supporting rod 7 may not be coaxially arranged with the electric telescopic rod 6. Instead, the other end of the supporting rod 7 is slightly inclined upward, which can prevent the forging ring 20 from detaching from the supporting rod 7 during the process of driving the forging ring 20 to move.

[0078] Two fixed seats 8 are arranged between the first clamp and the second clamp. The fixed seat 8 is fixedly connected to the first clamp or the second clamp. A conductive block 9 is fixedly installed on one side of the fixed seat 8. The conductive block 9 is electrically connected to the electric control device. The conductive block 9 can pass through the chute 5, and when the conductive block 9 is located in the chute 5, the conductive block 9 contacts the chute 5.

[0079] It should be noted that the fixed seat 8 is also arranged on the clamp that is not connected to the vibration device, and the fixed seat 8 is arranged at the U-shaped opening of the transmission chain 1. The electric control device is used to provide electrical energy for the electric telescopic rod 6 and control the telescopic movement of the electric telescopic rod 6.

[0080] A support plate 10 is arranged between the first clamp and the second clamp. The support plate 10 is fixedly connected to the first clamp or the second clamp, and the support plate 10 is perpendicular to the first clamp or the second clamp. A conveying device is arranged on the support plate 10.

[0081] It should be noted that the support plate 10 is arranged on the clamp connected to the vibration device, and the depth of the support plate 10 is about 1 / 3 of the length of the forging ring 20.

[0082] Figure 8 It is a schematic diagram of the mating state of the forging ring and the half ring; Figure 9 It is a schematic diagram of the structure of the chain. Refer to Figure 7 and Figure 8As shown, in the above embodiment, the two semi-rings 310 are respectively placed in the first fixture and the second fixture, and the forging ring 20 is placed in the pallet 10. The forging ring 20 is moved towards the opposite fixture by the conveying device. The setting position of the pallet 10 is staggered with the setting position of the semi-rings 310. With the approach of the first fixture and the second fixture, the forging ring 20 can be positioned between the two semi-rings 310. At this time, the conductive block 9 on the right is located in the chute 5 and contacts the conductive surface laid in the chute 5. The electric control device supplies power to the electric telescopic rod 6 through the conductive block 9 and the conductive surface and controls its extension, so that the support rod 7 extends into the forging ring 20. Then the vibration device works to perform linear friction welding on the cutting surfaces of the two semi-rings 310 to form the welded ring 30. After the welding is completed, the power device works to drive the transmission chain 1 to move, and the moving seat 4 thereon moves accordingly. The first moving seat drives the forging ring 20 to move. When the bottom of the inner ring of the forging ring 20 contacts the welded ring 30, the welded ring 30 is driven to move. According to the movement trajectory of the transmission chain 1, the forging ring 20 first moves upward, and the welded ring 30 sleeved thereon droops downward after disengaging from the first fixture and the second fixture. Subsequently, the forging ring 20 and the welded ring 30 move downward until the first moving seat moves to the fixed seat 8 on the left. At this time, the second moving seat moves to the fixed seat 8 on the right, and the above process is repeated. At this time, the electric telescopic rod 6 on the first moving seat contracts, and the forging ring 20 and the welded ring 30 are driven to move by the second moving seat, and this alternates in a cycle. The knitting friction welding equipment provided in the above embodiment can automatically complete the knitting and welding of the chain, enable the welded ring 30 to obtain a high-performance and high-quality weld comparable to the forging structure, improve the strength and service life of the entire chain, and fill the gap in chain knitting in the field of linear friction welding, which is beneficial to improving the production efficiency of friction-welded forging chains, reducing manual intervention, and reducing the probability of production safety accidents.

[0083] In some examples, the conveying device is a belt conveying device 11. The belt conveying device 11 is connected to a power device, and a baffle 12 is fixedly installed on the outer periphery of the conveyor belt of the belt conveying device 11.

[0084] A strip-shaped groove 13 is opened at the bottom of the pallet 10. The strip-shaped groove 13 communicates with the inside and outside of the pallet, and the baffle 12 passes through the strip-shaped groove 13.

