Safety protection device for edge operation of rotary table of heavy boring machine

Abstract

The invention belongs to the technical field of boring, and particularly relates to a heavy boring machine rotary table edge operation safety protection device. According to the technical scheme, the safety protection device for edge operation of the rotary table of the heavy boring machine comprises cambered plates connected to the four edges of the rotary table, the four cambered plates and the rotary table are spliced into a whole circle, a square cover plate is connected to a lower sliding table, an inscribed circle matched with the four cambered plates is arranged in the square cover plate, and a support is connected to the wall face, close to one side of a machine pit, of a workbench. The side, close to the front end of the machine pit, of the support is movably connected with a roller shutter type chain plate, the other side of the support is connected with a fixed cover plate, a movable cover plate is arranged between the fixed cover plate and the square cover plate, and the movable cover plate is connected with the support in a sliding mode. The invention provides a safety protection device for edge operation of a rotary table of a heavy boring machine. The safety protection device solves the problems of incomplete protection, inconvenience in use, difficulty in cleaning, insufficient bearing capacity and the like in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of boring, and in particular relates to a safety protection device for edge operation of a heavy-duty boring machine turntable. Background Art

[0002] At present, heavy-duty boring machines play an important role in the production of large parts, but the turntable edge operation attached to them has many safety hazards. In the existing technical solutions, the protection measures for turntable edge operation are relatively simple, with only basic protection (such as Figure 11 As shown in the figure), there are the following technical shortcomings in terms of personnel safety protection: 1. Incomplete protection: The existing protective devices cannot completely cover the edge area of ​​the turntable, leaving gaps, which puts the operator at risk of falling.

[0003] 2. Inconvenience: Turntables are typically shipped from the machine tool manufacturer in their original factory state, meeting only the functional requirements. They lack safety features for operators working on and around the turntable. Furthermore, scaffolding is required when workpieces extend beyond the tabletop, increasing operational difficulty and risk.

[0004] 3. Difficulty in cleaning: Existing protective measures have many gaps and leaks in the shielding and entry of iron chips, and there is no solution to the problem of difficulty in cleaning iron chips.

[0005] 4. Insufficient load-bearing capacity: Existing protective devices, including telescopic shields and accordion shields, are unable to bear heavy weights under large spans, especially turntables with a span of about 5000mm to 6000mm, which cannot meet the requirements of carrying the weight of personnel. Summary of the Invention

[0006] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a heavy-duty boring machine turntable edge operation safety protection device to solve the problems of incomplete protection, inconvenient use, difficult cleaning and insufficient carrying capacity in the prior art.

[0007] The technical solution adopted in the present invention is: A safety protection device for edge operations on a heavy-duty boring machine turntable comprises: arched plates connected to the four sides of the turntable, the four arched plates and the turntable being spliced ​​into a full circle; a square cover plate being connected to the lower slide; an inscribed circle cooperating with the four arched plates being arranged in the square cover plate; a bracket being connected to the wall of the workbench on the side of the machine pit; a side of the bracket close to the front end of the machine pit being connected to a movably connected rolling curtain chain plate; a fixed cover plate being connected to the other side of the bracket; a movable cover plate being arranged between the fixed cover plate and the square cover plate; and the movable cover plate being slidably connected to the bracket.

[0008] The dynamic circular table formed by splicing four arched plates of the present invention and the combined nested platform formed by the square cover plate achieve a seamless closure of the span area and a fully flat tabletop operating area. A rolling chain plate is provided at the front end of the pit, and a movable cover plate and a fixed cover plate are provided at the rear end of the pit, so that the front and rear ends of the pit are effectively protected. The arched plate can rotate with the turntable, the square cover plate can move with the lower slide, and both the rolling chain plate and the movable cover plate can move on the bracket, so that the present invention can achieve continuous and effective edge protection in any working posture of the turntable.

