Telescopic clear height monitor

Abstract

The utility model provides a telescopic clear height monitor, and relates to the technical field of building construction, the telescopic clear height monitor comprises a fixed part, and a movable part, a sensing device and an alarm device which are arranged on the fixed part, the movable part is used for being in sliding connection with the fixed part; the sensing device is configured to control the alarm device to work when the movable part moves to the second position from the first position relative to the fixed part. In the building construction process, if the downward deformation of the top plate formwork exceeds a reasonable range, the bottom end of the movable part can move downwards to the second position, at the moment, the sensing device senses that the movable part has descended to the second position from the first position, and then the alarm device can be controlled to work; therefore, constructors are reminded to know that the roof formwork deforms downwards and exceeds a reasonable range, the constructors can take remedial measures in time, the construction efficiency is improved, it is guaranteed that the flatness and the clear height of the lower side face of a follow-up formed roof meet the requirements, and the construction cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and particularly relates to a telescopic net height monitor. Background Art

[0002] During the concrete construction process, especially for large-span and large-area roof slabs, only relying on the arching of the roof slab formwork and the support of the scaffolding cannot ensure the flatness control of the roof slab formwork during the pouring process. Especially during the process of pouring concrete on the roof slab formwork to form the roof slab, construction workers cannot timely know whether the roof slab formwork always remains flat, that is, the flatness of the roof slab cannot be guaranteed. If a certain position of the roof slab formwork becomes uneven due to the weight of concrete, construction workers, and the concrete placing boom, it will affect the net height between the roof slab formwork and the ground, and thus affect the net height of the roof slab formed on the subsequent roof slab formwork and the flatness of the lower side. The post-treatment is very troublesome, often requiring ceiling chiseling, ceiling repair, and in severe cases of downward deformation, even re-pouring construction of the roof slab, resulting in a large investment of financial and material resources. Content of the Utility Model

[0003] The utility model aims to improve the flatness and forming efficiency after the roof slab is poured and formed.

[0004] To solve the above problems, the utility model provides a telescopic net height monitor, which includes a fixing member, a movable member, a sensing device, and an alarm device. The movable member, the sensing device, and the alarm device are respectively arranged on the fixing member, and the movable member is used for sliding connection with the fixing member. The top end of the movable member is used for abutting against the roof slab formwork. The sensing device is configured to control the alarm device to work when the movable member moves from a first position relative to the fixing member to a second position.

[0005] The telescopic net height monitor provided by the utility model can be used in building construction to measure the net height of the top formwork. Before pouring concrete onto the upper side of the top formwork to form the top plate, the movable member can be moved upward relative to the fixed member until the first position (this position is relative to the fixed member), and then the fixed member of the telescopic net height monitor can be fixed below the top formwork, for example, fixed on the scaffold under the top formwork, and the top end of the movable member in the first position just abuts against the lower side of the top formwork. After that, concrete can be poured above the top formwork. During the process of pouring concrete, if the top formwork has a downward deflection deformation due to reasons such as the weight of concrete, construction workers, and the concrete placer, it will drive the movable member to move downward from the first position. When the downward deformation of the top formwork exceeds the reasonable range, the bottom end of the movable member will move downward to the second position accordingly. At this time, the sensing device senses that the movable member has descended from the first position to the second position, and can control the alarm device to work, so as to remind the construction workers that the top formwork has deformed downward and exceeded the reasonable range, enabling the construction workers to take remedial measures in a timely manner, improving construction efficiency, ensuring that the flatness and the net height of the lower side of the subsequent formed top plate meet the requirements, and saving construction costs.

[0006] Further, the sensing device is a limit switch. When the movable member moves from the first position to the second position or exceeds the second position, the movable member triggers the limit switch to make the alarm device work.

[0007] Further, the fixed member is a sleeve rod, the movable member is an inner rod inserted and matched with the sleeve rod, and the inner rod is slidably connected to the sleeve rod; and / or, scale lines are provided on the inner rod.

[0008] Further, the telescopic net height monitor further includes a base. The bottom end of the sleeve rod is provided with a base, the top end of the sleeve rod is provided with an opening, and the inner rod is used to extend upward out of the sleeve rod through the opening or retract downward into the sleeve rod through the opening.

