Automatic demoulding device for tunnel central ditch template

Abstract

The utility model discloses an automatic demoulding device for a tunnel central ditch template, which comprises a template component, a demoulding component and a demoulding component, the beam erecting mechanism is arranged above the formwork assembly and used for supporting the formwork assembly; the hinge mechanism is used for connecting the formwork assembly and the beam erecting mechanism; the upper end of the trolley walking lifting mechanism is connected with the beam erecting mechanism, the trolley walking lifting mechanism is used for jacking up or falling down the beam erecting mechanism to achieve installation and demolding of the formwork assembly, and the lower end of the trolley walking lifting mechanism walks on the surfaces of the two sides of the central ditch to achieve displacement of the formwork assembly. External equipment is not needed, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel central ditch construction, in particular to an automatic demoulding device for a tunnel central ditch template. Background Art

[0002] At present, the central ditch of domestic tunnels is constructed by using ditch forming templates based on the reserved ditch outline of the invert.

[0003] There are various forms of ditch formwork, and the following problems exist during construction: (1) The formwork is not an integral structure, and it is troublesome to dismantle, install and move the formwork, which takes a long time and is inefficient; (2) To dismantle and move the formwork, other equipment, such as loaders or hook machines, is required, which takes up space and is cumbersome to operate; (3) The formwork cannot be automatically centered and needs to be aligned. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an automatic demoulding device for the central ditch template of a tunnel, so as to realize the installation, demoulding and movement of the overall template without the aid of external equipment, improve the construction efficiency, and effectively solve the problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic demoulding device for a tunnel center ditch template, comprising:

[0006] The formwork assembly is used to place the concrete within the outline of the reserved ditch of the invert;

[0007] A beam-supporting mechanism is arranged above the formwork assembly and is used to support the formwork assembly;

[0008] A hinge mechanism for connecting the formwork assembly and the beam erection mechanism;

[0009] The trolley travel lifting mechanism has its upper end connected to the beam frame mechanism and is used to lift or lower the beam frame mechanism to achieve installation and demoulding of the template assembly, and its lower end travels on the surfaces on both sides of the central ditch to achieve displacement of the template assembly.

[0010] As a preferred technical solution of the utility model, the template assembly includes a side template and a bottom template. The two side templates are symmetrically arranged on both sides of the upper end of the bottom template, and the connection between the side template and the bottom template is formed by elastic bending. The shape of the side template is the same as the shape of the center ditch.

[0011] As a preferred technical solution of the utility model, a positioning rod is provided at the upper end of the side mold.

[0012] As a preferred technical solution of the utility model, the beam-raising mechanism includes an upper longitudinal beam, a lower longitudinal beam and a connecting rod. The upper longitudinal beam and the lower longitudinal beam are arranged in parallel, and a plurality of connecting rods are evenly distributed between the upper longitudinal beam and the lower longitudinal beam. The lower longitudinal beam is located between two side molds.

[0013] As a preferred technical solution of the utility model, positioning blocks are symmetrically arranged on the outer side surface of the lower longitudinal beam.

[0014] As a preferred technical solution of the utility model, the hinge mechanism is evenly distributed on the lower longitudinal beam, and the hinge mechanism includes a fixed plate chain, a movable plate chain, a pin and a fixed ear plate. The fixed plate chain is arranged at the upper end of the lower longitudinal beam, and the fixed ear plates are respectively fixed at the upper ends of the two side molds. The movable plate chain is arranged between the fixed ear plate and the fixed plate chain, and the connections are all hinged by pins.

[0015] As an optimal technical solution of the utility model, the number of the trolley walking and lifting mechanisms is two, and the two trolley walking and lifting mechanisms are respectively located at the two ends of the length direction of the upper longitudinal beam. The trolley walking and lifting mechanism comprises a trolley frame, a hydraulic cylinder, a connecting frame, a connecting shaft, an active walking wheel group, a driven walking wheel group and a motor. A hydraulic cylinder is arranged at the upper end of the trolley frame, and the telescopic end connecting frame of the hydraulic cylinder is fixedly connected. Cross beams are respectively arranged at the two ends of the upper longitudinal beam, and the connecting frame is rotatably connected to the cross beam through a connecting shaft. An active walking wheel group and a driven walking wheel group are respectively arranged at the lower end of the trolley frame, and the active walking wheel group and the driven walking wheel group respectively walk on the end surfaces on both sides of the upper end of the central ditch, and a motor is arranged at the upper end of the trolley frame, and a driving sprocket is arranged on the output shaft of the motor, and a driven sprocket is arranged on the outer side of the transmission shaft of the active walking wheel group, and chains are sleeved on the outer sides of the active sprocket and the driven sprocket.

