Semi-underground furnace charging lifting platform and foot pressing prevention device

Abstract

The utility model discloses a semi-underground furnace charging lifting platform and a foot pressing prevention device, and belongs to the technical field of equipment safety protection. Comprising a lifting table, a bottom frame and a lead screw driving assembly, wherein the lifting table and the bottom frame are oppositely arranged in parallel, and a first hinge frame and a second hinge frame which are hinged to each other are arranged between the lifting table and the bottom frame; wherein one end of the first gallows is hinged to the lifting platform, and the other end is slidably connected to the underframe; one end of the second gallows is hinged to the underframe, and the other end is slidably connected to the lifting platform; the lead screw driving assembly comprises a servo motor and a lead screw assembly, the lead screw assembly comprises a driving lead screw connected with the servo motor and an external member arranged on the first gallows, and the external member is in threaded connection with the driving lead screw; the utility model aims to overcome the defects in the prior art, and provides the semi-underground furnace charging lifting platform and the foot pressing prevention device, so that the lifting platform can be prevented from accidentally falling in an emergency, and operators are protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment safety protection, and particularly relates to a semi-underground furnace loading lifting platform and an anti-pressure foot device. Background Art

[0002] Due to special needs, the semi-underground lifting platform is parallel to the ground after descending to the lowest point. The four sides of the pit form a shear-like shape with the table surface. Once the operator puts his feet in, he will be crushed due to equipment failure or operating errors. Currently, photoelectric sensing or limit switch control methods are mostly used. The disadvantage is that when the power is off or the hydraulic oil pipe suddenly bursts, the lifting platform cannot be controlled and the protective function is lost due to the instantaneous descent of the lifting platform.

[0003] Therefore, there is an urgent need for a semi-underground furnace loading lifting platform and a foot-pressing prevention device that is stable in use and can prevent the lifting platform from pressing the soles of the operator's feet. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide a semi-underground furnace loading lifting platform and an anti-foot pressure device, which can prevent the lifting platform from accidentally falling when an emergency occurs, thereby protecting operators.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a semi-underground furnace loading lifting platform, comprising a lifting platform and a base frame arranged relatively and parallel to each other, and a screw drive assembly, a set of mutually hinged first gallows and second gallows are arranged between the lifting platform and the base frame;

[0006] Wherein, one end of the first gallows is hinged to the lifting platform, and the other end is slidably connected to the base frame; one end of the second gallows is hinged to the base frame, and the other end is slidably connected to the lifting platform;

[0007] The screw drive assembly includes a servo motor and a screw assembly. The screw assembly includes a driving screw connected to the servo motor and a kit arranged on the first gallows. The kit is threadedly connected to the driving screw.

[0008] Optionally, bearings are provided at one end of the first gallows that is slidably connected to the base frame and at one end of the second gallows that is slidably connected to the lifting platform.

[0009] Optionally, one end of the second gallows can be slidably connected to the bottom side of the lifting platform via a linear guide rail.

[0010] An anti-foot pressure device, comprising a protective cover and a plurality of drive components capable of driving the protective cover to be pulled up from a pit to the outside, and a semi-underground furnace loading lifting platform as described in any of the above items, wherein the top of the protective cover can abut against the bottom side of the lifting platform, and the outer periphery of the protective cover is flush with the edge of the lifting platform;

[0011] Wherein, the driving assembly includes a plurality of groups of symmetrically arranged columns, and each of the columns is provided with a tension spring that can be suspended at the bottom of the inner side of the protective cover.

[0012] Optionally, a plurality of groups of circular through holes are arranged on the protective cover in the vertical direction, and a limiting rod capable of penetrating into the circular through holes is arranged on the column.

[0013] Optionally, the top of the protective cover is provided with an inwardly bent edge.

[0014] Optionally, the outer periphery of the limiting rod is threadedly connected with a plurality of nuts that can be clamped on both inner and outer sides of the column.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) The servo motor drives the lead screw to rotate, and then drives one end of the first gallows to move horizontally to one side through the kit, so that the vertical lifting distance of the lifting platform can be accurately controlled. In addition, when encountering emergencies such as power failure, the screw-connected kit and the driving lead screw can effectively prevent the lifting platform from falling instantly;

[0017] (2) The protective cover can be completely hidden in the pit where the semi-underground furnace loading lifting platform is installed. When the lifting platform descends to the same level as the ground, the lifting platform can also press the protective cover into the pit. At this time, the tension spring is stretched and accumulates energy. When the lifting platform is lifted vertically, the tension spring releases the accumulated energy, providing the protective cover with kinetic energy for vertical ascent, thereby causing the protective cover to rise above the ground along the edge of the pit. At the same time, the outer periphery of the protective cover is flush with the edge of the lifting platform, thereby preventing the shear effect between the lifting platform and the edge of the pit, which can effectively prevent the operator's feet from extending into the area where the pit is located, thereby playing an effective protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of a semi-underground furnace loading and lifting platform in a preferred embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a preferred embodiment of the utility model in which a protective cover is arranged around the outer periphery of a semi-underground furnace loading and lifting platform;

