Slow cooling furnace for wheels and using method of slow cooling furnace

Abstract

The invention relates to the technical field of steel manufacturing, in particular to a slow cooling furnace for wheels and a using method thereof.The slow cooling furnace comprises a slow cooling furnace body, and a furnace cover is arranged on the slow cooling furnace body; the furnace cover is connected with the slow cooling furnace body through a cover opening mechanism; the cover opening mechanism comprises driving mechanisms distributed on the two sides of the furnace cover. The driving mechanism comprises a connecting rod mechanism connected to the slow cooling furnace body and a driving part used for driving the connecting rod mechanism to rotate. According to the slow cooling furnace structure, through the arrangement of the cover opening mechanism, opening and closing of the furnace cover in the slow cooling furnace are facilitated, the situation that an existing cover opening machine is matched with a special traveling crane to open the slow cooling furnace cover can be replaced, the automation degree of a production line is improved, and the operation efficiency is greatly improved; meanwhile, the automatic uncovering slow cooling furnace avoids the situation that a furnace body is damaged due to inaccurate positioning caused by manual operation of a travelling crane, and the maintenance cost is reduced; and the slow cooling requirements of stacked wheels of different specifications can be met, and universality is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of steel manufacturing, in particular to a slow cooling furnace for wheels and a use method thereof. Background Art

[0002] During the production process of high-speed rail wheels, a post-rolling slow cooling process is required to slow down the temperature distribution gradient inside the billet after rolling, allowing it to cool naturally and slowly. The billet can only be taken out of the furnace and enter the next process when the cooling time reaches the process requirements.

[0003] The existing slow cooling furnace for high-speed railway wheels generally adopts a cover opening machine in conjunction with a special crane to control the opening and closing of the slow cooling furnace cover. A dedicated person is required to control the crane, and the degree of automation is low. Manual operation has limitations, and the positioning is not accurate enough, which can easily damage the slow cooling furnace body during operation, affecting the service life of the furnace body and increasing maintenance costs. Manual operation in conjunction with the furnace entry and exit operations cannot accurately grasp the production rhythm, resulting in low production efficiency.

[0004] The existing patent 201120189333.5 - A slow cooling barrel support ring for casting railway wheels does not clearly disclose the technical content for solving the above technical problems.

[0005] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing slow cooling furnace. Summary of the invention

[0006] The object of the present invention is to provide a slow cooling furnace for wheels, which is convenient for controlling the opening and closing of the furnace cover in the slow cooling furnace.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A slow cooling furnace for a wheel, comprising a slow cooling furnace body, wherein a furnace cover is provided on the slow cooling furnace body;

[0009] The furnace cover is connected to the slow cooling furnace body through a cover opening mechanism;

[0010] The cover opening mechanism includes driving mechanisms distributed on both sides of the furnace cover;

[0011] The driving mechanism comprises a connecting rod mechanism connected to the slow cooling furnace body and a driving component for driving the connecting rod mechanism to rotate.

[0012] The connecting rod mechanism includes two swing rods that are spaced and distributed in parallel. One end of each of the two swing rods is hinged to the slow cooling furnace body and the other end is hinged to the furnace cover. The two swing rods are connected by a bridging rod; both ends of the bridging rod are hinged to the swing rods respectively.

[0013] The driving component comprises a driving cylinder, one end of which is hinged on the slow cooling furnace body, and the other end of which is hinged on the swing rod.

[0014] The slow cooling furnace body is also provided with a supporting mechanism, and the supporting mechanism comprises a supporting frame on the slow cooling furnace body, and a supporting platform is provided at one end of the supporting frame away from the slow cooling furnace body.

[0015] The slow cooling furnace body is provided with a temperature measuring mechanism, and the temperature measuring mechanism comprises a mounting hole arranged on the slow cooling furnace body, and a thermocouple is arranged in the mounting hole.

[0016] The slow cooling furnace body comprises a bottom plate, a lateral ring plate is arranged around the bottom plate; a bottom refractory brick layer is arranged on the bottom plate; and a side wall is arranged on the inner wall of the lateral ring plate.

