Stay cable cutting mechanism with fixing function and construction method thereof

Abstract

The invention belongs to the technical field of bridges, and discloses a stay cable cutting mechanism with a fixing function and a construction method thereof, the stay cable cutting mechanism comprises a bridge floor main body and a main tower, a stay cable main body is connected between the bridge floor main body and the main tower, the stay cable cutting mechanism further comprises a base assembly, and the base assembly is placed on the bridge floor main body; and the supporting assembly is arranged at the top of the base assembly. The stay cable main body is cut through cutting equipment, after the stay cable main body is broken, the stay cable main body close to the main tower end pulls a second clamping piece under the action of self tension and gravity, a second supporting frame and a sliding block slide in a first sliding groove, and due to the fact that the end of a protruding block makes contact with the bottom of the sliding block, the stay cable main body can be conveniently clamped. The sliding resistance of the sliding block is increased through the circular shaft and the convex block, so that the sliding block carries the end part of the stay cable main body to slowly slide, the stay cable main body slowly falls after being broken, and the phenomenon that the stay cable main body is broken due to overlarge tension to cause damage to a bridge floor is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of bridges, and in particular is a stay cable cutting mechanism with a fixing function and a construction method thereof. Background Art

[0002] The cable-stayed cable is an indispensable key component in modern bridge engineering. It is mainly used in cable-stayed bridges. Through its high-strength tension, it balances the gravity of the main beam and external loads, thereby realizing the spanning function of the bridge. With the continuous increase in the span of bridges, the design and construction technology of the cable-stayed cable is also constantly developing. However, during the operation of the bridge, due to environmental factors, material aging or accidental damage, the cable-stayed cable may rust, break or relax, which seriously affects the safety and stability of the bridge. The replacement and maintenance of the cable-stayed cable has become an important part of bridge maintenance; the traditional cutting method usually uses manual (such as a grinding wheel cutter), and the transmission cutting equipment is difficult to effectively fix the cable-stayed cable during the cutting process, resulting in unstable cutting. The cable-stayed cable has a high tension in the tensioned state. Direct separation causes the tension to be suddenly released, causing an impact on the bridge structure, which poses a certain safety hazard. Therefore, a cable-stayed cable cutting mechanism with a fixing function and a construction method thereof are proposed. Summary of the invention

[0003] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a cable-stayed cutting mechanism with a fixing function and a construction method thereof, which solves the problem that the existing cable-stayed cables have very high tension in the tensioned state, and direct separation leads to sudden release of tension, causing impact on the bridge structure.

[0004] To achieve the above object, the present invention provides the following technical solution: a cable-stayed cutting mechanism with a fixing function, comprising a bridge deck body and a main tower, wherein the bridge deck body and the main tower are connected with the cable-stayed cable body, and further comprising: A base assembly, wherein the base assembly is fixed on the bridge deck body; A support assembly, the support assembly is arranged on the top of the base assembly, and the support assembly is used to install a cutting device; A clamping assembly, wherein the clamping assembly is arranged on the top of the base assembly, the support assembly and the clamping assembly are used to clamp the inclined cable body, and the cutting device is located between the support assembly and the clamping assembly; A deceleration assembly, wherein the deceleration assembly is disposed inside the base assembly; The clamping assembly includes two sliding blocks sliding inside the base assembly, a baffle is fixedly mounted on the bottom of the sliding block, a roller is arranged between the baffle and the sliding block, the two sliding blocks are connected by a connecting plate, and a second clamping member is installed on the top of the connecting plate through a second support frame; The deceleration assembly comprises a round shaft movably mounted inside the base assembly, a convex block is fixedly mounted outside the round shaft, the top of the convex block contacts the bottom of the sliding block, and the convex block is made of rubber material; The cutting device is located between the supporting assembly and the clamping assembly to cut the main body of the inclined cable. When the main body of the inclined cable breaks, the sliding block is driven to slide toward one end along the base assembly under the action of its own tension.

[0005] Preferably, the base assembly comprises a main beam placed on the top of the bridge deck body, and a first slide groove is provided inside the main beam; The sliding block slides at the upper end inside the first sliding groove, and the round shaft and the protrusion are located at the lower end of the first sliding groove.

[0006] Preferably, the protrusion is inclined toward the main tower, and the direction in which the sliding block slides along the first sliding groove is consistent with the inclination direction of the protrusion.

