An adjustable-angle multi-purpose bridge

Abstract

The present invention discloses an adjustable-angle multi-purpose bridge, belonging to the technical field of bridges. In the present invention, a first bridge section and a second bridge section are connected by a rotating part. The rotating part includes a fixed cylinder, and the side wall of the fixed cylinder is respectively provided with a first arc-shaped wire slot and a second arc-shaped wire slot; on both sides of one end of the second bridge section, a first arc-shaped clamping part and a second arc-shaped clamping part are respectively connected. The first arc-shaped clamping part is slidably clamped on one side wall of the fixed cylinder. When the included angle between the first bridge section and the second bridge section is adjusted from 180 degrees to 90 degrees, the second arc-shaped clamping part slides from being attached to and deformed on the side wall of the fixed cylinder to the side plate of the first bridge section; a clamping seat is installed on the fixed cylinder, and a wire combing mechanism is installed in the clamping seat. The wire combing mechanism rotates adaptively along with the adjustment of the included angle between the first bridge section and the second bridge section, realizing the adjustment of the bridge angle according to the installation scenario, without pre-setting, improving the installation application range, and at the same time avoiding the stacking of corner cables.

Description

Technical Field

[0001] The present invention relates to the technical field of cable trays, and particularly to an adjustable-angle multi-purpose cable tray. Background Art

[0002] When laying power transmission lines, especially for indoor line laying in factories, in order to increase the protection of the lines and reasonably plan the line layout, cable trays are usually used for line laying. The existing cable trays mainly consist of a U-shaped frame body and a cover plate. When encountering a line laying corner, a pre-set arc-shaped frame body and cover plate are usually used for lap joint. During the actual installation operation, it is found that due to the limitations of other pipelines or different wall structures in the factory building, the corner angles often deviate. Using the existing fixed-angle frame body for connection is likely to be affected by environmental factors, and pre-setting the corner frame body according to the on-site environment will increase production costs and affect the construction period; at the same time, the cables are prone to stacking and warping under stress when passing through the existing fixed-angle frame body.

[0003] To solve the above problems, the present invention proposes an adjustable-angle multi-purpose cable tray. Summary of the Invention

[0004] Aiming at the problems in the above technical background, the purpose of the present invention is to provide an adjustable-angle multi-purpose cable tray, which systematically solves the problems that the existing cable trays cannot adjust the corner angle according to the scene requirements during corner line laying and the cables are prone to stacking and warping at the corners.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] An adjustable-angle multi-purpose cable tray includes a first cable tray section and a second cable tray section both in a U shape. The first cable tray section and the second cable tray section are connected by a rotating part. The rotating part includes a fixed cylinder installed at one end of the first cable tray section. The fixed cylinder is respectively provided with a first arc-shaped wire slot communicating with the first cable tray section and a second arc-shaped wire slot communicating with the second cable tray section through the side wall. On both side plates at one end of the second cable tray section, a first arc-shaped clamping part and a second arc-shaped clamping part are respectively connected. The first arc-shaped clamping part is slidably clamped on one side wall of the fixed cylinder. When the included angle between the first cable tray section and the second cable tray section is adjusted from 180 degrees to 90 degrees, the second arc-shaped clamping part slides from being attached to and deformed on the side wall of the fixed cylinder to the side plate of the first cable tray section. A clamping seat is installed on the fixed cylinder, and a wire combing mechanism is installed in the clamping seat. The wire combing mechanism rotates adaptively along with the adjustment of the included angle between the first cable tray section and the second cable tray section. A first cover plate is clamped on the first cable tray section, and a second cover plate is clamped on the second cable tray section.

[0007] Further, the first arc-shaped wire slot is horizontally coincident with the wire slot of the first bridge section. At the same time, a second arc-shaped wire slot is provided on the fixed cylinder outside the connection end of the side plate of the first bridge section and the fixed cylinder. The central angle corresponding to the second arc-shaped wire slot is 180 degrees.

