CN217733755U - Fork ear type adjustable anchor with tensioning supporting structure for inhaul cable - Google Patents
Fork ear type adjustable anchor with tensioning supporting structure for inhaul cable Download PDFInfo
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- CN217733755U CN217733755U CN202220731867.4U CN202220731867U CN217733755U CN 217733755 U CN217733755 U CN 217733755U CN 202220731867 U CN202220731867 U CN 202220731867U CN 217733755 U CN217733755 U CN 217733755U
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Abstract
The utility model relates to a take tensioning bearing structure's adjustable ground tackle of fork ear formula for cable belongs to bridge cable installation technical field. The fork ear type adjustable anchorage device is arranged at the bottom end of the inhaul cable and is fixed on one engineering structure, a fixed end anchorage device is arranged at the top end of the inhaul cable, and the fixed end anchorage device is fixed on the other engineering structure; a tensioning device is arranged on the fork ear type adjustable anchorage device; the fork ear type adjustable anchorage device comprises a connecting fork ear and an anchor cup, wherein a tensioning supporting step is arranged on the connecting fork ear, an adjusting rod is arranged between the connecting fork ear and the anchor cup, and one end of the adjusting rod is connected with the connecting fork ear through a sleeve; the bottom of the anchor cup is provided with a connecting sleeve, the other end of the adjusting rod is arranged in the connecting sleeve, and a space is reserved between the bottom end of the anchor cup and the other end of the adjusting rod. The fork ear type adjustable anchor is provided with a supporting structure used for tensioning construction, and the guy cable is tensioned to facilitate replacement.
Description
Technical Field
The utility model relates to a take tensioning bearing structure's adjustable ground tackle of fork ear formula for cable belongs to bridge cable installation technical field.
Background
At present, guy cables made of materials such as steel wires or steel strands are widely used in bridge and building structural engineering, and the conventional way for anchoring the guy cables to the structure is an anchor head bearing type, i.e. the anchor head usually has external threads and is anchored to the structures at both ends through an external nut bearing (for bridge guy cables, the structures at both ends are generally fixed end engineering structures and adjusting end engineering structures). The rear end of the cable anchor head is provided with an internal thread, and when the tensioning cable is installed, the internal thread at the rear end of the anchor device and a machine tool such as a jack can be connected through the tensioning screw rod to tension and bear the force of the cable.
In engineering, in order to meet the requirements of structural stress design, waterproof protection and the like, two ends of the inhaul cable can be anchored in a pin joint mode, namely, one end or two ends of the inhaul cable are anchored in a fork ear type anchorage device and connected into an ear plate pin hole of a structural object through a pin shaft. Therefore, when the guy cable adopts a fork ear type anchor, the guy cable cannot be tensioned in a conventional mode, if tensioning construction is required, the fork ear type anchor is generally designed into an adjustable structure, a structure for tensioning and connecting the guy cable is reserved or additionally arranged on a structure, a tensioning connecting hole is additionally arranged on an ear plate of the structure as shown in fig. 1, and the ear plate and the connecting hole are reserved on the structure as shown in fig. 2. However, the reserved and added connecting structure has the following defects: 1. the structure design is influenced; 2. the connection structure that adds in the work progress often is temporary measure, will get rid of after the construction is accomplished, brings very big difficulty when needing to change the cable in the future.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an adjustable ground tackle of fork ear formula for cable is provided with tensioning supporting structure to above-mentioned prior art, has the supporting structure that can regard as the tensioning construction on the adjustable ground tackle of fork ear formula, and the tensioning operation is implemented to the cable, and structural design is pleasing to the eye, and is convenient for change the cable.
