Heat treatment tooling and method for converting rail steel into forged bucket teeth

Abstract

The application discloses a kind of heat treatment frock and method of track steel conversion forging bucket tooth, belong to engineering machinery bucket tooth processing technical field, for improving the heat treatment efficiency of bucket tooth, energy saving, including hoist main body, the bottom of suspension main body is fixedly connected with the corresponding profiling foot of bucket tooth seat top mouth cavity, slidingly connected with pin board, and is provided with with operating structure to operate itself operating part rotation realizes pin board close to or away from profiling foot.The application, by setting material table structure, it can be well matched with suspension main body, realize automatic, efficient loading bucket tooth, especially without personnel close, second loading can be carried out when suspension main body is not cooled, energy can be well saved, and using driving rod, operating structure and sliding boom, the position of pin board can be pushed close to profiling foot when suspension main body is lifted, and bucket tooth can be locked, guarantee the safety in hoisting process.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery bucket tooth processing technology, and in particular to a heat treatment tooling and method for converting rail steel into forged bucket teeth. Background Technology

[0002] Rail steel is an alloy steel used in railway tracks. Its production requires high technological standards to meet the requirements of trains. To ensure the safety of train operation, new tracks need to be replaced regularly. The rail steel that is regularly replaced still retains good material properties and is suitable for use in engineering machinery, especially in the machining of bucket teeth.

[0003] The rail steel can be cut into a large rough shape first, then forged into bucket teeth, and then locally quenched. Compared with direct forging or forming of cast steel, the production cost can be significantly reduced. In my country, the production technology of converting rail steel into forged bucket teeth has a relatively short development time. At present, the heat treatment of rail steel converted into forged bucket teeth is basically still done by heat treatment of individual bucket teeth. The treatment method is outdated and has low production efficiency. Therefore, this invention provides a heat treatment tooling and method for converting rail steel into forged bucket teeth. Summary of the Invention

[0004] The purpose of this invention is to provide a heat treatment tooling and method for converting rail steel to forged bucket teeth that is highly efficient, energy-saving, and capable of continuous heat treatment.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A heat treatment fixture for converting rail steel forged bucket teeth, comprising:

[0007] The suspension body has a bottom fixedly connected contoured foot corresponding to the top chamber of the bucket tooth seat, a slidably connected pin plate, and an operating structure that rotates its own operating component to move the pin plate closer to or away from the contoured foot. A pin assembly is fixedly installed on the side of the pin plate near the contoured foot, and the pin assembly corresponds to the mounting pin hole on the bucket tooth. Cylindrical support feet are fixedly connected to the four corners of the suspension body. A sliding rod is slidably connected to the inner side of each cylindrical support foot. A lifting lug is provided at the top of the sliding rod. A sliding hole is opened on the side of the cylindrical support foot. A drive rod is fixedly connected between the two sliding rods corresponding to the two cylindrical support feet in the same row. The drive rod is slidably connected to the sliding hole. When the drive rod slides upward relative to the cylindrical support foot with the sliding rod, it can push the operating component of the operating structure to rotate.

[0008] The material platform has a liftable carrier plate with placement holes. The outer side of the carrier plate is provided with a first support member corresponding to the cylindrical support leg. The first support member includes a first cylindrical support leg fixedly connected to the ground and a first conical head fixedly connected to the top of the first cylindrical support leg.

[0009] The water-cooled pool has a second support member inside that corresponds to the cylindrical support leg. The second support member includes a second cylindrical support leg that is fixedly connected to the ground and a second conical head that is fixedly connected to the top of the second cylindrical support leg.

[0010] As a preferred embodiment, the suspension body includes a rectangular frame, the top end of the cylindrical support leg is fixedly connected to the corner of the rectangular frame, and the top opening of the cylindrical support leg is exposed. The top of the sliding rod extends out from the top opening of the cylindrical support leg, and a limiting part is fixedly provided at the bottom end of the sliding rod.

[0011] As a preferred embodiment, the rectangular frame includes a frame, with crossbeams fixedly connected to the inner side of the frame, and hollow columns fixedly connected between the crossbeams.

[0012] As a preferred embodiment, the top of the contoured foot is fixedly connected to the crossbeam via a cross-shaped hanger.

[0013] The operating structure includes a first slide rod and a second slide rod. Both the first slide rod and the second slide rod are slidably connected to the cross-shaped lifting rod, and the first slide rod and the second slide rod are located on both sides of the cross-shaped lifting rod. The pin plate is fixedly connected to the second slide rod, and the first slide rod and the second slide rod are fixedly connected by a connecting rod.