[0017] A partition plate is arranged in the slow cooling furnace body.

[0018] A saddle is arranged in the slow cooling furnace body; the saddle comprises a support base; and a lateral support is respectively arranged on two opposite sides of the support base.

[0019] The saddle is installed on the bottom refractory brick layer; the lateral support includes a plurality of single supports, and each of the single supports is in the shape of a Chinese character U.S.

[0020] A method for using a slow cooling furnace for a wheel, the method comprising the following steps:

[0021] Step 1: The stack of wheels is lifted to the top of the slow cooling furnace by the transfer hoist. The slow cooling furnace receives the opening command, and the cover opening mechanism is activated to open the furnace cover. The transfer hoist transfers the stack of wheels to the saddle in the slow cooling furnace and places them. The transfer hoist exits the slow cooling furnace and moves to a safe position. The slow cooling furnace receives the closing command, and the cover opening mechanism is activated to close the furnace cover.

[0022] Step 2: After the slow cooling of the stacked wheels is completed, the transfer hoist is unloaded and placed directly above the slow cooling furnace. The slow cooling furnace receives the command to open the cover, and the cover opening mechanism operates to open the furnace cover. The transfer hoist transfers the stacked wheels and lifts them off the saddle in the slow cooling furnace. The transfer hoist loads the stacked wheels and exits the slow cooling furnace to a safe position. The slow cooling furnace receives the command to close, and the cover opening mechanism operates to close the furnace cover.

[0023] The advantages of the present invention are:

[0024] The invention discloses a slow cooling furnace for a wheel and a use method thereof.

[0025] The slow cooling furnace structure disclosed in the present invention facilitates the opening and closing of the furnace cover in the slow cooling furnace by setting a cover opening mechanism, and can replace the existing cover opening machine in conjunction with a special crane to open the slow cooling furnace cover, thereby improving the degree of automation of the production line and greatly improving the operating efficiency; at the same time, the automatic cover opening slow cooling furnace avoids damage to the furnace body caused by inaccurate positioning of the manually operated crane, thereby reducing maintenance costs; it can meet the slow cooling needs of stacked wheels of different specifications and has universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0027] Figure 1 It is a schematic diagram of the overall structure of the automatic cover-opening slow cooling furnace after heat treatment of stacked wheels of the present invention.

[0028] Figure 2 The figure is a schematic diagram of the action of the cover-opening mechanism of the automatic cover-opening slow cooling furnace of the present invention.

[0029] Figure 3 It is a structural schematic diagram of the automatic cover-opening slow cooling furnace body of the present invention.

[0030] Figure 4 It is a schematic diagram of the slow cooling furnace saddle of the present invention.

[0031] The marks in the above figure are:

[0032] 1-furnace cover; 2-slow cooling furnace body; 3-cover opening mechanism; 4-support platform; 5-saddle; 6-bottom refractory brick layer; 7-side wall; 8-lateral ring plate. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0034] A slow cooling furnace for wheels comprises a slow cooling furnace body 2, on which a furnace cover 1 is provided; the furnace cover 1 is connected to the slow cooling furnace body 2 via a cover opening mechanism 3; the cover opening mechanism 3 comprises a driving mechanism 3-1 distributed on both sides of the furnace cover 1; the slow cooling furnace structure disclosed in the present invention facilitates the opening and closing of the furnace cover 1 in the slow cooling furnace through the setting of the cover opening mechanism 3, and can replace the existing cover opening machine to cooperate with a special crane to open the slow cooling furnace cover 1, thereby improving the degree of automation of the production line and greatly improving the operating efficiency; at the same time, the automatic cover opening slow cooling furnace avoids the damage to the furnace body caused by inaccurate positioning of the manually operated crane, thereby reducing maintenance costs; it can meet the slow cooling needs of stacked wheels of different specifications and has universality.

[0035] The wheel slow cooling furnace disclosed in the present invention is mainly used for the slow cooling process of high-speed railway wheels after rolling, which slows down the temperature distribution gradient inside the rolled steel billet, allowing it to cool naturally and slowly. The steel billet can be taken out of the furnace and enter the next process only when the cooling time reaches the process requirements.

