A connecting structure for a steel formwork for shaping a pier body

Abstract

The utility model discloses a connecting structure for pier body shaping steel form, and fastening mechanism includes second screw rod, two second screw rods are arranged in all, and two second screw rod surface threads are identical to each other, and the end of each second screw rod is fixedly installed with the installing rod, and second screw rod and installing rod are integrally formed, and the outside of each second screw rod is movably installed with the secondary nut, and the top surface middle part of secondary nut is provided with second thread hole, and the inside of secondary nut and below second thread hole are provided with the openwork, and the bottom surface edge of secondary nut is adhesively fixed with second washer, and second screw rod is connected with second thread hole, when the nut is loose and rotates due to vibration, then through the surface friction force drives the secondary nut and rotates in the same direction, but because the screw thread of the screw rod of supporting both is opposite, when the secondary nut is pushed and rotates, instead will move towards the direction of the hill-shaped nut, and then interlocking is formed between the secondary nut and the hill-shaped nut, and the influence of vibration on the loosening of the hill-shaped nut is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a connection structure for pier body fixed steel formwork. Background Technology

[0002] When tie bolts are used for connecting the fixed steel formwork of the pier body, they mainly consist of bolt body, nut, washer and PVC sleeve. The bolt passes through the formwork joint, and the preload is adjusted by the nuts at both ends to fix the formwork. The washer disperses the pressure and prevents grout leakage. The sleeve protects the bolt and is easy to recycle. With the help of auxiliary components such as mountain-shaped clamps, the stability is enhanced, ensuring that the formwork does not deform or leak grout during concrete pouring, and ensuring the accuracy of the pier body structure dimensions.

[0003] Chinese patent discloses a tie bolt reinforcement device (publication number: CN208870400U). This device features a novel design with a ring-shaped groove along the edge of the end face of the conical head facing the U-shaped clamp; a rubber washer is provided within the groove. This design avoids wear at the point of direct contact between the conical head and the U-shaped clamp, preventing component wear. However, this structure still has the following problems:

[0004] When pouring concrete inside the pier's fixed steel formwork, the tie bolts are prone to loosening due to mechanical vibration. After the nuts loosen, the sealing of the formwork joints decreases, and the lateral pressure of the concrete may cause the formwork to bulge. To address this issue, a connection structure for the pier's fixed steel formwork is proposed to improve this problem. Utility Model Content

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A connection structure for pier body fixed steel formwork includes a tie bolt body, and fastening mechanisms are provided at both ends of the tie bolt body;

[0007] The fastening mechanism includes a second screw, two of which are provided, and the threads on the surfaces of the two second screws face the same direction. An installation rod is fixedly installed at the end of each second screw, and the second screw and the installation rod are integrally formed.

[0008] Each of the second screws has a secondary nut movably mounted on its outer side. The secondary nut has a second threaded hole in the center of its top surface. The secondary nut has a hollowed-out part inside and below the second threaded hole. A second washer is glued and fixed to the bottom edge of the secondary nut. The second screw is connected to the second threaded hole.

[0009] As a further embodiment of this utility model: the main body of the tie bolt includes a first screw rod, and each of the two ends of the first screw rod is provided with an installation groove, and each of the installation grooves is consistent with the first screw rod in the length direction.

[0010] As a further embodiment of this utility model: a bevel is provided on the surface of the first screw and on the outer side of each mounting groove, and the inner diameter of the bevel gradually decreases towards the middle of the first screw.

[0011] As a further embodiment of this utility model: both sides of the outer wall of the first screw are fitted with mountain-shaped clips, the side of the mountain-shaped clip away from the middle of the first screw abuts against a first washer, and the side of the first washer away from the mountain-shaped clip abuts against a mountain-shaped nut.

[0012] As a further embodiment of this utility model: a first threaded hole is provided in the middle of the inner wall of each of the two mountain-shaped nuts, the inner threads of the two first threaded holes face the same direction, and the inner sides of the two first threaded holes are connected to the surface of the first screw.

[0013] As a further embodiment of this utility model: the inner sides of the two mounting grooves are respectively inserted into the mounting rod, and the first screw is fixed to the mounting groove by welding through a bevel, and the mountain-shaped nut is located on the side away from the first washer and abuts against the second washer.