[0009] Further, the telescopic net height monitor further includes a first spring. The first spring is located inside the sleeve rod, and both ends of the first spring respectively abut against the base and the inner rod.

[0010] Further, the telescopic net height monitor further includes an intermediate rod. The intermediate rod is arranged inside the sleeve rod, the bottom end of the intermediate rod is connected to the base, and a guide groove is provided on the inner rod. The guide groove is inserted and matched with the intermediate rod.

[0011] Further, the sensing device and the first spring are respectively located on both sides of the intermediate rod.

[0012] Further, the telescopic net height monitor further includes a power source. The sensing device includes an insulating seat, a first conductive member, a second conductive member, and a second spring. An inner cavity is provided inside the insulating seat. An opening is provided on one side of the inner cavity facing the inside of the sleeve rod. The first conductive member is disposed in the inner cavity. The second conductive member is slidably connected to the inner cavity, and one end of the second conductive member away from the first conductive member is a spherical surface. The second spring is disposed between the second conductive member and the first conductive member, and the second spring is used to drive the spherical surface of the second conductive member to extend into the inside of the sleeve rod. Wherein, the power source, the alarm device, the first conductive member, and the second conductive member form a control circuit. When the first conductive member comes into contact with the second conductive member, the control circuit forms a closed circuit.

[0013] Further, a receiving cavity is provided on one side of the second conductive member facing the first conductive member. At least a part of the second spring is located in the receiving cavity, and the material of the second spring is an insulating material.

[0014] Further, the telescopic net height monitor further includes a control panel. The sensing device and the alarm device are respectively electrically connected to the control panel, and the sensing device is used to control the alarm device to work through the control panel. Description of the Drawings

[0015] Figure 1 is the front view structural schematic diagram of the telescopic net height monitor according to the embodiment of the present invention;

[0016] Figure 2 is the cross-sectional view of the telescopic net height monitor according to the embodiment of the present invention;

[0017] Figure 3 is Figure 2 the enlarged structural schematic diagram of the sensing device in

[0018] Description of the Reference Numerals:

[0019] 1. Fixed member; 2. Movable member; 21. Scale line; 22. Guide groove; 3. Sensing device; 31. Insulating seat; 311. Inner cavity; 32. First conductive member; 33. Second conductive member; 331. Spherical surface; 332. Receiving cavity; 34. Second spring; 4. Alarm device; 5. Base; 6. First spring; 7. Intermediate rod; 8. Control panel. Detailed Embodiments

[0020] In order to make the above-mentioned objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0022] Moreover, in the drawings, the Z-axis represents the vertical direction, that is, the up and down direction, and the positive direction of the Z-axis represents up, and the negative direction of the Z-axis represents down; the Y-axis represents the horizontal direction, that is, the left and right direction, and the positive direction of the Y-axis represents left, and the negative direction of the Y-axis represents right. At the same time, it should be noted that the meanings represented by the aforementioned Z-axis and Y-axis are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0023] See Figure 1-2 , a telescopic net height monitor according to an embodiment of the present utility model, includes a fixing member 1, a movable member 2, a sensing device 3 and an alarm device 4. The movable member 2, the sensing device 3 and the alarm device 4 are respectively arranged on the fixing member 1, and the movable member 2 is used for sliding connection with the fixing member 1. The top end of the movable member 2 is used for abutting against the top formwork; the sensing device 3 is configured to control the alarm device 4 to work when the movable member 2 moves from a first position relative to the fixing member 1 to a second position.

[0024] The telescopic net height monitor provided in this embodiment can be used in building construction to measure the net height of the top formwork. Before pouring concrete on the upper side of the top formwork to form the top plate, the movable member 2 can be first moved upward relative to the fixing member 1 until the first position (this position is relative to the fixing member 1), and then the fixing member 1 of the telescopic net height monitor is fixed under the top formwork, for example, fixed on the scaffold under the top formwork, and the top end of the movable member 2 in the first position just abuts against the lower side of the top formwork. Then, concrete can be poured above the top formwork. During the process of pouring concrete, if the top formwork undergoes a downward deflection deformation due to the weight of concrete, construction workers, concrete spreaders, etc., it will drive the movable member 2 to move downward from the first position. If the downward deformation of the top formwork exceeds the reasonable range, the bottom end of the movable member 2 will move downward to the second position accordingly. At this time, the sensing device 3 senses that the movable member 2 has moved from the first position to the second position, and can control the alarm device 4 to work to remind the construction workers that the top formwork has deformed downward and exceeded the reasonable range, enabling the construction workers to take remedial measures in time, improving the construction efficiency, ensuring that the flatness and the net height of the lower side of the subsequent formed top plate meet the requirements, and saving the construction cost.

