An automatic furnace lid opening and closing device

Abstract

This utility model relates to the field of furnace lid opening and closing technology, and discloses an automatic furnace lid opening and closing device, including a movable frame and a furnace lid. A circular hole is provided at the top of the movable frame, and a hydraulic push rod is installed on the inner wall of the circular hole. A connecting assembly is provided between the bottom of the hydraulic push rod and the top of the furnace lid. In this automatic furnace lid opening and closing device, the hydraulic push rod extends, driving the mounting plate and connecting seat downwards. The connecting rod at the top of the furnace lid enters the circular groove of the connecting seat. When the first truncated cone has completely passed through, the spring resets and pushes the trapezoidal block out, its top fitting against the bottom of the first truncated cone, firmly connecting the furnace lid and the connecting seat. The hydraulic push rod continues to extend, and the connecting seat moves further downwards. At this time, the second truncated cone contacts the bottom of the trapezoidal block. The connecting seat then moves upwards, disengaging the first truncated cone from the trapezoidal block. The furnace lid separates from the connecting assembly and remains on the furnace body, achieving mechanical self-locking and release of the furnace lid, shortening the single operation time.

Description

Technical Field

[0001] This utility model relates to the field of furnace lid opening and closing technology, and in particular to an automatic furnace lid opening and closing device. Background Technology

[0002] Automatic furnace lid opening and closing devices are a key component of industrial furnace automation systems. Their core function is to achieve automatic opening and closing of the furnace lid through the coordination of mechanical structure and control system, thereby improving production efficiency, reducing labor costs, and ensuring operational safety. Through the combination of mechanical and automation technologies, automatic furnace lid opening and closing devices have become an important link in the intelligent upgrading of industrial furnaces. Their design needs to be customized according to specific working conditions to balance performance, cost, and reliability.

[0003] However, existing automatic furnace cover opening and closing devices have the following disadvantages:

[0004] (1) Traditional industrial furnace covers need to be fixed manually with bolts or clamps, which greatly increases the time spent on each disassembly and assembly. The high temperature environment can easily cause burns to operators. Frequent handling of heavy furnace covers increases labor intensity and poses a risk of falling and injuring people.

[0005] (2) Fixed track furnace opening device is only applicable to a single furnace body and is difficult to be compatible with multi-furnace production lines with different spacing. The track is difficult to adjust after installation and needs to be re-laid when the workshop layout is changed, which is costly.

[0006] Therefore, this utility model provides an automatic furnace cover opening and closing device. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] The problem solved by this utility model is to provide a highly practical automatic furnace cover opening and closing device, which solves the problems mentioned in the background art, such as greatly increasing the time spent on each disassembly and assembly, the high temperature environment easily causing burns to operators, and the difficulty in compatibility with multi-furnace production lines with different spacing.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model is implemented through the following technical solution: an automatic furnace cover opening and closing device, including a movable frame and a furnace cover, wherein a circular hole is provided on the top of the movable frame, a hydraulic push rod is installed on the inner side wall of the circular hole, a connecting component is provided at the bottom of the hydraulic push rod and the top of the furnace cover, and movable components are provided on both sides of the bottom of the movable frame;

[0011] The connecting assembly includes a mounting plate installed at the bottom of the hydraulic push rod, a connecting seat installed at the bottom of the mounting plate, a circular groove formed at the bottom of the connecting seat, a connecting rod installed at the top of the furnace cover, a first frustum installed at the top of the connecting rod, a second frustum movably sleeved on the surface of the connecting rod, a rectangular groove formed on the inner wall of the circular groove, a trapezoidal block slidably connected to the inner wall of the rectangular groove, a spring connecting one side of the trapezoidal block and the inner wall of the rectangular groove, and the top of the trapezoidal block contacting the bottom of the first frustum.

[0012] The movable component includes two support seats fixedly connected to both sides of the bottom of the movable frame. The front of the support seat is provided with a sliding groove, and a guide rail is slidably connected to the sliding groove. A motor is installed on the inner side wall of the sliding groove. A transmission rod is splined to the output end of the motor. A gear is fitted on the surface of the transmission rod. A strip groove is provided on the top of the guide rail. A rack is installed on the inner side wall of the strip groove, and the surface of the gear meshes with the surface of the rack.

[0013] Optionally, a fixing plate is fixedly connected to the bottom of the guide rail, and a mounting hole is provided on the top of the fixing plate. The fixing plate at the bottom of the guide rail can be easily fixed to the ground through the guide rail mounting hole provided on the top.