[0014] At the bottom of the frame and at both ends of the first slide rod, a first threaded cylinder and a second threaded cylinder are fixedly connected, respectively. The end of the first slide rod extends into the inner side of the first threaded cylinder and the second threaded cylinder. The end of the first threaded cylinder away from the first slide rod is threadedly connected to a first screw, and a first adjusting ring is fixedly installed on the first screw. The end of the second threaded cylinder away from the first slide rod is threadedly connected to a second screw, and a second adjusting ring is fixedly installed on the second screw. The operating component is a locking rod, and the two ends of the locking rod are fixedly connected to the first adjusting ring and the second adjusting ring, respectively.

[0015] As a preferred embodiment, a first adjusting block is provided inside the first threaded cylinder and between the end of the first slide rod and the end of the first screw, and a second adjusting block is provided inside the second threaded cylinder and between the end of the first slide rod and the end of the second screw.

[0016] As a preferred embodiment, the second slide bar has a notch on its side, a middle plate is fixedly connected to the inner side of the notch, and a locking plate is fixedly connected to the top of the pin plate. The locking plate is locked onto the middle plate and the locking plate is fixed to the middle plate by rivets.

[0017] As a preferred embodiment, the pin plate has a Y-shaped sliding hole on its side, and one end of the pin assembly has a threaded thin shaft, which passes through the Y-shaped sliding hole and is threadedly connected to a fastening nut.

[0018] As a preferred option, a lifting platform is installed at the bottom of the carrier plate, and the lifting platform is fixedly connected to the ground. The lifting platform has a scissor-type structure.

[0019] The water-cooled pool includes a pool body, on the side of which a cold water inlet and a hot water outlet are fixedly installed. Inside the pool body, there is a mesh plate, which includes a horizontal plate and a vertical plate arranged in a cross shape. The horizontal plate is fixedly connected to the top of the vertical plate, and both ends of the vertical plate are provided with lifting parts.

[0020] As a preferred embodiment, it further includes: an auxiliary control component, which is disposed on one side of the pool body and is fixedly connected to the ground;

[0021] The auxiliary control component includes a main rod, the bottom end of which is fixedly connected to the ground. A circular opening is provided at the top of the main rod, and a side opening is provided on the side of the main rod near the top. A rubber column is provided inside the circular opening, and the top of the rubber column extends to the side opening. A control plate is slidably provided inside the side opening, and a control handle is fixedly connected to the end of the control plate away from the pool body.

[0022] The method of using the heat treatment fixture for converting rail steel to forged bucket teeth involves using any of the above-mentioned heat treatment fixtures for converting rail steel to forged bucket teeth to perform quenching treatment on the forged bucket teeth, specifically including the following steps:

[0023] S1. Insert the bucket teeth with the tip facing down into the placement hole opened on the carrier plate. Then, use a crane to lift the suspension body. The crane's lifting rope is connected to the lifting lug at the top of the sliding rod. Support the cylindrical support foot on the suspension body on the first support member. The worker uses a rod-shaped tool to drive the operating component to rotate, so that the pin plate moves away from the contour foot. The contour foot is inserted into the installation cavity of the bucket teeth. Then, use a crane to lift the suspension body. During the process, the sliding rod is first subjected to upward force. The drive rod slides upward with the sliding rod relative to the cylindrical support foot, pushing the operating component of the operating structure to rotate, so that the pin plate moves closer to the contour foot. Insert the pin assembly into the installation pin hole of the bucket teeth, thereby using a crane to stably lift the suspension body loaded with bucket teeth into the heating furnace.

[0024] S2. When the bucket teeth are heated to 800℃-1400℃, the suspension body carrying the bucket teeth will be steadily lifted into the water cooling pool by a crane, so that the tips of the bucket teeth are quenched for 6S-8S. Then, the workers use rod-shaped tools to drive the operating parts to rotate, so that the pin plate moves away from the guide foot, and the bucket teeth fall completely into the water cooling pool under the action of gravity.

[0025] S3. Repeat step S1 using the uncooled suspension body, and then repeat S2 to achieve heat treatment of the second batch of bucket teeth, thus achieving continuous heat treatment.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] (1) By setting up the material platform structure, it can cooperate well with the suspension body to achieve automatic and efficient loading of bucket teeth. In particular, it does not require personnel to approach and can be loaded a second time before the suspension body cools down, which can save energy. Moreover, by using the drive rod, operating structure and sliding rod, the pin plate can be pushed close to the contour foot when the suspension body is lifted, and the bucket teeth can be locked to ensure safety during the lifting process.

