Double-track double-frame deformable house
The present invention is a divisional application of the following issued patents:
ZL 201680069277.7(PCT/IB2016/054059 into China)
Technical Field
The invention relates to the field of movable building structures, in particular to a movable double-rail double-frame deformation house.
Background
As shown in fig. 1, a main structure of a portable house disclosed in the utility model having the prior patent No. 201220455949.7 and the patent name "a portable house with a floor capable of being automatically installed" is that a floor 300 is connected to a movable frame 200 through a member 500 and a member 600, and when the movable frame 200 is laterally extended from a fixed frame 100, the floor 300 is driven by the member 500 and the member 600 to be laid in the movable frame 200; when the movable frame body 200 is returned to the fixed frame body 100, the floor 300 is driven by the members 500 and 600 to be longitudinally attached to one side of the fixed frame body 100, and in the implementation process, the floor 300 is easy to be restricted by the movable frame body 200 and difficult to start at the initial return of the floor 300; and the floor 300 may have difficulty performing its aforementioned return action due to deformation of the members 500, 600; since the movable frame 200 transmits the driving force for returning the floor 300, the lower portion thereof is easily deformed; in view of the above, such a structure is liable to cause destructive damage between the floor and the movable frame in practical use.
Disclosure of Invention
The invention aims to solve the problems and provides a movable bidirectional expanded house, which is realized by the following technical scheme:
a movable two-way expandable house comprises: the main body frame is supported on the ground, and at least one group of slide rails are symmetrically arranged at the side edge part of the main body frame; the expansion frame is arranged on the sliding rail in a sliding mode; the first driving mechanism drives the expansion frame to slide in or out of the main body frame, so that the expansion frame is positioned in the main body frame or suspended on the side edge of the main body frame, and when the expansion frame is suspended on the side edge of the main body frame, the main body frame is communicated with the inside of the expansion frame to form an internal space of a movable house; a floor member corresponding to the extension frame, one side of the floor member being hinged to a lower portion of the main body frame; the floor piece is driven by the second driving mechanism to overturn so as to be attached to one vertical side face of the main body frame or the bottom of the expansion frame; and a mask film machine 7 the mask film mechanism 7 includes a rotating shaft rotatably disposed on the upper portion of the main body frame 1 and a mask film 71 connected to the rotating shaft, and the mask film is covered on the outer side of the main body frame or wound on the rotating shaft. The second driving mechanism independently drives the floor piece to overturn between the main body frame and the expansion frame, and no interference occurs between the floor piece and the expansion frame, so that the stable operation state of the floor piece and the expansion frame is ensured, and the structural stability of the floor piece and the expansion frame is improved.
As a preferred mode of the present invention, there are two sets of the slide rails, and the two sets of the slide rails are parallel to each other; correspondingly, the number of the expansion frames is two, namely a first expansion frame and a second expansion frame; the first expansion frame and the second expansion frame can respectively slide on the two groups of slide rails of the main body frame along opposite directions; the outer side surface of the floor piece is connected with a connecting rod mechanism; the second driving mechanism is a second oil cylinder connected to the lower part of the main body frame, and the output end of the second oil cylinder is connected with the connecting rod mechanism to drive the floor piece to turn around the lower part of the main body frame; the main body frame, the first expanding frame and the second expanding frame are rectangular frames, and the two groups of sliding rails are respectively arranged on the inner sides of the two longitudinal ends of the main body frame along the transverse direction; the first outdoor unit is longer than and higher than the second outdoor unit; and the transverse two side surfaces of the main body frame are respectively provided with a first sealing frame and a second sealing frame which are in contact connection with the upper parts of the first expansion frame and the second expansion frame. By the implementation mode, when the two expansion frames extend to two sides of the main body frame, torsion generated by the expansion frames relative to the main body frame can be balanced to a certain degree, so that the overall structure is more stable; and because the first expansion frame is longer than and higher than the second expansion frame, the invention can obtain larger internal space in the use state under the condition of not increasing the structural size of the main body frame.
