Auxiliary device for cutting stay cable sleeve

Abstract

The utility model discloses an auxiliary device for cutting a stay cable sleeve, which belongs to the technical field of bridge stay cable detection and comprises a circular sleeve, the circular sleeve is sleeved on a stay cable, the stay cable consists of a steel strand and a stay cable sleeve, the circular sleeve comprises two semicircular sleeves which are oppositely arranged, and the two semicircular sleeves are oppositely arranged. Annular limiting grooves and longitudinal limiting grooves are formed in the semicircular sleeves, threaded holes are formed in the semicircular sleeves, fixing bolts are installed in the threaded holes, the tail ends of the fixing bolts make contact with the outer wall of the stay cable sleeve, one sides of the two semicircular sleeves are connected through hinges, and the other sides of the two semicircular sleeves are connected through lock catches. According to the utility model, the steel cable can be prevented from being damaged, the consumed time is short, and the requirements on equipment and operation conditions are low.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stay cable sleeve cutting auxiliary device belongs to bridge stay cable detection technical field. BACKGROUND

[0002] As a modern large bridge structure form, the cable-stayed bridge is widely used in urban crossing, highway and railway traffic network with its unique visual effect, efficient structure performance and economical construction technology. The stay cable is an important stressed member in the cable-stayed bridge structure, and its main function is to transfer the vertical load of the main beam to the main tower, thereby providing the stability and anti-overturning ability of the overall structure. With its lightness and high strength, the stay cable has become an indispensable part of modern bridge design. However, the stay cable will be affected by various factors during long-term use, such as fatigue load, environmental corrosion, temperature change and material aging. For the cable-stayed bridge with long service life, the phenomenon of stay cable sleeve cracking and moisture penetration leading to stay cable corrosion may occur, and its health condition is directly related to the overall stability and driving safety of the bridge. Therefore, it is very important to cut and check the cracking part of the stay cable sleeve and evaluate it.

[0003] At present, there are many methods for cutting the stay cable sleeve, such as cutting stripping method, mechanical stripping method, thermal stripping method and chemical stripping method, but there are also many limitations and deficiencies. The cutting stripping method may cause damage to the internal steel cable during cutting; the mechanical stripping method requires high-precision special mechanical equipment and takes a long time; the thermal stripping method may introduce thermal stress during heating, causing damage to the steel cable, and requires precise control of heating temperature and time, with high operating condition requirements; the chemical solution in the chemical stripping method may cause harm to the environment and personnel and may also corrode the steel cable material. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a stay cable sleeve cutting auxiliary device, which can avoid damage to the steel cable, save time and has low requirements for equipment and operating conditions.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A stay cable sleeve cutting auxiliary device, comprising a circular sleeve, the circular sleeve is sleeved on the stay cable, the stay cable is composed of a steel strand and a stay cable sleeve, the circular sleeve comprises two oppositely arranged half-circular sleeves, the half-circular sleeves are provided with a circumferential limiting groove and a longitudinal limiting groove, the half-circular sleeves are provided with threaded holes, the threaded holes are provided with fixing bolts, the ends of the fixing bolts are in contact with the outer wall of the stay cable sleeve, one side of the two half-circular sleeves is connected through a hinge, and the other side is connected through a lock catch.

[0007] The hinge joint comprises a fixed shaft, two leaves are rotatably connected to the fixed shaft, anchor holes are formed in the leaves, and two fixed screws are used to anchor the two leaves to the two semicircular sleeves respectively.

[0008] The lock catch comprises two fixed bases, anchor holes are formed in the fixed bases, two fixed screws are used to anchor the two fixed bases to the two semicircular sleeves respectively, and the vertical parts of the two fixed bases are fixed by a connecting pin.

[0009] The number of the hinge joints and the number of the lock catches are both three.

[0010] The number of the annular limiting grooves is two, and the annular limiting grooves are located at the two ends of the semicircular sleeve. The number of the longitudinal limiting groove is one, and the longitudinal limiting groove is located at the middle position of the axis of the semicircular sleeve.

[0011] The number of the fixed screws on a single semicircular sleeve is four.

[0012] The materials of the hinge joints and the lock catches are steel.

[0013] The material of the circular sleeve is one of polyphenylene sulfide, ceramic matrix composite and glass fiber reinforced plastic.

