A trolley type forging furnace for manufacturing an alloy forging

Abstract

The present application relates to heat treatment equipment technical field, especially a kind of trolley type forging furnace for alloy forge piece manufacturing, including furnace body, trolley, sand groove, sand cutter, propelling structure and drive mechanism, furnace body bottom is equipped with carrying hole, and one end of furnace body is equipped with opening;Trolley is located below furnace body, and trolley is equipped with door;Sand groove is equipped in the inner cavity side of furnace body, and sand groove is equipped with pull-out hole, and dry sand is built-in in sand groove;Sand cutter is equipped on trolley, and enters sand groove by pull-out hole;Propelling structure is equipped with two groups in each sand groove, and two groups of propelling structure are symmetrically arranged in sand groove, when two groups of propelling structure are mutually close or mutually far away, dry sand in sand groove is gathered to raise or dispersed to reduce;Drive mechanism can provide synchronous close or synchronous far away power to two groups of propelling structure.The trolley type forging furnace for alloy forge piece manufacturing provided by the present application, the dry sand distribution in its sand groove is more uniform, can better sealing effect to sand cutter and furnace body.

Description

Technical Field

[0001] This invention relates to the field of heat treatment equipment technology, and specifically to a trolley-type forging furnace for manufacturing alloy forgings. Background Technology

[0002] A bogie-type forging furnace is a periodic industrial heating device specifically designed for large, heavy metal workpieces. Its core feature is the use of a movable bogie to feed the workpiece into the furnace for heat treatment processes such as annealing, normalizing, and tempering. This design perfectly solves the pain point of difficult loading and unloading of ultra-large workpieces and is widely used in machinery manufacturing, metallurgy, and aerospace industries.

[0003] Car-type forging furnaces are typically sealed with sand to ensure good airtightness of the furnace chamber under high-temperature operating conditions, reduce heat loss, prevent cold air intrusion, and improve thermal efficiency.

[0004] The existing Chinese patent document, CN216011706U, discloses a sand sealing plate installed on a kiln car and a kiln car using the sand sealing plate. The sand sealing plate body is equivalent to the sand cutter in a bogie-type forging furnace, the kiln is equivalent to the furnace body, and the kiln car is equivalent to the bogie. The sand sealing plate body can move synchronously with the kiln car, and during the movement, it can drive sand blocks out of the kiln, which may cause a decrease in the kiln's sealing performance. At the same time, when the sand sealing plate body moves, it can drive the sand blocks in the kiln to move, which is very likely to cause uneven distribution of sand blocks in the kiln, which may affect the kiln's sealing performance. Summary of the Invention

[0005] This invention provides a trolley-type forging furnace for manufacturing alloy forgings, in which the dry sand in the sand trough is more evenly distributed, which can provide a better sealing effect for the sand cutter and the furnace body.

[0006] The present invention provides a trolley-type forging furnace for manufacturing alloy forgings, which adopts the following technical solution: A trolley-type forging furnace for alloy forging manufacturing includes a furnace body, a trolley, a sand trough, a sand cutter, a propulsion structure, and a drive mechanism. The furnace body has a transport hole at its bottom and an opening communicating with the transport hole at one end. The trolley is movably positioned below the furnace body and is used to transport the workpiece to be processed from the opening side of the furnace body along the transport hole into the furnace body. The trolley is equipped with a sealing door for sealing the opening. The sand trough is located on both sides of the furnace body cavity, with a insertion / removal hole at the end near the opening. The sand trough contains dry sand. The sand cutter is mounted on the trolley and corresponds to the sand trough, and can enter the corresponding sand trough through the insertion / removal hole. The propulsion structure is movably positioned within the sand trough, with two sets in each sand trough. The two sets of propulsion structures are symmetrically arranged about the central axis of the sand trough. When the two sets of propulsion structures approach or move away from each other, the dry sand in the sand trough gathers and rises or disperses and lowers. The drive mechanism is configured to provide synchronous approaching or synchronous moving away power to the propulsion structures within the sand trough.

[0007] Furthermore, the propulsion structure is a push rod, the length direction of which is parallel to the length direction of the sand trough. The push rod is slidably disposed at the bottom of the sand trough, and the driving mechanism is disposed between the push rod and the sand trough.

[0008] Furthermore, the propulsion structure includes a first mounting plate, a first propulsion block, a second mounting plate, and a second propulsion block. The driving mechanism includes a first driving structure and a second driving structure. The length directions of the first mounting plate and the second mounting plate are both parallel to the sand trough. The first mounting plate and the second mounting plate are respectively disposed between the two end faces of the sand trough through the first driving structure and the second driving structure. The first driving structure is used to provide the first mounting plate in the sand trough with the power to move closer to or further away from each other, and the second driving structure is used to provide the second mounting plate in the sand trough with the power to move closer to or further away from each other. The first mounting plate is located at the bottom of the sand trough. Multiple first and second propulsion blocks are provided. Multiple first propulsion blocks are all set on the first mounting plate and are evenly distributed at equal intervals along the length of the first mounting plate. The second mounting plate is located above the first propulsion blocks. Multiple second propulsion blocks are all set on the side of the second mounting plate facing the first propulsion blocks and are respectively inserted into multiple gaps of the multiple first propulsion blocks. The second propulsion blocks are used to seal the gaps between the first propulsion blocks.

[0009] Furthermore, the first mounting plate is provided with a first pushing hole, the second mounting plate is provided with a second pushing hole, and the sand groove is provided with a first limiting hole and a second limiting hole on one side wall of the opening, which are corresponding to and communicate with the first pushing hole and the second pushing hole. The first driving structure includes a first driving rod, a first driving groove, and a first driving block. The first driving rod passes through the first limiting hole and its corresponding first pushing hole. One end of the first driving rod extends to the outside of the sand groove and is configured to be able to penetrate the first pushing hole under the push of the sealing door. The other end is provided with a first elastic element between itself and the hole wall of the first pushing hole away from the opening. The first elastic element is configured to make the first driving rod tend to extend out of the first pushing hole. The first driving groove is opened on the hole wall of the first pushing hole. The first driving block is fixed on the first driving rod. The first driving block is inserted into the first driving groove and abuts against the groove wall of the first driving groove near the opening. When the sealing door pushes the first driving rod into the first pushing hole, the first driving block can push the first mounting blocks closer to each other through the first driving groove. The second driving structure includes a second driving rod, a second driving groove, and a second driving block. The second driving rod passes through the second limiting hole and its corresponding second pushing hole. One end of the second driving rod extends to the outside of the sand groove and is configured to be able to penetrate the second pushing hole under the push of the sealing door. The other end is provided with a second elastic member between itself and the hole wall of the second pushing hole away from the opening. The second elastic member is configured to make the second driving rod tend to extend out of the second pushing hole. The second driving groove is opened on the hole wall of the second pushing hole. The second driving block is fixed on the second driving rod. The second driving block is inserted into the second driving groove and abuts against the groove wall of the second driving groove near the opening. When the sealing door pushes the second driving rod into the second pushing hole, the second driving block can push the second mounting blocks closer to each other through the second driving groove.

