An adjustable diaphragm wet joint mold
The design of the adjustable diaphragm wet joint mold solves the problem of fixing the diaphragms during connection, achieves tight contact, avoids concrete leakage, and improves construction safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU NO 1 CONSTR ENG
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-02
Smart Images

Figure CN224310868U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of precast beam diaphragms, specifically relating to an adjustable diaphragm wet joint mold. Background Technology
[0002] Precast beam diaphragms are transverse connecting members installed in precast concrete beams (such as bridge T-beams and box girders), primarily functioning to enhance the overall structural integrity. They connect adjacent main beams laterally, distributing loads, increasing torsional stiffness, and reducing deformation of individual beams. They are typically precast simultaneously with the main beams, using reinforced concrete or prestressed processes, and require precise alignment during construction to ensure joint strength. Diaphragms are often placed at critical locations such as beam ends and spans, playing a vital role in ensuring the safety and durability of large-span structures.
[0003] A known authorized patent with application number 202121660816.9 discloses a formwork device for casting precast beam diaphragms: it consists of two sets of formwork systems, each including vertical or L-shaped side plates, a top plate, lateral struts, and vertical struts forming an adjustable mechanism; the vertical or L-shaped side plates are connected to the top plate via inter-plate hinges; the lateral struts are connected to the vertical struts via strut bearings; the lower end of the vertical strut is fixed to the top plate or strut bearing by fixing bolts, and the upper end is fixed to the support beam by locking bolts, thus fixing the formwork device. The formwork installation and disassembly operations of this utility model are all completed above the bridge deck, avoiding manual high-altitude work below the bridge deck, resulting in low construction safety risks; the process is simple, construction efficiency is high; and the adjustable structure provides strong installation adaptability.
[0004] However, during the implementation of the relevant technology, the following problems were found with the above technical solution: when in use, too many fixing devices are required for fixation, and when connecting two crossbeams, it is difficult to fit them properly, which can easily cause concrete leakage.
[0005] Therefore, an adjustable wet joint mold for diaphragms is proposed to solve the above problems. Utility Model Content
[0006] This utility model proposes an adjustable wet joint mold for transverse diaphragms, which solves the problems in related technologies that require too many fixing devices for fixation during use, and that it is difficult to fit the two transverse diaphragms properly when connecting them, which can easily cause concrete leakage.
[0007] The technical solution of this utility model is as follows: An adjustable diaphragm wet joint mold, comprising: a precast beam, a diaphragm, a bottom plate, two side support plates, a lifting mechanism and a fixing mechanism, wherein the diaphragm is arranged on both sides of the precast beam;
[0008] The base plate has a movable hole inside, and the side support plate is fixed to the upper surface of the base plate through the movable hole. The base plate is in close contact with the lower surface of the transverse partition, and the side support plate is in close contact with both sides of the transverse partition.
[0009] The lifting mechanism is rotatably connected to the upper wall of the base plate, and the lifting mechanism passes through the fixing mechanism.
[0010] Preferably, the side support plate includes a fixed plate, a vertical plate, and a fixing bolt. The fixing bolt passes through the fixed plate and the movable hole. The fixed plate is fixed to the upper wall of the base plate by the fixing bolt, and the vertical plate is fixedly connected to one side of the fixed plate.
[0011] Preferably, a tie bolt is inserted inside the vertical plate, and the tie bolt passes through both vertical plates.
[0012] Preferably, the lifting mechanism includes a connecting seat, a screw, and a threaded sleeve. The connecting seat is rotatably connected to the upper surface of the base plate, the connecting seat is rotatably connected to the screw, the threaded sleeve is threaded to the outer wall of the screw, the screw passes through the fixing mechanism, and the threaded sleeve is disposed above the fixing mechanism.
[0013] Preferably, the fixing mechanism includes two fixing rods and two limiting rods. The fixing rods are snapped onto the upper wall of the precast beam, the screw passes through the fixing rods, and the limiting rods are inserted between the two fixing rods.