[0021] Figure 3 In the preferred embodiment of the utility model Figure 2 A schematic diagram of a top view structure;

[0022] Figure 4 In the preferred embodiment of the utility model Figure 3 Schematic diagram of the cross-sectional structure at AA;

[0023] Figure 5 It is a schematic diagram of the structure of the protective cover, the vertical rod and the tension spring in the preferred embodiment of the utility model;

[0024] Figure 6 It is a structural schematic diagram of a semi-underground furnace loading lifting platform in a preferred embodiment of the utility model when an anti-pressure foot device is installed and buried in a pit;

[0025] Among them, 1. lifting platform; 2. base frame; 3. first gallows; 4. second gallows; 5. servo motor; 6. driving screw; 7. kit; 8. bearing; 9. protective cover; 901, circular through hole; 902, folded edge; 10. column; 11. tension spring; 12. limit rod; 13. nut. DETAILED DESCRIPTION

[0026] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in this embodiment, the directional indication is only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. Embodiment 1

[0028] like Figure 1-Figure 6As shown, a semi-underground furnace loading lifting platform comprises a lifting platform 1 and a base frame 2 which are arranged relatively and parallel to each other, and a screw drive assembly, wherein a group of mutually hinged first gallows 3 and second gallows 4 are arranged between the lifting platform 1 and the base frame 2; wherein one end of the first gallows 3 is hinged to the lifting platform 1, and the other end is slidably connected to the base frame 2; one end of the second gallows 4 is hinged to the base frame 2, and the other end is slidably connected to the lifting platform 1; the screw drive assembly comprises a servo motor 5 and a screw assembly, wherein the screw assembly comprises a driving screw 6 connected to the servo motor 5, and a kit 7 arranged on the first gallows 3, and the kit 7 is threadedly connected to the driving screw 6.

[0029] As described above, the screw drive assembly can increase or decrease the angle between the first gallows 3 and the second gallows 4 by driving the first gallows 3 to slide in the horizontal direction, thereby driving the lifting platform 1 to rise and fall vertically. At the same time, the screw 6 is driven to rotate by the servo motor 5, and then the end of the first gallows 3 is driven to move horizontally to one side by the kit 7, so that the vertical lifting distance of the lifting platform 1 can be accurately controlled. In addition, when encountering emergencies such as power failure, the screw-connected kit 7 and the driving screw 6 can effectively prevent the lifting platform 1 from falling instantly.

[0030] The above, such as Figure 1 As shown, a bearing 8 is provided at one end of the first gallows 3 slidably connected to the base frame 2 and at one end of the second gallows 4 slidably connected to the lifting platform 1 to reduce friction between the first gallows 3 and the base frame 2 and between the second gallows 4 and the lifting platform 1.

[0031] Furthermore, in order to prevent the lifting platform 1 from tilting due to uneven material stacking, one end of the second gallows 4 can be slidably connected to the bottom side of the lifting platform 1 through a linear guide rail. Specifically, the linear guide rail is composed of a slider and a guide rail, the slider can be hinged at the end of the second hinge, the guide rail is arranged at the bottom of the lifting platform 1 in the horizontal direction, and the slider is slidably connected to the guide rail, but the second gallows 4 can pull the lifting platform 1 and the base frame 2 at the same time to prevent the lifting platform 1 from tipping over. Embodiment 2

[0032] like Figure 2-Figure 6 As shown, an anti-foot pressure device includes a protective cover 9 and several groups of driving components that can drive the protective cover 9 to be pulled up from the pit to the outside and any of the aforementioned semi-underground furnace loading lifting platforms, the top of the protective cover 9 can be abutted against the bottom side of the lifting platform 1, and the outer periphery of the protective cover 9 is flush with the edge of the lifting platform 1; wherein the driving component includes several groups of symmetrically arranged columns 10, each column 10 is provided with a tension spring 11 that can be suspended at the bottom of the inner side of the protective cover 9.

[0033] Specifically, the protective cover 9 can be completely hidden in the pit where a semi-underground furnace loading lifting platform is installed. When the lifting platform 1 is lowered to be flush with the ground, the lifting platform 1 can also press the protective cover 9 into the pit. At this time, the tension spring 11 is stretched and accumulates energy. When the lifting platform 1 is lifted vertically, the tension spring 11 releases the accumulated energy, providing the protective cover 9 with kinetic energy for vertical ascent, thereby causing the protective cover 9 to rise above the ground along the edge of the pit. At the same time, the outer periphery of the protective cover 9 is flush with the edge of the lifting platform 1, thereby preventing the shear effect from being formed between the lifting platform 1 and the edge of the pit, which can effectively prevent the operator's feet from extending into the range of the pit, thereby playing an effective protective role. At the same time, the structure in this technical solution does not need to be driven by electric energy, so even in the event of a power outage, it will not affect its normal use.

