Forging heating furnace
By using components such as gantry, electric hoist and cylinder in the forging heating furnace, the gap between the lifting door and the furnace port is ensured, which solves the problems of poor sealing performance and damage to the refractory cotton, extends the service life of the refractory cotton, and saves the Artificial and energy.
Patent Information
- Application Number
- CN202420794721.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-17
AI Technical Summary
During forging, the sealing performance between the lift door and the furnace port is poor, resulting in heat loss. The refractory cotton is easily damaged and dropped, and needs to be replaced frequently, wasting labor and energy.
A forged heating furnace is designed, using components such as gantry, electric hoist, push rod and cylinder to ensure that the lifting door maintains a gap between the furnace port when opening and closing, avoiding the refractory cotton from being subjected to friction, and is controlled by the piston rod of the cylinder. The tightening and pushing of the lifting door extends the service life of the refractory cotton.
It effectively reduces heat loss, extends the service life of refractory cotton, reduces replacement frequency, and saves labor costs.
Smart Images
Figure CN222288701U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of forging equipment, in particular to a forging heating furnace. Background Art
[0002] In the forging process, the metal billet needs to be heated to a certain temperature in a heating furnace to soften it before forging. The patent with application number 202121174874.0 discloses an industrial forging furnace for forging parts, which includes a combustion box, a lifting door is provided at the front opening of the box, a door frame is provided on the outside of the lifting door, a slide rail is provided on the door frame, the bottom of the slide rail is bent toward one side of the box to form a clamping guide portion, rollers rolling in the slide rail are respectively provided on both sides of the bottom of the lifting door, and a lifting screw drive pair is provided at the top of the lifting door. The lifting door and the screw drive pair are connected together by a hinge plate with hinge shafts at both ends. A clamping guide portion is provided in the slide rail of the lifting door, and a relative trapezoidal block is provided at the top of the lifting door. The screw pushes the hinge plate so that the lower trapezoidal block is squeezed by the upper trapezoidal block along the inclined surface of the trapezoid, driving the lifting door to close. It is pressed tightly against the box body to improve the sealing performance. In actual use, since the lifting door is pressed obliquely downward and inwardly against the furnace mouth, the refractory wool arranged around the furnace mouth or on the inside of the lifting door is subjected to the pressing force and vertical friction from the beginning of being pressed to before it is completely pressed (or from the beginning of being released to before it is completely released), and the strength of the refractory wool is relatively low. When the lifting door is opened and closed, the refractory wool arranged around the furnace mouth or on the inside of the lifting door is prone to falling off some small pieces. After the furnace door is lifted and lowered dozens of times, the sealing between the lifting door and the furnace mouth becomes poor due to excessive falling of refractory wool, resulting in a large amount of heat being lost from the gap between the lifting door and the furnace mouth, wasting energy. At this time, the refractory wool arranged around the furnace mouth or on the inside of the lifting door must be replaced, wasting labor. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a forging heating furnace in view of the above-mentioned technical deficiencies.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a forging heating furnace, comprising a box body, a lifting door is arranged at the furnace mouth of the box body, a gantry is arranged on the outer side of one end of the box body where the lifting door is arranged, slings are arranged on both sides of the top of the lifting door, the two slings are connected to the lifting device, and when the lifting door is lifted, there is a gap between it and the furnace mouth, pushing rods are arranged on the top and bottom of both sides of the front side of the lifting door, a connecting plate is arranged on the outer end of the pushing rod, and a card block extending downward is arranged on the end of the connecting plate away from the pushing rod, a cylinder is arranged on the outer side of the gantry, the piston rod of the cylinder is connected to a hook plate, and the top surface of the hook plate is provided with a card slot, when the card block is located in the card slot, the piston rod of the cylinder is retracted to press the lifting door tightly at the furnace mouth.
[0005] To further optimize the technical solution, the lifting device includes an electric hoist, and each sling on the top of the lifting door penetrates the gantry upwards and then passes around a corresponding fixed pulley and extends to the same side, and then passes around a fixed pulley arranged on one side of the gantry and extends downward, and the ends of the two slings away from the lifting door are simultaneously connected to the steel wire rope of the electric hoist.
[0006] To further optimize the technical solution, the front side of the gantry is also provided with guide plates corresponding to the four push rods respectively, and the guide plates include horizontal plates. When the push rods contact the top surface of the horizontal plates, the lifting door drops into place.
