CN218926395U

CN218926395U - Power tube cutting device

Info

Publication number: CN218926395U
Application number: CN202223217692.4U
Authority: CN
Inventors: 何方珍
Original assignee: Individual
Current assignee: Gansu Zhenxin Electric Power Engineering Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-04-28
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a power tube cutting device which comprises a connecting frame, a first conveyor belt, a supporting column, a first fixing mechanism, a cutting mechanism, a pushing mechanism and a second fixing mechanism. According to the utility model, the second fixing mechanism arranged at the rear end of the cutting device can fix the power tube and assist the cutting mechanism to cut, and the pushing mechanism arranged at the front end of the second fixing mechanism pushes the cut power tube out of the device, so that automatic feeding, cutting and discharging of the power tube are basically realized, the cutting efficiency of the power tube can be effectively improved, the working intensity of workers is lightened, the power tube loss caused by possible deviation of manual cutting is avoided, the quality of a cut finished product is improved, the power tube cutting device has strong practicability, the whole structure is stable, and the functions are also more diversified.

Description

Power tube cutting device

Technical Field

The utility model relates to the field of power pipes, in particular to a power pipe cutting device.

Background

The electric tube is a product which is coated inside and outside by adopting PE (polyethylene) for hot dip molding or epoxy resin, has excellent corrosion resistance, has good electrical insulation property, does not generate electric erosion, has low water absorption rate, high mechanical strength and small friction coefficient, can achieve the aim of long-term use, can also effectively prevent plant root systems and damage of soil environmental stress, and the like, but in the actual use process, the electric tube is often required to be cut and cut due to the influence of field environment, so that the electric tube meets the actual requirements.

Most of the existing cutting devices adopt profile cutting machines, but the profile cutting machines need to manually measure the length of the power tube when cutting, the length of the power tube needs to be measured once after cutting, the cutting is complex, errors are easy to occur, the loss of the power tube is increased, and when some metal power tubes are cut, the cutting force is high due to the fact that the strength of the metal power tubes is high, the cutting force is great, the cutting surface of the power tube is uneven, and accordingly the quality of finished power tube products is affected.

Disclosure of Invention

Accordingly, in order to solve the above-described drawbacks, the present utility model provides an electric power pipe cutting apparatus.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a power tube cutting device, includes two sets of link, two sets of the inboard of link is equipped with the concave surface first conveyer belt that can pass the power tube, two sets of the top surface rear end of link is equipped with the first fixed establishment that can fix the power tube, two sets of the rear end of link is equipped with the cutting mechanism of a set of cuttable power tube, the rear end of cutting mechanism is equipped with the pushing mechanism that can fix and release automatically to the cutting power tube, the rear end of pushing mechanism is equipped with the second fixed establishment that can fix and assist cutting to the power tube, two sets of the bottom surface of link is connected with four sets of supportable cutting device support columns respectively, pushing mechanism and second fixed establishment's bottom surface all is connected with two sets of support columns, eight sets of the bottom surface of support column all is connected with the universal wheel.

Preferably, the first fixed establishment includes mount, first gear, second conveyer belt, fixed concave wheel, second gear and first motor, the mount is the "U" that falls, and its inside is equipped with the cavity, and the upper and lower end about in the cavity all is equipped with a set of first gear, control two sets of first gear all is connected through a set of second conveyer belt, and the mount inboard is equipped with the spout in the position of controlling two sets of second conveyer belts in correspondence, the middle-end breach department of mount is equipped with a set of fixed concave wheel, the left and right sides end of fixed concave wheel all is equipped with a set of second gear, control two sets of second gear insert respectively in two sets of second conveyer belts about through the spout, the left side top of mount is equipped with a set of first motor, the drive shaft of first motor runs through the mount top of controlling and is connected with left upper end first gear to connect two sets of first gears through a set of connecting rod, the bottom is connected in the top surface rear end of controlling two sets of connecting brackets respectively about the mount.

