Stair formwork device for building construction

Abstract

The application relates to the technical field of building construction templates, in particular to a stair template device for house building construction. The device comprises a support frame, a template frame, a slope adjusting mechanism and a width adjusting mechanism, the template frame is rotationally connected with the support frame, the template frame comprises a base template and two support templates, the two support templates are fixed on the two sides of the base template respectively; the slope adjusting mechanism comprises a lifting rod, the two ends of the lifting rod are connected with the base template and the ground respectively; the width adjusting mechanism comprises two sliding templates, an adjusting rod and a locking piece, the sliding template is slidingly connected with the base template; the locking piece comprises a limiting ring, an elastic assembly, a locking plate and multiple locking pins, the locking plate is installed in the mounting groove of the adjusting rod, and the locking plate is connected with the groove wall of the mounting groove through the elastic assembly; the support template is provided with an assembly through hole, the adjusting rod is slidingly arranged in the assembly through hole and the limiting ring, the first end of the adjusting rod is connected with the sliding template, and one of the multiple locking pins is arranged in the clamping groove of the limiting ring.

Description

Technical Field

[0001] This application relates to the field of formwork technology in building construction, and more specifically, to a staircase formwork device for building construction. Background Technology

[0002] As a key component of vertical transportation in building construction, the structural dimensional accuracy, surface flatness, and slope rationality of stairs directly determine the safety and functionality of a building. In building construction, stairs are usually cast in place with concrete, and stair formwork is a temporary support structure for the concrete stair pouring process; its performance has a decisive impact on the quality of stair construction.

[0003] Traditional stair formwork mainly consists of panels, a support system, and connectors. The support system includes components such as uprights, horizontal bars, and diagonal braces. The panels are fabricated according to the dimensional parameters (such as tread height, tread width, and stair slope) of the stair design drawings to form the space required for concrete pouring. The construction process for this type of stair formwork is roughly as follows: First, the construction site is cleaned and lines are laid out according to the design requirements, while preparing the support accessories. Next, the bottom support frame is erected, and the bottom formwork is laid and fixed on the support frame. Then, the side panels and tread uprights are installed and initially reinforced. Afterward, the flatness and verticality of the formwork are calibrated, secondary ribs and diagonal braces are added to improve the stability of the support, and the joints of the formwork are sealed. After the formwork passes inspection, concrete is poured in layers. Once the concrete strength reaches the design strength, the formwork is removed according to the principle of "support first, then dismantle."

[0004] However, existing staircase formwork devices for building construction still have many significant shortcomings in practical use, mainly in terms of adjustment flexibility and versatility. Firstly, regarding slope and height adjustments, when the slope of the stair section or the height of the bottom formwork needs to be adjusted according to construction requirements, operators must first loosen all the supporting components (such as horizontal bar connectors and diagonal brace fasteners). After adjusting the height / slope by increasing or decreasing the length of the support uprights or adjusting the angle of the diagonal braces, all the supporting components must be tightened again one by one. This adjustment method not only generates a large amount of repetitive work, significantly increasing time and labor costs and reducing construction efficiency, but more importantly, the formwork is prone to shaking and shifting due to the loss of reinforcement during the adjustment process. Multiple stops are required to correct the position to ensure installation accuracy, further affecting construction progress and quality. On the other hand, in terms of width adaptability, the side panel spacing (i.e. stair width) of traditional templates is fixed by the customized panel size. If there are stair sections of different widths in the same building project, or if the width changes due to subsequent construction needs, it is necessary to re-process and manufacture panels and support components of the corresponding size. This makes it impossible to adapt a set of templates to multiple scenarios, which not only increases the cost of construction materials, but also causes delays in the construction period due to template replacement.

[0005] Therefore, in view of the technical problems of low efficiency, difficulty in ensuring accuracy, poor width adaptability and insufficient versatility of existing stair formwork devices in slope / height adjustment, there is an urgent need to propose a new type of stair formwork device for building construction with functions of rapid adjustment, stable locking and multi-level adaptation, so as to solve the above-mentioned technical defects and improve the overall construction efficiency. Summary of the Invention

[0006] In view of this, this application provides a staircase formwork device for building construction, which aims to improve the problems of low operation efficiency, difficulty in ensuring positional accuracy, poor width adaptability and insufficient versatility of existing staircase formwork devices when adjusting slope / height, thereby improving the construction progress and construction quality of staircases.

