Assembly type pin shaft

Abstract

The utility model relates to an assembly type pin shaft which comprises three pin shaft standard parts, and a screw hole is formed in the rear end of the first standard part. A stud matched with the screw hole is arranged at the front end of the second standard component; the front end of the third standard component is also provided with the stud, and the rear end of the third standard component is also provided with the screw hole; a plurality of fixing holes are formed in the rear portions of the screw holes in the first pin shaft standard part, the second pin shaft standard part and the third pin shaft standard part in the circumferential direction, and the fixing holes are used for inserting long bars into the fixing holes, fixing the long bars on the pin shaft standard part, rotating the long bars on another pin shaft standard part assembled with the pin shaft standard part with the pin shaft standard part as a shaft, and finally tightening the long bars to complete installation. The assembly type pin shaft accessory is produced in a standardized mode, and the design difficulty is lowered; the problem of limitation of construction height can be solved through assembly type pin shaft segmented installation, and the construction difficulty is reduced. The problem that the space above a pin shaft node is limited and is not enough to install a pin shaft can be solved.

Description

Technical Field

[0001] The utility model relates to a pin system, in particular to an assembled pin for a beam string, and belongs to the technical field of civil engineering. Background Art

[0002] Beam string structures are currently widely used in deep foundation pit projects. Steel tie rods and steel struts, as key load-bearing components of the beam string structure, are typically connected by pins. In foundation pit projects, the steel tie rods and struts are often assembled separately on-site before being hoisted into position. They are then joined using pre-set lug joints at each end and secured by inserting pins.

[0003] However, due to the limitation of construction height, it is difficult to insert the traditional pin shaft smoothly, and special treatment must be made on site, which greatly increases the difficulty of construction and makes it difficult to ensure construction quality. Summary of the Invention

[0004] The purpose of the utility model is to provide an assembled pin for a beam string, which divides a traditional pin into several standard parts. During on-site construction, the standard parts are respectively inserted into the ear plate joint holes and assembled into an integral pin, which can avoid the limitation of construction height and reduce the difficulty of construction.

[0005] The utility model adopts the following technical solutions:

[0006] An assembled pin shaft comprises three standard pin shaft parts, wherein the rear end of the first standard part has a screw hole; the front end of the second standard part is provided with a stud matching the screw hole; the front end of the third standard part is also provided with the stud, and the rear end is also provided with the screw hole; a plurality of fixing holes are circumferentially arranged at the rear of the screw holes on the first, second and third standard pin shaft parts, and the function of the fixing holes is to insert a long rod therein to fix the long rod on the standard pin shaft part, and to rotate the long rod on another standard pin shaft part assembled with it with the standard pin shaft part as the axis, and finally tighten to complete the installation.

[0007] Preferably, the fixing holes are evenly distributed at equal angles along the circumference.

[0008] Furthermore, the fixing hole is a blind hole, and the depth is smaller than the wall thickness of the screw hole.

[0009] Preferably, the front end of the first standard component is a closed structure.

[0010] Furthermore, the rear end of the second standard component is a closed structure, and the end has an outer diameter enlarged portion.

[0011] Preferably, the first, second and third standard parts are all cylindrical and have the same outer diameter.

[0012] Preferably, it is installed at the hinge of adjacent steel tie rods 3 of the beam string.

[0013] Furthermore, the hinge has an ear plate, and the assembled pin passes through the ear plate.

[0014] The beneficial effects of the present invention are:

[0015] 1) Standardized production of assembled pin shaft accessories reduces design difficulty;

[0016] 2) The segmented installation of assembled pins can solve the problem of construction height limitations and reduce construction difficulty.

[0017] 3) It can solve the problem that the space above the pin node is limited and insufficient to install the pin.

[0018] 4) The assembled pin shaft has its own fixing hole, which can be easily rotated by inserting a long rod to complete the installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an axial cross-sectional view of the assembled pin shaft of the utility model.

[0020] Figure 2 is a schematic diagram of the first standard component.

[0021] Figure 3 is a schematic diagram of the second standard.

[0022] Figure 4 It is a schematic diagram of the third standard component.

[0023] Figure 5 This is a diagram of installation step one.

[0024] Figure 6 This is a diagram of the second step of installation.

[0025] Figure 7 This is a diagram of installation step three.

[0026] Figure 8 This is a diagram of installation step four.

[0027] Figure 9 This is a diagram of installation step five.

[0028] Figure 10 This is a schematic diagram of specification one of the assembled pin shaft.

[0029] Figure 11 This is a schematic diagram of the second specification of the assembled pin.

[0030] Figure 12 This is a schematic diagram of the third specification of the assembled pin.

