CN114809303A

CN114809303A - Device is built in interim room in building site

Info

Publication number: CN114809303A
Application number: CN202210466900.XA
Authority: CN
Inventors: 叶剑尧; 王铭炜; 李自强; 叶剑晓
Original assignee: Zhejiang Zhengzhan Engineering Project Management Co ltd
Current assignee: Zhejiang Zhengzhan Engineering Project Management Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-07-29
Anticipated expiration: 2042-04-29
Also published as: CN114809303B

Abstract

The application relates to the field of constructional engineering, in particular to a temporary building device for a construction site, which comprises a bottom plate, a top plate, folding side plates, a door plate and window plates; the folding side plates comprise a lower side plate which is rotatably connected to the bottom plate and an upper side plate which is rotatably connected to the top plate and hinged with the lower side plate; an outer pipe connected with four corners of the top plate through first ropes is arranged above the top plate, an inner rod slides up and down in the outer pipe, and the upper end of the inner rod is fixedly connected with a hanging ring; an elastic clamping mechanism for locking the relative positions of the inner rod and the outer tube is arranged between the inner rod and the outer tube; a secondary lifting mechanism is arranged between the inner rod and the outer tube, and the secondary lifting mechanism can enable the inner rod to break away from the elastic clamping mechanism and generate secondary lifting relative to the outer tube in the lifting process of the bottom plate; a stay bar is arranged between the two upper side plates, and a downward moving mechanism which moves the stay bar downwards to prop open the two upper side plates when the inner rod is lifted for the second time is arranged between the top plate and the upper side plates. This scheme has promoted the efficiency of buildding of the interim room in building site.

Description

Device is built in interim room in building site

Technical Field

The application relates to the field of constructional engineering, in particular to a temporary building device in a construction site.

Background

The temporary house on the construction site is generally used for temporary living of constructors, such houses are generally formed by taking light steel as a framework, taking a sandwich plate as a surrounding material, performing space combination by using a standard modulus series, and finally performing fastening connection between components through bolts. Although the temporary building on the construction site is simple in structural design, workers need to spend a great deal of time and energy on assembling and connecting the light steel and the sandwich plates in the actual installation process, and the construction efficiency of the temporary building on the construction site is seriously reduced.

Disclosure of Invention

For the convenient interim room in workman's installation building site, promote the efficiency of buildding of the interim room in building site, this application provides a device is built in the interim room in building site.

The application provides a device is built in interim room in building site adopts following technical scheme:

a temporary building device for a construction site comprises a bottom plate, a top plate positioned right above the bottom plate, a folding side plate arranged between the bottom plate and the top plate, a door plate hinged on one end of the bottom plate, and a window plate hinged on the other end of the bottom plate; the folding side plates comprise a lower side plate which is rotatably connected to the bottom plate and an upper side plate which is rotatably connected to the top plate and hinged with the lower side plate; an outer pipe connected with four corners of the top plate through first ropes is arranged above the top plate, an inner rod slides up and down in the outer pipe, and the upper end of the inner rod is fixedly connected with a lifting ring; an elastic clamping mechanism for locking the relative positions of the inner rod and the outer tube is arranged between the inner rod and the outer tube; a secondary lifting mechanism is arranged between the inner rod and the outer tube, and the secondary lifting mechanism can enable the inner rod to break away from the elastic clamping mechanism and generate secondary lifting relative to the outer tube in the lifting process of the bottom plate; a stay bar is arranged between the two upper side plates, and a downward moving mechanism which moves the stay bar downwards to prop open the two upper side plates when the inner rod is lifted for the second time is arranged between the top plate and the upper side plates.