In order to realize the adjustment of the shielding film rolling state by the shielding film mechanism, the shielding film mechanism can adopt the following structure:
the shielding film mechanism 7 further comprises a storage box 72, a push rod 73 and a driving motor, the storage box is longitudinally arranged at the top of the main body frame 1, the rotating shaft is rotatably arranged in the storage box, the driving motor is in driving connection with the rotating shaft, and one end of the push rod is hinged to the outer side face of the expansion frame 2; when the expansion frame 2 extends out of the main body frame 1, the shielding film extends to the lower portion of the outer side of the expansion frame 2 from the side opening of the storage box, the other end of the ejector rod abuts against the middle of the shielding film, so that the shielding film covers the outer side of the main body frame, and the portion, located above the expansion frame, of the shielding film is trapezoidal, so that the rainproof and windproof functions are good.
Because the oil cylinder driving mode has better power performance and is easy to control the driving process, the technical scheme of the invention can be optimized as follows:
a movable two-way expandable house comprises: the main body frame is supported on the ground, and at least one group of slide rails are symmetrically arranged at the side edge part of the main body frame; the expansion frame is arranged on the sliding rail in a sliding mode; the first driving mechanism drives the expansion frame to slide in or out of the main body frame, so that the expansion frame is positioned in the main body frame or suspended on the side edge of the main body frame, and when the expansion frame is suspended on the side edge of the main body frame, the main body frame is communicated with the inside of the expansion frame to form an internal space of a movable house; a floor member corresponding to the extension frame, one side of the floor member being hinged to a lower portion of the main body frame; the floor piece is driven by the second driving mechanism to overturn so as to be attached to one vertical side face of the main body frame or the bottom of the expansion frame.
Specifically, the first driving mechanism is a first oil cylinder connected to the lower portion of the main body frame, and an output end of the first oil cylinder is connected with the bottom of the expansion frame.
In order to facilitate the user to go in and out of the internal space of the component, the technical scheme of the invention can be optimized as follows:
a movable two-way expandable house comprises: the main body frame is supported on the ground, and at least one group of slide rails are symmetrically arranged at the side edge part of the main body frame; the expansion frame is arranged on the sliding rail in a sliding mode; the first driving mechanism drives the expansion frame to slide in or out of the main body frame, so that the expansion frame is positioned in the main body frame or suspended on the side edge of the main body frame, and when the expansion frame is suspended on the side edge of the main body frame, the main body frame is communicated with the inside of the expansion frame to form an internal space of a movable house; a floor member corresponding to the extension frame, one side of the floor member being hinged to a lower portion of the main body frame; the floor piece is driven by the second driving mechanism to overturn so as to be attached to one vertical side face of the main body frame or the bottom of the expansion frame.
An access opening leading to the inner space from the outside is formed in one side face of the main body frame, and a porch piece is hinged to one side of the access opening of the main body frame; the lower edge of the porch piece is hinged with the lower edge of the gateway; the outer side of the porch piece is connected with the lower part of the main body frame through a pair of spring rods.
Due to the arrangement of the first driving mechanism and the second driving mechanism, the main body frame inevitably has a certain height from the ground, and the height can be changed according to actual needs, so that a step part capable of meeting the use needs is required to be arranged outside the main body frame, and the technical scheme of the invention can be optimized as follows:
a step piece is arranged on one side of the porch piece; the step piece consists of a plurality of step plates, two groups of support rods, parallel rods and adjusting rods, one ends of the two groups of support rods are symmetrically hinged to the side edge of the porch piece, and the other ends of the two groups of support rods are supported on the ground; two ends of one side of each step plate are connected to the inner sides of the two groups of supporting rods at equal intervals, two ends of the other side of each step plate are connected to the parallel rods at equal intervals, and the step plates are parallel to each other and enable the parallel rods to be located below the supporting rods in parallel; the lower end of the adjusting rod is hinged with the middle part of the parallel rod, and the middle part of the adjusting rod is connected with the middle part of the supporting rod in a longitudinally movable manner.