Preferably, the cutting mechanism comprises a cutting cabin, a sliding table, a cutting blade and a second motor, wherein a cavity is formed in the inner middle end of the cutting cabin, a group of sliding tables are connected to the inner bottom end of the cavity, the cutting blade is connected to the top end of the sliding table through a sliding block, a group of second motors are connected to the rear middle end of the cutting blade, the front left and right ends of the cutting cabin are respectively connected with the rear ends of two groups of connecting frames, and the rear end face of the cutting cabin is connected with a pushing mechanism.

Preferably, the pushing mechanism comprises a first supporting plate, a second supporting plate, a supporting table and a pushing mechanism, a cavity is arranged in the first supporting plate, an opening is formed in the rear end of the first supporting plate, the front end of the second supporting plate is inserted into the cavity through the opening of the rear end of the second supporting plate, the supporting table is arranged at the position, corresponding to the first conveyor belt, of the middle end of the top surface of the first supporting plate, the pushing mechanism is arranged at the left end of the top surface of the first supporting plate, the rear end of the second supporting plate is connected with the front end of the second fixing mechanism, and a group of supporting columns are arranged at the left end and the right end of the bottom surface of the first supporting plate.

Preferably, the pushing mechanism comprises a movable cabin, an air cylinder, a pushing rod and a fixed ring, wherein a cavity is arranged in the movable cabin, the left end outside the cavity is provided with the air cylinder, a pushing piece of the air cylinder penetrates through the left side of the cavity and is inserted into the cavity, the right end of the pushing piece is connected with a group of pushing rods, the right end of the pushing rod penetrates through the right end in the cavity and is flush with the right side of the movable cabin, the pushing rod is pushed out by the air cylinder to push the pushing rod to move rightwards, the top end of the movable cabin is hinged with the left end of the semi-annular fixed ring, the top end of the pushing rod is connected with the left end of the fixed ring through a swinging disc, the fixed ring is jacked upwards to enable the fixed ring to rotate upwards around a hinged position, and the bottom surface of the movable cabin is connected with the left end of the top surface of the first support plate.

Preferably, the second fixing mechanism comprises a fixing panel, magnetic chuck, a back cabin, a third gear, a third conveying belt and a third motor, wherein a group of magnetic chuck is arranged at the front end of the fixing panel corresponding to the top end of the supporting table, the back of the fixing panel is connected with the back cabin, a cavity with an inverse L shape is arranged in the back cabin, a group of third gears are arranged at the upper end and the lower end of the cavity, two groups of third gears are connected through a group of third conveying belts, the front middle end of each third gear is connected with a driving shaft of the corresponding third motor, the front middle end of each third gear is connected with the back middle end of each magnetic chuck through a group of connecting shafts, the front bottom end of the fixing panel is connected with the rear end of the corresponding second supporting plate, and a group of supporting columns are connected at the two ends of the bottom surface of the fixing panel.

Preferably, the cutting cabin is L-shaped, the top surface of the right end of the cutting cabin is provided with a chute for the cutting blade to move left and right, the top end of the cutting blade penetrates through the chute to be exposed out of the top surface of the right end of the cutting cabin, and the protruding part of the left end of the cutting cabin is provided with a containing groove for containing the cutting blade.

Preferably, the top surface of the second supporting plate is provided with two groups of supporting pieces, and the top ends of the two groups of supporting pieces sequentially penetrate through the inner top end of the first supporting plate and the bottom end of the supporting table and form an arc together with the top surface of the supporting table.

The utility model has the beneficial effects that:

according to the utility model, the second fixing mechanism arranged at the rear end of the cutting device can fix the power tube and assist the cutting mechanism to cut, and the pushing mechanism arranged at the front end of the second fixing mechanism pushes the cut power tube out of the device, so that automatic feeding, cutting and discharging of the power tube are basically realized, the cutting efficiency of the power tube can be effectively improved, the working intensity of workers is lightened, the power tube loss caused by possible deviation of manual cutting is avoided, the quality of a cut finished product is improved, the power tube cutting device has strong practicability, the whole structure is stable, and the functions are also more diversified.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a right side view of the present utility model;

FIG. 3 is a schematic diagram of a right perspective structure of a first securing mechanism according to the present utility model;

FIG. 4 is a schematic cross-sectional elevation view of a cutting mechanism of the present utility model;

FIG. 5 is a schematic illustration of a front cross-sectional structure of a pushing mechanism of the present utility model;

fig. 6 is a right side cross-sectional view of the second fixing mechanism of the present utility model.

