CN209799749U - Heavy sound insulation electric sliding door - Google Patents
Heavy sound insulation electric sliding door Download PDFInfo
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- CN209799749U CN209799749U CN201821930112.7U CN201821930112U CN209799749U CN 209799749 U CN209799749 U CN 209799749U CN 201821930112 U CN201821930112 U CN 201821930112U CN 209799749 U CN209799749 U CN 209799749U
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Abstract
The utility model discloses a heavy sound insulation electric sliding door, including the sound insulation door plant with install bottom walking wheel subassembly and the electric control actuating system in the last guide system at sound insulation door plant top, bottom, it includes direction built-in fitting, rail brackets, guide rail, sound insulation housing, leading wheel and door plant sealing system to go up the guide system, bottom walking wheel subassembly includes lower sealing system, bottom light rail built-in fitting, walking wheel, light rail and steel structure support, the sound insulation door plant is steel structure noise source skeleton, can pack sound insulation material in order to play the effect of isolated noise to the corresponding sound insulation volume of different noise sources in it. The utility model discloses an indoor outer good sound insulation effect, the bottom walking wheel subassembly through electric control actuating system drive upper guide system, bottom realizes the free movement or the rotary motion of heavy sound insulation door simultaneously, and it is high to solve present gate space occupancy of making an uproar that falls, and electric degree of automation is low, separates the not good problem of effect of making an uproar.
Description
Technical Field
The utility model belongs to the technical field of the building sound insulation, more specifically relates to a heavy sound insulation electric sliding door.
Background
The soundproof door is mainly used for playing the effect of giving sound insulation in high syllable-dividing requirement place, and along with the increase of the population of china, the population density in residential area is bigger and bigger, and people also more and more attach importance to privacy problem and noise pollution problem, and the requirement of giving sound insulation to places such as residence and office space is also higher and higher. The starting of many laboratory and factory equipments often brings huge noise, and the noise can cause great physiological and psychological influence on scientific research personnel, factory workers and even surrounding residents. The heavy electric soundproof door can be used for large laboratories, processing plants and any places where indoor noise needs to be treated, and has the functions of opening and closing the electric drive gate and effectively isolating the indoor noise.
at present, in industrial noise control, a commonly used noise reduction gate is set to be a double-door or single-door, but the requirement on the space near the gate is extremely high due to the door opening mode, and the requirement that an object is not allowed to be placed in a sector area within the radius range of a door leaf is met. Moreover, the size of the noise reduction gates is generally 4 meters × 4 meters, or 8 meters × 8 meters or even larger, and most of the noise reduction gates are manually opened and closed. The noise reduction gate with the large specification has the advantages of large weight and difficulty in pushing, and frequent opening and closing can cause great potential safety hazards to people opening and closing the door. Meanwhile, after the single-open type or split type gate is closed, gaps exist between the upper edge and the lower edge of the door leaf and the door frame, and therefore the sound insulation effect of the gate is not ideal.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects or the improvement requirements of the prior art, the utility model provides a heavy-duty sound insulation electric sliding door, which comprises a sound insulation door plate, an upper guide system arranged at the top of the sound insulation door plate, a bottom walking wheel assembly at the bottom and an electric control driving system, wherein the sound insulation door plate is a steel structure framework, the sound insulation material can be filled in the room according to the corresponding sound insulation quantity of different noise sources to play a role of isolating noise, thereby realizing good sound insulation effect indoors and outdoors, meanwhile, the bottom walking wheel assembly at the bottom and the upper guide system are driven by the electric control driving system to realize free movement or rotation movement of the heavy type sound insulation door, power consumption loss caused by frequent opening and closing of people entering and exiting the heavy type door is effectively avoided, personnel safety is effectively guaranteed, and the problems of high space occupancy rate, low electric automation degree and poor noise insulation effect of the existing noise reduction gate are solved.