[0007] Preferably, the support assembly comprises a docking plate fixedly mounted on the main beam, and the docking plate is movably mounted with a first clamping member through a first support frame; The inner wall of the first clamping member is provided with a rubber pad, and the second clamping member has the same structure as the first clamping member.

[0008] Preferably, the support assembly further comprises a fixing frame fixedly mounted on the side of the first clamping member, a guide rod is arranged inside the fixing frame, a docking block is slidably mounted on the guide rod, and a cutting device is mounted on the top of the docking block.

[0009] Preferably, when the sliding block slides along the first sliding groove to approach the supporting assembly, the fixing frame is fixedly connected to the second clamping member through the docking ear with the help of bolts, so that the inclination directions of the fixing frame, the first clamping member, the second clamping member and the inclined cable body are consistent.

[0010] Preferably, the deceleration assembly further comprises a fixed cover fixedly mounted on the side of the main beam, a fixed rod is fixedly mounted on the side of the circular shaft, a coil spring is fixedly mounted on the inner wall of the fixed cover, and the coil spring is fixedly connected to the outside of the fixed rod; A movable cover is fixedly mounted on the outside of the fixed rod, and the movable cover is movably sleeved on the outside of the fixed cover.

[0011] Preferably, a finger rod is fixedly mounted on the outside of the movable cover, a lug is fixedly mounted on the periphery of the fixed cover, a second slide groove is provided on the lug, a slider is movably mounted inside the second slide groove, a threaded rod is threadedly connected to the slider, a pressure plate is movably sleeved on the outside of the threaded rod, and a limiting ring for limiting the pressure plate is fixedly mounted on the outside of the threaded rod; The round shaft and the protrusion are in an inclined state under the action of the coil spring, and the round shaft, the protrusion, the movable cover and the finger rod are limited by the threaded rod.

[0012] The present invention also provides a method for cutting and constructing a stay cable with a fixing function, comprising the following steps: S1. The main body of the inclined cable is clamped by the support assembly and the second clamping member, a cutting device is installed on the support assembly, and the main body of the inclined cable is cut by the cutting device; S2, after the main body of the cable breaks, the main body of the cable near the main tower end pulls the second clamping member, the second support frame and the sliding block to slide along the first sliding groove under the action of its own tension and gravity; S3. Since the end of the protrusion contacts the bottom of the sliding block, the sliding resistance of the sliding block is increased through the circular shaft and the protrusion, so that the end of the sliding block carrying the inclined cable body slides slowly; S4. Since the support assembly and the clamping assembly are clamped on the outside of the inclined cable body, when the sliding block slides along the first slide groove to the end close to the main tower, it is connected to the inclined cable body close to the bridge deck body through the support assembly, and the support assembly is fixed to one end of the base assembly, so as to prevent the main beam from tilting during the sliding of the sliding block and the inclined cable body close to the main tower along the first slide groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a cutting device to cut the main body of the cable. After the main body of the cable breaks, the main body of the cable close to the main tower pulls the second clamping member, the second support frame and the sliding block to slide along the first slide groove under the action of its own tension and gravity. Since the end of the protrusion contacts the bottom of the sliding block, the sliding resistance of the sliding block is increased through the circular shaft and the protrusion, so that the sliding block carries the end of the main body of the cable and slides slowly, so that the main body of the cable falls slowly after breaking, thereby avoiding the phenomenon that the main body of the cable breaks due to excessive tension and hits the bridge deck to cause damage; The present invention is clamped on the outside of the inclined cable body by the first clamping piece, the sliding block slides along the first sliding groove to the end close to the fixing frame, the fixing frame is fixedly connected with the second clamping piece by the docking ear with the help of bolts, the second clamping piece is clamped on the outside of the inclined cable body, the inclined cable body is clamped and fixed by the first clamping piece and the second clamping piece, the cutting device is installed on the docking block, and since the fixing frame is installed on the first clamping piece and the second clamping piece in the same inclination direction, the cutting device is kept parallel to the cross section of the inclined cable body, and when the inclined cable body is cut by the cutting device, the cross section of the inclined cable body can be guaranteed to be more flat; The present invention promotes the finger rod, the movable cover, the fixed rod, the circular shaft and the convex block to rotate, so that the convex block always keeps in contact with the bottom of the sliding block. At this time, rotating the threaded rod can drive the sliding block to slide up along the second sliding groove and contact the finger rod. Rotating the threaded rod in the opposite direction can limit the finger rod and ensure that the convex block contacts the bottom of the sliding block. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention; Figure 2 It is a schematic diagram of the appearance structure of the base assembly, the support assembly, the clamping assembly and the deceleration assembly of the present invention; Figure 3 This is a schematic diagram of the disassembled structure of the clamping assembly and the base assembly of the present invention; Figure 4 It is a schematic diagram of the coordination structure of the support assembly and the clamping assembly of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the clamping assembly and the base assembly of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the appearance structure of the clamping assembly of the present invention; Figure 8 It is a schematic diagram of the matching structure of the sliding block and the protrusion of the present invention; Fig. 9 It is a schematic diagram of the matching structure of the base assembly, the clamping assembly and the speed reduction assembly of the present invention; Fig.10 This is a schematic diagram of the disassembled structure of the base assembly, the clamping assembly and the speed reduction assembly of the present invention; Fig.11 This is a schematic diagram of the disassembled structure of the speed reduction assembly of the present invention; Fig.12 It is a schematic diagram of the matching structure of the lug and the slider of the present invention.