[0009] As a preferred embodiment of this invention, steps are installed on the work platforms on both sides and the rear of the pit. These steps are removable and constructed from a steel frame covered in aluminum alloy patterned plate. The top of the steps is flush with a rolling chain plate, allowing operators to seamlessly transition from machine tool to turntable and back to machine tool. From any other area, the three-stage steps allow operators to freely access the turntable work area. This safety protection solution for working near the turntable's edges reduces the risk of injuries from falls to virtually zero.

[0010] As a preferred embodiment of the present invention, the upper surface of the arched plate is lower than the bottom surface of the T-slot on the turntable surface. The turntable's circumcircle is modified using 5mm-thick patterned steel plate, formed into four arched plates that are spliced ​​to the four sides of the turntable. The upper surface of the arched plates is lower than the bottom surface of the T-slot on the turntable surface to facilitate the removal of iron filings. Angle steel brackets are evenly arranged below the arched plates. Bolts secure the angle steel brackets and arched plates to the four sides of the turntable. These brackets rotate with the turntable, forming a circular platform.

[0011] As a preferred embodiment of the present invention, the outer diameter of the arched plate is larger than the inscribed circle diameter of the square cover plate, and the top surface of the arched plate is higher than the top surface of the square cover plate. The square cover plate is supported by a support frame constructed of rectangular steel pipes. The lower layer of the support frame is bolted to the lower slide below the turntable, allowing the entire square cover plate to move forward and backward with the slide. The outer diameter of the arched plates surrounding the turntable is larger than the inscribed circle diameter of the square cover plate. The arched plates are slightly higher than the surface of the square cover plate, with a small gap to prevent the ingress of iron filings.

[0012] As a preferred embodiment of the present invention, the support comprises a rectangular tube, which comprises a horizontal section, an arc section and a vertical section, wherein the vertical section is located at the front end of the pit. The rolling curtain chain plate can move on the rectangular tube to cover the front end of the pit.

[0013] As a preferred embodiment of the present invention, the upper surface of the rectangular tube is lower than the top surface of the square cover. The span between the two side brackets is slightly larger than the width of the two sides of the square cover, and the height is slightly lower than the square cover.

[0014] As a preferred solution of the present invention, the rolling curtain chain plate includes a chain overlapped on the bracket, and the chain is connected to the chain plate.

[0015] As a preferred embodiment of the present invention, the chain plates have a C-shaped cross-section, with two chain plates welded back-to-back to form an I-shaped chain plate, with the lower flange of the I-shaped chain plate narrowing. This special cross-section chain plate, welded back-to-back from specially crafted C-shaped stainless steel plates, is wide at the top and narrow at the bottom. This allows the chain plates to bend and compress when hung and stored, resolving the incompatibility between load-bearing and storage requirements of traditional guardrails.

[0016] As a preferred solution of the present invention, the gaps between adjacent I-shaped chain plates are covered with gap shielding plates, which are connected to the chains.

[0017] As a preferred embodiment of the present invention, support wheels are installed at the bottom of the movable cover near one end of the fixed cover. The support wheels contact the surface of the fixed cover, providing support in the middle portion of the movable cover, where the bending strength is weakest. Due to this structure and overlapping method of the movable and fixed covers, the nearly 6-meter wide cover has sufficient bending strength at any point, providing sufficient support for personnel working on it.

[0018] The beneficial effects of the present invention are: The dynamic circular table formed by splicing four arched plates of the present invention and the combined nested platform formed by the square cover plate achieve a seamless closure of the span area and a fully flat tabletop operating area. A rolling chain plate is provided at the front end of the pit, and a movable cover plate and a fixed cover plate are provided at the rear end of the pit, so that the front and rear ends of the pit are effectively protected. The arched plate can rotate with the turntable, the square cover plate can move with the lower slide, and both the rolling chain plate and the movable cover plate can move on the bracket, so that the present invention can achieve continuous and effective edge protection in any working posture of the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a top view of the present invention; Figure 3 yes Figure 2 Cross-sectional view at AA in the middle; Figure 4 yes Figure 2 Cross-sectional view at the middle BB; Figure 5 This is a partial structural diagram of the rolling curtain chain plate; Figure 6 It is a cross-sectional view of the structure of the rolling curtain chain plate; Figure 7 It is a partial structural diagram of the present invention; Figure 8 This is the assembly drawing of the turntable and bow plate; Figure 9 It is a structural diagram of the square cover plate and the lower slide; Figure 10is a schematic diagram of the structure of the bracket; Figure 11 This is a partial structural diagram of a heavy-duty boring machine.