in order to realize the aim, the utility model provides a heavy-duty sound-insulation electric sliding door, which comprises a sound-insulation door plate, an upper guide system arranged at the top of the sound-insulation door plate, a bottom walking wheel component at the bottom and an electric control driving system,
The upper guide system comprises an upper guide embedded part, a guide rail support, a guide rail, a sound insulation cover shell, a guide wheel and a door plate sealing system, wherein the guide rail is mechanically connected with the guide rail support;
The sound insulation shell cover is right-angled in cross section, the upper end of the sound insulation shell cover is connected with the construction beam, the lower end of the sound insulation shell cover is connected with the door plate sealing system, and the inner side of the door plate sealing system is close to the outer surface of the sound insulation door plate, so that indoor noise is effectively prevented from being transmitted out of a room through a gap between the sound insulation door plate and the upper guide system;
The bottom travelling wheel assembly comprises a lower sealing system, a bottom light rail embedded part, travelling wheels, a light rail and a steel structure support, the light rail is combined with a foundation through clamping and fixing of the bottom light rail embedded part, the travelling wheels are fixed by the steel structure support, the upper end of the steel structure support is mechanically connected with the bottom end of the sound insulation door plate, the travelling wheels are embedded into the light rail and can roll along the light rail to drive the sound insulation door plate to move in parallel, so that the weight of a heavy sliding door is transmitted to the travelling wheels and the light rail, and the travelling wheels move along the light rail under the action of the electric control driving system;
The sound insulation door plate is a steel structure framework, and sound insulation materials can be filled in the sound insulation door plate aiming at the corresponding sound insulation quantities of different noise sources so as to play a role in isolating noise.
Furthermore, the lower sealing system comprises two symmetrical parts, the sections of all the parts are in a long and thin rectangle shape and are vertically arranged in space, the lower ends of all the parts are in contact sealing with the bottom surface of the outer side of the light rail, the upper ends of all the parts are mechanically connected with angle steel through bolts, one surface of the angle steel is attached to the inner edge of the lower sealing system, the other surface of the angle steel is close to the outer wall of the steel structure support and is attached to the lower surface part of the sound insulation door plate, and noise is prevented from being transmitted out of a room from gaps between the travelling wheels.
further, the electric control driving system comprises a gear rack device, a motor and a controller, wherein a signal output end of the controller is connected with a signal input end of the motor to control the motor to start and stop, the motor is used for driving the chain wheel to rotate and driving the gear to rotate, and further drives the rack fixedly connected with the lower portion of the sound insulation door plate to move in parallel to drive the sliding door to move, so that the sliding door is automatically opened and closed.
Furthermore, the sound insulation door panel is two, one of them the sound insulation door panel is last to have seted up personnel's little door that passes, personnel pass through little door and two explosion-proof sound proof window and door handle are all installed to the sound proof door panel surface.
Furthermore, an interlocking device is arranged between the sound insulation door plate and the small personnel passing door, so that the sound insulation door plate does not respond to any operation instruction when the small personnel passing door is opened, the small door is opened in the moving process of the gate, and the gate stops operating immediately.
Furthermore, the guide wheels are uniformly distributed at the top of the sound insulation door plate and can rotate around the shaft and slide along the guide rail.
Furthermore, a switch stop button is arranged on the sound insulation door plate, and infrared sensing devices are respectively arranged on the inner side and the outer side of the sound insulation door plate, so that the sound insulation door plate can conveniently send out acousto-optic warning before the movement starts.
Furthermore, a clutch is arranged on the sound insulation door plate, so that the sound insulation door plate can be opened and closed by adopting a special crank under the condition of power failure or emergency.
Furthermore, the side surface of the sound insulation door plate is provided with a pneumatic safety edge, and the pneumatic safety edge is made of a high weather-resistant chloroprene rubber material.
Further, the pneumatic safety rim is internally provided with a pressure wave sensor.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
(1) The utility model discloses a heavy sound insulation electric sliding door, include the sound insulation door plant and install the last guiding system at sound insulation door plant top, the bottom walking wheel subassembly and the electric control actuating system of bottom, the sound insulation door plant is steel construction skeleton, can fill sound insulation material in order to play the effect of isolated noise to the corresponding sound insulation volume of different noise sources in it, indoor outer good sound insulation effect has been realized, simultaneously through electric control actuating system drive go up guiding system, the free movement or the rotary motion of heavy sound insulation door is realized to the bottom walking wheel subassembly of bottom, effectively avoided because the frequent switching of personnel business turn over heavy door causes loss of power consumption, guarantee personnel's safety effectively, it is high to solve present gate space occupancy of making an uproar, electric degree of automation is low, the not good problem of noise insulation effect.
