Cylindrical building template

Abstract

The utility model discloses a cylindrical building formwork which comprises a formwork body and a clamp, the formwork body comprises two semi-cylindrical formwork shells, the clamp is installed on the outer side of the formwork body, a fixing mechanism is arranged on the clamp, pre-fixing pins are arranged at the top and the bottom of the formwork body, the clamp comprises a first embracing ring and a second embracing ring, and the first embracing ring is connected with the second embracing ring. The first embracing ring and the second embracing ring are provided with shaft holes and first rotating shafts, the first embracing ring and the second embracing ring are rotationally connected through cooperation of the first shaft holes and the first rotating shafts, and the fixing mechanism comprises a fixing seat, a top block, a fixing ring and an adjusting rotating disc; the fixing ring is mounted at the end, away from the first rotating shaft, of the first holding ring and rotationally connected with the first holding ring, the ejector block is slidably mounted in the fixing seat, and the adjusting turntable is mounted on the front end face of the fixing seat and in transmission connection with the ejector block. The device has the advantages of convenient installation and high safety.

Description

Technical Field

[0001] The utility model relates to the technical field of building formwork, in particular to a cylindrical building formwork. Background Art

[0002] A building formwork is a temporary support structure widely used in the building construction process. Its purpose is to support newly poured concrete or other building materials until these materials harden and can stand on their own. The formwork system ensures that the concrete can be accurately formed according to the designer's specifications and dimensions, while maintaining the correct position of the structure, and can bear its own weight and other loads that may be applied during the construction process. When constructing a hollow column-shaped structure, it is necessary to set up formwork, arrange steel bars, install hollow pipes, and then pour between the hollow pipes and the formwork to form a cylindrical building.

[0003] Most of the existing cylindrical building formworks are fixed by flanges, which require a large number of bolts to be installed. A small number are fixed by clamps, and bolts still need to be installed at both ends of the clamp, so external tools need to be used. This is not only cumbersome to operate, but also prone to the risk of tools and bolts falling and injuring workers. Therefore, a cylindrical building formwork is needed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cylindrical building formwork, which has the advantages of convenient installation and high safety, and solves the problems in the prior art that when installing a cylindrical building formwork, external tools need to be used for fixation, resulting in too low installation efficiency of the building formwork and certain potential safety hazards.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A cylindrical building formwork, comprising a formwork main body and a clamp. The formwork main body includes two semi-cylindrical formwork shells. The clamp is installed on the outer side of the formwork main body. A fixing mechanism is arranged on the clamp. Pre-fixed pins are arranged at the top and bottom of the formwork main body.

[0006] The clamp includes a first clamping ring and a second clamping ring. A shaft hole and a first rotating shaft are arranged on the first clamping ring and the second clamping ring. The first clamping ring and the second clamping ring are rotationally connected through the cooperation of the first shaft hole and the first rotating shaft. The fixing mechanism includes a fixing seat, a top block, a fixing ring and an adjusting turntable. The fixing seat is fixedly installed at the end of the second clamping ring away from the first rotating shaft. The fixing ring is installed at the end of the first clamping ring away from the first rotating shaft and is rotationally connected therewith. The top block is slidably installed in the fixing seat. The adjusting turntable is installed on the front end face of the fixing seat and is in transmission connection with the top block.

[0007] Preferably, as a cylindrical building formwork of the present utility model, a chute is provided on the side of the fixed seat, the top block is installed in the chute, a screw rod rotatably connected is arranged in the chute, a threaded hole is provided on the side of the top block, and the screw rod is inserted into the threaded hole and threadedly connected with the top block.

[0008] Preferably, as a cylindrical building formwork of the present utility model, a worm gear is fixedly installed at the inner end of the screw rod away from the threaded hole, a second rotating shaft is provided at the bottom of the adjusting turntable, a worm is provided at the bottom of the second rotating shaft, and the adjusting turntable and the screw rod are in transmission connection through the cooperation of the worm gear and the worm.