[0010] Furthermore, both the first elastic element and the second elastic element are elastic telescopic rods.

[0011] Furthermore, the first driving groove includes a first sub-straight groove, a second sub-straight groove, and a first inclined groove. The length directions of the first sub-straight groove and the second sub-straight groove are both parallel to the length direction of the sand groove. The first sub-straight groove and the second sub-straight groove are respectively connected to the two ends of the first inclined groove. The first sub-straight groove is close to the opening and the central axis of the sand groove. The second drive groove includes a third sub-straight groove, a fourth sub-straight groove, and a second inclined groove. The length directions of the third sub-straight groove and the fourth sub-straight groove are parallel to the length direction of the sand groove. The third sub-straight groove and the fourth sub-straight groove are respectively connected to the two ends of the second inclined groove. The third sub-straight groove is close to the opening and the central axis of the sand groove. The projected length of the third sub-straight groove on the central axis of the sand trough is equal to the sum of the projected lengths of the first sub-straight groove and the first inclined groove; the projected length of the second sub-straight groove on the central axis of the sand trough is equal to the sum of the projected lengths of the fourth sub-straight groove and the second inclined groove.

[0012] Furthermore, both the first driving groove and the second driving groove are provided in multiples, with the multiple first driving grooves being evenly distributed along the length direction of the first propulsion hole, and the multiple second driving grooves being evenly distributed along the length direction of the second propulsion hole; Multiple first drive blocks and multiple second drive blocks are provided. Multiple first drive blocks are fixed on the first drive rod and inserted into multiple first drive slots respectively. Multiple second drive blocks are fixed on the second drive rod and inserted into multiple second drive slots respectively.

[0013] Furthermore, both the first and second propulsion blocks are isosceles trapezoidal blocks. The large end face of the first propulsion block is fixed on the first mounting plate, and the small end face of the second propulsion block is inserted into the gap between the first propulsion blocks and abuts against the first mounting plate, thereby sealing the gap between the first propulsion blocks.

[0014] Furthermore, both the furnace body and the sealing door are provided with furnace lining.

[0015] Furthermore, a track is laid beneath the furnace body for the trolley to travel on.

[0016] The beneficial effects of this invention are: The present invention discloses a trolley-type forging furnace for manufacturing alloy forgings. When the trolley enters the furnace body, the sand cutter on the trolley enters the sand trough through the insertion hole and is located above the sand surface in the sand trough. The propulsion structure can approach each other in the sand trough through the driving mechanism. When the propulsion structure approaches each other, it can push the dry sand in the sand trough to gather and rise. The raised sand surface can submerge the sand cutter and accumulate on both sides of the sand cutter. The dry sand accumulated on both sides of the sand cutter can seal the sand cutter, thereby achieving the sealing of the furnace body. In this invention, the sand cutter is not immediately inserted into the dry sand after being inserted into the sand groove. Instead, the surface of the dry sand in the sand groove gradually rises until it covers the bottom of the sand cutter, thereby sealing the sand cutter and the furnace body. The sand cutter is inserted into the dry sand in a vertical insertion method rather than a horizontal pulling method. The vertical insertion method not only makes it less likely to carry the dry sand out of the sand groove, but also helps to maintain the uniform distribution of the dry sand in the sand groove. The uniformly distributed dry sand can provide a better seal for the sand cutter, enabling the trolley-type forging furnace for alloy forging manufacturing provided by this invention to have better sealing performance.

[0017] Furthermore, when the two first mounting plates approach each other under the action of the first driving structure, the first push block can push the dry sand in the sand trough to gather and rise. The rising dry sand can submerge the bottom of the sand cutter and accumulate on both sides of the sand cutter to achieve a seal on the sand cutter. When the two second mounting plates approach each other under the action of the second drive structure, the second propulsion block can further improve the sand surface of the dry sand, extend the sealing path of the dry sand to the sand knife, and improve the sealing effect of the dry sand to the sand knife. At the same time, when the second propulsion block and the first propulsion block move relative to each other, they can also provide a certain shearing force to the dry sand accumulated at the angle between the first propulsion block and the second propulsion block, which can reduce the possibility of dry sand clumping in the sand trough.

[0018] Furthermore, when the first drive block passes through the first inclined groove, the first propulsion blocks on both sides of the central axis of the sand groove approach each other, which can gather and raise the dry sand in the sand groove. The raised dry sand can cover the bottom of the sand knife, thereby achieving the sealing of the furnace body by the present invention. When the second drive block passes through the second inclined groove, the second propulsion blocks in the sand groove approach each other, which can further gather the dry sand, extend the sealing path of the dry sand to the sand knife, and thus improve the sealing effect of the dry sand on the sand knife and the furnace body. The length restrictions of the first sub-straight groove, the second sub-straight groove, the third sub-straight groove, the fourth sub-straight groove, the first inclined groove, and the second inclined groove in the length direction of the sand trough allow the first and second propulsion blocks to move in a staggered manner, thereby providing a certain shearing force to the dry sand at the angle between the first and second propulsion blocks. This reduces the possibility of dry sand agglomeration in the sand trough and helps maintain the uniformity of dry sand distribution in the sand trough.

