阅读说明：本技术 一种基坑混凝土支撑梁梁底拆模装置和拆模方法 (Foundation pit concrete support beam bottom form removal device and form removal method ) 是由 肖培磊 古正华 赵树山 王左同 王佳玉 陈默 赵宗元 于 2020-11-11 设计创作，主要内容包括：本发明公开一种基坑混凝土支撑梁梁底拆模装置和拆模方法,所述装置的拆模箱体包括四个底杆和四个顶杆,底杆依次首尾连接构成下平面框,顶杆依次首尾连接构成上平面框,所述下平面框和所述上平面框的角位置处之间分别连接有立柱,左侧相邻的两个立柱、或右侧相邻的两个立柱的中间部分和两端部分之间分别通过螺栓连接；所述上平面框上安装有吊钩和定向滚轮；左侧两个相邻的立柱之间、及右侧两个相邻的立柱之间分别连接有至少两个横向的爬梯杆；每相邻的两个立柱下部之间均连接有横向的围杆,所述下平面框上铺设连接有脚手板架；定向滚轮上设置有锁止件,其施工过程便捷、劳动强度低,减少施工工期,降低施工成本。(The invention discloses a foundation pit concrete supporting beam bottom form removing device and a form removing method, wherein a form removing box body of the device comprises four bottom rods and four ejector rods, the bottom rods are sequentially connected end to form a lower plane frame, the ejector rods are sequentially connected end to form an upper plane frame, stand columns are respectively connected between the angular positions of the lower plane frame and the upper plane frame, and the middle parts and the two end parts of two adjacent stand columns on the left side or two adjacent stand columns on the right side are respectively connected through bolts; the upper plane frame is provided with a lifting hook and a directional roller; at least two transverse climbing rods are respectively connected between two adjacent upright columns on the left side and between two adjacent upright columns on the right side; a transverse surrounding rod is connected between the lower parts of every two adjacent upright posts, and a scaffold frame is paved and connected on the lower plane frame; be provided with the locking piece on the directional gyro wheel, its work progress is convenient, low in labor strength, reduces construction period, reduces construction cost.)

1. A foundation pit concrete supporting beam bottom form removal device comprises a form removal box body and is characterized in that the form removal box body comprises four transverse bottom rods (6) and four transverse ejector rods (601), the ejector rods (601) are respectively positioned above the bottom rods (6), the bottom rods (6) are sequentially connected end to form a rectangular closed lower plane frame, the ejector rods (601) are sequentially connected end to form a rectangular closed upper plane frame, a vertical upright post (5) is respectively connected between the angular positions of the lower plane frame and the upper plane frame, and two adjacent upright posts (5) on the left side or the middle parts and two end parts of two adjacent upright posts (5) on the right side are respectively connected through bolts (3); the upper plane frame is provided with a lifting hook (1) and a directional roller (2); at least two transverse climbing rods (4) are respectively connected between two adjacent upright columns (5) on the left side and between two adjacent upright columns (5) on the right side; a transverse surrounding rod (501) is connected between the lower parts of every two adjacent upright posts (5), and a scaffold frame (602) is laid and connected on the lower plane frame; the directional roller (2) is provided with a locking piece.

2. A foundation pit concrete support beam bottom form removal device as claimed in claim 1, wherein the ladder bars (4) between two adjacent columns (5) on the left side and between two adjacent columns (5) on the right side are evenly distributed from top to bottom.

3. A foundation pit concrete support beam bottom form removal device as claimed in claim 1, wherein the number of the lifting hooks (1) is two, and the two lifting hooks (1) are evenly distributed on the left side and the right side of the upper plane frame.

4. A foundation pit concrete support beam bottom form removal device as claimed in claim 1, characterized in that the number of the orientation rollers (2) is four, and four orientation rollers (2) are uniformly distributed on the upper plane frame and respectively located at the angular positions of the formed rectangle.

5. A foundation pit concrete supporting beam bottom form removal device as claimed in any one of claims 1-5, characterized in that the inner sides of the columns (5) or the ladder bars (4) are respectively connected with a transverse supporting member, the supporting member comprises a transverse supporting sleeve (8), a supporting inner tube (9) is sleeved in the supporting sleeve (8), the inner end of the supporting inner tube (9) is connected with a supporting seat (10), the side walls of the supporting sleeve (8) and the supporting inner tube (9) are respectively provided with a limiting hole, and a limiting rod (11) is inserted into the limiting hole.

