Construction template for bridge joint construction

Abstract

The utility model relates to the technical field of bridge joints, in particular to a construction formwork for bridge joint construction. The device comprises a lower die plate and a clamping mechanism used for clamping a beam body, the clamping mechanism is arranged on the lower die plate, and the clamping mechanism comprises a gland frame used for pressing the beam body on the lower die plate, a linkage rod arranged on the gland frame, a pressing rod with the upper end hinged to the linkage rod and a clamping die plate hinged to the middle of the pressing rod. The clamping die plate is connected to the lower die plate in a sliding mode, and a lifting device used for lifting the lower end of the pressing rod is arranged on the lower die plate. The device can be suitable for beam bodies of different specifications within a certain range; the device is quick and convenient to mount and dismount, the construction time is saved, and the device cannot damage the surface of the beam body and can be reutilized.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge joints, in particular to a construction template used for bridge joint construction. Background Art

[0002] Most bridge joints are made using the wet joint method. Wet bridge joints refer to prestressed concrete beams that are prefabricated in sections and cantilevered and assembled into large-span continuous beams. Cast-in-place concrete is used between the beams to connect the beams into a whole. In the construction of wet bridge joints, formwork is required to pour concrete in the formwork to achieve the purpose of connecting different continuous beams.

[0003] However, the existing construction formwork is inefficient during installation, and it is necessary to search everywhere for supporting pads of suitable height, and the formwork is connected to the beam body by bolts, which causes damage to the beam body.

[0004] Chinese patent CN202021681735.2 discloses "A construction template for bridge construction joints", publication number CN213417597U, which includes a cast-in-place beam, a tensioning device and a left sleeper. A bottom plate is installed at the bottom of the cast-in-place beam, and a left pull rod is inserted on the bottom plate. At the same time, the lower end of the left pull rod is fixedly connected to the mounting plate, and a right pull rod is installed on the right side of the left pull rod. The upper end of the left pull rod passes through a pressure plate, a steel pipe and a limit plate in sequence and is fixedly connected to a fixing nut; the left sleeper is placed on the upper left side of the cast-in-place beam, and the right sleeper is placed on the upper right side of the cast-in-place beam, and a mold cavity is provided inside the cast-in-place beam, and a pressure plate is placed above the mold cavity, a steel pipe is installed on the upper end of the pressure plate, and a limit plate is placed on the upper end of the steel pipe, and an edge pull column is prefabricated on the upper left side of the cast-in-place beam. The device uses a left tie rod and a right tie rod to pass through the bottom plate and the top plate, so that the two templates fit tightly at the upper and lower ends of the bridges on both sides. However, the device has some defects: after the template is used, the left tie rod and the right tie rod will be frozen in the concrete due to the pouring of concrete, making it impossible to disassemble it later. Utility Model Content

[0005] In order to solve the above problems of the prior art, the utility model provides a construction template for bridge joint construction, which can be simply and quickly installed at the joint position of the beam body without causing damage to the beam body.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a construction template for bridge joint construction, comprising a lower template and a clamping mechanism for clamping a beam body, the clamping mechanism being arranged on the lower template, the clamping mechanism comprising a pressure cover frame for pressing the beam body onto the lower template, a linkage rod arranged on the pressure cover frame, a pressure rod hinged to the linkage rod at the upper end, and a clamping template hinged to the middle part of the pressure rod, the clamping template being slidably connected to the lower template, and a lifting device for lifting the lower end of the pressure rod is arranged on the lower template.

[0007] With the above structural design, the lower template and the clamping template are installed at the position where a joint is required between the two beams, and the pressure cover frame is installed at the joint position of the beam body using a pressure rod. The two ends of the pressure cover frame press the ends of the beam body respectively, and the device is stably installed at the joint position of the beam body. The device is quick and easy to install and will not cause damage to the surface of the beam body.

[0008] Preferably, the gland frame comprises a bearing plate fixedly connected to the linkage rod, a support rod fixedly connected to the bearing plate, and a side plate sleeved on the support rod, wherein the side plate is fixedly connected to a support.

[0009] With the above structural design, the side plates on the gland frame are adjusted according to the width of the gap between the beams, so that the distance between the side plates adapts to the width of the gap.

[0010] Preferably, a clamping bolt is passed through the side plate, and an end of the clamping bolt contacts the support rod.

[0011] With the above structural design, after the side panel moves, the side panel is fixed to prevent the side panel from moving due to interference from external factors, thereby preventing the support on the side panel from moving.

[0012] Preferably, a fixing plate is fixedly connected to the clamping template, a fixing screw is threadedly passed through the fixing plate, a fixing hole matching the fixing screw is provided on the lower template, and an end of the fixing screw is fixedly connected to the rotating disk.