The utility model provides a technical scheme that above-mentioned problem adopted does: a fork ear type adjustable anchorage device with a tensioning supporting structure for a guy cable comprises a fork ear type adjustable anchorage device, wherein the fork ear type adjustable anchorage device is arranged at the bottom end of the guy cable and is fixed on an engineering structure, a fixed end anchorage device is arranged at the top end of the guy cable, and the fixed end anchorage device is fixed on another engineering structure; the fork ear type adjustable anchorage device is provided with a tensioning device which is used for tensioning the fork ear type adjustable anchorage device;
the fork ear type adjustable anchorage device comprises a connecting fork ear and an anchor cup, wherein a tensioning supporting step is arranged on the connecting fork ear, an adjusting rod is arranged between the connecting fork ear and the anchor cup, one end of the adjusting rod is connected with the connecting fork ear through a sleeve, the adjusting rod and the connecting fork ear are respectively in threaded connection with the sleeve, and the adjusting rod is rotated to adjust the screwing depth of the adjusting rod into the sleeve; the anchor cup bottom sets up the adapter sleeve, the regulation pole other end is located in the adapter sleeve, anchor cup bottom and the vertical interval of leaving between another tip of regulation pole are as the clearance.
One end of the adjusting rod arranged in the connecting sleeve is provided with a circular truncated cone, and the diameter of the circular truncated cone is larger than that of the adjusting rod, so that the end part of the adjusting rod is in a step shape; the inner cavity of the connecting sleeve is matched with the end part of the adjusting rod.
The adjusting quantity between the adjusting rod and the sleeve is D, and D is more than or equal to +/-50 mm.
The tensioning device comprises an upper carrying pole beam unit and a lower carrying pole beam unit, the upper carrying pole beam unit is hooped on the anchor cup, the lower carrying pole beam unit is hooped on the connecting fork lug, two vertically-arranged tensioning screw rods are arranged between the upper carrying pole beam unit and the lower carrying pole beam unit in a penetrating manner, and the two tensioning screw rods are symmetrically arranged on two sides of the inhaul cable; two ends of the tensioning screw rod are respectively fixed on the lower shoulder pole beam unit and the upper shoulder pole beam unit, the upper shoulder pole beam unit is symmetrically provided with a jack and a supporting leg, and the jack is supported on the supporting leg.
The upper shoulder pole beam unit comprises two half upper shoulder pole beams which are oppositely arranged on the side surface of the anchor cup and fixedly connected through an upper connecting bolt; the lower shoulder pole beam unit comprises two half lower shoulder pole beams, and the two lower shoulder pole beams are involuted to the side surfaces of the connecting fork lugs and are fixedly connected through lower connecting bolts; the lower shoulder pole beam is respectively provided with a lower shoulder pole beam supporting step, and the lower shoulder pole beam supporting step is matched with the tensioning supporting step.
The movable clearance is P, and the P is 10-50 mm.
The tensioning method of the fork ear type adjustable anchorage device and the tensioning device for the inhaul cable with the tensioning support structure comprises the following steps:
the method comprises the following steps: unfolding the processed and manufactured inhaul cable, hoisting the fixed end of the inhaul cable, and fixing an anchorage device at the fixed end on an engineering structure;
step two: assembling the fork lug type adjustable anchorage device at the bottom end of the stay cable, and reserving a movable gap between the circular truncated cone at the top of the adjusting rod and the bottom end of the anchor cup; the fork ear type adjustable anchorage device is fixed on another engineering structure through a pin shaft to complete the installation of the inhaul cable;
step three: two half lower carrying pole beam hoops are arranged on the connecting fork lugs, the lower carrying pole beam supporting steps and the connecting fork lug supporting steps are buckled and attached tightly, and are fixed on the connecting fork lugs through lower connecting bolts;
step four: two half upper carrying pole beams are hooped on the anchor cup, and the upper carrying pole beams are fixed on the anchor cup through upper connecting bolts;
step five: two tightening screw rods respectively penetrate through the upper carrying pole unit and the lower carrying pole beam unit from top to bottom in sequence, the top end of the tensioning screw rod exposed out of the upper carrying pole beam unit is screwed with the adapter nut, the adapter nut is screwed on the top surface of the upper carrying pole beam unit, the bottom end of the tensioning screw rod exposed out of the lower carrying pole beam unit is screwed with the lower nut, the lower nut is screwed on the bottom surface of the lower carrying pole beam unit, and then the tensioning screw rod is temporarily fixed;