[0014] As a further embodiment of this utility model: the first screw and the two second screws are all kept on the same straight line, and the surface threads of the first screw and the second screws are oriented in opposite directions.

[0015] The beneficial effects of this utility model are as follows: This utility model supports the mountain-shaped clip and the mountain-shaped nut through the first screw, and the first screw passes through the template joint. The preload at both ends is adjusted by the mountain-shaped nuts and the template is fixed by the mountain-shaped clip. The two sides of the first screw are respectively provided with second screws with opposite threads. The outer threads of the second screws are installed with auxiliary nuts. The end face of the auxiliary nut abuts against the surface of the mountain-shaped nut. When the mountain-shaped nut loosens and rotates due to vibration, the auxiliary nut will rotate in the same direction through surface friction. However, since the threads of the screws supporting the two are opposite, when the auxiliary nut is pushed to rotate, it will move towards the mountain-shaped nut. Thus, the auxiliary nut and the mountain-shaped nut are interlocked, reducing the impact of vibration on the loosening of the mountain-shaped nut. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the first screw in this utility model;

[0019] Figure 3 This is an exploded view of the main structure of the tie bolt in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure below the secondary nut in this utility model.

[0021] In the diagram: 1. Main body of the tie bolt; 101. First screw; 102. Mounting groove; 103. Bevel; 104. V-shaped clip; 105. First washer; 106. V-shaped nut; 107. First threaded hole; 2. Fastening mechanism; 201. Second screw; 202. Mounting rod; 203. Secondary nut; 204. Second threaded hole; 205. Second washer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, a connection structure for a pier-shaped steel formwork includes a tie bolt body 1, with fastening mechanisms 2 at both ends of the tie bolt body 1. The fastening mechanism 2 includes two second screws 201, with the threads on both screws 201 facing the same direction. An installation rod 202 is fixedly installed at the end of each second screw 201, and the second screw 201 and the installation rod 202 are integrally formed. A secondary nut 203 is movably installed on the outer side of each second screw 201. A second threaded hole 204 is formed in the center of the top surface of the secondary nut 203. A hollow section is formed inside the secondary nut 203 below the second threaded hole 204. A second washer 205 is bonded and fixed to the bottom edge of the secondary nut 203. The second screw 201 is connected to the second threaded hole 204. Figure 4 As shown, the secondary nut 203 has a hollow interior, which facilitates the movement of the secondary nut 203 to the outside of the first screw 101;

[0024] The tie bolt body 1 includes a first screw 101, and mounting grooves 102 are provided at the middle of both ends of the first screw 101. Each mounting groove 102 is aligned with the first screw 101 in the length direction. Figure 1 As shown, the diameter of the first screw 101 is generally M16 to M24, and the length is determined according to the thickness of the pier body and the width of the template joint.

[0025] A bevel 103 is formed on the surface of the first screw 101 and on the outer side of each mounting groove 102. The inner diameter of the bevel 103 gradually decreases towards the middle of the first screw 101. A U-shaped clip 104 is fitted onto both sides of the outer wall of the first screw 101. The side of the U-shaped clip 104 away from the middle of the first screw 101 abuts against a first washer 105. The side of the first washer 105 away from the U-shaped clip 104 abuts against a U-shaped nut 106. Figure 1 As shown, the mountain-shaped nut 106 is matched with the first screw 101, such as an M16 bolt with an M16 nut;

[0026] The inner walls of the two mountain-shaped nuts 106 are each provided with a first threaded hole 107. The inner threads of the two first threaded holes 107 face the same direction, and the inner sides of the two first threaded holes 107 are connected to the surface of the first screw 101.

[0027] The inner sides of the two mounting slots 102 are respectively inserted into the mounting rods 202, and the first screw 101 is welded and fixed to the mounting slots 102 through the bevel 103. The mountain-shaped nut 106 is located on the side away from the first washer 105 and abuts against the second washer 205. Figure 3 , Figure 4 As shown, the washer structure can be made of rubber or plastic.