(2) the utility model discloses an electronic push-and-pull door of heavy sound insulation, the sound insulation clamshell cross-section on its top is right angle shape, and its upper end is connected with the structure roof beam, and the lower extreme is connected with door plant sealing system, and sound insulation door plant surface is pressed close to door plant sealing system inboard, prevents effectively that indoor noise from spreading outdoors through the gap between sound insulation door plant and the last guiding system, and then avoids the sound insulation effect of push-and-pull door to weaken.
(3) The utility model discloses a heavy sound insulation electric sliding door, the walking wheel is fixed by steel structure support. The upper end of the steel structure support is mechanically connected with the bottom end of the sound insulation door plate, the walking wheels are embedded into the light rail and can roll along the light rail to drive the sound insulation door plate to move in parallel, so that the weight of the heavy-duty sliding door is transmitted to the walking wheels and the light rail, and the walking wheels and the light rail are enabled to bear the weight of the sliding door plate together.
(4) The utility model discloses a heavy sound insulation electric sliding door, the symmetry two parts around lower seal system divide into, and each partial cross-section is long and thin rectangle and vertical arrangement in the space, and each partial lower extreme all seals with the contact of light rail outside bottom surface, and the upper end is all through bolt and angle steel mechanical connection, and along the laminating in angle steel one side and the lower seal system, the another side presses close to steel structure support outer wall and laminates with sound insulation door plant lower surface part to realize keeping apart the indoor noise, prevent that the noise from following the walking wheel with it is outdoor to spread in the light rail gap, and then avoids the sound insulation effect of push-and-pull door to weaken.
(5) The utility model discloses a heavy sound insulation electric sliding door, the controller control opening of motor, after the motor starts, drive the sprocket rotation, power is transmitted to gear rack device through the chain by the sprocket, drives the gear rotation, and then drives the rack parallel translation of sound insulation door plant lower part rigid coupling, drives the sliding door and moves to realize the full-open full-cut-off of sliding door; the power output transmission mode of motor drive and gear rack mechanism transmission is adopted, the power consumption of opening and closing the sliding door is greatly reduced, and the safety and the automation degree of opening and closing the industrial door are improved.
Drawings
Fig. 1 is a schematic structural view of a heavy-duty sound insulation electric sliding door according to an embodiment of the present invention;
fig. 2 is a top view of a heavy-duty sound insulation electric sliding door according to an embodiment of the present invention;
Fig. 3 is a left side view of a heavy-duty sound-insulation electric sliding door according to an embodiment of the present invention;
Fig. 4 is a schematic structural view of an upper guide device of a heavy-duty sound-insulation electric sliding door according to an embodiment of the present invention;
Fig. 5 is a schematic structural view of a bottom traveling wheel assembly of a heavy-duty sound-insulation electric sliding door according to an embodiment of the present invention.
Fig. 6 is the embodiment of the utility model provides a walking wheel schematic diagram of heavy sound insulation electric sliding door.