In order to avoid the rigid damage caused by the interference of motion tracks between the expansion frame and the floor piece, the driving mechanisms of the expansion frame and the floor piece are coordinately controlled by the control unit, so the technical scheme of the invention can be further optimized as follows:
a movable two-way expandable house comprises: the main body frame is supported on the ground, and at least one group of slide rails are symmetrically arranged at the side edge part of the main body frame; the expansion frame is arranged on the sliding rail in a sliding mode; the first driving mechanism drives the expansion frame to slide in or out of the main body frame, so that the expansion frame is positioned in the main body frame or suspended on the side edge of the main body frame, and when the expansion frame is suspended on the side edge of the main body frame, the main body frame is communicated with the inside of the expansion frame to form an internal space of a movable house; a floor member corresponding to the extension frame, one side of the floor member being hinged to a lower portion of the main body frame; the floor piece is driven by the second driving mechanism to overturn so as to be attached to one vertical side face of the main body frame or the bottom of the expansion frame.
One side of the main body frame is connected with a control unit, and the control unit is in signal connection with the first driving mechanism and the second driving mechanism.
Under this kind of structure, in order to strictly control the stroke of expanding the frame:
the technical scheme is further optimized as follows: the main body frame is provided with a stroke detection unit for detecting the stroke of the expansion frame, the stroke detection unit is positioned on one side of the slide rail and is distributed with a plurality of detection points along the sliding direction of the expansion frame, and the detection points respectively detect the moving speed of the expansion frame and transmit detection signals to the control unit.
In order to keep the detection result of the stroke detection unit reliable, the stroke detection unit comprises a detection cylinder and a plurality of micro generators, the detection cylinder is arranged on one side of the guide rail, and a plurality of holes are formed in the side wall of the detection cylinder; the micro generator is arranged in the detection cylinder to form the detection point position, the input end of the micro generator is connected with a friction wheel, and the edge of the friction wheel is in contact with the expansion frame through the hole; the output end of the micro generator is in signal connection with the control unit.
On the basis of adopting the control unit, in order to realize the stable integral posture of the main body framework, the technical scheme is further optimized as follows: the lower part of the main body frame is provided with at least three supporting legs, the main body frame is connected with two electronic gradienters which are respectively arranged transversely and longitudinally, and the electronic gradienters are connected with the control unit; the supporting legs are supporting oil hydraulic cylinders, oil cylinder parts of the supporting oil hydraulic cylinders are supported on the ground, and corresponding piston rods are connected with the main body frame; the control unit is in signal connection with the supporting legs.
Considering the need of arranging a large number of water, electricity and gas channels in practical use, the technical scheme can be optimized as follows:
a movable two-way expandable house comprises: the main body frame is supported on the ground, and at least one group of slide rails are symmetrically arranged at the side edge part of the main body frame; the expansion frame is arranged on the sliding rail in a sliding mode; the first driving mechanism drives the expansion frame to slide in or out of the main body frame, so that the expansion frame is positioned in the main body frame or suspended on the side edge of the main body frame, and when the expansion frame is suspended on the side edge of the main body frame, the main body frame is communicated with the inside of the expansion frame to form an internal space of a movable house; a floor member corresponding to the extension frame, one side of the floor member being hinged to a lower portion of the main body frame; the floor piece is driven by the second driving mechanism to overturn so as to be attached to one vertical side face of the main body frame or the bottom of the expansion frame.
Wherein the main body frame is composed of a plurality of hollow members having a passage therein.