Wherein: the device comprises a connecting frame-1, a first conveyor belt-2, a supporting column-3, a first fixing mechanism-4, a cutting mechanism-5, a pushing mechanism-6, a second fixing mechanism-7, a fixing frame-41, a first gear-411, a second conveyor belt-412, a fixed concave wheel-42, a second gear-421, a first motor-43, a cutting cabin-51, a sliding table-52, a cutting blade-53, a second motor-54, a first supporting plate-61, a second supporting plate-62, a supporting table-63, a pushing mechanism-64, a movable cabin-641, a cylinder-642, a pushing rod-643, a fixing ring-644, a fixing panel-71, a magnetic chuck-711, a back cabin-72, a third gear-721, a third conveyor belt-722 and a third motor-723.

Detailed Description

In order to further explain the technical scheme of the utility model, the following is explained in detail through specific examples.

Referring to fig. 1-2, the present utility model provides a power tube cutting device, including a left and a right two sets of connection frames 1, wherein the inner sides of the two sets of connection frames 1 are connected with a concave first conveyor belt 2 capable of conveying power tubes, the rear ends of the top surfaces of the two sets of connection frames 1 are welded with a first fixing mechanism 4 capable of fixing the power tubes, the rear ends of the two sets of connection frames 1 are provided with a set of cutting mechanism 5 capable of cutting the power tubes, the rear ends of the cutting mechanism 5 are welded with a pushing mechanism 6 capable of fixing and automatically pushing out the power tubes, the rear ends of the pushing mechanism 6 are welded with a second fixing mechanism 7 capable of fixing and assisting cutting the power tubes, the bottom surfaces of the two sets of connection frames 1 are respectively welded with four sets of support columns 3 capable of supporting the cutting device, the bottom surfaces of the pushing mechanism 6 and the second fixing mechanism 7 are welded with two sets of support columns 3 capable of supporting the whole cutting device, the bottom surfaces of eight sets of support columns 3 are all provided with universal wheels capable of driving the device to move.

Referring to fig. 3, the utility model provides an electric pipe cutting device, the first fixing mechanism 4 includes a fixing frame 41, a first gear 411, a second conveyor belt 412, a fixed concave wheel 42, a second gear 421 and a first motor 43, the fixing frame 41 is in an inverted "U" shape, a cavity is provided in the fixing frame, a set of first gears 411 are mounted at the upper and lower ends of the cavity, the left and right sets of first gears 411 are connected through a set of second conveyor belts 412, a chute is disposed at the position of the inner side of the fixing frame 41 corresponding to the two sets of second conveyor belts 412, a set of fixed concave wheels 42 is disposed at the middle end notch of the fixing frame 41, a set of second gears 421 are disposed at the left and right ends of the fixed concave wheels 42, the left and right sets of second gears 421 are respectively inserted into the left and right sets of second conveyor belts 412 through the chute, the second conveyor belts 412 are connected with the first gears 411 at the upper and lower ends, impurities are prevented from entering the fixing frame, the first motor 43 are mounted at the left and right ends of the fixing frame 41, a set of first motor 43 is mounted at the top ends of the first gears 43 corresponding to the two sets of second conveyor belts 412, a set of first motor 43 is driven by the first gears to rotate, and the upper and lower ends of the first gears are not connected to the first gears 41 through the first gears and the upper and lower ends of the first gears are driven to rotate, and the upper ends of the first gears are driven by the first gears and lower ends of the first gears 41 are driven to rotate, and the upper ends of the first gears are connected to the upper and lower ends of the first gears 43 are driven by the first gears and lower through the first gears and lower shafts and drive the upper shafts and lower shafts and 4.