[0028] The first screw 101 and the two second screws 201 are all aligned in a straight line, and the surface threads of the first screw 101 and the second screws 201 face opposite directions, such as... Figure 2 As shown, the diameter of the first screw 101 is smaller than the diameter of the second screw 201.

[0029] The working principle of this utility model:

[0030] When the device is in use, the first screw 101 is fitted with a PVC sleeve in the middle. Then the first screw passes through the template joint. The preload is adjusted at both ends by the mountain-shaped nut 106. The template is fixed by pushing the mountain-shaped clip 104. After the first screw 101 is fixed relative to the template, the two mounting rods 202 can be inserted into the mounting groove 102 respectively. Then, the mounting rods 202 are welded into the mounting groove 102 through the bevel 103. Then the second screw 201 is kept relatively fixed with the first screw 101. Finally, the auxiliary nut 203 is threaded on the outside of the second screw 201 until the auxiliary nut 203 abuts against the surface of the mountain-shaped nut 106 through the second washer 205.

[0031] Secondly, when the first screw 101 vibrates due to the pouring of concrete in the template, the mountain-shaped nut 106 rotates and moves away from the mountain-shaped clip 104 along the length of the first screw 101. The mountain-shaped nut 106 then drives the secondary nut 203 to rotate in the same direction through the friction with the second washer 205. However, the second screw 201 supporting the secondary nut 203 has threads facing opposite directions to the first screw 101 on its surface. Therefore, the secondary nut 203 moves towards the mountain-shaped nut 106, thereby preventing the mountain-shaped nut 106 from moving away from the mountain-shaped clip 104.

[0032] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A connection structure for a fixed steel formwork for a pier body, comprising a tie bolt body (1), wherein fastening mechanisms (2) are provided at both ends of the tie bolt body (1); Its features are, The fastening mechanism (2) includes a second screw (201), two second screws (201) are provided, and the threads on the surfaces of the two second screws (201) are oriented in the same direction. An installation rod (202) is fixedly installed at the end of each second screw (201), and the second screw (201) and the installation rod (202) are integrally formed. Each of the second screws (201) has a secondary nut (203) movably mounted on its outer side. The secondary nut (203) has a second threaded hole (204) in the middle of its top surface. The secondary nut (203) has a hollowed-out part inside and below the second threaded hole (204). The second washer (205) is glued and fixed to the bottom edge of the secondary nut (203). The second screw (201) is connected to the second threaded hole (204).

2. The connection structure for pier body fixed steel formwork according to claim 1, characterized in that, The main body (1) of the tie bolt includes a first screw (101), and each of the two ends of the first screw (101) is provided with a mounting groove (102), and each mounting groove (102) is consistent with the first screw (101) in the length direction.

3. The connection structure for pier body fixed steel formwork according to claim 2, characterized in that, The first screw (101) has a bevel (103) on its surface and on the outside of each mounting groove (102), and the inner diameter of the bevel (103) gradually decreases toward the middle of the first screw (101).

4. The connection structure for pier body fixed steel formwork according to claim 3, characterized in that, Both sides of the outer wall of the first screw (101) are fitted with mountain-shaped clips (104). The side of the mountain-shaped clip (104) away from the middle of the first screw (101) abuts against the first washer (105). The side of the first washer (105) away from the mountain-shaped clip (104) abuts against the mountain-shaped nut (106).

5. A connection structure for pier body fixed steel formwork according to claim 4, characterized in that, The inner wall of each of the two mountain-shaped nuts (106) is provided with a first threaded hole (107). The inner threads of the two first threaded holes (107) are oriented in the same direction, and the inner sides of the two first threaded holes (107) are connected to the surface of the first screw (101).

6. The connection structure for pier body fixed steel formwork according to claim 5, characterized in that, The two mounting slots (102) are respectively inserted into the mounting rod (202), and the first screw (101) is welded to the mounting slot (102) through the bevel (103). The mountain nut (106) is located on the side away from the first washer (105) and abuts against the second washer (205).

7. A connection structure for pier body fixed steel formwork according to claim 6, characterized in that, The first screw (101) and the two second screws (201) are all on the same straight line, and the surface threads of the first screw (101) and the second screws (201) are oriented in opposite directions.

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