Indoor suspended ceiling punching device

Abstract

The utility model discloses an indoor suspended ceiling punching device, which relates to the technical field of suspended ceiling punching, and comprises a base, a mounting pipe frame is fixedly embedded on the base, and a drilling machine for punching an indoor suspended ceiling and a jacking assembly for driving the drilling machine to lift are erected on the mounting pipe frame; the shell, close to a drill bit, of the drilling machine is fixedly sleeved with an elastic organ-shaped fold sleeve used for collecting dust, the end, provided with the drill bit, of the shell of the drilling machine is provided with a visual assembly, the bottom of the drilling machine is fixedly provided with a mounting plate, and the two sides of the mounting plate are provided with an atomization assembly and a dust collection assembly respectively. According to the indoor suspended ceiling punching device, dust pollution is reduced, meanwhile, it is ensured that an operator does not need to climb to punch holes and does not need to lift a drilling machine manually, and therefore the problem that punching lateral deviation occurs due to the fact that the arm of the operator is aching when the operator lifts the electric drilling machine highly is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of suspended ceiling punching, in particular to an indoor suspended ceiling punching device. Background Art

[0002] Indoor ceiling is an important part of interior decoration. It refers to the decoration of the top of the house with specific materials, with the purpose of showing unique beauty and better protecting the ceiling. There are many types of ceilings, including but not limited to the following: Flat ceiling: the most common form of ceiling, simple and generous, suitable for most indoor spaces. The main function is to better layout indoor lighting, ventilation system, etc., and it can also hide the irregularities or defects of the roof; Curved ceiling: It adds beauty to the space with smooth lines and unique shapes, and is suitable for interior decoration design that pursues fashion and personality. Different spatial visual effects can be created through different curvature designs; Suspended ceiling: A ceiling form formed by hanging various panels (such as metal, glass, wood, etc.) on the structure. This type of ceiling gives people a refreshing feeling and is usually used in some relatively large spaces, such as movie theaters, concert halls, etc.; Gypsum board ceiling: One of the most common ceiling materials, with the characteristics of light weight, easy installation and diverse shapes. It can be processed according to needs to create ceilings of various shapes and styles, suitable for various spaces; integrated ceiling: it integrates multiple functions such as lighting, air conditioning and ventilation, and sound system, which is convenient and practical. It usually uses materials such as aluminum gussets and PVC boards, which are easy to install, easy to clean and maintain, and are suitable for spaces that need to be cleaned frequently, such as kitchens and bathrooms.

[0003] The existing patent "CN 220482151 U" discloses an indoor drilling device, including a handheld electric drill. When drilling holes indoors, the existing equipment needs to manually lift the electric drill before drilling holes on the wall. It is particularly laborious to drill holes on the roof, and more holes are drilled on the roof when the roof is suspended. Long-term drilling can easily cause soreness in the workers' arms, resulting in safety problems such as drilling deviation or loose grip of the electric drill due to insufficient strength when drilling later. At the same time, the dust generated during drilling will also greatly pollute the indoor environment, making the working environment of the workers extremely poor.

[0004] Therefore, it is necessary to provide a new indoor ceiling punching device to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the utility model provides an indoor ceiling punching device, which solves the problems of laborious manual lifting and indoor environment pollution during the punching operation.

[0006] The indoor ceiling punching device provided by the utility model comprises a base, on which a mounting pipe rack is fixedly embedded, and on which a drilling rig for punching holes in the indoor ceiling and a jacking assembly for driving the drilling rig to rise and fall are mounted;

[0007] The fixed sleeve on the housing of the drilling rig close to the drill bit is provided with an elastic accordion-shaped pleated sleeve for collecting dust, and the housing end of the drilling rig on which the drill bit is mounted is provided with a visual component, a mounting plate is fixedly installed at the bottom of the drilling rig, and an atomization component and a dust collection component are respectively provided on both sides of the mounting plate;

[0008] Wherein, the visual component comprises a miniature probe, the miniature probe is fixedly embedded in the housing end of the drill rig for mounting the drill bit, and the miniature probe is provided with a cleaning plate for cleaning the probe mirror surface on the miniature probe;

