Connecting mechanism for connecting midspan cantilever ends of double-wing horizontal rotating steel bridge

Abstract

The utility model relates to the technical field of bridges, and particularly discloses a connecting mechanism for connecting midspan cantilever ends of a double-wing horizontal rotating steel bridge, which comprises an upper connecting device and a lower connecting device, the upper connecting device comprises two groups of upper connecting pieces; the lower connecting device comprises two groups of lower connecting pieces; the upper connecting piece comprises an upper plug pin assembly which is arranged on an upper chord of the first bridge and extends into the end, close to the first bridge, of the second bridge, and an upper vertical adjusting assembly which is arranged on the second bridge and abuts against the upper plug pin assembly in a matched mode, and the lower connecting piece comprises a lower plug pin assembly which is arranged on a lower chord of the second bridge and extends into the end, close to the second bridge, of the first bridge. The lower vertical adjusting assembly is arranged on the first bridge and matched with the lower plug pin assembly in an abutting mode. According to the utility model, folding connection can be still realized when the bridge floors of the two-span bridge have a height difference; and the upper vertical adjusting assembly and the lower vertical adjusting assembly can transmit vertical loads, and the situation that the upper plug pin assembly and the lower plug pin assembly deform is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, and more specifically to a connection mechanism for connecting cantilever ends in the mid-span of a double-wing horizontal rotation steel bridge. Background Art

[0002] In the prior art, the vertical adjustment of the cantilever ends of two adjacent spans of bridges is considered separately. Usually, a latch is only provided on the cantilever section of one bridge, and a socket for matching with the latch is provided on the other span of bridge, and limit stop wheels are provided on the upper and lower sides of the socket respectively.

[0003] When there is a height difference between the pin and one side of the socket, the pin and the socket can only be forced together by the arc of the pin and the stopper wheel until the pin and the socket are aligned.

[0004] This method has the following disadvantages:

[0005] 1. The latch is frequently subjected to vertical force and is subject to friction and wear with the retaining wheel for a long time, which can easily cause the latch to deform and the friction surface to wear.

[0006] 2. The hard-holding method allows the overall height difference of the bridge to be adjusted through the receiving force of the latch and the stop wheel, which increases the resistance to the extension and retraction of the latch, making it easy for the latch to get stuck and unable to be pulled out, and the drive device of the latch is prone to overload, making it more susceptible to damage. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a connection mechanism for connecting the cantilever ends in the mid-span of a double-wing horizontal rotation steel bridge;

[0008] The solution adopted by the utility model to solve the technical problem is:

[0009] A connecting mechanism for connecting the cantilever ends in the mid-span of a double-wing horizontal rotation steel bridge, used for connecting adjacent bridges one and two close to each other at one end; comprising an upper connecting device and a lower connecting device symmetrically arranged along the bridge direction;

[0010] The upper connecting device comprises two groups of upper connecting members symmetrically arranged along the bridge direction; the lower connecting device comprises two groups of lower connecting members symmetrically arranged along the bridge direction;

[0011] The upper connecting member includes an upper latch assembly arranged on the upper chord of the first bridge and extending into the second bridge near the end of the first bridge, and an upper vertical adjustment assembly arranged on the second bridge and abutting against the upper latch assembly;

[0012] The lower connecting member includes a lower latch assembly arranged on the lower chord of the bridge 2 and extending into the end of the bridge 1 close to the bridge 2, and a lower vertical adjustment assembly arranged on the bridge 1 and abutting against the lower latch assembly;

[0013] The upper vertical adjustment component is hingedly connected to the first bridge, and the lower vertical adjustment component is hingedly connected to the second bridge.

[0014] The utility model provides an upper latch assembly, an upper vertical adjustment assembly used in conjunction with the upper latch assembly, a lower latch assembly, and a lower vertical adjustment assembly used in conjunction with the lower latch assembly on two adjacent spans of a bridge 1 and a bridge 2; thereby effectively realizing the connection between the two adjacent spans of a bridge 1 and a bridge 2; through the provision of the upper vertical adjustment assembly and the lower vertical adjustment assembly, the bridge 1 and the bridge 2 can be vertically aligned, thereby making the bridge decks of the two spans always at the same elevation; after being connected in place, the upper latch assembly will abut and cooperate with the upper vertical adjustment assembly, and the lower latch assembly will abut and cooperate with the lower vertical adjustment assembly, thereby ensuring that during the passage of a train, the upper latch assembly and the upper vertical adjustment assembly, and the lower latch assembly will contact with the lower vertical adjustment assembly to bear the vertical load but not the component force; thereby ensuring that the vertical load can be accepted during passage and deformation can be avoided.