[0007] This application provides a staircase formwork device for building construction, comprising:

[0008] The support frame is fixedly connected to the ground.

[0009] The template frame is rotatably connected to the support frame on one side along its length. The template frame includes a base template and two support templates, with the two support templates respectively fixedly connected to both sides of the base template along its width.

[0010] An inclination adjustment mechanism includes a lifting rod, one end of which is hinged to the bottom side of the base template, and the other end of which is fixedly connected to the ground; and

[0011] The width adjustment mechanism includes two sliding templates, an adjusting rod, and a locking element. Each sliding template is parallel to a corresponding support template and is located inside the corresponding support template. The sliding template is slidably connected to the base template. The base template and the two sliding templates form a cavity for accommodating concrete. The outer peripheral wall of the adjusting rod has an axially extending mounting groove.

[0012] The locking component includes a limiting ring, an elastic component, a locking plate, and multiple locking pins. The locking plate is installed in the mounting groove and extends axially along the adjusting rod. One side of the locking plate is connected to the groove wall of the mounting groove via the elastic component. The multiple locking pins are arranged and fixed on the other side of the locking plate along its extension direction. The limiting ring is installed on the outside of the support template. The support template has an assembly through hole, which is coaxial with the limiting ring. The adjusting rod slides through the assembly through hole and the limiting ring. The first end of the adjusting rod is fixedly connected to the sliding template, and the second end of the adjusting rod is used to receive force to drive the sliding template to move. The limiting ring has a snap-fit ​​groove extending radially from the inner ring, and one of the multiple locking pins passes through the snap-fit ​​groove.

[0013] Preferably, the width adjustment mechanism further includes a pressing block, which is fixedly connected to the locking plate and located on one side near the second end of the adjustment rod.

[0014] Preferably, the staircase formwork device for building construction further includes a striking mechanism, which includes a sliding shaft that is movably connected to the bottom side of the base formwork; the sliding shaft is configured to move along a preset direction under force and strike the base formwork to compact the concrete in the receiving cavity through vibration.

[0015] Preferably, the sliding shaft is slidably connected to the bottom side of the base template in the axial direction of the sliding shaft;

[0016] The outer peripheral wall of the sliding shaft is provided with a plurality of striking pins protruding radially, and the plurality of striking pins are arranged at intervals along the axial direction of the sliding shaft; the bottom side of the base template is provided with a plurality of blocking blocks corresponding to the positions of the striking pins, and the plurality of blocking blocks are evenly arranged parallel to the axial direction of the sliding shaft, and when the sliding shaft slides along the axial direction on the bottom side of the base template, the blocking blocks are located on the movement trajectory of the striking pins, and the striking pins can collide with the blocking blocks to generate striking vibrations on the base template.

[0017] Preferably, the bottom side of the template frame is provided with a mounting base, the mounting base has a mounting hole, the sliding shaft slides through the mounting hole, the end of the sliding shaft is provided with a limiting part, in the radial direction of the mounting hole, the size of the limiting part is larger than the diameter of the mounting hole, and the limiting part abuts against the mounting base.

[0018] Preferably, the sliding shaft is provided with a handle.

[0019] Preferably, the width adjustment mechanism further includes a connecting rod;

[0020] One of the sliding templates is fixedly connected to the first end of at least two of the adjusting rods, and the second ends of all the adjusting rods corresponding to one of the sliding modules are connected by connecting rods.

[0021] Preferably, the lifting rod includes a sleeve rod, a movable rod, and a limiting pin. The movable rod is sleeved inside the sleeve rod. The sleeve rod has multiple locking holes along its axis. The movable rod has a connecting hole. The limiting pin passes through the connecting hole and one of the locking holes.

[0022] Preferably, the lifting rod further includes a support rod, one end of which is hinged to the ground and the other end of which is hinged to the sleeve rod.