[0008] Furthermore, a T-shaped sliding slot is communicated between the side wall of the fixed cylinder at the end of the second arc-shaped wire slot close to the first bridge section and the side plate of the first bridge section. The narrow side of the T-shaped sliding slot opens outward. One end of the first arc-shaped clamping portion is inserted into the T-shaped sliding slot, and the other end of the first arc-shaped clamping portion is connected to the side plate on one side of one end of the second bridge section.

[0009] Furthermore, an arc-shaped sliding slot is provided on the side wall of the fixed cylinder at the end of the second arc-shaped wire slot far from the first bridge section. The second arc-shaped clamping portion includes an arc-shaped plate. An arc-shaped sliding rail inserted into the arc-shaped sliding slot is installed on the inner side of the arc-shaped plate. One end of the arc-shaped plate is connected to the side plate on the other side of one end of the second bridge section.

[0010] Furthermore, the first arc-shaped clamping portion includes a resilient clamping plate. A rubber insertion block is connected to the inner side surface of the resilient clamping plate. An anti-detachment block is connected to the inner side surface of the rubber insertion block. The rubber insertion block is inserted into the T-shaped sliding slot, and the anti-detachment block is inserted into the wide slot of the T-shaped sliding slot. One end of the resilient clamping plate is fixed to the side plate on one side of one end of the second bridge section by screws.

[0011] Furthermore, the first cover plate is U-shaped. First inner clamping blocks are symmetrically installed on the inner top of the first cover plate. A first straight row of clamping slots is formed between the first inner clamping block and one side plate of the first cover plate. The side plates on both sides of the first bridge section are respectively inserted into the first straight row of clamping slots on both sides. A plurality of fixing screws are symmetrically installed on the side plates of the first cover plate. At the same time, an anti-detachment limiting slot is provided on the inner side of one side plate of the first cover plate close to the movable end of the resilient clamping plate. When the first bridge section and the second bridge section are rotationally adjusted, the top of the other end of the resilient clamping plate slides in the anti-detachment limiting slot.

[0012] Furthermore, the resilient clamping plate is a high molecular polyethylene flame retardant plate, and the anti-detachment block is made of PVC material.

[0013] Further, the engaging seat includes a circular base seat. A convex column is concentrically installed on the top of the base seat. The top of the convex column is inserted into the fixed cylinder. A ring-shaped card slot is provided on the base seat outside the bottom end of the convex column. The bottom end of the fixed cylinder is inserted into the ring-shaped card slot. A threaded rod is installed on the convex column. A circular upper cover plate is inserted on the top of the fixed cylinder. The top end of the threaded rod passes through and is threadedly installed in the middle of the upper cover plate. At the same time, a nut is installed at the top end of the threaded rod. One end of the second cover plate is connected to one side wall of the top of the upper cover plate.

[0014] Furthermore, the second cover plate is U-shaped. Second inner clamping blocks are symmetrically installed on the inner top of the second cover plate. A second straight row of card slots is formed between the second inner clamping blocks and the second cover plate. The two second straight row of card slots are respectively clamped on the two side plates of the second bridge section. At the same time, the two side plates of the second cover plate are fixedly installed on the two side plates of the second bridge section through a plurality of screws.