[0016] As an optimal technical solution of the utility model, a support frame is provided at the lower end of the trolley frame, and guide wheels are provided at both ends of the support frame. The guide wheels in the trolley walking and lifting mechanism located at the front end and the guide wheels in the trolley walking and lifting mechanism located at the rear end respectively run along the inner side surfaces of the reserved ditch contour of the inverted arch and the formed ditch contour.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: (1) by setting the formwork assembly as a whole and utilizing the elastic connection between the side formwork and the bottom formwork, it is convenient to demould and install the formwork; (2) by connecting the formwork assembly with the beam erecting mechanism to form a whole, the formwork assembly can be demoulded and installed under the action of the trolley walking and lifting mechanism, and can be moved along the surface of the central ditch to carry out concrete pouring at the next workstation, which is easy to operate and saves time and effort; (3) by arranging guide wheels at the front and rear positions on the trolley walking and lifting mechanism, the guide wheels move along the contour of the reserved ditch of the arch and the contour of the formed ditch respectively, ensuring that the formwork assembly is always located at the center of the central ditch, without wasting time on alignment, thereby greatly improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0020] Figure 3 for Figure 1 The view from point B in the middle;

[0021] Figure 4 for Figure 1 Sectional view at CC;

[0022] Figure 5 for Figure 1 The view from point D in the middle;

[0023] Figure 6 It is a schematic diagram of the demoulding state of the utility model.

[0024] In the figure: 1 beam mechanism, 11 upper longitudinal beam, 12 lower longitudinal beam, 13 connecting rod, 14 cross beam, 15 positioning block, 2 hinge mechanism, 21 fixed plate chain, 22 movable plate chain, 23 pin shaft, 24 fixed ear plate, 3 template assembly, 31 side mold, 32 bottom mold, 33 positioning rod, 4 trolley travel lifting mechanism, 41 trolley frame, 42 hydraulic cylinder, 43 connecting frame, 44 connecting shaft, 45 active walking wheel group, 46 driven walking wheel group, 47 motor, 48 support frame, 49 guide wheel, 5 inverted arch reserved ditch profile, 6 formed ditch profile. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the present invention). Figure 1Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0026] See also Figure 1-6 The utility model provides a technical solution: an automatic demoulding device for a tunnel center ditch template, comprising a template assembly 3, the template assembly 3 comprising a side mold 31 and a bottom mold 32, the two side molds 31 are symmetrically arranged on both sides of the upper end of the bottom mold 32, and the connection between the side mold 31 and the bottom mold 32 is formed by elastic bending, and the demoulding and installation of the template assembly 3 are facilitated by the elastic connection between the side mold 31 and the bottom mold 32, and the shape of the side mold 31 is the same as the shape of the center ditch;

[0027] The beam erecting mechanism 1 comprises an upper longitudinal beam 11, a lower longitudinal beam 12 and a connecting rod 13. The upper longitudinal beam 11 and the lower longitudinal beam 12 are arranged in parallel. A plurality of connecting rods 13 are evenly distributed between the upper longitudinal beam 11 and the lower longitudinal beam 12. The lower longitudinal beam 12 is located between two side molds 31.

[0028] The hinge mechanism 2 is evenly distributed on the lower longitudinal beam 12, and the hinge mechanism 2 includes a fixed plate chain 21, a movable plate chain 22, a pin 23 and a fixed ear plate 24. The fixed plate chain 21 is arranged at the upper end of the lower longitudinal beam 12, and the fixed ear plates 24 are respectively fixed to the upper ends of the two side molds 31. The movable plate chain 22 is arranged between the fixed ear plates 24 and the fixed plate chain 21, and the connection points are all hinged through the pin 23.