[0023] Compared with the prior art, the staircase formwork device for building construction provided in this application achieves at least the following beneficial effects:

[0024] In the staircase formwork device for building construction provided in this application, the support height of the base formwork can be changed by extending and retracting the lifting rod of the inclination adjustment mechanism. Since one side of the formwork frame is rotatably connected to the support frame along its length, the extension and retraction of the lifting rod, utilizing the rotational characteristics of this hinge point, drives the entire formwork frame to rotate around the support frame, thereby precisely adjusting the inclination angle of the receiving cavity (i.e., the staircase slope). This adjustment process does not require loosening the connection between the formwork frame and the support frame, achieving rapid and stable adjustment of the inclination and avoiding the cumbersome operation of traditional formwork disassembly and reassembly.

[0025] Regarding width adjustment, the sliding template maintains a sliding fit with the base template, and each sliding template is arranged parallel to the corresponding support template on its inner side. The adjusting rod slides through the mounting through hole of the support template and the outer limiting ring. Its first end is fixedly connected to the sliding template, and by applying force to the second end, the sliding template can be directly driven to move along the width direction of the base template. At the same time, the locking component provides continuous radial elastic force through the elastic component, which always pushes the locking plate towards the limiting ring, so that one of the multiple locking pins on the locking plate engages in the locking groove of the limiting ring, thereby achieving axial positioning of the adjusting rod and thus firmly fixing the position of the sliding template.

[0026] During unlocking and adjustment, only external force is needed to press the locking plate, causing the elastic component to compress and deform, thus disengaging the locking pin from the locking groove of the limiting ring and releasing the axial constraint on the adjusting rod. At this point, the adjusting rod can slide freely. By pushing or pulling the second end of the adjusting rod, the sliding template can be moved to the desired width position. After the width adjustment is complete, the external force pressing the locking plate is removed. The elastic component resets under its own elastic force, pushing the locking plate back towards the limiting ring, causing the locking pin at the corresponding position to re-embed into the locking groove. Utilizing the radial engagement between the locking pin and the locking groove, the axial movement of the adjusting rod is restricted, thereby locking the position of the sliding template again and ensuring the stability of the template width during concrete pouring.

[0027] In summary, the embodiments of this application utilize the lifting rod of the inclination adjustment mechanism to drive the template frame to rotate around the support frame, enabling precise and rapid adjustment of the inclination according to the design slope requirements of the staircase. Furthermore, the cooperation between the sliding template and the adjusting rod of the width adjustment mechanism, combined with the multi-position locking function of the locking components (multiple locking pins and corresponding locking slots), allows for rapid adjustment and secure locking according to different staircase width requirements, adapting to various construction scenarios and effectively improving the applicability and construction efficiency of the device.

[0028] Of course, any product implementing this application need not specifically need to achieve all of the technical effects described above at the same time.

[0029] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0031] Figure 1 The figure shown is a three-dimensional structural schematic diagram (I) of the staircase formwork device for building construction provided in the embodiment of this application;

[0032] Figure 2 The figure shown is a three-dimensional structural schematic diagram (II) of the staircase formwork device for building construction provided in the embodiment of this application;

[0033] Figure 3 The diagram shown is a schematic diagram of the assembly structure of the template frame and the width adjustment mechanism in an embodiment of this application;

[0034] Figure 4 The diagram shown is a schematic representation of the assembly structure of the locking element and the adjusting rod in an embodiment of this application.

[0035] Figure 5 The diagram shown is a cross-sectional view of the assembly structure of the locking member and the adjusting rod in an embodiment of this application.

[0036] Figure 6 The diagram shown is a structural schematic of the lifting rod in an embodiment of this application;

[0037] Figure 7 The diagram shown is a structural schematic of the sliding shaft in an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100-Support frame, 200-Template frame, 201-Receiving cavity, 210-Base template, 211-Blocking block, 212-Mounting seat, 220-Support template, 300-Inclination adjustment mechanism, 310-Lifting rod, 311-Sleeve rod, 312-Moving rod, 313-Limiting pin, 320-Support rod, 400-Width adjustment mechanism, 410-Sliding template, 420-Adjusting rod, 421-Mounting groove, 430-Locking component, 431-Limiting ring, 4311-Snap-fit ​​groove, 432-Elastic component, 433-Locking plate, 434-Locking pin, 435-Pressing block, 440-Connecting rod, 510-Sliding shaft, 511-Handle, 512-Knocking pin, 513-Limiting part. Detailed Implementation

[0040] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0041] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0042] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0043] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0044] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0046] Figure 1 The image shown is a three-dimensional structural schematic diagram (I) of the staircase formwork device for building construction provided in an embodiment of this application. Figure 2 The image shown is a three-dimensional structural schematic diagram (II) of the staircase formwork device for building construction provided in this application embodiment. Figure 3 The diagram shown is a schematic representation of the assembly structure of the template frame and the width adjustment mechanism in an embodiment of this application. Figure 4 The diagram shown is a schematic representation of the assembly structure of the locking element and the adjusting rod in an embodiment of this application. Figure 5 The diagram shown is a cross-sectional view of the assembly structure of the locking member and the adjusting rod in an embodiment of this application.