[0020] In the figure: 1-bow plate; 2-square cover plate; 3-bracket; 4-rolling chain plate; 5-fixed cover plate; 6-movable cover plate; 7-ladder platform; 8-boring machine foundation; 11-angle steel bracket; 21-inscribed circle; 22-support frame; 31-rectangular tube; 41-chain plate; 42-inner connecting plate; 43-outer connecting plate; 44-bearing roller; 45-gap cover plate; 81-machine pit; 82-down slide; 83-turntable; 84-workbench; 85-platform. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features therein may be combined with each other unless there is a conflict.

[0023] like Figure 11 As shown, the heavy-duty boring machine includes a boring machine foundation, a lower slide is provided on the boring machine foundation, a turntable is installed on the lower slide, machine pits are provided on both sides of the lower slide, a workbench is provided on the side of the pit away from the lower slide and on the rear side of the pit, and a platform is provided on the pit.

[0024] like Figure 1 and Figure 7 As shown, the safety protection device for edge operations of the turntable of a heavy-duty boring machine in this embodiment includes bow plates connected to the four sides of the turntable, the four bow plates and the turntable are spliced ​​into a whole circle, a square cover plate is connected to the lower slide, an inscribed circle matching the four bow plates is arranged in the square cover plate, a bracket is connected to the wall on the side of the workbench close to the machine pit, the side of the bracket close to the front end of the machine pit is connected to a movably connected roller chain plate, the other side of the bracket is connected to a fixed cover plate, a movable cover plate is arranged between the fixed cover plate and the square cover plate, and the movable cover plate is slidably connected to the bracket.

[0025] The dynamic circular table formed by splicing four arched plates of the present invention and the combined nested platform formed by the square cover plate achieve a seamless closure of the span area and a fully flat tabletop operating area. A rolling chain plate is provided at the front end of the pit, and a movable cover plate and a fixed cover plate are provided at the rear end of the pit, so that the front and rear ends of the pit are effectively protected. The arched plate can rotate with the turntable, the square cover plate can move with the lower slide, and both the rolling chain plate and the movable cover plate can move on the bracket, so that the present invention can achieve continuous and effective edge protection in any working posture of the turntable.

[0026] Specifically, if Figure 8 As shown, the turntable's circumscribed circle was modified using 5mm-thick patterned steel plates, fashioned into four arched plates that were attached to the turntable's four sides. The upper surface of the arched plates is lower than the bottom of the T-slots on the turntable surface, facilitating the removal of scrap metal. Angle steel brackets are evenly spaced beneath the arched plates. Bolts secure the angle steel brackets and arched plates to the turntable's four sides, allowing them to rotate with the turntable, forming a circular platform.

[0027] like Figure 9 As shown, the circular platform is surrounded by a square cover plate made of multiple patterned steel plates, each with an inscribed circle. The square cover plate is supported by a support frame constructed from rectangular steel pipes. The lower layer of the support frame is bolted to the lower slide below the turntable, allowing the entire square cover plate to move forward and backward with the slide. The outer diameter of the arched plates surrounding the turntable is larger than the diameter of the inscribed circle of the square cover plate. These arched plates are slightly higher than the surface of the square cover plate, with a small gap to prevent the ingress of iron chips.

