Lifting device for holding furnace

Abstract

The utility model relates to the field of casting equipment, and discloses a holding furnace lifting device which comprises a seat frame, three jacking devices used for executing the lifting action of a holding furnace are arranged on the seat frame corresponding to the bottom of the holding furnace, the number of the jacking devices is three, and the connecting lines of the three jacking devices form an isosceles triangle. The jacking device adopts a spiral lifter, and the spiral lifter is in transmission connection with a hydraulic motor. According to the lifting device, the equipment configuration is simplified, the manufacturing and maintenance cost of the equipment is reduced, the problems that a plurality of lifting oil cylinders of a traditional lifting device are limited by walking precision, action synchronism and control difficulty, and the heat preservation furnace is prone to being lifted unstably are solved, the operation safety is guaranteed, and the lifting action precision of the jacking device is improved; the traveling rollers are driven to rotate in a chain transmission mode to achieve traveling of the heat preservation furnace, the problems that a traditional oil cylinder pushes the heat preservation furnace to travel, the travel is limited, the oil cylinder is prone to being damaged and cannot be positioned in time are solved, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the field of casting equipment, in particular to a lifting device for a heat preservation furnace. Background Art

[0002] The holding furnace is a key equipment in the foundry industry. It is usually located under the casting machine and supplies casting materials to the casting machine. When filling the holding furnace with casting materials, it is often necessary to use an up and down lifting device and a front and back moving device to move the holding furnace to facilitate the smooth filling of casting materials.

[0003] Traditional insulation furnace lifting devices mostly use multiple cylinders to support the insulation furnace to perform the insulation furnace lifting action. However, in actual applications, when multiple cylinders are arranged, it is difficult to accurately locate the support points of each cylinder, resulting in uneven weight distribution of each cylinder, causing imbalance in the insulation furnace support; at the same time, due to the limitations of the walking accuracy and movement synchronization of multiple cylinders, the insulation furnace is often lifted unsteadily, causing tilting and shaking, which seriously threatens production safety; and the configuration of multiple cylinders and oil circuits increases the equipment manufacturing cost, occupies a large amount of equipment space, and increases the burden of equipment maintenance.

[0004] In addition, traditional mobile devices mostly use oil cylinders to push the holding furnace to move. This type of mobile device is limited by the stroke of the oil cylinder, and the movement range of the holding furnace is limited to the maximum and minimum strokes of the oil cylinder. In addition, the kinetic energy of the holding furnace is large during movement, and it cannot be accurately positioned. If the speed is not reduced in time when it stops, it is easy to form a destructive impact on the oil cylinder due to the inertia of the movement, causing damage to the oil cylinder. This increases the equipment maintenance cost and is easy to affect the production progress.

[0005] Based on this, developing a new type of holding furnace lifting device for application in actual production is a technical problem that needs to be solved urgently. Utility Model Content

[0006] The purpose of the utility model is to provide a heat preservation furnace lifting device to solve the problems of poor lifting stability and high maintenance cost of traditional heat preservation furnace lifting devices, and at the same time solve the problems of limited travel of the heat preservation furnace moving device and easy damage of the cylinder.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A heat preservation furnace lifting device comprises a seat frame, on which a lifting device for performing the lifting action of the heat preservation furnace is arranged corresponding to the bottom of the heat preservation furnace, three lifting devices are arranged, and the connecting line of the three lifting devices forms an isosceles triangle.

[0009] Preferably, the lifting device adopts a screw lifter, and the screw lifter is connected to a hydraulic motor to obtain the rotational power of the input end and convert it into a lifting action of a driving screw rod of the screw lifter.

[0010] Preferably, the output end of the hydraulic motor is connected to a transmission shaft, which is connected to one of the screw lifters and synchronously distributes the rotational power of the hydraulic motor to the other two screw lifters through a synchronous steering gear, thereby achieving synchronous lifting action of the three screw lifts.

[0011] Preferably, a T-shaped support plate is arranged on the lifting device corresponding to the bottom of the insulation furnace for lifting the insulation furnace, and the three ends of the T-shaped support plate are respectively connected to the three lifting devices.

[0012] Preferably, a position sensor is provided on the seat frame corresponding to the lifting device, for sensing the lifting state of the lifting device.

[0013] Preferably, the lifting device also includes a walking structure for horizontal movement of the insulation furnace, the walking structure includes traveling rollers arranged at the bottom of the insulation furnace, the frame is provided with guide rails corresponding to the traveling rollers, the traveling rollers are rollingly connected to the guide rails, a power device is configured corresponding to the traveling rollers, the power device includes a driving motor fixedly connected to the insulation furnace, and the driving motor is transmission-connected to the traveling rollers.

[0014] Preferably, the output end of the driving motor is connected to a driving shaft, the end of the driving shaft is connected to a sprocket, and the sprocket is connected to the axle of the traveling roller through a chain transmission to achieve a transmission connection between the traveling roller and the driving motor.

