TWI822575B - Tie rod device for formwork - Google Patents

Abstract

A pull rod device for a template, which includes: a pull rod and two inner blocking elements. The two ends of the pull rod are provided with threaded parts, and one of the inner blocking elements is respectively set inside the two threaded parts. Each threaded portion is provided with a stepped surface on its inner side, and the stepped surface can respectively exert a blocking effect on the inner blocking element. The inner blocking element is provided with two first protruding portions and a second protruding portion with different heights and protruding toward the inside. The pull rod will be confined between the first protruding portion and the second protruding portion. Then the inner blocking element can be firmly attached to the inner side wall of the formwork and serve as the inner support of the formwork.

Description

Tie rod device for formwork

The invention relates to a tie rod device of a formwork, which is equipped with an inner support member of the formwork and can directly penetrate a preset hole on the formwork to complete the operation of erecting the tie rod device.

When erecting the formwork, it is necessary to set the inner and outer supports of the formwork. Generally, the external support is erected after the second formwork is straightened, so that the erection work of the formwork can be completed more quickly. my country's new patent No. M390337 "Structural Improvement of Fixing Device for Clean Water Formwork" discloses a fixing device that can be used as a tie rod device with internal and external supports. The pull rod disclosed in the new model No. M390337 includes an inner rod, two locking parts, and two outer rods. Each of the two ends of the inner rod is screwed with a locking member. The outer ends of the two fasteners are each screwed to the inner end of an outer rod. The fastener can constitute the inner support of the formwork. When a gasket with a pressing plate function is provided at the outer end of the outer rod, the gasket will press the pressure strips of the formwork to form an external support for the formwork. When the concrete solidifies, the fastener can be easily detached from the concrete wall and reused.

Today, when raw materials are scarce and their prices are relatively high, the new patent No. M390337 has too many parts, resulting in increased manufacturing costs. In addition, the operation of this type of patented M390337 assembly on the template is relatively troublesome, which makes the staff feel inconvenient to operate. It is not an ideal product. In order to solve the problem of excessive production cost of patent No. M390337, the applicant It is the research and development of a new type of patent No. M628916 "Tie rod structure supported outside the formwork". See picture 1. The pull rod 10 of the pull rod device 1 disclosed in the new patent No. M628916 is provided with an inner blocking element 11 to serve as an inner support for the formwork 12 . When the tie rod device 1 is installed on the formwork 12, the inner blocking element 11 can lean against the tie rod 10 in an inclined manner to directly penetrate the preset holes 13 on the two templates 12 to complete the operation of erecting the tie rod device 1. It is quite convenient to operate. However, the inner blocking element 11 may sometimes sag too low, as shown in Figure 2, and lose its inner supporting function.

The main purpose of the present invention is to provide a tie rod device for the formwork, which mainly further improves the inner blocking element of the new patent No. M628916 to ensure that the inner blocking element can provide internal support for the formwork.

Another object of the present invention is to provide a tie rod device for a formwork, which can directly penetrate the preset holes on the formwork to easily and quickly complete the operation of erecting the tie rod device.

The present invention provides a pull rod device for a template, which includes: a pull rod and two inner blocking elements. The two ends of the pull rod are respectively equipped with an inner blocking element. The pull rod is provided with two stepped surfaces, and the two stepped surfaces can respectively produce stopping effects on the two inner blocking elements. The inner blocking element can be attached to the inner side wall of the formwork and serve as the inner support of the formwork. The inner blocking element is in the shape of a narrow and elongated ring, and its length is greater than the diameter of the hole preset on the template for the pull rod device to pass through.

The inner blocking element is provided with two first protruding portions and a second protruding portion with different heights and protruding toward the inside. The inner diameter width of the inner blocking element at the first protruding portion and the second protruding portion is smaller than the outer diameter of the pull rod where the inner blocking element is sleeved, so that the pulling rod is limited to the first and second protruding parts. Between the departments.

The inner baffle element can be made by bending a metal wire, or it can also be stamped and formed by a metal plate.

The pull rod device further includes two leak-proof sheets. A hole is provided in the center of the leakage-proof sheet for the inner blocking element to penetrate, and the leakage-proof sheet is positioned on the inner blocking component by virtue of the elasticity of the leakage-proof sheet. The leak-proof sheet can cover the perforations on the template for the tie rod device to penetrate.