[0028] like Figure 10 As shown, adjacent to both sides of the square cover are upright frame-type brackets welded together from 50mm rectangular steel pipes, which are installed on the horizontal walls of the pit. The rectangular tube above the bracket extends from the front end of the pit to the rear end. The span between the brackets on both sides is slightly larger than the width of the square cover on both sides, and the height is slightly lower than the square cover. The rectangular tube is the supporting slide rail for the rolling curtain chain plate at the front end of the pit and the movable cover plate at the rear end. The rectangular tube includes a horizontal section, a circular arc section, and a vertical section, and the vertical section is located at the front end of the pit. The rolling curtain chain plate can be moved on the rectangular tube to cover the front end of the pit.

[0029] Specifically, if Figures 4 to 6As shown, the rolling curtain chain plate comprises a chain lapped onto a bracket, with a chain plate attached to the chain. The front end of a square cover plate is connected to the rolling curtain chain plate, with the upper surface of the rolling curtain chain plate flush with the flat surface of the square cover plate. Each chain plate is connected at both ends by a connecting plate. The connecting plate comprises an inner connecting plate and an outer connecting plate. The inner connecting plate is welded to the end face of the chain plate, while the outer connecting plate is welded to the inner connecting plate via two ribs. The connecting plates have pin holes at both ends. The pins pass through the pin holes of the front and rear overlapping connecting plates. Bearing rollers are then fitted around the outer diameter of the bearing rollers, with an outer diameter greater than the height of the connecting plates. The bearing rollers are mounted on the rectangular tube surfaces of the brackets on both sides and can roll along the rectangular tube surfaces. The pins and the connected connecting plates form a chain. Each chain plate is then connected by welding to form a chain plate row. The chain plate row then covers the gaps and height differences from the front end of the turntable to the front end of the pit.

[0030] Each chain plate is constructed from 2mm-thick stainless steel sheet metal, bent into a straight-edged C-shaped cross-section. Two C-shaped plates are then welded back-to-back to form an I-shaped chain plate. The gaps between adjacent I-shaped chain plates are covered with gap shields attached to the chain. To allow I-shaped chain plates of a certain height to bend inward, the lower flanges are narrowed, creating an I-shaped cross-section that is wider at the top and narrower at the bottom. This ensures that the nearly 6-meter-wide rolling chain plate array possesses a low weight and sufficient bending strength, providing adequate support and safety for personnel working on it. Furthermore, this bent chain plate structure allows the turntable to bend and hang vertically in the lower space when it reaches the front end, closest to the operating table.

[0031] The special cross-section chain plates are made of specially made C-shaped stainless steel plates welded back to back. The structure is wide at the top and narrow at the bottom, which allows the chain plates to bend and compress the space when hanging for storage, solving the contradiction that traditional guards cannot take into account both load-bearing and storage.

[0032] like Figure 4 As shown, the rear end of the square cover, extending all the way to the gap and height difference at the rear end of the pit, is completely covered by two rectangular covers. These covers are constructed from a frame welded from rectangular steel tubes and covered with aluminum alloy patterned plate. Attached to the square cover is a movable cover, which can move forward and backward with it. Overlapping the rear end of the movable cover is a fixed cover, its sides secured to brackets on either side. To ensure sufficient compressive strength in the center of the fixed cover, two rectangular tubes are used to support the center of the fixed cover at an angle, with their other ends supported at the base of the brackets on either side. Support wheels are located at the bottom center of the rear end of the movable cover. These wheels contact the surface of the fixed cover, providing support in the middle section of the movable cover, where bending strength is weakest. This structure and overlapping connection between the movable and fixed covers ensures sufficient bending strength at all points across the nearly 6-meter-wide cover, providing ample support for personnel working on it.

[0033] A square cover, rolling chain plate, movable cover plate, fixed cover plate, and a circular platform that extends nearly 785mm above the ground together form a relatively flat and large work platform. On either side and at the rear of the platform, a three-stage ladder platform constructed of a steel frame and covered with a full-length, removable aluminum alloy checkered plate is installed. The top of the ladder platform meets the edge of the rolling chain plate, allowing the operator to seamlessly transition from machine tool to turntable and back to machine tool. From any other area, the three-stage ladder platform allows for free access to the turntable work area. This safety protection solution for working near the turntable edge reduces the risk of falling injuries to almost zero.