[0009] Wherein, the atomizing assembly comprises an annular tube, the annular tube is arranged on an elastic accordion-shaped pleated sleeve, and a plurality of annularly distributed atomizing nozzles are fixedly mounted on the annular tube, and the annular tube is connected to a drain port of a water storage tank fixedly mounted on a mounting plate through a liquid guide tube;

[0010] Wherein, the dust collecting assembly comprises a dust collecting box, the dust collecting box is fixedly mounted on the mounting plate, and a dust guiding pipe is mounted on the dust collecting box, and the dust guiding pipe is fixedly connected to a through opening opened at the bottom of the elastic accordion-shaped pleated sleeve.

[0011] Preferably, a micro motor is fixedly mounted on the shell on the side of the micro probe, and the output end of the micro motor is fixedly connected to the connecting end of the cleaning plate, bristles are fixedly embedded on the bottom of the cleaning plate, and the bristles are against the probe mirror on the micro probe.

[0012] Preferably, an outer ring is fixedly engaged on the top of the elastic accordion-shaped pleated sleeve.

[0013] Preferably, the inner tube wall of the annular tube is fixedly connected to the outer ring, and the atomizing nozzle on the annular tube is located on the outer tube wall on the upper side of the annular tube.

[0014] Preferably, the dust collecting box is equipped with an induced draft fan and a dust collecting drawer which are distributed up and down, the air inlet of the induced draft fan is connected to the dust guiding pipe, and the dust exhaust port of the induced draft fan faces the dust collecting drawer.

[0015] Preferably, the jacking assembly includes a sleeve frame, the corners of which are respectively fixedly mounted on each tube body of the installation pipe rack, and a hydraulic cylinder A is fixedly mounted on the sleeve frame, the output end of the hydraulic cylinder A faces upward and is fixedly mounted with a jacking plate, and a plurality of sliding rods are fixedly mounted on the lower surface of the jacking plate, the plurality of sliding rods are respectively inserted into the hollow cavities opened on each tube body of the installation pipe rack and are slidably connected with the hollow cavities, and the mounting plate is fixedly mounted on the upper surface of the sleeve frame.

[0016] Preferably, a stabilizing frame assembly is also installed on the mounting pipe rack, and the stabilizing frame assembly is arranged below the jacking assembly, the stabilizing frame assembly includes a fixed frame, the corners of the fixed frame are respectively fixedly mounted on each pipe body of the mounting pipe rack, and a hydraulic cylinder B is fixedly installed on the fixed frame, the output end of the hydraulic cylinder B faces downward and passes through the base, and a top support plate is fixedly installed on the output end of the hydraulic cylinder B.

[0017] Preferably, a plurality of limiting sliding rods are fixedly mounted on the upper surface of the top support plate, and the plurality of limiting sliding rods respectively pass through the sliding holes provided in the base and are slidably connected with the sliding holes.

[0018] Preferably, a cavity for accommodating the top support plate is provided at the bottom of the base, and a plurality of rollers are rotatably connected to both sides of the base.

[0019] Preferably, a control panel for controlling the drilling rig, the lifting assembly, the atomization assembly, the dust collection assembly and the stabilizing assembly is provided on a fixed frame on one side of the installation pipe rack.

[0020] Compared with the related art, the indoor ceiling punching device provided by the utility model has the following beneficial effects:

[0021] 1. The drilling rig of the utility model is arranged on a jacking assembly, so that the workers do not need to climb high to drill holes and do not need to lift the drilling rig manually, thereby eliminating the problem of side deviation of drilling caused by arm pain caused by lifting the electric drilling rig high.

[0022] 2. The elastic accordion-shaped pleated sleeve provided in the utility model can absorb the dust generated when the drill rig is drilling, reduce the dust scattering and affecting the indoor environment, and turn on the atomizing nozzle, at this time the atomizing nozzle atomizes the periphery of the elastic accordion-shaped pleated sleeve, so that the dust floating out from the gap between the elastic accordion-shaped pleated sleeve and the ceiling can be treated, thereby greatly improving the cleanliness of the indoor ceiling when drilling.