[0047] Please refer to Figures 1 to 5 This application provides a staircase formwork device for building construction, including a support frame 100, a formwork frame 200, an inclination adjustment mechanism 300, and a width adjustment mechanism 400.

[0048] The support frame 100 is fixedly connected to the ground;

[0049] The template frame 200 is rotatably connected to the support frame 100 on one side along its length. The template frame 200 includes a base template 210 and two support templates 220, which are respectively fixedly connected to both sides of the base template 210 in the width direction.

[0050] The tilt adjustment mechanism 300 includes a lifting rod 310, one end of which is hinged to the bottom side of the base template 210, and the other end of which is fixedly connected to the ground.

[0051] The width adjustment mechanism 400 includes two sliding templates 410, an adjusting rod 420, and a locking element 430. Each sliding template 410 is parallel to a corresponding support template 220. The sliding template 410 is disposed inside the corresponding support template 220. The sliding template 410 is slidably connected to the base template 210. The base template 210 and the two sliding templates 410 form a concrete receiving cavity 201. The outer peripheral wall of the adjusting rod 420 is provided with an axially extending mounting groove 421.

[0052] The locking component 430 includes a limiting ring 431, an elastic component 432, a locking plate 433, and multiple locking pins 434. The locking plate 433 is installed in the mounting groove 421 and extends axially along the adjusting rod 420. One side of the locking plate 433 is connected to the groove wall of the mounting groove 421 via the elastic component 432. The multiple locking pins 434 are arranged and fixed on the other side of the locking plate 433 along its extending direction. The limiting ring 431 is installed on the support template. On the outer side of 220, the support template 220 has an assembly through hole, which is coaxial with the limiting ring 431. The adjusting rod 420 slides through the assembly through hole and the limiting ring 431. The first end of the adjusting rod 420 is fixedly connected to the sliding template 410, and the second end of the adjusting rod 420 is used to receive force to drive the sliding template 410 to move. The limiting ring 431 has a locking groove 4311 that is radially opened from the inner ring, and one of the multiple locking pins 434 passes through the locking groove 4311.

[0053] The working process of the staircase formwork device for building construction provided in this embodiment is as follows:

[0054] Incline adjustment: Based on the designed slope of the staircase, by adjusting the telescopic length of the lifting rod 310, the base template 210 is driven to rotate up and down around the rotating connection between the support frame 100 and the ground until the template frame 200 reaches the preset inclination. The inclination calibration is completed directly without loosening the fixing structure of the support frame 100 or the template frame 200.

[0055] Width Adjustment: Based on the stair width, first operate the locking component 430 to release the position lock of the adjusting rod 420, and then move the adjusting rod 420 to adjust the width of the receiving cavity 201. Specifically, press the locking plate 433 to compress the elastic component 432, causing the locking pin 434 to disengage from the locking groove 4311 of the limiting ring 431, pushing the adjusting rod 420 to drive the sliding template 410 to slide along the width direction of the base template 210, adjusting the distance between the two sliding templates 410 to match the stair width requirement; after adjustment, release the locking plate 433, the elastic component 432 resets and pushes the locking plate 433, causing the locking pin 434 at the corresponding position to engage with the locking groove 4311, thereby locking the adjusting rod 420 and completing the width fixation.

[0056] Concrete pouring and formwork removal: After the slope and width are adjusted, pour concrete into the cavity 201 formed by the base formwork 210 and the two sliding formworks 410; after the concrete strength reaches the standard, first operate the locking device 430 to release the position lock of the adjusting rod 420, move the adjusting rod 420 outward, retract the sliding formwork 410, then adjust the lifting rod 310 to shorten, so that the formwork frame 200 rotates around the support frame 100 and detaches from the concrete component, and finally remove the support frame 100 and other components according to the specifications.