In conclusion, the beneficial effects of the invention are as follows:
the invention utilizes the expansion frame which is arranged on the main body frame in a sliding way to expand the space, has simple and convenient operation and higher space expansion efficiency, and utilizes the turnover floor piece to lay the floor, thereby effectively avoiding the floor fall between the main body space and the expansion space; by arranging the first sealing frame and the second sealing frame between the expansion frame and the main body frame, the space is quickly expanded, and meanwhile, a connecting gap between the moving parts is avoided.
The main body framework is composed of hollow components, internal channels of the hollow components can be used as air-conditioning air circuits and even water and electricity pipelines, and the overall structure is more attractive while the space is further saved.
By arranging the stroke detection unit, the stroke of the expansion frame can be detected, the floor piece does not need to be turned over after the expansion frame is completely unfolded, the two processes can be almost simultaneously carried out, the installation time is saved, and the collision between the floor piece and the expansion frame caused by insufficient extension of the expansion frame can be avoided; in addition, the stroke detection unit can also monitor the working state of the first driving mechanism, and the first driving mechanism is maintained in advance before serious failure occurs, so that serious obstacles to normal use when the first driving mechanism fails when being transported to a scenic spot far away from industrial civilization are avoided.
The electronic level meter is matched with the supporting legs to work, so that the electronic level meter can adapt to the ground with different flatness, and the special leveling operation on the ground is not needed when the electronic level meter is used; the supporting legs adopt the oil cylinder part to contact the ground, so that the integral structure of the invention is more stable; the step piece can be adjusted according to the actual height of the main body frame, and the actual use requirement can be better met.
Drawings
Fig. 1 is a schematic view of the structure of the closest prior art to the present invention.
Fig. 2 is a schematic view of the overall structure of the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the expansion frame and the slide rail.
Fig. 4 is a schematic structural view of the expansion frame in an extended state.
Fig. 5 is a schematic view of an inverted configuration of the floor element.
Figure 6 is a schematic view of the configuration of the porch.
Fig. 7 is a schematic structural diagram of the stroke detection unit and the slide rail.
Fig. 8 is a schematic structural view of the stroke detection unit in a use state.
Fig. 9 is a structural schematic diagram of the support foot in the working state.
Fig. 10 is a schematic view of the structure of the step member.
FIG. 11 is a schematic diagram showing the structural relationship between the shielding film structure and the main frame and the expansion frame.
Fig. 12 is a schematic structural view of a masking film mechanism with a driving motor in a state where a masking film is developed.
Fig. 13 is a schematic structural view of a masking film mechanism with a driving motor in a state where the masking film is folded.
Wherein, the main body frame-1 and the slide rail-11; the floor comprises an expansion frame-2, a first driving mechanism-3, a floor piece-4, a second driving mechanism-5, a shielding film mechanism-7, a shielding film-71, a first expansion frame-21 and a second expansion frame-22; a linkage-401; the device comprises a storage box-72, a push rod-73, a clamping part-74, a stroke detection unit-8, a detection cylinder-81, a friction wheel-82, a supporting foot-9, an oil cylinder part-901, a piston rod-902, a porch piece-6, a spring rod-61, a step piece-62, a step plate-621, a supporting rod-622, a parallel rod-623 and an adjusting rod-624.
Part of the term meanings are explained below:
a shielding film mechanism: a shading film is provided to the outside of the mobile house, and an air layer is formed on the outside of the mobile house while shading light.
A main body frame: as a main body of the whole house frame, a housing space for other components in the state of transportation of the house frame is formed.
Expanding the frame: the house frame is movably connected to the main body frame relative to the main body frame and is accommodated in the main body frame when the house frame is in a transportation state; when the house frame is in a use state, the expansion frame expands from the inside of the main body frame and constructs the internal space of the house frame together with the main body frame.
A first drive mechanism: a mechanism for driving one member in linear motion relative to the other member; in particular, the present application refers to a mechanism for driving the extension frame to move linearly relative to the main frame.
A second drive mechanism: a mechanism for driving one member in linear motion relative to the other member; in particular, in this application, the mechanism is used to drive the floor element to perform a turning motion relative to the main frame via a link mechanism.