[0023] 3. The utility model utilizes the display screen on the control panel to display the monitoring screen of the micro-probe, so as to fine-tune the drilling position of the drill bit on the drilling rig to make the drilling more accurate. When the drilling is completed, the micro-motor is turned on to drive the cleaning plate to rotate, so that the bristles on the cleaning plate can process the dust on the probe mirror surface, avoiding the hidden danger of unclear picture due to excessive dust on the probe mirror surface during the next drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A structural schematic diagram of a preferred embodiment of the indoor ceiling punching device provided by the utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of the pipe rack installed on the base shown;

[0027] Figure 3 for Figure 1 A schematic diagram of the installation structure of the elastic accordion-shaped pleated sleeve, the atomization component and the dust collection component on the drilling rig shown;

[0028] Figure 4 for Figure 3 A schematic diagram of the structure of the visible components on the drilling rig shown;

[0029] Figure 5 for Figure 4 A schematic diagram of the structure of the visual component shown;

[0030] Figure 6 for Figure 1 A schematic diagram of the structure of the lifting assembly shown;

[0031] Figure 7 for Figure 1 Schematic diagram of the structure of the visual component shown.

[0032] Numbers in the figure: 1. base; 1a. sliding hole; 11. roller; 2. mounting pipe rack; 2a. hollow cavity; 3. drilling rig; 31. mounting plate; 4. lifting assembly; 41. socket frame; 42. hydraulic cylinder A; 43. lifting plate; 44. sliding rod; 5. elastic accordion-shaped pleated sleeve; 51. outer ring; 6. atomization assembly; 61. annular tube; 62. atomization nozzle; 63. water storage tank; 7. dust collection assembly; 71. dust collection box; 72. dust guide tube; 73. dust collection drawer; 8. visual assembly; 81. micro probe; 811. probe mirror; 82. micro motor; 83. cleaning plate; 9. stabilizing frame assembly; 91. fixing frame; 92. hydraulic cylinder B; 93. top support plate; 94. limit slide rod; 10. control panel. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figures 1 to 7 The embodiment of the utility model provides an indoor ceiling punching device, comprising: a base 1; two rollers 11 are installed on both sides of the base 1 to facilitate the movement of the base 1; a mounting pipe rack 2 is fixedly embedded on the base 1, and a drilling rig 3 for punching holes in the indoor ceiling and a jacking assembly 4 for driving the drilling rig 3 to rise and fall are mounted on the mounting pipe rack 2; the jacking assembly 4 includes a sleeve frame 41, and the corners of the sleeve frame 41 are respectively fixedly mounted on each pipe body of the mounting pipe rack 2 , and a hydraulic cylinder A42 is fixedly installed on the sleeve frame 41, the output end of the hydraulic cylinder A42 faces upward and is fixedly installed with a lifting plate 43, and a plurality of sliding rods 44 are fixedly installed on the lower surface of the lifting plate 43, and the plurality of sliding rods 44 are respectively inserted into the hollow cavities 2a opened on each pipe body of the installation pipe rack 2 and are slidably connected with the hollow cavities 2a, and a mounting plate 31 is fixedly installed at the bottom of the drilling rig 3, and the mounting plate 31 is fixedly installed on the upper surface of the sleeve frame 41.

[0035] After the base 1 is pushed so that the base 1 is located at the position where the indoor ceiling needs to be drilled, the drill rig 3 is turned on and the drill bit on the drill rig 3 rotates at high speed, and then the hydraulic cylinder A42 is turned on so that the hydraulic cylinder A42 pushes the jacking plate 43 to rise. At this time, the drill bit on the drill rig 3 can drill holes in the indoor ceiling, and the sliding rod 44 inserted on each pipe body of the installation pipe rack 2 can improve the stability of the drill rig 3 when drilling upwards, and can also adjust the rising height of the drill rig 3 pushed by the hydraulic cylinder A42 according to different ceiling heights.