[0015] In some possible implementations, in order to effectively realize the connection between the upper latch assembly and the lower latch assembly, the upper latch assembly and the lower latch assembly can effectively realize the connection between the two spans of the bridge;

[0016] The upper latch assembly has the same structure as the lower latch assembly;

[0017] It comprises a telescopic driving member telescopically extending along the bridge direction, a pin body hinged to the telescopic section of the telescopic driving member and arranged along the bridge direction, and a socket used in conjunction with the pin body.

[0018] In some possible implementations, in order to effectively limit the displacement of the pin body during the movement along the longitudinal direction of the bridge and prevent the pin body from being displaced in the transverse direction of the bridge, the pin body can be smoothly inserted into the insertion hole;

[0019] The upper latch assembly or the lower latch assembly also includes two groups of transverse bridge limiters arranged in the insertion hole and close to each other on one side to form a guide groove; the two groups of transverse bridge limiters are on the same horizontal plane, and the inner side surface of the guide groove contacts the outer side surface of the pin body.

[0020] In some possible implementations, in order to reduce the friction between the transverse stopper and the pin body and avoid the pin body from being stuck;

[0021] The transverse bridge limiter includes a side baffle installed in the insertion hole and in contact with the outer side of the pin body, and a roller installed on the side of the side baffle close to the upper vertical adjustment component or the lower vertical adjustment component and rotating vertically;

[0022] The roller is close to one side of the pin body and is on the same plane as the side baffle plate close to the pin body.

[0023] In some possible implementations,

[0024] The side baffle includes an installation section for installing the roller, and a guide section arranged at one end of the installation section away from the roller; the guide section has an arc-shaped structure on the side close to the pin body and contacts and cooperates with the pin body, and a gap is formed between the side of the installation section close to the pin body and the pin body.

[0025] In some possible implementations, in order to effectively support and guide the pin body;

[0026] The upper latch assembly or the lower latch assembly also includes a support ring sleeved on the outside of the pin body.

[0027] In some possible implementations, in order to effectively use the upper vertical adjustment assembly or the lower vertical adjustment assembly to adjust the height difference between the two spans of the bridge, the pin body can be smoothly inserted into the socket to achieve the connection of the two spans of the bridge;

[0028] The upper vertical adjustment assembly has the same structure as the lower vertical adjustment assembly;

[0029] It includes a hydraulic adjustment cylinder which is hinged to the first bridge or the second bridge and rotates around the transverse bridge direction, and a contact abutment member which is hinged to the telescopic section of the hydraulic adjustment cylinder and hinged to the first bridge or the second bridge;

[0030] The hydraulic adjustment cylinder and the contact abutment member are located below the upper latch assembly or the lower latch assembly.

[0031] In some possible implementations,

[0032] The lower vertical adjustment assembly also includes a limiting wheel which is arranged above the lower latch assembly and abuts against the lower latch assembly.

[0033] In some possible implementations,

[0034] The contact abutment member comprises a bracket hinged to the first bridge or the second bridge and rotating around the transverse bridge direction, and a crank arm hinged to the bracket and equipped with a supporting wheel; the crank arm is hinged to the telescopic section of the hydraulic adjustment cylinder;

[0035] After the bridge 1 and the bridge 2 are connected in place, the support wheel abuts against the bottom of the upper latch assembly or the lower latch assembly, and the bottom of the limiting wheel abuts against the top of the lower latch assembly;

[0036] After the connection between bridge one and bridge two is completed, the axis of the support wheel along the transverse direction of the bridge, the hinge point between the crank arm and the bracket, and the hinge point between the bracket and bridge one or bridge two are on the same vertical plane.

[0037] In some possible implementations,

[0038] A limit stopper abutting against the crank arm is also provided on the bridge 1 or the bridge 2; the limit stopper is provided on a side of the crank arm away from the hydraulic adjustment cylinder;

[0039] After the bridge one and the bridge two are connected in place, the crank arm and the limit stop block come into contact with each other.