[0025] During the use of the telescopic net height monitor, it can be arranged at the position corresponding to the concrete distributor under the lower side of the roof formwork, or at the center position of the roof formwork. The deformation amounts at these two positions are relatively large. Of course, according to the construction situation, one or more telescopic net height monitors can be arranged at different positions on the lower side of the roof formwork.

[0026] Optionally, the sensing device 3 is a limit switch. When the moving member 2 moves from the first position to the second position or exceeds the second position, the moving member 2 triggers the limit switch to cause the alarm device 4 to operate.

[0027] In this embodiment, the sensing device 3 can be a limit switch. When the moving member 2 is at the first position relative to the fixed member 1, the moving member 2 is located above the limit switch. At this time, the limit switch is, for example, in an open state. When the moving member 2 moves downward due to the deformation of the roof formwork and moves to the second position relative to the fixed member 1, the moving member 2 will trigger the limit switch to make the limit switch in a closed state, thereby controlling the alarm device 4 to operate.

[0028] It can be understood that when the moving member 2 moves downward to the second position, the limit switch is just triggered. After the moving member 2 continues to move downward and exceeds the second position, the moving member 2 still keeps the limit switch in a closed state.

[0029] Optionally, referring to Figure 1-2 , the fixed member 1 is a sleeve rod, the moving member 2 is an inner rod inserted and matched with the sleeve rod, and the inner rod is slidably connected to the sleeve rod; and / or, scale lines 21 are provided on the inner rod.

[0030] In this embodiment, the fixed rod has a hollow rod structure, denoted as a sleeve rod, and the moving member 2 is an inner rod that can be inserted into the sleeve rod. In this way, the sleeve rod can provide a guiding function for the sliding of the inner rod. Among them, scale lines 21 can be provided on the inner rod, and construction personnel can clearly obtain the distance that the moving member 2 descends from the first position.

[0031] Optionally, referring to Figure 1-2 , the telescopic net height monitor further includes a base 5. The base 5 is provided at the bottom end of the sleeve rod, and an opening is provided at the top end of the sleeve rod. The inner rod is used to extend upward out of the sleeve rod through the opening or retract downward into the sleeve rod through the opening.

[0032] In this embodiment, the bottom end of the sleeve rod is closed by the base 5. The sleeve rod only has an opening at the top end for the inner rod to extend or retract. The base 5 ensures that the inner rod will not detach downward from the sleeve rod. When the telescopic net height monitor is not in use, the telescopic net height monitor can be placed upright on the ground through the base 5. When using the telescopic net height monitor, it can be connected and fixed to the scaffolding through the base 5 or the sleeve rod.

[0033] Optionally, refer to Figure 1-2 , the telescopic net height monitor further includes a first spring 6, the first spring 6 is located inside the sleeve rod, and both ends of the first spring 6 are respectively abutted against the base 5 and the inner rod.

[0034] In this embodiment, the first spring 6 is arranged inside the sleeve rod. Under the action of the first spring 6, the inner rod can be ensured to be in the first position. Among them, an anti - detachment structure (not shown in the figure) can be arranged at the top end of the sleeve rod and / or the bottom end of the inner rod to ensure that the inner rod will not be detached upward from the sleeve rod; in this case, the first spring 6 can always be in a compressed state to be used for driving the inner rod to move upward to the first position and will not be detached from the sleeve rod.

[0035] Optionally, refer to Figure 1-2 , the telescopic net height monitor further includes an intermediate rod 7, the intermediate rod 7 is arranged inside the sleeve rod, the bottom end of the intermediate rod 7 is connected to the base 5, and a guiding groove 22 is arranged on the inner rod, and the guiding groove 22 is in plug - in fit with the intermediate rod 7.