[0036] The drilling rig 3 is arranged on the lifting assembly 4, so that the workers do not need to climb high to drill holes and do not need to lift the drilling rig 3 manually, thereby eliminating the problem of side deviation of drilling caused by workers' arm pain due to lifting the electric drill rig high.

[0037] In the embodiments of the present invention, please refer to Figure 1 , Figure 3 and Figure 4 The fixed sleeve on the shell of the drilling rig 3 near the drill bit is provided with an elastic accordion-shaped pleated sleeve 5 for collecting dust, and the top of the elastic accordion-shaped pleated sleeve 5 is fixedly engaged with an outer ring 51, and the two sides of the mounting plate 31 are respectively provided with an atomization component 6 and a dust collection component 7.

[0038] The atomization assembly 6 includes an annular tube 61, and the annular tube 61 is arranged on the elastic accordion-shaped pleated sleeve 5. Specifically, the inner tube wall of the annular tube 61 is fixedly connected to the outer ring 51, and a plurality of annularly distributed atomization nozzles 62 are fixedly installed on the annular tube 61. The atomization nozzles 62 on the annular tube 61 are located on the outer tube wall on the upper side of the annular tube 61, and the annular tube 61 is connected to the drain outlet of the water tank 63 fixedly installed on the mounting plate 31 through a liquid guide tube.

[0039] The dust collecting assembly 7 includes a dust collecting box 71, which is fixedly mounted on the mounting plate 31, and a dust guiding pipe 72 is installed on the dust collecting box 71, and the dust guiding pipe 72 is fixedly connected to the through opening opened at the bottom of the elastic accordion-shaped pleated sleeve 5, and an induced draft fan and a dust collecting drawer 73 distributed up and down are installed in the dust collecting box 71, the induced draft fan's air inlet is connected to the dust guiding pipe 72, and the induced draft fan's dust exhaust port faces the dust collecting drawer 73.

[0040] When the drill bit on the top of the drilling rig 3 approaches the ceiling, the top of the elastic accordion-shaped pleated sleeve 5 abuts against the ceiling and covers the ceiling at the drilling position of the drill bit. As the jacking assembly 4 pushes the drilling rig 3 to rise and drill holes, the elastic accordion-shaped pleated sleeve 5 is also compressed, thereby preventing the elastic accordion-shaped pleated sleeve 5 from affecting the drilling operation of the drilling rig 3. The elastic accordion-shaped pleated sleeve 5 can absorb the dust generated by the drilling rig 3, thereby reducing the scattering of dust and affecting the indoor environment.

[0041] The atomizing nozzle 62 is turned on while the holes are being punched. At this time, the atomizing nozzle 62 atomizes the periphery of the elastic accordion-shaped pleated sleeve 5, so that dust can be reduced from the gap between the elastic accordion-shaped pleated sleeve 5 and the ceiling.

[0042] At the same time, the induced draft fan in the dust box 71 is turned on, so that the dust that falls to the bottom of the elastic accordion-shaped pleated sleeve 5 during drilling falls into the dust collection drawer 73 in the dust box 71 through the dust guide pipe 72, so that there is no need to manually handle the dust in the elastic accordion-shaped pleated sleeve 5 after the drilling is completed.

[0043] In the embodiments of the present invention, please refer to Figure 4 and Figure 5 The end of the shell of the drill rig 3 on which the drill bit is installed is equipped with a visual component 8, and the visual component 8 includes a miniature probe 81, the miniature probe 81 is fixedly embedded in the end of the shell of the drill rig 3 on which the drill bit is installed, and the miniature probe 81 is provided with a cleaning plate 83 for cleaning the probe mirror 811 on the miniature probe 81, a miniature motor 82 is fixedly installed on the shell on the side of the miniature probe 81, and the output end of the miniature motor 82 is fixedly connected to the connecting end of the cleaning plate 83, and bristles are fixedly embedded at the bottom of the cleaning plate 83, and the bristles are against the probe mirror 811 on the miniature probe 81.