In all the figures, the same reference numerals denote the same features, in particular: 1-constructing a beam; 2-an upper guiding system; 3-a bottom walking wheel assembly; 4-rack and pinion arrangement; 5, a motor; 6-sound insulation door plate; 7-explosion-proof sound insulation window; 8-small door for personnel to pass through; 9-a door handle; 10-a control machine; 11-a canopy; 201-upper guiding embedded parts; 202-a guide rail bracket; 203-a guide rail; 204-a sound-proof enclosure; 205-a guide wheel; 206-door panel sealing system; 301-lower sealing system; 302-bottom light rail embedment; 303-road wheels; 304-light rail; 305-steel structural support.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Fig. 1 is a schematic structural view of a heavy-duty sound insulation electric sliding door according to an embodiment of the present invention. As shown in figure 1, the system comprises an acoustic insulation door panel 6, an upper guide system 2 arranged on the top of the acoustic insulation door panel 6, a bottom walking wheel assembly 3 arranged on the bottom of the acoustic insulation door panel, and an electric control driving system. The sound insulation door plate 6 is a steel structure framework, corresponding sound insulation amount can be designed aiming at different noise sources, and sound insulation materials are filled in the sound insulation door plate, so that the sound insulation door plate plays a role in effectively isolating noise; the upper guide system 2 ensures the translational opening and closing of the sliding door on one hand and plays a part in separating noise on the other hand; the bottom walking wheel assembly 3 mainly plays a role in bearing and partially insulating noise; the electric control driving system converts electric energy into mechanical energy for opening and closing the sliding door through the corresponding transmission mechanism, and the heavy sound insulation electric sliding door is opened and closed.
as shown in fig. 1, the sound insulation door plant 6 is including controlling two-sided door plant altogether, and all can follow guide rail 203 translation and slide to realize the switching of push-and-pull door, one of them 6 bottom intermediate position of sound insulation door plant opens the current little door 8 of personnel, the current little door 8 of personnel and two the explosion-proof sound proof window 7 and door handle 9 of sound insulation door plant 6 surface all installation, the explosion-proof sound insulation of the current little door 8 of personnel, and be the passageway of personnel's safe business turn over, explosion-proof sound proof window 7 plays explosion-proof, sound insulation and indoor daylighting's effect. The utility model discloses a heavy sound insulation electric sliding door through setting up the current wicket 8 of the personnel of establishing, has effectively avoided because personnel pass in and out, the loss of power consumption that heavy door frequent switching caused, people, thing separation simultaneously, guarantee personnel's safety.
as shown in fig. 3 and 4, the upper guide system 2 includes an upper guide embedment 201, a guide rail bracket 202, a guide rail 203, a sound proof housing 204, guide wheels 205, and a door panel sealing system 206. The guide rail 203 is mechanically connected with the guide rail support 202, the guide rail support 202 is fixedly connected with the construction beam 1 through the upper guiding embedded part 201, the number of the guide wheels 205 is 4, and the guide wheels are uniformly distributed on the top of the sound insulation door panel 6, a bottom end support of each guide wheel 205 is mechanically connected with the sound insulation door panel 6 through a bolt, a top end guide wheel body is embedded in the guide rail 203, and the guide wheels 205 can rotate around a shaft and slide along the guide rail 203 to realize the opening and closing action of the sliding door; the sound insulation enclosure 204 is right-angled in cross section, the upper end of the sound insulation enclosure is connected with the construction beam 1, the lower end of the sound insulation enclosure is connected with the door plate sealing system 206, the inner side of the door plate sealing system 206 is close to the outer surface of the sound insulation door plate 6, and the sound insulation enclosure 204 and the door plate sealing system 206 jointly play a role in preventing indoor noise from being transmitted out of a room through a gap between the sound insulation door plate 6 and the upper guide system 2 to cause the situation that the sound insulation capacity of a sliding door is weakened; the top of the upper guide system 2 extends out of a canopy 11, and the canopy 11 is used for shielding the whole sliding door.
As shown in fig. 5 and 6, the bottom traveling wheel assembly 3 includes a lower sealing system 301, a bottom light rail embedded part 302, traveling wheels 303, light rails 304 and steel structure brackets 305, the number of the traveling wheels 303 is 4, and the traveling wheels are uniformly distributed at the bottom of the sound insulation door panel 6, and the traveling wheels 303 are fixed by the steel structure brackets 305 and can rotate around a shaft. The upper end of the steel structure bracket 305 is mechanically connected with the bottom end of the sound insulation door panel 6, the travelling wheel 303 is embedded into the light rail 304 and can roll along the light rail 304 to drive the sound insulation door panel 6 to move in parallel, so that the weight of the heavy sliding door is transferred to the travelling wheel 303 and the light rail 304, and the travelling wheel 303 and the light rail 304 play a role in bearing; the light rail 304 is clamped and fixed through a light rail embedded part 302 at the bottom and firmly combined with a foundation, the lower sealing system 301 is divided into a front part and a rear part which are symmetrical, the sections of all the parts are long and thin rectangles and are vertically arranged in space, the lower ends of all the parts are in contact sealing with the bottom surface of the outer side of the light rail 304, the upper ends of all the parts are mechanically connected with angle steel through bolts, one surface of the angle steel is attached to the inner edge of the lower sealing system 301, and the other surface of the angle steel is attached to the outer wall of the steel structure support 305 and is attached to the lower surface of the sound insulation door plate 6, so that indoor noise isolation is realized, and noise is prevented.