[0019] Furthermore, by setting the first and second propulsion blocks as isosceles trapezoidal blocks, not only can the dry sand in the sand trough be gathered together, but when the second propulsion blocks approach each other, a certain pressure can also be applied to the surface of the gathered dry sand, making the gathered dry sand more compact and improving the sealing effect of the dry sand on the sand knife and furnace body. At the same time, it can also crush the clumps of dry sand, so that the dry sand is evenly distributed in the sand trough. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a trolley-type forging furnace for manufacturing alloy forgings, provided in an embodiment of the present invention. Figure 2 A side view of a trolley-type forging furnace for manufacturing alloy forgings provided in an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the AA direction; Figure 4for Figure 3 A magnified structural diagram of part B in the middle section; Figure 5 for Figure 3 The diagram shows an enlarged view of part B in the initial state of a trolley-type forging furnace for manufacturing alloy forgings. Figure 6 This is a partial exploded structural diagram of a trolley-type forging furnace for manufacturing alloy forgings, provided in an embodiment of the present invention. Figure 7 for Figure 6 A magnified structural diagram of section C; Figure 8 A schematic diagram of the first and second propulsion structures of a trolley-type forging furnace for manufacturing alloy forgings provided in an embodiment of the present invention; Figure 9 for Figure 8 The diagram shows the exploded structure of the first and second propulsion structures. Figure 10 A side view of the first and second propulsion structures of a trolley-type forging furnace for manufacturing alloy forgings, provided in an embodiment of the present invention; Figure 11 for Figure 10 A schematic diagram of the cross-sectional structure along the DD direction; Figure 12 for Figure 10 A schematic diagram of the cross-sectional structure along the EE direction.

[0022] In the picture: 100. Furnace body; 110. Opening; 200. Trolley; 201. Track; 210. Sealing gate; 300, Sand groove; 301, First limiting hole; 302, Second limiting hole; 310, Insertion / removal hole; 400. Sanding knife; 500, Propulsion structure; 510, First mounting plate; 511, First propulsion hole; 520, First propulsion block; 530, Second mounting plate; 531, Second propulsion hole; 540, Second propulsion block; 610, First drive rod; 620, First drive groove; 621, First sub-straight groove; 622, Second sub-straight groove; 623, First inclined groove; 630, First drive block; 710, Second drive rod; 720, Second drive groove; 721, Third sub-straight groove; 722, Fourth sub-straight groove; 723, Second inclined groove; 730, Second drive block. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as limiting the invention.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact 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 indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.

[0026] like Figures 1 to 12 As shown in the figure, an embodiment of the present invention provides a trolley-type forging furnace for manufacturing alloy forgings, comprising a furnace body 100, a trolley 200, a sand trough 300, a sand cutter 400, a propulsion structure 500, and a drive mechanism.

[0027] Specifically, the furnace body 100 is provided with a support frame at its bottom, and the furnace body 100 is set on the ground by the support frame. The furnace body 100 is a steel structure shell with an internal furnace lining. The bottom of the furnace body 100 has a transport hole parallel to the length direction of the furnace body 100. One end of the furnace body 100 has an opening 110 communicating with the transport hole, and the other end of the furnace body 100 is closed.

[0028] A track 201 is laid on the ground below the furnace body 100. The track 201 is a steel track and is parallel to the length direction of the furnace body 100. The trolley 200 is movably set on the track 201 and can travel on the track 201 by external traction equipment.

[0029] The trolley 200 can be an existing movable car body structure with load-bearing capacity and high temperature resistance. When the trolley 200 moves on the track 201 toward the interior of the furnace body 100, the trolley 200 can serve as the furnace bottom of the furnace body 100, enter the transport hole from the opening 110 of the furnace body 100, and abut against the side wall of the inner cavity of the furnace body 100 away from the opening 110 of the furnace body 100.

[0030] The trolley 200 is equipped with a sealing door 210. When one end of the trolley 200 extends into the furnace body 100 and abuts against the cavity wall on the side of the furnace body 100 away from the opening 110, the sealing door 210 abuts against the side of the opening 110 of the furnace body 100 and can completely seal the opening 110 of the furnace body 100. The side of the sealing door 210 facing the inner cavity of the furnace body 100 is also equipped with a furnace lining. The furnace lining is used to protect the furnace body 100 and the sealing door 210 from corrosion by high-temperature molten metal and to maintain a stable temperature inside the furnace.

[0031] Two sand troughs 300 are provided, each fixed to one of the two side walls of the furnace body 100, specifically on the side walls of the transport hole. Each sand trough 300 is a long, rectangular trough, with its length parallel to the length of the furnace body 100. One end of the sand trough 300 at the opening 110 has a pull-in hole 310 for easy insertion and removal of the sand cutter 400. The sand trough 300 contains dry sand, which can be quartz sand or foundry sand with a particle size of 0.5-2 mm.

[0032] The sand cutter 400 can be a long strip of sheet steel plate mounted on the trolley 200, with its length parallel to the length of the furnace body 100 and the sand trough 300. Two sand cutters 400 are provided on the trolley 200, located on opposite sides near the trolley 200. Each sand cutter 400 corresponds to one of the two sand troughs 300. When the trolley 200 enters the transport hole, the sand cutter 400 can pass through the insertion / removal hole 310 on the corresponding sand trough 300 and enter the sand trough 300. When the sand cutter 400 enters the sand trough 300 through the insertion / removal hole 310, it is positioned above the dry sand within the sand trough 300.

[0033] The propulsion structure 500 is movably installed within the sand trough 300, and each sand trough 300 contains two sets of propulsion structures 500, which are symmetrically arranged about the central axis of the sand trough 300. When the two sets of propulsion structures 500 move closer to or further away from each other, the dry sand in the sand trough 300 gathers and rises or disperses and lowers.

[0034] The propulsion structure 500 can be a push rod with an isosceles trapezoidal cross-section. The length direction of the push rod is parallel to the sand trough 300, and the large end face of the push rod contacts the bottom of the sand trough 300 and can slide in a direction perpendicular to the length direction of the sand trough 300. When the two push rods approach each other, the push rods can push the dry sand in the sand trough 300 to gather, thereby raising the dry sand surface in the sand trough 300. When the dry sand surface submerges the bottom of the sand cutter 400, the sand cutter 400 is sealed, which in turn seals the furnace body 100.