[0015] Furthermore, the wire combing mechanism is rotatably installed on the threaded rod. The wire combing mechanism includes a sleeve, cross braces symmetrically installed on both sides of the top of the sleeve, and a plurality of wire combing strips evenly connected to the bottom of the cross braces. A plurality of arc-shaped follow-up limiting slots are symmetrically provided at the top of the convex column. The plurality of follow-up limiting slots are radially equidistantly arranged. At the same time, the corresponding central angle of the follow-up limiting slot is 45-50 degrees. The bottom end of the convex column is inserted into the follow-up limiting slot. When the included angle between the first bridge section and the second bridge section is 180 degrees, the cross brace is horizontally perpendicular to the first bridge section.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] In the present invention, the first bridge section and the second bridge section are connected by a rotating part. The rotating part includes a fixed cylinder installed at one end of the first bridge section. The fixed cylinder is provided with a first arc-shaped wire slot communicating with the first bridge section and a second arc-shaped wire slot communicating with the second bridge section through its side wall. On both sides of one end of the second bridge section, a first arc-shaped clamping part and a second arc-shaped clamping part are respectively connected. The first arc-shaped clamping part is slidably clamped on one side wall of the fixed cylinder. When the included angle between the first bridge section and the second bridge section is adjusted from 180 degrees to 90 degrees, the second arc-shaped clamping part slides from being attached to and deformed on the side wall of the fixed cylinder to the side plate of the first bridge section. A clamping seat is installed on the fixed cylinder, and a wire combing mechanism is installed in the clamping seat. The wire combing mechanism rotates adaptively along with the adjustment of the included angle between the first bridge section and the second bridge section. A first cover plate is clamped on the first bridge section, and a second cover plate is clamped on the second bridge section. By rotating the second bridge section to drive the first arc-shaped clamping part and the second arc-shaped clamping part on both sides to rotate, after the first arc-shaped clamping part rotates, it is deformed and inserted into the first bridge section, and the second arc-shaped clamping part covers the exposed second arc-shaped wire slot after sliding, thereby completing the rotation adjustment action. By controlling the widths of the first bridge section and the second bridge section, that is, reducing the circumferential angle occupied by the first bridge section and the second bridge section on the fixed cylinder, the rotation adjustment range can be increased. By setting the wire combing mechanism, it is realized that during the rotation process, the cable is bent and deformed under stress, and the wire combing mechanism can effectively comb it to prevent stacking. Finally, the corner adjustment of the bridge is realized according to the installation scenario without pre-setting, improving the installation application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional view of the bridge installation provided by the embodiment of the present invention Figure 1 ;

[0019] Figure 2 is a three-dimensional view of the bridge installation provided by the embodiment of the present invention Figure 2 ;

[0020] Figure 3 is a three-dimensional exploded view of the bridge and the cover plate provided by the embodiment of the present invention;

[0021] Figure 4 is a three-dimensional view of the cover plate and the upper cover plate provided by the embodiment of the present invention;

[0022] Figure 5 is a three-dimensional view of the bridge with the cover plate removed provided by the embodiment of the present invention;

[0023] Figure 6 is a three-dimensional view of the partial clamping seat and the wire combing mechanism after the cover plate is removed provided by the embodiment of the present invention;

[0024] Figure 7 is a three-dimensional exploded view of the clamping seat and the wire combing mechanism provided by the embodiment of the present invention;

[0025] Figure 8 The rotating parts provided by the embodiments of the present invention are respectively installed on the first bridge section and the second bridge section to separate the three-dimensional Figure 1 ;

[0026] Figure 9 The rotating parts provided by the embodiments of the present invention are respectively installed on the first bridge section and the second bridge section to separate the three-dimensional Figure 2 ;

[0027] Figure 10 It is a partially enlarged three-dimensional view of the T-shaped chute provided by the embodiments of the present invention.

[0028] In the figure: 1. The first bridge section; 101. The T-shaped chute; 2. The fixed cylinder; 3. The first arc-shaped wire slot; 4. The second arc-shaped wire slot; 5. The arc-shaped chute; 6. The second bridge section; 7. The arc-shaped plate; 71. The arc-shaped slide rail; 8. The resilient buckle plate; 9. The rubber insertion block; 10. The anti-detachment block; 11. The bottom support base; 12. The annular card slot; 13. The convex column; 131. The follow-rotation limit slot; 14. The threaded rod; 15. The nut; 16. The sleeve; 17. The cross brace; 18. The comb line; 19. The first cover plate; 191. The anti-detachment limit slot; 20. The first inner clamping block; 21. The first straight row of card slots; 22. The second cover plate; 23. The second inner clamping block; 24. The second straight row of card slots; 25. The upper cover plate. Detailed implementation manners

[0029] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present invention, and are not used to limit the present invention.