[0028] (2) By improving the use of heat treatment fixtures for forged bucket teeth made from rail steel, the bucket teeth are repeatedly loaded using an uncooled suspension body to reduce the energy consumed by the fixtures during the heating process. In this method, the tips of the bucket teeth are quenched for 6-8 seconds. Then, the worker uses a rod-shaped tool to drive the operating parts to rotate, so that the pin plate moves away from the contour foot. The bucket teeth fall completely into the water cooling pool under gravity, thus achieving the purpose of quenching the tips of the bucket teeth first and achieving rapid quenching (only the heads of multiple bucket teeth are quenched in the water cooling pool, and the cold water can fully and quickly cool the tips of the bucket teeth), ensuring the quenching effect. Then, all the bucket teeth are lowered into the water cooling pool together for secondary quenching, and all surfaces of the bucket teeth are quenched, so as to ensure the material transition between the tips of the bucket teeth and the rest of the parts, giving the bucket teeth better mechanical properties. Attached Figure Description

[0029] Figure 1 A three-dimensional view of the loading state of the heat treatment tooling for converting rail steel into forged bucket teeth;

[0030] Figure 2 A three-dimensional view of the suspension main body of the heat treatment fixture for converting the forged bucket teeth of the rail steel;

[0031] Figure 3 A perspective view of one row of clamping devices in the heat treatment fixture for the conversion of rail steel to forged bucket teeth;

[0032] Figure 4 A perspective view of one row of clamping devices in the heat treatment fixture for the conversion of rail steel to forged bucket teeth;

[0033] Figure 5 A perspective view of one row of clamping devices in the heat treatment fixture for the conversion of rail steel to forged bucket teeth;

[0034] Figure 6A three-dimensional schematic diagram of the water cooling tank for the heat treatment tooling used in the conversion of track steel to forged bucket teeth;

[0035] Figure 7 A three-dimensional schematic diagram of the auxiliary control components of the heat treatment tooling for converting the track steel into forged bucket teeth.

[0036] In the diagram: 1. Suspension body; 11. Rectangular frame; 11a. Crossbeam; 11b. Frame; 11c. Hollow column; 12. Cylindrical support foot; 13. Sliding hole; 14. Sliding rod; 15. Limiting part; 16. Lifting lug; 17. Drive rod; 18. Cross-shaped rod; 19. Contouring foot; 110. First sliding rod; 111. Second sliding rod; 112. First threaded cylinder; 113. First screw; 114. First adjusting ring; 115. Second threaded cylinder; 116. Second screw; 117. Second adjusting ring; 118. Locking rod; 119. First adjusting block; 120. Second adjusting block; 121. Notch; 122. Middle plate 1. Pin plate; 123. Clamping plate; 124. Y-shaped sliding hole; 126. Pin assembly; 127. Fastening nut; 2. Material platform; 21. Carrier plate; 22. First cylindrical support; 23. First cone head; 24. Placement hole; 25. Lifting platform; 3. Water cooling pool; 31. Pool body; 32. Mesh plate; 321. Horizontal plate; 322. Vertical plate; 323. Lifting part; 33. Cold water inlet; 34. Hot water outlet; 35. Second cylindrical support; 36. Second cone head; 37. Auxiliary control assembly; 371. Main rod; 372. Round opening; 373. Side opening; 374. Rubber column; 375. Control panel; 376. Control handle. Detailed Implementation

[0037] The present invention will now be further described in conjunction with specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0038] In the description of this invention, it should be noted that directional terms such as "center," "lateral," "longitudinal," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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. They should not be construed as limiting the specific protection scope of this invention.

[0039] It should be noted that the terms "first," "second," etc., in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0040] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this invention are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device.

[0041] Traditional casting or forging of bucket teeth results in relatively low production efficiency, with simple heat treatment methods sufficient to meet factory needs. However, using rail steel to forge bucket teeth requires only laser cutting, outer contour forging, and heat treatment to obtain the finished bucket teeth. This significantly improves the upstream processes, thus necessitating a highly efficient heat treatment process to enhance the overall processing efficiency of bucket teeth. Therefore, this invention provides the following technical solution:

[0042] like Figures 1-7 The heat treatment fixture for converting rail steel into forged bucket teeth includes: a suspension body 1, a material platform 2, and a water cooling tank 3.