A control unit: a unit for receiving the detection signals collected by other components and sending action instructions to corresponding action execution mechanisms; in this application, the present application particularly refers to a unit that receives detection signals from the stroke detection unit and the electronic level and sends an operation command to the first driving mechanism, the second driving mechanism, and the supporting legs.
A hollow member: the interior is a structural member with a hollow channel.
Floor member: and the part is positioned at the bottom of the expansion frame and plays a bearing role on other parts positioned in the internal space of the expansion frame in the use state of the expansion frame.
Detailed Description
The invention is further illustrated by the following figures and examples in conjunction with the description:
as can be seen from fig. 2, 5 and 11, the mobile bidirectional expandable house includes: a main body frame 1 supported on the ground and having at least one set of slide rails 11 symmetrically disposed at side edges thereof; at least one expansion frame 2, which is arranged on the slide rail 11 in a sliding manner; the first driving mechanism 3 drives the expansion frame to slide in or out of the main body frame, so that the expansion frame 2 is positioned in the main body frame or suspended on the side edge of the main body frame, and when the expansion frame 2 is suspended on the side edge of the main body frame 1, the main body frame 1 is communicated with the inside of the expansion frame 2 to form an internal space of a movable house; a floor member 4 corresponding to the extension frame, one side of which is hinged to a lower portion of the main body frame; the second driving mechanism 5 is connected with the floor piece, and the floor piece is overturned under the driving of the second driving mechanism 5 so as to be attached to one vertical side surface of the main body frame 1 or the bottom of the expansion frame; and a shielding film mechanism 7, wherein the shielding film mechanism 7 includes a rotating shaft (not shown) rotatably disposed on the upper portion of the main frame and a shielding film 71 connected to the rotating shaft, and the shielding film 71 is covered outside the main frame or wound on the rotating shaft.
The invention utilizes the shielding film mechanism 7 to adjust the lighting degree of the mobile house, meets the lighting degree requirement and simultaneously can utilize the shielding film mechanism to form an air heat insulation layer on the outer side of the mobile building.
In order to realize the adjustment of the shielding film rolling state by the shielding film mechanism, the shielding film mechanism can adopt the following structure:
as shown in fig. 12 and 13, the masking film mechanism 7 further includes a storage box 72, a push rod 73 and a driving motor (not shown in the drawings), the storage box 72 is longitudinally disposed on the top of the main frame, the rotating shaft is rotatably disposed in the storage box 72, the driving motor is drivingly connected to the rotating shaft, and one end of the push rod is hinged to the outer side surface of the expansion frame; when the expansion frame 2 extends out of the main body frame, the shielding film extends to the lower part of the outer side of the expansion frame from the side opening of the storage box, and the other end of the ejector rod 73 abuts against the middle of the shielding film, so that the shielding film covers the outer side of the main body frame, and the part of the shielding film above the expansion frame is trapezoidal, so that the rainproof and windproof functions are better.
In order to ensure that the state of the ejector rod can be fixed when the expansion frame is positioned in the main body frame, the mobile house frame is further optimized as follows: the upper portion lateral surface of main body frame 1 is provided with the joint portion 74 corresponding with the ejector pin, and when expanding the frame and removing inside the main body frame, the upper portion joint of ejector pin is in joint portion 74. The clamping portion 74 is an annular member provided with an opening on a side facing the stem, and is made of an elastic material.
When the driving motor rotates forwards, the shielding film is released from the storage box and extends downwards to the outer side of the expansion frame under the action of gravity; when the driving motor rotates reversely, the main part of the shielding film is stored in the storage box, and the edge of the shielding film can be provided with a limiting block so that the edge is finally connected to the end part of the ejector rod to facilitate the next unfolding; of course, the shielding film may be completely accommodated in the storage case.