[0029] There are two trolley travel and lifting mechanisms 4, which are respectively located at the two ends of the length direction of the upper longitudinal beam 11. The trolley travel and lifting mechanism 4 includes a trolley frame 41, a hydraulic cylinder 42, a connecting frame 43, a connecting shaft 44, an active walking wheel group 45, a driven walking wheel group 46 and a motor 47. A hydraulic cylinder 42 is provided at the upper end of the trolley frame 41, and the telescopic end connecting frame 43 of the hydraulic cylinder 42 is fixedly connected. The lifting and lowering of the beam frame mechanism 1 is realized by the extension or contraction of the hydraulic cylinder 42, so as to facilitate the demoulding and installation of the template assembly 3. The two ends of the upper longitudinal beam 11 are respectively provided with cross beams 14, and the connecting frame 43 and The cross beams 14 are rotatably connected by a connecting shaft 44. The lower end of the trolley frame 41 is respectively provided with an active walking wheel group 45 and a driven walking wheel group 46. The active walking wheel group 45 and the driven walking wheel group 46 respectively travel on the end surfaces on both sides of the upper end of the central ditch. The upper end of the trolley frame 41 is provided with a motor 47. A driving sprocket is provided on the output shaft of the motor 47. A driven sprocket is provided on the outer side of the transmission shaft of the active walking wheel group 45. Chains are sleeved on the outer sides of the active sprocket and the driven sprocket. The movement of the trolley frame is achieved by the sprocket-chain. The input ends of the hydraulic cylinder 42 and the motor 47 are electrically connected to the output end of the hydraulic electrical control system.

[0030] Furthermore, in order to ensure that the template assembly 3 is installed in place, a positioning rod 33 is provided at the upper end of the side mold 31. When the positioning rod 33 contacts the end surfaces on both sides of the central ditch, it indicates that the template assembly 3 is installed in place.

[0031] Furthermore, in order to prevent the side molds 31 from moving too far inward during the lifting process, which makes it inconvenient to reset during installation, positioning blocks 15 are symmetrically provided on the outer side surface of the lower longitudinal beam 12.

[0032] In order to ensure that the template assembly 3 is always located at the center position of the central ditch, a support frame 48 is provided at the lower end of the trolley frame 41, and guide wheels 49 are provided at both ends of the support frame 48. The guide wheels 49 in the trolley walking and lifting mechanism 4 located at the front end and the guide wheels 49 in the trolley walking and lifting mechanism 4 located at the rear end respectively run along the inner side surfaces of the reserved ditch contour 5 of the inverted arch and the formed ditch contour 6.

[0033] When in use: after the formwork assembly 3 is installed in place, pour the ditch forming concrete. When the concrete strength reaches the demoulding requirement, demoulding is performed. The hydraulic and electrical control system controls the piston rod of the hydraulic cylinder 42 to extend, the beam erecting mechanism 1 rises, and the two movable plate chains 22 begin to bear force, pulling the two side molds 31 inward to achieve demoulding on both sides;

[0034] The piston rod of the hydraulic cylinder 42 continues to extend, and the two side molds 31 continue to shrink inward. When the two side molds 31 contact the positioning block 15, the side molds 31 no longer shrink, and the bottom mold 32 is lifted together, so that the entire mold assembly 3 is lifted until the mold assembly 3 is higher than the tunnel ground.

[0035] Then start the motor 47, and the two trolley walking and lifting mechanisms 4 drive the beam erection mechanism 1 and the formwork assembly 3 to move forward. During the movement, the guide wheels 49 in the trolley walking and lifting mechanism 4 at the front end and the guide wheels 49 in the trolley walking and lifting mechanism 4 at the rear end move along the inner side of the reserved ditch contour 5 of the invert arch and the formed ditch contour 6 respectively, to ensure that the center line of the formwork assembly 3 coincides with the center of the central ditch. When the beam erection mechanism 1 and the formwork assembly 3 move to the next central ditch construction position, the piston rod of the hydraulic cylinder 42 begins to contract, driving the beam erection mechanism 1 and the formwork assembly 3 to move downward. When the positioning rod 33 on the outside of the side form 31 contacts the tunnel ground, the formwork assembly 3 no longer continues to descend. At this time, the piston rod of the hydraulic cylinder 42 continues to contract, and the movable plate chain 22 applies thrust to the side forms 31 on both sides, and the two side forms 31 stretch outward until the movable plate chain 22 is in a horizontal state, and then concrete pouring begins.