[0036] The wheel slow cooling furnace disclosed in the present invention mainly comprises a slow cooling furnace body 2, on which a furnace cover 1 is arranged; the slow cooling furnace body 2 is hollow inside, which facilitates the arrangement and placement of the wheel to be cooled; and the furnace cover 1 plays a good covering and sealing role.

[0037] In addition, in the present invention, the furnace cover 1 is connected to the slow cooling furnace body 2 via a cover opening mechanism 3; the provision of the cover opening mechanism 3 facilitates the subsequent adjustment of the position of the furnace cover 1 as required, and facilitates the opening and closing operations of the furnace cover 1.

[0038] In the present invention, the cover opening mechanism 3 includes driving mechanisms 3-1 distributed on both sides of the furnace cover 1; the two driving mechanisms 3-1 mainly support the two sides of the furnace cover 1, and at the same time, the two driving mechanisms 3-1 cooperate to push, so that the furnace cover 1 can be opened and closed better.

[0039] The two driving mechanisms 3 - 1 are used in coordination to ensure the smooth operation of the furnace cover 1 .

[0040] In the present invention, the driving mechanism 3-1 includes a connecting rod mechanism connected to the slow cooling furnace body 2 and a driving component 35 for driving the connecting rod mechanism to rotate; the connecting rod mechanism mainly acts as a rotating rod structure, and the driving component 35 is mainly used to control the rotation of the connecting rod mechanism, thereby realizing the rotation opening and closing operation of the furnace cover 1.

[0041] Furthermore, the connecting rod mechanism in the present invention includes two swing rods 31 that are spaced apart and distributed in parallel, and the two swing rods 31 are respectively hinged to the slow cooling furnace body 2 at one end and hinged to the furnace cover 1 at the other end, and the two swing rods 31 are connected by a bridging rod 32; the two ends of the bridging rod 32 are respectively hinged to the swing rods 31; based on the above design, the mutual cooperation of the two swing rods 31 facilitates the furnace cover 1 to be in a horizontal state for a long time during the rotation process, and facilitates the furnace cover 1 to be arranged on the support platform 4 after opening, and to be placed on the slow cooling furnace body 2 when closed.

[0042] Furthermore, in the present invention, the driving component 35 includes a driving cylinder, one end of which is hinged on the slow cooling furnace body 2, and the other end is hinged on the swing rod 31; the driving cylinder can be a hydraulic cylinder. Of course, the driving component 35 can also use other driving structures. In essence, the driving structure that can realize the swing of the connecting rod mechanism is applicable.

[0043] Furthermore, a supporting mechanism is also provided on the slow cooling furnace body 2 in the present invention, and the supporting mechanism plays a good role of the longitudinal support frame 33, which is convenient for subsequent use. When the furnace cover 1 is opened, the furnace cover 1 can prevent the connecting rod mechanism from being deformed on the supporting mechanism due to being in a constant stress state.

[0044] Specifically, the supporting mechanism described in the present invention includes a supporting frame 33 on the slow cooling furnace body 2, and a supporting platform 4 is provided at one end of the supporting frame 33 away from the slow cooling furnace body 2; the supporting frame 33 is horizontally arranged on the slow cooling furnace body 2, and the supporting platform 4 is arranged on the supporting frame 33, and the upper end surface of the supporting platform 4 is a plane. Subsequently, after the furnace cover 1 is opened, the furnace cover 1 can be placed flat on the upper end surface of the supporting platform 4, so that the supporting platform 4 is higher than the supporting frame 33 of the furnace cover 1.

[0045] Furthermore, in the present invention, a temperature measuring mechanism is provided on the slow cooling furnace body 2, and the temperature measuring mechanism includes a mounting hole arranged on the slow cooling furnace body 2, and a thermocouple is arranged in the mounting hole; based on the above design, the present invention facilitates the installation of the thermocouple, and also facilitates the subsequent detection of the temperature in the slow cooling furnace.

