CN111809536A - An integral mobile box culvert formwork and construction method thereof - Google Patents

Abstract

The invention discloses an integral mobile box culvert formwork and a construction method thereof. The box culvert formwork includes a first state and a second state. In the first state, the lifting mechanism is extended to move the first movable frame upward away from the ground. , move the inner top plate to a predetermined height, and at the same time, the first drive mechanism drives the two inner plates to expand outward to a predetermined position, and the outer formwork is arranged outside the inner formwork, so as to facilitate pouring concrete to form a box culvert; in the second state, the first A driving mechanism drives the two inner panels to shrink inward to a predetermined position, the lifting mechanism retracts to move the first movable frame down to the ground, so that the inner template can be moved as a whole by the first trolley, and the second driving mechanism drives the outer panels to be separated from the box culvert. side so that the outer formwork can be moved in its entirety by the second trolley. The box culvert template of the invention can be quickly completed in the process of assembling, disassembling and moving, which can greatly reduce the labor intensity, shorten the production cycle of the box culvert, and reduce the production cost of the box culvert.

Description

An integral mobile box culvert formwork and construction method thereof

technical field

The invention relates to an integral mobile box culvert formwork and a construction method thereof, belonging to the technical field of box culvert construction.

Background technique

Box culvert refers to a culvert built with reinforced concrete box-shaped pipe joints. Box culverts are composed of one or more square or rectangular sections and are generally made of reinforced concrete. The construction of box culverts is generally cast-in-place. The bottom layer is set in the excavated trench, and a layer of concrete cushion is poured. Then the processed steel bars are bound on site, and the inner and outer molds are supported. Larger box culverts are generally poured first. The bottom half of the bottom plate and the side wall, and then the upper part of the side wall and the top plate steel bars are bound, the inner and outer molds are supported, and the upper half of the side wall and the top plate are poured. When the concrete reaches the strength required by the design, the formwork is removed, and soil is backfilled on both sides of the box culvert at the same time.

The traditional way of making box culverts is to transport the components such as the inner formwork and the outer formwork to the site, assemble them in the culvert according to the construction requirements to form a predetermined pouring cavity, and then pour concrete into the cavity, and then remove the formwork after curing and forming. Then move each component to the next segment position before continuing to assemble the pour. In this way, the process of disassembling, transporting and assembling the template is complicated and complicated, which greatly reduces the production cycle of the box culvert.

SUMMARY OF THE INVENTION

Based on the above, the present invention provides an integral mobile box culvert formwork and a construction method thereof, which can realize rapid disassembly, movement and assembly of the inner and outer formwork, and can greatly shorten the production period of the box culvert and reduce the cost.

The technical solution of the present invention is: an integral mobile box culvert template, wherein the box culvert template includes:

The first vehicle includes a first movable frame and a lifting mechanism, the lifting mechanism is arranged on the first movable frame, and the lifting mechanism can drive the first movable frame to approach or move away from the ground;

an inner formwork, including an inner top plate and two inner side plates, the inner top plate is arranged on the top end of the first movable frame, and the two inner side plates are hinged on both sides of the inner top plate respectively;

a first driving mechanism, arranged between the first trolley and the inner formwork, the first driving mechanism can drive the inner formwork to approach or move away from the first trolley;

The outer formwork is enclosed outside the inner formwork, and the outer formwork includes two outer side panels and pull rods, and the two ends of the pull rods are detachably connected to the tops of the two outer side panels;

A second trolley is arranged on the outer side of each of the outer side panels, the second trolley includes a second movable frame and a second driving mechanism, and the second driving mechanism is arranged on the second movable frame , the second driving mechanism can drive the outer plate to move left and right;

Wherein, the box culvert formwork includes a first state and a second state. In the first state, the lifting mechanism extends to move the first movable frame up away from the ground, and move the inner top plate to a predetermined position. At the same time, the first drive mechanism drives the two inner side panels to expand outward to a predetermined position, and the outer formwork is enclosed outside the inner formwork, so as to facilitate pouring concrete to form a box culvert; in the second state, The first drive mechanism drives the two inner side panels to retract inward to a predetermined position, and the retraction of the lift mechanism causes the first movable frame to move down to the ground, so as to move the inner panel as a whole by the first trolley. formwork, the second driving mechanism drives the outer plate to be separated from the side of the box culvert, so as to move the outer formwork as a whole by the second trolley.