As can be seen from fig. 2 and 3, there are two sets of slide rails 11, and the two sets of slide rails are parallel to each other; correspondingly, there are two expansion frames 2, namely a first expansion frame 21 and a second expansion frame 22; the first expansion frame and the second expansion frame can respectively slide on the two sets of slide rails 11 of the main body frame along mutually opposite directions. By the implementation mode, when the two expansion frames extend to two sides of the main body frame, torsion generated by the expansion frames relative to the main body frame can be balanced to a certain degree, so that the overall structure is more stable; and because the first expansion frame is longer than and higher than the second expansion frame, the invention can obtain larger internal space in the use state under the condition of not increasing the structural size of the main body frame.
Of course, the combination relationship between the extended frame, the first driving mechanism, the floor member and the second driving mechanism is not limited to the aforementioned preferred manner, for example, an extended frame and a fixed display unit are arranged on the main frame in a reverse sliding manner, the extended frame is provided with the floor member and the corresponding second driving mechanism, the fixed display unit is driven by the first driving mechanism, a form that the floor member is fixedly arranged at the bottom of the extended frame is also feasible, and the extended frame and the fixed display unit can play a role in mutual balance.
As can be seen from fig. 5, the outer side surface of the floor member 4 is connected with a link mechanism 401; the second driving mechanism 5 is a second oil cylinder connected to the lower portion of the main body frame, and an output end of the second oil cylinder is connected to the link mechanism 401 to drive the floor member to turn around the lower portion of the main body frame.
As shown in fig. 2 and 4, the main body frame 1, the first expansion frame 21, and the second expansion frame 22 are all rectangular frames, and the two sets of slide rails 11 are respectively arranged on the inner sides of the two longitudinal ends of the main body frame along the transverse direction; the first expander frame 21 is longer and higher than the second expander frame 22; and the transverse two side surfaces of the main body frame are respectively provided with a first sealing frame and a second sealing frame which are in contact connection with the upper parts of the first expansion frame and the second expansion frame.
The expansion frame arranged on the main body frame in a sliding mode is used for carrying out space expansion, the operation is simple and convenient, the space expansion efficiency is high, the turnover type floor piece is used for laying the floor, and the floor fall between the main body space and the expansion space is effectively avoided. By arranging the first sealing frame and the second sealing frame between the expansion frame and the main body frame, the space is quickly expanded, and meanwhile, a connecting gap between the moving parts is avoided.
As can be seen from fig. 2 and 6, a doorway leading from the outside to the internal space is provided on one side surface of the main body frame 1, and a doorway side of the main body frame is hinged to a doorway member 6. The lower edge of the porch piece 6 is hinged with the lower edge of the entrance; the outer side of the porch member is connected to the lower portion of the body frame by a pair of spring rods 61.
One side of the main body frame is connected with a control unit, and the control unit is in signal connection with the first driving mechanism 3 and the second driving mechanism 5. The main body frame 1 is provided with a stroke detection unit 8 for detecting the stroke of the expansion frame, the stroke detection unit 8 is positioned on one side of the slide rail, and a plurality of detection points are distributed along the sliding direction of the expansion frame, and the detection points respectively detect the moving speed of the expansion frame and transmit detection signals to the control unit.
As can be seen from fig. 7 and 8, the stroke detection unit 8 includes a detection cylinder 81 and a plurality of micro generators (not labeled in the figure), the detection cylinder 81 is disposed at one side of the guide rail, and a plurality of holes (not labeled in the figure) are disposed on a side wall of the detection cylinder; the microgenerators are arranged in the detection cylinder at equal intervals (or at any interval) to form detection points, the input end of the microgenerators is connected with a friction wheel 82, and the edge of the friction wheel is in contact with the expansion frame through the hole; the output end of the micro generator is in signal connection with the control unit. When the first expansion frame extends outwards from the inside of the main body frame, all the friction wheels of all the corresponding micro generators rotate under the action of the friction force of the first expansion frame, so that all the micro generators corresponding to the first expansion frame generate electricity; when the output electric quantity of the first micro generator in the direction opposite to the moving direction of the first expansion frame is 0, the first expansion frame can be judged to slide by the stroke corresponding to the first micro generator, and the like, so that the stroke of the first expansion frame can be monitored in real time, and the overturning process of the corresponding floor piece can be started under the condition that the first expansion frame slides out enough stroke so as to ensure that the corresponding floor piece cannot be in rigid collision with the first expansion frame.