[0040] Compared with the prior art, the utility model has the following beneficial effects:

[0041] The utility model can realize the closing connection when there is a height difference between the bridge decks of the two spans by arranging the upper latch assembly, the upper vertical adjustment assembly, the lower latch assembly and the lower vertical adjustment assembly; at the same time, after the connection of the two adjacent spans is completed, the upper vertical adjustment assembly and the lower vertical adjustment assembly can also transfer the vertical load to avoid deformation of the upper latch assembly and the lower latch assembly;

[0042] The utility model has the advantages of simple structure and strong usability. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the connection relationship between the utility model and bridge one and bridge two;

[0044] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0045] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0046] Figure 4 It is a structural schematic diagram of the upper vertical adjustment component of the utility model;

[0047] Figure 5 It is a top view of the utility model and bridge 1 and bridge 2;

[0048] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0049] Figure 7 It is a structural schematic diagram of the transverse bridge limiter in the utility model;

[0050] Figure 8 This is a state diagram of the support wheel in the upper vertical drive assembly of the utility model from the lowest position to the highest position;

[0051] Fig. 9 It is a three-dimensional structural schematic diagram of the utility model and bridge 1 and bridge 2;

[0052] Among them: 100, bridge one; 200, bridge two; 10, upper connecting part; 20, lower connecting part; 1, upper latch assembly; 2, upper vertical adjustment assembly; 3, lower latch assembly; 31, telescopic drive member; 32, pin body; 33, socket; 34, transverse bridge limiter; 341, side baffle; 3411, installation section; 3412, guide section; 342, roller; 35, support ring; 4, lower vertical adjustment assembly; 41, hydraulic adjustment cylinder; 42, contact abutment; 421, bracket; 422, crank arm; 4221, pad; 423, support wheel; 43, limit wheel; 44, limit block; 45, shell; 451, slide. DETAILED DESCRIPTION

[0053] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity limit, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can indicate: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0054] The utility model is described in detail below.

[0055] like Figure 1-Figure 9 As shown:

[0056] A connecting mechanism for connecting the cantilever ends in the mid-span of a double-wing horizontal rotation steel bridge, used for connecting adjacent bridges 100 and 200 close to one end (cantilever end) of each other; comprising an upper connecting device and a lower connecting device symmetrically arranged along the bridge direction;

[0057] The upper connecting device comprises two groups of upper connecting members 10 symmetrically arranged along the bridge direction; the upper connecting device comprises two groups of lower connecting members 20 symmetrically arranged along the bridge direction;

[0058] like Figure 1As shown, the upper connecting member 10 includes an upper latch assembly 1 disposed on the upper chord of the bridge 100 and extending into the bridge 200 close to one end of the bridge 100, and an upper vertical adjustment assembly 2 disposed on the bridge 200 and abutting against the upper latch assembly 1;

[0059] The lower connecting member 20 includes a lower latch assembly 3 disposed on the lower chord of the second bridge 200 and extending into the first bridge 100 near one end of the second bridge 200, and a lower vertical adjustment assembly 4 disposed on the first bridge 100 and abutting against the lower latch assembly 3;

[0060] The upper vertical adjustment component 2 is hingedly connected to the bridge 100 , and the lower vertical adjustment component 4 is hingedly connected to the bridge 2 200 .

[0061] The utility model provides an upper latch assembly 1 on two adjacent spans of a bridge 100 and a bridge 200, and uses an upper vertical adjustment assembly 2, a lower latch assembly 3, and a lower vertical adjustment assembly 4 used in conjunction with the upper latch assembly 1, thereby effectively achieving the connection between the two adjacent spans of the bridge 100 and the bridge 200; through the provision of the upper vertical adjustment assembly 2 and the lower vertical adjustment assembly 4, the adjustment of the bridge 100 or the bridge 200 is achieved, and finally the bridge 100 and the bridge 2 are connected. 200 can achieve vertical alignment, so that the bridge deck of the two-span bridge is always at the same elevation; after being connected in place, the upper latch assembly 1 will abut and cooperate with the upper vertical adjustment assembly 2, and the lower latch assembly 3 will abut and cooperate with the lower vertical adjustment assembly 4, ensuring that the upper latch assembly 1 and the upper vertical adjustment assembly 2, and the lower latch assembly 3 and the lower vertical adjustment assembly 4 can contact and bear the vertical load without bearing the component force during the passage of the train; thereby ensuring that the vertical load can be accepted during the passage, and the deformation of the upper latch assembly 1 and the lower latch assembly 3 is avoided;

[0062] The upper latch assembly 1 and the lower vertical adjustment assembly 4 are arranged on the same span bridge. Figure 1 The lower latch assembly 3 and the upper vertical adjustment assembly 2 are arranged on another span bridge, as shown in FIG. Figure 1 As shown, it is arranged on bridge 200.

