CN110607755A - Supporting leg adjusting mechanism for erecting last span of bridge erecting machine - Google Patents
Supporting leg adjusting mechanism for erecting last span of bridge erecting machine Download PDFInfo
- Publication number
- CN110607755A CN110607755A CN201910978166.3A CN201910978166A CN110607755A CN 110607755 A CN110607755 A CN 110607755A CN 201910978166 A CN201910978166 A CN 201910978166A CN 110607755 A CN110607755 A CN 110607755A
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- bearing platform
- power pulley
- fixed
- limiting
- bridge
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a supporting leg adjusting mechanism during the final span of the bridge erecting machine, which comprises a lifting mechanism, a bearing platform, a cantilever beam, an upper guide pillar, an upper guide sleeve, a first pull rod, a second pull rod, a portal frame, an upper power pulley mechanism, a primary lower guide sleeve, a lower guide pillar, a lower power pulley mechanism, a transverse moving track, a rear support leg, a pre-support beam, a middle support leg and a handle, wherein the rear support leg is fixed at one end of the pre-support beam, the middle support leg is fixed at the other end of the pre-support beam, the bearing platform is fixed at the top of the middle support leg, the cantilever beam is fixed at one end of the bearing platform, the lifting mechanism is installed at the top of the bearing platform, the lower mechanism and the upper mechanism can realize independent movement through the arrangement of the upper power pulley mechanism and the lower power pulley mechanism, the upper mechanism and the lower mechanism are detached through high-strength bolts, the convenience of the device is improved, the safety is improved, the time is saved, and the working efficiency is improved.
Description
Technical Field
The invention relates to a supporting leg adjusting device, in particular to a supporting leg adjusting mechanism for a bridge girder erection machine during the final span erection, and belongs to the technical field of bridge girder erection machine application.
Background
Bridging is accomplished by manually placing a temporary or permanent partial plug over the actual bottom of the borehole. The special process aims of constructing branch directional holes, drilling deviation correction or deflecting, bypassing in-hole accident drilling tools, layering test and the like are mainly used, a bridge erecting machine can be used during bridge erecting, and the operation of the bridge erecting machine is complex.
Notice a simple and easy bridge crane for CN205874987U, this simple and easy bridge crane, moreover, the steam generator is light, easily draw materials and preparation, high durability and convenient operation, be applicable to the simple and easy bridge crane of the hoist and mount of small-size bridge, however, this simple and easy bridge crane is when last striding, because the platform face of last stride is higher than preceding pier plane, people often need dismantle the landing leg, need install once more after the dismantlement, inconvenience has been brought for people, and simultaneously, when hoist mechanism need repair, to the dismantlement of driving sheave too difficult and the back lock, for this, we provide a landing leg adjustment mechanism when frame bridge crane erects last stride.
Disclosure of Invention
The invention aims to provide a supporting leg device, which is characterized in that a first-stage lower guide sleeve, a second-stage lower guide sleeve, a lower guide post, a lower power pulley mechanism and a transverse moving track in a lower mechanism of a supporting leg are detachably connected with a lifting mechanism, a bearing platform, a cantilever beam, an upper guide post, an upper guide sleeve, a first pull rod, a second pull rod, a portal frame and an upper power pulley mechanism in an upper mechanism through high-strength bolts, so that the lower mechanism can be conveniently and quickly detached, a limit block is driven to rotate through a handle, because the limiting block and the placing plate are meshed and connected through the internal thread and the external thread, the limiting block can move towards the direction far away from the fixed rod when the limiting block is rotated, thereby relieve the spacing to the dead lever, the baffle pushes down the dead lever and moves towards the direction of keeping away from spacing spring under the elastic force effect of spacing spring to make the dead lever pop out the spacing groove, relieve the driving sheave, be convenient for the dismantlement of driving sheave.
The technical problem solved by the invention is as follows:
(1) how to enable the lower mechanism and the upper mechanism to realize independent movement through the arrangement of the upper power pulley mechanism and the lower power pulley mechanism, and the lower mechanism and the upper mechanism are connected through a high-strength bolt to solve the problem that the bridge girder erection machine in the prior art is repeatedly disassembled in the last span;
(2) how to use the screw thread to restrict the dead lever at the spacing inslot through the setting of stopper, when the dead lever is carrying on spacingly without external force, spacing spring promotes the baffle motion for the baffle promotes the dead lever and pops out the spacing groove, solves among the prior art and is difficult to carry out the problem dismantled to the part fast.