[0057] In this embodiment, the support height of the base template 210 can be changed by extending and retracting the lifting rod 310 of the inclination adjustment mechanism 300. Since one side of the template frame 200 is rotatably connected to the support frame 100 along its length, the extension and retraction of the lifting rod 310 will drive the template frame 200 to rotate around the support frame 100 by utilizing the rotational characteristics of this hinge point, thereby precisely adjusting the inclination angle (i.e., the stair slope) of the receiving cavity 201. This adjustment process does not require loosening the connection between the template frame 200 and the support frame 100, achieving rapid and stable adjustment of the inclination and avoiding the cumbersome operation of traditional template disassembly and reassembly.

[0058] Regarding width adjustment, the sliding template 410 maintains a sliding fit with the base template 210, and each sliding template 410 is arranged parallel to the corresponding support template 220 on its inner side. The adjusting rod 420 slides through the mounting through hole of the support template 220 and the outer limiting ring 431. Its first end is fixedly connected to the sliding template 410, and by applying force to the second end, the sliding template 410 can be directly driven to move along the width direction of the base template 210. At the same time, the locking member 430 provides continuous radial elastic force through the elastic component 432, which always pushes the locking plate 433 to move towards the limiting ring 431, so that one of the multiple locking pins 434 on the locking plate 433 is engaged in the locking groove 4311 of the limiting ring 431, thereby achieving axial positioning of the adjusting rod 420 and thus firmly fixing the position of the sliding template 410.

[0059] During unlocking and adjustment, only external force is needed to press the locking plate 433, causing the elastic component 432 to compress and deform, driving the locking pin 434 to disengage from the locking groove 4311 of the limiting ring 431, thus releasing the axial constraint on the adjusting rod 420. At this time, the adjusting rod 420 can slide freely. By pushing or pulling the second end of the adjusting rod 420, the sliding template 410 is driven to move to the required width position. After the width adjustment is completed, the external force pressing the locking plate 433 is removed, and the elastic component 432 resets under its own elastic force, pushing the locking plate 433 towards the limiting ring 431 again, so that the locking pin 434 at the corresponding position re-embeds into the locking groove 4311. Utilizing the radial engagement relationship between the locking pin 434 and the locking groove 4311, the axial movement of the adjusting rod 420 is restricted, thereby locking the position of the sliding template 410 again and ensuring the stability of the template width during concrete pouring.

[0060] In summary, according to the embodiments of this application, the template frame 200 can be rotated around the support frame 100 by the telescopic drive of the lifting rod 310 of the slope adjustment mechanism 300, so that the slope can be accurately and quickly adjusted according to the slope requirements of the staircase design. Through the cooperation of the sliding template 410 and the adjustment rod 420 of the width adjustment mechanism 400, combined with the multi-position locking function of the locking component 430 (the corresponding cooperation of multiple locking pins 434 and the snap-fit ​​groove 4311), it can be quickly adjusted and securely locked according to different staircase width requirements, adapting to various construction scenarios and effectively improving the applicability and construction efficiency of the device.

[0061] See Figure 4 and Figure 5 In some embodiments, the width adjustment mechanism 400 further includes a pressing block 435, which is fixedly connected to the locking plate 433 and located on one side near the second end of the adjusting rod 420. Thus, when the operator drives the adjusting rod 420 (pushing and pulling to adjust the width), they can directly apply force through the pressing block 435 to compress the elastic component 432 without needing to locate the locking plate 433 or use tools to pry it open. This achieves a seamless operation of adjusting the width and unlocking / locking, reducing operational steps and the difficulty of applying force manually, thus lowering labor intensity. Furthermore, the pressing block 435 provides a clear point of force application, avoiding slippage or uneven force application when directly pressing the locking plate 433, which could cause the locking pin 434 to fail to disengage smoothly or become stuck in the locking groove. This ensures precise movement of the locking component 430, further guaranteeing the reliability of locking after width adjustment and indirectly improving the accuracy of the template width dimensions.

[0062] Figure 6 The diagram shown is a structural schematic of the sliding shaft in an embodiment of this application.

[0063] See Figure 2 and Figure 6In some embodiments, the staircase formwork device for building construction also includes a striking mechanism, which includes a sliding shaft 510 that is movably connected to the bottom side of the base formwork 210. The sliding shaft 510 is configured to move along a preset direction under the action of force and strike the base formwork 210 to compact the concrete in the receiving cavity 201 through vibration.