step six: the supporting feet and the jack are respectively penetrated through the corresponding tensioning screw rods, the supporting feet are supported on the upper shoulder pole beam unit, the jack is supported on the supporting feet, and the top of the post-tensioning screw rod is screwed with the nut, so that the installation of the tensioning device is completed;
step seven: synchronously starting the jack, extending a piston of the jack, pulling the tensioning screw rod, transmitting the tensioning force to an ear plate of a bottom structure through a lower nut at the lower end of the tensioning screw rod, the lower shoulder pole beam unit and the connecting fork ear, and pushing the anchor cup by the upper shoulder pole beam unit under the action of a reaction force to enable the inhaul cable to be pulled;
step eight: the stay cable is tensioned to generate elastic extension, so that the movable gap P is reduced, and a vertical gap is formed between the bottom of the circular table of the adjusting rod and the connecting sleeve, so that the adjusting rod is in a loose state without stress; rotating the adjusting rod to make the adjusting rod rotate towards the depth direction of the sleeve;
step nine: when the piston of the jack reaches the limit stroke, the switching nut is rotated to enable the switching nut to be tightly attached to the shoulder pole beam unit, and the rear jack returns oil; the tensioning screw is fixedly connected with the switching nut;
step ten: after the oil of the jack returns, screwing the upper nut to the end part of the piston of the jack, continuously starting the jack to perform the tensioning operation from the seventh step to the ninth step until the cable force of the inhaul cable meets the requirement, and finally rotating the adjusting rod for the first time to finish the tensioning of the inhaul cable;
step eleven: and after tensioning the inhaul cable, detaching the upper nut, detaching the jack, the supporting feet, the switching nut and the lower nut, and then detaching the upper carrying pole beam unit and the lower carrying pole beam unit.
Compared with the prior art, the utility model has the advantages of: a fork ear type adjustable anchorage device for a guy cable with a tensioning support structure and a tensioning method thereof are disclosed, wherein a tensioning device can directly use a connecting fork ear as a connecting support point, and a tensioning connection structure does not need to be reserved or additionally arranged on an engineering structure at an adjusting end, thereby bringing great convenience; the tension device has definite and reliable force transmission and strong operation practicability; the fork ear type adjustable anchorage device with the tensioning support structure and the tensioning method of the tensioning device are adopted, the working limitation of engineering structures is not required, the adaptability to working conditions is strong, and the construction auxiliary measure cost can be reduced.
Drawings
FIG. 1 is an illustration of an example of a connection hole reserved on an ear plate of an engineering structure in the prior art;
FIG. 2 is a diagram illustrating an example of adding a connection structure to an engineering structure according to the prior art;
fig. 3 is a schematic view of a fork ear type adjustable anchor for a guy cable with a tension support structure according to an embodiment of the present invention;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic view of the adjustable fork-type anchor of FIG. 3;
FIG. 6 is a side view of FIG. 5;
fig. 7 is a schematic view of a tensioning device according to an embodiment of the present invention mounted on a fork-ear type adjustable anchor with a tensioning support structure;
FIG. 8 is a view taken along line A of FIG. 7;
in the figure, 1 fixed end engineering structure, 2 adjusting end engineering structure, 3 fixed end anchorage, 4 guy cables, 5 anchor cups, 6 connecting sleeves, 7 adjusting rods, 71 round tables, 8 sleeves, 9 connecting fork lugs, 91 tensioning supporting steps, 10 pin shafts, 11 lower nuts, 12 lower shoulder pole beams, 13 lower connecting bolts, 14 tensioning screw rods, 15 upper connecting bolts, 16 upper shoulder pole beams, 17 switching nuts, 18 supporting legs, 19 jacks and 20 upper nuts.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 3 and 4, the fork ear type adjustable anchor for a guy cable with a tensioning supporting structure in this embodiment includes a fork ear type adjustable anchor, the fork ear type adjustable anchor is located at the bottom end of the guy cable 4, the fork ear type adjustable anchor is fixed to the adjusting end engineering structure 2, a fixed end anchor 3 is arranged at the top end of the guy cable 4, and the fixed end anchor 3 is fixed to the fixed end engineering structure 1. The fork lug type adjustable anchorage device is provided with a tensioning device, the fork lug type adjustable anchorage device is provided with a connecting supporting point for tensioning, and the tensioning device is used for tensioning the inhaul cable 4.