[0030] Embodiment 1

[0031] As Figures 1-10 shown, an adjustable-angle multi-purpose bridge includes a first bridge section 1 and a second bridge section 6 both in a U shape. The first bridge section 1 and the second bridge section 6 are connected by a rotating part. The rotating part includes a fixed cylinder 2 installed at one end of the first bridge section 1. The fixed cylinder 2 is respectively provided with a first arc-shaped wire slot 3 communicating with the first bridge section 1 and a second arc-shaped wire slot 4 communicating with the second bridge section 6 through the side wall; both side plates at one end of the second bridge section 6 are respectively connected with a first arc-shaped clamping part and a second arc-shaped clamping part. The first arc-shaped clamping part is slidably clamped on one side wall of the fixed cylinder 2. When the included angle between the first bridge section 1 and the second bridge section 6 is adjusted from 180 degrees to 90 degrees, the second arc-shaped clamping part slides from being attached and deformed on the side wall of the fixed cylinder 2 to the side plate of the first bridge section 1; a clamping seat is installed on the fixed cylinder 2, and a wire combing mechanism is installed in the clamping seat. The wire combing mechanism rotates adaptively along with the adjustment of the included angle between the first bridge section 1 and the second bridge section 6; a first cover plate 19 is clamped on the first bridge section 1, and a second cover plate 22 is clamped on the second bridge section 6.

[0032] Working principle: By rotating the second bridge section 6, the first arc-shaped clamping parts and the second arc-shaped clamping parts on both sides are driven to rotate. After the first arc-shaped clamping part rotates, it is deformed and inserted into the side plate of the first bridge section 1. After the second arc-shaped clamping part slides, it covers the exposed second arc-shaped wire trough 4, thus completing the rotation adjustment action. At the same time, it prevents the internal cables from being exposed, ensuring the airtight protection of the rotating part. By controlling the widths of the first bridge section 1 and the second bridge section 6, that is, reducing the circumferential angles occupied by the first bridge section 1 and the second bridge section 6 on the fixed cylinder 2, the rotation adjustment range can be increased; by setting up a wire combing mechanism, the cables are stressed and bent during rotation, and the wire combing mechanism can effectively comb them to prevent stacking, and finally realize the adjustment of the bridge angle according to the installation scenario.

[0033] As Figure 8 , 9 shown, the first arc-shaped wire trough 3 is horizontally coincident with the wire trough of the first bridge section 1. By installing the cables in the wire trough of the first bridge section 1 and passing through the first arc-shaped wire trough 3, and passing through the second arc-shaped wire trough 4 and installing them in the second bridge section 6, the wiring work is completed. At the same time, a second arc-shaped wire trough 4 is provided on the fixed cylinder 2 outside the connection end of one side plate of the first bridge section 1 and the fixed cylinder 2. The corresponding central angle of the second arc-shaped wire trough 4 is 180 degrees. By setting the arc length of the second arc-shaped wire trough 4 to account for a central angle of 180 degrees, the purpose of the cables passing through after rotation adjustment is met.

[0034] As Figure 6 , 7 As shown in Figures 8, a T-shaped chute 101 is provided in communication with the side wall of the fixed cylinder 2 near one end of the second arc-shaped wire trough 4 and the side plate of the first bridge section 1. The narrow side of the T-shaped chute 101 opens outward. One end of the first arc-shaped clamping part is inserted into the T-shaped chute 101. During rotation, the first arc-shaped clamping part is inserted into the outer side plate of the first bridge section 1, thereby increasing the rotation angle and avoiding a small rotation angle caused by rotation limitation. The other end of the first arc-shaped clamping part is connected to one side plate at one end of the second bridge section 6.

[0035] As shown in Figures 8 and 9, an arc-shaped chute 5 is provided on the side wall of the fixed cylinder 2 at the end of the second arc-shaped wire trough 4 away from the first bridge section 1. The second arc-shaped clamping part includes an arc-shaped plate 7. An arc-shaped slide rail 71 inserted into the arc-shaped chute 5 is installed inside the arc-shaped plate 7. One end of the arc-shaped plate 7 is connected to the other side plate at one end of the second bridge section 6. By setting the arc-shaped chute 5 and the arc-shaped slide rail 71, the rotation stability is increased.