[0063] Under the condition that bridge one 100 is higher than bridge two 200, when connecting, the upper latch assembly 1 moves toward the side of bridge two 200 and moves to the top of the upper vertical adjustment assembly 2. Since bridge one 100 is higher than bridge two 200, when the top of the upper vertical adjustment assembly 2 moves to the highest position, it still cannot contact and cooperate with the bottom of the upper latch assembly 1. At this time, the lower latch assembly 3 moves toward bridge one 100 to adjust the lower vertical adjustment assembly 4. When the lower vertical adjustment assembly 4 is not adjusted to the highest position, it abuts against the bottom of the lower latch assembly 3 and continuously adjusts the lower vertical adjustment assembly 4, thereby lifting bridge two 200 and making the top of the upper vertical adjustment assembly 2 move to the highest position to contact and cooperate with the bottom of the upper latch assembly 1, thereby connecting bridge one 100 with bridge two 200.

[0064] Under the condition that bridge one 100 is lower than bridge two 200, when connecting, the upper latch assembly 1 moves toward the side of bridge two 200, controlling the upper vertical adjustment assembly 2 to move to the highest position, but when it has not moved to the highest position, it will contact the bottom of the upper latch assembly 1; the upper vertical adjustment assembly 2 continues to move, and will lift the upper latch assembly 1 and bridge one 100, and will no longer lift after moving to the highest position; after lifting, the bridge decks of the two spans are at the same elevation, and then the lower latch assembly 3 is controlled to be inserted into bridge one 100, and after extending to the working position, the lower vertical adjustment assembly 4 can be started to move and move to the highest position, at which time the lower latch assembly 3 will abut against the lower vertical adjustment assembly 4, so that the lower latch assembly 3 is stuck.

[0065] In some possible implementations, in order to effectively realize the connection between the upper latch assembly 1 and the lower latch assembly 3, the upper latch assembly 1 and the lower latch assembly 3 can effectively realize the connection between the two spans of the bridge;

[0066] The upper latch assembly 1 and the lower latch assembly 3 have the same structure;

[0067] It includes a telescopic driving member 31 that is telescopic along the bridge direction, a pin body 32 that is hinged to the telescopic section of the telescopic driving member 31 and arranged along the bridge direction, and a socket 33 that is used in conjunction with the pin body 32.

[0068] The telescopic driving member 31 is a hydraulic cylinder, one end of which is hinged to the bridge 100 or the bridge 200, and the telescopic section is arranged along the bridge direction and connected to the end of the pin body 32 away from the insertion hole 33. The telescopic section is telescoped along the bridge direction, so that the pin body 32 can move along the bridge direction and extend into the corresponding insertion hole 33;

[0069] The upper latch assembly 1 and the lower latch assembly 3 do not bear axial force, but only transmit vertical shear force, and transmit the vertical shear force to the upper vertical adjustment assembly 2 or the lower vertical adjustment assembly 4;

[0070] Furthermore, the pin body 32 is made of 34CrNiMo6V and is forged into a rectangular cross section; one end of the pin body 32 close to the insertion hole 33 adopts a wedge-shaped variable cross section to ensure that the pin body 32 can correct itself up and down when partially interfering with the stop wheel during the telescopic process.

[0071] In some possible implementations, in order to effectively limit the displacement of the pin body 32 during the movement along the longitudinal direction of the bridge and prevent the pin body 32 from being displaced in the transverse direction of the bridge, the pin body 32 can be smoothly inserted into the insertion hole 33;

[0072] The upper latch assembly 1 or the lower latch assembly 3 further comprises two groups of transverse bridge limiters 34 arranged in the insertion hole 33 and close to each other on one side to form a guide groove; the two groups of transverse bridge limiters 34 are on the same horizontal plane, and after the pin body 32 extends into the insertion hole 33, the inner side surface of the guide groove contacts the outer side surface of the pin body 32;

[0073] In order to reduce the friction between the transverse limiter and the pin body 32 and avoid the pin body 32 from being stuck, the transverse limiter 34 includes a side baffle 341 installed in the insertion hole 33 and in contact with the outer side of the pin body 32, and a roller 342 installed on the side of the side baffle 341 close to the upper vertical adjustment component 2 or the lower vertical adjustment component 4 and rotating vertically.