[0009] Preferably, as a cylindrical building formwork of the present utility model, a rocker is provided on the side of the adjusting turntable, a lug plate and a third rotating shaft are provided at the connection between the rocker and the turntable, and the rocker and the turntable are rotatably connected through the lug plate and the third rotating shaft.

[0010] Preferably, as a cylindrical building formwork of the present utility model, a card slot having the same shape as the fixed ring is provided at the end of the top block away from the threaded hole.

[0011] Preferably, as a cylindrical building formwork of the present utility model, a clamp positioning groove is provided on the outer end face of the formwork main body, and the clamp positioning groove is an annular notch.

[0012] Preferably, as a cylindrical building formwork of the present utility model, a pin slot opposite to the shape of the pre-fixed pin is provided at the top edge of the semi-cylindrical formwork shell, and the pre-fixed pin is inserted into the pin slot and slidably connected with the two groups of semi-cylindrical formwork shells.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By providing a fixing mechanism composed of a fixed seat, a top block, a fixed ring and an adjusting turntable on the clamp, and transmitting through the cooperation of a worm gear, a worm and a screw rod, the worker only needs to rotate the adjusting turntable to easily tighten or loosen the clamp, without complicated manual adjustment and without the aid of external tools, greatly reducing the labor intensity. The deceleration effect of the worm gear and worm makes it possible to generate sufficient clamping force even with a small rotational force. The operation is simple and labor-saving. The introduction of the rocker structure further optimizes the operation experience, increases the torque, makes it easier to rotate the adjusting turntable, and enables the rapid completion of the formwork fastening process even with one-handed operation, improving the work efficiency of the worker.

[0015] 2. The utility model provides stable fastening force through the combination of the lead screw, the top block, and the worm and worm gear, ensuring the stability of the formwork during construction, avoiding potential safety hazards caused by formwork loosening. The one-way transmission characteristic of the worm and worm gear effectively prevents self-loosening under external pressure, improving the operation safety. The design of the pre-fixed pin not only facilitates the positioning of the formwork but also provides temporary stability before the clamp is fully installed. The precise positioning of the clamp positioning groove and the pin groove ensures the correct docking between formwork components, avoiding stress concentration or formwork deformation caused by improper installation, and further ensuring the safety and stability of the operation structurally. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is an exploded view of the utility model;

[0018] Figure 3 is an exploded view of the clamp of the utility model;

[0019] Figure 4 is the Figure 3 enlarged view of part A in the utility model.

[0020] In the figure: 1. Formwork main body; 101. Semi-cylindrical formwork shell; 102. Clamp positioning groove; 103. Pin groove; 2. Clamp; 201. First clamping ring; 202. Second clamping ring; 203. Shaft hole; 204. First rotating shaft; 3. Fixing mechanism; 301. Fixed seat; 302. Fixed ring; 303. Adjusting turntable; 304. Top block; 305. Slide groove; 306. Card slot; 307. Screw hole; 308. Lead screw; 309. Worm; 310. Worm gear; 311. Rocker; 312. Ear plate; 313. Third rotating shaft; 314. Second rotating shaft; 4. Pre-fixed pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Please refer to Figures 1-4 , a cylindrical building formwork, including a formwork main body 1 and a clamp 2. The formwork main body 1 includes two semi-cylindrical formwork shells 101. The clamp 2 is installed on the outside of the formwork main body 1. A fixing mechanism 3 is provided on the clamp 2. Pre-fixed pins 4 are provided at the top and bottom of the formwork main body 1;

[0022] The clamp 2 includes a first clamping ring 201 and a second clamping ring 202. The first clamping ring 201 and the second clamping ring 202 are provided with shaft holes 203 and a first rotating shaft 204. The first clamping ring 201 and the second clamping ring 202 are rotationally connected through the cooperation of the first shaft hole 203 and the first rotating shaft 204. The fixing mechanism 3 includes a fixing base 301, a top block 304, a fixing ring 302 and an adjusting turntable 303. The fixing base 301 is fixedly installed at the end of the second clamping ring 202 away from the first rotating shaft 204. The fixing ring 302 is installed at the end of the first clamping ring 201 away from the first rotating shaft 204 and is rotationally connected thereto. The top block 304 is slidably installed in the fixing base 301. The adjusting turntable 303 is installed on the front end face of the fixing base 301 and is drivingly connected to the top block 304.