[0085] It should be noted that the belt conveying device 11 selects V-shaped pulleys and V-shaped belts. Compared with ordinary conveyor belts, the V-shaped belts have higher stability. The power device selects a motor, and specific models can be selected according to actual situations, such as stepping motors, etc. This application does not make any limitations in this regard, and it can also be used in cooperation with a speed reducer, etc.

[0086] In the above embodiment, the dial plate 12 passes through the strip-shaped groove 13 and contacts the forging ring 20 in the support plate 10. When the conveyor belt of the belt conveyor device 11 works, the forging ring 20 is driven to move by the dial plate 12 thereon. Through the cooperation of the belt conveyor device 11 and the dial plate 12, the effective movement of the forging ring 20 is realized. The mechanized conveying process reduces manual intervention, improves production efficiency, reduces the need for manual handling and operation, and reduces the risk of work-related injuries.

[0087] To ensure the stability of the movement of the forging ring 20, specifically, two mutually parallel dial plates 12 can also be fixedly installed on the outer periphery of the conveyor belt of the belt conveyor device 11. The distance between the two dial plates 12 is slightly larger than the thickness of the forging ring 20, so as to form an effect of moving and clamping. Or, the dial plate 12 can be designed in a U shape, and other methods can also be adopted. The present application does not make any limitations in this regard.

[0088] In some examples, the conveying device includes two of the belt conveyor devices 11. The two belt conveyor devices 11 are connected by a universal coupling 14. One of the belt conveyor devices 11 is connected to the power device. Dial plates 12 are fixedly installed on the outer periphery of the conveyor belt of each belt conveyor device 11;

[0089] Two mutually parallel strip-shaped grooves 13 are opened at the bottom of the support plate 10. The dial plate 12 of each belt conveyor device 11 passes through the corresponding strip-shaped groove 13.

[0090] It is easy to understand that the two belt conveyor devices 11 are evenly distributed at the bottom of the support plate 10. For example, they are symmetrically distributed with respect to the center line in the extending direction of the support plate 10. The two belt conveyor devices 11 and the motor are both fixedly connected to the support plate 10 or the corresponding fixture.

[0091] In the above embodiment, the two belt conveyor devices 11 drive the forging ring 20 to move simultaneously. The application points of force increase and are evenly distributed on both sides of the forging ring 20. The movement of the forging ring 20 is more stable. And by linking the two belt conveyor devices 11 through the universal coupling 14, the setting of the power device can be reduced, which is beneficial to cost control.

[0092] In some examples, both ends of the sliding groove 5 and both ends of the conductive block 9 are chamfered.

[0093] In the above embodiment, the chamfer design can make it more convenient for the conductive block 9 to be inserted into and detached from the sliding groove 5.

[0094] In some examples, the support plate 10 is of a U-shaped structure.

[0095] In the above embodiment, the U-shaped support plate 10 can fit the outer shape of the forging ring 20, and can better limit the linear movement of the forging ring 20 along the extending direction of the support plate 10, improving the movement stability of the forging ring 20.

[0096] On the other hand, referring to Figure 9 As shown, an embodiment of the present application provides a forged chain for a scraper conveyor by friction welding, which includes alternately distributed forged rings 20 and welded rings 30, and the chain is woven by the above-mentioned chain weaving process.

[0097] In the above embodiment, the chain is composed of alternately distributed forged rings 20 and welded rings 30. The forged rings 20 are integrally formed by forging, and the welded rings 30 are formed by linear friction welding after the forged rings 20 are split in half. The strength of the weld seam is comparable to that of the forged structure. Compared with the traditional direct bending of bar stock, it has higher material strength and a denser internal tissue structure, thereby improving the overall load-bearing capacity and service life of the chain.