Through adopting above-mentioned technical scheme, the workman controls the loop wheel machine and promotes rings and interior pole, and the outer tube will be lifted along with interior pole under elasticity latch mechanism's effect, and the first rope between outer tube and the roof can be tightened and upwards carry and draw roof and folding curb plate, and upper plate and lower curb plate become vertical expansion state from horizontal folding state gradually. When the bottom plate applys decurrent pulling force to interior pole, secondary lifting mechanism can let interior pole shake off elasticity latch mechanism, interior pole will continue one section distance of upwards sliding relative the outer tube under the lifting action of loop wheel machine, interior pole by the in-process of secondary lifting, move down the mechanism and can order about the vaulting pole downstream, the vaulting pole will outwards strut two upper side boards simultaneously to let folding curb plate can become vertical expansion state more smoothly and fast, rotatory door plant and luffer board are to erectting the state again at last, the device just is installed successfully in building site temporary housing. This scheme only needs roof, folding curb plate, bottom plate, door plant and the luffer board of connecting to expand, and the device has just been accomplished to building the interim room in building site and has built, and the workman need not to consume a large amount of time and energy and assemble and connect in light steel and battenboard, has promoted the efficiency of building of the interim room in building site greatly.

Preferably, the elastic clamping mechanism comprises a groove formed in the side wall of the inner rod, a clamping groove formed in the inner side wall of the outer tube and capable of being aligned to the groove, a clamping column embedded in the groove in a sliding mode, and a spring arranged in the groove and used for pushing the clamping column into the clamping groove.

Through adopting above-mentioned technical scheme, the spring can be with the notch of the ejecting recess of card post, lets the card post wear out the one end of recess notch simultaneously and inserts in the draw-in groove, so the relative position of outer tube and interior pole just can be locked. The elastic clamping mechanism is simple and practical in structure, and brings convenience to workers to lock the outer pipe and the inner rod together.

Preferably, the secondary lifting mechanism comprises a retraction inclined plane which is arranged on one end of the clamping column, which is far away from the spring, and is connected with the edge of the upper side of the clamping groove, and the clamping column can automatically retract into the groove under the action of the retraction inclined plane in the lifting process of the bottom plate; the secondary lifting mechanism also comprises a limiting inclined plane which is circumferentially arranged on the inner side wall of the outer pipe and is used for the end part of the clamping column to abut against, and the inner diameter of the limiting inclined plane is gradually reduced from bottom to top.

Through adopting above-mentioned technical scheme, after the bottom plate applys decurrent pulling force to the inner rod, the draw-in groove edge can grow gradually with the pressure that contracts between the inclined plane, under the direction that contracts the inclined plane and the conflict at draw-in groove edge, the card post can compression spring and automatic the escape draw-in groove, the card post breaks away from in the draw-in groove and will support tightly on spacing inclined plane, the outer tube just can not move down because of the gravity of self and the pulling force of first rope. After the lifting ring and the inner rod are continuously lifted, the inner diameter of the limiting inclined plane is gradually reduced from bottom to top, so that the clamping column can gradually compress the spring and move upwards, the inner rod can continuously slide upwards for a certain distance relative to the outer pipe, and the inner rod is lifted for the second time. The secondary lifting mechanism is ingenious and simple in structural design, so that the inner rod can smoothly break loose the elastic clamping mechanism and generate secondary lifting relative to the outer pipe.

Preferably, the side wall of the inner rod is sleeved with a limiting ring, and the outer diameter of the limiting ring is larger than the minimum inner diameter of the limiting inclined plane.

Through adopting above-mentioned technical scheme, the condition that pole takes place to break away from at the promotion in-process and outer tube in the spacing ring can effectively be avoided, has ensured building smoothly of building site temporary housing construction device.

Preferably, the downward moving mechanism comprises a sliding chute formed in the inner side surface of the upper side plate along the width direction of the upper side plate, a threaded rod rotatably connected in the sliding chute and having the same length direction as the sliding chute, and sliding blocks slidably attached in the sliding chute and in threaded fit with the threaded rod, wherein two ends of the stay bar are respectively rotatably connected to the two sliding blocks; the downward moving mechanism further comprises a vertical rotating shaft rotatably connected to the top plate, a duplex universal joint arranged between the rotating shaft and the threaded rod, and a rotating assembly arranged on the top plate and used for rotating the two rotating shafts when the inner rod is lifted for the second time.