The purpose of the invention can be realized by the following technical scheme: a supporting leg adjusting mechanism for a bridge girder erection machine during erection of a last span comprises a lifting mechanism, a bearing platform, a cantilever beam, an upper guide pillar, an upper guide sleeve, a first pull rod, a second pull rod, a portal frame, an upper power pulley mechanism, a primary lower guide sleeve, a secondary lower guide sleeve, a lower guide pillar, a lower power pulley mechanism, a transverse moving track, a rear supporting leg, a pre-support beam, a middle supporting leg and a handle, wherein the rear supporting leg is fixed at one end of the pre-support beam, the middle supporting leg is fixed at the other end of the pre-support beam, the bearing platform is fixed at the top of the middle supporting leg, and the cantilever beam is fixed at one end of the bearing;
the top of the bearing platform is provided with a lifting mechanism, the bottom of the bearing platform is symmetrically fixed with upper guide posts, the outer sides of the upper guide posts are sleeved with upper guide sleeves, a portal frame is arranged below the bearing platform, the top of the portal frame is rotatably connected with a first pull rod through hinges, the top end of the first pull rod is rotatably connected with the corresponding upper guide post through hinges, the two ends of the portal frame are rotatably connected with second pull rods through hinges, and the top ends of the second pull rods are rotatably connected with the bearing platform through hinges;
upper power pulley mechanisms are symmetrically arranged below the portal frame and are respectively arranged at the bottom ends of the two upper guide columns;
the lower guide pillar is fixedly connected to the bottom end of the upper guide pillar through a bolt, a lower guide sleeve is sleeved on the outer side of the lower guide pillar, a lower power pulley mechanism is installed at the bottom end of the lower guide pillar, a transverse moving rail is installed below the lower power pulley mechanism, a first-level lower guide sleeve and a second-level lower guide sleeve are arranged above the lower power pulley mechanism, and the first-level lower guide sleeve and the second-level lower guide sleeve are all sleeved on the outer side of the lower guide pillar.
The invention has further technical improvements that: the lifting mechanism consists of a winding drum, a driving motor, a placing plate, a traction wheel, a fixed wheel, a limiting spring, a limiting groove, a fixed rod and a limiting block, wherein the driving motor is symmetrically fixed at the top of the bearing platform, the winding drum is fixed at the end part of an output shaft of the driving motor and is rotationally connected with the bearing platform through a bearing, the fixed wheel is arranged on one side of the winding drum, and the fixed wheel is rotationally connected with the bearing platform through a bearing;
the bearing platform is characterized in that a placing plate is arranged at the bottom of the bearing platform, traction wheels are symmetrically arranged in the placing plate under the winding drum, the traction wheels are rotatably connected with the placing plate through bearings, the top of each traction wheel penetrates through the placing plate, and the winding drum, the fixed wheels and the traction wheels are connected through steel wires.
The invention has further technical improvements that: the limiting groove is symmetrically formed in one end of the placing plate, a fixing rod is connected to the limiting groove in a sliding mode, the end portion of the fixing rod penetrates through the two traction wheels in sequence, a limiting block is arranged at one end of the fixing rod, external threads are arranged on the outer side of the limiting groove, internal threads are arranged on the inner wall of the limiting groove, and the limiting block and the placing plate are connected through the internal threads and the external threads in a meshed mode.
The invention has further technical improvements that: one side that the limiting block was kept away from to the spacing groove is provided with spacing spring and baffle, baffle sliding connection is in the spacing groove, the both ends of spacing spring respectively with place board and baffle fixed connection, and the one end that the spacing spring was kept away from to the baffle contacts with the dead lever.
The invention has further technical improvements that: and a handle is arranged at one end of the limiting block, which is far away from the fixing rod.
Compared with the prior art, the invention has the beneficial effects that:
1. when the invention is used, the part above the upper power pulley mechanism is called as an upper mechanism, the part below the upper power pulley is called as a lower mechanism, the first-stage lower guide sleeve, the second-stage lower guide sleeve, the lower guide pillar, the lower power pulley mechanism and the transverse moving track in the lower mechanism of the supporting leg are detachably connected with the lifting mechanism, the bearing platform, the cantilever beam, the upper guide pillar, the upper guide sleeve, the first pull rod, the second pull rod, the portal frame and the upper power pulley mechanism in the upper mechanism through high-strength bolts, so that the lower mechanism can be conveniently and rapidly detached, the lower mechanism and the upper mechanism can realize independent motion through the arrangement of the upper power pulley mechanism and the lower power pulley mechanism, the lower mechanism and the lower mechanism are connected through the high-strength bolts, the upper mechanism and the lower mechanism are detached, the use convenience of the device is increased, and the safety is increased, time is saved, and working efficiency is improved.