6. A foundation pit concrete support beam bottom form removal device as claimed in any one of claims 1-5, characterized in that the inside of the vertical column (5) or the climbing rod (4) is connected with a transverse support member, respectively, the support member comprises a transverse pulley, and the two ends of the central shaft of the pulley are connected with the inside of the vertical column (5) through transverse support rods, respectively.

7. A foundation pit concrete support beam bottom form removal device as claimed in claim 6, characterized in that two vertical connecting plates (13) are connected to the upright column (5), the outer side of the support sleeve (8) is arranged between the two connecting plates (13), and shaft holes are arranged on the outer side of the support sleeve (8) and the connecting plates (13), and the rotating shaft (12) is inserted into the shaft holes.

8. A method for removing a form of an apparatus for removing a form from the bottom of a foundation pit concrete support beam according to any one of claims 1 to 7, comprising the steps of,

hoisting the form removal box body to a foundation pit supporting beam (7) through a lifting hook (1);

removing bolts (3) connected between the middle parts and the two end parts of two adjacent columns (5) on the left side or two adjacent columns (5) on the right side so as to remove the middle parts of the two adjacent columns (5) on the left side or the two adjacent columns (5) on the right side, and enabling one side of the stripping box body to form an opening structure;

sleeving the form removal box body outside the foundation pit supporting beam (7) through the opening structure;

connecting the middle parts of two adjacent upright columns (5) on the left side or two adjacent upright columns (5) on the right side with the two end parts of the two adjacent upright columns through bolts (3) so that the form removal box body recovers a closed structure;

moving the form removal box body to a required position on the foundation pit supporting beam (7) through a directional roller (2);

the stripping personnel climb into the stripping box body through the ladder climbing rod (4) and are positioned on the scaffold board frame (602) to perform stripping operation.

9. The form removing method of the form removing device for the bottom of the foundation pit concrete support beam is characterized in that after the form is removed, the bolts (3) connected between the middle parts and the two end parts of the two adjacent upright columns (5) on the left side or the two adjacent upright columns (5) on the right side are removed to remove the middle parts of the two adjacent upright columns (5) on the left side or the two adjacent upright columns (5) on the right side, so that one side of the form removing box body forms an opening structure; and then removing the form removal box body with the opening structure from the foundation pit supporting beam (7) sleeved with the form removal box body after the form removal, and hoisting and removing the form removal box body through the lifting hook (1).

10. The method for removing the form of the foundation pit concrete support beam bottom form removing device according to claim 8, wherein the form removing box is removed from the foundation pit support beam (7) after the form is removed, and is hoisted and moved to the next foundation pit support beam (7) to be removed by the hoisting hook (1).

Technical Field

The invention belongs to the technical field of building construction, and particularly relates to a foundation pit concrete support beam bottom form removing device and a form removing method.

Background

At present, in the building construction, because frequently use large-scale foundation ditch, then need generally use foundation ditch supporting beam, along with the degree of depth increase of foundation ditch, the template of supporting beam bottom is demolishd the degree of difficulty and is increased thereupon. The construction method in the prior art is mostly to set up the support body in a supporting beam lower part and demolish, often needs a large amount of manpower and materials, also has increased on the time limit for a project to cause construction cost's increase.

Disclosure of Invention

The invention provides a formwork removing device and a formwork removing method for a foundation pit concrete support beam bottom, which are used for reducing the construction period and the construction cost.

A foundation pit concrete supporting beam bottom form removing device comprises a form removing box body, wherein the form removing box body comprises four transverse bottom rods (6) and four transverse ejector rods (601), the ejector rods (601) are respectively positioned above the bottom rods (6), the bottom rods (6) are sequentially connected end to form a rectangular closed lower plane frame, the ejector rods (601) are sequentially connected end to form a rectangular closed upper plane frame, a vertical upright post (5) is respectively connected between the angular positions of the lower plane frame and the upper plane frame, and two adjacent upright posts (5) on the left side or the middle parts and two end parts of two adjacent upright posts (5) on the right side are respectively connected through bolts (3); the upper plane frame is provided with a lifting hook (1) and a directional roller (2); at least two transverse climbing rods (4) are respectively connected between two adjacent upright columns (5) on the left side and between two adjacent upright columns (5) on the right side; a transverse surrounding rod (501) is connected between the lower parts of every two adjacent upright posts (5), and a scaffold frame (602) is laid and connected on the lower plane frame; the directional roller (2) is provided with a locking piece.