Through adopting above-mentioned technical scheme, when interior pole relative outer tube takes place to shift up, the runner assembly can order about two pivots and take place rotatoryly, under the linkage effect of duplex universal joint, two threaded rods will take place rotatoryly simultaneously, pull at the screw thread and the spacing of spout down, two sliders will slide towards the bottom plate emergence simultaneously, the vaulting pole will move down and outwards strut two top plates gradually along with two sliders together, carry of first rope and strut under, top plate and bottom plate just can erect fast, make the follow-up rotatory ability of door plant and luffer board more smooth and quick, be favorable to accelerating the efficiency of buildding in the interim room in building site.

Preferably, the fixed cover is equipped with around the winding up roller on the lateral wall of pivot, twines on the winding up roller and has the second rope that is used for lifting door plant and luffer board.

Through adopting above-mentioned technical scheme, when the pivot took place to rotate, can the rolling second rope automatic door plant and luffer board of lifting around the winding up roller, saved the manual lifting door plant of workman and the operation of luffer board, promoted the efficiency of buildding of the interim room in building site greatly. In addition, autogiration's door plant still can play the effect that outwards struts to two lower side plates with luffer boards, lets upper side plate and lower side plate erect fast, accelerates building efficiency in the interim room of building site.

Preferably, guide wheels for guiding the second rope are arranged at both ends of the top plate.

Through adopting above-mentioned technical scheme, the leading wheel can lead to the second rope, and this can let the second rope more smoothly around rolling up on the winding up roller, makes the rotation of door plant and luffer board more smooth.

Preferably, the rotating assembly comprises a gear fixedly sleeved on the side wall of the rotating shaft, a rack which is connected to the upper surface of the top plate in a sliding manner and is meshed with the gear, and a linkage rod hinged between the rack and the inner rod.

By adopting the technical scheme, after the inner rod is continuously lifted relative to the outer pipe, the linkage rod can simultaneously pull the two racks and enable the two racks to be gathered, and under the meshing action of the racks and the gear, the two rotating shafts can simultaneously rotate. The rotating assembly is simple and practical in structure, replaces workers to rotate two rotating shafts simultaneously, and improves building efficiency of the temporary building in the construction site.

Preferably, the two ends of the stay bar are fixedly connected with inserted bars perpendicular to the stay bar, and the slide block is provided with jacks for the inserted bars to be horizontally inserted.

Through adopting above-mentioned technical scheme, the setting of inserted bar and jack has made vaulting pole and slider become detachable connection structure. After the temporary building in the construction site is built, the worker can pull out the inserted bar from the jack, and the stay bar can be taken away from the middle of the two sliding blocks, so that the influence of the stay bar on the life of the worker is greatly reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the bottom plate, the top plate, the folding side plates, the door plate and the window plates are arranged, so that a worker can conveniently install the temporary building in the construction site, and the construction efficiency of the temporary building in the construction site is improved;

2. the arrangement of the outer pipe, the inner rod, the elastic clamping mechanism, the secondary lifting mechanism and the downward moving mechanism can accelerate the efficiency of the complete expansion of the folding side plates and enable the construction of the temporary house in the construction site to be smoother;

3. the arrangement of the limiting ring effectively avoids the situation that the inner rod is separated from the outer pipe in the lifting process;

4. the winding roller and the second rope are arranged, so that the door plate and the window plate are automatically lifted, the two lower side plates are outwards unfolded, and the building efficiency of the temporary building in the construction site is accelerated;

5. due to the arrangement of the inserting rods and the inserting holes, the support rods and the sliding blocks are of a detachable connection structure, and the influence of the support rods on the life of workers is greatly reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic illustration in partial cross-sectional view of an embodiment of the present application;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged schematic view of portion B of FIG. 2;

fig. 5 is an enlarged schematic view of a portion C in fig. 2.