2. When the lifting mechanism needs to be maintained, the placing plate is put down, the handle is rotated, so that the handle drives the limiting block to rotate, the limiting block can move towards the direction far away from the fixing rod when the limiting block is rotated due to the meshing connection of the internal thread and the external thread, so that the limiting of the fixing rod is relieved, the fixing rod is pushed to move towards the direction far away from the limiting spring by the baffle under the elastic force action of the limiting spring, so that the fixing rod is popped out of the limiting groove, the traction wheel is relieved, the traction wheel is convenient to disassemble, the fixing rod is limited in the limiting groove by the thread through the arrangement of the limiting block, when the fixing rod is limited by no external force, the baffle is pushed by the limiting spring to move, so that the baffle pushes the fixing rod to pop out of the limiting groove, the rapid disassembly is realized, the rust and, the working efficiency is improved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the bridge of the present invention;
FIG. 2 is a schematic view of a support leg according to the present invention;
FIG. 3 is a schematic view of the lifting mechanism of the present invention;
fig. 4 is a schematic view of the internal structure of the placement board of the present invention.
In the figure: 1. a lifting mechanism; 2. a load-bearing platform; 3. a cantilever beam; 4. an upper guide post; 5. an upper guide sleeve; 6. a first pull rod; 7. a second pull rod; 8. a gantry; 9. an upper power pulley mechanism; 10. a primary lower guide sleeve; 11. a secondary lower guide sleeve; 12. a lower guide post; 13. a lower power pulley mechanism; 14. traversing the track; 15. a rear leg; 16. pre-supporting a beam; 17. a middle support leg; 18. a reel; 19. a drive motor; 20. placing the plate; 21. a traction sheave; 22. a fixed wheel; 23. a limiting spring; 24. a limiting groove; 25. fixing the rod; 26. a limiting block; 27. a handle; 28. and a baffle plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a supporting leg adjusting mechanism for a bridge erecting machine during the final span erection comprises a lifting mechanism 1, a bearing platform 2, a cantilever beam 3, an upper guide pillar 4, an upper guide sleeve 5, a first pull rod 6, a second pull rod 7, a portal frame 8, an upper power pulley mechanism 9, a first-stage lower guide sleeve 10, a second-stage lower guide sleeve 11, a lower guide pillar 12, a lower power pulley mechanism 13, a transverse moving track 14, a rear supporting leg 15, a pre-support beam 16, a middle supporting leg 17 and a handle 27, wherein the rear supporting leg 15 is fixed at one end of the pre-support beam 16, the middle supporting leg 17 is fixed at the other end of the pre-support beam 16, the bearing platform 2 is fixed at the top of the middle supporting leg 17, and the cantilever beam 3 is fixed at one end of;
the top of the bearing platform 2 is provided with a lifting mechanism 1, the bottom of the bearing platform 2 is symmetrically fixed with upper guide pillars 4, the outer sides of the upper guide pillars 4 are sleeved with upper guide sleeves 5, a portal frame 8 is arranged below the bearing platform 2, the top of the portal frame 8 is rotatably connected with a first pull rod 6 through a hinge, the top end of the first pull rod 6 is rotatably connected with the corresponding upper guide pillar 4 through a hinge, two ends of the portal frame 8 are rotatably connected with second pull rods 7 through hinges, and the top end of each second pull rod 7 is rotatably connected with the bearing platform 2 through a hinge;
upper power pulley mechanisms 9 are symmetrically arranged below the portal frame 8, and the upper power pulley mechanisms 9 are respectively arranged at the bottom ends of the two upper guide pillars 4;
the bottom end of the upper guide post 4 is fixedly connected with a lower guide post 12 through a bolt, a lower guide sleeve is sleeved on the outer side of the lower guide post 12, a lower power pulley mechanism 13 is installed at the bottom end of the lower guide post 12, a transverse moving track 14 is installed below the lower power pulley mechanism 13, a first-level lower guide sleeve 10 and a second-level lower guide sleeve 11 are arranged above the lower power pulley mechanism 13, and the first-level lower guide sleeve 10 and the second-level lower guide sleeve 11 are both sleeved on the outer side of the lower guide post 12.