[0007] To further optimize the technical solution, an inclined plate is provided at one end of the horizontal plate away from the gantry, and the inner side of the inclined plate is inclined backward in a direction from top to bottom.
[0008] To further optimize the technical solution, a pad is further provided on the front side of the gantry, and when the rear side of the push rod contacts the pad, the rear side of the lifting door cannot contact the furnace opening.
[0009] Compared with the prior art, the utility model has the following advantages: there is a gap between the lifting door and the furnace mouth when it is lifted, so that when the lifting door rises and falls, it does not contact the refractory wool arranged around the furnace mouth, and when the card block is inserted into the card slot, the cylinder can press the lifting door against the furnace mouth or push it away from the furnace mouth, so that when the lifting door is opened or closed, the refractory wool arranged around the furnace mouth or on the inside of the lifting door will not be subjected to vertical friction, and it is not easy to be damaged and fall off when the lifting door is opened and closed, so the service life is greatly extended, the interval for replacing the refractory wool is greatly increased, and labor is saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of a forging heating furnace.
[0011] Figure 2This is a schematic diagram of the structure of a forging heating furnace from another direction.
[0012] Figure 3 for Figure 2 Magnified view of point I in the middle.
[0013] In the figure: 1. box body; 2. gantry; 3. lifting door; 4. electric hoist; 5. guide plate; 51. inclined plate; 52. horizontal plate; 6. push rod; 61. connecting plate; 62. block; 7. cylinder; 71. hook plate; 8. pad. DETAILED DESCRIPTION
[0014] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0015] Specific implementation method: Combination Figure 1-3 As shown, a forging heating furnace comprises a box body 1, a lifting door 3 is arranged at the furnace mouth of the box body 1, a gantry 2 is arranged on the outer side of one end of the box body 1 where the lifting door 3 is arranged, and slings are arranged on both sides of the top of the lifting door 3. The two slings are connected to a lifting device, and the lifting device can make the two slings rise and fall synchronously to keep the heights of the left and right sides of the lifting door 3 consistent. When the lifting door 3 is lifted, there is a gap between it and the furnace mouth, that is, only under the action of the slings, the lifting door 3 is lifted. Figure 2 There is a gap between the lifting door 3 and the furnace mouth in the left and right directions, so that the refractory cotton arranged around the furnace mouth (or the refractory cotton arranged on the lifting door 3 close to the side of the box body 1, usually only one of the two positions is provided with refractory cotton) will not contact the lifting door 3 that is rising or falling. Push rods 6 are arranged on the top and bottom of both sides of the front side of the lifting door 3, and a connecting plate 61 is arranged on the outer end of the pushing rod 6, and a block 62 extending downward is arranged on the end of the connecting plate 61 away from the pushing rod 6. A cylinder 7 is arranged on the outer side of the gantry 2, and the piston rod of the cylinder 7 is connected to a hook plate 71, and a slot is arranged on the top surface of the hook plate 71. When the block 62 is located in the slot, the piston rod of the cylinder 7 is retracted to press the lifting door 3 against the furnace mouth, and the piston rod of the cylinder 7 is extended to push the lifting door 3 away from the furnace mouth. When in use, combined with Figure 2As shown, when the lifting door 3 falls into place, the card block 62 is located in the card slot, and then the piston rod of the control cylinder 7 is retracted to press the lifting door 3 against the furnace mouth. When opening the lifting door 3, the piston rod of the control cylinder 7 is first extended to push the lifting door 3 away from the furnace mouth, and then the lifting door 3 is lifted. Since the refractory cotton arranged around the furnace mouth will not be subjected to the vertical friction force (if the refractory cotton is arranged on the side of the lifting door 3 close to the box body 1, the refractory cotton will not be subjected to the vertical friction force), it is not easy to be damaged and fall off when opening and closing the lifting door 3, the service life is greatly extended, the interval for replacing the refractory cotton is greatly increased, and labor is saved.