[0074] The roller 342 is close to the pin body 32 and is on the same plane as the side baffle 341 close to the pin body 32;

[0075] like Figure 7 As shown, the side baffle 341 includes a mounting section 3411 for mounting the roller 342, and a guide section 3412 arranged at one end of the mounting section 3411 away from the roller 342; the guide section 3412 has an arc-shaped structure on one side close to the pin body 32 and contacts and cooperates with the pin body 32, and a gap is formed between the mounting section 3411 and the pin body 32 on one side close to the pin body 32; the arc-shaped structure is an outward convex arc;

[0076] The cross section of the insertion hole 33 is a rectangular structure, and its axial direction is arranged along the bridge direction, wherein the side baffles 341 are arranged on two side surfaces of the insertion hole 33 and parallel to the outer sides of the bridge 100 or the bridge 200; the side of the pin body 32 away from the telescopic driving member 31 will pass through the guide groove formed by the two groups of side baffles 341 under the drive of the telescopic driving member 31; the side of the pin body 32 will slide with the two groups of side baffles 341, and the contact area between the side baffles 341 and the pin body 32 will be effectively reduced through the guide section 3412, so that the friction force generated between the two is smaller, and the setting of the roller 342 will make the sliding of the pin body 32 and the side baffles 341 more convenient; the side of the side baffles 341 on both sides close to each other are in contact with the outer side surface of the pin body 32, thereby effectively preventing the pin body 32 from deflecting, and can effectively guide the pin body 32 so that it can only move in a straight line along the bridge direction;

[0077] In some possible implementations, in order to effectively support and guide the pin body 32;

[0078] The upper latch assembly 1 or the lower latch assembly 3 further includes a support ring 35 sleeved on the outside of the pin body 32; the support ring 35 is arranged in groups along the axial direction of the pin body 32;

[0079] The support ring 35 is used to support and guide the pin body 32 so that it can smoothly enter the corresponding insertion hole 33;

[0080] In some possible implementations, in order to effectively use the upper vertical adjustment assembly 2 or the lower vertical adjustment assembly 4 to adjust the height difference between the two spans of the bridge (bridge 1 100 and bridge 2 200), the pin body 32 can be smoothly inserted into the insertion hole 33 to achieve the connection of the two spans of the bridge;

[0081] The upper vertical adjustment assembly 2 and the lower vertical adjustment assembly 4 have the same structure;

[0082] like Figure 4 As shown, it includes a hydraulic adjustment cylinder 41 which is hinged to the bridge 1 100 or the bridge 2 200 and rotates around the transverse bridge direction, and a contact abutment member 42 which is hinged to the telescopic section of the hydraulic adjustment cylinder 41 and hinged to the bridge 1 100 or the bridge 2 200;

[0083] The hydraulic adjustment cylinder 41 and the contact abutment member 42 are located below the upper latch assembly 1 or the lower latch assembly 3;

[0084] By hydraulically adjusting the extension of the telescopic section of the oil cylinder 41, the contact abutment member 42 moves toward the side close to the pin body 32, and when the bridge 100 and the bridge 200 are connected, the top surface of the contact abutment member 42 contacts and abuts against the bottom surface of the corresponding pin body 32;

[0085] When the telescopic section is in the retracted state, the top surface of the contact abutment member 42 is at the lowest position; when the telescopic section is in the longest extended position, the top surface of the contact abutment member 42 is at the highest position.

[0086] In some possible implementations,

[0087] The lower vertical adjustment assembly 4 also includes a limiting wheel 43 which is arranged above the lower latch assembly 3 and abuts against the lower latch assembly 3;

[0088] like Figure 4 As shown, the contact abutment member 42 comprises a bracket 421 hinged to the bridge 1 100 or the bridge 2 200 and rotating around the transverse bridge direction, and a crank arm 422 hinged to the bracket 421 and equipped with a support wheel 423; the crank arm 422 is hinged to the telescopic section of the hydraulic adjustment cylinder 41; the axis of the support wheel 423 is arranged along the transverse bridge direction and rotates with the crank arm 422;

[0089] After the bridge 100 and the bridge 200 are connected in place, the support wheel 423 abuts against the bottom of the pin body 32 of the upper latch assembly 1 or the lower latch assembly 3, and the bottom of the limiting wheel 43 abuts against the top of the pin body 32 of the lower latch assembly 3;

[0090] After the connection between bridge 100 and bridge 200 is completed, the axis of the support wheel 423 along the transverse direction of the bridge, the hinge point between the crank arm 422 and the bracket 421, and the hinge point between the bracket 421 and bridge 100 or bridge 200 are on the same vertical plane.