[0036] As Figure 8 , 9As shown, the first arc-shaped clamping part includes a tough buckle plate 8, which has a bending function by setting the tough buckle plate 8, so that it can be changed from an arc shape to a straight shape and inserted into the T-shaped slide groove 101 during the rotation process. The inner side of the tough buckle plate 8 is connected with a rubber plug block 9. By adopting the rubber plug block 9, it has the function of deformation and stretching to avoid sliding limitation during deformation and sliding. The inner side of the rubber plug block 9 is connected with an anti-slip block 10, and the rubber plug block 9 is inserted into the T-shaped slide groove 101. The anti-slip block 10 is inserted into the wide groove of the T-shaped slide groove 101. One end of the tough buckle plate 8 is fixed to a side panel at one end of the second bridge frame section 6 by screws. The tough buckle plate 8 is a high molecular polyethylene flame retardant plate, and the anti-slip block 10 is made of PVC.

[0037] like Figure 3 , 4 As shown, the first cover plate 19 is U-shaped, and a first inner clamping block 20 is symmetrically installed on the top of the first cover plate 19. The first inner clamping block 20 can be set to a triangular or rectangular cross-section, which increases the clamping stability of the side plate of the first bridge frame section 1. Compared with the existing U-shaped cover plate, it has the advantage of not being easy to arch and deform after long-term use. A first straight clamping groove 21 is formed between the first inner clamping block 20 and a side plate of the first cover plate 19, and the two side plates of the first bridge frame section 1 are respectively inserted into the first straight clamping grooves 21 on both sides. A plurality of fixing screws are symmetrically installed on the two side plates of the first cover plate 19. At the same time, an anti-slip limit groove 18 is provided on the inner side of a side plate of the first cover plate 19 close to the movable end of the tough buckle plate 8, so that the installation is more stable. When the first bridge frame section 1 and the second bridge frame section 6 are rotated and adjusted, the top of the other end of the tough buckle plate 8 is located in the anti-slip limit groove 191 and slides. By setting the anti-slip limit groove 191, the sliding end of the tough buckle plate 8 is prevented from tilting during the sliding process, thereby increasing the sliding stability of the tough buckle plate 8 during rotation and sliding.

[0038] like Figure 5 , 6 As shown in , 7, the snap-fit ​​seat includes a circular base support seat 11, the base support seat 11 is made of stainless steel or aluminum plate, a raised column 13 is concentrically installed on the top of the base support seat 11, the top of the raised column 13 is inserted into the fixed tube 2, an annular groove 12 is provided on the base support seat 11 outside the bottom end of the raised column 13, the bottom end of the fixed tube 2 is inserted into the annular groove 12, a threaded rod 14 is installed on the raised column 13, a circular upper cover plate 25 is inserted on the top of the fixed tube 2, the top of the threaded rod 14 is threaded and installed in the middle of the upper cover plate 25, and a nut 15 is installed on the top of the threaded rod 14, and a side wall of the top of the upper cover plate 25 is connected to one end of the second cover plate 22, and the function of closing the upper and lower parts of the fixed tube 2 is achieved by tightening the nut 15.

[0039] like Figure 2 , 3As shown in Figure 4, the second cover plate 22 is U-shaped, and a second inner clamping block 23 is symmetrically installed on the top of the second cover plate 22. The second inner clamping block 23 can be set to a triangular or rectangular cross-section. The second inner clamping block 23 is provided to increase the clamping stability of the side plate of the first bridge frame segment 1, and avoid the second cover plate 22 from arching after long-term use. A second straight slot 24 is formed between the second inner clamping block 23 and the second cover plate 22, and the second straight slots 24 on both sides are respectively clamped on the two side plates of the second bridge frame segment 6. At the same time, the two side plates of the second cover plate 22 are fixed to the two side plates of the second bridge frame segment 6 by multiple screws, finally achieving the characteristics of stable installation and stable structure.