[0064] In this embodiment, the sliding shaft 510 moves along a preset direction after being subjected to force and strikes the base template 210. The vibration causes the concrete particles in the receiving cavity 201 to rearrange, effectively expelling the air and voids mixed in during the pouring process, reducing or even avoiding defects such as honeycomb, pitting, and holes in the concrete, significantly improving the density, structural strength, and surface smoothness of the stair concrete, and ensuring the safety and durability of the staircase.

[0065] See Figure 2 and Figure 6 In some embodiments, the sliding shaft 510 is slidably connected to the bottom side of the base template 210 along the axial direction of the sliding shaft 510; a plurality of striking pins 512 are radially protruding from the outer peripheral wall of the sliding shaft 510, and the plurality of striking pins 512 are spaced apart along the axial direction of the sliding shaft 510; a plurality of blocking blocks 211 are fixedly provided on the bottom side of the base template 210 corresponding to the position of the striking pins 512, and the plurality of blocking blocks 211 are evenly arranged parallel to the axial direction of the sliding shaft 510, and when the sliding shaft 510 slides along the axial direction on the bottom side of the base template 210, the blocking blocks 211 are located on the movement trajectory of the striking pins 512, and the striking pins 512 can collide with the blocking blocks 211 to generate striking vibration on the base template 210.

[0066] In this embodiment, when the sliding shaft 510 reciprocates along the axial direction, the multiple striking pins 512 radially protruding from its outer peripheral wall will collide sequentially with the corresponding blocking blocks 211 arranged on the bottom side of the base template 210, thereby forming multi-point, continuous high-frequency striking vibration. Since the multiple striking pins 512 and blocking blocks 211 are evenly distributed along the axial direction of the sliding shaft 510, the vibration energy can be quickly and evenly transmitted to various parts of the concrete receiving cavity 201 through the base template 210, which can fully expel air and voids in different positions inside the concrete, effectively solving the problems of insufficient local compaction and uneven density that are easy to occur with traditional single-point striking, thereby improving the overall density of the stair concrete pouring, reducing surface defects such as honeycomb and pitting, and ensuring the structural strength and surface flatness of the stair after molding.

[0067] See Figure 2 and Figure 6In some embodiments, the bottom side of the template frame 200 is provided with a mounting base 212, the mounting base 212 has a mounting hole, the sliding shaft 510 slides through the mounting hole, and the end of the sliding shaft 510 is provided with a limiting part 513. In the radial direction of the mounting hole, the size of the limiting part 513 is larger than the diameter of the mounting hole, and the limiting part 513 abuts against the mounting base 212.

[0068] In this embodiment, the sliding shaft 510 is guided and limited by the mounting hole of the mounting base 212, so that the sliding shaft 510 can only slide axially along the mounting hole, avoiding radial offset, jamming or tilting due to vibration during the striking process, ensuring that the sliding shaft 510 always moves in the preset direction, making the force of striking the base template 210 more precise and the vibration effect more stable; at the same time, the limiting part 513 at the end of the sliding shaft 510 is larger than the diameter of the mounting hole and abuts against the mounting base 212, which can effectively limit the maximum sliding stroke of the sliding shaft 510, prevent the sliding shaft 510 from falling out of the mounting hole, and improve the operational reliability and safety of the striking mechanism.

[0069] In addition, the mounting base 212 is located on the bottom side of the template frame 200. It has a small structure and reasonable layout. It will not interfere with the normal operation of the slope adjustment mechanism 300 and the width adjustment mechanism 400, nor will it occupy the effective space of the concrete receiving cavity 201. While ensuring the stable operation of the striking mechanism, it will not affect the core functions of the template device such as slope adjustment and width adaptation, thus ensuring the overall practicality and adaptability of the device.

[0070] join Figure 2 and Figure 6 In some embodiments, the sliding shaft 510 is provided with a handle 511. The handle 511 provides the operator with a clear and comfortable point of force application, eliminating the need to directly hold the smooth body of the sliding shaft 510, thus avoiding slippage and loss of hand when pushing or pulling. The operator can easily drive the sliding shaft 510 to reciprocate along a preset direction through the handle 511, reducing the difficulty of applying force. Especially when there is high frequency of tapping and vibration, it can reduce hand fatigue and improve operating efficiency.