[0043] The suspension body 1 has a fixed bottom connection to a contour foot 19 corresponding to the top chamber of the bucket tooth seat, a sliding connection to a pin plate 123, and an operating structure that allows the pin plate 123 to move closer to or away from the contour foot 19 by rotating its own operating component. When the operating component is rotated, the pin plate 123 moves closer to or away from the contour foot 19. After the contour foot 19 is inserted into the mounting chamber of the bucket tooth, the bucket tooth can be clamped and fixed by the pin plate 123 approaching the contour foot 19. Of course, the operating component can also be rotated in the opposite direction to move the pin plate 123 away from the contour foot 19, thereby releasing the fixed bucket tooth, which then falls under the action of gravity.

[0044] A pin assembly 126 is fixedly installed on the side of the pin plate 123 near the contour foot 19. The pin assembly 126 corresponds to the mounting pin hole on the bucket tooth. When the pin plate 123 moves towards the contour foot 19, the pin assembly 126 can be inserted into the mounting pin hole on the bucket tooth, thereby stably fixing the bucket tooth.

[0045] Cylindrical support legs 12 are fixedly connected to the four corners of the suspension body 1. The cylindrical support legs 12 are relatively long, one of their functions being to support the ground, allowing the pin plate 123 and the contoured foot 19 to suspend in the air, thus protecting the pin plate 123 and the contoured foot 19. A sliding rod 14 is slidably connected to the inner side of each cylindrical support leg 12. The top of the sliding rod 14 is provided with a lifting lug 16, which corresponds to the hook of the crane's wire rope. The sliding rod 14 serves as the direct force application point for the crane. A sliding hole 13 is opened on the side of the cylindrical support leg 12. A drive rod 17 is fixedly connected between the two sliding rods 14 corresponding to two cylindrical support legs 12 in the same row. The drive rod 17 is slidably connected to the sliding hole 13. When the crane applies force, the wire rope acts directly on the sliding boom 14. The sliding boom 14 first slides upward, and then drives the drive rod 17 to move upward in sync. When the drive rod 17 slides to the top of the sliding hole 13, it will drive the cylindrical support foot 12 to move upward, thereby lifting the suspended body 1 upward.

[0046] When the drive rod 17 slides upward relative to the cylindrical support foot 12 along with the sliding rod 14, it can push the operating component of the operating structure to rotate, so that the pin plate 123 approaches the contour foot 19 and fixes the bucket teeth.

[0047] The material platform 2 has a liftable carrier plate 21, that is, a lifting platform 25 is installed at the bottom of the carrier plate 21. The lifting platform 25 is used to adjust the height of the carrier plate 21. The lifting platform 25 is fixedly connected to the ground. The lifting platform 25 has a scissor structure. The advantage of the scissor structure is that the hydraulic telescopic structure can be set on the ground and at a certain distance from the carrier plate 21 to avoid damage to it by the uncooled suspension body 1.

[0048] The carrier plate 21 has placement holes 24, which are arranged in a rectangular array and correspond one-to-one with the position and number of the contour feet 19. The outer side of the carrier plate 21 is provided with a first support member corresponding to the cylindrical support foot 12. The first support member includes a first cylindrical support foot 22 fixedly connected to the ground and a first conical head 23 fixedly connected to the top of the first cylindrical support foot 22.

[0049] The interior of the water-cooled pool 3 is provided with a second support member corresponding to the cylindrical support leg 12. The second support member includes a second cylindrical support leg 35 fixedly connected to the ground and a second conical head 36 fixedly connected to the top of the second cylindrical support leg 35.

[0050] The function of the first support member and the second support member is to support the suspended body 1. When this tooling is used, a crane is needed to lift the suspended body 1 and move it continuously between the material platform 2, the heating furnace, and the water cooling pool 3. The first support member provides a support position for the suspended body 1 at the material platform 2, and the second support member provides a support position for the suspended body 1 at the water cooling pool 3.

[0051] In one embodiment, the suspension body 1 includes a rectangular frame 11, with the top end of a cylindrical support leg 12 fixedly connected to the corner of the rectangular frame 11, and the top opening of the cylindrical support leg 12 exposed. The top of a sliding rod 14 extends from the top opening of the cylindrical support leg 12, and a limiting part 15 is fixedly provided at the bottom end of the sliding rod 14. When the sliding rod 14 slides upward relative to the cylindrical support leg 12 to a certain position, the limiting part 15 can abut against the bottom of the rectangular frame 11, thus protecting the user's drive rod 17.