The foundation pit concrete support beam bottom form removal device can also be optimized, and the sizes of the lower plane frame and the upper plane frame are the same.

Preferably, the ladder bars (4) between two adjacent upright posts (5) on the left side and between two adjacent upright posts (5) on the right side are uniformly distributed from top to bottom.

It is also preferable that the number of the hooks (1) is two and the hooks are evenly distributed on the left side and the right side of the upper plane frame.

It is also preferred that the number of orientation rollers (2) is at least three, and when the number of orientation rollers (2) is three, they are mounted on said upper plane frame and distributed at three angular positions of the triangle. And are preferably distributed at three angular positions of a regular triangle.

More preferably, the number of the orientation rollers (2) is four, and the four orientation rollers (2) are uniformly distributed on the upper plane frame and are respectively positioned at the angular positions of the formed rectangle.

Still can be preferred, the inboard of stand (5) or climbing pole (4) is connected with horizontal support piece respectively, support piece includes horizontal support sleeve (8), and support inner tube (9) are established to support sleeve (8) endotheca, and the inner of supporting inner tube (9) is connected with supporting seat (10), all is provided with spacing hole on the lateral wall of support sleeve (8) and support inner tube (9), spacing downthehole gag lever post (11) of having inserted.

It may also be preferred that the insides of the uprights (5) or the ladder bars (4) are each connected with a transverse support, which support comprises a transverse pulley, the two ends of the central shaft of which are each connected with the inside of the upright (5) by means of a transverse strut.

More preferably, the upright post (5) is connected with two vertical connecting plates (13), the outer side of the supporting sleeve (8) is arranged between the two connecting plates (13), the outer side of the supporting sleeve (8) and the connecting plates (13) are both provided with shaft holes, and a rotating shaft (12) is inserted into the shaft holes.

The form removing method of the form removing device for the foundation pit concrete support beam bottom comprises the following steps,

hoisting the form removal box body to a foundation pit supporting beam (7) through a lifting hook (1);

removing bolts (3) connected between the middle parts and the two end parts of two adjacent columns (5) on the left side or two adjacent columns (5) on the right side so as to remove the middle parts of the two adjacent columns (5) on the left side or the two adjacent columns (5) on the right side, and enabling one side of the stripping box body to form an opening structure;

sleeving the form removal box body outside the foundation pit supporting beam (7) through the opening structure;

connecting the middle parts of two adjacent upright columns (5) on the left side or two adjacent upright columns (5) on the right side with the two end parts of the two adjacent upright columns through bolts (3) so that the form removal box body recovers a closed structure;

moving the form removal box body to a required position on the foundation pit supporting beam (7) through a directional roller (2);

the stripping personnel climb into the stripping box body through the ladder climbing rod (4) and are positioned on the scaffold board frame (602) to perform stripping operation.

In the above form removal method, it may also be preferable that after the form is removed, the bolts (3) connected between the middle portions and the two end portions of the two adjacent columns (5) on the left side or the two adjacent columns (5) on the right side are removed to remove the middle portions of the two adjacent columns (5) on the left side or the two adjacent columns (5) on the right side, so that one side of the form removal box body forms an opening structure; and then removing the form removal box body with the opening structure from the foundation pit supporting beam (7) sleeved with the form removal box body after the form removal, and hoisting and removing the form removal box body through the lifting hook (1).

Preferably, after the form removal box is removed from the foundation pit supporting beam (7) after the form is removed, the form removal box is hoisted and moved to the next foundation pit supporting beam (7) needing to remove the form through the lifting hook (1).

The invention can achieve the following beneficial effects:

the beam bottom form removing device and the form removing method for the foundation pit concrete support beam can solve the problem that in the prior art, a frame body is erected at the lower part of the support beam for removing, a large amount of manpower and materials are needed, the construction period is prolonged, and therefore the construction cost is increased.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of an embodiment of the foundation pit concrete support beam bottom form removal device of the invention.

Fig. 2 is a schematic view of a use state of the foundation pit concrete support beam bottom form removal device of the embodiment shown in fig. 1.