[0036] In this embodiment, the intermediate rod 7 can be located at the middle position between the left and right side walls inside the sleeve rod. The intermediate rod 7 can be fixedly connected to the sleeve rod. For example, the front and rear side walls of the intermediate rod 7 are correspondingly fixedly connected to the front and rear side walls of the sleeve rod, and the bottom end of the intermediate rod 7 can also be fixedly connected to the fixed seat. The inner rod is provided with a guiding groove 22 that is in plug - in fit with the intermediate rod 7. During the sliding process of the inner rod, not only the sleeve rod provides guidance for it, but also the intermediate rod 7 provides guidance for it, making the movement of the inner rod more stable.

[0037] Optionally, refer to Figure 1-2 , the sensing device 3 and the first spring 6 are respectively located on both sides of the intermediate rod 7.

[0038] In this embodiment, the first spring 6 is located between the intermediate rod 7 and the left side wall of the sleeve rod, while the sensing device 3 is located at the right side wall of the sleeve rod. In this way, during the process that the inner rod moves downward from the first position and compresses the first spring 6, the first spring 6 will not accidentally trigger the sensing device 3, ensuring the accuracy of the net height detection of the top plate formwork.

[0039] Optionally, refer to Figure 2-3, the telescopic net height monitor further includes a power supply (not shown in the figure). The sensing device 3 includes an insulating seat 31, a first conductive member 32, a second conductive member 33, and a second spring 34. An inner cavity 311 is provided inside the insulating seat 31. One side of the inner cavity 311 facing the inside of the sleeve rod is provided with an opening. The first conductive member 32 is disposed in the inner cavity 311. The second conductive member 33 is slidably connected to the inner cavity 311, and one end of the second conductive member 33 away from the first conductive member 32 is a spherical surface 331. The second spring 34 is disposed between the second conductive member 33 and the first conductive member 32. The second spring 34 is used to drive the spherical surface 331 of the second conductive member 33 to extend into the inside of the sleeve rod. Among them, the power supply, the alarm device 4, the first conductive member 32, and the second conductive member 33 form a control circuit. When the first conductive member 32 contacts the second conductive member 33, the control circuit forms a closed circuit.

[0040] In this embodiment, the sensing device 3 can be a limit switch. Specifically, the limit switch includes an insulating seat 31, a first conductive member 32, a second conductive member 33, and a second spring 34. The inside of the insulating seat 31 has an inner cavity 311 for accommodating the first conductive member 32, the second conductive member 33, and the second spring 34. One side of the inner cavity 311 facing the inside of the sleeve rod is an opening for the second conductive member 33 to extend out of or retract into the inner cavity 311. Among them, the second conductive member 33 extending out of the inner cavity 311 means extending into the inside of the sleeve rod.

[0041] Since the second spring 34 is disposed between the second conductive member 33 and the first conductive member 32, the second spring 34 gives the second conductive member 33 an elastic force to extend out of the inner cavity 311. When the inner rod moves downward from the first position, when the inner rod moves to the second position, the bottom end of the inner rod will contact the spherical surface 331 of the second conductive member 33, so that the second conductive member 33 overcomes the elastic force of the second spring 34 and moves towards the first conductive member 32 until the second conductive member 33 contacts the first conductive member 32. At this time, the control circuit forms a closed circuit and the alarm device 4 works.

[0042] It can be understood that an anti - detachment structure (not shown in the figure) can be provided on the insulating seat 31 or / and the second conductive member 33 to ensure that the second conductive member 33 will not detach from the inner cavity 311 under the elastic force of the second spring 34.

[0043] Optionally, referring to Figure 3 , a receiving cavity 332 is provided on one side of the second conductive member 33 facing the first conductive member 32. At least part of the second spring 34 is located in the receiving cavity 332, and the material of the second spring 34 is an insulating material.

[0044] In this embodiment, a receiving cavity 332 is provided on one side of the second conductive member 33 facing the first conductive member 32 for receiving at least a part of the second spring 34, which improves the integration of the sensing device 3 and reduces the dependence on the size of the sleeve rod. The material of the second spring 34 is an insulating material to ensure that when the second conductive member 33 is not in contact with the first conductive member 32, the two will not conduct electricity due to the second spring 34.