The lifting mechanism 1 comprises a winding drum 18, a driving motor 19, a placing plate 20, a traction sheave 21, a fixed wheel 22, a limiting spring 23, a limiting groove 24, a fixing rod 25 and a limiting block 26, wherein the driving motor 19 is symmetrically fixed at the top of the bearing platform 2, the winding drum 18 is fixed at the end part of an output shaft of the driving motor 19, the winding drum 18 is rotatably connected with the bearing platform 2 through a bearing, the fixed wheel 22 is arranged on one side of the winding drum 18, and the fixed wheel 22 is rotatably connected with the bearing platform 2 through a bearing;
the bottom of the bearing platform 2 is provided with a placing plate 20, traction wheels 21 are symmetrically arranged in the placing plate 20 under the winding drum 18, the traction wheels 21 are rotatably connected with the placing plate 20 through bearings, the top of the traction wheels 21 penetrates through the placing plate 20, the winding drum 18, the fixed wheel 22 and the traction wheels 21 are connected through steel wires, and the winding drum 18, the fixed wheel 22 and the traction wheels 21 are connected through steel wires, so that objects can be conveniently lifted.
Place board 20 one end symmetry and seted up spacing groove 24, sliding connection has dead lever 25 in the spacing groove 24, two driving sheaves 21 are run through in proper order to dead lever 25 tip, dead lever 25 one end is provided with stopper 26, the spacing groove 24 outside is provided with the external screw thread, spacing groove 24 inner wall is provided with the internal thread, stopper 26 with place board 20 through internal thread and external screw thread meshing connection, through stopper 26's setting for stopper 26 is connected with placing board 20 meshing, increases dead lever 25's stability and security.
One side of the limiting groove 24, which is far away from the limiting block 26, is provided with a limiting spring 23 and a baffle 28, the baffle 28 is slidably connected in the limiting groove 24, two ends of the limiting spring 23 are fixedly connected with the placing plate 20 and the baffle 28 respectively, one end, which is far away from the limiting spring 23, of the baffle 28 is in contact with the fixing rod 25, and the fixing rod 25 is automatically ejected out of the limiting groove 24 through the arrangement of the spring and the baffle 28.
And a handle 27 is installed at one end of the limiting block 26, which is far away from the fixing rod 25, and the stress area of an operator is increased through the arrangement of the handle 27.
The working principle is as follows: when the invention is used, the part above the upper power pulley mechanism 9 is called an upper mechanism, the part below the upper power pulley is called a lower mechanism, the first-stage lower guide sleeve 10, the second-stage lower guide sleeve 11, the lower guide post 12, the lower power pulley mechanism 13 and the transverse moving track 14 in the lower mechanism of the supporting leg are detachably connected with the lifting mechanism 1, the bearing platform 2, the cantilever beam 3, the upper guide post 4, the upper guide sleeve 5, the first pull rod 6, the second pull rod 7, the portal frame 8 and the upper power pulley mechanism 9 in the upper mechanism through high-strength bolts, so that the lower mechanism can be conveniently and quickly detached, when the lifting mechanism 1 needs maintenance, the placing plate 20 is put down, the handle 27 is rotated, so that the handle 27 drives the limiting block 26 to rotate, because the limiting block 26 and the placing plate 20 are meshed and connected through internal threads and external threads, the limiting block 26 can move towards the direction far away from the fixing rod 25 when, thereby releasing the limit of the fixing rod 25, the baffle 28 pushes the fixing rod 25 to move in a direction away from the limit spring 23 under the elastic force of the limit spring 23, so that the fixing rod 25 is ejected out of the limit groove 24, the traction sheave 21 is released, and the detachment of the traction sheave 21 is facilitated.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a landing leg adjustment mechanism when frame bridge crane erects last stride which characterized in that: the device comprises a lifting mechanism (1), a bearing platform (2), a cantilever beam (3), an upper guide pillar (4), an upper guide sleeve (5), a first pull rod (6), a second pull rod (7), a portal frame (8), an upper power pulley mechanism (9), a primary lower guide sleeve (10), a secondary lower guide sleeve (11), a lower guide pillar (12), a lower power pulley mechanism (13), a transverse moving track (14), rear support legs (15), a pre-support beam (16), middle support legs (17) and a handle (27), wherein one end of the pre-support beam (16) is fixedly provided with the rear support legs (15), the other end of the pre-support beam (16) is fixedly provided with the middle support legs (17), the top of the middle support legs (17) is fixedly provided with the bearing platform (2), and one end of the bearing platform (2) is fixedly provided with the cantilever beam;