In one example, the box culvert template further includes:

A traction device is provided at one end of the box culvert, and in the second state, the first trolley and/or the second trolley is pulled by the traction device to move forward to the next box culvert pouring position.

In one example, the lifting mechanism is a supporting hydraulic oil cylinder, and the supporting hydraulic oil cylinder is arranged at the bottom of the first movable frame, and the bottom of the first movable frame is further provided with a support table, where the After the hydraulic cylinder moves the first movable frame up to the ground, the support platform contacts the ground through the pad.

In one example, the first driving mechanism is a first hydraulic cylinder, the base of the first hydraulic cylinder is fixed on the first movable frame, and the free end of the telescopic rod of the first hydraulic cylinder is connected to the The wall surfaces of the inner side panels are connected, and the first hydraulic cylinder is disposed away from the side where the inner side panels are hinged with the inner top panel.

In one example, a support member is provided above the first hydraulic cylinder, one end of the support member is connected to the wall surface of the inner side plate, and the other end is connected to the first movable frame. In the first state, the inner side plate is jointly supported by the support member and the first driving mechanism to ensure stable pouring.

In one example, the second driving mechanism is a second hydraulic cylinder, the base of the second hydraulic cylinder is fixed on the second movable frame, and the free end of the telescopic rod of the second hydraulic cylinder is connected to the The wall surfaces of the outer side plates are connected, and the second hydraulic cylinder is arranged to expand and contract in the horizontal direction.

In one example, in the first state and the second state, the top end of the outer plate is connected to the pull rod at different positions, wherein in the second state, the outer plate and the The connecting position of the tie rod is far away from the side surface of the box culvert, so that the outer side plate is outwardly separated from the outer side surface of the box culvert.

In one example, in the first state, the inner panel and the outer panel are detachably connected through a plurality of connecting members.

In one example, the inner formwork further includes an inner bottom formwork hinged on the bottom of the inner side panel.

The present invention also provides a construction method of integral mobile box culvert formwork, comprising the following steps:

S1 moving the first trolley and the second trolley to the predetermined pouring position in the culvert;

S2 According to the requirements of the template, the first movable frame is moved up away from the ground through the extension of the lifting mechanism, so that the inner top plate is moved to a predetermined height, and at the same time, the two inner plates are driven by the first driving mechanism. extended to the predetermined location;

S3, according to the requirements of the template, the outer template is arranged outside the inner template, and the outer template and the inner template are fixed as required to form a pouring cavity;

S4 pours concrete into the pouring cavity from above;

S5 After the concrete is poured and cured to meet the requirements, the two inner side panels are driven to shrink inward to a predetermined position by the first drive mechanism, and the first movable frame is moved down to the ground by the retraction of the lifting mechanism;

In S6, after disassembling the two ends of the pull rod from the tops of the two outer side panels, the second drive mechanism drives the outer side panels away from the side of the box culvert, and then connects the two ends of the pull rod with the tops of the two outer panels. The tops of the two outer side panels are fixedly connected, so that the second carts on both sides form a whole;

In S7, the first and second trolleys are moved to the pouring position of the next section in the culvert, and then the construction is performed according to steps S2 to S6, and the process is repeated until the pouring of the box culvert is completed.

