Damping foot for a calcining furnace

Abstract

The utility model provides a kind of shock absorbing support foot of calcining furnace, it is related to electric heating furnace technical field, mainly for solving the problem of calcining furnace due to ground vibration and lead electric furnace wire fracture.This utility model includes upper disc body, lower disc body and disc spring assembly, wherein, upper disc body is fixed at the bottom of furnace body, lower disc body is fixed on ground, disc spring assembly is connected between upper disc body and lower disc body;One main oil cylinder and multiple sub-oil cylinders are provided on lower disc body, main oil cylinder is arranged along vertical direction, its upper part is air cavity, its lower part is oil cavity, its piston rod is hinged with upper disc body;Sub-oil cylinder also has air cavity and oil cavity, its oil cavity is communicated with the oil cavity of main oil cylinder, compression spring and screw plug are provided in the air cavity of sub-oil cylinder, multiple damping air holes which are communicated with outside are provided on screw plug.The utility model cooperates with gas-liquid damping structure and disc spring assembly, can play significant damping effect to calcining furnace, avoid calcining furnace due to ground vibration and lead electric furnace wire fracture.

Description

Technical Field

[0001] This utility model is specifically a shock-absorbing support for a calcining furnace, and relates to the field of electric heating furnace technology. Background Technology

[0002] A calcining furnace is an electrically heated furnace installed next to a forging machine to heat workpieces. Multiple sets of heating wires are connected inside the furnace, and four legs are installed at the bottom. Normally, the calcining furnace is placed in the workshop, and the four legs only serve to support and level it. The current problem is that the forging machine generates strong vibrations when forging workpieces, and these vibrations are transmitted to the calcining furnace through the ground. This can cause the heating wire connections to loosen in minor cases, and breakage in severe cases. Although some vibration damping measures have been taken on the legs (adding rubber pads, compression springs, etc.), the damping effect is not significant, and the calcining furnace is prone to tilting due to instability in its center of gravity. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model discloses a shock-absorbing support for a calcining furnace, employing the following technical solution: A shock-absorbing support for a calcining furnace includes a furnace body, an upper plate, a lower plate, and a disc spring assembly. The upper plate is fixed to the bottom of the furnace body, the lower plate is fixed to the ground, and the disc spring assembly connects the upper and lower plates. A main hydraulic cylinder and multiple sub-hydraulic cylinders are provided on the lower plate. The main hydraulic cylinder is arranged vertically, with an air chamber at its upper part and an oil chamber at its lower part, and its piston rod is hinged to the upper plate. The sub-hydraulic cylinders also have air chambers and oil chambers, and their oil chambers are connected to the oil chambers of the main hydraulic cylinders. A compression spring and a screw plug are provided in the air chamber of the sub-hydraulic cylinders, and multiple damping air holes communicating with the outside are provided on the screw plugs.

[0004] Further technical improvements: Anchor bolts are integrally connected to the lower part of the lower plate, and the lower plate is fixed to the ground by the pre-embedded anchor bolts.

[0005] Further improvement of the technical solution: A ball head is provided at the upper end of the piston rod of the main cylinder, and a ball socket that mates with the ball head is provided at the lower end of the upper plate. The piston rod is hinged to the upper plate through the ball head.

[0006] Further improve the technical solution: The disc spring assembly consists of a long bolt, a disc spring leaf and a nut, and multiple disc spring assemblies are connected circumferentially between the upper plate and the lower plate.

[0007] Further improve the technical solution: Multiple sub-cylinders are arranged radially along the lower plate, wherein the air chamber of the sub-cylinder faces the outside of the lower plate.

[0008] Further improve the technical solution: The screw plug is screwed into the air chamber of the sub-cylinder, and the compression spring is set between the piston of the sub-cylinder and the screw plug.

[0009] After implementing the above technical solution, compared with the prior art, the present invention has the following beneficial effects: 1. The main oil cylinder, sub-oil cylinder, compression spring, and screw plug constitute a gas-liquid damping structure, which can buffer the up-and-down movement of the lower plate. The gas-liquid damping, in conjunction with the extension and retraction of the disc spring assembly, can significantly reduce the vibration of the calcining furnace and prevent the furnace wire from breaking due to ground vibration.