the lifting mechanism (1) is installed at the top of the bearing platform (2), the upper guide pillars (4) are symmetrically fixed at the bottom of the bearing platform (2), the upper guide pillars (4) are sleeved with upper guide sleeves (5), a portal frame (8) is arranged below the bearing platform (2), the top of the portal frame (8) is rotatably connected with a first pull rod (6) through a hinge, the top end of the first pull rod (6) is rotatably connected with the corresponding upper guide pillars (4) through hinges, the two ends of the portal frame (8) are rotatably connected with second pull rods (7) through hinges, and the top ends of the second pull rods (7) are rotatably connected with the bearing platform (2) through hinges;
upper power pulley mechanisms (9) are symmetrically arranged below the portal frame (8), and the upper power pulley mechanisms (9) are respectively arranged at the bottom ends of the two upper guide columns (4);
the guide post (12) under last guide pillar (4) bottom through bolt fixedly connected with, guide pin bushing under guide pillar (12) outside cover is equipped with, power pulley mechanism (13) are installed down to guide pillar (12) bottom down, sideslip track (14) are installed to power pulley mechanism (13) below down, power pulley mechanism (13) top is provided with guide pin bushing (10) and second grade lower guide pin bushing (11) down, and guide pin bushing (10) and second grade lower guide pin bushing (11) all overlap and establish guide pin bushing (12) outside down under one-level.
2. The mechanism for adjusting the support leg during the final span erection of the bridge erecting machine according to claim 1, wherein the lifting mechanism (1) is composed of a winding drum (18), a driving motor (19), a placing plate (20), a traction sheave (21), a fixed wheel (22), a limiting spring (23), a limiting groove (24), a fixed rod (25) and a limiting block (26), the driving motor (19) is symmetrically fixed on the top of the bearing platform (2), the winding drum (18) is fixed on the end part of an output shaft of the driving motor (19), the winding drum (18) is rotatably connected with the bearing platform (2) through a bearing, the fixed wheel (22) is arranged on one side of the winding drum (18), and the fixed wheel (22) is rotatably connected with the bearing platform (2) through a bearing;
the bearing platform (2) bottom is provided with places board (20), place board (20) inside be located reel (18) under the symmetry and be provided with driving sheave (21), and driving sheave (21) rotate through bearing and place board (20) and be connected, driving sheave (21) top is run through and is placed board (20), reel (18), fixed pulley (22) and driving sheave (21) are through the steel wire connection.
3. The mechanism for adjusting supporting legs during the final span of the bridge erection machine according to claim 2, wherein one end of the placing plate (20) is symmetrically provided with a limiting groove (24), a fixing rod (25) is slidably connected in the limiting groove (24), the end of the fixing rod (25) sequentially penetrates through the two traction wheels (21), one end of the fixing rod (25) is provided with a limiting block (26), the outer side of the limiting groove (24) is provided with an external thread, the inner wall of the limiting groove (24) is provided with an internal thread, and the limiting block (26) and the placing plate (20) are connected through the internal thread and the external thread in a meshed manner.
4. The mechanism for adjusting the support leg during the final span of the bridge erection machine according to claim 3, wherein a limiting spring (23) and a baffle (28) are arranged on one side of the limiting groove (24) far away from the limiting block (26), the baffle (28) is slidably connected in the limiting groove (24), two ends of the limiting spring (23) are fixedly connected with the placing plate (20) and the baffle (28), respectively, and one end of the baffle (28) far away from the limiting spring (23) is in contact with the fixing rod (25).
5. A leg adjustment mechanism for the final span of a bridge girder erection machine according to claim 3, wherein a handle (27) is installed at one end of the limiting block (26) far away from the fixing rod (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978166.3A CN110607755B (en) | 2019-10-15 | 2019-10-15 | Supporting leg adjusting mechanism for erecting last span of bridge erecting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978166.3A CN110607755B (en) | 2019-10-15 | 2019-10-15 | Supporting leg adjusting mechanism for erecting last span of bridge erecting machine |
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| Publication Number | Publication Date |
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| CN110607755A true CN110607755A (en) | 2019-12-24 |
| CN110607755B CN110607755B (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910978166.3A Active CN110607755B (en) | 2019-10-15 | 2019-10-15 | Supporting leg adjusting mechanism for erecting last span of bridge erecting machine |
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| CN110607755B (en) | 2021-04-06 |
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