[0015] In the figure: 1. bridge deck body; 2. main tower; 3. cable-stayed cable body; 4. base assembly; 41. main beam; 42. first slide groove; 5. support assembly; 51. fixed frame; 52. guide rod; 53. docking ear; 54. docking block; 55. docking plate; 56. first support frame; 57. first clamping member; 6. clamping assembly; 61. second clamping member; 62. second support frame; 63. sliding block; 64. connecting plate; 65. baffle; 66. roller; 7. reduction assembly; 71. circular shaft; 72. protrusion; 73. movable cover; 74. fixed cover; 75. coil spring; 711. finger rod; 712. protrusion; 713. second slide groove; 714. slider; 715. limit ring; 716. pressure plate; 717. threaded rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figures 1 to 12 As shown, the present invention provides a cable-stayed cutting mechanism with a fixing function, comprising a bridge deck body 1 and a main tower 2, wherein a cable-stayed body 3 is connected between the bridge deck body 1 and the main tower 2, and further comprising: A base assembly 4, the base assembly 4 is fixed on the bridge deck body 1; A support assembly 5, the support assembly 5 is arranged on the top of the base assembly 4, and the support assembly 5 is used to install the cutting equipment; The clamping assembly 6 is arranged on the top of the base assembly 4. The support assembly 5 and the clamping assembly 6 are used to clamp the inclined cable body 3. The cutting device is located between the support assembly 5 and the clamping assembly 6. A deceleration assembly 7, wherein the deceleration assembly 7 is arranged inside the base assembly 4; The clamping assembly 6 includes two sliding blocks 63 that slide inside the base assembly 4. A baffle 65 is fixedly mounted on the bottom of the sliding block 63. A roller 66 is arranged between the baffle 65 and the sliding block 63. The two sliding blocks 63 are connected by a connecting plate 64. A second clamping member 61 is installed on the top of the connecting plate 64 through a second support frame 62. The deceleration assembly 7 includes a round shaft 71 movably mounted inside the base assembly 4, and a protrusion 72 is fixedly mounted outside the round shaft 71. The top of the protrusion 72 contacts the bottom of the sliding block 63, and the protrusion 72 is made of rubber material; The cutting device is located between the support assembly 5 and the clamping assembly 6 to cut the inclined cable body 3. The inclined cable body 3 is broken and drives the sliding block 63 to slide toward one end along the base assembly 4 under the action of its own tension; The base assembly 4 includes a main beam 41 fixed to the top of the bridge deck body 1, and a first slide groove 42 is provided inside the main beam 41; The sliding block 63 slides at the upper end of the first sliding groove 42, and the round shaft 71 and the protrusion 72 are located at the lower end of the first sliding groove 42; The protrusion 72 is inclined toward the main tower 2 , and the sliding direction of the sliding block 63 along the first sliding groove 42 is consistent with the inclined direction of the protrusion 72 .