[0046] Furthermore, in the present invention, the slow cooling furnace body 2 includes a bottom plate 81, and a lateral ring plate 8 is provided around the bottom plate 81; based on this, the slow cooling furnace body 2 forms a box body structure with an upper end being specifically opened, and a furnace cover 1 for sealing is provided at the upper end of the box body structure; at the same time, in the present invention, a bottom refractory brick layer 6 is provided on the bottom plate 81; a side wall 7 is provided on the inner wall of the lateral ring plate 8; the setting of the bottom refractory brick layer 6 and the side wall 7 ensures the thermal insulation effect of the slow cooling furnace.

[0047] Furthermore, in the present invention, a partition plate 82 is provided in the slow cooling furnace body 2; in the present invention, the partition plate 82 is arranged perpendicular to the slow cooling furnace body 2, and the slow cooling furnace body 2 is divided into two cavities through the arrangement of the partition plate 82, and each cavity has a furnace cover 1 at the upper end, and each furnace cover 1 is connected to a cover opening mechanism 3; such an arrangement enables the slow cooling furnace body 2 to have two workstations, thereby optimizing the use efficiency of the slow cooling furnace.

[0048] Furthermore, in the present invention, a saddle 5 is provided in the slow cooling furnace body 2; the saddle 5 includes a support base 51; a lateral support 52 is respectively provided on the opposite sides of the support base 51; the design of the support base 51 and the two lateral supports 52 of the present invention enables the saddle 5 to form a structure with a vertical cross-section of U-shape; the saddle 5 is installed on the bottom refractory brick layer 6; the lateral support 52 includes a plurality of single supports 53, each of which is in the shape of a U-shaped U-shape; such an arrangement can realize the support of stacked wheels; at the same time, it can avoid the lower end surface of the stacked wheels being too close to the bottom surface of the slow cooling furnace body 2 and affecting the normal slow cooling operation.

[0049] A method for using a slow cooling furnace for a wheel, the method comprising the following steps:

[0050] Step 1: The stack of wheels is lifted to the top of the slow cooling furnace by the transfer sling. When the slow cooling furnace receives the opening instruction, the opening mechanism 3 is actuated to open the furnace cover 1. The transfer sling transfers the stack of wheels to the saddle 5 in the slow cooling furnace and places them there. The transfer sling exits the slow cooling furnace and moves to a safe position. When the slow cooling furnace receives the closing instruction, the opening mechanism 3 is actuated to close the furnace cover 1.

[0051] Step 2: After the slow cooling of the stacked wheels is completed, the transfer spreader moves empty to directly above the slow cooling furnace. The slow cooling furnace receives the instruction to open the furnace cover, and the cover opening mechanism 3 operates to open the furnace cover 1. The transfer spreader lifts the stacked wheels from the saddle 5 inside the slow cooling furnace, and the transfer spreader with the loaded stacked wheels exits the slow cooling furnace and moves to a safe position. The slow cooling furnace receives the instruction to close, and the cover opening mechanism 3 operates to close the furnace cover 1.

[0052] Specifically:

[0053] The present invention discloses a slow cooling furnace for wheels, including a slow cooling furnace body 2, and a furnace cover 1 is provided on the slow cooling furnace body 2; the furnace cover 1 is connected to the slow cooling furnace body 2 through a cover opening mechanism 3; the cover opening mechanism 3 includes drive mechanisms 3-1 distributed on both sides of the furnace cover 1; the drive mechanism 3-1 includes a link mechanism connected to the slow cooling furnace body 2 and a drive component 35 for driving the link mechanism to rotate; the link mechanism includes two swing rods 31 distributed in parallel at intervals, and both ends of each of the two swing rods 31 are respectively hinged to the slow cooling furnace body 2 and the furnace cover 1, and the two swing rods 31 are connected through a bridging rod 32; both ends of the bridging rod 32 are respectively hinged to the swing rods 31; the drive component 35 includes a drive cylinder, one end of the drive cylinder is hinged to the slow cooling furnace body 2, and the other end is hinged to the swing rod 31.