The beneficial effects of the present invention are: the box culvert formwork of the present invention includes a first state and a second state. In the first state, the lifting mechanism extends to move the first movable frame up away from the ground, and the inner top plate is moved to a predetermined height, At the same time, the first driving mechanism drives the two inner plates to expand to a predetermined position, and the second driving mechanism can move the two outer plates to a predetermined position, and then the outer formwork and the inner formwork form a pouring cavity, so as to quickly pour concrete to form a box culvert; In the second state, the first driving mechanism drives the two inner side panels to retract inward to a predetermined position, and the lifting mechanism retracts to move the first movable frame down to the ground, so as to move the inner template as a whole by the first trolley. At the same time, the second The driving mechanism drives the outer plate to be separated from the side of the box culvert, so as to move the outer template as a whole through the second trolley. It can be seen from the above process that the box culvert template of the present invention can be quickly completed in the process of assembling, disassembling and moving, which can greatly reduce the labor intensity, shorten the production cycle of the box culvert, and reduce the production cost of the box culvert.

Description of drawings

FIG. 1 is a schematic structural diagram of an integral mobile box culvert formwork according to an embodiment of the present invention (assembled state);

Figure 2 is a schematic structural diagram of an integral mobile box culvert formwork according to an embodiment of the present invention (the lifting mechanism is in an extended state);

Figure 3 is a side view of the first cart;

Figure 4 is a top view of the first car;

Description of reference numbers:

10 The first cart, 11 The first movable frame, 12 The lifting mechanism, 13 The supporting platform, 14 The cushion block;

20 inner template, 21 inner top plate, 22 inner plate, 23 inner bottom template;

30 the first drive mechanism, 31 the support;

40 outer formwork, 41 outer plate, 42 tie rod, 43 connecting member;

50 second cart, 51 second movable frame, 52 second drive mechanism.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation disclosed below.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIGS. 1 to 4 , an integral mobile box culvert formwork according to an embodiment of the present invention includes a first cart 10 , an inner formwork 20 , a first drive mechanism 30 , an outer formwork 40 , a second cart 50 and traction equipment .

The first vehicle 10 mainly plays the role of moving and supporting. It includes a first movable frame 11 and a lifting mechanism 12. The first movable frame 11 includes a frame body and traveling wheels, and a plurality of traveling wheels are installed at the bottom of the frame body so that the frame body can move; the lifting mechanism 12 is a supporting hydraulic cylinder, Several bases for supporting hydraulic cylinders are installed at the bottom of the first movable frame 11, and the supporting hydraulic cylinders can drive the first movable frame 11 to be close to or away from the ground. The support of the first movable frame 11 is suspended, and when the first movable frame 11 needs to be moved, the supporting hydraulic oil cylinder is retracted upward, so that the traveling wheels are in contact with the ground, and then can move.

It should be noted that, in other embodiments, the lifting mechanism 12 may also be a jack, for example.

A number of supporting platforms 13 are also installed at the bottom of the first movable frame 11. After the lifting mechanism 12 moves the first movable frame 11 up to be off the ground, the pads 14 can be installed on the bottom surface of the supporting platform 13, The first movable frame 11 is supported by the cushion block 14 , at this time, the lifting mechanism 12 is no longer subjected to force or is subjected to a little force, which can improve the service life of the first cart 10 .

The inner template 20 includes an inner top plate 21, two inner side plates 22 and an inner bottom template 23, wherein, the inner top plate 21 is installed on the top of the first movable frame 11, and the two inner side plates 22 are hinged on both sides of the inner top plate 21 respectively, Two inner bottom templates 23 are hinged to the bottom of the inner panel 22 .

The first driving mechanism 30 is a first hydraulic cylinder, the base of the first hydraulic cylinder is fixed on the first movable frame 11, the free end of the telescopic rod of the first hydraulic cylinder is connected with the wall surface of the inner plate 22, and the first hydraulic cylinder is The oil cylinder is arranged away from the side where the inner side plate 22 is hinged with the inner top plate 21. When the first hydraulic oil cylinder extends outwards, it can push the inner side plate 22 to move outward, and when the second hydraulic oil cylinder contracts inwardly, it can drive the inner side plate. 22 moves inward. In other embodiments, the first driving mechanism 30 may be various push-type electric or hydraulic rods.

A detachable support member 31 is installed above the first hydraulic cylinder. One end of the support member 31 is connected to the wall surface of the inner side panel 22 , and the other end is connected to the first movable frame 11 . After the first hydraulic cylinder drives the inner side panel 22 to move outward to the pouring position, the support member 31 can be installed between the inner side panel 22 and the first movable frame 11. At this time, the support member 31 and the first hydraulic cylinder together The inner side panel 22 is supported to ensure stability during pouring.