[0013] By adopting the above structural design, the clamping template is moved according to the beams of different widths, and the clamping template is fixed after being moved, so that the device can be applicable to beams of different widths.

[0014] Preferably, the lifting device includes a support fixedly connected to the lower template, a rotating shaft rotatably connected to the upper end of the support, and a rope for connecting the rotating shaft and the lower end of the pressure rod, and a handwheel for driving the rotating shaft to rotate is provided on the rotating shaft.

[0015] With the above structural design, the lower end of the pressure rod is lifted by winding up the rope, so that the pressure cover frame tightly presses the two sides of the beam body.

[0016] Preferably, a turbine is fastened and sleeved on the rotating shaft, a worm is constantly meshed on the turbine, the worm is rotatably connected to the inside of the pillar, the upper end of the worm passes through the pillar, and the worm is fixedly connected to the handwheel.

[0017] With the above structural design, when the staff turns the hand wheel to reel in the rope, the rotating shaft has a self-locking function, and after the lower end of the pressure rod is lifted to a suitable height, the height can be maintained.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1) Within a certain range, it is easy to adjust according to the size of the bridge joint and the width of the bridge, so that it can be suitable for beams of different specifications.

[0020] 2) After the beam body is joined, the device can be removed from the beam body without causing damage to the surface of the beam body and can be reused.

[0021] 3) The device is quick and easy to install and disassemble, saving construction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the utility model installed on the beam body;

[0023] Figure 2 It is a schematic diagram of the structure of the utility model from the left;

[0024] Figure 3 It is a structural schematic diagram of the clamping mechanism of the utility model;

[0025] Figure 4 For this utility model Figure 3 The structural diagram at A in the middle;

[0026] Figure 5 It is a structural schematic diagram of the worm wheel and worm of the utility model; DETAILED DESCRIPTION

[0027] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The utility model provides a technical solution: a construction template for bridge joint construction, including a lower template 11, a clamping mechanism for clamping a beam body, the clamping mechanism is arranged on the lower template 11, and the clamping mechanism has two groups and is symmetrically arranged at both ends of the lower template 11. The clamping mechanism includes a pressure cover frame 2 for pressing the beam body on the lower template 11, a linkage rod 4 arranged on the pressure cover frame 2, a pressure rod 3 hinged to the linkage rod 4 at the upper end, and a clamping template 13 hinged to the middle part of the pressure rod 3. The clamping template 13 is slidably connected to the lower template 11, and a lifting device for lifting the lower end of the pressure rod 3 is arranged on the lower template 11.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The gland frame 2 includes a bearing plate 21 fixedly connected to the linkage rod 4, a support rod 22 fixedly connected to the bearing plate 21, and a side plate 23 sleeved on the support rod 22. There are three support rods 22 fixedly connected to the bearing plate 21 at equal intervals, and there are two side plates 23 symmetrically arranged. The side plates 23 are fixedly connected to the supports 24, and each side plate 23 is fixedly connected to two supports 24. The staff slides the side plates 23 according to the width of the gap between the beams. When the gland frame 2 covers the gap, the supports 24 can be supported on the beam.

[0029] See also Figure 4 A clamping bolt 25 is passed through the side plate 23, and the end of the clamping bolt 25 abuts against the support rod 22; when the side plate 23 is moved to a suitable position, the staff rotates the clamping bolt 25 to make it abut against the support rod 22 to prevent the side plate 23 from sliding at will.

[0030] See also Figure 1 , Figure 3 The clamping template 13 is fixedly connected to a fixing plate 7, a fixing screw 71 is threaded through the fixing plate 7, a fixing hole matching the fixing screw 71 is provided on the lower template 11, and the end of the fixing screw 71 is fixedly connected to a rotating disk 72.

[0031] See also Figure 1 , Figure 2 , Figure 3 The lifting device includes a support 8 fixedly connected to the lower template 11, a rotating shaft 81 rotatably connected to the upper end of the support 8, and a rope 82 for connecting the rotating shaft 81 and the lower end of the pressure rod 3. A hand wheel 83 is provided on the rotating shaft 81 for driving the rotating shaft 81 to rotate.

[0032] See also Figure 5A receiving groove for accommodating a turbine 84 and a worm 85 is provided at the upper end of the pillar 8, the turbine 84 is fastened and sleeved on the rotating shaft 81, the turbine 84 is constantly meshing with a worm 85, the worm 85 is rotatably connected to the inside of the pillar 8, the worm 85 is rotatably connected to the groove wall of the receiving groove, the upper end of the worm 85 penetrates the pillar 8, the upper end of the worm 85 penetrates the groove wall of the receiving groove, the worm is fixedly connected to the handwheel 83, and a blocking plate 86 is fixedly connected to the notch of the receiving groove by a hexagonal bolt.