[0054] The slow cooling furnace for wheels disclosed by the present invention can realize the automatic loading and unloading of stacked high-speed rail wheels of different specifications into and out of the slow cooling furnace after heat treatment, replacing the cover opener and a special overhead crane to open the slow cooling furnace cover 1, and avoiding the limitations such as inaccurate positioning of manual operation of the overhead crane damaging the furnace body and inaccurate timing of opening the cover wasting production time.

[0055] For the slow cooling furnace for wheels disclosed by the present invention, the opening and closing of the furnace cover 1 are controlled by a cylinder for a four-bar linkage mechanism. The structure is compact, and the action rhythm can meet the production beat and positioning accuracy required by the existing process, with good stability and high reliability.

[0056] Through the structural design of the slow cooling furnace body 2 and the saddle 5 inside the furnace, the slow cooling furnace for wheels disclosed by the present invention can meet the slow cooling requirements of stacked wheels of different specifications and has universality.

[0057] The slow cooling furnace for wheels disclosed by the present invention can realize the automatic uncovering of stacked wheels of different sizes and specifications to enable them to enter and exit the slow cooling furnace. During the automatic uncovering process, the performance is stable and reliable, and the working efficiency is high.

[0058] Specific solution:

[0059] The slow cooling furnace body 2 is made of steel structure, and is divided into two parts in a "day" shape by steel plates in the middle. Refractory bricks are laid at the bottom to ensure the heat preservation effect. The slow cooling furnace body 2 is provided with openings for installing thermocouples to monitor and record the temperature inside the furnace in real time.

[0060] The slow cooling furnace cover 1 consists of a cover body and heat insulation materials.

[0061] The cover opening mechanism 3 mainly includes a connecting rod mechanism and a driving component 35; the driving component 35 cooperates with the connecting rod mechanism to realize rapid opening and closing of the furnace cover 1 with high working efficiency.

[0062] The connecting rod mechanism includes two swing rods 31 that are distributed in parallel at intervals. One end of the two swing rods 31 is hinged to the slow cooling furnace body 2, and the other end is hinged to the furnace cover 1. The two swing rods 31 are connected by a bridging rod 32; the two ends of the bridging rod 32 are hinged to the swing rods 31 respectively; at the same time, the two swing rods 31 are connected to the slow cooling furnace body 2 through a support frame 33, and the support frame 33 also acts as a connecting rod, thereby forming a four-bar linkage. The connecting rod and the shaft are connected by a key, and the structure is stable and reliable.

[0063] The saddle 5 is made of heat-resistant alloy steel and is integrally cast to meet the high temperature requirements and deformation resistance requirements in the furnace.

[0064] The advantages of the present invention are: the automatic cover-opening slow cooling furnace after heat treatment of the stacked wheels can replace the existing cover-opening machine and cooperate with the special crane to open the slow cooling furnace cover 1, the automation degree of the production line is improved, and the operation efficiency is greatly improved; at the same time, the automatic cover-opening slow cooling furnace avoids the damage to the furnace body caused by the inaccurate positioning of the manually operated crane, and reduces the maintenance cost; it can meet the slow cooling needs of stacked wheels of different specifications and has universality.

[0065] The entire automatic cover slow cooling furnace has a simple structure, a high degree of automation, convenient operation and maintenance, high efficiency and strong reliability.

[0066] Embodiment 1:

[0067] As shown in the figure, the slow cooling furnace for wheels disclosed in the present invention mainly comprises a slow cooling furnace body 2, a furnace cover 1 and a cover opening mechanism 3; a saddle 5 is arranged in the slow cooling furnace body 2.

[0068] The wheel transfer hoist of the previous process lifts the stack of wheels to the top of the slow cooling furnace. The slow cooling furnace receives the opening command, and the opening mechanism 3 operates to open the furnace cover 1. The transfer hoist transfers the stack of wheels to the saddle 5 in the slow cooling furnace and places it. The hoist exits the slow cooling furnace and moves to a safe position. The slow cooling furnace receives the closing command, and the opening mechanism 3 operates to close the furnace cover 1.