[0052] In one embodiment, the rectangular frame 11 includes a frame 11b, with crossbeams 11a fixedly connected to the inner side of the frame 11b, and hollow columns 11c fixedly connected between the crossbeams 11a. The overall frame structure is adopted to reduce the material of the rectangular frame 11, thereby reducing the waste of ineffective heat (when heating the workpiece, the fixture is heated together, but the heating of the fixture is not what we need, hence it is called ineffective heat, especially in the traditional quenching process, the fixture enters the water tank together, so the fixture actually needs to be heated repeatedly. It is estimated that at least 5% of ineffective heat is wasted during the workpiece heating process).

[0053] The top of the contour foot 19 is fixedly connected to the crossbeam 11a via a cross-shaped hanger 18; the cross-shaped hanger 18 can provide good connection force while ensuring that the suspended contour foot 19 is relatively stable.

[0054] In one embodiment, the operating structure includes a first slide rod 110 and a second slide rod 111. Both the first slide rod 110 and the second slide rod 111 are slidably connected to the cross-shaped lifting rod 18, and the first slide rod 110 and the second slide rod 111 are located on both sides of the cross-shaped lifting rod 18. The first slide rod 110 serves as a guide and is a through-hole sliding connection. The second slide rod 111 is a groove-shaped tube. A C-shaped opening is opened on the side of the cross-shaped lifting rod 18, and the second slide rod 111 slides against the C-shaped opening. The pin plate 123 is fixedly connected to the second slide rod 111. The first slide rod 110 and the second slide rod 111 are fixedly connected by a connecting rod, so that the first slide rod 110 and the second slide rod 111 slide synchronously, and can drive the pin plate 123 to slide together.

[0055] At the bottom of frame 11b and at both ends of the first slide rod 110, a first threaded cylinder 112 and a second threaded cylinder 115 are fixedly connected, respectively. The end of the first slide rod 110 extends into the inner side of the first threaded cylinder 112 and the second threaded cylinder 115. The first threaded cylinder 112 and the second threaded cylinder 115 can guide and position the end of the first slide rod 110 to a certain extent. The end of the first threaded cylinder 112 away from the first slide rod 110 is threadedly connected to a first screw 113. A first adjusting ring 114 is fixedly installed on the first screw 113. The adjusting ring 114 is sleeved on the first screw 113, and then the first adjusting ring 114 is clamped and fixed by a pair of nuts. This method can adjust the position of the first adjusting ring 114. The end of the second threaded cylinder 115 away from the first slide rod 110 is threadedly connected to the second screw 116. The second adjusting ring 117 is fixedly installed on the second screw 116. The connection method of the second adjusting ring 117 is the same as that of the first adjusting ring 114. The operating component is the locking rod 118. The two ends of the locking rod 118 are fixedly connected to the first adjusting ring 114 and the second adjusting ring 117 respectively.

[0056] The user rotates the locking rod 118, simultaneously driving the first screw 113 and the second screw 116 to rotate. The first screw 113 is threaded into the second threaded cylinder 115, causing it to move to the right (or left, as an example only), pushing the first slide rod 110 to the right. At the same time, the second screw 116 is threaded into the second threaded cylinder 115, causing it to move to the right to make way for the rightward movement of the first slide rod 110. When the first slide rod 110 moves to the right, it simultaneously drives the second slide rod 111 to slide, causing the pin plate 123 to move along with it, thus moving the pin plate 123 away from the contour foot 19. The user can then rotate the locking rod 118 in the opposite direction to bring the pin plate 123 closer to the contour foot 19.

[0057] In one embodiment, a first adjusting block 119 is provided inside the first threaded cylinder 112 and between the end of the first slide rod 110 and the end of the first screw 113, and a second adjusting block 120 is provided inside the second threaded cylinder 115 and between the end of the first slide rod 110 and the end of the second screw 116.

[0058] Both the first adjusting block 119 and the second adjusting block 120 serve an adjusting function. During installation, if the axial degree of the first slide rod 110 is not appropriate, the first adjusting block 119 and the second adjusting block 120 of different lengths are used to compensate for it.

[0059] In one embodiment, the second slide rod 111 has a notch 121 on its side, and a middle plate 122 is fixedly connected to the inner side of the notch 121. A retaining plate 124 is fixedly connected to the top of the pin plate 123, and the retaining plate 124 is snapped onto the middle plate 122. The retaining plate 124 and the middle plate 122 are fixed together by rivets. This connection method of snapping together and riveting makes the pin plate 123 more stable and prevents the connection from loosening during heating.