[0045] Optionally, the telescopic net height monitor further includes a control panel 8, and the sensing device 3 and the alarm device 4 are respectively electrically connected to the control panel 8, and the sensing device 3 is used to control the alarm device 4 to work through the control panel 8.

[0046] In this embodiment, a control panel 8 may also be included. When the sensing device 3 senses that the moving member 2 moves from the relative first position to the second position, the sensing device 3 may also transmit a signal to the control panel 8, and then the control panel 8 controls the alarm device 4 to work.

[0047] The terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0048] Although the present disclosure of the utility model is disclosed as above, the protection scope of the present disclosure of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure of the utility model, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. A telescopic net height monitor, characterized in that, It includes a fixing member (1), a movable member (2), a sensing device (3) and an alarm device (4). The movable member (2), the sensing device (3) and the alarm device (4) are respectively arranged on the fixing member (1), and the movable member (2) is used for sliding connection with the fixing member (1). The top end of the movable member (2) is used for abutting against the top plate formwork. The sensing device (3) is configured to control the alarm device (4) to work when the movable member (2) moves from a first position relative to the fixing member (1) to a second position.

2. The telescopic net height monitor according to claim 1, wherein The sensing device (3) is a limit switch. When the movable member (2) moves from the first position to the second position or exceeds the second position, the movable member (2) triggers the limit switch to make the alarm device (4) work.

3. The telescopic net height monitor according to claim 1, characterized in that, The fixing member (1) is a sleeve rod, and the movable member (2) is an inner rod that is inserted and cooperated with the sleeve rod. The inner rod is slidably connected to the sleeve rod; and / or, scale lines (21) are provided on the inner rod.

4. The telescopic net height monitor according to claim 3, wherein It further includes a base (5). The bottom end of the sleeve rod is provided with the base (5), and the top end of the sleeve rod is provided with an opening. The inner rod is used to extend upward out of the sleeve rod or retract downward into the sleeve rod through the opening.

5. The telescopic net height monitor according to claim 4, characterized in that, It further includes a first spring (6). The first spring (6) is located inside the sleeve rod, and both ends of the first spring (6) respectively abut against the base (5) and the inner rod.

6. The telescopic net height monitor according to claim 5, characterized in that, It further includes an intermediate rod (7). The intermediate rod (7) is arranged inside the sleeve rod. The bottom end of the intermediate rod (7) is connected to the base (5). A guiding groove (22) is provided on the inner rod, and the guiding groove (22) is inserted and cooperated with the intermediate rod (7).

7. The telescopic net height monitor according to claim 6, characterized in that, The sensing device (3) and the first spring (6) are respectively located on both sides of the intermediate rod (7).

8. The telescopic net height monitor according to claim 3, characterized in that, It further includes a power source. The sensing device (3) includes an insulating seat (31), a first conductive member (32), a second conductive member (33) and a second spring (34). An inner cavity (311) is provided inside the insulating seat (31). An opening is provided on one side of the inner cavity (311) facing the inside of the sleeve rod. The first conductive member (32) is arranged in the inner cavity (311). The second conductive member (33) is slidably connected to the inner cavity (311), and the end of the second conductive member (33) away from the first conductive member (32) is a spherical surface (331). The second spring (34) is arranged between the second conductive member (33) and the first conductive member (32). The second spring (34) is used to drive the spherical surface (331) of the second conductive member (33) to extend into the inside of the sleeve rod. Wherein, the power source, the alarm device (4), the first conductive member (32) and the second conductive member (33) form a control circuit. When the first conductive member (32) contacts the second conductive member (33), the control circuit forms a closed circuit.

9. The telescopic net height monitor according to claim 8, characterized in that, One side of the second conductive member (33) facing the first conductive member (32) is provided with a receiving cavity (332). At least part of the second spring (34) is located in the receiving cavity (332), and the material of the second spring (34) is an insulating material.

10. The telescopic net height monitor according to any one of claims 1-9, characterized in that, It further includes a control panel (8). The sensing device (3) and the alarm device (4) are respectively electrically connected to the control panel (8), and the sensing device (3) is used to control the alarm device (4) to work via the control panel (8).

Images