[0016] Furthermore, the lifting device includes an electric hoist 4. Each sling on the top of the lifting door 3 penetrates the gantry 2 upwards and then passes around a corresponding fixed pulley and then extends to the same side. In order to prevent the two slings from interfering with each other after extending to the same side in the same straight line, the lifting points of the two slings are respectively located on both sides of the center of gravity of the lifting door 3 ( Figure 2 The two slings are arranged on the left and right sides of the gantry 2 and are symmetrical about the center of gravity, and then go around the fixed pulley (two fixed pulleys can be arranged there, or one fixed pulley can be arranged but with two pulley grooves thereon) arranged on one side of the gantry 2 and extend downward, and the ends of the two slings away from the lifting door 3 are simultaneously connected to the steel wire rope of the electric hoist 4. In this way, the synchronization of the two slings is better.
[0017] Furthermore, the front side of the gantry 2 is also provided with guide plates 5 corresponding to the four push rods 6, and the guide plates 5 include horizontal plates 52. When the push rods 6 contact the top surface of the horizontal plates 52, the lifting door 3 is lowered into place, and at this time, the block 62 has been inserted into the slot and its bottom surface has not yet contacted the bottom of the slot. The horizontal plates 52 can bear the weight of the lifting door 3, and the cylinder 7 is not easily damaged.
[0018] Furthermore, an inclined plate 51 is provided at one end of the horizontal plate 52 away from the gantry 2, and the inner side of the inclined plate 51 is inclined backward from top to bottom. It is necessary to ensure that the push rod 6 has contacted the inclined plate 51 before falling onto the horizontal plate 52. The inclined plate 51 can play a positioning role. After the push rod 6 slides down along the inclined plate 51 and falls onto the horizontal plate 52 (at this time there is still a gap between the lifting door 3 and the furnace mouth), the block 62 is just located in the slot, preventing the block 62 from being unable to be inserted into the slot due to the shaking of the lifting door 3 when it is descending.
[0019] Furthermore, a pad 8 is provided at the front side of the gantry 2. When the rear side of the push rod 6 contacts the pad 8, the rear side of the lift door 3 cannot contact the furnace opening. The pad 8 can prevent the lift door 3 from contacting the refractory wool arranged around the furnace opening due to the shaking of the lift door 3 during lifting, thereby preventing the refractory wool from being damaged.
[0020] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A forging heating furnace, comprising a box (1), wherein a lifting door (3) is provided at a furnace opening of the box (1), characterized in that: The box body (1) is provided with a lifting door (3) at one end thereof, and a gantry (2) is provided on the outer side thereof. Lifting ropes are provided on both sides of the top of the lifting door (3), and the two lifting ropes are connected to the lifting device. When the lifting door (3) is lifted, there is a gap between it and the furnace opening. Push rods (6) are provided on the top and bottom of both sides of the front side of the lifting door (3). A connecting plate (61) is provided at the outer end of the pushing rod (6), and a clamping block (62) extending downward is provided at one end of the connecting plate (61) away from the pushing rod (6). A cylinder (7) is provided on the outer side of the gantry (2). The piston rod of the cylinder (7) is connected to a hook plate (71), and a clamping groove is provided on the top surface of the hook plate (71). When the clamping block (62) is located in the clamping groove, the piston rod of the cylinder (7) is retracted to press the lifting door (3) against the furnace opening.
2. A forging heating furnace according to claim 1, characterized in that: The lifting device comprises an electric hoist (4), each sling on the top of the lifting door (3) penetrates upward through the gantry (2), then passes around a corresponding fixed pulley and extends to the same side, then passes around a fixed pulley arranged on one side of the gantry (2) and extends downward, and the ends of the two slings away from the lifting door (3) are simultaneously connected to the steel wire rope of the electric hoist (4).
3. A forging heating furnace according to claim 1, characterized in that: The front side of the gantry (2) is also provided with guide plates (5) corresponding to the four push rods (6) respectively, and the guide plates (5) include a horizontal plate (52). When the push rods (6) contact the top surface of the horizontal plate (52), the lifting door (3) descends into place.
4. A forging heating furnace according to claim 3, characterized in that: An inclined plate (51) is provided at one end of the horizontal plate (52) away from the gantry (2), and the inner side of the inclined plate (51) is inclined backward in a direction from top to bottom.
5. A forging heating furnace according to any one of claims 1 to 4, characterized in that: A pad (8) is also provided on the front side of the gantry (2), and when the rear side of the push rod (6) contacts the pad (8), the rear side of the lifting door (3) cannot contact the furnace opening.