[0033] See also Figure 1 , Figure 2 , Figure 3 A symmetrically arranged lower slider 14 is fixedly connected to the lower surface of the clamping template 13 , and lower sliding grooves 15 matching the lower slider 14 are provided on both ends of the lower template 11 .

[0034] When the device is in use, the staff first welds the annular reinforcement on the lap joint of the embedded steel bar between the gaps of two adjacent beam bodies, and then the staff applies the release agent on the lower template 11, the clamping template 13, and the support 24; then the staff operates the lifting device to lift the device to the bottom of the gaps of the two adjacent beam bodies, so that the lower template 11 is located below the gaps of the two adjacent beam bodies, and the upper surface of the lower template 11 is close to the lower surface of the beam body, and the clamping template 13 is located on both sides of the gaps of the two adjacent beam bodies; then the staff slides the clamping template 13 to make them close to each other and clamp the beam body, and then the staff rotates the rotating disk 72 to make the fixing screw 71 pass through the fixing plate 7 and be installed on the fixing hole of the lower template 11; then the staff moves the side plate 23 according to the width of the gaps of the two adjacent beam bodies, so that the two sides The relative distance between the plates 23 is greater than the width of the gap between the two adjacent beams, and then the staff turns the tightening bolts 25 to fix the side plates 23; then the staff turns the hand wheel 83 to rotate the worm 85, which in turn drives the turbine 84 to rotate, thereby driving the rotating shaft 81 to rotate, and finally realizing the winding of the rope 82. The winding of the rope 82 lifts the lower end of the pressure rod 3. Based on the lever principle, the pressure cover frame located at the upper end of the pressure rod 3 will move downward until the support 24 is supported on the beam; finally, the staff removes the lifting device, which is firmly fixed on the beam, and then the staff pours concrete into the gaps between the two adjacent beams. After the pouring is completed, the staff smoothes the concrete. After the concrete solidifies, the device can be removed to carry out the wet joint of the next section of the bridge.

[0035] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0036] The present invention is described above with reference to the preferred embodiments, but the protection scope of the present invention is not limited thereto, and all technical solutions falling within the scope of the claims are within the protection scope of the present invention. Various improvements may be made to the present invention and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A construction template for bridge joint construction, comprising a lower template (11) and a clamping mechanism for clamping a beam body, wherein the clamping mechanism is arranged on the lower template (11), and is characterized in that: The clamping mechanism comprises a cover frame (2) for clamping the beam body onto the lower template (11), a linkage rod (4) arranged on the cover frame (2), a pressure rod (3) whose upper end is hinged to the linkage rod (4), and a clamping template (13) hinged to the middle part of the pressure rod (3); the clamping template (13) is slidably connected to the lower template (11); and a lifting device for lifting the lower end of the pressure rod (3) is arranged on the lower template (11).

2. A construction template for bridge joint construction according to claim 1, characterized in that: The gland frame (2) comprises a bearing plate (21) fixedly connected to the linkage rod (4), a support rod (22) fixedly connected to the bearing plate (21), and a side plate (23) sleeved on the support rod (22); a support (24) is fixedly connected to the side plate (23).

3. A construction template for bridge joint construction according to claim 2, characterized in that: A clamping bolt (25) is passed through the side plate (23), and an end of the clamping bolt (25) contacts the support rod (22).

4. A construction template for bridge joint construction according to claim 1, characterized in that: The clamping template (13) is fixedly connected to a fixing plate (7), a fixing screw (71) is threadedly provided on the fixing plate (7), a fixing hole matching the fixing screw (71) is provided on the lower template (11), and an end of the fixing screw (71) is fixedly connected to a rotating disc (72).

5. A construction template for bridge joint construction according to claim 4, characterized in that: The lifting device comprises a support (8) fixedly connected to the lower template (11), a rotating shaft (81) rotatably connected to the upper end of the support (8), and a rope (82) for connecting the rotating shaft (81) and the lower end of the pressure rod (3); and a hand wheel (83) for driving the rotating shaft (81) to rotate is provided on the rotating shaft (81).

6. A construction template for bridge joint construction according to claim 5, characterized in that: A turbine (84) is fixedly mounted on the rotating shaft (81), a worm (85) is constantly meshed with the turbine (84), the worm (85) is rotatably connected to the inside of the support (8), the upper end of the worm (85) passes through the support (8), and the worm is fixedly connected to the hand wheel (83).

Images