[0071] See Figures 1 to 3 In some embodiments, the width adjustment mechanism 400 further includes a connecting rod 440; a sliding template 410 is fixedly connected to the first end of at least two adjusting rods 420, and the second ends of all adjusting rods 420 corresponding to a sliding module are connected as a whole by the connecting rod 440.

[0072] In this embodiment, the operator only needs to apply force to the connecting rod 440 to drive multiple adjusting rods 420 to slide axially synchronously, thereby driving the corresponding sliding template 410 to move smoothly. Compared with driving with a single adjusting rod 420, this structure avoids tilting, jamming, or displacement of the sliding template 410 caused by uneven force on multiple adjusting rods 420, making the adjustment of the stair width dimension more precise and ensuring the shape regularity of the concrete receiving cavity 201.

[0073] Furthermore, the connecting rod 440 integrates multiple adjusting rods 420 in a coordinated manner, eliminating the need for operators to apply force to each adjusting rod 420 separately. Instead, the entire sliding template 410 can be moved through a single point of force application, simplifying the operation process. At the same time, the synchronous drive design reduces the need for repeated corrections to the position of the sliding template 410 during the adjustment process, shortens the width adjustment time, and further improves construction efficiency.

[0074] Figure 7 The diagram shown is a structural schematic of the lifting rod in an embodiment of this application.

[0075] See Figure 2 and Figure 7 In some embodiments, the lifting rod 310 includes a sleeve rod 311, a movable rod 312, and a limiting pin 313. The movable rod 312 is sleeved inside the sleeve rod 311. The sleeve rod 311 is provided with a plurality of locking holes along the axis. The movable rod 312 is provided with a connecting hole. The limiting pin 313 passes through the connecting hole and a locking hole.

[0076] In this embodiment, the lifting rod 310 adopts a sleeve rod 311 and a movable rod 312 sleeved structure. Multiple locking holes on the sleeve rod 311 are arranged along the axis. By using a limiting pin 313 passing through the connecting hole of the movable rod 312 and the locking holes at different positions, multiple positions of the lifting rod 310's telescopic length can be fixed. Operators can adjust the effective length of the lifting rod 310 according to the required slope of the staircase, thereby precisely controlling the flipping angle of the template frame 200, ensuring that the staircase slope meets design requirements, and improving the accuracy of construction dimensions.

[0077] The sleeve rod 311 and the movable rod 312 provide a large contact area. With the radial locking of the limiting pin 313, the supporting force can be effectively transmitted, preventing the lifting rod 310 from axial movement or radial displacement under load. The design of multiple locking holes allows for the selection of appropriate locking positions based on the weight of the template frame 200 and the construction load, making the supporting force of the lifting rod 310 more reasonable, further improving the stability of the template frame 200 during the pouring process, and preventing template deformation or displacement due to support failure.

[0078] Adjusting the length of the lifting rod 310 only requires pulling out the limiting pin 313, pushing the movable rod 312 along the axis of the sleeve rod 311 to the target position, and then inserting the limiting pin 313 into the corresponding locking hole to complete the fixing. No complicated tools or repeated disassembly of reinforcement parts are required. Compared with the traditional height adjustment method, this operation process is simple, shortens the slope adjustment time, reduces the labor intensity of operators, and improves construction efficiency.

[0079] See Figure 7 In some embodiments, the lifting rod 310 further includes a support rod 320, one end of which is hinged to the ground and the other end of which is hinged to the sleeve rod 311.

[0080] In this embodiment, one end of the support rod 320 is hinged to the ground and the other end is hinged to the sleeve rod 311, forming a triangular support structure together with the lifting rod 310. The triangular structure has natural geometric stability, which can effectively distribute the load of the formwork frame 200 and the concrete, avoid axial bending or radial displacement of the lifting rod 310 due to unilateral force, significantly improve the support reliability of the formwork frame 200 during the pouring process, and prevent stair slope displacement or concrete component size deviation caused by support deformation.