[0018] The main body 3 of the inclined cable is clamped by the support assembly 5 and the second clamping member 61, and the cutting device is installed on the support assembly 5. The main body 3 of the inclined cable is cut by the cutting device. After the main body 3 of the inclined cable is broken, the main body 3 of the inclined cable near the end of the main tower 2 pulls the second clamping member 61, the second support frame 62 and the sliding block 63 to slide along the first slide groove 42 under the action of its own tension and gravity. Since the end of the protrusion 72 contacts the bottom of the sliding block 63, the sliding resistance of the sliding block 63 is increased by the circular shaft 71 and the protrusion 72, so that the sliding block 63 carries the end of the inclined cable main body 3 and slides slowly. After the main body 3 of the inclined cable is broken, it slowly falls, so as to avoid the phenomenon that the main body 3 of the inclined cable is broken due to excessive tension and hits the bridge deck and is damaged; At the same time, since the support assembly 5 and the clamping assembly 6 are clamped on the outside of the inclined cable body 3, when the sliding block 63 slides along the first slide groove 42 to the end close to the main tower 2, it is connected to the inclined cable body 3 close to the end of the bridge deck body 1 through the support assembly 5, and the support assembly 5 is fixed to one end of the base assembly 4. The stability of the main beam 41 is improved through the support assembly 5, the inclined cable body 3 and the bridge deck body 1, and the phenomenon of the main beam 41 being tilted due to the sliding block 63 and the inclined cable body 3 close to the end of the main tower 2 sliding along the first slide groove 42 is avoided.

[0019] It is explained here that the design specifications of the base assembly 4 and the clamping assembly 6 are able to withstand the tension released by the inclined cable body 3, and the clamping assembly 6 can bear a load of at least 1000 kN.

[0020] like Figure 1-Figure 4 As shown, the support assembly 5 includes a docking plate 55 fixedly mounted on the main beam 41, and the docking plate 55 is movably mounted with a first clamping member 57 through a first support frame 56; The inner wall of the first clamping member 57 is provided with a rubber pad, and the second clamping member 61 has the same structure as the first clamping member 57; The support assembly 5 further includes a fixing frame 51 fixed to the side of the first clamping member 57, a guide rod 52 is arranged inside the fixing frame 51, a docking block 54 is slidably arranged on the guide rod 52, and a cutting device is installed on the top of the docking block 54; When the sliding block 63 slides along the first sliding groove 42 to approach the supporting assembly 5, the fixing frame 51 is fixedly connected to the second clamping member 61 through the docking ear 53 by means of bolts, so that the fixing frame 51, the first clamping member 57, the second clamping member 61 and the inclined cable body 3 are in the same inclination direction.

[0021] The first clamping member 57 is clamped on the outside of the inclined cable body 3, and the sliding block 63 slides along the first sliding groove 42 to the end close to the fixing frame 51. The fixing frame 51 is fixedly connected with the second clamping member 61 through the docking ear 53 by means of bolts. The second clamping member 61 is clamped on the outside of the inclined cable body 3. The inclined cable body 3 is clamped and fixed by the first clamping member 57 and the second clamping member 61. The cutting device is installed on the docking block 54. Since the fixing frame 51 is installed on the first clamping member 57 and the second clamping member 61 in the same inclination direction, the cutting device is kept parallel to the cross section of the inclined cable body 3. When the inclined cable body 3 is cut by the cutting device, the cross section of the inclined cable body 3 can be guaranteed to be flatter.

[0022] like Figure 5-Figure 12 As shown, the deceleration assembly 7 further includes a fixed cover 74 fixedly mounted on the side of the main beam 41, a fixed rod is fixedly mounted on the side of the circular shaft 71, a coil spring 75 is fixedly mounted on the inner wall of the fixed cover 74, and the coil spring 75 is fixedly connected to the outside of the fixed rod; A movable cover 73 is fixedly mounted on the outside of the fixed rod, and the movable cover 73 is movably sleeved on the outside of the fixed cover 74; A finger rod 711 is fixedly mounted on the outside of the movable cover 73, a lug 712 is fixedly mounted on the periphery of the fixed cover 74, a second slide groove 713 is provided on the lug 712, a slider 714 is movably mounted inside the second slide groove 713, a threaded rod 717 is threadedly connected to the slider 714, a pressure plate 716 is movably sleeved on the outside of the threaded rod 717, and a limiting ring 715 for limiting the pressure plate 716 is fixedly mounted on the outside of the threaded rod 717; The round shaft 71 and the protrusion 72 are in an inclined state under the action of the coil spring 75 , and the round shaft 71 , the protrusion 72 , the movable cover 73 and the finger rod 711 are limited by the threaded rod 717 .

