Adjustable sling fork ear anchorage device

Abstract

The utility model discloses an adjustable sling fork ear anchorage device which comprises a fork ear anchorage device, an ear plate and a cable body, one end of the fork ear anchorage device is connected with the ear plate, the fork ear anchorage device is provided with a through hole and a pin shaft, the pin shaft penetrates through the fork ear anchorage device through the through hole, the pin shaft is provided with a shaft sleeve, the pin shaft is connected with the fork ear anchorage device through the shaft sleeve, and the cable body is connected with the fork ear anchorage device through the shaft sleeve. And the lug plates are connected with the cable body. The shaft sleeve is arranged between the through hole and the pin shaft, the center of the shaft sleeve is not concentric with the center of the shaft sleeve, the thin and thick wall characteristic is formed, smooth transition of the thin and thick walls is achieved by rotating the shaft sleeve, and the purpose of stepless adjustment of the length of the cable body is achieved. The offset distance of the pin shaft hole in the shaft sleeve is determined according to the deviation value of the length of the measured cable body after cable manufacturing, the shaft sleeve is machined and manufactured, and the purpose of adjusting the length of the cable is achieved. The eccentric shaft sleeve type inhaul cable length fine adjustment device can achieve fine adjustment of the length of the inhaul cable and can be applied to an independent fork lug anchorage device and a split type fork lug anchorage device.

Description

Technical Field

[0001] The utility model belongs to the technical field of anchors, and in particular relates to an adjustable sling fork ear anchor. Background Art

[0002] The cables have fork ear structures at both ends, and the fork ear anchor cup adopts an integral structure. According to the conventional cable making process, there is a length error of ±10mm during cable making, which cannot meet the ±2mm requirement of the bridge design specifications.

[0003] The patent document with announcement number CN202031028U discloses a gasket-adjustable fork ear anchor, which cooperates with the pin by reserving a gap in the fork ear hole (forming a non-circular pin hole) and filling multiple gaskets in the gap to adjust the length of the cable. However, the method of filling gaskets can only adjust the cable length in a jump-like manner, and cannot achieve arbitrary adjustment within a certain length. The error of the cable is often around ±10mm. Filling multiple gaskets has high operational requirements and needs to be fully fitted in place to make the pin force even.

[0004] The patent document with announcement number CN209398791U discloses a fine-tuning closed cable. In the patent, the adjustment sleeve is processed according to the length error after the measured cable length is determined by tensioning, so that the deviation between the actual manufactured cable length and the required cable length is controlled to not exceed 1 / 4 of the pitch, and the consistency of the opening direction of the anchors at both ends is ensured. After the adjustment sleeve adjusts the cable length, the cable length control deviation does not exceed 1 / 4 of the pitch, and the pitch is the pitch of the special cast anchor or the pitch of the external rotation anchor with the adjustable end fork ear. The pitch of the special cast anchor and the external rotation anchor with the adjustable end fork ear is 6mm or 8mm. For every 180° rotation of the external rotation anchor with the adjustable end fork ear, the cable length is adjusted by 3 or 4mm. The adjustment method and structure of the adjustment sleeve are different from those of the present application, and the technical content of stepless adjustment is not disclosed. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an adjustable sling fork ear anchor.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides an adjustable sling fork ear anchor, comprising a fork ear anchor, an ear plate and a rope body, wherein one end of the fork ear anchor is connected to the ear plate, a through hole and a pin are arranged on the fork ear anchor, the pin passes through the fork ear anchor through the through hole, a shaft sleeve is arranged on the pin, the pin is connected to the fork ear anchor through the shaft sleeve, and the ear plate is connected to the rope body.

[0008] Preferably, a protective sleeve is provided on the ear plate, and the cable body passes through the protective sleeve for connection. The protective sleeve includes a connecting portion, a fixing portion A, and a fixing portion B. One end of the connecting portion is connected to the ear plate, the inner wall of the other end of the connecting portion is connected to the fixing portion A, and the outer wall of the other end of the connecting portion is connected to the fixing portion B.

[0009] Preferably, the fixing portion A includes fixing member A, fixing member B, fixing member C, and fixing member D. The fixing member A is respectively connected to the connecting portion, the fixing portion B, the fixing member B, the fixing member C, and the fixing member D. The fixing member B is respectively connected to the fixing member A, the fixing member C, the connecting portion, and the cable body. The fixing member C is respectively connected to the fixing member A, the fixing member B, and the cable body. The fixing member D is respectively connected to the fixing member A, the fixing portion B, and the cable body.

[0010] Preferably, end caps and screw holes are provided at both ends of the pin shaft. Bolts and holes are provided on the end caps. After the bolts pass through the holes, they are threadedly connected to the screw holes.