[0098] It is easy to understand that those skilled in the art can combine, split, and reorganize the embodiments of the present application based on several embodiments provided by the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0099] The above specific implementation manners further elaborate on the purpose, technical solutions, and beneficial effects of the embodiments of the present application. It should be understood that the above is only the specific implementation manners of the embodiments of the present application and is not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A forging chain knitting process by friction welding for scraper conveyors, characterized in that, Including: Heating a base material and then forging it to obtain a forged ring; Cutting a part of the forged ring in the width direction to obtain half rings with twice the number of the part of the forged ring; By using a knitting friction welding device to alternately distribute the forged ring and the half rings, and friction welding two half rings with opposite openings into a welded ring, and alternately distributing the forged ring and the welded ring to form a chain; The knitting friction welding device includes a first fixture and a second fixture, and a vibration device is connected to the first fixture and / or the second fixture; A transmission chain (1) is arranged between the first fixture and the second fixture. The transmission chain (1) is connected to a first sprocket (2) and a second sprocket (3). The first sprocket (2) is located inside the inner circle of the transmission chain (1), and the second sprocket (3) is located outside the outer circle of the transmission chain (1). The transmission chain (1) is in a U shape; Two moving seats (4) are fixedly installed on the transmission chain (1). A chute (5) is opened on one side of the moving seat (4). Both ends of the chute (5) are open. A conductive surface is laid on the inner wall of the chute (5). An electric telescopic rod (6) perpendicular to it is fixedly installed on the moving seat (4). The electric telescopic rod (6) is electrically connected to the corresponding conductive surface. The moving end of the electric telescopic rod (6) is fixedly connected to one end of a support rod (7); Two fixed seats (8) are arranged between the first fixture and the second fixture. The fixed seat (8) is fixedly connected to the first fixture or the second fixture. A conductive block (9) is fixedly installed on one side of the fixed seat (8). The conductive block (9) is electrically connected to an electric control device. The conductive block (9) can pass through the chute (5), and when the conductive block (9) is located in the chute (5), the conductive block (9) contacts the chute (5); A support plate (10) is arranged between the first fixture and the second fixture. The support plate (10) is fixedly connected to the first fixture or the second fixture, and the support plate (10) is perpendicular to the first fixture or the second fixture. A conveying device is arranged on the support plate (10).

2. The forging chain knitting process by friction welding for scraper conveyors according to claim 1, characterized in that, The step of heating a base material and then forging it to obtain a forged ring includes heating the base material to a preset temperature and then forging it through a mold to obtain a forged ring with an integral structure.

3. The forging chain knitting process by friction welding for scraper conveyors according to claim 1, characterized in that, The step of cutting a part of the forged ring in the width direction to obtain half rings with twice the number of the part of the forged ring includes cutting each forged ring of the part of the forged ring in the width direction along the equal division line in the length direction to obtain two corresponding half rings, wherein the lengths of the two half rings are the same.

4. The forging chain knitting process by friction welding for scraper conveyors according to claim 1, characterized in that, The conveying device is a belt conveying device (11). The belt conveying device (11) is connected to a power device. A baffle (12) is fixedly installed on the outer circumference of the conveyor belt of the belt conveying device (11); A strip-shaped groove (13) is opened at the bottom of the support plate (10). The strip-shaped groove (13) communicates with the inside and outside of the support plate (10). The baffle (12) passes through the strip-shaped groove (13).

5. The forging chain knitting process by friction welding for scraper conveyors according to claim 1, characterized in that, The conveying device includes two belt conveying devices (11), the two belt conveying devices (11) are connected by a universal coupling (14), one of the belt conveying devices (11) is connected to a power device, and a baffle (12) is fixedly installed on the outer periphery of the conveyor belt of each belt conveying device (11); Two parallel strip-shaped grooves (13) are formed at the bottom of the pallet (10), and the baffle (12) of each belt conveying device (11) passes through the corresponding strip-shaped groove (13).

6. The forging chain knitting process by friction welding for a scraper conveyor according to claim 1, characterized in that, Both ends of the sliding groove (5) and both ends of the conductive block (9) are chamfered.

7. The forging chain knitting process by friction welding for scraper conveyors according to claim 1, characterized in that, The pallet (10) has a U-shaped structure.

Images