[0023] A chute 305 is provided on the side surface of the fixing base 301. The top block 304 is installed in the chute 305. A screw rod 308 rotatably connected is provided in the chute 305. A threaded hole 307 is provided on the side surface of the top block 304. The screw rod 308 is inserted into the threaded hole 307 and is threadedly connected to the top block 304.

[0024] By rotating the screw rod 308, the top block 304 slides outward along the chute 305, so that the fixing ring 302 stuck on the top block 304 moves away from the first clamping ring 201 end, causing the first clamping ring 201 and the second clamping ring 202 to tighten, thereby clamping and fixing the template body 1.

[0025] A worm gear 310 is fixedly installed at the inner end of the screw rod 308 away from the threaded hole 307. A second rotating shaft 314 is provided at the bottom of the adjusting turntable 303. A worm 309 is provided at the bottom of the second rotating shaft 314. The adjusting turntable 303 and the screw rod 308 are drivingly connected through the cooperation of the worm gear 310 and the worm 309.

[0026] The transmission through the worm gear 310 and the worm 309 has a good deceleration effect, can easily fix the clamp 2, and the worm gear 310 and the worm 309 have the characteristic of one-way transmission, which can effectively prevent the clamp 2 from loosening under pressure and ensure the safety of the fixing of the clamp 2.

[0027] A rocker 311 is provided on the side surface of the adjusting turntable 303. An ear plate 312 and a third rotating shaft 313 are provided at the connection between the rocker 311 and the turntable. The rocker 311 and the turntable are rotationally connected through the ear plate 312 and the third rotating shaft 313.

[0028] The torque during the rotation of the turntable is increased through the rocker 311, thus facilitating the worker to quickly rotate the turntable for tightening and fixing. The structure of the rotationally connected rocker 311 avoids interfering with the rotation of the fixing ring 302, thereby ensuring that the clamp 2 can be removed and guaranteeing the stability of the equipment.

[0029] A clamping groove 306 having the same shape as the fixing ring 302 is provided at the end of the top block 304 away from the threaded hole 307.

[0030] The stability of the connection between the top block 304 and the fixed ring 302 is improved through the card slot 306, preventing the fixed ring 302 from slipping off the top block 304 during the jacking operation, thereby enhancing the safety of the operation.

[0031] The outer end face of the template body 1 is provided with a clamp positioning groove 102, and the clamp positioning groove 102 is an annular notch.

[0032] The installation of the clamp 2 is facilitated through the clamp positioning groove 102, preventing the clamp 2 from shifting up and down after installation, resulting in uneven pressure distribution and affecting the sealing effect of the mold, thus ensuring the stability of the cooperation between the clamp 2 and the mold.

[0033] A pin slot 103 corresponding to the shape of the pre-fixed pin 4 is provided at the top edge of the semi-cylindrical formwork shell 101, and the pre-fixed pin 4 is inserted into the pin slot 103 to slidably connect with the two groups of semi-cylindrical formwork shells 101.

[0034] The template body 1 is pre-fixed through the pre-fixed pin 4, preventing the template body 1 from tipping over and injuring the operator after all the clamps 2 are removed, thereby enhancing the safety of the equipment.