[0091] Specifically, the bracket 421 is provided with a rotating shaft hinged to the bridge 100 or the bridge 200 and arranged along the transverse direction of the bridge, a transition shaft hinged to the crank arm 422 and arranged along the transverse direction of the bridge, and a rotating shaft hinged to the telescopic section and arranged along the transverse direction of the bridge; the crank arm 422 and the bracket 421 are rotated around the transition shaft, the support wheel 423 and the crank arm 422 are rotated around the axis of the support wheel, and the bracket 421 and the bridge 100 or the bridge 200 are rotated around the rotating shaft;

[0092] After the bridge 100 and the bridge 200 are connected in place, the axes of the rotating shaft, the transition shaft, and the supporting wheel 423 are in the same vertical plane; the supporting wheel 423 is provided with a transverse bridge direction rotating rod that cooperates with the crank arm 422 for rotation along the transverse bridge direction, and a vertically arranged slide groove 451 is provided on the bridge 100 or the bridge 200, and one end of the transverse bridge direction rotating rod is located in the slide groove 451; Fig. 9As shown, a housing 45 is further provided on the outer side of the upper vertical adjustment component 2 and the lower vertical adjustment component 4, and a slide groove 451 is also provided on the housing 45 along the vertical direction, and the other end of the horizontal bridge rotating rod is located in the slide groove 451; by providing two sets of slide grooves 451, the movement direction of the support wheel 423 is effectively guided so that it can only move in a straight line along the vertical direction;

[0093] like Figure 8 As shown, the support wheel 423 in the upper vertical adjustment component 2 is in the lowest position, and the telescopic section of the hydraulic adjustment oil cylinder 41 extends to the side of the bridge 100, so that the bracket 421 rotates clockwise around the hinge point between the bracket 421 and the bridge 200, thereby making the crank arm 422 move clockwise, and making the transition shaft move upward in the clockwise direction. Due to the setting of the slide groove 451, the support wheel 423 is driven to move vertically upward. When the top of the support wheel 423 contacts the bottom of the pin body 32 of the upper latch assembly 1, the axes of the rotating shaft, the transition shaft, and the support wheel 423 are in the same vertical plane;

[0094] like Figure 1 , Figure 3 As shown: the distance between the pin body 32 in the upper latch assembly 1 and the bridge deck corresponding to the bridge 100 is H1, and the distance between the support wheel 423 in the upper vertical adjustment assembly 2 and the bridge deck corresponding to the bridge 200 is H2;

[0095] Driven by the telescopic cylinder, when the support wheel 423 in the lower vertical adjustment assembly 4 is in the highest position, the distance between the top surface of the support wheel 423 and the bridge deck of bridge 100 is L1, the distance between the bottom surface of the lower latch assembly 3 and the bridge deck of bridge 200 is L2, the distance between the top surface of the support wheel 423 and the corresponding limiting wheel 43 is L3, and the vertical height of the pin body 32 is L4; when the two-span bridge is connected, H1=H2, L1=L2, L3=L4.

[0096] Specifically, in the non-working state, the telescopic section of the hydraulic adjustment cylinder 41 is in a retracted state, and the support wheel 423 is in the lowest position at this time, thereby ensuring that no matter what the height difference between the cantilever ends on the bridge 100 and the bridge 200 is, the pin bodies 32 in the upper latch assembly 1 and the lower latch assembly 3 can be freely extended to the corresponding sockets 33; when the axes of the bridge 100 and the bridge 200 are aligned and the vertical elevation of the bridge deck needs to be adjusted to be consistent, the pin bodies 32 of the upper latch assembly 1 or the lower latch assembly 3 are controlled to move and extend into the sockets 33 of the opposite bridge;

[0097] If the bridge (bridge one 100) on which the upper latch assembly 1 is installed is higher than another span of the bridge (bridge two 200), first, the pin body 32 of the upper latch assembly 1 is moved toward the socket 33 provided on the bridge two 200, and the hydraulic adjustment cylinder 41 in the upper vertical adjustment assembly 2 is actuated to push the support wheel 423 up to the highest position. However, the upper surface of the support wheel 423 still cannot contact the upper latch assembly 1 and the lower surface of the pin body 32. In this case, the positions of the upper latch assembly 1 and the upper vertical adjustment assembly 2 are kept unchanged. Then, the lower latch is operated. The pin body 32 in the assembly 3 moves and extends into the corresponding socket 33 of the bridge 100; after the pin body 32 extends to the working position, the hydraulic adjustment cylinder 41 in the lower vertical adjustment assembly 4 can be controlled to move, and the support wheel 423 in the lower vertical adjustment assembly 4 will contact the lower surface of the lower latch assembly 3. However, at this time, the support wheel 423 in the lower vertical adjustment assembly 4 has not moved to the highest position; continue to control the hydraulic adjustment cylinder 41 to move, so that the support wheel 423 moves to the highest position. Due to the drive of the lower vertical adjustment assembly 4, The bridge with the upper vertical adjustment component 2 installed will move downward, and the pin body 32 of the lower latch assembly 3 will be exactly between the support wheel 423 and the limit wheel 43 of the lower vertical adjustment component 4, and the pin body 32 will be stuck by the support wheel 423 and the limit wheel 43, and the support wheel 423 of the upper vertical adjustment component 2 will contact and abut the bottom of the pin body 32 of the upper latch assembly 1, and at this time it just meets: H1+L1=H2+L2; thereby ensuring that the bridge decks of the two spans are at the same elevation; and the pin body 32 in the upper latch assembly 1 and the lower latch assembly 3 are The pin bodies 32 in the assembly 3 are all in contact with the corresponding support wheels 423; at this time, the rotating shaft, the transition shaft, and the center of the support wheel 423 are on the same vertical line, thereby ensuring that during the passage of the train, the upper latch assembly 1, the lower latch assembly 3, and the support wheel 423 can be in contact to withstand the vertical load, and the hydraulic adjustment cylinder 41 does not bear the component force during the passage of the train; the upper latch assembly 1 only needs to ensure the vertical impact load when the train passes, so a stop wheel is not set in the upper vertical adjustment assembly 2 to clamp the pin body 32 of the upper latch assembly 1.