[0014] The auxiliary cutting device for the cable-stayed cable sleeve has the advantages that the annular limiting grooves and the longitudinal limiting groove are formed in the semicircular sleeve, the threaded holes are arranged on the semicircular sleeve, the fixed screws are arranged in the threaded holes, the end of the fixed screw is in contact with the outer wall of the cable-stayed cable sleeve, the cracking position on the cable-stayed cable sleeve is positioned by adjusting the position of the semicircular sleeve, the semicircular sleeve is fixed by the fixed screws, the high-temperature cutter is used for cutting along the annular limiting grooves and the longitudinal limiting groove, the steel cable can be prevented from being damaged, the time is saved, and the requirements for the equipment and the operation conditions are low. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a front view structural schematic diagram of the auxiliary cutting device for the cable-stayed cable sleeve;

[0016] Figure 2 is a rear view structural schematic diagram of the auxiliary cutting device for the cable-stayed cable sleeve;

[0017] Figure 3 is a structural schematic diagram of the semicircular sleeve in the auxiliary cutting device for the cable-stayed cable sleeve;

[0018] Figure 4 is a structural schematic diagram of the hinge joint in the auxiliary cutting device for the cable-stayed cable sleeve;

[0019] Figure 5 is the structure diagram of the lock catch in the utility model;

[0020] The reference signs in the drawing are as follows: 1 - stay cable; 2 - round sleeve; 3 - hinge hinge; 4 - lock catch; 11 - steel strand; 12 - stay cable sleeve; 21 - semicircular sleeve; 22 - fixed nut; 23 - annular limiting groove; 24 - longitudinal limiting groove; 31 - blade; 32 - fixed shaft; 33 - fixed screw; 41 - fixed base; 42 - connecting pin; 43 - fixed screw. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings, and the following examples are only used for more clearly explaining the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0022] Example 1

[0023] As Figure 1 and Figure 2 shown, the utility model discloses a kind of stay cable sleeve cutting auxiliary devices, including round sleeve 2, round sleeve 2 is set on stay cable 1, stay cable 1 is composed of steel strand 11 and stay cable sleeve 12.Round sleeve 2 includes two oppositely arranged semicircular sleeves 21, semicircular sleeve 21 is provided with annular limiting groove 23 and longitudinal limiting groove 24, annular limiting groove 23 and longitudinal limiting groove 24 are used to provide guide for high temperature cutter, facilitate cutting cutter to carry out the auxiliary cutting of stay cable sleeve.Semicircular sleeve 21 is provided with threaded hole, fixed bolt 22 is installed in threaded hole, the end of fixed bolt 22 and stay cable sleeve 12 outer wall contact, for fixing stay cable 1.Two semicircular sleeves 21 are connected by hinge hinge 3 on one side, and are connected by lock catch 4 on the other side.

[0024] The working process of the utility model is as follows: first, stay cable 1 is placed in round sleeve 2, the cracking part is positioned, then lock catch 4 is closed, then fixed bolt 22 is locked, finally, high temperature cutter is used to cut along the annular limiting groove 23 and longitudinal limiting groove 24 of the device.The utility model is suitable for stay cable sleeve cutting, cooperates with high temperature cutter, can avoid damage caused by steel cable, time-consuming is short, and the requirement of equipment and operating condition is low.

[0025] Example 2

[0026] As Figure 1 and Figure 2The utility model discloses a cable-stayed cable sleeve cutting auxiliary device, including circular sleeve 2, circular sleeve 2 is equipped on cable-stayed cable 1, and cable-stayed cable 1 is composed of steel strand 11 and cable-stayed cable sleeve 12. Circular sleeve 2 includes two oppositely arranged semicircular sleeves 21, and the semicircular sleeve 21 is provided with annular limit groove 23 and longitudinal limit groove 24, and the annular limit groove 23 and longitudinal limit groove 24 are used to provide the guide for high-temperature cutter, and the auxiliary cutting of cutting cutter to cable-stayed cable sleeve is facilitated. Semicircular sleeve 21 is provided with threaded hole, and fixed bolt 22 is installed in threaded hole, and the number of fixed bolt 22 on single semicircular sleeve 21 is four. The end of fixed bolt 22 is in contact with the outer wall of cable-stayed cable sleeve 12, and is used for fixing cable-stayed cable 1. One side between two semicircular sleeves 21 is connected through hinge joint 3, and the other side is connected through lock catch 4. The number of hinge joint 3 and lock catch 4 is three. Among them, the material of circular sleeve 2 is one of polyphenylene sulfide, ceramic matrix composite material and glass fiber reinforced plastic, which can avoid the influence of high-temperature cutter on its performance during cutting, and the light weight can improve the safety of aerial operation.