In one example, the support member 31 can be two support rods, one end of the two support rods is fixed at different height positions of the first movable frame 11, and the other end is fixed at the same position of the inner side plate 22 to form a stable triangular structure , which can improve the support and stability effect.

The outer formwork 40 is arranged outside the inner formwork 20 , and then together with the inner formwork 20 forms a casting cavity. The outer formwork 40 includes two outer panels 41 and tie rods 42 , two ends of the tie rods 42 are detachably connected to the tops of the two outer panels 41 , and the two ends of the tie rods 42 can be connected to the tops of the outer panels 41 at different positions. The outer plate 41 and the inner plate 22 can be detachably connected by several connecting members 43, such as screws.

The second cart 50 mainly plays the role of moving and supporting. Including a second movable frame 51 and a second driving mechanism 52, the second movable frame 51 includes a frame body and a walking wheel, and a plurality of walking wheels are installed at the bottom of the frame body, so that the frame body can move; the second driving mechanism 52 is The second hydraulic oil cylinder, the bases of several second hydraulic oil cylinders are installed on the second movable frame 51, and the free ends of the telescopic rods are connected to the wall surface of the outer plate 41, and the second hydraulic oil cylinders are arranged in the horizontal direction. The upper telescopic, when working, the second hydraulic cylinder can drive the outer plate 41 to move left and right, and then move closer to or away from the side of the box culvert. In other embodiments, the second driving mechanism 52 may be various push-type electric or hydraulic rods.

Traction equipment, mainly for traction. The traction equipment is installed at one end of the box culvert, for example, the next box culvert to be poured. During operation, the traction device can pull the first trolley 10 and/or the second trolley 50 to move forward to the next box culvert pouring position. The traction equipment can be a hoist and a traction rope.

It should be noted that when the first trolley 10 and the second trolley 50 have power units themselves, the traction equipment can be omitted.

The box culvert formwork includes a first state and a second state. In the first state, the supporting hydraulic cylinder is extended to move the first movable frame 11 up away from the ground, and the inner top plate 21 is moved up to a predetermined height. At the same time, the first hydraulic cylinder The two inner side panels 22 are driven to expand outward to a predetermined position, and the outer formwork 40 is surrounded by the inner formwork 20 and fixed with the inner formwork 20 to form a pouring cavity, so as to facilitate pouring concrete to form a box culvert; in the second state, the box The culvert has been poured and maintained, the first hydraulic cylinder drives the two inner side panels 22 to shrink inward to a predetermined position, and the supporting hydraulic cylinder shrinks to move the first movable frame 11 down to the ground, so as to move the inner formwork 20 as a whole through the first trolley 10 , the second hydraulic cylinder drives the outer plate 41 to separate from the side of the box culvert, so as to move the outer template 40 through the second trolley 50 as a whole.

In the second state, the connection position of the outer side plate 41 and the pull rod 42 is far away from the side of the box culvert, so that the outer side plate 41 is separated from the outer side of the box culvert, and at this time, the pull rod 42 connects the two outer side plates 41 and the second The cart 50 forms a whole, which is convenient to move as a whole. Otherwise, when the space outside the outer side panel 41 is insufficient and the second cart 50 cannot support the higher outer side panel 41 , it is difficult to move each second cart 50 out separately at this time. In addition, when the second trolley 50 is unstable while driving the outer side plate 41, the second trolley 50 can be fixed in the culvert, for example, fixed on the ground by bolts. When it needs to move, the bolts can be used. Remove it, and then move the two outer side panels 41 and the second cart 50 as a whole.

It should be noted that when in the second state, the inner formwork 20 should be in a suspended state on the first cart 10 so as not to affect the movement of the first cart 10 . If the insole formwork 23 is in contact with the ground, thereby affecting the movement, the insole formwork 23 can be removed, or it can be folded upwards to simply fix it.