As shown in figure 5, the fork ear type adjustable anchorage device comprises a connecting fork ear 9 and an anchor cup 5, wherein two side surfaces of the connecting fork ear 9 are provided with tensioning supporting steps 91, a vertically arranged adjusting rod 7 is arranged between the connecting fork ear 9 and the anchor cup 5, the bottom end of the adjusting rod 7 is connected with the connecting fork ear 9 through a sleeve 8, the adjusting rod 7 and the connecting fork ear 9 are respectively in threaded connection with the sleeve 8, the adjusting rod 7 is rotated to adjust the screwing depth of the adjusting rod 7 into the sleeve 8, the adjusting amount between the adjusting rod 7 and the sleeve 8 is D, the D is required to meet the stroke requirement of guy cable pre-tightening, and the general requirement D is more than or equal to +/-50 mm. The connecting sleeve 6 is arranged at the bottom of the anchor cup 5, and the top end of the adjusting rod 7 is arranged in the connecting sleeve 6, so that a space is vertically reserved between the bottom end of the anchor cup 5 and the top end of the adjusting rod 7 to serve as a movable gap P.
The top end of the adjusting rod 7 arranged in the connecting sleeve 6 is provided with a circular truncated cone 71, and the diameter of the circular truncated cone 71 is larger than that of the adjusting rod 7, so that the top of the adjusting rod is stepped. The inner cavity of the connecting sleeve 6 is matched with the top end of the adjusting rod 7, the section of the inner cavity of the connecting sleeve 6 is stepped, and the circular truncated cone 71 is limited.
As shown in fig. 6, 7 and 8, the tensioning device comprises an upper carrying pole beam unit and a lower carrying pole beam unit, the upper carrying pole beam unit is hooped on the anchor cup 5, the lower carrying pole beam unit is hooped on the connecting fork ear 9, two tensioning screw rods 14 which are vertically arranged are arranged between the upper carrying pole beam unit and the lower carrying pole beam unit in a penetrating way, and the two tensioning screw rods 14 are symmetrically arranged at two sides of the inhaul cable 4. The bottom end of the tensioning screw 14 is fixed on the lower shoulder pole beam unit through the lower nut 11, the top end of the tensioning screw 14 is provided with a switching nut 17, the switching nut 17 is screwed on the tensioning screw 14, and the switching nut 17 is supported on the top surface of the upper shoulder pole beam unit. The top of the tension screw 14 is provided with a supporting leg 18, and the supporting leg 18 is supported on the top surface of the upper shoulder pole beam unit. A jack 19 is arranged on the supporting foot 18, the jack 19 penetrates through the tensioning screw 14, and an upper nut 20 is screwed on the rear tensioning screw 14, so that the supporting foot 18 and the jack 19 are fixed on the upper shoulder pole beam unit.
Wherein, the upper carrying pole beam unit comprises two half upper carrying pole beams 16, the two upper carrying pole beams 16 are involuted on the side surface of the anchor cup 5 and are fixedly connected through an upper connecting bolt 15. The lower carrying pole beam unit comprises two half lower carrying pole beams 12, the two lower carrying pole beams 12 are matched with the side surfaces of the connecting fork lugs 9, and the two lower carrying pole beams 12 are fixedly connected through lower connecting bolts 13. The lower carrying pole beam 12 is provided with a lower carrying pole beam supporting step B, which is matched with the tensioning supporting step 91, and further has a limiting function on the lower carrying pole beam unit as a connecting supporting point for tensioning.