[0098] If the bridge (bridge one 100) with the upper latch assembly 1 installed is lower than the other span bridge (bridge two 200), the hydraulic adjustment cylinder 41 in the upper vertical adjustment assembly 2 is activated, and the corresponding support wheel 423 is pushed to the highest position. The upper surface of the support wheel 423 will contact the lower surface of the latch in advance, and lift the opposite bridge as a whole until the support wheel 423 is at the highest position. At this time, H1=H2 is satisfied, thus ensuring that the decks of the two spans are at the same elevation; the support wheel 423 is in contact with the lower surface of the latch during the whole process;

[0099] In this case, the positions of the pin body 32 of the upper latch assembly 1 and the upper vertical adjustment assembly 2 remain unchanged;

[0100] Because under this working condition, the bridge decks of Bridge 100 and Bridge 2 200 have been lifted to the same elevation, and then the pin body 32 of the lower latch assembly 3 is operated to move to the corresponding socket 33; after the pin body 32 is extended to the working position, the hydraulic adjustment cylinder 41 in the lower vertical adjustment assembly 4 can be operated, and when the support wheel 423 of the lower vertical adjustment assembly 4 moves to the highest position, the pin body 32 of the lower latch assembly 3 will be exactly between the support wheel 423 and the limiting wheel 43, and the pin body 32 is clamped by the support wheel 423 and the limiting wheel 43, that is, it satisfies: H1+L1=H2+L2.

[0101] The upper latch assembly 1 and the lower latch assembly 3 are in contact with the corresponding support wheels 423; at this time, the rotating shaft, the transition shaft, and the center of the support wheel 423 are on the same vertical line, thereby ensuring that the upper latch assembly 1, the lower latch assembly 3, and all the support wheels 423 can be in contact and withstand the vertical load during the passage of the train, and the hydraulic adjustment cylinder 41 does not bear the component force during the passage of the train; thereby ensuring that the upper latch assembly 1, the lower latch assembly 3 and the support wheel 423 can withstand the vertical load during the passage of the train under this working condition.

[0102] In some possible implementations,

[0103] like Figure 3 , Figure 4 As shown, a limit stopper 44 abutting against the crank arm 422 is also provided on the bridge 100 or the bridge 200; the limit stopper 44 is provided on the side of the crank arm 422 away from the hydraulic adjustment cylinder 41; a pad 4221 abutting against the limit stopper 44 is provided on the crank arm 422;

[0104] After the bridge 1 100 and the bridge 2 200 are connected in place, the pad 4221 and the limit stop block 44 are close to each other and in contact.

[0105] By providing the limit stopper 44 and the pad 4221, the telescopic section of the hydraulic adjustment cylinder 41 is prevented from being over-extended, so that the bottom of the support wheel 423 cannot abut against the bottom of the corresponding pin body 32, thereby failing to achieve vertical load transfer.