[0023] The round shaft 71 and the protrusion 72 are kept in an inclined state by the coil spring 75. Since the movable cover 73 is fixedly connected to the fixing rod, the threaded rod 717 is located inside the second slide groove 713 to limit the finger rod 711 and the inclination angle of the protrusion 72. During the sliding process of the sliding block 63 along the first slide groove 42, the protrusion 72 increases its sliding resistance to reduce the tension of the inclined cable body 3. When the sliding block 63 slides to one end close to the main tower 2, the inclined cable body 3 on the second clamping member 61 can be removed. Pushing the clamping assembly 6 to slide in the opposite direction will push the protrusion 72 and the round shaft 71 to rotate, so that the sliding block 63 can be reset normally. When the sliding block 63 is separated from the protrusion 72, the protrusion 72 is reset to an inclined state under the action of the coil spring 75. As the inclined cable body 3 on the bridge is continuously cut, the sliding block 63 rubs against the protrusion 72 for a long time, and the volume of the protrusion 72 gradually shrinks, pushing the finger rod 711, the movable cover 73, the fixed rod, the circular shaft 71 and the protrusion 72 to rotate, so that the protrusion 72 always keeps in contact with the bottom of the sliding block 63. At this time, rotating the threaded rod 717 can drive the slider 714 to slide up along the second slide groove 713 and contact the finger rod 711. Rotating the threaded rod 717 in the opposite direction can limit the finger rod 711.

[0024] The present invention also provides a method for cutting and constructing a stay cable with a fixing function, comprising the following steps: S1, the inclined cable body 3 is clamped by the support assembly 5 and the second clamping member 61, the cutting device is installed on the support assembly 5, and the inclined cable body 3 is cut by the cutting device; S2, after the cable body 3 breaks, the cable body 3 near the main tower 2 pulls the second clamping member 61, the second support frame 62 and the sliding block 63 to slide along the first sliding groove 42 under the action of its own tension and gravity; S3, since the end of the protrusion 72 contacts the bottom of the sliding block 63, the sliding resistance of the sliding block 63 is increased through the circular shaft 71 and the protrusion 72, so that the sliding block 63 carrying the end of the inclined cable body 3 slides slowly; S4. Since the support assembly 5 and the clamping assembly 6 are clamped on the outside of the inclined cable body 3, when the sliding block 63 slides along the first slide groove 42 to the end close to the main tower 2, it is connected to the inclined cable body 3 close to the end of the bridge deck body 1 through the support assembly 5, and the support assembly 5 is fixed to one end of the base assembly 4, so as to prevent the main beam 41 from tilting during the sliding of the sliding block 63 and the inclined cable body 3 close to the end of the main tower 2 along the first slide groove 42.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable-stayed cutting mechanism with a fixing function, comprising a bridge deck body (1) and a main tower (2), wherein a cable-stayed body (3) is connected between the bridge deck body (1) and the main tower (2), and characterized in that: Also includes: A base assembly (4), the base assembly (4) being fixed on the bridge deck body (1); A support assembly (5), the support assembly (5) being arranged on the top of the base assembly (4), and the support assembly (5) being used for installing a cutting device; A clamping assembly (6), wherein the clamping assembly (6) is arranged on the top of the base assembly (4), the support assembly (5) and the clamping assembly (6) are used to clamp the inclined cable body (3), and the cutting device is located between the support assembly (5) and the clamping assembly (6); A deceleration component (7), wherein the deceleration component (7) is arranged inside the base component (4); The clamping assembly (6) comprises two sliding blocks (63) sliding inside the base assembly (4); a baffle (65) is fixedly mounted on the bottom of the sliding block (63); a roller (66) is arranged between the baffle (65) and the sliding block (63); the two sliding blocks (63) are connected via a connecting plate (64); a second clamping member (61) is mounted on the top of the connecting plate (64) via a second support frame (62); The deceleration assembly (7) comprises a circular shaft (71) movably mounted inside the base assembly (4), a protrusion (72) is fixedly mounted outside the circular shaft (71), the top end of the protrusion (72) contacts the bottom end of the sliding block (63), and the protrusion (72) is made of rubber material; The cutting device is located between the support assembly (5) and the clamping assembly (6) to perform a cutting process on the inclined cable body (3); when the inclined cable body (3) is broken, the sliding block (63) is driven to slide toward one end along the base assembly (4) under the action of its own tension.