[0044] After the base 1 is pushed so that it is located at the position where a hole is to be drilled in the indoor ceiling, the display screen on the control panel 10 is used to display the monitoring screen of the micro probe 81, so as to fine-tune the drilling position of the drill bit on the drilling rig 3 to make the drilling more accurate. When the drilling is completed, the micro motor 82 is turned on to drive the cleaning plate 83 to rotate, so that the bristles on the cleaning plate 83 can process the dust on the probe mirror 811, avoiding the hidden danger of unclear image due to excessive dust on the probe mirror 811 when drilling next time.

[0045] In the embodiments of the present invention, please refer to Figure 1 , Figure 2 and Figure 7 A stabilizing frame assembly 9 is also installed on the installation pipe rack 2, and the stabilizing frame assembly 9 is arranged below the jacking assembly 4, and the stabilizing frame assembly 9 includes a fixing frame 91, and the corners of the fixing frame 91 are respectively fixedly mounted on each pipe body of the installation pipe rack 2, and a hydraulic cylinder B92 is fixedly installed on the fixing frame 91, and the output end of the hydraulic cylinder B92 faces downward and passes through the base 1, and a top support plate 93 is fixedly installed on the output end of the hydraulic cylinder B92, and a plurality of limiting slide rods 94 are fixedly installed on the upper surface of the top support plate 93, and the plurality of limiting slide rods 94 respectively pass through the sliding holes 1a opened in the base 1 and are slidably connected with the sliding holes 1a, and a cavity for accommodating the top support plate 93 is opened at the bottom of the base 1.

[0046] The hydraulic cylinder B92 is turned on to drive the support plate 93 to slide down and push up the entire base 1 and make its roller 11 suspended in the air. Therefore, the support plate 93 can position the base 1 so that it cannot slide at will, and the limiting slide bar 94 on the support plate 93 can improve the stability of the support plate 93 when it is on the base 1. After the subsequent drilling is completed, the hydraulic cylinder B92 is turned on to drive the support plate 93 to be recovered into the cavity opened at the bottom of the base 1.

[0047] Among them, a control panel 10 for controlling the drilling rig 3, the lifting assembly 4, the atomization assembly 6, the dust collection assembly 7 and the stabilizing assembly 9 is fixedly mounted on one side of the mounting pipe rack 2, and the software and hardware mounted on the control panel 10 are both mature existing technologies.

[0048] The working principle of the indoor ceiling punching device provided by the utility model is as follows:

[0049] After the base 1 is pushed to the position where the indoor ceiling needs to be drilled, the display screen on the control panel 10 is used to display the monitoring screen of the micro-probe 81, and the drilling position of the drill bit on the drilling rig 3 is fine-tuned. The hydraulic cylinder B92 is turned on to drive the top support plate 93 to slide down to push the base 1 up and make the roller 11 suspended in the air. The drilling rig 3 is turned on to make the drill bit rotate at high speed, and then the hydraulic cylinder A42 is turned on to make the hydraulic cylinder A42 push the top plate 43 up, and then the indoor ceiling can be drilled. When drilling, dust falls to the bottom of the elastic accordion-shaped pleated sleeve 5 and is collected into the dust collection drawer 73 in the dust box 71 through the dust guide pipe 72. The utility model allows workers to drill holes without climbing high and lifting the drilling rig manually, thereby eliminating the problem of side deviation of drilling caused by arm pain caused by lifting the electric drill rig, and at the same time collects dust generated by drilling to avoid polluting the indoor environment.

