Expansion single-side formwork erecting screw

Abstract

The utility model relates to an expansion unilateral formwork erecting screw in the technical field of formwork erecting screws, a driving device comprises a driving assembly arranged in a cavity of a formwork and used for rotating, and an adjusting assembly used for driving a supporting device to block a nut is arranged on a rod body of the driving assembly. The supporting device comprises a connecting rod movably connected with the adjusting assembly, and the end, away from the adjusting assembly, of the connecting rod is movably connected with a supporting assembly used for blocking the nut. Therefore, when two adjacent templates are fixed through threaded connection of the nuts and the first screw rods, the second screw rods can be driven to rotate through rotation of the rotating discs placed in the settling holes, and then the four supporting plates stored in the four storage grooves can be unfolded through connecting rods hinged to through grooves in the movable plates. Therefore, the nut can be prevented from being screwed out of the rod body of the first screw rod.

Description

Technical Field

[0001] The utility model relates to the technical field of formwork screw rods, in particular to an expansion single-side formwork screw rod. Background Art

[0002] In the process of structural reinforcement and reconstruction of concrete components such as beams and columns in industrial and civil buildings with increased cross-sectional dimensions, expansion screws are required to cooperate with channel steels or steel pipes to fix the formwork in a U-shaped or square-shaped form; however, when the existing expansion screws are used to support the formwork, there is a lack of a device to support the nut, which easily causes the nut to fall off when the formwork vibrates when the screws are used to fix the formwork;

[0003] For example, the Chinese patent application number CN202022179287.2 is an expansion single-sided formwork screw, in which an expansion fixing component is threadedly sleeved on the outer wall of one end of the screw body, and a fastening nut is threadedly connected to the other end of the screw body; the expansion fixing component is a columnar structure, and the cross-sectional area of ​​one end gradually increases toward the other end, and the large end of the expansion fixing component is close to the fastening nut. It has the following technical defects:

[0004] When two adjacent templates are fixed by using the threaded fit between the screw and the nut, due to the lack of a device to support and fix the nut, the template will vibrate during construction, causing the nut screwed on the screw to loosen and fall off the screw body, making it difficult to fix the two adjacent templates. Utility Model Content

[0005] In order to solve the problem raised in the above background technology that when two adjacent templates are fixed by using the threaded cooperation between the screw and the nut, due to the lack of a device for supporting and fixing the nut, the template will vibrate during construction, causing the nut screwed on the screw to loosen and fall off the rod body of the screw, making it inconvenient to fix the two adjacent templates, the utility model provides the following technical solutions:

[0006] An expansion single-sided formwork screw includes a screw device for fixing two adjacent templates, a support device for supporting the screw device is arranged above the template, and a support device for driving the support device to support the screw device is arranged in the rod body of the screw device.

[0007] The screw device comprises a screw rod 1 penetrating through the template, and a nut for fixing two templates is threadedly connected on the rod body of the screw rod 1.

[0008] The driving device comprises a driving assembly arranged in the cavity of the template for rotation, and an adjusting assembly for driving the supporting device to block the nut is arranged on the rod body of the driving assembly.

[0009] The supporting device comprises a connecting rod movably connected to the adjusting assembly, and one end of the connecting rod away from the adjusting assembly is movably connected to a supporting assembly for blocking the nut.

[0010] Furthermore, a sinking hole for driving the assembly to rotate is provided at the top end of the screw rod 1, and a receiving groove for receiving the supporting assembly is provided on the rod body of the screw rod 1, and there are four receiving grooves.

[0011] Furthermore, the driving assembly includes a screw rod 2 which is arranged in the cavity of the screw rod 1 for rotation, and a turntable for driving the screw rod 2 to rotate is fixedly installed on the top end of the screw rod 2, and the turntable rotates in the groove of the sedimentation hole.

[0012] Furthermore, the adjustment component includes a movable plate threadedly connected to the rod body of the second screw rod, and the plate body of the movable plate is provided with through grooves for hinged connection with the connecting rod, and the number of the through grooves is four.