[0035] The drive mechanism can be mounted on the sand trough 300 and can provide synchronous approach or synchronous departure power to the two sets of propulsion structures 500 within the sand trough 300.

[0036] The operating principle of this invention is as follows: First, the trolley 200 carrying the workpiece to be processed is moved along the track 201 into the furnace body 100 by an external traction device. During this period, the sand knife 400 on the trolley 200 enters the sand trough 300 through the corresponding insertion hole 310 on the sand trough 300 and is located above the sand surface of the dry sand in the sand trough 300. When the trolley 200 abuts against the side wall of the inner cavity of the furnace body 100 away from the opening 110, the sealing door 210 on the trolley 200 blocks the opening 110 of the furnace body 100, thereby sealing the opening 110. Then, the driving mechanism provides the two sets of propulsion structures 500 in the sand trough 300 with the power to move closer to each other. When the two sets of propulsion structures 500 move closer to each other, the dry sand between the two sets of propulsion structures 500 can continuously gather and rise. The continuously rising dry sand surface can submerge the bottom of the sand cutter 400 and accumulate on both sides of the sand cutter 400, which can seal the sand cutter 400 and thus seal the furnace body 100. When the dry sand surface is above the appropriate height of the sand cutter 400 or the drive mechanism provides power to the propulsion structure 500 to ensure that the sand cutter 400 is inserted into the gathered and raised dry sand, the operation of the drive mechanism is stopped, and then the furnace body 100 begins to fire the workpiece on the trolley 200. When the workpiece on the trolley 200 has finished firing and the seal of the dry sand on the furnace body 100 needs to be released, the drive mechanism drives the two sets of propulsion structures 500 in the sand trough 300 to move away from each other. During the movement, the dry sand surface between the two sets of propulsion structures 500 drops. When the two sets of propulsion structures 500 return to their initial state, that is, when the sand cutter 400 is just inserted into the sand trough 300, the operation of the drive mechanism stops. During this process, due to the good fluidity of the dry sand, the dry sand surface in the sand trough 300 can return to below the sand cutter 400. Then, the trolley 200 is pulled out of the furnace body 100 by an external traction device, thus completing the heat treatment of the workpiece according to the present invention. In this invention, the sand cutter 400 is not immediately inserted into the dry sand after being inserted into the sand groove 300. Instead, the surface of the dry sand in the sand groove 300 is allowed to gradually rise so that the surface of the dry sand covers the bottom of the sand cutter 400, thereby completing the sealing of the sand cutter 400 and the furnace body 100. The sand cutter 400 is inserted into the dry sand in a manner similar to vertical insertion rather than horizontal pulling. The vertical insertion method not only makes it less likely to disrupt the distribution of dry sand in the sand groove 300, but also makes it less likely to carry dry sand out of the sand groove 300. This is more conducive to maintaining the uniform distribution of dry sand in the sand groove 300, thereby achieving a better sealing effect on the furnace body 100.

[0037] In some embodiments, the propulsion structure 500 can be push rods, with two push rods movably disposed in each sand trough 300. The push rod can be a long rod with an isosceles trapezoidal cross-section, its length direction parallel to the sand trough 300, and capable of sliding in a direction perpendicular to the length direction of the sand trough 300. The push rod has a large end face and a small end face, which are parallel to each other. The large end face of the push rod contacts the bottom of the sand trough 300. When the two push rods approach each other, they can push the dry sand in the sand trough 300 to gather, thereby raising the dry sand surface in the sand trough 300. When the dry sand surface submerges the bottom of the sand cutter 400, the sand cutter 400 is sealed, thus sealing the furnace body 100.

[0038] In this embodiment, the driving mechanism can be an electric cylinder or other power component located at the bottom of the sand trough 300. A driving hole perpendicular to the length of the sand trough 300 can be opened at the bottom of the sand trough 300. A connecting rod can be installed at the output end of the electric cylinder. The connecting rod passes through the driving hole and is fixedly connected to the large end face of the push rod. When the electric cylinder is running, it can drive the push rod to slide within the sand trough 300 through the connecting rod, thereby enabling the two push rods within the sand trough 300 to move closer or further apart, thus achieving the aggregation or dispersion of dry sand within the sand trough 300.

[0039] It should be noted that in this embodiment, the length of the drive hole is less than the width of the bottom surface of the push rod, that is, the width of the large end face of the push rod. No matter how the push rod slides in the sand trough 300, the large end face of the push rod covers the drive hole, which avoids the possibility of dry sand in the sand trough 300 leaking through the drive hole and ensures the feasibility of this embodiment.

[0040] In some embodiments, the propulsion structure 500 includes a first mounting plate 510, a first propulsion block 520, a second mounting plate 530, and a second propulsion block 540.

[0041] Specifically, both the first mounting plate 510 and the second mounting plate 530 are elongated plates whose length direction is parallel to the length direction of the sand trough 300. Both the first mounting plate 510 and the second mounting plate 530 are located within the sand trough 300, with the first mounting plate 510 abutting against the bottom surface of the sand trough 300. The two ends of the first mounting plate 510 and the second mounting plate 530 respectively contact the two end walls of the sand trough 300.

[0042] The first push block 520 and the second push block 540 can be rectangular blocks with similar structures, and multiple first push blocks 520 and multiple second push blocks 540 are provided. Multiple first push blocks 520 are evenly and equally spaced along the length of the first mounting plate 510 on the side of the first mounting plate 510 away from the bottom of the sand trough 300. The second mounting plate 530 is located above the first push blocks 520 within the sand trough 300. Multiple second push blocks 540 are evenly and equally fixed along the length of the second mounting plate 530 on the side of the second mounting plate 530 facing the first push blocks 520, and the multiple second push blocks 540 are respectively inserted into multiple gaps between the multiple first push blocks 520. The second push blocks 540, in the gaps between adjacent first push blocks 520, contact the sides of the two first push blocks 520 that are close to each other and the first mounting plate 510, thereby achieving a seal between the gaps between the first push blocks 520.

[0043] In this embodiment, the driving mechanism includes a first driving structure and a second driving structure. The first driving structure is used to provide power to the two first mounting plates 510 in the sand tank 300 to move closer or further away from each other, and the second driving structure is used to provide power to the two second mounting plates 530 in the sand tank 300 to move closer or further away from each other.