[0015] Preferably, a position sensor is provided corresponding to the walking structure for real-time monitoring of the walking state of the insulation furnace.

[0016] The beneficial effect of the utility model is that the utility model adopts three lifting devices, which simplifies the equipment configuration and reduces the equipment manufacturing and maintenance costs compared with the lifting structure of the traditional multiple lifting cylinders. At the same time, the three-point lifting structure formed by the three lifting devices can determine the lifting plane through three positionings, and fewer lifting devices reduce the complexity of synchronous control, eliminating the trouble of the traditional multiple lifting cylinders needing to accurately calculate the support position, and improving the traditional multiple lifting cylinders. The problem of unstable lifting and even tilting and shaking is improved due to the limitations of walking accuracy, movement synchronization and control difficulty, thereby ensuring the safety of the operation. The spiral lifter is used to replace the traditional lifting cylinder configuration, and the worm gear transmission method of the spiral lifter replaces the hydraulic transmission method, which improves the lifting and lowering action accuracy of the lifting device, and further improves the problem of unstable lifting and lowering caused by the low action accuracy and poor synchronization of the lifting cylinder.

[0017] The utility model drives the traveling roller to rotate and travel by chain transmission, which improves the problems of limited travel of the traditional oil cylinder-driven holding furnace, easy damage of the oil cylinder, and inability to locate in time, and is easy to maintain. At the same time, the drive motor is easier to integrate with the production line automation control system to achieve speed reduction and stop at any position, and reduce the possibility of human error. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a structural schematic diagram of the utility model in use state.

[0020] Figure 2 for Figure 1 Schematic diagram of the 3D structure behind the hidden holding furnace.

[0021] Figure 3 for Figure 1 Schematic diagram of the 3D structure after the seat frame is hidden.

[0022] In the figure: 1--seat frame; 11--guide rail; 2--lifting device; 21--screw lifter; 211--driving screw; 22--hydraulic motor; 23--transmission shaft; 24--synchronous steering gear; 25--T-type pallet; 26--position sensor; 3--travel structure; 31--travel roller; 32--drive motor; 33--drive shaft; 34--sprocket; 35--chain; 36--axle. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] like Figure 1-3As shown, a heat preservation furnace lifting device comprises a seat frame 1, and a lifting device 2 for performing the lifting action of the heat preservation furnace is arranged on the seat frame 1 corresponding to the bottom of the heat preservation furnace, and three lifting devices 2 are arranged, and the connection line of the three lifting devices 2 forms an isosceles triangle. When in use, the three lifting devices 2 act synchronously to perform the lifting or lowering action on the heat preservation furnace, so as to realize the lifting operation of the heat preservation furnace. This embodiment adopts three lifting devices 2, which simplifies the equipment configuration and reduces the manufacturing and maintenance costs of the equipment compared with the lifting structure of the traditional multiple lifting cylinders. At the same time, the three-point lifting structure formed by the three lifting devices 2 can determine the lifting plane through three positionings, and fewer lifting devices reduce the complexity of synchronous control, eliminate the trouble of the traditional multiple lifting cylinders needing to accurately calculate the support position, and improve the traditional multiple lifting cylinders are limited by walking accuracy, action synchronization and control difficulty, and are prone to unstable lifting of the heat preservation furnace, and even tilting and shaking, thereby ensuring the safety of operation.

[0025] As a preferred embodiment, Figure 2-3 As shown, the jacking device 2 adopts a spiral lifter 21, and the spiral lifter 21 is connected to the hydraulic motor 22 to obtain the rotational power, and the lifting action of the driving screw 211 of the spiral lifter 21 is converted through the worm gear mechanism. In order to achieve the synchronous action of the three spiral lifters 21, the output end of the hydraulic motor 22 is connected to a transmission shaft 23, and the transmission shaft 23 is connected to one of the spiral lifters 21, and the rotational power of the hydraulic motor 22 is synchronously distributed to the other two spiral lifters 21 through the synchronous steering gear 24, so as to achieve the synchronous lifting action of the three spiral lifters 21. In this embodiment, the spiral lifter 21 is used to replace the traditional lifting cylinder configuration, and the worm gear transmission mode of the spiral lifter 21 replaces the hydraulic transmission mode, thereby improving the lifting action accuracy of the jacking device 2, and further improving the problem of unstable lifting action caused by low action accuracy and poor synchronization of the lifting cylinder.

[0026] Furthermore, if Figure 2 As shown, a T-shaped support plate 25 is arranged on the jacking device 2 corresponding to the bottom of the insulation furnace, which is used to lift the insulation furnace, and the three ends of the T-shaped support plate 25 are respectively connected to three lifting devices. When performing the lifting action, the jacking device 2 lifts the T-shaped support plate 25, so that the upper end surface of the T-shaped support plate 25 contacts the bottom surface of the insulation furnace, and lifts the insulation furnace off the frame 1; when descending, the jacking device 2 drives the T-shaped support plate 25 to fall, and places the insulation furnace on the frame 1, and the T-shaped support plate 25 continues to fall a certain distance and separates from the bottom surface of the insulation furnace. The setting of the T-shaped support increases the contact area between the jacking device 2 and the bottom surface of the insulation furnace, ensuring the stability of the lifting action. At the same time, the T-shaped support plate 25 can be adapted to insulation furnaces of different specifications and sizes to perform lifting operations, which expands the scope of application compared to the traditional multi-cylinder lifting device.