Description of reference numerals: 1. a base plate; 2. a door panel; 3. a window panel; 4. folding the side plates; 41. a lower side plate; 42. an upper side plate; 5. a top plate; 6. a hinge; 7. a fixing ring; 8. a threaded hole; 9. a bolt; 10. an outer tube; 11. a first rope; 12. an inner rod; 13. a hoisting ring; 14. a groove; 15. a card slot; 16. clamping the column; 17. a spring; 18. retracting the inclined plane; 19. a limit inclined plane; 20. a chute; 21. a slider; 22. a threaded rod; 23. a stay bar; 24. a rotating shaft; 25. a duplex universal joint; 26. a gear; 27. a rack; 28. a linkage rod; 29. a limiting ring; 30. a jack; 31. a rod is inserted; 32. a winding roller; 33. a second rope; 34. a guide wheel.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Referring to fig. 1 and 2, the temporary building device for the construction site comprises a bottom plate 1, a door plate 2 hinged to one end of the bottom plate 1, a window plate 3 hinged to the other end of the bottom plate 1, and lower side plates 41 rotatably connected to two sides of the bottom plate 1, wherein the length direction of the lower side plates 41 is the same as that of the bottom plate 1; the temporary building device for the construction site further comprises a top plate 5 located right above the bottom plate 1 and upper side plates 42 rotatably connected to two sides of the top plate 5, the length direction of the top plate 5 is the same as that of the bottom plate 1, the length direction of the upper side plates 42 is the same as that of the top plate 5, the upper side plates 42 and the lower side plates 41 are hinged together through hinges 6, and the upper side plates 42 and the lower side plates 41 form folding side plates 4. After folding curb plate 4 was lifted to vertical expansion state from horizontal folding state, bottom plate 1, roof 5 and folding curb plate 4 just can form the open square pipe in both ends, rotate door plant 2 and luffer board 3 again afterwards and seal the uncovered at square pipe both ends, and the device is just built successfully in building site temporary room.

Referring to fig. 2 and 3, a vertical outer tube 10 is arranged right above the top plate 5, four first ropes 11 are fixedly connected to the outer side wall of the outer tube 10, the four first ropes 11 are distributed on the outer side wall of the outer tube 10 at equal angular intervals, and one ends of the four first ropes 11 far away from the outer tube 10 are respectively connected with four corners of the top plate 5. A vertical inner rod 12 is vertically slid in the outer tube 10, and the upper end of the inner rod 12 is fixedly connected with a hanging ring 13. Four grooves 14 are uniformly formed in the side wall of the inner rod 12 in the circumferential direction, four clamping grooves 15 are formed in the inner side wall of the outer tube 10, and the positions of the four clamping grooves 15 are in one-to-one correspondence with the positions of the four grooves 14 in the vertical direction. A clamping column 16 is embedded in the groove 14 in a sliding manner, and a spring 17 for pushing the clamping column 16 into the clamping groove 15 is fixedly connected in the groove 14. The groove 14, the slot 15, the locking post 16 and the spring 17 constitute an elastic clamping mechanism for locking the relative positions of the outer tube 10 and the inner rod 12. The worker uses the lifting hook on the crane to hook the lifting ring 13, the inner rod 12 is lifted by the crane, the relative position between the inner rod 12 and the outer tube 10 is limited by the clamping column 16, the outer tube 10 can be lifted along with the inner rod 12, the first rope 11 can be tightened and lift the top plate 5, the upper side plate 42 and the lower side plate 41 upwards, convenience is brought to the worker for unfolding the temporary building device in the construction site, and the bottom plate 1 in the stage is stably located on the ground and is not stressed.