[0060] In one embodiment, a Y-shaped sliding hole 125 is provided on the side of the pin plate 123, and one end of the pin assembly 126 has a threaded thin shaft. The threaded thin shaft passes through the Y-shaped sliding hole 125 and is threadedly connected to a fastening nut 127. The user can adjust the installation position of the pin assembly 126 and the pin plate 123 according to the model of the bucket teeth that need to be heat treated (the position of the pin mounting hole on the bucket teeth). The setting of the Y-shaped sliding hole 125 makes its adjustment range wider.

[0061] In one embodiment, the water-cooled pool 3 includes a pool body 31. A cold water inlet 33 and a hot water outlet 34 are fixedly installed on the side of the pool body 31. Cold water enters the pool body 31 from the cold water inlet 33 and then flows out from the hot water outlet 34, realizing the circulation of cold water in the pool body 31. A mesh plate 32 is provided inside the pool body 31. The mesh plate 32 includes a horizontal plate 321 and a vertical plate 322. The horizontal plate 321 and the vertical plate 322 are arranged in a cross shape, and the horizontal plate 321 is fixedly connected to the top of the vertical plate 322. Lifting parts 323 are provided at both ends of the vertical plate 322.

[0062] The bucket teeth that fall into the pool 31 will be on the net plate 32, which can be used to easily retrieve the bucket teeth.

[0063] In one embodiment, it further includes an auxiliary control component 37, which is disposed on one side of the pool body 31 and is fixedly connected to the ground to assist in driving the control component so that the bucket teeth fall into the pool body 31.

[0064] The auxiliary control component 37 includes a main rod 371, the bottom end of which is fixedly connected to the ground. A circular opening 372 is provided at the top of the main rod 371, and a side opening 373 is provided on the side of the main rod 371 near the top. A rubber column 374 is provided inside the circular opening 372, and the outside of the rubber column 374 is wrapped with heat insulation material. The top of the rubber column 374 extends to the side opening 373. A control plate 375 is slidably provided inside the side opening 373, and a control handle 376 is fixedly connected to the end of the control plate 375 away from the pool body 31.

[0065] When the suspension body 1 is suspending the bucket teeth above the pool body 31, the user can control the control panel 375 to be inserted above the drive rod 17, and then use a rubber hammer to strike the control panel 375 to make the drive rod 17 rotate, thereby driving the control component and causing the bucket teeth to fall. This auxiliary device does not require the worker to be too close to the high-temperature suspension body 1 to complete the unloading of the bucket teeth, thus improving the safety of use.

[0066] The method of using the heat treatment fixture for converting rail steel to forged bucket teeth, as described in the above embodiment, involves quenching the forged bucket teeth using the fixture, specifically including the following steps:

[0067] S1. Insert the bucket teeth, tip down, into the placement hole 24 on the carrier plate 21. Then, use a crane to lift the suspension body 1. The crane's lifting rope is connected to the lifting lug 16 at the top of the sliding rod 14. Support the cylindrical support foot 12 on the suspension body 1 on the first support member. The first cone head 23 on the first support member serves as a guide. The top of the first cylindrical support foot 22 supports the bottom of the cylindrical support foot 12. The sliding rod 14 and the drive rod 17 will slide to the bottom without interfering with the rotation of the operating components. The worker uses a rod-shaped... The tool drives the operating component to rotate, moving the pin plate 123 away from the contour foot 19. The contour foot 19 is inserted into the mounting cavity of the bucket teeth. Then, the crane lifts the suspended body 1. During the process, the sliding rod 14 is first subjected to upward force, and the drive rod 17 slides upward relative to the cylindrical support foot 12 along with the sliding rod 14, pushing the operating component of the operating structure to rotate, so that the pin plate 123 approaches the contour foot 19, and the pin assembly 126 is inserted into the mounting pin hole of the bucket teeth. Thus, the crane stably lifts the suspended body 1 loaded with bucket teeth into the heating furnace.

[0068] S2. When the bucket teeth are heated to 800℃-1400℃, the suspension body 1 carrying the bucket teeth will be hoisted into the water cooling pool 3 by a crane. The tips of the bucket teeth will be quenched for 6S-8S. Then, the workers will use rod-shaped tools to drive the operating parts to rotate, so that the pin plate 123 moves away from the contour foot 19. The bucket teeth will fall completely into the water cooling pool 3 under the action of gravity.