[0044] When the first drive structure and the second drive structure do not apply power to the first mounting plate 510 and the second mounting plate 530, the two first mounting plates 510 in the sand trough 300 abut against the two side walls of the sand trough 300 under the action of the first drive structure. Similarly, the two second mounting plates 530 abut against the two side walls of the sand trough 300 under the action of the second drive structure.

[0045] The first driving structure can be two electric push rods. Mounting holes corresponding to the first mounting plate 510 can be opened on both sides of the sand trough 300. The first mounting plate 510 has propulsion grooves on both sides corresponding to the mounting holes on both sides of the sand trough 300. The two electric push rods are respectively positioned on both sides of the sand trough 300 and located between the corresponding mounting holes and propulsion grooves. One end of the electric push rod is placed in the mounting hole, and the other end is inserted into the propulsion groove and fixedly connected to the bottom of the groove. The extension direction of the electric push rod is perpendicular to the length direction of the sand trough 300. When the electric push rods on both sides of the sand trough 300 run synchronously, the two first mounting plates 510 in the two sets of propulsion structures 500 within the sand trough 300 can be moved closer or further apart. Similarly, the second drive structure can also be two electric push rods, and holes corresponding to the second mounting plate 530 are opened on both sides of the sand trough 300. Corresponding grooves are opened on the two second mounting plates 530. The electric push rods are set between the corresponding holes and grooves. When the electric push rods are running, they can push the two second mounting plates 530 closer to each other or further away from each other.

[0046] In this embodiment, the first and second drive structures can operate synchronously. When the first and second drive structures are running synchronously, the first mounting plate 510, the second mounting plate 530, the first push block 520, and the second push block 540 in the same set of propulsion structures 500 act as a whole, similar to the push rod in the above embodiment, and can push the dry sand in the sand trough 300 to gather. After the gathered dry sand surface covers the bottom of the sand cutter 400, the sand cutter 400 and the furnace body 100 can be sealed. In this embodiment, the first and second driving structures can operate asynchronously. When the first and second driving structures operate asynchronously, in addition to moving closer and further apart, the corresponding first propulsion block 520 and the corresponding second propulsion block 540 will inevitably experience misalignment. When the first propulsion block 520 or the second propulsion block 540 moves closer, it can push the dry sand in the sand trough 300 to gather and rise, extending the sealing path of the dry sand to the sand cutter 400, thus achieving a seal between the dry sand and the sand cutter 400 and the furnace body 100. When the first propulsion block 520 and the second propulsion block 540 move in a misaligned manner, it can provide a certain shearing force to the dry sand located at the angle between the first propulsion block 520 and the second propulsion block 540, thereby breaking up the clumps in the dry sand, reducing the impact of the clumps on the distribution of dry sand in the sand trough 300, and making it more conducive to maintaining a uniform distribution of dry sand in the sand trough 300.

[0047] It should be noted that in this embodiment, the second mounting plate 530 can abut against the sand cutter 400 under the push of the second drive structure. When the second mounting plate 530 abuts against the sand cutter 400, the two second mounting plates 530 can not only reinforce the sand cutter 400, but also seal the groove of the sand groove 300, further improving the sealing effect of the furnace body 100.

[0048] Of course, a sealing felt can also be attached to the side of the second mounting plate 530 facing the sander 400, using the elasticity and wear resistance of the sealing felt to achieve shock absorption and dustproof sealing of the side of the sander 400.

[0049] Furthermore, a first pushing hole 511 is provided on the first mounting plate 510, and a second pushing hole 531 is provided on the second mounting plate 530. The length directions of the first pushing hole 511 and the second pushing hole 531 are parallel to the length directions of the first mounting plate 510 and the second mounting plate 530, respectively. A first limiting hole 301 and a second limiting hole 302, corresponding to and communicating with the first pushing hole 511 and the second pushing hole 531, are provided on the side wall of the sand trough 300 located at the opening 110.

[0050] In this embodiment, there are two first mounting plates 510 and two mounting plates 530 in the sand trough 300, and two corresponding first push holes 511 and two push holes 531 are provided. Two first limiting holes 301 and two second limiting holes 302 are provided on the wall of the sand trough 300 at the opening 110.

[0051] The first driving structure includes a first driving rod 610, a first driving groove 620, and a first driving block 630. The first driving rod 610 is a long straight rod parallel to the first propulsion hole 511 in its length direction, and the first driving rod 610 passes through the first propulsion hole 511. One end of the first driving rod 610 passes through the first limiting hole 301 corresponding to the first propulsion hole 511 and extends to the outside of the sand groove 300, and is configured to be able to penetrate the first propulsion hole 511 under the push of the sealing door 210. The other end is provided with a first elastic element between itself and the hole wall of the first propulsion hole 511 away from the sealing door 210. The first elastic element can be an elastic telescopic rod, and the first elastic element is configured to give the first driving rod 610 a tendency to extend out of the first propulsion hole 511. The first drive groove 620 is formed on one side of the hole wall of the first push hole 511. The first drive block 630 is fixed on the side of the first drive rod 610 facing the bottom of the sand trough 300 and inserted into the first drive groove 620. The first drive block 630 is a circular block and its diameter matches the groove width of the first drive groove 620.

[0052] The second drive structure includes a second drive rod 710, a second drive groove 720, and a second drive block 730. The second drive rod 710 is a long straight rod parallel to the second push hole 531 in its length direction, and it passes through the second push hole 531. One end of the second drive rod 710 passes through the second limiting hole 302 corresponding to the second push hole 531 and extends to the outside of the sand groove 300, and is configured to be able to penetrate the second push hole 531 under the push of the sealing gate 210. The other end of the second drive rod 710 is provided with a second elastic element between it and the hole wall of the second push hole 531 away from the sealing gate 210. The second elastic element can be an elastic telescopic rod, and it is configured to give the second drive rod 710 a tendency to extend out of the second push hole 531. The second drive groove 720 is opened on one side of the hole wall of the second propulsion hole 531. The second drive block 730 is fixed on the side of the second drive rod 710 facing the bottom of the sand trough 300 and inserted into the second drive groove 720. The second drive block 730 is a circular block and its diameter matches the groove width of the second drive groove 720.