Referring to fig. 3 and 4, a retraction inclined surface 18 is opened on one end of the latch 16 away from the spring 17, and the retraction inclined surface 18 is disposed on the upper side of the latch 16. At the initial stage when the crane lifts the inner rod 12, the spring 17 has a large elasticity so that the clamping column 16 does not automatically retract into the groove 14. When the inner rod 12 is pulled by the bottom plate 1, the retraction inclined surface 18 abuts against the upper edge of the slot 15 and allows the clip 16 to automatically retract into the groove 14. The inner side wall of the outer tube 10 is also circumferentially provided with a limit inclined plane 19, the diameter of a circle enclosed by the limit inclined plane 19 is gradually reduced from bottom to top, and the retraction inclined plane 18 and the limit inclined plane 19 form a secondary lifting mechanism. The inside wall of two upper side plates 42 has all been seted up spout 20, and the length direction of spout 20 is the same with upper side plate 42's width direction. A sliding block 21 is attached to each of the two sliding grooves 20 in a sliding mode, a threaded rod 22 arranged along the length direction of each sliding groove 20 is further connected to each sliding groove 20 in a rotating mode, and the threaded rod 22 penetrates through the sliding block 21 in the corresponding sliding groove 20 and is in threaded fit with the sliding block 21. A brace 23 is hinged between the two sliding blocks 21, and the rotating axes at the two ends of the brace 23 are all kept in a horizontal state. Two vertical rotating shafts 24 are rotatably connected to the top plate 5, the positions of the two rotating shafts 24 correspond to the positions of the two threaded rods 22 one by one, the rotating shafts 24 and the corresponding threaded rods 22 are connected together through double universal joints 25, the double universal joints 25 are common and mature connection structures in the market, and synchronous rotation of the rotating shafts 24 and the threaded rods 22 can be achieved. The upper end of the rotating shaft 24 is fixedly sleeved with a gear 26, the upper surface of the top plate 5 is slidably embedded with a rack 27 arranged along the width direction of the top plate 5, the rack 27 can slide along the width direction of the top plate 5, and the rack 27 is meshed with the gear 26. A linkage rod 28 is hinged between the racks 27 and the lower end of the inner rod 12, and the linkage rod 28 can draw the two racks 27 together when the inner rod 12 is lifted for the second time. The gear 26, the rack 27 and the linkage rod 28 form a rotating assembly which simultaneously rotates the two rotating shafts 24. The sliding chute 20, the threaded rod 22, the sliding block 21, the rotating shaft 24, the duplex universal joint 25 and the rotating component form a downward moving mechanism.

When the inner rod 12 is pulled by the bottom plate 1 (as shown in fig. 1), the locking post 16 will be separated from the locking slot 15 due to the retraction inclined surface 18, and the end of the locking post 16 far from the spring 17 will continue to abut against the limiting inclined surface 19, so that the outer tube 10 will not drop suddenly due to its own weight and the pulling force of the rope. As the hook continues to be lifted, the inclined limiting surface 19 allows the locking post 16 to gradually compress the spring 17, the locking post 16 gradually retracts into the groove 14, and the inner rod 12 can move upwards relative to the outer tube 10. With the continuous lifting of the height of the inner rod 12, the two racks 27 are drawn together by the two linkage rods 28, under the linkage action of the racks 27 and the gears 26, the two rotating shafts 24 rotate in opposite directions, then under the transmission of the duplex universal joint 25, the two threaded rods 22 rotate in opposite directions, the slide block 21 moves downwards under the traction of the threads and the limit of the sliding groove 20, the support rod 23 moves downwards along with the slide block 21, the support rod 23 automatically stretches the two upper side plates 42 outwards, so that the upper side plates 42 and the lower side plates 41 can quickly and smoothly change into a vertical state, and the subsequent rotation of the door panel 2 (as shown in fig. 1) and the window panel 3 (as shown in fig. 2) is smoother.

Referring to fig. 3, in order to prevent the inner rod 12 from separating from the outer tube 10 during the secondary lifting process, a coaxial limiting ring 29 is fixedly sleeved on the side wall of the inner rod 12, and the minimum diameter of the circle surrounded by the limiting inclined planes 19 is smaller than the outer diameter of the limiting ring 29.