The embodiment of the present invention also provides a construction method of integral mobile box culvert formwork, comprising the following steps:

S1 moves the first trolley 10 and the second trolley 50 assembled as required to the predetermined pouring position in the culvert;

S2 According to the requirements of the template, the first movable frame 11 is moved up away from the ground by extending the supporting hydraulic cylinder, so that the inner top plate 21 is moved up to a predetermined height, and then a number of spacers 14 are installed at the bottom of the support table 13 to support the first movable frame 11. While moving the frame 11 , the two inner side plates 22 are driven to expand outward to a predetermined position by the first hydraulic cylinder, and then the support member 31 is installed.

S3 According to the template requirements, the outer template 40 is enclosed outside the inner template 20, the two outer plates 41 are fixed by the tie rods 42, and the outer template 40 and the inner template 20 are fixed as required, such as installing the connecting member 43, etc., so that the outer template A casting cavity is formed between 40 and the inner formwork 20 .

S4 pours concrete into the casting cavity from above the outer formwork 40 .

S5 After the concrete is poured and cured to meet the requirements, the two inner side panels 22 are driven to shrink inward to a predetermined position by the first hydraulic cylinder, and the first movable frame 11 is moved down to the ground by the support of the hydraulic cylinder to shrink.

In S6, after disassembling the two ends of the pull rod 42 from the tops of the two outer side panels 41, the second hydraulic cylinder drives the outer side panels 41 to separate from the side of the box culvert, and then the two ends of the pull rod 42 are fixed to the tops of the two outer side panels 41. connected so that the second carts 50 on both sides are integrated.

In S7, the first trolley 10 and the second trolley 50 are moved to the pouring position of the next section in the culvert through the traction equipment, and then the construction is performed according to steps S2 to S6, and this is repeated until the pouring of the box culvert is completed.

It can be seen from the above process that the box culvert template of the present invention can be quickly completed in the process of assembling, disassembling and moving, which can greatly reduce the labor intensity, shorten the production cycle of the box culvert, and reduce the production cost of the box culvert.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. An integrally movable box culvert template, wherein, the box culvert template includes:

a first trolley (10) comprising a first movable frame (11) and a lifting mechanism (12), wherein the lifting mechanism (12) is arranged on the first movable frame (11), and the lifting mechanism (12) can drive the first movable frame (11) to approach or depart from the ground;

the inner formwork (20) comprises an inner top plate (21) and two inner side plates (22), the inner top plate (21) is arranged at the top end of the first movable frame (11), and the two inner side plates (22) are hinged to two sides of the inner top plate (21) respectively;

a first driving mechanism (30) disposed between the first trolley (10) and the inner formworks (20), the first driving mechanism (30) driving the inner formworks (20) to approach or separate from the first trolley (10);

the outer template (40) is arranged outside the inner template (20) in a surrounding mode, the outer template (40) comprises two outer side plates (41) and a pull rod (42), and two ends of the pull rod (42) are detachably connected with the tops of the two outer side plates (41);

a second carriage (50) provided outside each of the outer panels (41), the second carriage (50) including a second movable frame (51) and a second driving mechanism (52), the second driving mechanism (52) being provided on the second movable frame (51), the second driving mechanism (52) being capable of driving the outer panels (41) to move left and right;

the box culvert template comprises a first state and a second state, in the first state, the lifting mechanism (12) is extended to enable the first movable frame (11) to move upwards to be away from the ground, the inner top plate (21) is moved upwards to a preset height, meanwhile, the first driving mechanism (30) drives the two inner side plates (22) to expand outwards to a preset position, and the outer template (40) is arranged around the inner template (20) to facilitate the pouring of concrete to form a box culvert; in the second state, the first driving mechanism (30) drives the two inner side plates (22) to retract inwards to a preset position, the lifting mechanism (12) retracts to enable the first movable frame (11) to move downwards to the ground so as to integrally move the inner formwork (20) through the first trolley (10), and the second driving mechanism (52) drives the outer side plate (41) to separate from the side surface of the box culvert so as to integrally move the outer formwork (40) through the second trolley (50).