A tensioning method of a fork ear type adjustable anchor for a guy cable with a tensioning support structure comprises the following steps:
A. cable installation
The method comprises the following steps: and (4) unfolding the processed and manufactured inhaul cable, hoisting the fixed end of the inhaul cable, and fixing the anchor at the fixed end on the engineering structure at the fixed end.
Step two: assembling the fork ear type adjustable anchorage device at the bottom end of the inhaul cable, and reserving a movable gap between the circular table at the top of the adjusting rod and the bottom end of the anchor cup, wherein the movable gap is P, and the P is 10-50 mm. The fork ear type adjustable anchorage device is fixed on an engineering structure at the adjusting end through a pin shaft to complete the installation of the inhaul cable.
B. Installation tensioning device
Step three: the two half lower shoulder pole beam hoops are arranged on the connecting fork lugs, and the lower shoulder pole beam supporting steps and the connecting fork lug supporting steps are mutually buckled and attached tightly and are fixed on the connecting fork lugs through lower connecting bolts.
Step four: the two half upper shoulder pole beams are hooped on the anchor cup, and the upper shoulder pole beams are fixed on the anchor cup through upper connecting bolts.
Step five: the tensioning screw rod sequentially penetrates through the upper carrying pole unit and the lower carrying pole beam unit from top to bottom, the top end of the tensioning screw rod exposed out of the upper carrying pole beam unit is screwed with the adapter nut, the adapter nut is screwed onto the top surface of the upper carrying pole beam unit, the bottom end of the tensioning screw rod exposed out of the lower carrying pole beam unit is screwed with the lower nut, and the lower nut is screwed to the bottom surface of the lower carrying pole beam unit so as to temporarily fix the tensioning screw rod.
Step six: the supporting feet and the jack are respectively penetrated through the corresponding tensioning screw rods, the supporting feet are supported on the upper shoulder pole beam unit, the jack is supported on the supporting feet, and the top of the post-tensioning screw rod is screwed with the nut, so that the tensioning device is installed.
C. Tensioning cable
Step seven: and synchronously starting the jacks, extending out the pistons of the jacks, pulling the tensioning screw rod, transmitting the tensioning force to the lug plate of the engineering structure at the adjusting end through the lower nuts, the lower shoulder pole beam units and the connecting fork lugs at the lower ends of the tensioning screw rod, and pushing the anchor cup by the upper shoulder pole beam units under the action of reaction force to enable the inhaul cable to be subjected to the tensioning force.
Step eight: the inhaul cable is pulled to generate elastic extension, so that the movable gap amount P between the top surface of the round platform of the adjusting rod and the bottom of the anchor cup is reduced, a gap can be formed between the bottom of the round platform of the adjusting rod and the connecting sleeve, the adjusting rod is in a non-stressed loose state, and at the moment, the adjusting rod is rotated, so that the adjusting rod is screwed in the depth direction of the sleeve.
Step nine: when the piston of the jack reaches the limit stroke, the switching nut is rotated to enable the switching nut to be attached to the upper shoulder pole beam unit, the rear jack returns oil, and at the moment, the tensioning screw rod is fixed by the switching nut and cannot fall down.
Step ten: and after the oil of the jack returns, screwing the upper nut to the end part of the piston of the jack, continuously starting the jack to perform the tensioning operation from the seventh step to the ninth step until the cable force of the inhaul cable meets the requirement, and finally rotating the adjusting rod for the first time to finish the tensioning of the inhaul cable.
D. Dismantle overspeed device tensioner
Step eleven: and after the tensioning of the inhaul cable is finished, the upper nut is disassembled, the jack, the supporting foot, the switching nut and the lower nut are disassembled, and then the upper shoulder pole beam unit and the lower shoulder pole beam unit are disassembled.