Referring to fig. 4, two sliders 21 are respectively provided with a horizontal insertion hole 30, and two ends of the stay bar 23 are respectively fixedly connected with an insertion rod 31 inserted into the insertion holes 30. After the device is built in building site temporary housing, the workman can extract inserted bar 31 on vaulting pole 23 from jack 30, and vaulting pole 23 just can be taken away from in the device is built in building site temporary housing, and workman's life just can not receive vaulting pole 23's influence.

Referring to fig. 1, 2 and 4, the upper end of the rotating shaft 24 is also fixedly sleeved with a winding roller 32, and a second rope 33 for lifting the door panel 2 and the window panel 3 is wound on the winding roller 32. Guide wheels 34 for guiding the second ropes 33 are rotatably connected to both ends of the top plate 5. When pivot 24 took place to rotate, vaulting pole 23 can automatic come to move down and strut two top plates 42, can rolling second rope 33 come lifting door plant 2 and luffer boards 3 simultaneously around winding up roller 32 simultaneously, and door plant 2 and luffer boards 3 will spin up and strut two bottom plates 41, and this can let two folding curb plates 4 accomplish more fast and expand, make building of building site interim room building device faster and smoothly.

Referring to fig. 1 and 5, the door panel 2 and the window plate 3 are fixedly connected with fixing rings 7, the lower surface of the top plate 5 is provided with threaded holes 8 facing the fixing rings 7, and the fixing rings 7 are further provided with bolts 9 penetrating through the fixing rings 7 and screwed in the threaded holes 8. After the bolt 9 passes through the fixing ring 7 and is screwed into the threaded hole 8, the door panel 2 or the window panel 3 is successfully locked on the top plate 5, and the door panel 2 and the window panel 3 can be kept in the vertical state more smoothly.

The implementation principle of the embodiment is as follows: when the inner rod 12 is pulled by the bottom plate 1, the locking column 16 is separated from the locking groove 15 due to the retraction inclined surface 18, one end of the locking column 16, which is far away from the spring 17, is continuously abutted against the limiting inclined surface 19, and the outer tube 10 cannot suddenly drop due to the self gravity and the pulling force of the rope. As the hook continues to be lifted, the inclined limiting surface 19 allows the locking post 16 to gradually compress the spring 17, the locking post 16 gradually retracts into the groove 14, and the inner rod 12 can move upwards relative to the outer tube 10. With the continuous lifting of the height of the inner rod 12, the two racks 27 are drawn together by the two linkage rods 28, under the linkage action of the racks 27 and the gears 26, the two rotating shafts 24 rotate in opposite directions, then under the transmission of the duplex universal joint 25, the two threaded rods 22 rotate in opposite directions, the slide block 21 moves downwards under the traction of threads and the limiting of the sliding groove 20, the support rod 23 moves downwards along with the slide block 21, the support rod 23 automatically supports the two upper side plates 42 outwards, and therefore the upper side plates 42 and the lower side plates 41 can quickly and smoothly change into a vertical state, and the subsequent rotation of the door panel 2 and the window panel 3 is more smooth.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a device is built in interim room in building site which characterized in that: comprises a bottom plate (1), a top plate (5) positioned right above the bottom plate (1), a folding side plate (4) arranged between the bottom plate (1) and the top plate (5), a door panel (2) hinged on one end of the bottom plate (1), and a window panel (3) hinged on the other end of the bottom plate (1); the folding side plate (4) comprises a lower side plate (41) which is rotatably connected to the bottom plate (1) and an upper side plate (42) which is rotatably connected to the top plate (5) and hinged with the lower side plate (41); an outer pipe (10) connected with four corners of the top plate (5) through a first rope (11) is arranged above the top plate (5), an inner rod (12) slides in the outer pipe (10) up and down, and the upper end of the inner rod (12) is fixedly connected with a hanging ring (13); an elastic clamping mechanism for locking the relative positions of the inner rod (12) and the outer tube (10) is arranged between the inner rod and the outer tube; a secondary lifting mechanism is further arranged between the inner rod (12) and the outer tube (10), and in the lifting process of the bottom plate (1), the secondary lifting mechanism enables the inner rod (12) to break away from the elastic clamping mechanism and generate secondary lifting relative to the outer tube (10); a stay bar (23) is arranged between the two upper side plates (42), and a downward moving mechanism which moves the stay bar (23) downwards to prop open the two upper side plates (42) when the inner rod (12) is lifted for the second time is arranged between the top plate (5) and the upper side plates (42).