Referring to fig. 4, the utility model provides a power tube cutting device, the cutting mechanism 5 includes a cutting compartment 51, a sliding table 52, a cutting blade 53 and a second motor 54, a cavity is provided at an inner middle end of the cutting compartment 51, a group of sliding tables 52 is installed at an inner bottom end of the cavity, the cutting blade 53 is connected to a top end of the sliding table 52 through a sliding block, the cutting blade 53 can be driven to move left and right by movement of the sliding block, a rear middle end of the cutting blade 53 is connected to a driving shaft of the second motor 54, the cutting blade 53 can be driven to rotate by driving the driving shaft of the second motor 54 to cut a power tube, the cutting compartment 51 is in an L shape, a chute for the cutting blade 53 to move left and right is provided at a right top surface of the cutting compartment 51, a top end of the cutting blade 53 is exposed to a right top surface of the cutting compartment 51 through the chute, and a storage groove for storing the cutting blade 53 is provided at a left protruding portion of the cutting compartment 51, so that injuries to a user can be prevented while storing the cutting blade 53.

Referring to fig. 5, the present utility model provides a power tube cutting device, the pushing mechanism 6 includes a first support plate 61, a second support plate 62, a supporting table 63 and a pushing mechanism 64, a cavity is disposed in the first support plate 61, an opening is disposed at the rear end of the first support plate, the front end of the second support plate 62 is inserted into the cavity through the rear end opening, the supporting table 63 is disposed at the position of the middle end of the top surface of the first support plate 61 corresponding to the first conveyor belt 2, which can be used for placing a power tube for cutting, and two sets of supporting members are welded to the top surface of the second support plate 62, the top ends of the two sets of supporting members sequentially penetrate through the top end in the first support plate 61 and the bottom end of the supporting table 63, and together form an arc with the top surface of the supporting table 63, the length of the supporting table 63 can be extended by pulling the second support plate 62 backward, which is more beneficial to the support of a longer power tube, the bottom surface of the movable cabin 641 is welded to the left end of the top surface of the first support plate 61, the push-out mechanism 64 comprises a movable cabin 641, a cylinder 642, a push rod 643 and a fixed ring 644, wherein a cavity is arranged in the movable cabin 641, the cylinder 642 is arranged at the left end outside the cavity, a push-out piece of the cylinder 642 penetrates through the left side of the cavity and is inserted into the cavity, the right end of the push rod 643 is welded with a group of push rods 643, the right end of the push rod 643 penetrates through the right end of the cavity and is flush with the right side of the movable cabin 641, the push rod 643 can be pushed out by the cylinder 642 so as to push the push rod 643 to move rightwards, the cut electric tube on the supporting table 63 is pushed out, the top end of the movable cabin 641 is hinged with the left end of the semi-annular fixed ring 644, the electric tube can be prevented from moving greatly when cut, the top end of the push rod 643 is connected with the left end of the fixed ring 644 through a swinging plate, the push rod 643 can be moved rightwards to jack the fixed ring 644 upwards, and enable the electric tube to rotate upwards around a hinge, and simultaneously, the limit on the power tube is released.

Referring to fig. 6, the second fixing mechanism 7 includes a fixing panel 71, a magnetic chuck 711, a back chamber 72, a third gear 721, a third transmission belt 722 and a third motor 723, wherein a set of magnetic chucks 711 is disposed at a position of the front end of the fixing panel 71 corresponding to the top end of the supporting table 63, and is capable of adsorbing and fixing a metal power tube, the back of the fixing panel 71 is connected with the back chamber 72, a cavity with an inverse L shape is disposed in the back chamber 72, the upper end and the lower end of the cavity are respectively provided with a set of third gears 721, the two sets of third gears 721 are connected through a set of third transmission belts 722, the front middle end of the lower end third gears 721 is connected with a driving shaft of the third motor 723, the front middle end of the upper end third gears 721 is connected with the back middle end of the magnetic chucks 711 through a set of connecting shafts, and the rotation of the driving shaft of the third motor 723 drives the lower end third gears 721 to drive the third transmission belt 722, thereby driving the rotation of the upper end third gears 721, and finally driving the magnetic chucks to rotate.