1:Tie rod device (for habitual users)

2: Pull rod device (the present invention)

10:Tie rod

11:Inner stop element

12: Template

13:Perforation

20:Tie rod

21:Inside rod

22:Outside pole

23:Thread part

24:Step surface

30:Inner stop element

31: First protrusion

32: Second protrusion

33: The third protruding part

34:The fourth protrusion

35: First protrusion

36: Second protrusion

40: Template

41: Piercing

50:Inner stop element

51: First protrusion

52: Second protrusion

53: The third protruding part

54:The fourth protrusion

60: Leak-proof sheet

61:Perforation

Figure 1 shows the pull rod device disclosed in the new patent No. M628916.

Figure 2 is a usage status diagram of the habitual user shown in Figure 1.

Figure 3 is an appearance view of an embodiment of the present invention.

Figure 4 shows the appearance of the inner baffle component.

Figure 5 is a usage status diagram of the embodiment shown in Figure 3.

Figure 6 is an enlarged view of the A-A section in Figure 3. .

Figures 7 to 9 show examples of inner blocking elements made of metal wires.

Figures 10 to 13 show examples of inner blocking elements stamped from metal sheets.

Figure 14 shows the appearance of the leak-proof sheet inserted through the inner blocking element.

Figure 15 is a diagram of the inner blocking element shown in Figure 14 in use.

Figure 16 is an enlarged view of the B-B section of Figure 15.

Please refer to Picture 3~Picture 6. The pull rod device 2 of the template disclosed by the present invention includes: a pull rod 20 and two inner blocking elements 30 . The tie rod 20 includes: an inner rod 21 and two outer rods 22 . Both ends of the inner rod 21 can be screwed to the inner ends of the two outer rods 22 respectively to form a pull rod 20 . The two outer rods of the pull rod 20 are provided with threaded portions 23, and the inner blocking elements 30 are respectively placed inside the two threaded portions 23. Each thread portion 23 is provided with a step on its inner side. The stepped surfaces 24 can respectively exert a blocking effect on the inner blocking elements 30 . The inner blocking element 30 can abut against the inner side wall of the formwork 40 and serve as an inner support for the formwork 40 . The inner blocking element 30 is in the shape of a narrow and elongated ring. The length of the inner blocking element 30 is greater than the diameter of the hole 41 on the template 40 for the tie rod device 2 to pass through.

The length of the inner blocking element 30 is greater than the diameter of the through hole 41 on the template 40 for the tie rod device 2 to penetrate. When the tie rod device 2 passes through the through holes 41 of the two templates 40, the inner blocking element 30 can be tilted to form a state that is close to fitting with the outer rod 22. In this way, the tie rod device 2 can be penetrated through the through holes 41 of the two templates 40 at one time. The inner blocking element 30 can return to an upright shape after passing through the through hole 41 of the template 40 . Continue to place the formwork 40 against the inner blocking element 30 so that the inner blocking element 30 forms the inner support of the formwork 40 .

The inner blocking element 3o is provided with two first protruding portions 31 and second protruding portions 32 with different heights and protruding toward the inside. The inner diameter width of the inner blocking element 30 at the first protruding portion 31 and the second protruding portion 32 is smaller than the outer diameter of the pulling rod 21 where the inner blocking element 30 is sleeved, so that the pulling rod 21 is limited to between the first protruding portion 31 and the second protruding portion 32 . When the inner blocking element 30 blocks the inner surface of the template 40, its upper edge is higher than the upper edge of the through hole 41, and its lower edge is lower than the lower edge of the through hole 41, so that the inner blocking element 30 can truly function. The role of internal support. The first protruding portion 31 and the second protruding portion 32 are provided so as not to affect the inner blocking element 30 being able to pass through the through hole 41 of the template 40 in an inclined manner.

The inner blocking components 30 shown in Figures 7 to 9 are all made of metal wires. The inner blocking element 30 shown in Figure 7 is further provided with a third protruding portion 33. The third protruding part 33 is arranged left and right symmetrically with the first protruding part 31 or the second protruding part 32 . The inner blocking element 30 shown in Figure 8 is further provided with a third protruding portion 33 and a fourth protruding portion 34. The third protruding part 33 and the fourth protruding part 34 are arranged left and right symmetrically with the first protruding part 31 and the second protruding part 32 respectively. In the inner blocking element 30 shown in Figure 9, the two ends of the metal wire protrude toward the inside of the inner blocking element 30, forming the first protruding portion 35 and the second protruding portion 36 respectively.