[0027] Furthermore, a position sensor 26 is provided on the seat frame 1 corresponding to the lifting device 2, which is used to sense the lifting state of the lifting device and monitor the lifting state and synchronization of the lifting device in real time to ensure the stable lifting of the insulation furnace and ensure the safety of the operation.

[0028] As a preferred embodiment, the utility model further includes a walking structure 3 for horizontal movement of the holding furnace. The walking structure 3 includes a traveling roller 31 arranged at the bottom of the holding furnace, and a guide track 11 is arranged on the seat frame 1 corresponding to the traveling roller 31, and the traveling roller 31 is rollingly connected to the guide track 11. A power device is configured corresponding to the traveling roller 31, and the power device includes a driving motor 32 fixedly connected to the holding furnace, and the driving motor 32 is drivingly connected to the traveling roller 31.

[0029] Preferably, the output end of the driving motor 32 is connected to a driving shaft 33, and the end of the driving shaft 33 is connected to a sprocket 34, and the sprocket 34 is connected to the wheel axle 36 of the traveling roller 31 through a chain 35, so as to realize the transmission connection between the traveling roller 31 and the driving motor 32. This embodiment drives the traveling roller 31 to rotate and travel by chain transmission, which improves the problems of the traditional oil cylinder driving the holding furnace, such as limited travel range, easy damage of the oil cylinder, and inability to locate in time, and is convenient for maintenance. At the same time, the driving motor 32 is easier to integrate with the production line automation control system, realizes speed reduction and stop at any position, and reduces the possibility of human error.

[0030] Furthermore, a position sensor 26 is provided corresponding to the walking structure 3 for real-time monitoring of the walking state of the insulation furnace to achieve stopping and moving at any position.

[0031] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto. For ordinary technicians in this field, without departing from the principle of the present invention, any deformation made should be regarded as belonging to the protection of the present invention.

Claims

1. A holding furnace lifting device, characterized in that: It comprises a seat frame (1), on which a lifting device (2) for performing lifting actions of the insulation furnace is arranged corresponding to the bottom of the insulation furnace, wherein three lifting devices (2) are arranged, and the connecting line of the three lifting devices (2) forms an isosceles triangle.

2. A holding furnace lifting device according to claim 1, characterized in that: The lifting device (2) adopts a spiral lifter (21), and the spiral lifter (21) is connected to a hydraulic motor (22) in a transmission manner to obtain rotational power at an input end and convert it into a lifting action of a driving screw rod (211) of the spiral lifter (21).

3. A holding furnace lifting device according to claim 2, characterized in that: The output end of the hydraulic motor (22) is connected to a transmission shaft (23), and the transmission shaft (23) is connected to one of the spiral lifters (21) in a transmission manner, and synchronously distributes the rotational power of the hydraulic motor (22) to the other two spiral lifters (21) through a synchronous steering gear (24), thereby achieving synchronous lifting actions of the three spiral lifters (21).

4. The holding furnace lifting device according to claim 1, characterized in that: A T-shaped support plate (25) is arranged on the lifting device (2) corresponding to the bottom of the insulation furnace and is used to lift the insulation furnace. The three ends of the T-shaped support plate (25) are respectively connected to the three lifting devices.

5. The holding furnace lifting device according to claim 1, characterized in that: A position sensor (26) is provided on the seat frame (1) corresponding to the lifting device (2) and is used to sense the lifting state of the lifting device.

6. The holding furnace lifting device according to claim 1, characterized in that: The invention also comprises a walking structure (3) for horizontal movement of the heat preservation furnace, the walking structure (3) comprising a traveling roller (31) arranged at the bottom of the heat preservation furnace, a guide track (11) being arranged on the seat frame (1) corresponding to the traveling roller (31), the traveling roller (31) being rollingly connected to the guide track (11), a power device being arranged corresponding to the traveling roller (31), the power device comprising a driving motor (32) fixedly connected to the heat preservation furnace, the driving motor (32) being drivingly connected to the traveling roller (31).

7. A holding furnace lifting device according to claim 6, characterized in that: The output end of the driving motor (32) is connected to a driving shaft (33), the end of the driving shaft (33) is connected to a sprocket (34), and the sprocket (34) is connected to the wheel axle (36) of the traveling roller (31) through a chain (35), thereby realizing a transmission connection between the traveling roller (31) and the driving motor (32).

8. The holding furnace lifting device according to claim 6, characterized in that: A position sensor (26) is provided corresponding to the walking structure (3) and is used for real-time monitoring of the walking state of the insulation furnace.

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