[0011] Preferably, the bushing and the pin hole on the bushing are arranged non-coaxially, and the deviation value between the axis of the pin hole and the axis of the bushing is greater than 1 mm. The pin shaft passes through the pin hole and is connected to the bushing.

[0012] Preferably, the end cap is circular, and two holes are symmetrically arranged.

[0013] Preferably, the cable body is connected to the ear plate through an anchor cup.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. A bushing is provided between the through hole and the pin shaft of the present utility model. The bushing is in a form where the pin hole and the center of the bushing are non-concentric, forming a thin and thick wall feature. By rotating the bushing, a smooth transition of the thin and thick walls is achieved, and the purpose of steplessly adjusting the length of the cable body is achieved.

[0016] 2. According to the deviation of the cable body length measured after cable production, the offset distance of the pin hole in the bushing is determined based on the cable length deviation value, and the bushing is processed and manufactured to achieve the purpose of adjusting the cable length.

[0017] 3. The setting of the eccentric bushing type for fine-tuning the length of the stay cable in the present utility model can be applied to single fork ears and split fork ear anchors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of area A of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the fork ear anchor of the present utility model;

[0021] Figure 4 is a schematic structural view of the pin shaft of the present utility model;

[0022] Figure 5 is a schematic structural view of the bushing of the present utility model;

[0023] Figure 6 is a schematic structural view of the end cover of the present utility model;

[0024] In the figure: 1 - fork ear anchor, 11 - through hole, 2 - ear plate, 3 - cable body, 4 - pin shaft, 41 - screw hole, 5 - bushing, 51 - pin shaft hole, 6 - protective sleeve, 61 - connecting part, 62 - fixing part A, 621 - fixing piece A, 622 - fixing piece B, 623 - fixing piece C, 624 - fixing piece D, 63 - fixing part B, 7 - end cover, 71 - hole, 8 - bolt pair, 9 - anchor cup. Specific embodiments

[0025] The technical solution of the present utility model will be further described below, but the scope of protection is not limited thereto.

[0026] Embodiment:

[0027] As Figures 1 to 6 shown, an adjustable sling fork ear anchor includes a fork ear anchor 1, an ear plate 2 and a cable body 3. One end of the fork ear anchor 1 is connected to the ear plate 2. A through hole 11 and a pin shaft 4 are provided on the fork ear anchor 1. The pin shaft 4 passes through the fork ear anchor 1 through the through hole 11. A bushing 5 is provided on the pin shaft 4. The through hole 11 and the bushing 5 are in clearance fit. The pin shaft 4 is connected to the fork ear anchor 1 through the bushing 5. The ear plate 2 is connected to the cable body 3.

[0028] A protective sleeve 6 is provided on the ear plate 2. The cable body 3 passes through and is connected to the protective sleeve 6. The protective sleeve 6 plays a role in protecting the connecting part of the cable body 3. The protective sleeve 6 includes a connecting part 61, a fixing part A 62 and a fixing part B 63. One end of the connecting part 61 is connected to the ear plate 2. The inner wall of the other end of the connecting part 61 is connected to the fixing part A 62. The outer wall of the other end of the connecting part 61 is connected to the fixing part B 63.

[0029] The fixing part A62 includes a fixing piece A621, a fixing piece B622, a fixing piece C623 and a fixing piece D624. The fixing piece A621 is respectively connected to the connecting part 61, the fixing part B63, the fixing piece B622, the fixing piece C623 and the fixing piece D624. The fixing piece A621 prevents the connecting part 61 and the fixing part B63 from generating displacement in the extending direction of the cable body 3, and at the same time clamps the fixing piece B622, the fixing piece C623 and the fixing piece D624. The fixing piece B622 is respectively connected to the fixing piece A621, the fixing piece C623, the connecting part 61 and the cable body 3. The fixing piece B622 and the fixing piece D624 prevent the fixing piece A621 and the fixing piece B622 from generating displacement in the extending direction of the cable body 3, and at the same time clamp the cable body 3. The fixing piece C623 is respectively connected to the fixing piece A621, the fixing piece B622 and the cable body 3. The fixing piece C623 is used to clamp the cable body 3. The fixing piece D624 is respectively connected to the fixing piece A621, the fixing part B63 and the cable body 3.

[0030] Both ends of the pin shaft 4 are provided with end caps 7 and screw holes 41. The end caps 7 are provided with bolt pairs 8 and holes 71. The end caps 7 can protect the pin shaft 4 and the bushing 5, and at the same time prevent the pin shaft 4 and the bushing 5 from falling off. The bolt pairs 8 pass through the holes 71 and are threadedly connected to the screw holes 41 to fix the end caps 7.