As shown in fig. 1, 2 and 5, the electrically controlled drive system includes a rack and pinion device 4, a motor 5 and a controller 10. The controller 10 is arranged on a wall body near a sliding door, a control system of the controller adopts variable frequency programmable control, a signal output end of the controller is connected with a signal input end of the motor 5 so as to control the starting and stopping of the motor 5, a switch stop button is arranged on the sound insulation door panel 6, the button is a inching switch, and the stopping and closing actions can be realized at any time in the starting process of the sound insulation door panel 6; after the motor 5 is started, the chain wheel is driven to rotate, power is transmitted to the gear rack device 4 through the rack by the chain wheel, the gear is driven to rotate, the rack fixedly connected to the lower portion of the sound insulation door plate 6 is driven to move in parallel, and the sliding door is driven to move, so that the sound insulation door plate 6 is fully opened and fully closed; the sound insulation door plate 6 gives out sound and light warning 30 seconds before the movement starts, infrared sensing devices are respectively arranged on the inner side and the outer side of the sound insulation door plate 6, and when people or objects approach the sound insulation door plate 6 within a certain range in the closing process, the sound insulation door plate 6 stops automatically. An interlocking device is arranged between the sound insulation door panel 6 and the small personnel passing door 8, and when the small personnel passing door 8 is opened, the main body of the sound insulation door panel 6 does not respond to any operation instruction. The sound insulation door plate 6 is provided with a clutch, and a special crank can be adopted to realize the opening and closing of the sound insulation door plate 6 under the condition of power failure or emergency.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (10)
1. The utility model provides a heavy sound insulation electric sliding door, includes the sound insulation door plant and installs bottom walking wheel subassembly and the electric control actuating system in the last guiding system of sound insulation door plant top, bottom, its characterized in that:
The upper guide system comprises an upper guide embedded part, a guide rail support, a guide rail, a sound insulation cover shell, a guide wheel and a door plate sealing system, wherein the guide rail is mechanically connected with the guide rail support;
the cross section of the sound insulation housing is right-angled, the upper end of the sound insulation housing is connected with the construction beam, the lower end of the sound insulation housing is connected with the door plate sealing system, and the inner side of the door plate sealing system is close to the outer surface of the sound insulation door plate, so that indoor noise is effectively prevented from being transmitted out of a room through a gap between the sound insulation door plate and the upper guide system;
The bottom travelling wheel assembly comprises a lower sealing system, a bottom light rail embedded part, travelling wheels, a light rail and a steel structure support, the light rail is combined with a foundation through clamping and fixing of the bottom light rail embedded part, the travelling wheels are fixed by the steel structure support, the upper end of the steel structure support is mechanically connected with the bottom end of the sound insulation door plate, the travelling wheels are embedded into the light rail and can roll along the light rail to drive the sound insulation door plate to move in parallel, so that the weight of a heavy sliding door is transmitted to the travelling wheels and the light rail, and the travelling wheels move along the light rail under the action of the electric control driving system;
The sound insulation door plate is a steel structure framework, and sound insulation materials can be filled in the sound insulation door plate aiming at the corresponding sound insulation quantities of different noise sources so as to play a role in isolating noise.