The tensioning device can directly use the connecting fork lug as a connecting supporting point, and a tensioning connection structure does not need to be reserved or additionally arranged on an engineering structure at the adjusting end, so that great convenience is brought; the tension device has definite and reliable force transmission and strong operation practicability; the fork ear type adjustable anchorage device with the tensioning support structure and the tensioning method of the tensioning device are adopted, the working limitation of engineering structures is not required, the adaptability to working conditions is strong, and the construction auxiliary measure cost can be reduced.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a take tensioning support structure's adjustable ground tackle of fork ear formula for cable which characterized in that: the adjustable anchor device comprises a fork ear type adjustable anchor device, wherein the fork ear type adjustable anchor device is arranged at the bottom end of a stay cable and is fixed on one engineering structure, a fixed end anchor device is arranged at the top end of the stay cable, and the fixed end anchor device is fixed on the other engineering structure; the fork ear type adjustable anchorage device is provided with a tensioning device which is used for tensioning the fork ear type adjustable anchorage device;
the fork ear type adjustable anchorage device comprises a connecting fork ear and an anchor cup, wherein a tensioning supporting step is arranged on the connecting fork ear, an adjusting rod is arranged between the connecting fork ear and the anchor cup, one end of the adjusting rod is connected with the connecting fork ear through a sleeve, the adjusting rod and the connecting fork ear are respectively in threaded connection with the sleeve, and the adjusting rod is rotated to adjust the screwing depth of the adjusting rod into the sleeve; the anchor cup bottom sets up the adapter sleeve, the regulation pole other end is located the adapter sleeve, anchor cup bottom and the vertical interval of leaving between the regulation pole other end are as the clearance.
2. The adjustable anchor of claim 1, wherein the adjustable anchor comprises: one end of the adjusting rod arranged in the connecting sleeve is provided with a circular truncated cone, and the diameter of the circular truncated cone is larger than that of the adjusting rod, so that the end part of the adjusting rod is in a step shape; the inner cavity of the connecting sleeve is matched with the end part of the adjusting rod.
3. The adjustable anchor with tension support structure for guy cable of claim 1, wherein: the adjusting quantity between the adjusting rod and the sleeve is D, and D is more than or equal to +/-50 mm.
4. The adjustable anchor of claim 1, wherein the adjustable anchor comprises: the tensioning device comprises an upper carrying pole beam unit and a lower carrying pole beam unit, the upper carrying pole beam unit is hooped on the anchor cup, the lower carrying pole beam unit is hooped on the connecting fork lug, two vertically-arranged tensioning screw rods are arranged between the upper carrying pole beam unit and the lower carrying pole beam unit in a penetrating manner, and the two tensioning screw rods are symmetrically arranged on two sides of the inhaul cable; two ends of the tensioning screw rod are respectively fixed on the lower carrying pole beam unit and the upper carrying pole beam unit, the upper carrying pole beam unit is symmetrically provided with a jack and a supporting leg, and the jack is supported on the supporting leg.
5. The adjustable anchor of claim 4, wherein the adjustable anchor comprises: the upper shoulder pole beam unit comprises two half upper shoulder pole beams which are oppositely arranged on the side surface of the anchor cup and fixedly connected through an upper connecting bolt; the lower carrying pole beam unit comprises two half lower carrying pole beams, and the two lower carrying pole beams are involuted to the side surfaces of the connecting fork lugs and are fixedly connected through lower connecting bolts; the lower carrying pole beams are respectively provided with lower carrying pole beam supporting steps which are matched with the tensioning supporting steps.
6. The adjustable anchor with tension support structure for guy cable of claim 1, wherein: the movable clearance is P, and the P is 10-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220731867.4U CN217733755U (en) | 2022-03-31 | 2022-03-31 | Fork ear type adjustable anchor with tensioning supporting structure for inhaul cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220731867.4U CN217733755U (en) | 2022-03-31 | 2022-03-31 | Fork ear type adjustable anchor with tensioning supporting structure for inhaul cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217733755U true CN217733755U (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220731867.4U Active CN217733755U (en) | 2022-03-31 | 2022-03-31 | Fork ear type adjustable anchor with tensioning supporting structure for inhaul cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217733755U (en) |
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2022
- 2022-03-31 CN CN202220731867.4U patent/CN217733755U/en active Active
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