Fig. 3 is a flow chart of a method for using the foundation pit concrete support beam bottom form removal device of the embodiment shown in fig. 1.

Fig. 4 is a partial structural view of a support member of another embodiment of the beam bottom form removal device for a foundation pit concrete support beam according to the present invention.

Fig. 5 is an outside view of the support member of the foundation pit concrete support beam bottom form removal device of the embodiment shown in fig. 4.

Fig. 6 is a flow chart of a method for using the foundation pit concrete support beam bottom form removal device of the embodiment shown in fig. 4.

Wherein, 1 is the lifting hook, 2 is directional gyro wheel, 3 is the bolt, 4 is cat ladder pole, 5 is the stand, 501 is the surrounding rod, 6 is the sill bar, 601 is the ejector pin, 602 is scaffold frame, 7 is a foundation ditch supporting beam, 8 is the support sleeve, 9 is for supporting the inner tube, 10 is the supporting seat, 11 is the gag lever post, 12 is the pivot, 13 is the connecting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Example 1

A foundation pit concrete supporting beam bottom form removal device comprises a form removal box body as shown in figure 1, wherein the form removal box body comprises four transverse bottom rods 6 and four transverse ejector rods 601, the ejector rods 601 are respectively positioned above the bottom rods 6, the bottom rods 6 are sequentially connected end to form a rectangular closed lower plane frame, the ejector rods 601 are sequentially connected end to form a rectangular closed upper plane frame, a vertical upright post 5 is respectively connected between the angular positions of the lower plane frame and the upper plane frame, and the middle parts and the two end parts of two adjacent upright posts 5 on the left side or two adjacent upright posts 5 on the right side are respectively connected through bolts 3; the upper plane frame is provided with a lifting hook 1 and a directional roller 2; at least two transverse ladder climbing rods 4 are respectively connected between two adjacent upright columns 5 on the left side and between two adjacent upright columns 5 on the right side; a transverse surrounding rod 501 is connected between the lower parts of every two adjacent upright posts 5, and a scaffold frame 602 is laid and connected on the lower plane frame; the directional roller 2 is provided with a locking piece.

In the foundation pit concrete supporting beam bottom form removal device of the embodiment, an upper plane frame formed by ejector rods 601 and a detachable part formed by the middle parts of upright columns 5 through bolts 3 jointly form a sleeving structure capable of sleeving the foundation pit supporting beam 7; the lower plane frame formed by the bottom rod 6, the scaffold frame 602, the lower part of the upright post 5 and the surrounding rod 501 form a bearing structure capable of bearing the stripping personnel.

The left-right direction in this document refers to the left-right direction shown in fig. 1, and also refers to the direction of the vertical paper surface facing outward and the direction of the vertical paper surface facing inward, respectively, shown in fig. 2.

The form removing method of the form removing device for the bottom of the foundation pit concrete support beam of the embodiment, as shown in fig. 2 and 3, comprises the following steps,

hoisting the form removal box body to a foundation pit supporting beam 7 through a lifting hook 1;

removing the bolts 3 connected between the middle parts and the two end parts of the two adjacent upright columns 5 on the left side or the two adjacent upright columns 5 on the right side so as to remove the middle parts of the two adjacent upright columns 5 on the left side or the two adjacent upright columns 5 on the right side, so that one side of the demolded box body forms an opening structure;

sleeving the form removal box body outside the foundation pit supporting beam 7 through the opening structure;

connecting the middle parts of the two adjacent upright columns 5 on the left side or the two adjacent upright columns 5 on the right side with the two end parts of the two adjacent upright columns 5 through bolts 3, so that the form removal box body recovers a closed structure;

moving the form removal box body to a required position on the foundation pit supporting beam 7 through a directional roller 2;

the stripping personnel climbs into the stripping box body through the climbing ladder rod 4 and just lies on the scaffold board frame 602 to perform stripping operation.

In the above form removal method, it may also be preferable that after the form is removed, the bolts 3 connected between the middle portions and the two end portions of the two adjacent left-side columns 5 or the two adjacent right-side columns 5 are removed, so as to remove the middle portions of the two adjacent left-side columns 5 or the two adjacent right-side columns 5, so that an opening structure is formed on one side of the form removal box body; and then removing the form removal box body with the opening structure from the foundation pit supporting beam 7 sleeved with the form removal box body after the form removal, and hoisting and removing the form removal box body by the lifting hook 1.