[0014] Preferably, the base plate, side support plate, and lifting mechanism are all made of steel, and the upper wall of the base plate and the inner wall of the side support plate are uniformly coated with a release agent.
[0015] The working principle and beneficial effects of this utility model are as follows:
[0016] The base plate and side support plates are fixed by bolts, preventing deformation during pouring. The spacing between the two side support plates can be effectively adjusted by the moving holes and tie bolts, ensuring tight contact with the transverse diaphragm and preventing concrete leakage. The fixing and lifting mechanisms allow the base plate to be lifted during device fixing, ensuring a tight fit between the base plate and the bottom of the transverse diaphragm. Attached Figure Description
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;
[0020] Figure 3 This is a three-dimensional structural diagram of the side support plate of this utility model;
[0021] Figure 4 This is a front view structural diagram of the present invention.
[0022] In the diagram: 1. Precast beam; 2. Horizontal diaphragm; 3. Base plate; 4. Side support plate; 41. Fixing plate; 42. Vertical plate; 43. Fixing bolt; 5. Tie bolt; 6. Lifting mechanism; 61. Connecting seat; 62. Screw; 63. Threaded sleeve; 7. Fixing mechanism; 71. Fixing rod; 72. Limiting rod; 8. Moving hole. Detailed Implementation
[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0024] Implementation
[0025] Please see Figure 1 -4, an adjustable diaphragm wet joint mold, comprising: a precast beam 1, a diaphragm 2, a bottom plate 3, two side support plates 4, a lifting mechanism 6 and a fixing mechanism 7, wherein the diaphragm 2 is disposed on both sides of the precast beam 1.
[0026] The base plate 3 has a movable hole 8 inside, and the side support plate 4 is fixed to the upper surface of the base plate 3 through the movable hole 8. The base plate 3 is in close contact with the lower surface of the transverse partition 2, and the side support plate 4 is in close contact with both sides of the transverse partition 2.
[0027] The lifting mechanism 6 is rotatably connected to the upper wall of the base plate 3, and the lifting mechanism 6 passes through the fixing mechanism 7.
[0028] The technical solution provided in this embodiment is as follows: In use, firstly, place two fixing rods 71 above the precast beam 1, then install two limiting rods 72 inside the fixing rods 71 to prevent the fixing rods 71 from shifting. Then, rotate the threaded sleeve 63. The rotation of the threaded sleeve 63 causes the screw 62 to be pulled upward. The screw 62 drives the base plate 3 to move upward. Through the rotational connection, the base plate 3 can be tightly attached to the bottom of the transverse partition 2. After the base plate 3 reaches the predetermined position, place the vertical plates 42 of the two side support plates 4 tightly against the two sides of the transverse partition 2. Then, install the fixing bolts 43. During installation, the fixing bolts 43 pass through the fixing plate 41 and the moving hole 8. Only the nuts and bolts need to be installed; no tightening is required. Then, insert two tie bolts 5 through the vertical plates 42 to move the two vertical plates 42 towards the middle, making their fit with the transverse partition 2 tighter. Finally, tighten the fixing bolts 43 to proceed with the pouring.
[0029] Furthermore, the side support plate 4 includes a fixed plate 41, a vertical plate 42, and a fixing bolt 43. The fixing bolt 43 passes through the fixed plate 41 and the moving hole 8. The fixed plate 41 is fixed to the upper wall of the base plate 3 by the fixing bolt 43, and the vertical plate 42 is fixedly connected to one side of the fixed plate 41.
[0030] Specifically, the fixing plate 41 can effectively fix the vertical plate 42 by fixing bolts 43, and the fixing is faster and more reliable.
[0031] Furthermore, tie bolts 5 are inserted inside the vertical plate 42, and the tie bolts 5 pass through the two vertical plates 42.
[0032] Specifically, by setting the tie bolts 5, the two vertical plates 42 can be moved toward the horizontal partition 2 so that they are close to the horizontal partition 2, and cooperate with the moving holes 8 so that the distance between the two side support plates 4 can also be adjusted to accommodate horizontal partitions 2 of greater thickness.