[0106] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A connection mechanism for connecting the cantilever ends of a double-wing horizontal steel bridge in the middle of a span, used for connecting adjacent bridges 1 and 2 close to one end of each other; characterized in that: It includes an upper connecting device and a lower connecting device symmetrically arranged along the bridge direction; The upper connecting device comprises two groups of upper connecting members symmetrically arranged along the bridge direction; the lower connecting device comprises two groups of lower connecting members symmetrically arranged along the bridge direction; The upper connecting member includes an upper latch assembly arranged on the upper chord of the first bridge and extending into the second bridge near the end of the first bridge, and an upper vertical adjustment assembly arranged on the second bridge and abutting against the upper latch assembly; The lower connecting member includes a lower latch assembly arranged on the lower chord of the bridge 2 and extending into the end of the bridge 1 close to the bridge 2, and a lower vertical adjustment assembly arranged on the bridge 1 and abutting against the lower latch assembly; The upper vertical adjustment component is hingedly connected to the first bridge, and the lower vertical adjustment component is hingedly connected to the second bridge.

2. The connection mechanism for connecting the cantilever ends of a double-wing horizontal rotation steel bridge according to claim 1 is characterized in that: The upper latch assembly has the same structure as the lower latch assembly; It comprises a telescopic driving member telescopically extending along the bridge direction, a pin body hinged to the telescopic section of the telescopic driving member and arranged along the bridge direction, and a socket used in conjunction with the pin body.

3. The connection mechanism for connecting the cantilever ends of a double-wing horizontal rotation steel bridge according to claim 2 is characterized in that: The upper latch assembly or the lower latch assembly also includes two groups of transverse bridge limiters that are arranged in the insertion hole and close to each other on one side to form a guide groove; the two groups of transverse bridge limiters are on the same horizontal plane.

4. The connection mechanism for connecting the cantilever ends of a double-wing horizontal rotation steel bridge according to claim 3 is characterized in that: The transverse bridge limiter includes a side baffle installed in the insertion hole and in contact with the outer side of the pin body, and a roller installed on the side of the side baffle close to the upper vertical adjustment component or the lower vertical adjustment component and rotating vertically; The roller is close to one side of the pin body and is on the same plane as the side baffle plate close to the pin body.

5. The connection mechanism for connecting the cantilever ends in the mid-span of a double-wing horizontal rotation steel bridge according to claim 4 is characterized in that: The side baffle includes an installation section for installing the roller, and a guide section arranged at one end of the installation section away from the roller; the guide section has an arc-shaped structure on the side close to the pin body and contacts and cooperates with the pin body, and a gap is formed between the side of the installation section close to the pin body and the pin body.

6. The connection mechanism for connecting the cantilever ends of a double-wing horizontal rotation steel bridge according to claim 2 is characterized in that: The upper latch assembly or the lower latch assembly also includes a support ring sleeved on the outside of the pin body.

7. The connection mechanism for connecting the cantilever ends of a double-wing horizontal rotation steel bridge according to claim 1 is characterized in that: The upper vertical adjustment assembly has the same structure as the lower vertical adjustment assembly; It includes a hydraulic adjustment cylinder which is hinged to the first bridge or the second bridge and rotates around the transverse bridge direction, and a contact abutment member which is hinged to the telescopic section of the hydraulic adjustment cylinder and hinged to the first bridge or the second bridge; The hydraulic adjustment cylinder and the contact abutment member are located below the upper latch assembly or the lower latch assembly.

8. The connection mechanism for connecting the cantilever ends in the mid-span of a double-wing horizontal rotation steel bridge according to claim 7 is characterized in that: The lower vertical adjustment assembly also includes a limiting wheel which is arranged above the lower latch assembly and abuts against the lower latch assembly.

9. The connection mechanism for connecting the cantilever ends in the mid-span of a double-wing horizontal rotation steel bridge according to claim 7 is characterized in that: The contact abutment member comprises a bracket hinged to the first bridge or the second bridge and rotating around the transverse bridge direction, and a crank arm hinged to the bracket and equipped with a supporting wheel; the crank arm is hinged to the telescopic section of the hydraulic adjustment cylinder; After the bridge 1 and the bridge 2 are connected in place, the support wheel abuts against the bottom of the upper latch assembly or the lower latch assembly, and the bottom of the limiting wheel abuts against the top of the lower latch assembly; After the connection between bridge one and bridge two is completed, the axis of the support wheel along the transverse direction of the bridge, the hinge point between the crank arm and the bracket, and the hinge point between the bracket and bridge one or bridge two are on the same vertical plane.

10. The connection mechanism for connecting the cantilever ends in the mid-span of a double-wing horizontal rotation steel bridge according to claim 8, characterized in that: A limit stopper abutting against the crank arm is also provided on the bridge 1 or the bridge 2; the limit stopper is provided on a side of the crank arm away from the hydraulic adjustment cylinder; After the bridge one and the bridge two are connected in place, the crank arm and the limit stop block come into contact with each other.

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