2. The integrally movable box culvert template of claim 1, further comprising:

and the traction equipment is arranged at one end of the box culvert, and in the second state, the first trolley (10) and/or the second trolley (50) are/is pulled by the traction equipment to move forwards to the next box culvert pouring position.

3. The integrally movable box culvert template according to claim 1, wherein the lifting mechanism (12) is a supporting hydraulic oil cylinder, the supporting hydraulic oil cylinder is arranged at the bottom of the first movable frame (11), a bearing platform (13) is further arranged at the bottom of the first movable frame (11), and after the hydraulic oil cylinder moves the first movable frame (11) up to be separated from the ground, the bearing platform (13) is in contact with the ground through a cushion block (14).

4. The integrally movable box culvert template according to claim 1, characterized in that the first driving mechanism (30) is a first hydraulic cylinder, the base of the first hydraulic cylinder is fixed on the first movable frame (11), the free end of the telescopic rod of the first hydraulic cylinder is connected with the wall surface of the inner side plate (22), and the first hydraulic cylinder is arranged at the side far away from the hinge joint of the inner side plate (22) and the inner top plate (21).

5. The integrally movable box culvert template according to claim 4, wherein a support member (31) is arranged above the first hydraulic oil cylinder, one end of the support member (31) is connected with the wall surface of the inner side plate (22), the other end is connected with the first movable frame (11), and in the first state, the support member (31) and the first driving mechanism (30) jointly support the inner side plate (22) to ensure stable pouring.

6. The integrally movable culvert template of claim 1, wherein the second driving mechanism (52) is a second hydraulic cylinder, the base of the second hydraulic cylinder is fixed on the second movable frame (51), the free end of the telescopic rod of the second hydraulic cylinder is connected with the wall surface of the outer side plate (41), and the second hydraulic cylinder is arranged to be telescopic in the horizontal direction.

7. The formwork of claim 1, wherein the top ends of the outer panels (41) are attached to the tie bars (42) at different positions in the first state and in the second state, wherein the outer panels (41) are attached to the tie bars (42) at positions away from the sides of the culvert in the second state so that the outer panels (41) are outwardly spaced from the outer sides of the culvert.

8. The integrally moving box culvert template of claim 1, wherein in the first state, the inner decking (22) is detachably connected to the outer decking (41) by a plurality of connecting members (43).

9. The integrated mobile culvert template of claim 1, characterized in that the inner template (20) further comprises an inner bottom template (23), the inner bottom template (23) hinged at the bottom of the inner side plate (22).

10. The construction method of the integrally movable box culvert template according to any one of claims 1 to 9, characterized by comprising the following steps:

s1 moving the first trolley (10) and the second trolley (50) to a predetermined pouring position in the culvert;

s2, according to the requirement of the template, extending the lifting mechanism (12) to move the first movable frame (11) upwards away from the ground, moving the inner top plate (21) upwards to a preset height, and simultaneously driving the two inner side plates (22) to expand outwards to preset positions through the first driving mechanism (30);

s3, according to the requirement of the template, enclosing the outer template (40) outside the inner template (20), and fixing the outer template (40) and the inner template (20) according to the requirement to form a pouring cavity;

s4, pouring concrete into the pouring cavity from the upper part;

s5, after the requirement of concrete pouring and curing is met, the first driving mechanism (30) drives the two inner side plates (22) to contract inwards to a preset position, and the first movable frame (11) moves downwards to the ground through the contraction of the lifting mechanism (12);

s6, after the two ends of the pull rod (42) are detached from the tops of the two outer side plates (41), the outer side plates (41) are driven to be separated from the side faces of the box culvert through the second driving mechanism (52), and then the two ends of the pull rod (42) are fixedly connected with the tops of the two outer side plates (41), so that the second trolleys (50) on the two sides form a whole;

s7, moving the first trolley (10) and the second trolley (50) to the pouring position of the next section in the culvert, and then performing construction according to the steps S2-S6, and repeating the steps until the box culvert is poured.

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