[0040] like Figure 5 , 6 As shown in Figures 7 and 8, a combing mechanism is rotatably mounted on the threaded rod 14, and the combing mechanism includes a sleeve 16, cross braces 17 symmetrically mounted on both sides of the top of the sleeve 16, and a plurality of combing lines 18 evenly connected to the bottom of the cross brace 17. During the rotation process, the cable is clamped between the combing lines 18. Due to the stress, the cable bends, and the bending drives the combing line 18 and the sleeve 16 to rotate, thereby preventing the cable from tilting and stacking. A plurality of arc-shaped rotation limiting grooves 131 are symmetrically arranged on the top of the raised column 13. By setting the rotation limiting grooves 131, the rotation of the combing line 18 is more stable and does not It will be skewed due to the stress of the cable, and multiple rotation limit grooves 131 are arranged radially at equal intervals. At the same time, the central angle of the rotation limit groove 131 is 45-50 degrees. The bottom end of the protruding column 13 is inserted into the rotation limit groove 131. When the angle between the first bridge frame section 1 and the second bridge frame section 6 is 180 degrees, the cross brace 17 is horizontally perpendicular to the first bridge frame section 1. When the angle between the first bridge frame section 1 and the second bridge frame section 6 is adjusted to 90 degrees, the combing mechanism is rotated 45 degrees due to the stress of the cable, and at the same time is subject to the isolation effect of the combing line 18, so that the cables are routed in parallel and will not be stacked.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An adjustable-angle multi-purpose bridge, comprising a first bridge section (1) and a second bridge section (6) both in a U shape, wherein the first bridge section (1) and the second bridge section (6) are connected by a rotating part, and it is characterized in that, The rotating part includes a fixed cylinder (2) installed at one end of the first bridge section (1). The fixed cylinder (2) is respectively provided with a first arc-shaped wire passing groove (3) communicating with the first bridge section (1) and a second arc-shaped wire passing groove (4) communicating with the second bridge section (6) through the side wall; On both side plates at one end of the second bridge section (6), a first arc-shaped clamping part and a second arc-shaped clamping part are respectively connected. The first arc-shaped clamping part is slidably clamped on one side wall of the fixed cylinder (2). When the included angle between the first bridge section (1) and the second bridge section (6) is adjusted from 180 degrees to 90 degrees, the second arc-shaped clamping part slides from being attached and deformed on the side wall of the fixed cylinder (2) to the side plate of the first bridge section (1); A clamping seat is installed on the fixed cylinder (2), and a wire combing mechanism is installed in the clamping seat. The wire combing mechanism rotates adaptively along with the adjustment of the included angle between the first bridge section (1) and the second bridge section (6); A first cover plate (19) is clamped on the first bridge section (1), and a second cover plate (22) is clamped on the second bridge section (6); The first arc-shaped wire passing groove (3) is horizontally coincident with the wire groove of the first bridge section (1). At the same time, a second arc-shaped wire passing groove (4) is provided on the fixed cylinder (2) outside the connection end of one side plate of the first bridge section (1) and the fixed cylinder (2). The central angle corresponding to the second arc-shaped wire passing groove (4) is 180 degrees; A T-shaped sliding groove (101) is communicated between the side wall of the fixed cylinder (2) near one end of the second arc-shaped wire passing groove (4) and the side plate of the first bridge section (1). The narrow side of the T-shaped sliding groove (101) opens outward. One end of the first arc-shaped clamping part is inserted into the T-shaped sliding groove (101), and the other end of the first arc-shaped clamping part is connected to one side plate at one end of the second bridge section (6).

2. The adjustable-angle multi-purpose bridge according to claim 1, characterized in that, An arc-shaped sliding groove (5) is provided on the side wall of the fixed cylinder (2) far from one end of the first bridge section (1) of the second arc-shaped wire passing groove (4). The second arc-shaped clamping part includes an arc-shaped plate (7). An arc-shaped sliding rail (71) inserted into the arc-shaped sliding groove (5) is installed on the inner side of the arc-shaped plate (7). One end of the arc-shaped plate (7) is connected to the other side plate at one end of the second bridge section (6).