[0014] Optionally, positioning cylinders are fixedly connected to both sides of the bottom of the mounting plate, and positioning rods are installed on both sides of the top of the furnace cover. The positioning rods are movably connected to the inner side wall of the positioning cylinders. When the connecting seat aligns with the furnace cover, the positioning rods can quickly slide into the positioning cylinders to achieve precise guidance, ensuring that the connecting rods accurately enter the circular groove of the connecting seat, avoiding deviation, and greatly improving connection efficiency and success rate.

[0015] Optionally, limit rods are fixedly connected to both sides of the top of the mounting plate, and a circular hole adapted to the limit rod is opened at the bottom of the movable frame. The limit rod is movably connected to the inner wall of the circular hole. During the extension and retraction of the hydraulic push rod, the limit rod restricts the swing and offset of the mounting plate, making the connecting assembly more stable when driving the furnace cover to move, and enhancing the stability of the connection.

[0016] Optionally, baffles are fixedly connected to both ends of the guide rail, and the bottom of the baffle is fixedly connected to the top of the fixed plate. The baffles prevent the moving frame from derailing due to exceeding the limit position, which could cause equipment damage and safety accidents.

[0017] Optionally, a limiting block is fixedly connected to the top of the trapezoidal block, and a limiting groove adapted to the limiting block is provided on the inner top wall of the rectangular groove. The limiting block is movably connected to the inner side wall of the limiting groove. When the trapezoidal block is ejected by the spring or compressed and contracted, the limiting block slides along the limiting groove to restrict the movement trajectory of the trapezoidal block, prevent it from tilting or getting stuck in the rectangular groove, and ensure the normal operation of the connecting components.

[0018] (III) Beneficial Effects

[0019] This utility model provides an automatic furnace lid opening and closing device, which has the following beneficial effects:

[0020] 1. This automatic furnace cover opening and closing device features a hydraulic push rod that extends, causing the mounting plate and connecting seat to move downwards. The connecting rod at the top of the furnace cover enters the circular groove of the connecting seat. After the first truncated cone has completely passed through, the spring returns to its original position, pushing the trapezoidal block out. Its top fits against the bottom of the first truncated cone, firmly connecting the furnace cover to the connecting seat. The hydraulic push rod continues to extend, causing the connecting seat to move further downwards. At this point, the second truncated cone contacts the bottom of the trapezoidal block. The connecting seat then moves upwards, disengaging the first truncated cone from the trapezoidal block. The furnace cover separates from the connecting assembly and remains on the furnace body, achieving mechanical self-locking and release of the furnace cover without manual intervention, thus shortening the single operation time and improving work efficiency.

[0021] 2. In this automatic furnace cover opening and closing device, after the motor starts, the output end drives the gear to rotate through the transmission rod. Since the gear meshes with the rack in the top slot of the guide rail, and the support seat is slidably connected to the guide rail through the sliding groove, the rotational motion of the gear is converted into the linear motion of the support seat along the guide rail. The moving frame moves synchronously with the support seat, thereby driving the hydraulic push rod and connecting components to complete the horizontal position adjustment. The guide rail is connected to the ground through the fixed plate. The length and quantity can be flexibly adjusted according to the workshop layout to adapt to the configuration of production lines of different scales and has good scalability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the mobile frame structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the support structure of this utility model;

[0025] Figure 4 This is a cross-sectional view of the mobile frame of this utility model.

[0026] In the diagram: 1. Moving frame; 101. Hydraulic push rod; 102. Furnace cover; 2. Connecting assembly; 201. Mounting plate; 202. Connecting seat; 203. Connecting rod; 204. First frustum; 205. Second frustum; 206. Trapezoidal block; 207. Spring; 3. Moving assembly; 301. Support seat; 302. Guide rail; 303. Motor; 304. Gear; 305. Rack; 4. Fixing plate; 5. Positioning cylinder; 6. Positioning rod; 7. Limiting rod; 8. Baffle; 9. Limiting block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figures 1 to 4 This utility model provides a technical solution: an automatic furnace cover opening and closing device, including a movable frame 1 and a furnace cover 102. The top of the movable frame 1 is provided with a circular hole, and a hydraulic push rod 101 is installed on the inner side wall of the circular hole. A connecting component 2 is provided at the bottom of the hydraulic push rod 101 and the top of the furnace cover 102. Movable components 3 are provided on both sides of the bottom of the movable frame 1. The electric hydraulic push rod 101 of model DYTZ-5000 is selected.