[0053] In this embodiment, both the first drive groove 620 and the second drive groove 720 can be parallel inclined grooves in the length direction. The inclined grooves are configured such that when the first drive rod 610 or the second drive rod 710 penetrates the corresponding first push hole 511 or second push hole 531, and the first drive block 630 or the second drive block 730 moves within the corresponding inclined groove, pressure is applied to the groove wall, thereby pushing the first mounting plate 510 or the second mounting plate 530 closer together. Furthermore, the lengths of the first drive rod 610 and the second drive rod 710 extending out of the corresponding first limiting hole 301 and second limiting hole 302 are equal. During the process of the trolley 200 entering the furnace body 100, the sealing door 210 can push the first drive rod 610 and the second drive rod 710 deeper into the corresponding first propulsion hole 511 and second propulsion hole 531. When the first drive rod 610 and the second drive rod 710 are deeper into the corresponding first propulsion hole 511 and second propulsion hole 531, due to the restriction of the first limiting hole 301 and the second limiting hole 302, the first drive rod 610 and the second drive rod 710 can only move in a direction parallel to the sand trough 300.

[0054] When the first drive rod 610 and the second drive rod 710 penetrate into the corresponding first propulsion hole 511 and the second propulsion hole 531, the first drive block 630 and the second drive block 730 move along the corresponding first drive groove 620 and the second drive groove 720, thereby applying pressure to the corresponding first drive groove 620 and the second drive groove 720, and thus pushing the first mounting plate 510 and the second mounting plate 530. Since the length directions of the first drive groove 620 and the second drive groove 720 are parallel, the first drive block 630 and the second drive block 730 can simultaneously push the corresponding first mounting plate 510 and the second mounting plate 530 closer to each other, thereby achieving the gathering and raising of dry sand in the sand trough 300, and thus achieving the sealing of the sand cutter 400 and the furnace body 100.

[0055] The first drive groove 620 and the second drive groove 720 can also be inclined grooves that are not parallel in the length direction. In this case, the inclined groove is also configured to apply pressure to the groove wall when the first drive block 630 or the second drive block 730 moves in the corresponding inclined groove, thereby pushing the first mounting plate 510 or the second mounting plate 530 closer to each other or further away from each other. Because the length directions of the first drive groove 620 and the second drive groove 720 are not parallel, the movement paths of the first drive block 630 and the second drive block 730 are also not parallel. During the process of the sealing door 210 pushing the first drive rod 610 and the second drive rod 710 deeper into the corresponding first push hole 511 and second push hole 531, the pressures applied by the first drive block 630 and the second drive block 730 to the first mounting plate 510 and the second mounting plate 530 are also different. Consequently, the first mounting plate 510 and the second mounting plate 530 cannot maintain synchronization, and a misalignment will inevitably occur between them. During this misalignment process, the first push block 520 and the second push block 540 can provide shearing force to the dry sand located between their included angle, thereby breaking up the clumps in the dry sand, reducing the impact of the clumps on the distribution of dry sand in the sand trough 300, and making it more conducive to maintaining a uniform distribution of dry sand in the sand trough 300.

[0056] In some embodiments, the first drive groove 620 includes a first sub-straight groove 621, a second sub-straight groove 622, and a first inclined groove 623. The length directions of the first sub-straight groove 621 and the second sub-straight groove 622 are both parallel to the length direction of the sand trough 300. The first sub-straight groove 621 and the second sub-straight groove 622 are respectively connected to the two ends of the first inclined groove 623, and the first sub-straight groove 621 is closer to the opening 110 and the central axis of the sand trough 300 than the second sub-straight groove 622. The second drive groove 720 includes a third sub-straight groove 721, a fourth sub-straight groove 722, and a second inclined groove 723. The length directions of the third sub-straight groove 721 and the fourth sub-straight groove 722 are parallel to the length direction of the sand groove 300. The third sub-straight groove 721 and the fourth sub-straight groove 722 are respectively connected to the two ends of the second inclined groove 723. The third sub-straight groove 721 is closer to the opening 110 and the central axis of the sand groove 300 than the fourth sub-straight groove 722.

[0057] The first sub-straight groove 621 and the third sub-straight groove 721 are closer to the central axis of the sand trough 300 within the corresponding first drive groove 620 and second drive groove 720. This allows the first drive block 630 to move first along the first sub-straight groove 621, then along the first inclined groove 623, and finally along the second sub-straight groove 622 as the first drive rod 610 penetrates the corresponding first push hole 511.

[0058] When the first drive block 630 moves along the first inclined groove 623, it can apply pressure to the side wall of the first inclined groove 623, thereby pushing the first mounting plate 510 to move perpendicular to its length. Furthermore, since the first sub-straight groove 621 is closer to the central axis of the sand trough 300 than the second sub-straight groove 622, when the first drive block 630 moves along the first inclined groove 623 with the first drive rod 610, it can push the first mounting plate 510 to move closer to the central axis of the sand trough 300. When the two first drive rods 610 in the sand trough 300 move simultaneously, they can push the two first mounting plates 510 in the sand trough 300 closer to each other. The first mounting plates 510 drive the first push blocks 520 to move synchronously. When the first push blocks 520 are close to each other, they can push the dry sand in the sand trough 300 to gather and rise towards the direction close to the central axis of the sand trough 300. The dry sand that rises can cover the bottom of the sand cutter 400, thereby achieving a seal on the sand cutter 400, and thus achieving a seal on the furnace body 100 of the present invention. Similarly, when the second drive block 730 moves along the second inclined groove 723 with the second drive rod 710, the second push blocks 540 on both sides of the sand trough 300 can move closer to each other, which can also push the dry sand in the sand trough 300 to gather and rise, which can further improve the sealing of the dry sand to the sand knife 400 and the furnace body 100.

[0059] Meanwhile, in this embodiment, the lengths of the first sub-straight groove 621, the second sub-straight groove 622, the third sub-straight groove 721, the fourth sub-straight groove 722, the first inclined groove 623, and the second inclined groove 723 in the direction parallel to the length of the sand trough 300 are limited. That is, the projected length of the third sub-straight groove 721 on the central axis of the sand trough 300 is equal to the sum of the projected lengths of the first sub-straight groove 621 and the first inclined groove 623, and the projected length of the second sub-straight groove 622 on the central axis of the sand trough 300 is equal to the sum of the projected lengths of the fourth sub-straight groove 722 and the second inclined groove 723.