[0069] Until the slow cooling of the stacked wheels is completed, the transfer hoist is empty and placed just above the slow cooling furnace. The slow cooling furnace receives the opening command, and the opening mechanism 3 operates to open the furnace cover 1. The transfer hoist transfers the stacked wheels and lifts them off the saddle 5 in the slow cooling furnace. The hoist loads the stacked wheels and exits the slow cooling furnace to a safe position. The slow cooling furnace receives the closing command, and the opening mechanism 3 operates to close the furnace cover 1.

[0070] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A slow cooling furnace for wheels, characterized in that: It comprises a slow cooling furnace body, and a furnace cover is provided on the slow cooling furnace body; The furnace cover is connected to the slow cooling furnace body through a cover opening mechanism; The cover opening mechanism includes driving mechanisms distributed on both sides of the furnace cover; The driving mechanism comprises a connecting rod mechanism connected to the slow cooling furnace body and a driving component for driving the connecting rod mechanism to rotate.

2. A wheel slow cooling furnace according to claim 1, characterized in that: The connecting rod mechanism includes two swing rods that are spaced and distributed in parallel. One end of each of the two swing rods is hinged to the slow cooling furnace body and the other end is hinged to the furnace cover. The two swing rods are connected by a bridging rod; both ends of the bridging rod are hinged to the swing rods respectively.

3. A wheel slow cooling furnace according to claim 2, characterized in that: The driving component comprises a driving cylinder, one end of which is hinged on the slow cooling furnace body, and the other end of which is hinged on the swing rod.

4. The slow cooling furnace for wheels according to claim 1, characterized in that: The slow cooling furnace body is also provided with a supporting mechanism, and the supporting mechanism comprises a supporting frame on the slow cooling furnace body, and a supporting platform is provided at one end of the supporting frame away from the slow cooling furnace body.

5. The slow cooling furnace for wheels according to claim 1, characterized in that: The slow cooling furnace body is provided with a temperature measuring mechanism, and the temperature measuring mechanism comprises a mounting hole arranged on the slow cooling furnace body, and a thermocouple is arranged in the mounting hole.

6. The slow cooling furnace for wheels according to claim 2, characterized in that: The slow cooling furnace body comprises a bottom plate, a lateral ring plate is arranged around the bottom plate; a bottom refractory brick layer is arranged on the bottom plate; and a side wall is arranged on the inner wall of the lateral ring plate.

7. The slow cooling furnace for wheels according to claim 2, characterized in that: A partition plate is arranged in the slow cooling furnace body.

8. The slow cooling furnace for wheels according to claim 1, characterized in that: A saddle is arranged in the slow cooling furnace body; the saddle comprises a support base; and a lateral support is respectively arranged on two opposite sides of the support base.

9. The slow cooling furnace for wheels according to claim 8, characterized in that: The saddle is installed on the bottom refractory brick layer; the lateral support includes a plurality of single supports, and each of the single supports is in the shape of a Chinese character U.S.

10. A method for using the slow cooling furnace for a wheel according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: Step 1: The stack of wheels is lifted to the top of the slow cooling furnace by the transfer hoist. The slow cooling furnace receives the opening command, and the cover opening mechanism is activated to open the furnace cover. The transfer hoist transfers the stack of wheels to the saddle in the slow cooling furnace and places them. The transfer hoist exits the slow cooling furnace and moves to a safe position. The slow cooling furnace receives the closing command, and the cover opening mechanism is activated to close the furnace cover. Step 2: After the slow cooling of the stacked wheels is completed, the transfer hoist is unloaded and placed directly above the slow cooling furnace. The slow cooling furnace receives the command to open the cover, and the cover opening mechanism operates to open the furnace cover. The transfer hoist transfers the stacked wheels and lifts them off the saddle in the slow cooling furnace. The transfer hoist loads the stacked wheels and exits the slow cooling furnace to a safe position. The slow cooling furnace receives the command to close, and the cover opening mechanism operates to close the furnace cover.

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