3. The adjustable-angle multi-purpose bridge according to claim 1, characterized in that, The first arc-shaped clamping part includes a resilient clamping plate (8). A rubber insertion block (9) is connected to the inner side surface of the resilient clamping plate (8). An anti-detachment block (10) is connected to the inner side surface of the rubber insertion block (9). The rubber insertion block (9) is inserted into the T-shaped sliding groove (101), and the anti-detachment block (10) is inserted into the wide groove of the T-shaped sliding groove (101). One end of the resilient clamping plate (8) is fixed to one side plate at one end of the second bridge section (6) by screws.

4. The adjustable-angle multi-purpose bridge according to claim 3, characterized in that, The first cover plate (19) is U-shaped. First inner clamping blocks (20) are symmetrically installed on the inner top of the first cover plate (19). A first straight row of clamping grooves (21) is formed between the first inner clamping blocks (20) and one side plate of the first cover plate (19). Two side plates of the first bridge section (1) are respectively inserted into the two first straight row of clamping grooves (21) on both sides. A plurality of fixing screws are symmetrically installed on the two side plates of the first cover plate (19). At the same time, an anti-disengagement limiting groove (191) is provided on the inner side of one side plate of the first cover plate (19) close to the movable end of the resilient clamping plate (8). When the first bridge section (1) and the second bridge section (6) are rotationally adjusted, the top of the other end of the resilient clamping plate (8) slides within the anti-disengagement limiting groove (191).

5. The adjustable-angle multi-purpose bridge according to claim 3, characterized in that, The resilient clamping plate (8) is a high molecular polyethylene flame retardant plate, and the anti-disengagement block (10) is made of PVC material.

6. The adjustable-angle multi-purpose bridge according to claim 1, characterized in that, The clamping seat includes a circular bottom support seat (11). A raised column (13) is concentrically installed on the top of the bottom support seat (11). The top of the raised column (13) is inserted into the fixed cylinder (2). A ring-shaped clamping groove (12) is provided on the bottom support seat (11) outside the bottom end of the raised column (13). The bottom end of the fixed cylinder (2) is inserted into the ring-shaped clamping groove (12). A threaded rod (14) is installed on the raised column (13). A circular upper cover plate (25) is inserted on the top of the fixed cylinder (2). The top end of the threaded rod (14) passes through and is threadedly installed in the middle of the upper cover plate (25). At the same time, a nut (15) is installed at the top end of the threaded rod (14). One end of the second cover plate (22) is connected to one side wall of the top of the upper cover plate (25).

7. The adjustable-angle multi-purpose bridge according to claim 6, characterized in that, The second cover plate (22) is U-shaped. Second inner clamping blocks (23) are symmetrically installed on the inner top of the second cover plate (22). A second straight row of clamping grooves (24) is formed between the second inner clamping blocks (23) and the second cover plate (22). The two second straight row of clamping grooves (24) on both sides are respectively clamped on the two side plates of the second bridge section (6). At the same time, the two side plates of the second cover plate (22) are fixedly installed on the two side plates of the second bridge section (6) through a plurality of screws.

8. The adjustable-angle multi-purpose bridge according to claim 6, characterized in that, The threading mechanism is rotatably installed on the threaded rod (14). The threading mechanism includes a sleeve (16), cross braces (17) symmetrically installed on both sides of the top of the sleeve (16), and a plurality of threading strips (18) evenly connected to the bottom of the cross braces (17). A plurality of arc-shaped rotation-following limiting grooves (131) are symmetrically provided on the top of the raised column (13). The plurality of rotation-following limiting grooves (131) are equidistantly arranged radially. At the same time, the central angle corresponding to the rotation-following limiting grooves (131) is 45 - 50 degrees. The bottom end of the raised column (13) is inserted into the rotation-following limiting grooves (131). When the included angle between the first bridge section (1) and the second bridge section (6) is 180 degrees, the cross braces (17) are horizontally perpendicular to the first bridge section (1).

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