[0060] The length restrictions of the first sub-straight groove 621, the second sub-straight groove 622, the third sub-straight groove 721, the fourth sub-straight groove 722, the first inclined groove 623, and the second inclined groove 723 along the length direction of the sand trough 300 ensure that when the first drive rod 610 and the second drive rod 710 move simultaneously into their respective first push holes 511 and 531, the first drive block 630 on the first drive rod 610 can move first within the first inclined groove 623, thereby causing the first push blocks 520 to move closer to each other. When the first drive block 630 enters the second sub-straight groove 622, the second drive block 730 on the second drive rod 710 just enters the second inclined groove 723. Then, the first push blocks 520 no longer move closer to each other, while the second push blocks 540 begin to move closer to each other, thereby further pushing the dry sand in the sand trough 300 higher, thus providing a better seal for the sand cutter 400 and the furnace body 100.

[0061] In this embodiment, when the trolley 200 enters the furnace body 100, the sealing door 210 moves synchronously. The sealing door 210 pushes the first drive rod 610 and the second drive rod 710 to move in the direction of penetrating the first push hole 511 and the second push hole 531. At this time, the elastic telescopic rods in the first push hole 511 and the second push hole 531 are compressed by force. When the sealing door 210 completely blocks the opening 110, the first drive block 630 and the second drive block 730 just abut against the groove wall of the second sub-straight groove 622 and the fourth sub-straight groove 722 on the side away from the opening 110, and the first drive rod 610 and the second drive rod 710 are compressed into the corresponding first limiting hole 301 and the second limiting hole 302.

[0062] After the furnace body 100 completes the heat treatment of the workpiece, the trolley 200 is pulled out of the furnace body 100, and the sealing door 210 is detached from the furnace body 100. When the sealing door 210 detaches from the furnace body 100, under the restoring force of the elastic telescopic rod, both the first drive rod 610 and the second drive rod 710 can return to their initial state, that is, extend to the outside of the sand trough 300. When the first drive rod 610 and the second drive rod 710 return to their initial state, the first mounting plate 510 and the second mounting plate 530 also return to their original state. Due to the good fluidity of dry sand, the dry sand in the sand trough 300 will also return to its original state as much as possible, so that the dry sand in the sand trough 300 is evenly distributed.

[0063] Furthermore, in this embodiment, multiple first drive slots 620 and second drive slots 720 can be formed on the corresponding first mounting plate 510 and second mounting plate 530. These multiple first drive slots 620 and multiple second drive slots 720 are evenly arranged along the length direction of the corresponding first mounting plate 510 and the length direction of the corresponding second mounting plate 530. Multiple first drive blocks 630 and multiple second drive blocks 730 are also provided on the corresponding first drive rods 610 and second drive rods 710. The multiple first drive blocks 630 are respectively located within the multiple first drive slots 620, and the multiple second drive blocks 730 are respectively located within the multiple second drive slots 720. Furthermore, the positions of the multiple first drive blocks 630 and the multiple second drive blocks 730 within the multiple first drive slots 620 are completely consistent.

[0064] The arrangement of multiple first drive blocks 630 and second drive blocks 730 can reduce the excessive stress on the first drive block 630 and the second drive block 730 caused by the corresponding first drive groove 620 and second drive groove 720 walls when only one first drive block 630 and one second drive block 730 are provided. This can lead to increased wear on the first drive block 630 and the second drive block 730, thereby reducing their service life and extending the service life of the present invention.

[0065] Furthermore, both the first propulsion block 520 and the second propulsion block 540 can be isosceles trapezoidal blocks. The large end face of the first propulsion block 520 is fixed to the first mounting plate 510, and the lower end face of the second propulsion block 540 is inserted into the gap between the first propulsion blocks 520 and abuts against the first mounting plate 510. The two sides of the second propulsion block 540 parallel to the length of the sand trough 300 respectively contact the sides of the two corresponding first propulsion blocks 520. When the first propulsion block 520 and the second propulsion block 540 move in a staggered manner perpendicular to the length of the sand trough 300, the side of the second propulsion block 540 in this direction is always in contact with the corresponding side of the first propulsion block 520, thereby achieving the sealing of the gap between the first propulsion block 520 and the second propulsion block 540 by the first propulsion block 520.

[0066] In this embodiment, when the first drive rod 610 and the second drive rod 710 are simultaneously pushed by the sealing door 210, the first pusher block 520 in the sand trough 300 first approaches each other and pushes the dry sand in the sand trough 300 to gather and rise. Then the second pusher block 540 approaches each other again and pushes the dry sand in the sand trough 300 to gather and rise again. Since the side of the second pusher block 540 perpendicular to the length of the sand trough 300 is inclined, the inclined surface on the second pusher block 540 can also apply a certain pressure to the dry sand when it approaches the central axis of the sand trough 300. This pressure can make the dry sand more compact. The more compacted dry sand has a better sealing effect on the sand knife 400 and the furnace body 100. At the same time, this pressure can also squeeze out any possible dry sand agglomerates, so that the dry sand is evenly distributed in the sand trough 300.

[0067] Furthermore, an air jet can be installed at the bottom of the sand trough 300. The air jet can accelerate the flow of dry sand in the sand trough 300 through external air jet equipment, so that the dry sand in the sand trough 300 has better fluidity and is more convenient to return to its original state after being gathered and raised.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bogie type forging furnace for manufacturing an alloy forge piece, characterized by, include: The furnace body has a transport hole at the bottom and an opening at one end that communicates with the transport hole. The trolley is movable and located below the furnace body. The trolley is used to transport the workpiece to be processed from the opening side of the furnace body along the transport hole into the furnace body. The trolley is equipped with a sealing door for sealing the opening. The sand trough is located on both sides of the furnace body cavity. The end of the sand trough near the opening has a pull-out hole, and the sand trough is filled with dry sand. The sanding cutter is mounted on the trolley and corresponds to the sanding trough. It can be inserted into the corresponding sanding trough through the insertion hole. The propulsion structure is movably installed in the sand trough, and there are two sets in each sand trough. The two sets of propulsion structures are symmetrically arranged about the central axis of the sand trough. When the two sets of propulsion structures approach or move away from each other, the dry sand in the sand trough gathers and rises or disperses and falls. The drive mechanism is configured to provide synchronous approach or synchronous departure power to the propulsion structure within the sand trough.