[0027] The utility model discloses through lock catch 4 and fixed bolt 22 temporary installation on cable-stayed cable 1, has convenient to dismount, reduced cutting time, can reduce the time of personnel in high altitude operation, thereby reduces the influence to traffic, guarantees economic and social benefits.

[0028] As Figure 3 The number of annular limit groove 23 is two, and is located at both ends of semicircular sleeve 21. The number of longitudinal limit groove 24 is one, and is located at the middle position of the axis of semicircular sleeve 21.

[0029] As Figure 4 The material of hinge joint 3 is steel, including fixed shaft 32, and two blades 31 are rotatably connected on fixed shaft 32, two anchor holes are formed in blade 31, and fixed screw 33 passes through anchor hole and anchors two blades 31 on two semicircular sleeves 21 respectively.

[0030] As Figure 5 The material of lock catch 4 is steel, including two fixed bases 41, two anchor holes are formed in fixed base 41, fixed screw 43 passes through anchor hole and anchors two fixed bases 41 on two semicircular sleeves 21 respectively, and the vertical part between two fixed bases 41 is fixed through connecting pin 42, so that circular sleeve 21 can be conveniently installed or dismounted on cable-stayed cable 1 when using.

[0031] The use process of the utility model is: need first the position of the cracking part on the stay cable sleeve 12 is positioned, then the circular sleeve 2 is sleeved in the position, and the connecting pin 42 is clamped into the lock catch 4, then the fixing bolt 22 is tightened, so that the device can be stably clamped on the stay cable sleeve 12, finally cutting is carried out along the annular limiting groove 23 and longitudinal limiting groove 24 of the device by using high temperature cutter, after cutting is completed, the connecting pin 42 is pulled out from the clasp 4, the device is removed, and the next stay cable sleeve 12 cracking part cutting is carried out.

[0032] The utility model uses the stay cable sleeve cutting auxiliary device in the process of cutting the stay cable sleeve by using high temperature cutter, can effectively avoid the problem of uneven cutting surface and high cutting difficulty caused by the smooth surface of stay cable, improves the cutting precision, and optimizes the cutting process.

[0033] The above is only the preferred embodiment of the utility model, and it should be pointed out that: for ordinary skilled person in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. A stay cable jacket cutting aid device, characterized by: The utility model provides a kind of cable fixing device, including circular sleeve (2), the circular sleeve (2) is sleeved on stay cable (1), the stay cable (1) is composed of steel strand (11) and stay cable sleeve (12), the circular sleeve (2) includes two oppositely arranged half circular sleeve (21), annular limiting slot (23) and longitudinal limiting slot (24) are set on the half circular sleeve (21), threaded hole is provided on the half circular sleeve (21), fixed bolt (22) is mounted in the threaded hole, the end of fixed bolt (22) is in contact with the outer wall of stay cable sleeve (12), two half circular sleeve (21) are connected by hinge hinge (3) on one side, and are connected by lock catch (4) on the other side.

2. A stay cable jacket cutting aid as claimed in claim 1, characterised in that: The hinge hinge (3) includes fixed shaft (32), two blades (31) are rotatably connected on the fixed shaft (32), anchor holes are formed in the blades (31), and fixed screws (33) pass through the anchor holes to anchor the two blades (31) to the two half circular sleeves (21) respectively.

3. The stay cable jacket cutting aid of claim 1, wherein: The lock catch (4) includes two fixed bases (41), anchor holes are formed in the fixed bases (41), and fixed screws (43) pass through the anchor holes to anchor the two fixed bases (41) to the two half circular sleeves (21) respectively, and the vertical portions of the two fixed bases (41) are fixed by a connecting pin (42).

4. The stay cable jacket cutting aid of claim 1, wherein: The number of the hinge hinge (3) and the lock catch (4) is three.

5. The stay cable jacket cutting aid of claim 1, wherein: The number of the annular limiting slot (23) is two, and the annular limiting slots (23) are located at the two ends of the half circular sleeve (21); the number of the longitudinal limiting slot (24) is one, and the longitudinal limiting slot (24) is located at the middle position of the axis of the half circular sleeve (21).

6. The stay cable jacket cutting aid of claim 1, wherein: The number of the fixed bolts (22) on a single half circular sleeve (21) is four.

7. The stay cable jacket cutting aid of claim 1, wherein: The material of the hinge hinge (3) and the lock catch (4) is steel.

8. The stay cable jacket cutting aid of claim 1, wherein: The material of the circular sleeve (2) is one of polyphenylene sulfide, ceramic matrix composite and glass fiber reinforced plastic. The material of the circular sleeve (2) is one of polyphenylene sulfide, ceramic matrix composite and glass fiber reinforced plastic.

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