[0010] 2. The piston rod and the upper plate are connected by a ball joint structure, which can ensure the reliability of the connection between the piston rod and the upper plate and avoid the piston rod bearing lateral torque.

[0011] 3. This utility model can level the calcining furnace by rotating the screw plug, thus preventing the calcining furnace from tilting due to instability of the center of gravity. Attached Figure Description

[0012] Appendix Figure 1 The diagram shown is a schematic of the calcining furnace.

[0013] Appendix Figure 2 The diagram shown is a structural schematic of the shock-absorbing support.

[0014] Appendix Figure 3 The diagram shown is a cross-sectional view of the lower plate.

[0015] Appendix Figure 4 The diagram shown is a cross-sectional view of the shock-absorbing support.

[0016] Appendix Figure 5 The diagram shows the working process when the ground vibrates upwards.

[0017] Appendix Figure 6 The diagram shows the working process when the ground vibrates downwards.

[0018] In the attached diagram: 1. Furnace body; 2. Upper plate; 3. Lower plate; 3.1. Main oil cylinder; 3.2. Main piston rod; 3.3. Sub-oil cylinder; 3.4. Sub-piston; 3.5. Compression spring; 3.6. Plug; 3.7. Anchor bolt; 4. Disc spring assembly. Detailed Implementation

[0019] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] A vibration-damping support for a calcining furnace, relating to the field of electric heating furnace technology, is mainly used to solve the problem of furnace wire breakage caused by ground vibration in existing calcining furnaces. The composition and working principle of this utility model are described in detail below.

[0021] See attached document Figure 1 The calcining furnace of this utility model has a furnace body 1, and four shock-absorbing feet are provided at the four corners of the bottom of the furnace body 1.

[0022] See attached document Figure 2 The shock-absorbing support mainly consists of an upper plate 2, a lower plate 3, and a disc spring assembly 4. The upper plate 2 is fixed to the bottom of the furnace body 1, and the lower plate 3 is fixed to the ground. The lower plate 3 can be fixed to the ground in various ways, such as using expansion bolts. In this embodiment, anchor bolts 3.7 are integrally connected to the lower part of the lower plate 3, and the lower plate 3 is fixed to the ground by pre-embedded anchor bolts 3.7.

[0023] The upper plate 2 and the lower plate 3 have flanges. The disc spring assembly 4 consists of long bolts, multiple pairs of disc springs and nuts. The four sets of disc spring assemblies 4 are vertically connected between the upper plate 2 and the lower plate 3 along the circumference of the flanges by long bolts and nuts.

[0024] See attached document Figure 3 and attached Figure 4A main hydraulic cylinder 3.1 and four sub-cylinders 3.3 are mounted on the lower plate 3. The main hydraulic cylinder 3.1 is arranged vertically, with the main piston as the boundary; the upper part is an open air chamber, and the lower part is an oil chamber. Its main piston rod 3.2 is hinged to the upper plate 2. Specifically, a ball head is provided at the upper end of the main piston rod 3.2, and a ball socket that mates with the ball head is provided at the lower end of the upper plate 2. The main piston rod 3.2 is hinged to the upper plate 2 through the ball head. The beneficial effect of this ball head hinge is that when the ground vibrates, the lower plate 3 and the main piston rod 3.2 may tilt. The ball head hinge structure can ensure the reliability of the connection between the main piston rod 3.2 and the upper plate 2, and avoid the main piston rod 3.2 bearing lateral torque.

[0025] Four sub-cylinders 3.3 are arranged radially along the lower plate 3, with the sub-piston 3.4 as the boundary, the inner side being the oil chamber and the outer side being the air chamber. The oil chamber of the sub-cylinder 3.3 is connected to the oil chamber of the main cylinder 3.1 through an oil passage. A compression spring 3.5 and a screw plug 3.6 are installed in the air chamber of the sub-cylinder 3.3. The screw plug 3.6 is screwed into the air chamber of the sub-cylinder 3.3, and the compression spring 3.5 is located between the sub-piston 3.4 and the screw plug 3.6. The screw plug 3.6 has multiple damping air holes that communicate with the outside. When the main piston rod 3.2 of the main cylinder 3.1 moves upward, the sub-piston 3.4 in the sub-cylinder 3.3 moves inward under the action of the compression spring 3.5. When the main piston rod 3.2 of the main cylinder 3.1 moves downward, the sub-piston 3.4 in the sub-cylinder 3.3 moves outward against the elastic force of the compression spring 3.5.