2. The trolley-type forging furnace for manufacturing alloy forgings according to claim 1, characterized in that: The propulsion structure is a push rod, the length of which is parallel to the length of the sand trough. The push rod is slidably disposed at the bottom of the sand trough, and the driving mechanism is disposed between the push rod and the sand trough.

3. The trolley-type forging furnace for manufacturing alloy forgings according to claim 1, characterized in that: The propulsion structure includes a first mounting plate, a first propulsion block, a second mounting plate, and a second propulsion block. The driving mechanism includes a first driving structure and a second driving structure. The length directions of the first mounting plate and the second mounting plate are parallel to the sand trough. The first mounting plate and the second mounting plate are respectively disposed between the two end faces of the sand trough through the first driving structure and the second driving structure. The first driving structure is used to provide the first mounting plate in the sand trough with the power to move closer to or further away from each other, and the second driving structure is used to provide the second mounting plate in the sand trough with the power to move closer to or further away from each other. The first mounting plate is located at the bottom of the sand trough. Multiple first and second propulsion blocks are provided. Multiple first propulsion blocks are all set on the first mounting plate and are evenly distributed at equal intervals along the length of the first mounting plate. The second mounting plate is located above the first propulsion blocks. Multiple second propulsion blocks are all set on the side of the second mounting plate facing the first propulsion blocks and are respectively inserted into multiple gaps of the multiple first propulsion blocks. The second propulsion blocks are used to seal the gaps between the first propulsion blocks.

4. The trolley-type forging furnace for manufacturing alloy forgings according to claim 3, characterized in that: The first mounting plate has a first push hole, the second mounting plate has a second push hole, and the sand groove has a first limiting hole and a second limiting hole on one side wall of the opening that are corresponding to and communicate with the first push hole and the second push hole. The first driving structure includes a first driving rod, a first driving groove, and a first driving block. The first driving rod passes through the first limiting hole and its corresponding first pushing hole. One end of the first driving rod extends to the outside of the sand groove and is configured to be able to penetrate the first pushing hole under the push of the sealing door. The other end is provided with a first elastic element between itself and the hole wall of the first pushing hole away from the opening. The first elastic element is configured to make the first driving rod tend to extend out of the first pushing hole. The first driving groove is opened on the hole wall of the first pushing hole. The first driving block is fixed on the first driving rod. The first driving block is inserted into the first driving groove and abuts against the groove wall of the first driving groove near the opening. When the sealing door pushes the first driving rod into the first pushing hole, the first driving block can push the first mounting blocks closer to each other through the first driving groove. The second driving structure includes a second driving rod, a second driving groove, and a second driving block. The second driving rod passes through the second limiting hole and its corresponding second pushing hole. One end of the second driving rod extends to the outside of the sand groove and is configured to be able to penetrate the second pushing hole under the push of the sealing door. The other end is provided with a second elastic member between itself and the hole wall of the second pushing hole away from the opening. The second elastic member is configured to make the second driving rod tend to extend out of the second pushing hole. The second driving groove is opened on the hole wall of the second pushing hole. The second driving block is fixed on the second driving rod. The second driving block is inserted into the second driving groove and abuts against the groove wall of the second driving groove near the opening. When the sealing door pushes the second driving rod into the second pushing hole, the second driving block can push the second mounting blocks closer to each other through the second driving groove.

5. The trolley-type forging furnace for manufacturing alloy forgings according to claim 4, characterized in that: Both the first elastic element and the second elastic element are elastic telescopic rods.

6. The trolley-type forging furnace for manufacturing alloy forgings according to claim 4, characterized in that: The first driving groove includes a first sub-straight groove, a second sub-straight groove, and a first inclined groove. The length directions of the first sub-straight groove and the second sub-straight groove are both parallel to the length direction of the sand groove. The first sub-straight groove and the second sub-straight groove are respectively connected to the two ends of the first inclined groove. The first sub-straight groove is close to the opening and the central axis of the sand groove. The second drive groove includes a third sub-straight groove, a fourth sub-straight groove, and a second inclined groove. The length directions of the third sub-straight groove and the fourth sub-straight groove are parallel to the length direction of the sand groove. The third sub-straight groove and the fourth sub-straight groove are respectively connected to the two ends of the second inclined groove. The third sub-straight groove is close to the opening and the central axis of the sand groove. The projected length of the third sub-straight groove on the central axis of the sand trough is equal to the sum of the projected lengths of the first sub-straight groove and the first inclined groove; the projected length of the second sub-straight groove on the central axis of the sand trough is equal to the sum of the projected lengths of the fourth sub-straight groove and the second inclined groove.

7. A trolley-type forging furnace for manufacturing alloy forgings according to claim 6, characterized in that: Both the first drive slot and the second drive slot are provided in multiples, with the multiple first drive slots being evenly distributed along the length direction of the first push hole, and the multiple second drive slots being evenly distributed along the length direction of the second push hole; Multiple first drive blocks and multiple second drive blocks are provided. Multiple first drive blocks are fixed on the first drive rod and inserted into multiple first drive slots respectively. Multiple second drive blocks are fixed on the second drive rod and inserted into multiple second drive slots respectively.

8. The trolley-type forging furnace for manufacturing alloy forgings according to claim 4, characterized in that: Both the first and second propulsion blocks are isosceles trapezoidal blocks. The large end face of the first propulsion block is fixed on the first mounting plate, and the small end face of the second propulsion block is inserted into the gap between the first propulsion blocks and abuts against the first mounting plate. The second propulsion block seals the gap between the first propulsion blocks.

9. A trolley-type forging furnace for manufacturing alloy forgings according to claim 1, characterized in that: Both the furnace body and the sealing door are lined with furnace lining.

10. A trolley-type forging furnace for manufacturing alloy forgings according to claim 1, characterized in that: The furnace body is provided with a track for the trolley to travel on.

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