It is also preferable that the form removal box is lifted and moved to the next foundation pit supporting beam 7 where the form needs to be removed by the lifting hook 1 after being removed from the foundation pit supporting beam 7 where the form is removed.

Example 2

The foundation pit concrete support beam bottom form removal device in embodiment 1 may further specifically be that the lower planar frame and the upper planar frame have the same size.

It can also be specific, the cat ladder pole 4 between two adjacent stands 5 on the left side, and between two adjacent stands 5 on the right side from top to bottom evenly distributed.

It can also be specific that the number of the lifting hooks 1 is two, and the lifting hooks are evenly distributed on the left side and the right side of the upper plane frame.

More specifically, the number of the directional rollers 2 is four, and the four directional rollers 2 are uniformly distributed on the upper plane frame and are respectively located at the angular positions of the formed rectangle.

Above-mentioned foundation ditch concrete supporting beam bottom form removal device, lifting hook 1 can be for the top be provided with the platelike of through-hole, and lifting hook 1's bottom can weld on last plane frame, the platelike can be triangular plate, like isosceles triangle shaped plate. At least two top beams which are uniformly distributed can be arranged in the upper plane frame, and two ends of each top beam can be respectively connected with the top rods 601 in a welding mode or connected through bolts. The top beam can be a square steel pipe. The direction roller 2 may be a roller that can roll only in the front-rear direction, which is referred to as the left-right direction of fig. 2, respectively. Be provided with the locking piece on directional gyro wheel 2, the locking piece can be the locking pole of being connected through pivot and directional gyro wheel 2's mount pad, for example the upper end of locking pole is connected with directional gyro wheel 2's mount pad through the pivot, the lower extreme of locking pole can be provided with the damping rubber piece, and like this, when needing directional gyro wheel 2 of locking, then through pivot rotatory locking pole downwards for the damping rubber piece contacts with foundation ditch supporting beam 7, through the frictional resistance between damping rubber piece and the foundation ditch supporting beam 7, directional gyro wheel 2 is fixed a position in the locking. The shaft sleeve on the mounting seat on the directional roller 2 is sleeved outside the rotating shaft, and the shaft sleeve and the rotating shaft can be in interference fit, so that the friction resistance of the rotating shaft in the rotation of the shaft sleeve can be improved, and the stability of positioning of the rotating shaft in the shaft sleeve when the damping rubber block is in contact with the foundation pit supporting beam 7 and plays a damping limiting role is improved. Two ends and two end parts of the middle parts of two adjacent upright columns 5 on the left side or two adjacent upright columns 5 on the right side are respectively provided with a screw hole, and the middle parts and the two end parts of the two adjacent upright columns 5 on the left side or two adjacent upright columns 5 on the right side are respectively connected through bolts 3 arranged in the screw holes. The ladder rod 4 can be a square steel rod or a square steel pipe, and can be detachably connected with the upright post 5 through a screw or a bolt, so that the ladder rod 4 can be detached before the form removal box body is lifted, and the lifting weight is reduced. The upright post 5 can be a steel pipe and can be a square steel pipe. The two end parts of the upright post 5 can be connected with the top rod 601 and the bottom rod 6 by welding, and the surrounding rod 501 can be a steel pipe, can be a square steel pipe, and can be connected with the upright post 5 by welding. The bottom rod 6 and the top rod 601 can be both steel tubes or levers, can be square steel tubes or square levers, and can respectively form a lower plane frame and an upper plane frame through welding. The scaffold frame 602 may be a grid-shaped plate, a mesh plate or a plane plate, which may be welded to the bottom bar 6 of the lower plane frame, the scaffold frame 602 may be rectangular, the grid of the grid-shaped plate may be rectangular, and the mesh of the mesh plate may be square. In addition, the distance between the uppermost surrounding rod 501 and the lowermost ladder climbing rod 4 can be greater than the distance between the adjacent surrounding rods 501, and simultaneously can also be greater than the distance between the adjacent ladder climbing rods 4, so that the formwork stripping personnel can conveniently enter the formwork stripping box body from the space between the uppermost surrounding rod 501 and the lowermost ladder climbing rod 4.