[0069] S3. Using the uncooled suspension body 1, repeat step S1, then repeat S2 to achieve the heat treatment of the second batch of bucket teeth, thus achieving continuous heat treatment. In step S2, the bucket teeth can be inserted tip-down into the placement holes 24 on the carrier plate 21 simultaneously, further improving the heat treatment efficiency.

[0070] The basic principles, main features, and advantages of this invention have been described above. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made without departing from the spirit and scope of the invention, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection claimed by this invention is defined by the appended claims and their equivalents.

Claims

1. A heat treatment fixture for converting rail steel into forged bucket teeth, characterized by, Include: Suspension body (1), the bottom of the suspension body (1) is fixedly connected with the corresponding profiling foot (19) of the bucket tooth seat top opening chamber, slidingly connected with the pin plate (123), and provided with a control structure for controlling the rotation of the control part to realize the approach or away of the pin plate (123) to the profiling foot (19), the side of the pin plate (123) close to the profiling foot (19) is fixedly installed with a pin assembly (126), the pin assembly (126) corresponds to the mounting pin hole on the bucket tooth, the four corners of the suspension body (1) are fixedly connected with a cylindrical support foot (12), the inner side of each cylindrical support foot (12) is slidingly connected with a sliding boom (14), the top of the sliding boom (14) is provided with an ear (16), the side of the cylindrical support foot (12) is provided with a sliding hole (13), the two sliding booms (14) corresponding to the two cylindrical support feet (12) in the same column are fixedly connected with a driving rod (17), the driving rod (17) is slidingly connected with the sliding hole (13), when the driving rod (17) slides upward relative to the cylindrical support foot (12) along with the sliding boom (14), the control part of the control structure can be rotated; The material table (2) has a lifting load plate (21), the load plate (21) is provided with a placing hole (24), the outer side of the load plate (21) is provided with a first support corresponding to the cylindrical support foot (12), the first support includes a first cylindrical leg (22) fixedly connected with the ground, a first taper head (23) fixedly connected at the top of the first cylindrical leg (22); The water cooling pool (3) is provided with a second support corresponding to the cylindrical support foot (12) in the inside, the second support includes a second cylindrical leg (35) fixedly connected with the ground, a second taper head (36) fixedly connected at the top of the second cylindrical leg (35).

2. The heat treating fixture for converting rail steel into forged bucket teeth as defined in Claim 1 wherein: The suspension body (1) includes a rectangular frame (11), the top of the cylindrical support foot (12) is fixedly connected with the corner of the rectangular frame (11), and the top opening part of the cylindrical support foot (12) is exposed, the top of the sliding boom (14) extends from the top opening of the cylindrical support foot (12), and the bottom end of the sliding boom (14) is fixedly provided with a limiting part (15).

3. The heat treating fixture for converting rail steel into forged bucket teeth as defined in claim 2 wherein: The rectangular frame (11) includes a frame (11b), the inner side of the frame (11b) is fixedly connected with a cross beam (11a), and the cross beam (11a) is fixedly connected with a hollow column (11c) between them.

4. The heat treating fixture for converting rail steel into forged bucket teeth as defined in claim 3 wherein: The top of the profiling foot (19) is fixedly connected with the cross beam (11a) through a cross boom (18); The operating structure comprises a first sliding rod (110) and a second sliding rod (111), the first sliding rod (110) and the second sliding rod (111) are both in sliding connection with the cross-shaped lifting boom (18), and the first sliding rod (110) and the second sliding rod (111) are located on both sides of the cross-shaped lifting boom (18), the pin plate (123) is fixedly connected with the second sliding rod (111), and the first sliding rod (110) is fixedly connected with the second sliding rod (111) through a connecting rod; The bottom of the frame (11b) and located at both ends of the first sliding rod (110) are fixedly connected with a first threaded cylinder (112) and a second threaded cylinder (115), and the ends of the first sliding rod (110) extend into the inside of the first threaded cylinder (112) and the second threaded cylinder (115), one end of the first threaded cylinder (112) away from the first sliding rod (110) is threadedly connected with a first screw rod (113), the first screw rod (113) is fixedly installed with a first adjusting ring (114), one end of the second threaded cylinder (115) away from the first sliding rod (110) is threadedly connected with a second screw rod (116), the second screw rod (116) is fixedly installed with a second adjusting ring (117), and the operating component is a locking rod (118), both ends of the locking rod (118) are fixedly connected with the first adjusting ring (114) and the second adjusting ring (117).