[0013] Furthermore, the support assembly comprises a support plate for blocking the nut, and an articulated block for being hingedly connected to the connecting rod is fixedly mounted on one end of the support plate close to the connecting rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By setting up a driving device and a supporting device, when the nut and the screw rod one are threadedly connected to fix two adjacent templates, the screw rod two can be driven to rotate by rotating the turntable placed in the settlement hole, and the four supporting plates stored in the four storage grooves can be unfolded by the connecting rod hingedly connected through the through groove on the movable plate, so as to block the nut to prevent the nut from being screwed out from the rod body of the screw rod one. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the screw device structure of the utility model;

[0018] Figure 3 This is a cross-sectional view of a screw rod of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the support device of the utility model;

[0020] Figure 5 This is a diagram showing the coordination of the driving device and the supporting device of the utility model.

[0021] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0022] 100-template;

[0023] 200-screw device, 210-screw 1, 211-storage groove, 212-sinking hole, 220-nut;

[0024] 300-driving device, 310-driving assembly, 311-turntable, 312-screw rod 2, 320-adjusting assembly, 321-moving plate, 322-through slot;

[0025] 400 - supporting device, 410 - supporting assembly, 411 - supporting plate, 412 - hinge block, 420 - connecting rod. DETAILED DESCRIPTION

[0026] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0027] See also Figure 1-Figure 5 The utility model provides an expansion single-side formwork screw.

[0028] In the process of structural reinforcement and reconstruction of concrete components such as beams and columns of industrial and civil buildings with increased cross-sectional dimensions, expansion screws are required to be used in conjunction with channel steels or steel pipes to fix the formwork in a U-shaped or square-shaped form; however, when the existing expansion screws are used to support the formwork, due to the lack of a device for supporting the nut, it is easy to cause the nut to fall off when the formwork vibrates when the screw is fixing the formwork; therefore, it is necessary to improve it, including a screw device 200 for fixing two adjacent formworks 100, a support device 400 for supporting the screw device 200 is provided above the formwork 100, and a support device 400 for driving the support device 400 to support the screw device 200 is provided in the rod body of the screw device 200;

[0029] The screw device 200 includes a screw rod 210 that penetrates the template 100, and a nut 220 for fixing two templates 100 is threadedly connected to the rod body of the screw rod 210, so that when it is necessary to fix two adjacent templates 100, the screw rod 210 can be inserted into the two templates 100, and the nut 220 can be screwed into the rod body of the screw rod 210, so that the two adjacent templates 100 can be fixed;

[0030] The top of the screw rod 210 is provided with a sinking hole 212 for driving the assembly 310 to rotate, so that when the nut 220 and the screw rod 210 are threadedly connected to fix two adjacent templates 100, the driving assembly 310 placed in the sinking hole 212 can drive the support device 400 to block the nut 220 to prevent the nut 220 from being screwed out of the rod body of the screw rod 210; the rod body of the screw rod 210 is provided with a receiving groove 211 for receiving the support assembly 410, and there are four receiving grooves 211, which are distributed in a circular array on the rod body of the screw rod 210;

[0031] The driving device 300 includes a driving assembly 310 arranged in the cavity of the template 100 for rotation, and an adjusting assembly 320 is arranged on the rod body of the driving assembly 310 for driving the supporting device 400 to block the nut 220, so that when the nut 220 is threadedly connected to the screw rod 210 to fix two adjacent templates 100, the driving assembly 310 placed in the sinking hole 212 can drive the adjusting assembly 320 to block the supporting device 400 in the four receiving grooves 211 to prevent the nut 220 from being screwed out from the rod body of the screw rod 210;

[0032] The driving assembly 310 includes a second screw 312 arranged in the cavity of the first screw 210 for rotation, and the bottom end of the second screw 312 is connected to the bottom end of the cavity of the first screw 210 through a bearing to facilitate the rotation of the second screw 312; a turntable 311 for driving the second screw 312 to rotate is fixedly installed on the top of the second screw 312, and the turntable 311 rotates in the groove of the settlement hole 212; so that when the nut 220 and the first screw 210 are threadedly connected to fix two adjacent templates 100, the turntable 311 placed in the settlement hole 212 can be rotated to drive the second screw 312 to rotate, so that the adjustment assembly 320 can be driven to block the nut 220 with the support device 400 in the four receiving grooves 211 to prevent the nut 220 from being screwed out of the rod body of the first screw 210;