2. A temporary housing construction installation at a construction site according to claim 1, wherein: the elastic clamping mechanism comprises a groove (14) formed in the side wall of the inner rod (12), a clamping groove (15) formed in the inner side wall of the outer tube (10) and capable of facing the groove (14), a clamping column (16) embedded in the groove (14) in a sliding mode, and a spring (17) arranged in the groove (14) and used for pushing the clamping column (16) into the clamping groove (15).

3. A temporary housing construction installation at a construction site according to claim 2, wherein: the secondary lifting mechanism comprises a retraction inclined plane (18) which is arranged on one end of the clamping column (16) far away from the spring (17) and is connected with the edge of the upper side of the clamping groove (15), and the clamping column (16) can automatically retract into the groove (14) under the action of the retraction inclined plane (18) in the lifting process of the bottom plate (1); the secondary lifting mechanism further comprises a limiting inclined plane (19) which is circumferentially arranged on the inner side wall of the outer pipe (10) and is used for the end part of the clamping column (16) to abut against, and the inner diameter of the limiting inclined plane (19) is gradually reduced from bottom to top.

4. A temporary housing construction installation at a construction site according to claim 3, wherein: the side wall of the inner rod (12) is sleeved with a limiting ring (29), and the outer diameter of the limiting ring (29) is larger than the minimum inner diameter of the limiting inclined surface (19).

5. A temporary housing construction installation at a construction site according to claim 1, wherein: the downward moving mechanism comprises a sliding groove (20) formed in the inner side surface of the upper side plate (42) along the width direction of the upper side plate (42), a threaded rod (22) which is rotatably connected in the sliding groove (20) and has the same length direction with the sliding groove (20), and sliding blocks (21) which are slidably attached in the sliding groove (20) and are in threaded fit with the threaded rod (22), wherein two ends of a supporting rod (23) are respectively rotatably connected to the two sliding blocks (21); the downward moving mechanism further comprises a vertical rotating shaft (24) rotatably connected to the top plate (5), a duplex universal joint (25) arranged between the rotating shaft (24) and the threaded rod (22), and a rotating assembly arranged on the top plate (5) and used for rotating the two rotating shafts (24) when the inner rod (12) is lifted for the second time.

6. A temporary housing construction unit at a construction site according to claim 5, wherein: the fixed cover is equipped with around winding up roller (32) on the lateral wall of pivot (24), and it has second rope (33) that are used for lifting door plant (2) and luffer board (3) to twine on winding up roller (32).

7. A temporary housing construction installation at a worksite according to claim 6, characterised in that: and guide wheels (34) for guiding the second ropes (33) are arranged at the two ends of the top plate (5).

8. A temporary housing construction unit at a construction site according to claim 5, wherein: the rotating assembly comprises a gear (26) fixedly sleeved on the side wall of the rotating shaft (24), a rack (27) which is connected to the upper surface of the top plate (5) in a sliding mode and meshed with the gear (26), and a linkage rod (28) hinged between the rack (27) and the inner rod (12).

9. A temporary housing construction unit at a construction site according to claim 5, wherein: the both ends of vaulting pole (23) all link firmly with vaulting pole (23) vertically inserted bar (31), offer on slider (21) and supply inserted bar (31) level male jack (30).