[0029] The connecting assembly 2 includes a mounting plate 201 installed at the bottom of the hydraulic push rod 101. A connecting seat 202 is installed at the bottom of the mounting plate 201, and a circular groove is formed at the bottom of the connecting seat 202. A connecting rod 203 is installed at the top of the furnace cover 102, and a first frustum 204 is installed at the top of the connecting rod 203. The top of the first frustum 204 contacts the top of the trapezoidal block 206, and under the action of the spring 207, a firm connection is achieved between the furnace cover 102 and the connecting seat 202. Its inclined surface facilitates the compression and contraction of the trapezoidal block 206. A second frustum 205 is movably sleeved on the surface of the connecting rod 203. When the second frustum 205 is pressed down, it contacts the trapezoidal block 206. At the bottom of block 206, the trapezoidal block 206 is forced to contract, releasing the restriction on the first frustum 204 and realizing the separation of the furnace cover 102 from the connecting component 2. A rectangular groove is opened on the inner side wall of the circular groove, and the trapezoidal block 206 is slidably connected to the inner side wall of the rectangular groove. The trapezoidal block 206 pops out under the action of spring 207. The top contacts the bottom of the first frustum 204 to realize the restriction, and the bottom contracts when it contacts the second frustum 205. It is a key execution component for connecting and separating the furnace cover 102. One side of the trapezoidal block 206 and the inner side wall of the rectangular groove are connected together by spring 207. The top of the trapezoidal block 206 contacts the bottom of the first frustum 204.

[0030] The moving component 3 includes two support seats 301 fixedly connected to both sides of the bottom of the moving frame 1. A sliding groove is formed on the front of each support seat 301, and a guide rail 302 is slidably connected to the sliding groove. The guide rail 302 slidably engages with the sliding groove of the support seat 301, providing a track for the horizontal movement of the moving frame 1. A rack 305 in the top slot meshes with a gear 304 to transmit power. A motor 303 is installed on the inner wall of the sliding groove. A transmission rod is splined to the output end of the motor 303, and a gear 304 is fitted onto the surface of the transmission rod. 4. It meshes with the rack 305, converting the rotational motion of the motor 303 into the linear motion of the support 301 along the guide rail 302. The top of the guide rail 302 is provided with a strip groove, and the rack 305 is installed on the inner side wall of the strip groove. The rack 305 is installed on the inner side wall of the top strip groove of the guide rail 302 and cooperates with the gear 304 to provide a meshing basis for the rotation of the gear 304, realizing power transmission and motion conversion. The surface of the gear 304 meshes with the surface of the rack 305. A 110ST-M04030 servo motor 303 is used.

[0031] A fixing plate 4 is fixedly connected to the bottom of the guide rail 302. The top of the fixing plate 4 is provided with a mounting hole. The fixing plate 4 at the bottom of the guide rail 302 can be easily fixed to the ground through the mounting hole of the guide rail 302 at the top.

[0032] Positioning cylinders 5 are fixedly connected to both sides of the bottom of the mounting plate 201, and positioning rods 6 are installed on both sides of the top of the furnace cover 102. The positioning rods 6 are movably connected to the inner wall of the positioning cylinders 5. When the connecting seat 202 is docked with the furnace cover 102, the positioning rods 6 can quickly slide into the positioning cylinders 5 to achieve precise guidance, ensuring that the connecting rod 203 accurately enters the circular groove of the connecting seat 202, avoiding deviation, and greatly improving the connection efficiency and success rate.

[0033] Limiting rods 7 are fixedly connected to both sides of the top of the mounting plate 201. The bottom of the movable frame 1 is provided with a circular hole that matches the limiting rods 7. The limiting rods 7 are movably connected to the inner wall of the circular hole. During the extension and retraction of the hydraulic push rod 101, the limiting rods 7 restrict the swing and offset of the mounting plate 201, making the connecting assembly 2 more stable when driving the furnace cover 102 to move, and enhancing the stability of the connection.

[0034] Both ends of the guide rail 302 are fixedly connected to baffles 8. The bottom of the baffles 8 is fixedly connected to the top of the fixed plate 4. The baffles 8 prevent the moving frame 1 from derailing due to exceeding the limit position, which could cause equipment damage and safety accidents.

[0035] The top of the trapezoidal block 206 is fixedly connected to the limiting block 9. The inner top wall of the rectangular groove is provided with a limiting groove that matches the limiting block 9. The limiting block 9 is movably connected to the inner side wall of the limiting groove. When the trapezoidal block 206 is popped out by the action of the spring 207 or squeezed and contracted, the limiting block 9 slides along the limiting groove to restrict the movement trajectory of the trapezoidal block 206, prevent it from tilting or getting stuck in the rectangular groove, and ensure the normal operation of the connecting component 2.