[0031] In the picture, 1. Fixing hole, 2. Long rod, 3. Steel pull rod. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] See also Figure 1-4 , an assembled pin shaft, including three pin shaft standard parts, wherein the rear end of the first standard part has a screw hole; the front end of the second standard part is provided with a stud matching the screw hole; the front end of the third standard part is also provided with the stud, and the rear end is also provided with the screw hole; the rear part of the screw holes on the first, second and third pin shaft standard parts are circumferentially provided with a plurality of fixing holes, the function of the fixing holes is to insert a long rod into them to fix the long rod on the pin shaft standard part, and use the pin shaft standard part as the axis to rotate the long rod on the other pin shaft standard part assembled with it, and finally tighten it to complete the installation.

[0034] The function of the fixing hole is to make installation more convenient. Insert the long rod into the fixing hole, fix the long rod on one of the standard parts, and use the standard part as the axis to rotate the long rod on the other standard part, and finally tighten it to complete the installation.

[0035] In this embodiment, see Figure 2-4 The fixing holes are evenly distributed at equal angles along the circumference.

[0036] In this embodiment, see Figure 1 The fixing hole is a blind hole, and its depth is less than the wall thickness of the screw hole.

[0037] In this embodiment, see Figure 2 , the front end (lower part) of the first standard part is a closed structure.

[0038] In this embodiment, see Figure 3 The rear end (upper part) of the second standard part is a closed structure, and the end has an outer diameter expansion portion.

[0039] In this embodiment, see Figure 10-12 , the first, second and third standard parts are all cylindrical and have the same outer diameter.

[0040] In this embodiment, see Figure 5-9 , installed at the hinge of the adjacent steel tie rods 3 of the tension string beam.

[0041] In this embodiment, see Figure 5-9 The hinge has an ear plate, and the assembled pin passes through the ear plate. The ear plate is not shown in the accompanying drawings.

[0042] The assembled pin shaft of the utility model can be mainly used in the case where the space above the pin shaft node is limited.

[0043] Installation step 1: See Figure 5, After assembling the ear plate, put the first standard part in first and fix it with the long rod 2;

[0044] Installation Step 2: Then refer to Figure 6 , put in the third standard part, and insert the long rod 2 and rotate it around the standard part to tighten it.

[0045] Installation Step 3: See Figure 7 , remove the long rod of the first standard part, lower and fix the long rod of the third standard part at the same time;

[0046] Installation Step 4: See Figure 8 , finally put in the second standard part, insert the long rod and rotate it around the standard part to tighten it, and remove the long rod of standard part 3;

[0047] Installation step five: Lower and remove the long rod of standard part 2, continue to lower and fix it to complete the installation.

[0048] The assembled pins are made of first and second standard parts and several third standard parts according to the number of steel tie rods and steel struts, and should include at least one first standard part and one second standard part to form assembled pins of different specifications, for example:

[0049] Attachment Figure 10 Shows the schematic diagram of the assembled pin specification one; Figure 11 Shows the schematic diagram of the second specification of the assembled pin; Figure 12 Shows the schematic diagram of the assembled pin specification three, with Figure 12 The number of third standard parts can be further increased as needed.

[0050] The assembled pin shaft accessories of the utility model are produced in a standardized manner, which reduces the difficulty of design; the segmented installation of the assembled pin shaft can solve the problem of construction height limitation and reduce the difficulty of construction; it can solve the problem of limited space above the pin shaft node and insufficient space for installing the pin shaft; the assembled pin shaft has its own fixing hole, and the rotation action can be conveniently implemented by inserting a long rod to complete the installation.

[0051] The above are preferred embodiments of the present invention. Ordinary technicians in this field can also make their own changes or improvements on this basis. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.

Claims

1. An assembled pin, characterized in that: The invention comprises three kinds of standard pin shaft parts, wherein the first standard part has a screw hole at the rear end; the second standard part has a stud matching the screw hole at the front end; the third standard part also has the stud at the front end and the screw hole at the rear end; A plurality of fixing holes are arranged circumferentially at the rear of the screw holes on the first, second and third pin shaft standard parts. The function of the fixing holes is to insert long rods therein. Fix the long rod on the pin shaft standard part, and use the pin shaft standard part as the axis to rotate the long rod on the other pin shaft standard part to be assembled with it, and finally tighten it to complete the installation.

2. The assembled pin according to claim 1, wherein: The fixing holes are evenly distributed at equal angles along the circumference.

3. The assembled pin according to claim 2, wherein: The fixing hole is a blind hole, and the depth of the fixing hole is less than the thickness of the hole wall of the screw hole.

4. The assembled pin according to claim 1, wherein: The front end of the first standard component is a closed structure.

5. The assembled pin according to claim 4, characterized in that: The rear end of the second standard component is a closed structure, and the end has an outer diameter enlarged portion.

6. The assembled pin according to claim 1, wherein: The first, second and third standard parts are all cylindrical and have the same outer diameter.

7. The assembled pin according to claim 1, wherein: It is installed at the hinge of the adjacent steel tie rods (3) of the tension beam.

8. The assembled pin according to claim 7, wherein: The hinge is provided with an ear plate, and the assembled pin passes through the ear plate.

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