[0033] The adjusting assembly 320 includes a movable plate 321 which is threadedly connected to the rod body of the second screw rod 312. The plate body of the movable plate 321 is provided with a through slot 322 for hinged connection with the connecting rod 420. There are four through slots 322, which are arranged in a circular array on the plate body of the movable plate 321. When the nut 220 is threadedly connected to the first screw rod 210 to fix two adjacent templates 100, the second screw rod 312 can be rotated by rotating the turntable 311 placed in the sinking hole 212, so that the supporting device 400 hingedly connected by the through slot 322 on the movable plate 321 can move from the four receiving slots 211 and block the nut 220 to prevent the nut 220 from being screwed out of the rod body of the first screw rod 210.

[0034] The supporting device 400 includes a connecting rod 420 movably connected to the adjusting assembly 320, and one end of the connecting rod 420 away from the adjusting assembly 320 is movably connected to a supporting assembly 410 for blocking the nut 220, so that when the nut 220 is threadedly connected to the screw rod 1 210 to fix two adjacent templates 100, the turntable 311 placed in the sinking hole 212 can be rotated to drive the screw rod 2 312 to rotate, and the connecting rod 420 hingedly connected through the through slot 322 on the moving plate 321 can block the nut 220 with the supporting assembly 410 stored in the four storage slots 211, so as to prevent the nut 220 from being screwed out from the rod body of the screw rod 1 210;

[0035] There are four support assemblies 410, and the four support assemblies 410 are movably connected to the top ends of the four receiving grooves 211; the support assembly 410 includes a support plate 411 for blocking the nut 220, and a hinge block 412 for hinged connection with the connecting rod 420 is fixedly installed at one end of the support plate 411 close to the connecting rod 420; so that when the nut 220 is threadedly connected to the screw rod 210 to fix two adjacent templates 100, the turntable 311 placed in the settlement hole 212 can be rotated to drive the screw rod 2 312 to rotate, and the connecting rod 420 hingedly connected through the through groove 322 on the movable plate 321 can unfold the four support plates 411 received in the four receiving grooves 211, so as to block the nut 220 to prevent the nut 220 from being screwed out from the rod body of the screw rod 210.

[0036] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. An expansion single-side formwork screw, characterized in that: It comprises a screw device (200) for fixing two adjacent templates (100); a support device (400) for supporting the screw device (200) is arranged above the template (100); and a driving device (300) for driving the supporting device (400) to support the screw device (200) is arranged in the rod body of the screw device (200); The screw device (200) comprises a screw rod (210) penetrating the template (100), and a nut (220) for fixing the two templates (100) is threadedly connected on the rod body of the screw rod (210); The driving device (300) comprises a driving component (310) arranged in a cavity of the template (100) for rotation, and an adjusting component (320) for driving the supporting device (400) to block the nut (220) is arranged on the rod body of the driving component (310); The supporting device (400) comprises a connecting rod (420) movably connected to the adjusting assembly (320), and one end of the connecting rod (420) away from the adjusting assembly (320) is movably connected to a supporting assembly (410) for blocking the nut (220).

2. The expansion single-side formwork screw according to claim 1, characterized in that: The top end of the screw rod 1 (210) is provided with a sinking hole (212) for driving the assembly (310) to rotate, and the body of the screw rod 1 (210) is provided with a receiving groove (211) for receiving the supporting assembly (410), and there are four receiving grooves (211).

3. The expansion single-side formwork screw according to claim 2, characterized in that: The driving assembly (310) comprises a second screw (312) arranged in the cavity of the first screw (210) for rotation, a rotating disk (311) for driving the second screw (312) to rotate is fixedly mounted on the top end of the second screw (312), and the rotating disk (311) rotates in the groove of the sedimentation hole (212).

4. The expansion single-side formwork screw according to claim 3, characterized in that: The adjustment assembly (320) comprises a movable plate (321) threadedly connected to the rod body of the second screw rod (312), and the movable plate (321) is provided with four through slots (322) for hinged connection with the connecting rod (420) on the plate body.

5. The expansion single-side formwork screw according to claim 4, characterized in that: The support assembly (410) comprises a support plate (411) for blocking the nut (220), and an articulated block (412) for articulatingly connecting to the connecting rod (420) is fixedly mounted on one end of the support plate (411) close to the connecting rod (420).

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