[0036] In this invention, the working steps of the device are as follows:

[0037] First step: The hydraulic push rod 101 extends, driving the mounting plate 201 and connecting seat 202 downwards. The connecting rod 203 at the top of the furnace cover 102 enters the circular groove of the connecting seat 202. The first frustum 204 first contacts the inclined surface of the trapezoidal block 206, forcing the trapezoidal block 206 to compress the spring 207 and retract into the rectangular groove. After the first frustum 204 has completely passed through, the spring 207 returns to its original position, pushing the trapezoidal block 206 out, its top fitting against the bottom of the first frustum 204. At the same time, the second frustum 205 is squeezed against the first frustum. Below 204, a double limit is formed, the furnace cover 102 is firmly connected to the connecting seat 202, the hydraulic push rod 101 continues to extend, the connecting seat 202 moves further downward, at this time the second frustum 205 contacts the bottom of the trapezoidal block 206, its inclined surface forces the trapezoidal block 206 to compress the spring 207 again to retract, releasing the limit on the first frustum 204. When the hydraulic push rod 101 retracts, the connecting seat 202 moves upward, the first frustum 204 separates from the trapezoidal block 206, the furnace cover 102 separates from the connecting assembly 2 and remains on the furnace body;

[0038] The second step: When the control system receives the instruction to move to the next furnace cover 102, the motor 303 starts and the output end drives the gear 304 to rotate through the transmission rod. Since the gear 304 meshes with the rack 305 in the top slot of the guide rail 302, and the support 301 is slidably connected to the guide rail 302 through the slide groove, the rotational motion of the gear 304 is converted into the linear motion of the support 301 along the guide rail 302. The moving frame 1 moves synchronously with the support 301, thereby driving the hydraulic push rod 101 and the connecting assembly 2 to complete the horizontal position adjustment.

[0039] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0040] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0041] It will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic furnace lid opening and closing device, comprising a movable frame (1) and a furnace lid (102), characterized in that: The top of the mobile frame (1) is provided with a circular hole, and a hydraulic push rod (101) is installed on the inner side wall of the circular hole. A connecting component (2) is provided at the bottom of the hydraulic push rod (101) and the top of the furnace cover (102). A mobile component (3) is provided on both sides of the bottom of the mobile frame (1). The connecting assembly (2) includes a mounting plate (201) installed at the bottom of the hydraulic push rod (101), a connecting seat (202) installed at the bottom of the mounting plate (201), a circular groove opened at the bottom of the connecting seat (202), a connecting rod (203) installed at the top of the furnace cover (102), a first frustum (204) installed at the top of the connecting rod (203), a second frustum (205) movably sleeved on the surface of the connecting rod (203), a rectangular groove opened on the inner side wall of the circular groove, a trapezoidal block (206) slidably connected to the inner side wall of the rectangular groove, a spring (207) connected between one side of the trapezoidal block (206) and the inner side wall of the rectangular groove, and the top of the trapezoidal block (206) contacting the bottom of the first frustum (204). The moving component (3) includes two support seats (301) fixedly connected to the bottom sides of the moving frame (1). The front of the support seat (301) is provided with a sliding groove, and a guide rail (302) is slidably connected to the sliding groove. A motor (303) is installed on the inner side wall of the sliding groove. A transmission rod is splined to the output end of the motor (303). A gear (304) is fitted on the surface of the transmission rod. A strip groove is provided on the top of the guide rail (302). A rack (305) is installed on the inner side wall of the strip groove. The surface of the gear (304) meshes with the surface of the rack (305).

2. The automatic furnace lid opening and closing device according to claim 1, characterized in that: The bottom of the guide rail (302) is fixedly connected to a fixing plate (4), and the top of the fixing plate (4) is provided with mounting holes.

3. The automatic furnace lid opening and closing device according to claim 1, characterized in that: Positioning cylinders (5) are fixedly connected to both sides of the bottom of the mounting plate (201), and positioning rods (6) are installed on both sides of the top of the furnace cover (102). The positioning rods (6) are movably connected to the inner wall of the positioning cylinders (5).

4. The automatic furnace lid opening and closing device according to claim 1, characterized in that: Limiting rods (7) are fixedly connected to both sides of the top of the mounting plate (201). The bottom of the movable frame (1) is provided with a circular hole that matches the limiting rod (7). The limiting rod (7) is movably connected to the inner wall of the circular hole.

5. The automatic furnace lid opening and closing device according to claim 1, characterized in that: Both ends of the guide rail (302) are fixedly connected to baffles (8), and the bottom of the baffles (8) is fixedly connected to the top of the fixing plate (4).

6. The automatic furnace lid opening and closing device according to claim 1, characterized in that: The top of the trapezoidal block (206) is fixedly connected to a limiting block (9), and the inner top wall of the rectangular groove is provided with a limiting groove that is adapted to the limiting block (9). The limiting block (9) is movably connected to the inner side wall of the limiting groove.

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