The working principle is as follows:

the utility model is put into position for use, before use, the fixed panel 71 is dragged backwards by applying force, the second supporting plate 62 is pulled out, the length of the supporting table 63 is prolonged, and the distance from the fixed panel 71 to the cutting blade 53 is equal to the length of the power tube to be cut;

when in use, the electric tube is arranged at the upper end of the first conveyor belt 2, the motor at the left end of the first conveyor belt 2 is started, the first conveyor belt 2 is driven to backwards transmit the electric tube until the rear end of the electric tube contacts the magnetic chuck 711 and is absorbed by the magnetic chuck 711, then the first motor 43 is started, the driving shaft of the first motor 43 rotates to drive the two groups of first gears 411 at the upper end to rotate, the second conveyor belt 412 is driven to drive the second gear 421 to move between the two groups of first gears 411, the fixed concave wheel 42 is driven to move up and down at the notch at the middle end of the fixed frame 41, the bottom end of the fixed concave wheel 42 can contact the top end of the electric tube to be cut, the electric tube can be fixed, then the second motor 54, the sliding table 52 and the third motor 723 are sequentially started, the driving shaft of the second motor 54 rotates to drive the cutting blade 53 to rotate, the sliding block on the sliding table 52 drives the cutting blade 53 to move so as to cut the power tube, meanwhile, the rotation of the driving shaft of the third motor 723 drives the rotation of the lower end third gear 721 to drive the third conveyor belt 722 to drive the rotation of the upper end third gear 721, finally drives the magnetic chuck 711 to rotate to drive the adsorbed metal power tube to rotate, assists the cutting blade 53 to cut the power tube, after the cutting is completed, the air cylinder 642 is started, the air cylinder 642 pushes the push rod so as to push the push rod 643 to move rightwards, the power tube which is cut on the supporting table 63 is pushed, the power tube is pushed out of the supporting table 63, and meanwhile, the first conveyor belt 2 continues to drive the power tube to move backwards to cut the next power tube.

The utility model provides a power tube cutting device, which can fix a power tube through a second fixing mechanism arranged at the rear end of the cutting device and assist the cutting mechanism to cut the power tube, and push the cut power tube out of the device through a pushing mechanism arranged at the front end of the second fixing mechanism, so that the automatic feeding, cutting and discharging of the power tube are basically realized, the cutting efficiency of the power tube can be effectively improved, the working intensity of workers is lightened, the power tube loss caused by the deviation possibly occurring in manual cutting is avoided, the quality of a cut finished product is improved, the power tube cutting device has stronger practicability, the whole structure is stable, and the functions are more diversified.

The foregoing is merely a preferred example of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a power tube cutting device which characterized in that: including controlling two sets of link (1), two sets of the inboard of link (1) is equipped with concave surface first conveyer belt (2) that can carry the electric power pipe, two sets of the top surface rear end of link (1) is equipped with first fixed establishment (4) that can fix the electric power pipe, two sets of the rear end of link (1) is equipped with cutting mechanism (5) that a set of can cut the electric power pipe, the rear end of cutting mechanism (5) is equipped with push mechanism (6) that can fix and release automatically to cut the electric power pipe, the rear end of push mechanism (6) is equipped with second fixed establishment (7) that can fix and assist the cutting to the electric power pipe, two sets of the bottom surface of link (1) is connected with four sets of supportable cutting device support columns (3) respectively, the bottom surface of push mechanism (6) and second fixed establishment (7) all is connected with two sets of support columns (3), eight sets of the bottom surface of support column (3) all is connected with the universal wheel.

2. A power pipe cutting apparatus according to claim 1, wherein: the utility model provides a fixed bolster, including fixed bolster (41), first gear (411), second conveyer belt (412), fixed concave wheel (42), second gear (421) and first motor (43), fixed bolster (41) are for falling "U" type, and its inside cavity that is equipped with, and the upper and lower end about in the cavity all is equipped with a set of first gear (411), control two sets of first gear (411) all are connected through a set of second conveyer belt (412), and fixed bolster (41) inboard is equipped with the spout in the position of controlling two sets of second conveyer belts (412), fixed bolster (41)'s middle-end breach department is equipped with a set of fixed concave wheel (42), fixed concave wheel (42) all be equipped with a set of second gear (421) about the end, about two sets of second gear (421) insert respectively in controlling two sets of second conveyer belts (412) through the spout, the left and right sides top of fixed bolster (41) is equipped with a set of first motor (43) respectively through a set of second conveyer belt (412), the top of first motor (43) is connected left and right sides top of a set of connecting rod (41) through the left and right sides top of a set of connecting rod (1) on the fixed bolster.