[0034] The present invention has the following advantages: Comprehensive protection: By changing the turntable to a circular shape, the gaps on the four sides are eliminated, ensuring that there are no dead angles on the edge of the turntable, and completely eliminating the risk of operators falling.

[0035] Easy to use: The design of the front rolling chain plate and the rear movable cover makes it easier for operators to get on and off the turntable, reducing the difficulty of operation and the risk of falling.

[0036] Easy to clean: The modular design and rolling chain plate structure make it difficult for iron chips to fall into the gaps, making cleaning more convenient and reducing maintenance costs and time.

[0037] Strong carrying capacity: The chain plate adopts the stainless steel thin plate forming combination process to ensure sufficient bending strength, which can carry the weight of a large span and meet the needs of personnel.

[0038] Lightweight design: The chain plate adopts the bending and welding process of two thin plates, which reduces the dead weight and manufacturing difficulty, ensuring that the weight of the entire chain is controlled within 4450N without affecting the movement and load of the turntable.

[0039] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention falls within the scope of protection of the present invention.

Claims

1. A heavy-duty boring machine turntable edge operation safety protection device, characterized by: It includes bow-shaped plates connected to the four sides of the turntable, the four bow-shaped plates and the turntable are spliced ​​into a whole circle, a square cover plate is connected to the lower slide, an inscribed circle is provided in the square cover plate to match the four bow-shaped plates, a bracket is connected to the wall on the side of the workbench close to the machine pit, the bracket is connected to a movable roller chain plate near the front end of the machine pit, the other side of the bracket is connected to a fixed cover plate, a movable cover plate is provided between the fixed cover plate and the square cover plate, and the movable cover plate is slidably connected to the bracket.

2. A heavy-duty boring machine turntable edge operation safety protection device according to claim 1, characterized in that: There are ladder platforms on both sides and the rear of the pit.

3. The heavy-duty boring machine turntable edge operation safety protection device according to claim 1 is characterized in that: The upper plane of the arched plate is lower than the bottom surface of the T-slot on the turntable surface.

4. The heavy-duty boring machine turntable edge operation safety protection device according to claim 1 is characterized in that: The outer diameter of the arched plate is larger than the inscribed circle diameter of the square cover plate, and the top surface of the arched plate is higher than the top surface of the square cover plate.

5. The heavy-duty boring machine turntable edge operation safety protection device according to claim 1 is characterized in that: The bracket includes a rectangular tube, which includes a horizontal section, an arc section and a vertical section, and the vertical section is located at the front end of the machine pit.

6. The heavy-duty boring machine turntable edge operation safety protection device according to claim 5, characterized in that: The upper surface of the rectangular tube is lower than the top surface of the square cover plate.

7. The heavy-duty boring machine turntable edge operation safety protection device according to claim 1 is characterized in that: The rolling curtain chain plate comprises a chain overlapped on a bracket, and a chain plate is connected to the chain.

8. The heavy-duty boring machine turntable edge operation safety protection device according to claim 7, characterized in that: The cross-section of the chain plate is C-shaped. Two chain plates are welded back to back to form an I-shaped chain plate, and the lower flange plate of the I-shaped chain plate is narrowed.

9. The heavy-duty boring machine turntable edge operation safety protection device according to claim 7, characterized in that: The gaps between adjacent I-shaped chain plates are covered with gap-shielding plates, which are connected to the chains.

10. A heavy-duty boring machine turntable edge operation safety protection device according to any one of claims 1 to 9, characterized in that: A supporting wheel is provided at the bottom of the movable cover plate close to one end of the fixed cover plate, and the supporting wheel is in contact with the surface of the fixed cover plate.

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