The inner blocking components shown in Figures 10 to 13 are all examples made of metal wires. The inner blocking element 50 shown in Figure 10 is provided with two first protruding portions 51 and second protruding portions 52 with different heights and protruding toward the inside. The first protruding portion 51 and the second protruding portion 52 of the inner blocking element 50 shown in Figure 11 are respectively provided on both sides. The inner blocking element 50 shown in Figure 12 is further provided with a third protruding portion 53. The third protruding part 53 is arranged left and right symmetrically with the first protruding part 51 or the second protruding part 52 . The inner blocking element 50 shown in Figure 13 is further provided with a third protruding portion 53 and a fourth protruding portion 54. The third protruding part 53 and the fourth protruding part 54 are arranged left and right symmetrically with the first protruding part 51 and the second protruding part 52 respectively.

Figure 14 shows a further embodiment of the inner stop element 30. The tie rod device 2 further includes two flexible leak-proof sheets 60 . The two anti-leakage sheets 60 are used in conjunction with the two inner blocking components 30 respectively. The leakage-proof sheet 60 is provided with a through hole 61 in the center for the inner blocking element 30 to penetrate, and the leakage-proof sheet 60 is positioned on the inner blocking component 30 by virtue of the elasticity of the leakage-proof sheet 60 . Please refer to Figure 15 and Figure 16. When the template 40 is close to the inner blocking element 30 , the inner blocking element 30 can press a part of the leakage-proof sheet 60 between the template 40 and the inner blocking element 30 , so that the leakage-proof sheet 60 becomes upright. status. The leakage-proof sheet 60 can cover the perforations 41 on the formwork 40 for the tie rod device 2 to penetrate, thereby preventing grout leakage during grouting.

To sum up, the pull rod device of the formwork provided by the present invention uses the inner stop element to First protrusions 31, 35, 51 and second protrusions 32, 36, 52 with different heights are provided inside the components 30 and 50 to prevent the inner blocking element 30 from losing its internal support function during use. Furthermore, the present invention adds a leak-proof sheet 60 to prevent slurry from leaking, making the present invention more practical and a more ideal design.

2:Tie rod device

20:Tie rod

21:Inside rod

22:Outside pole

23:Thread part

24:Step surface

30:Inner stop element

31: First protrusion

32: Second protrusion

Claims (9)

A pull rod device for a template, which includes: a pull rod and two inner blocking elements; the two ends of the pull rod are provided with threaded parts, and one of the inner blocking elements is respectively set inside the two threaded parts; Each inner side of the screw thread portion is provided with a stepped surface, which can respectively produce a blocking effect on the inner blocking element; the inner blocking element can be attached to the inner side wall of the template as an internal support for the template; the inner blocking element It is a narrow and long ring shape; the length of the inner blocking element is greater than the hole diameter of the hole preset on the template for the pull rod device to pass through; it is characterized in that: the inner blocking element is provided with two different heights and protruding toward the inside. The first protruding portion and the second protruding portion; the inner diameter width of the inner blocking element at the first protruding portion and the second protruding portion is smaller than the outer diameter of the tie rod sleeved on the inner blocking element, so that The pull rod is constrained between the first protruding portion and the second protruding portion. The tie rod device of the formwork according to claim 1, wherein the inner blocking element is made of bent metal wire. The pull rod device of the formwork according to claim 2, wherein the inner blocking element further includes a third protruding portion protruding toward the inside; the third protruding portion and the first protruding portion are arranged in a left-right direction Symmetrical setup. The pull rod device of the formwork according to claim 3, wherein the inner blocking element further includes a fourth protruding portion protruding toward the inside; the fourth protruding portion and the second protruding portion are arranged in a left-right direction. Symmetrical setup. The pull rod device of the template according to claim 2, wherein the two ends of the metal wire protrude toward the inside of the inner blocking element to form the first protruding part and the second protruding part respectively. The pull rod device of the template as claimed in claim 1, wherein the inner blocking element is stamped and formed from a metal sheet. The pull rod device of the formwork according to claim 6, wherein the inner blocking element further includes a third protruding portion protruding toward the inside; the third protruding portion and the first protruding portion are arranged in a left-right direction Symmetrical setup. The pull rod device of the formwork according to claim 7, wherein the inner blocking element further includes a fourth protruding portion protruding toward the inside; the fourth protruding portion and the second protruding portion are arranged in a left-right direction. Symmetrical setup. The pull rod device of the formwork described in claim 1 further includes two flexible leak-proof sheets; a hole is provided in the center of the leak-proof sheet for the inner blocking element to penetrate, and by virtue of the leak-proof sheet The elasticity of the sheet allows the leakage-proof sheet to be positioned on the inner blocking element; the leakage-proof sheet can cover the perforations on the template for the tie rod device to penetrate.

Images