[0050] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0051] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. An indoor ceiling drilling device, comprising a base (1) and a drilling machine (3), characterized in that: A mounting pipe rack (2) is fixed on the base (1), and a drilling machine (3) for drilling holes in an indoor ceiling and a lifting assembly (4) for driving the drilling machine (3) to rise and fall are mounted on the mounting pipe rack (2); An elastic accordion-shaped pleated sleeve (5) is arranged on the housing of the drill rig (3) close to the drill bit, and a visual component (8) is installed on the housing end of the drill rig (3) where the drill bit is installed, a mounting plate (31) is fixedly installed on the bottom of the drill rig (3), and an atomization component (6) and a dust collection component (7) are respectively arranged on both sides of the mounting plate (31); The visual component (8) comprises a micro-probe (81), the micro-probe (81) is fixedly embedded in the housing end of the drill bit installation of the drilling machine (3), and a cleaning plate (83) is arranged on the micro-probe (81); The atomizing assembly (6) comprises an annular tube (61), the annular tube (61) being arranged on an elastic accordion-shaped pleated sleeve (5), a plurality of annularly distributed atomizing nozzles (62) being fixedly mounted on the annular tube (61), and the annular tube (61) being connected to a drain port of a water storage tank (63) fixedly mounted on a mounting plate (31) via a liquid guide tube; The dust collecting assembly (7) comprises a dust collecting box (71), the dust collecting box (71) being fixedly mounted on the mounting plate (31), a dust guiding tube (72) being mounted on the dust collecting box (71), the dust guiding tube (72) being fixedly connected to a through opening opened at the bottom of the elastic accordion-shaped pleated sleeve (5).

2. The indoor ceiling punching device according to claim 1, characterized in that: A micro motor (82) is fixedly mounted on a housing on the side of the micro probe (81); an output end of the micro motor (82) is fixedly connected to a connection end of a cleaning plate (83); bristles are fixedly engaged at the bottom of the cleaning plate (83); the bristles abut against a probe mirror surface (811) on the micro probe (81).

3. The indoor ceiling punching device according to claim 1, characterized in that: An outer ring (51) is fixedly engaged on the top of the elastic accordion-shaped pleated sleeve (5).

4. The indoor ceiling punching device according to claim 3, characterized in that: The inner tube wall of the annular tube (61) is fixedly connected to the outer ring (51), and the atomizing nozzle (62) on the annular tube (61) is located on the outer tube wall on the upper side of the annular tube (61).

5. The indoor ceiling punching device according to claim 1, characterized in that: The dust collecting box (71) is provided with an induced draft fan and a dust collecting drawer (73) which are arranged vertically and horizontally. The induced draft fan's air inlet is connected to the dust guiding pipe (72), and the induced draft fan's dust exhaust outlet faces the dust collecting drawer (73).

6. The indoor ceiling punching device according to claim 1, characterized in that: The lifting assembly (4) comprises a sleeve frame (41), the corners of which are fixedly mounted on the respective pipe bodies of the installation pipe rack (2), and a hydraulic cylinder A (42) is fixed on the sleeve frame (41), the output end of the hydraulic cylinder A (42) faces upward and is fixed with a lifting plate (43), a plurality of sliding rods (44) are fixed on the lower surface of the lifting plate (43), the sliding rods (44) are respectively inserted into the hollow cavities (2a) opened on the respective pipe bodies of the installation pipe rack (2) and are slidably connected with the hollow cavities (2a), and the installation plate (31) is fixedly mounted on the upper surface of the sleeve frame (41).

7. The indoor ceiling punching device according to claim 1, characterized in that: A stabilizing frame assembly (9) is also mounted on the installation pipe rack (2), and the stabilizing frame assembly (9) is arranged below the jacking assembly (4). The stabilizing frame assembly (9) comprises a fixing frame (91), the corners of the fixing frame (91) are respectively fixedly mounted on each pipe body of the installation pipe rack (2), and a hydraulic cylinder B (92) is fixedly mounted on the fixing frame (91), the output end of the hydraulic cylinder B (92) faces downward and passes through the base (1), and a top support plate (93) is fixedly mounted on the output end of the hydraulic cylinder B (92).

8. The indoor ceiling punching device according to claim 7, characterized in that: A plurality of limiting sliding rods (94) are fixedly mounted on the upper surface of the top support plate (93), and the plurality of limiting sliding rods (94) respectively pass through sliding holes (1a) provided in the base (1) and are slidably connected to the sliding holes (1a).

9. The indoor ceiling punching device according to claim 8, characterized in that: The bottom of the base (1) is provided with a cavity for accommodating the top support plate (93), and two sides of the base (1) are rotatably connected to a plurality of rollers (11).

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