2. the heavy sound insulation electric sliding door according to claim 1, wherein the lower sealing system comprises two symmetrical parts, the sections of the parts are elongated rectangles and are vertically arranged in space, the lower ends of the parts are in contact sealing with the bottom surface of the outer side of the light rail, the upper ends of the parts are mechanically connected with angle steel through bolts, one surface of the angle steel is attached to the inner edge of the lower sealing system, the other surface of the angle steel is attached to the outer wall of the steel structure support and attached to the lower surface of the sound insulation door plate, and noise is prevented from being transmitted out of a gap between the travelling wheels and the light rail.
3. The heavy sound insulation electric sliding door according to claim 1, wherein the electric control driving system comprises a gear and rack device, a motor and a controller, wherein a signal output end of the controller is connected with a signal input end of the motor to control the motor to start and stop, the motor is used for driving a chain wheel to rotate and driving a gear to rotate, and further driving a rack fixedly connected to the lower portion of the sound insulation door plate to move in parallel to drive the sliding door to move, so that the sliding door can be automatically opened and closed.
4. the heavy sound insulation electric sliding door according to claim 1, wherein the sound insulation door panel is two, one sound insulation door panel is provided with a small personnel passing door, and the surfaces of the small personnel passing door and the two sound insulation door panels are provided with an explosion-proof sound insulation window and a door handle.
5. The heavy sound-insulation electric sliding door according to claim 4, characterized in that an interlocking device is arranged between the sound-insulation door plate and the small personnel passing door, so that the sound-insulation door plate does not respond to any operation instruction when the small personnel passing door is opened, the small door is opened in the moving process of the gate, and the gate stops operating immediately.
6. the heavy-duty sound-insulation electric sliding door according to claim 1 or 3, wherein the guide wheels are uniformly distributed on the top of the sound-insulation door plate, and can rotate around a shaft and slide along the guide rail.
7. The heavy-duty sound-insulation electric sliding door according to claim 1, wherein a switch stop button is arranged on the sound-insulation door plate, and infrared sensing devices are respectively arranged on the inner side and the outer side of the sound-insulation door plate, so that the sound-insulation door plate can give out a sound-light warning before the movement starts.
8. the heavy-duty sound-insulation electric sliding door according to claim 1, wherein a clutch is arranged on the sound-insulation door plate, so that the sound-insulation door plate can be opened and closed by a special crank in case of power failure or emergency.
9. the heavy-duty sound-insulation electric sliding door according to claim 1, wherein a pneumatic safety edge is arranged on the side surface of the sound-insulation door plate, and the pneumatic safety edge is made of a high weather-resistant chloroprene rubber material.
10. The heavy duty sound insulating sliding door according to claim 9, wherein said pneumatic safety rim houses a pressure wave sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930112.7U CN209799749U (en) | 2018-11-22 | 2018-11-22 | Heavy sound insulation electric sliding door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821930112.7U CN209799749U (en) | 2018-11-22 | 2018-11-22 | Heavy sound insulation electric sliding door |
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| Publication Number | Publication Date |
|---|---|
| CN209799749U true CN209799749U (en) | 2019-12-17 |
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ID=68816655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821930112.7U Active CN209799749U (en) | 2018-11-22 | 2018-11-22 | Heavy sound insulation electric sliding door |
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| CN (1) | CN209799749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356487A (en) * | 2018-11-22 | 2019-02-19 | 中国人民解放军92578部队 | A kind of heavy sound insulation electric pull/push door |
| CN117108182A (en) * | 2023-09-11 | 2023-11-24 | 城林科技(上海)有限公司 | Electric sound insulation gate capable of being rapidly constructed on site |
-
2018
- 2018-11-22 CN CN201821930112.7U patent/CN209799749U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356487A (en) * | 2018-11-22 | 2019-02-19 | 中国人民解放军92578部队 | A kind of heavy sound insulation electric pull/push door |
| CN117108182A (en) * | 2023-09-11 | 2023-11-24 | 城林科技(上海)有限公司 | Electric sound insulation gate capable of being rapidly constructed on site |
| CN117108182B (en) * | 2023-09-11 | 2024-02-06 | 城林科技(上海)有限公司 | Electric sound insulation gate capable of being rapidly constructed on site |
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