[0035] When this building template is in use, first install the inner mold in the designated area, then install the template body 1 on the outside of the inner mold, align the top and bottom pre-fixed pins 4 and insert them into the pin slots 103 to initially fix the shape of the template body 1 and support the mold. Then, put the clamp 2 on the outside of the template body 1, rotate the fixed ring 302 to the front end of the top block 304, rotate and adjust the turntable 303 through the rocker 311. Due to the meshing of the worm gear 310 and the worm 309, the lead screw 308 is driven to rotate. When the lead screw 308 rotates, since it is threadedly connected to the top block 304, it pushes the top block 304 to slide outward along the chute 305, and then drives the fixed ring 302 to move away from the first clamping ring 201 end. The movement of the fixed ring 302 causes the first clamping ring 201 and the second clamping ring 202 to gradually approach, thereby clamping the template body 1 until the required tightening degree is reached. At this time, the card slot 306 and the fixed ring 302 are engaged with each other to confirm that the template body 1 is evenly and firmly clamped within the clamp 2, completing the tightening of the template.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cylindrical building template, comprising a template body (1) and a clamp (2), wherein the template body (1) comprises two semi-cylindrical form shells (101), and the clamp (2) is installed on the outside of the template body (1), characterized in that: The clamp (2) is provided with a fixing mechanism (3), and the top and bottom of the template body (1) are provided with pre-fixing pins (4); The clamp (2) comprises a first holding ring (201) and a second holding ring (202), wherein the first holding ring (201) and the second holding ring (202) are provided with an axial hole (203) and a first rotating shaft (204), wherein the first holding ring (201) and the second holding ring (202) are rotatably connected by the first axial hole (203) and the first rotating shaft (204), and the fixing mechanism (3) comprises a fixing seat (301), a top block (304), a fixing ring (302) and an adjusting dial (303), wherein the fixing seat (301) is fixedly mounted on the second holding ring (202), the fixing ring (302) is mounted on the first holding ring (201) and is rotatably connected thereto, the top block (304) is slidably mounted in the fixing seat (301), and the adjusting dial (303) is mounted on the front end surface of the fixing seat (301) and is transmission-connected to the top block (304).

2. A cylindrical building template as claimed in claim 1, characterized in that: A slide groove (305) is provided on the side of the fixing seat (301), the top block (304) is installed in the slide groove (305), a screw rod (308) for rotation connection is provided in the slide groove (305), a screw hole (307) is provided on the side of the top block (304), and the screw rod (308) is inserted into the screw hole (307) and is threadedly connected with the top block (304).

3. A cylindrical building template as claimed in claim 2, characterized in that: A worm wheel (310) is fixedly mounted on the screw rod (308); a second rotating shaft (314) is arranged at the bottom of the adjusting dial (303); a worm (309) is arranged at the bottom of the second rotating shaft (314); and the adjusting dial (303) and the screw rod (308) are connected in a transmission manner through the worm wheel (310) and the worm (309).

4. A cylindrical building template as claimed in claim 3, characterized in that: A rocking arm (311) is arranged on the side of the adjusting turntable (303); a lug plate (312) and a third rotating shaft (313) are arranged at the connection between the rocking arm (311) and the turntable; the rocking arm (311) and the turntable are rotationally connected via the lug plate (312) and the third rotating shaft (313).

5. A cylindrical building template as claimed in claim 2, characterized in that: A slot (306) having the same shape as the fixing ring (302) is provided on the side surface of the top block (304).

6. A cylindrical building template as claimed in claim 1, characterized in that: The outer end surface of the template body (1) is provided with a clamp positioning groove (102), and the clamp positioning groove (102) is a circular ring-shaped groove.

7. A cylindrical building template as claimed in claim 1, characterized in that: The top edge of the semi-cylindrical mold shell (101) is provided with a pin groove (103) corresponding to the shape of the pre-fixing pin (4), and the pre-fixing pin (4) is inserted into the pin groove (103) to be slidably connected with the two groups of semi-cylindrical mold shells (101).

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