[0031] The bushing 5 is arranged non - coaxially with the pin shaft hole 51 on the bushing 5, and the deviation value between the axis of the pin shaft hole 51 and the axis of the bushing 5 is greater than 1 mm, preferably the deviation value is ±10 mm. The pin shaft 4 passes through the pin shaft hole 51 to be connected to the bushing 5. The position of the pin shaft hole 51 is precisely machined according to the deviation value in the axial position of the center line of the through - hole 11 after the cable body 3 is prepared. This setting can achieve the purpose of adjusting the cable length of the cable body 3 by rotating the bushing 5 to eliminate the length error generated during production.

[0032] The end cap 7 is circular, and two holes 71 are symmetrically arranged, which is convenient for the bolt pair 8 to stabilize the end cap 7.

[0033] The cable body 3 is connected to the ear plate 2 through the anchor cup 9.

[0034] The preparation method of this application includes:

[0035] Method 1:

[0036] (1) Process the eccentric bushing 5, reserving an adjustment range of ±10 mm (the pin shaft hole 51 of the eccentric bushing 5 is pre - offset by 10 mm);

[0037] (2) After manufacturing the cable body 3, measure the length between the two anchor points of the cable body 3, compare and monitor the length, and obtain the cable length deviation value of the cable body 3;

[0038] (3) According to the measured cable length deviation value, rotate the eccentric bushing 5 for stepless adjustment to compensate for the length of the cable body 3;

[0039] (4) After the final fixed length, tighten the end caps 7 on both sides of the pin shaft 4 with the bolt pair 8 to position the pin shaft 4 and the eccentric bushing 5 to prevent slipping, and complete the cable making.

[0040] Method 2:

[0041] (1) After making the cable body 3, measure the length between the two end anchor points, compare with the monitored length, and obtain the cable length deviation value;

[0042] (2) According to the actual cable length deviation value, machine the eccentric bushing 5 (the eccentric distance of the pin hole 51 of the eccentric bushing 5 = the cable length deviation value);

[0043] (3) Insert the eccentric bushing 5 into the through hole 11 and then insert the pin shaft 4. Tighten the end caps 7 on both sides of the pin shaft 4 with the bolt pair 8 to position the pin shaft 4 and the eccentric bushing 5 to prevent slipping, and complete the cable making.

Claims

1. An adjustable sling fork ear anchor, characterized in that: The invention comprises a fork ear anchor (1), an ear plate (2) and a cable body (3); one end of the fork ear anchor (1) is connected to the ear plate (2); a through hole (11) and a pin (4) are arranged on the fork ear anchor (1); the pin (4) passes through the fork ear anchor (1) through the through hole (11); a shaft sleeve (5) is arranged on the pin (4); the pin (4) is connected to the fork ear anchor (1) through the shaft sleeve (5); and the ear plate (2) is connected to the cable body (3).

2. An adjustable sling fork ear anchor as claimed in claim 1, characterized in that: A protective cover (6) is arranged on the ear plate (2), and the cable body (3) passes through the protective cover (6) for connection. The protective cover (6) comprises a connecting portion (61), a fixing portion A (62) and a fixing portion B (63). One end of the connecting portion (61) is connected to the ear plate (2), the inner wall of the other end of the connecting portion (61) is connected to the fixing portion A (62), and the outer wall of the other end of the connecting portion (61) is connected to the fixing portion B (63).

3. An adjustable sling fork ear anchor as claimed in claim 2, characterized in that: The fixing part A (62) comprises a fixing member A (621), a fixing member B (622), a fixing member C (623) and a fixing member D (624); the fixing member A (621) is respectively connected to the connecting part (61), the fixing part B (63), the fixing member B (622), the fixing member C (623) and the fixing member D (624); the fixing member B (622) is respectively connected to the fixing member A (621), the fixing member C (623), the connecting part (61) and the cable body (3); the fixing member C (623) is respectively connected to the fixing member A (621), the fixing member B (622) and the cable body (3); and the fixing member D (624) is respectively connected to the fixing member A (621), the fixing part B (63) and the cable body (3).

4. The adjustable sling fork ear anchor as claimed in claim 1, characterized in that: End covers (7) and screw holes (41) are arranged at both ends of the pin shaft (4); a bolt pair (8) and a hole (71) are arranged on the end cover (7); the bolt pair (8) passes through the hole (71) and is threadedly connected with the screw hole (41).

5. The adjustable sling fork ear anchor as claimed in claim 1, characterized in that: The shaft sleeve (5) and the pin hole (51) on the shaft sleeve (5) are non-coaxially arranged, and the axis deviation value between the axis of the pin hole (51) and the axis of the shaft sleeve (5) is greater than 1 mm. The pin (4) passes through the pin hole (51) and is connected to the shaft sleeve (5).

6. An adjustable sling fork ear anchor as claimed in claim 4, characterized in that: The end cover (7) is circular, and two holes (71) are symmetrically arranged.

7. The adjustable sling fork ear anchor as claimed in claim 1, characterized in that: The cable body (3) is connected to the ear plate (2) via an anchor cup (9).

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