[0033] Furthermore, the lifting mechanism 6 includes a connecting seat 61, a screw 62, and a threaded sleeve 63. The connecting seat 61 is rotatably connected to the upper surface of the base plate 3. The connecting seat 61 is rotatably connected to the screw 62. The threaded sleeve 63 is threadedly connected to the outer wall of the screw 62. The screw 62 passes through the fixing mechanism 7, and the threaded sleeve 63 is positioned above the fixing mechanism 7.
[0034] Specifically, by setting up the lifting mechanism 6, when the screw 62 is pulled upward, the bottom plate 3 can be lifted upward and rotated to connect with the bottom plate 3, so that the bottom plate 3 can be tightly attached to the bottom of the transverse partition 2 to avoid leakage during pouring.
[0035] Furthermore, the fixing mechanism 7 includes two fixing rods 71 and two limiting rods 72. The fixing rods 71 are snapped onto the upper wall of the precast beam 1, the screw 62 passes through the fixing rods 71, and the limiting rods 72 are inserted between the two fixing rods 71.
[0036] Specifically, by setting up the fixing mechanism 7, which works in conjunction with the screw 62, the bottom plate 3 can be lifted by rotating the threaded sleeve 63, and the device can be prevented from falling off during the pouring of concrete due to its heavy weight.
[0037] Furthermore, the base plate 3, the side support plate 4, and the lifting mechanism 6 are all made of steel, and the upper wall of the base plate 3 and the inner wall of the side support plate 4 are uniformly coated with a release agent.
[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An adjustable diaphragm wet joint mold, comprising: The precast beam (1), diaphragm (2), bottom plate (3), two side support plates (4), lifting mechanism (6) and fixing mechanism (7) are characterized in that the diaphragm (2) is arranged on both sides of the precast beam (1); The bottom plate (3) has a movable hole (8) inside. The side support plate (4) is fixed to the upper surface of the bottom plate (3) through the movable hole (8). The bottom plate (3) is in close contact with the lower surface of the transverse partition (2). The side support plate (4) is in close contact with both sides of the transverse partition (2). The lifting mechanism (6) is rotatably connected to the upper wall of the base plate (3), and the lifting mechanism (6) passes through the fixing mechanism (7).
2. The adjustable diaphragm wet joint mold according to claim 1, characterized in that: The side support plate (4) includes a fixed plate (41), a vertical plate (42), and a fixing bolt (43). The fixing bolt (43) passes through the fixed plate (41) and the moving hole (8). The fixed plate (41) is fixed to the upper wall of the base plate (3) by the fixing bolt (43). The vertical plate (42) is fixedly connected to one side of the fixed plate (41).
3. The adjustable diaphragm wet joint mold according to claim 2, characterized in that: A tie bolt (5) is inserted inside the vertical plate (42), and the tie bolt (5) passes through the two vertical plates (42).
4. The adjustable diaphragm wet joint mold according to claim 1, characterized in that: The lifting mechanism (6) includes a connecting seat (61), a screw (62) and a threaded sleeve (63). The connecting seat (61) is rotatably connected to the upper surface of the base plate (3). The connecting seat (61) is rotatably connected to the screw (62). The threaded sleeve (63) is threadedly connected to the outer wall of the screw (62). The screw (62) passes through the fixing mechanism (7). The threaded sleeve (63) is located above the fixing mechanism (7).
5. An adjustable diaphragm wet joint mold according to claim 4, characterized in that: The fixing mechanism (7) includes two fixing rods (71) and two limiting rods (72). The fixing rods (71) are engaged with the upper wall of the precast beam (1). The screw (62) passes through the fixing rods (71). The limiting rods (72) are inserted between the two fixing rods (71).
6. The adjustable diaphragm wet joint mold according to claim 1, characterized in that: The base plate (3), the side support plate (4), and the lifting mechanism (6) are all made of steel. The upper wall of the base plate (3) and the inner wall of the side support plate (4) are uniformly coated with a release agent.