2. The inclined cable cutting mechanism with fixing function according to claim 1 is characterized in that: The base assembly (4) comprises a main beam (41) fixed to the top of the bridge deck body (1), and a first sliding groove (42) is provided inside the main beam (41); The sliding block (63) slides at the upper end inside the first sliding groove (42), and the round shaft (71) and the protrusion (72) are located at the lower end of the first sliding groove (42).

3. The inclined cable cutting mechanism with fixing function according to claim 2 is characterized in that: The protrusion (72) is inclined in the direction toward the main tower (2), and the direction in which the sliding block (63) slides along the first sliding groove (42) is consistent with the inclination direction of the protrusion (72).

4. The inclined cable cutting mechanism with fixing function according to claim 2 is characterized in that: The support assembly (5) comprises a docking plate (55) fixedly mounted on the main beam (41), and the docking plate (55) is movably mounted with a first clamping member (57) via a first support frame (56); The inner wall of the first clamping member (57) is provided with a rubber pad, and the second clamping member (61) has the same structure as the first clamping member (57).

5. The inclined cable cutting mechanism with fixing function according to claim 4 is characterized in that: The support assembly (5) further comprises a fixing frame (51) fixedly mounted on the side of the first clamping member (57), a guide rod (52) being arranged inside the fixing frame (51), a docking block (54) being slidably mounted on the guide rod (52), and a cutting device being mounted on the top of the docking block (54).

6. The inclined cable cutting mechanism with fixing function according to claim 5, characterized in that: When the sliding block (63) slides along the first sliding groove (42) to approach the support assembly (5), the fixing frame (51) is fixedly connected to the second clamping member (61) via the docking ear (53) with the aid of bolts, so that the fixing frame (51), the first clamping member (57), the second clamping member (61) and the inclined cable body (3) are in the same inclination direction.

7. The inclined cable cutting mechanism with fixing function according to claim 2 is characterized in that: The deceleration assembly (7) further comprises a fixing cover (74) fixedly mounted on the side of the main beam (41), a fixing rod being fixedly mounted on the side of the circular shaft (71), a coil spring (75) being fixedly mounted on the inner wall of the fixing cover (74), and the coil spring (75) being fixedly connected to the outside of the fixing rod; A movable cover (73) is fixedly mounted on the outside of the fixed rod, and the movable cover (73) is movably sleeved on the outside of the fixed cover (74).

8. The inclined cable cutting mechanism with fixing function according to claim 7 is characterized in that: The movable cover (73) is fixedly provided with a finger rod (711) on the outside, the fixed cover (74) is fixedly provided with a lug (712) on the outside, the lug (712) is provided with a second slide groove (713), a slider (714) is movably provided inside the second slide groove (713), a threaded rod (717) is threadedly connected to the slider (714), a pressure plate (716) is movably sleeved on the outside of the threaded rod (717), and a limiting ring (715) for limiting the pressure plate (716) is fixedly provided on the outside of the threaded rod (717); The round shaft (71) and the protrusion (72) are in an inclined state under the action of the coil spring (75), and the round shaft (71), the protrusion (72), the movable cover (73) and the finger rod (711) are limited in position by a threaded rod (717).

9. A method for cutting a stay cable with a fixing function, using the stay cable cutting mechanism with a fixing function as claimed in claim 1, characterized in that: The following steps are involved: S1. The inclined cable body (3) is clamped by the support assembly (5) and the second clamping member (61), a cutting device is installed on the support assembly (5), and the inclined cable body (3) is cut by the cutting device; S2, after the stay cable body (3) breaks, the stay cable body (3) near the end of the main tower (2) pulls the second clamping member (61), the second support frame (62) and the sliding block (63) to slide along the first sliding groove (42) under the action of its own tension and gravity; S3, since the end of the protrusion (72) contacts the bottom of the sliding block (63), the sliding resistance of the sliding block (63) is increased through the circular shaft (71) and the protrusion (72), so that the end of the sliding block (63) carrying the inclined cable body (3) slides slowly; S4. Since the support assembly (5) and the clamping assembly (6) are clamped on the outside of the inclined cable body (3), when the sliding block (63) slides along the first slide groove (42) to the end close to the main tower (2), it is connected to the inclined cable body (3) close to the end of the bridge deck body (1) through the support assembly (5), and the support assembly (5) is fixed to one end of the base assembly (4), so as to prevent the main beam (41) from tilting when the sliding block (63) and the inclined cable body (3) close to the end of the main tower (2) slide along the first slide groove (42).

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