3. A power pipe cutting apparatus according to claim 1, wherein: cutting mechanism (5) are including cutting cabin (51), slip table (52), cutting blade (53) and second motor (54), the interior middle-end of cutting cabin (51) is equipped with the cavity, and the bottom is connected with a set of slip table (52) in the cavity, the top of slip table (52) is connected with cutting blade (53) through the slider, the back middle-end of cutting blade (53) is connected with a set of second motor (54), the front and back of cutting cabin (51) is controlled the end and is connected with the rear end of two sets of link (1) respectively, the rear end face of cutting cabin (51) is connected with pushing mechanism (6).

4. A power pipe cutting apparatus according to claim 3, wherein: push mechanism (6) are including first backup pad (61), second backup pad (62), brace table (63) and ejecting mechanism (64), be equipped with the cavity in first backup pad (61), and the rear end is equipped with the opening, in the front end of second backup pad (62) inserts the cavity through its rear end opening, the top surface middle-end of first backup pad (61) corresponds the position of first conveyer belt (2) and is equipped with brace table (63), the top surface left end of first backup pad (61) is equipped with ejecting mechanism (64), second backup pad (62) rear end is connected with second fixed establishment (7) front end, just the bottom surface of first backup pad (61) is controlled the end and is all equipped with a set of support column (3).

5. A power tube cutting device according to claim 4, wherein: the pushing mechanism (64) comprises a movable cabin (641), an air cylinder (642), a pushing rod (643) and a fixed ring (644), wherein a cavity is formed in the movable cabin (641), the air cylinder (642) is arranged at the left end outside the cavity, a pushing piece of the air cylinder (642) penetrates through the left side of the cavity and is inserted into the cavity, the right end of the pushing piece is connected with a group of pushing rods (643), the right end of the pushing rod (643) penetrates through the right end in the cavity and is flush with the right side of the movable cabin (641), the pushing rod can be pushed out through the air cylinder (642) to push the pushing rod (643) to move rightwards, the top end of the movable cabin (641) is hinged with the left end of the semi-annular fixed ring (644), the top end of the pushing rod (643) is connected with the left end of the fixed ring (644) through a swinging plate, the pushing rod (643) moves rightwards to jack the fixed ring (643) upwards, and the pushing rod upwards rotates around the hinging position, and the bottom surface of the movable cabin (641) is connected with the left end of the top surface of the first supporting plate (61).

6. A power pipe cutting apparatus according to claim 1, wherein: the second fixing mechanism (7) comprises a fixing panel (71), magnetic chucks (711), a back cabin (72), third gears (721), a third conveying belt (722) and a third motor (723), wherein a group of magnetic chucks (711) are arranged at positions, corresponding to the top ends of the supporting tables (63), of the front ends of the fixing panel (71), the back of the fixing panel (71) is connected with the back cabin (72), an inverted L-shaped cavity is arranged in the back cabin (72), a group of third gears (721) are arranged at the upper end and the lower end of the cavity, the two groups of third gears (721) are connected through a group of third conveying belts (722), the front middle ends of the third gears (721) are connected with the driving shafts of the third motor (723), the front middle ends of the third gears (721) are connected with the back middle ends of the magnetic chucks (711) through a group of connecting shafts, the front bottom ends of the fixing panel (71) are connected with the rear ends of the second supporting plates (62), and the two bottom ends of the fixing panel are connected with a group of supporting columns (3).

7. A power pipe cutting apparatus according to claim 3, wherein: the cutting cabin (51) is L-shaped, the top surface of the right end of the cutting cabin is provided with a sliding groove for the cutting blade (53) to move left and right, the top end of the cutting blade (53) penetrates through the sliding groove and is exposed out of the top surface of the right end of the cutting cabin (51), and the protruding portion of the left end of the cutting cabin (51) is provided with a containing groove capable of containing the cutting blade (53).

8. A power tube cutting device according to claim 4, wherein: the top surface of the second supporting plate (62) is provided with two groups of supporting pieces, and the top ends of the two groups of supporting pieces sequentially penetrate through the inner top end of the first supporting plate (61) and the bottom end of the supporting table (63) and form an arc together with the top surface of the supporting table (63).