Example 3

The foundation pit concrete supporting beam bottom form removal device of any embodiment, as shown in fig. 4 and 5, further, the inner sides of the upright column 5 or the ladder stand rod 4 are respectively connected with a transverse supporting piece, each supporting piece comprises a transverse supporting sleeve 8, a supporting inner tube 9 is sleeved in each supporting sleeve 8, the inner end of each supporting inner tube 9 is connected with a supporting seat 10, limiting holes are formed in the side walls of the supporting sleeves 8 and the supporting inner tubes 9, and limiting rods 11 are inserted into the limiting holes.

Like this, through connecting at the inboard horizontal support piece of four stands 5, perhaps these four support piece are connected on two ladder poles 4 of both sides, and its inner end withstands foundation ditch supporting beam 7's outer wall, can improve the stability and the fastness of form removal box, improve the safety in utilization. Through adjusting the length of supporting inner tube 9 in the support sleeve 8, can adjust support piece's whole length to be applicable to the different distances between stand 5 and the foundation ditch supporting beam 7, through insert gag lever post 11 in spacing downthehole, can the length that the fixed stay inner tube 9 stretched into in the support sleeve 8, thereby fixed support piece's length. The supporting seat 10 can improve the tight damping performance between the inner end of the supporting piece and the outer wall of the foundation pit supporting beam 7, and the firm stability of the supporting structure is improved.

Still further, the support sleeve 8 is a square pipe, and can be a steel pipe. The supporting inner pipe 9 is a square pipe, and can also be a steel pipe. The transverse section of the supporting seat 10 can be an isosceles trapezoid with a short side at the outer side and a long side at the inner side, the longitudinal section of the supporting seat 10 can be square, the square side length of the outer end of the supporting seat 10 is equal to the square side length of the inner end of the supporting inner tube 9, the supporting seat 10 can be a steel structural member, and the outer end of the supporting seat and the inner end of the supporting inner tube 9 can be connected through welding. The limiting rod 11 can be in an L shape or an n shape with a right-angle bending structure to avoid sliding off. When the limiting rod 11 is n-shaped and bent at a right angle, the length of one end of the limiting rod can be larger than that of the other end of the limiting rod. When the limiting rod 11 is in the n shape bent at a right angle, the lengths of the two ends of the limiting rod can be equal, and at the moment, the two ends of the limiting rod can be inserted into the limiting holes, namely the two rows of limiting holes in the side walls of the supporting sleeve 8 and the supporting inner tube 9 are arranged, so that the firm stability of limiting is improved.

The outer side refers to the side of the stripping box body away from the foundation pit supporting beam 7 when the stripping box body is sleeved outside the foundation pit supporting beam 7, and the inner side refers to the side close to the foundation pit supporting beam 7.

More specifically, the upright column 5 or the ladder stand rod 4 is connected with two vertical connecting plates 13, the outer side of the support sleeve 8 is arranged between the two connecting plates 13, the outer side of the support sleeve 8 and the connecting plates 13 are both provided with shaft holes, and the rotating shaft 12 is inserted into the shaft holes.

Therefore, when the form removal box body is not used, the support piece can be integrally rotated downwards to be of a vertical structure through the rotating shaft 12, and storage and transportation are facilitated.

Still further, the connecting plate 13 may be a square plate, and may be a steel plate, and may be welded to the pillar 5. The shaft 12 may be L-shaped or n-shaped with a right-angle bending structure to avoid slipping off, and when the shaft is n-shaped with a right-angle bending structure, the length of one end is preferably greater than that of the other end. The support may be provided at an upper or middle position of the upright 5.

It can also be specific that the inner sides of the upright post 5 or the ladder stand rod 4 are respectively connected with a transverse supporting piece, the supporting piece comprises a transverse pulley, and two ends of a central shaft of the pulley are respectively connected with the inner sides of the upright post 5 through transverse supporting rods. The pulley here also can be four in quantity, through connecting at the inboard pulley of four stands 5, perhaps these four pulleys are connected on two ladder poles 4 of both sides, and the pulley inner withstands foundation ditch supporting beam 7's outer wall, can improve the stability and the fastness of form removal box, improves the safety in utilization. Similarly, the upright column 5 or the ladder stand rod 4 may be connected to two vertical connecting plates 13, the outer side of the support rod of the pulley is disposed between the two connecting plates 13, the outer side of the support rod and the connecting plates 13 are both provided with shaft holes, and the rotating shaft 12 is inserted into the shaft holes.