[0036] The utility model can facilitate the demoulding, installation and movement of the template assembly 3 without the need for other equipment, thus saving labor and time and reducing costs; at the same time, by setting the guide wheel 49, it is ensured that the template assembly is always located at the center of the central ditch, without the need for alignment each time, saving time and improving construction efficiency.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic demoulding device for a tunnel center ditch template, characterized in that: include: A formwork assembly (3) is used for pouring concrete in the outline of the reserved ditch of the inverted arch (5). The formwork assembly (3) comprises a side form (31) and a bottom form (32). The two side forms (31) are symmetrically arranged on both sides of the upper end of the bottom form (32). The connection between the side forms (31) and the bottom form (32) is formed by elastic bending. The shape of the side forms (31) is the same as the shape of the central ditch. A positioning rod (33) is arranged at the upper end of the side form (31). A beam-supporting mechanism (1) is arranged above the template assembly (3) and is used to support the template assembly (3); A hinge mechanism (2) for connecting the template assembly (3) and the beam erection mechanism (1); The trolley travel lifting mechanism (4) has an upper end connected to the beam erecting mechanism (1) and is used to lift up or lower the beam erecting mechanism (1) to achieve installation and demoulding of the template assembly (3); and its lower end travels on the surfaces on both sides of the central water ditch to achieve displacement of the template assembly (3).

2. The automatic demoulding device for the tunnel center ditch template according to claim 1 is characterized by: The beam erection mechanism (1) comprises an upper longitudinal beam (11), a lower longitudinal beam (12) and a connecting rod (13); the upper longitudinal beam (11) and the lower longitudinal beam (12) are arranged in parallel; a plurality of connecting rods (13) are evenly distributed between the upper longitudinal beam (11) and the lower longitudinal beam (12); and the lower longitudinal beam (12) is located between two side molds (31).

3. The automatic demoulding device for the tunnel center ditch template according to claim 2 is characterized by: Positioning blocks (15) are symmetrically arranged on the outer side surface of the lower longitudinal beam (12).

4. The automatic demoulding device for the tunnel center ditch template according to claim 2 is characterized by: The hinge mechanism (2) is evenly distributed on the lower longitudinal beam (12), and the hinge mechanism (2) includes a fixed plate chain (21), a movable plate chain (22), a pin (23) and a fixed ear plate (24). The fixed plate chain (21) is arranged at the upper end of the lower longitudinal beam (12), and the fixed ear plate (24) is respectively fixed to the upper ends of two side molds (31). The movable plate chain (22) is arranged between the fixed ear plate (24) and the fixed plate chain (21), and the connection points are all hinged through the pin (23).

5. The automatic demoulding device for the tunnel center ditch template according to claim 2 is characterized by: The number of the trolley travel and lifting mechanisms (4) is two, and the two trolley travel and lifting mechanisms (4) are respectively located at the two ends of the length direction of the upper longitudinal beam (11). The trolley travel and lifting mechanisms (4) include a trolley frame (41), a hydraulic cylinder (42), a connecting frame (43), a connecting shaft (44), an active travel wheel group (45), a driven travel wheel group (46) and a motor (47). The upper end of the trolley frame (41) is provided with a hydraulic cylinder (42), and the telescopic end of the hydraulic cylinder (42) is fixedly connected to the connecting frame (43). The two ends of the upper longitudinal beam (11) are respectively provided with cross beams (14). The connecting frame (43) is rotatably connected to the crossbeam (14) via a connecting shaft (44); a driving wheel group (45) and a driven wheel group (46) are respectively provided at the lower end of the trolley frame (41); the driving wheel group (45) and the driven wheel group (46) respectively travel on the upper side end surfaces of the central water ditch; a motor (47) is provided at the upper end of the trolley frame (41); a driving sprocket is provided on the output shaft of the motor (47); a driven sprocket is provided on the outer side surface of the transmission shaft of the driving wheel group (45); and chains are sleeved on the outer sides of the driving sprocket and the driven sprocket.

6. The automatic demoulding device for the tunnel center ditch template according to claim 5 is characterized by: A support frame (48) is provided at the lower end of the trolley frame (41), and guide wheels (49) are provided at both ends of the support frame (48). The guide wheels (49) in the trolley travel lifting mechanism (4) at the front end and the guide wheels (49) in the trolley travel lifting mechanism (4) at the rear end respectively travel along the inner side surfaces of the inverted arch reserved ditch profile (5) and the formed ditch profile (6).

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