And because the oil cylinder driving mechanism usually has the common problems of the oil cylinder, such as the piston rod does not move due to insufficient oil cylinder pressure, the oil cylinder pressure is sufficient but the piston rod still does not move, the driving speed does not reach the specified value, and the like, the invention is usually used in the scene which is far away from the modern industrial civilization and has better natural scenery, so that once the problems occur, the invention is difficult to maintain in time. The problem of the oil cylinder is a gradual process, and the oil cylinder can be maintained in advance through the working performance before serious problems occur, so that the situation is avoided.
In view of this, the control unit of the present invention may draw a time-speed curve graph during the movement of the expansion unit according to the electric quantity output by the micro-generator, when the present invention is shipped and used, the first driving mechanism is in an optimal movement state, the time-speed curve graph at this time is used as a standard graph, the time-speed curve graph after the present invention is put into use is compared with the standard graph, and when the deviation between the two is large, it may be determined that the working state of the first driving mechanism is abnormal, so as to actively maintain the first driving mechanism.
Similarly, the stroke detection unit may also adopt other common structures, such as a pressure-sensitive or capacitive stroke switch, however, the processing method of the position information is still the aforementioned processing method, and the above technical effects can also be obtained, but in consideration of the use environment of the present invention, the present invention preferably selects such a stroke detection unit with a stable detection state as shown in fig. 7 and fig. 8.
Referring to fig. 2 and 9, at least three supporting legs 9 are disposed at the lower portion of the main frame 1, two electronic levels (not labeled in fig. 9) disposed horizontally and longitudinally are connected to the main frame, and the electronic levels are connected to the control unit; the supporting feet 9 are supporting oil hydraulic cylinders, the cylinder portions 901 of the supporting oil hydraulic cylinders are supported on the ground, and the corresponding piston rods 902 are connected with the main body frame; the control unit is in signal connection with the supporting legs.
Specifically, four supporting feet 9 are provided, and are distributed on the lower parts of the longitudinal two ends of the main body frame in a pairwise symmetrical manner; the upper part of the support leg is connected to the main body frame to be horizontally movable by the driving of the corresponding horizontal telescopic cylinder 91.
The main body frame 1 is composed of a plurality of hollow components with channels inside; the internal channel of the hollow component can be used as an air-conditioning air circuit and even a water and electricity pipeline, so that the whole structure is more attractive while the space is further saved. One side of the porch member 6 is provided with a step member 62. The details of the step part 62 are shown in fig. 10, the step part 62 is composed of a plurality of step plates 621, two sets of support rods 622, parallel rods 623 and adjusting rods 624, one ends of the two sets of support rods 622 are symmetrically hinged to the side edge of the porch part, and the other ends of the two sets of support rods 622 are supported on the ground; two ends of one side of the step plate 621 are equidistantly connected to the inner sides of the two groups of support rods, two ends of the other side of the step plate are respectively equidistantly connected to the parallel rods, the step plates are mutually parallel, and the parallel rods 623 are parallelly arranged below the support rods; the lower end of the adjusting rod 624 is hinged with the middle of the parallel rod, the middle of the adjusting rod 624 is connected with the middle of the supporting rod in a longitudinally movable manner, specifically, the middle of the adjusting rod 624 runs through the adjusting hole in the middle of the supporting rod, and the adjusting rod is provided with threads in the middle and matched with an adjusting nut, so that the adjusting rod can be adjusted according to the actual height of the main body frame, and the actual use requirement can be better met.