[0081] Furthermore, the added support rod 320 can share the vertical support force of the lifting rod 310, allowing the load to be transferred to the ground through the lifting rod 310 and the support rod 320, avoiding local stress concentration caused by the lifting rod 310 bearing the entire load alone; at the same time, the hinged connection allows for slight angle adjustments between the support rod 320, the lifting rod 310, and the ground, adapting to the stress changes under different inclinations of the template frame 200, reducing stress damage caused by rigid connections, and extending the service life of the lifting rod 310 and the entire support system.

[0082] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A staircase formwork device for building construction, characterized in that, include: The support frame is fixedly connected to the ground. The template frame is rotatably connected to the support frame on one side along its length. The template frame includes a base template and two support templates, with the two support templates respectively fixedly connected to both sides of the base template along its width. An inclination adjustment mechanism includes a lifting rod, one end of which is hinged to the bottom side of the base template, and the other end of which is fixedly connected to the ground; and The width adjustment mechanism includes two sliding templates, an adjusting rod, and a locking element. Each sliding template is parallel to a corresponding support template and is located inside the corresponding support template. The sliding template is slidably connected to the base template. The base template and the two sliding templates form a cavity for accommodating concrete. The outer peripheral wall of the adjusting rod has an axially extending mounting groove. The locking component includes a limiting ring, an elastic component, a locking plate, and multiple locking pins. The locking plate is installed in the mounting groove and extends axially along the adjusting rod. One side of the locking plate is connected to the groove wall of the mounting groove via the elastic component. The multiple locking pins are arranged and fixed on the other side of the locking plate along its extension direction. The limiting ring is installed on the outside of the support template. The support template has an assembly through hole, which is coaxial with the limiting ring. The adjusting rod slides through the assembly through hole and the limiting ring. The first end of the adjusting rod is fixedly connected to the sliding template, and the second end of the adjusting rod is used to receive force to drive the sliding template to move. The limiting ring has a snap-fit ​​groove extending radially from the inner ring, and one of the multiple locking pins passes through the snap-fit ​​groove. The staircase formwork device for building construction also includes a striking mechanism, which includes a sliding shaft that is movably connected to the bottom side of the base formwork. The sliding shaft is configured to move along a preset direction and strike the base formwork under force, so as to compact the concrete in the receiving cavity through vibration. The sliding shaft and the bottom side of the base template are slidably connected in the axial direction of the sliding shaft; The outer peripheral wall of the sliding shaft is provided with a plurality of striking pins protruding radially, and the plurality of striking pins are arranged at intervals along the axial direction of the sliding shaft; the bottom side of the base template is provided with a plurality of blocking blocks corresponding to the positions of the striking pins, and the plurality of blocking blocks are evenly arranged parallel to the axial direction of the sliding shaft, and when the sliding shaft slides along the axial direction on the bottom side of the base template, the blocking blocks are located on the movement trajectory of the striking pins, and the striking pins can collide with the blocking blocks to generate striking vibrations on the base template.

2. The staircase formwork device for building construction as described in claim 1, characterized in that, The width adjustment mechanism further includes a pressing block, which is fixedly connected to the locking plate and located on one side near the second end of the adjustment rod.

3. The staircase formwork device for building construction as described in claim 1, characterized in that, The bottom side of the template frame is provided with a mounting base, the mounting base has a mounting hole, the sliding shaft slides through the mounting hole, the end of the sliding shaft is provided with a limiting part, in the radial direction of the mounting hole, the size of the limiting part is larger than the diameter of the mounting hole, and the limiting part abuts against the mounting base.

4. The staircase formwork device for building construction as described in claim 1, characterized in that, The sliding shaft is equipped with a handle.

5. The staircase formwork device for building construction as described in claim 1, characterized in that, The width adjustment mechanism also includes a connecting rod; One of the sliding templates is fixedly connected to the first end of at least two of the adjusting rods, and the second ends of all the adjusting rods corresponding to one of the sliding templates are connected by connecting rods.

6. The staircase formwork device for building construction as described in claim 1, characterized in that, The lifting rod includes a sleeve rod, a movable rod, and a limiting pin. The movable rod is sleeved inside the sleeve rod. The sleeve rod has multiple locking holes along its axis. The movable rod has a connecting hole. The limiting pin passes through the connecting hole and one of the locking holes.

7. The staircase formwork device for building construction as described in claim 6, characterized in that, The lifting rod also includes a support rod, one end of which is hinged to the ground and the other end of which is hinged to the sleeve rod.

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