[0034] As described above, the protective cover 9 can always remain in contact with the bottom side of the lifting platform 1, and can also remain stationary after rising to a certain height. Figure 2 , Figure 4 , Figure 5 As shown, the protective cover 9 is provided with a plurality of groups of circular through holes 901 in the vertical direction, and the column 10 is provided with a limit rod 12 which can penetrate into the circular through hole 901, and the limit rod 12 can slide along the edge of the circular through hole 901, so as to limit the rising distance of the protective cover 9. In the present technical scheme, it is inevitable that when the lifting platform 1 is lifted to a certain height, the operator's feet are very likely to rest on the edge of the protective cover 9, and at this time, the edge of the top of the protective cover 9 will form a certain shearing effect with the edge of the lifting platform 1, but under the action of the tension spring 11, the protective cover 9 is in a floating state at this time, and when the lifting platform 1 is pressed down to the operator's feet, it will not cause an effective shearing effect on the operator's feet, and at this time, the weak pressure of the lifting platform 1 on the feet can effectively warn the operator to move his feet away to avoid safety accidents and ensure the safety of the operator.

[0035] In the present technical solution, in order to reduce the gap between the protective cover 9 and the pit, the size of the protective cover 9 matches the size of the pit, the limiting rod 12 is passed through the column 10, and the outer peripheral thread of the limiting rod 12 is connected with a plurality of nuts 13 that can be clamped on the inner and outer sides of the column 10 for installation.

[0036] Further, such as Figure 4 , Figure 5 As shown, the top of the protective cover 9 is provided with an inwardly bent edge 902, which increases the contact area between the bottom side of the lifting platform 1 and the protective cover 9, and prevents the protective cover 9 from being deformed by pressure. At the same time, it can also prevent the edge of the protective cover 9 from scratching the operator.

[0037] Working principle: The servo motor 5 drives the lead screw 6 to rotate, and then the kit 7 drives one end of the first gallows 3 to move horizontally to one side, so that the vertical lifting distance of the lifting platform 1 can be accurately controlled, and when encountering emergencies such as power failure, the screw-connected kit 7 and the driving lead screw 6 can effectively prevent the lifting platform 1 from falling instantly.

[0038] At the same time, an anti-foot pressure device is used so that the protective cover 9 can be completely hidden in the pit where the semi-underground furnace loading lifting platform is installed. When the lifting platform 1 descends to be flush with the ground, the lifting platform 1 can also press the protective cover 9 into the pit. At this time, the tension spring 11 is stretched and accumulates energy. When the lifting platform 1 is lifted vertically, the tension spring 11 releases the accumulated energy, providing the protective cover 9 with kinetic energy for vertical ascent, thereby causing the protective cover 9 to rise above the ground along the edge of the pit. At the same time, the outer periphery of the protective cover 9 is flush with the edge of the lifting platform 1, thereby preventing the shear effect from being formed between the lifting platform 1 and the edge of the pit, which can effectively prevent the operator's feet from extending into the range of the pit, thereby playing an effective protective role.

[0039] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A semi-underground furnace loading and lifting platform, characterized in that: It comprises a lifting platform (1) and a base frame (2) which are arranged oppositely and in parallel, and a screw drive assembly, wherein a group of mutually hinged first gallows (3) and second gallows (4) are arranged between the lifting platform (1) and the base frame (2); One end of the first gallows (3) is hinged to the lifting platform (1), and the other end is slidably connected to the base frame (2); one end of the second gallows (4) is hinged to the base frame (2), and the other end is slidably connected to the lifting platform (1); The screw drive assembly comprises a servo motor (5) and a screw assembly, wherein the screw assembly comprises a driving screw (6) connected to the servo motor (5) and a sleeve (7) arranged on the first gallows (3), wherein the sleeve (7) is threadedly connected to the driving screw (6).

2. The semi-underground furnace loading and lifting platform according to claim 1 is characterized in that: A bearing (8) is provided at one end of the first gallows (3) slidably connected to the base frame (2) and at one end of the second gallows (4) slidably connected to the lifting platform (1).

3. The semi-underground furnace loading and lifting platform according to claim 1 is characterized in that: One end of the second gallows (4) can be slidably connected to the bottom side of the lifting platform (1) via a linear guide rail.

4. A foot pressure prevention device, characterized in that: It comprises a protective cover (9) and a plurality of drive components capable of driving the protective cover (9) to be pulled up from the pit to the outside, and a semi-underground furnace loading lifting platform as claimed in any one of claims 1 to 3, wherein the top of the protective cover (9) can abut against the bottom side of the lifting platform (1), and the outer periphery of the protective cover (9) is flush with the edge of the lifting platform (1); The driving assembly comprises a plurality of groups of symmetrically arranged columns (10), each of the columns (10) being provided with a tension spring (11) capable of being suspended at the bottom of the inner side of the protective cover (9).

5. The anti-foot pressure device according to claim 4, characterized in that: The protective cover (9) is provided with a plurality of groups of circular through holes (901) in the vertical direction, and the upright column (10) is provided with a limiting rod (12) capable of penetrating into the circular through holes (901).

6. The anti-foot pressure device according to claim 4, characterized in that: The top of the protective cover (9) is provided with an inwardly bent edge (902).

7. The anti-foot pressure device according to claim 5, characterized in that: The outer periphery of the limiting rod (12) is threadedly connected to a plurality of nuts (13) that can be clamped on both inner and outer sides of the column (10).

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