5. The heat treating fixture for converting rail steel into forged bucket teeth as defined in claim 4 wherein: The inside of the first threaded cylinder (112) and located between the end of the first sliding rod (110) and the end of the first screw rod (113) is provided with a first adjusting block (119), and the inside of the second threaded cylinder (115) and located between the end of the first sliding rod (110) and the end of the second screw rod (116) is provided with a second adjusting block (120).

6. The heat treating fixture for converting rail steel into forged bucket teeth as defined in claim 4 wherein: The side of the second sliding rod (111) is provided with a notched portion (121), the inside of the notched portion (121) is fixedly connected with a middle plate (122), the top of the pin plate (123) is fixedly connected with a clamping plate (124), the clamping plate (124) is clamped on the middle plate (122), and the clamping plate (124) and the middle plate (122) are fixed by rivets.

7. The heat treating fixture for converting rail steel into forged bucket teeth as defined in claim 4 wherein: The side of the pin plate (123) is provided with a Y-shaped sliding hole (125), one end of the pin assembly (126) has a threaded thin shaft, and the threaded thin shaft is threadedly connected with a fastening nut (127) after penetrating through the Y-shaped sliding hole (125).

8. The heat treating fixture for converting rail steel into forged fighting tooth as claimed in claim 1 wherein: The bottom of the carrier plate (21) is installed with a lifting platform (25), the lifting platform (25) is fixedly connected with the ground, and the lifting platform (25) is of a scissor type structure; The water cooling pool (3) comprises a pool body (31), the side of the pool body (31) is fixedly installed with a cold water inlet (33) and a hot water outlet (34), the inside of the pool body (31) is provided with a mesh plate (32), the mesh plate (32) comprises a horizontal plate (321) and a vertical plate (322), the horizontal plate (321) and the vertical plate (322) are arranged in a cross shape, the horizontal plate (321) is fixedly connected to the top of the vertical plate (322), and both ends of the vertical plate (322) are provided with lifting portions (323).

9. The heat treating fixture for converting rail steel into forged bucket teeth as defined in claim 8 wherein, Further comprising: An auxiliary operating assembly (37) is arranged on one side of the pool body (31), and the auxiliary operating assembly (37) is fixedly connected with the ground; The auxiliary operating assembly (37) comprises a main body rod (371), the bottom end of the main body rod (371) is fixedly connected with the ground, a round opening (372) is arranged at the top of the main body rod (371), a side opening (373) is arranged on the side of the main body rod (371) and close to the top, a rubber column (374) is arranged in the round opening (372), the top of the rubber column (374) extends to the side opening (373), and an operating plate (375) is slidably arranged in the side opening (373); and one end of the operating plate (375) away from the pool body (31) is fixedly connected with an operating handle (376).

10. A method of using a heat treatment fixture for converting rail steel into forged bucket teeth, characterized by, The heat treatment tool for converting rail steel into forged bucket teeth according to any one of claims 1-9 is used for quenching the bucket teeth after forging, and specifically comprises the following steps: S1, the tip of the bucket tooth is inserted into the placing hole (24) arranged on the carrier plate (21) with the tip downward, then the suspension main body (1) is lifted by the crane, the hoisting rope of the crane is connected to the lifting lug (16) at the top of the sliding lifting rod (14), the cylindrical supporting leg (12) on the suspension main body (1) is supported on the first supporting piece, the worker drives the operating member to rotate by using a rod-shaped tool, the pin plate (123) is away from the profiling leg (19), the profiling leg (19) is inserted into the mounting cavity of the bucket tooth, then the suspension main body (1) is lifted by the crane, in the process, the sliding lifting rod (14) is first subjected to upward force, the driving rod (17) slides upward relative to the cylindrical supporting leg (12) along with the sliding lifting rod (14), the operating member of the operating structure is driven to rotate, the pin plate (123) is close to the profiling leg (19), the pin assembly (126) is inserted into the mounting pin hole of the bucket tooth, and thus the suspension main body (1) loaded with the bucket tooth is stably lifted into the heating furnace by the crane; S2, when the bucket tooth is heated to 800-1400℃, the suspension main body (1) loaded with the bucket tooth is stably lifted into the water cooling pool (3) by the crane, the tip of the bucket tooth is quenched for 6-8 seconds, then the worker drives the operating member to rotate by using a rod-shaped tool, the pin plate (123) is away from the profiling leg (19), and the bucket tooth completely falls into the water cooling pool (3) under the action of gravity; S3, the above step S1 is repeated by using the suspension main body (1) without cooling, and then S2 is repeated, so that the heat treatment of the second batch of bucket teeth is realized, and continuous heat treatment is realized.

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