[0026] Working Principle: The main hydraulic cylinder 3.1, sub-hydraulic cylinder 3.3, compression spring 3.5, screw plug 3.6, and disc spring assembly 4 together constitute a gas-liquid damping shock absorption system. When there is no ground vibration, the weight of the calcining furnace is distributed on the four support legs and shared by the main hydraulic cylinder 3.1 and the four disc spring assemblies 4. When the calcining furnace tilts due to an unstable center of gravity, the compression of the compression spring 3.5 can be adjusted by rotating the screw plug 3.6, which in turn pushes the sub-piston 3.4 to move the main piston rod 3.2 up and down, thereby achieving the purpose of leveling the calcining furnace.

[0027] See attached document Figure 5 When the ground vibrates upwards, the lower plate 3 moves upwards relative to the main piston rod 3.2, increasing the oil pressure in the oil chamber. Under the action of the oil pressure, the sub-piston 3.4 overcomes the elastic force of the compression spring 3.5 and moves outwards. The air in the air chamber of the sub-cylinder 3.3 is compressed by the sub-piston 3.4 and flows out from the damping air hole on the screw plug 3.6. During the flow, it plays a role in gas-liquid damping and buffering of the upward movement of the lower plate 3.

[0028] See attached document Figure 6When the ground vibrates downwards, the lower plate 3 moves downwards relative to the main piston rod 3.2, the oil pressure in the oil chamber decreases, the sub-piston 3.4 moves inwards under the action of the compression spring 3.5, the air pressure in the air chamber of the sub-cylinder 3.3 decreases, and outside air flows into the air chamber of the sub-cylinder 3.3 through the damping air hole on the screw plug 3.6. During the flow, it plays a role in gas-liquid damping and buffering of the downward movement of the lower plate 3.

[0029] The combined action of gas-liquid damping and the extension and retraction of disc spring assembly 4 can significantly reduce the vibration of the calcining furnace, preventing the furnace wire from breaking due to ground vibration.

[0030] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shock-absorbing support for a calcining furnace, characterized in that: The system includes a furnace body, an upper plate, a lower plate, and a disc spring assembly. The upper plate is fixed to the bottom of the furnace body, and the lower plate is fixed to the ground. The disc spring assembly connects the upper and lower plates. The lower plate has a main oil cylinder and multiple sub-oil cylinders. The main oil cylinder is vertically oriented, with an air chamber at the top and an oil chamber at the bottom. Its piston rod is hinged to the upper plate. The sub-oil cylinders also have air chambers and oil chambers. Their oil chambers are connected to the oil chambers of the main oil cylinders. A compression spring and a screw plug are installed in the air chamber of the sub-oil cylinders. The screw plug has multiple damping air holes that communicate with the outside.

2. The vibration damping support for a calcining furnace as described in claim 1, characterized in that: Anchor bolts are integrally connected to the lower part of the lower plate, and the lower plate is fixed to the ground by the pre-embedded anchor bolts.

3. The vibration damping support for a calcining furnace as described in claim 1, characterized in that: A ball head is provided at the upper end of the piston rod of the main cylinder, and a ball socket that mates with the ball head is provided at the lower end of the upper plate. The piston rod is hinged to the upper plate through the ball head.

4. The vibration damping support legs of a calcining furnace as described in claim 1, characterized in that: The disc spring assembly consists of a long bolt, a disc spring leaf, and a nut. Multiple disc spring assemblies are connected circumferentially between the upper and lower disc bodies.

5. The vibration damping support for a calcining furnace as described in claim 1, characterized in that: Multiple sub-cylinders are arranged radially along the lower plate, wherein the air chamber of the sub-cylinder faces the outside of the lower plate.

6. The vibration damping support of a calcining furnace as described in claim 1, characterized in that: The screw plug is screwed into the air chamber of the sub-cylinder, and the compression spring is placed between the piston of the sub-cylinder and the screw plug.

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