It can be seen that the support members can also be mounted on the ladder bars 4 on the left and right sides of the demolded box, i.e. the connection plates 13 can also be welded to the ladder bars 4.

The form removing method of the form removing device for the bottom of the foundation pit concrete support beam of the embodiment, as shown in fig. 6, can comprise the following steps,

hoisting the form removal box body to a foundation pit supporting beam 7 through a lifting hook 1;

removing the bolts 3 connected between the middle parts and the two end parts of the two adjacent upright columns 5 on the left side or the two adjacent upright columns 5 on the right side so as to remove the middle parts of the two adjacent upright columns 5 on the left side or the two adjacent upright columns 5 on the right side, so that one side of the demolded box body forms an opening structure;

sleeving the form removal box body outside the foundation pit supporting beam (7) through the opening structure;

rotating the rotating shaft 12 to enable the supporting sleeve 8 to rotate upwards to be a transverse position, pulling out the limiting rod 11, adjusting the length of the supporting inner pipe 9 extending into the supporting sleeve 8, enabling the inner end of the supporting seat 10 to prop against the outer wall of the foundation pit supporting beam 7, inserting the limiting rod 11 into the limiting hole, and fixing the length of the supporting inner pipe 9 extending into the supporting sleeve 8;

connecting the middle parts of the two adjacent upright columns 5 on the left side or the two adjacent upright columns 5 on the right side with the two end parts of the two adjacent upright columns 5 through bolts 3, so that the form removal box body recovers a closed structure;

moving the form removal box body to a required position on the foundation pit supporting beam 7 through a directional roller 2;

the stripping personnel climbs into the stripping box body through the climbing ladder rod 4 and just lies on the scaffold board frame 602 to perform stripping operation. In practical application, the foundation pit concrete support beam bottom form removal device and the form removal method of the embodiment have the following construction effects:

(1) time and labor are saved: according to the traditional method, aiming at a concrete foundation pit supporting beam 7 with the length of 10m, the width of 1m and the height of 10m, the erection of a frame body with the length of 10m, the width of 4m and the height of 8m needs 3 persons and 1 day, the removal of a mold needs 1 person and 0.5 day, the removal of the frame body needs 2 persons and 1 day, and the total amount of 5.5 working days is needed.

By adopting the formwork removing device and the formwork removing method for the foundation pit concrete support beam bottom, the formwork removing work of the foundation pit support beam 7 can be completed only by 2 persons for 0.5 day, and 1 working day is needed in total.

(2) The cost is saved: according to the traditional method, 5.5 labor cost and 5.5 work day construction cost are 200 x 5.5 to 1100 yuan, and the material lease cost is 37.14 yuan for the concrete foundation pit supporting beam 7 with the width of 10m and the height of 1m and the height of 10 m.

In conclusion, the cost for dismantling the supporting beam 7 of each 1m foundation pit is as follows: (1100+37.14)/10 ═ 113.714 yuan.

By adopting the foundation pit concrete support beam bottom form removal device and the form removal method of the embodiment, (1) the labor cost for removing the foundation pit support beam 7 every 10m is 2 multiplied by 0.5 multiplied by 200-200 yuan; (2) the box body is made of field materials, the box body can be recycled, and the material cost can be ignored. In conclusion, the cost for dismantling the supporting beam 7 of each 1m foundation pit is as follows: 200 ÷ 10 ÷ 20 yuan.

(3) The construction period is saved: conventionally, it takes 2.5 days to remove a support beam of 10m length. By adopting the formwork removing device and the formwork removing method for the foundation pit concrete support beam bottom of the embodiment, 0.5 day is needed for removing the foundation pit support beam 7 with the length of 10 m.

In addition, in order to improve the safety of the demolition worker during the operation, the safety rope may be wound around the waist of the demolition worker, and the end of the rope may be fixed to the foundation pit support beam 7. Simultaneously, in order to avoid the template of tearing broken equipment or injuring personnel by a crashing object of tearing down, can set up the safety in the below in the form removal region and enclose the fender region, enclose around keeping off the region promptly safely and enclose fender device, carry out safety isolation.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.