CN112853930B - Underframe structure of steel bridge frame - Google Patents
Underframe structure of steel bridge frame Download PDFInfo
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- CN112853930B CN112853930B CN202110067609.0A CN202110067609A CN112853930B CN 112853930 B CN112853930 B CN 112853930B CN 202110067609 A CN202110067609 A CN 202110067609A CN 112853930 B CN112853930 B CN 112853930B
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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
- E01D19/00—Structural or constructional details of bridges
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
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Abstract
The invention discloses an underframe structure of a steel bridge frame, belonging to the technical field of steel bridge frames, and the underframe structure comprises a base, a stand column, a leveling device, a first supporting seat and a second supporting seat; spring seats are arranged on the first supporting seat and the second supporting seat, the spring seats are used for being welded at the bottom of the steel bridge frame, the second supporting seat is positioned on two sides of the bottom of the steel bridge frame, an extension spring is connected between the first supporting seat and the second supporting seat, and the first supporting seat and the second supporting seat are connected to the base in a sliding mode along the width direction of the steel bridge frame; a buffer device is arranged on the second supporting seat; the guide plate is arranged on the outer side of the supporting platform and is used for being in contact with the edge of the side part of the steel bridge frame, so that when the steel bridge frame is installed, the steel bridge frame pushes the guide plate to two sides to drive the second supporting seat to slide outwards on the base; the leveling device is used for driving the upright post to move up and down so as to enable the installation height of the steel bridge frame to be a preset installation height. The invention has better buffering, shock absorption, noise reduction and leveling functions.
Description
Technical Field
The invention relates to the technical field of steel bridge frames, in particular to an underframe structure of a steel bridge frame.
Background
With the continuous development of science and technology, traffic is also more and more convenient. No matter the train, the automobile, the bus or the subway runs, the bridge can not be separated. In the process of bridge construction, the main body of the bridge is mainly made of a steel bridge frame and concrete poured on the steel bridge frame, so that the steel bridge frame makes an immeasurable contribution to the stability and firmness of the bridge. Ensuring the quality of the steel bridge is therefore a very important key technology. The steel bridge frame is mainly formed by welding a plurality of criss-cross steel plates, and in the process of manufacturing the steel bridge frame, the inside and the outside of each joint between every two adjacent steel plates need to be welded, so that the structural firmness of the steel bridge frame is ensured.
The steel bridge beam frame chassis is used for supporting in steel bridge beam frame bottom, and current steel bridge beam frame chassis mainly has following problem:
1. when the steel bridge frame is arranged on the underframe, the steel bridge frame cannot play a good role in guiding and mounting, so that the steel bridge frame is inconvenient to mount;
2. the underframe is usually provided with a welding block for welding with a steel bridge frame, and the welding block is fixed in position and cannot be flexibly adapted to different steel bridge frames;
3. the underframe is welded on site, so that the construction period is long;
4. the underframe cannot play a good role in buffering and damping;
5. the basic road surface of steel bridge roof beam structure installation is the uniform height usually all, therefore the support height diverse of each chassis of steel bridge roof beam structure below, so can make the installation of steel bridge roof beam structure comparatively inconvenient, and the steel bridge roof beam structure after the installation has certain slope.
In view of this, the present invention provides a novel underframe structure for a steel bridge.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an underframe structure of a steel bridge frame.
In order to achieve the purpose, the invention provides the following technical scheme:
an underframe structure of a steel bridge frame comprises a base, an upright post arranged below the base, a leveling device positioned below the upright post, a first supporting seat and a second supporting seat, wherein the first supporting seat and the second supporting seat are positioned above the base;
spring seats are arranged on the first supporting seat and the second supporting seat, the spring seats are used for being welded to the bottom of a steel bridge frame, the second supporting seat is located on two sides of the bottom of the steel bridge frame, an extension spring is connected between the first supporting seat and the second supporting seat, and the first supporting seat and the second supporting seat are connected to the base in a sliding mode along the width direction of the steel bridge frame;
the second supporting seat is provided with a buffer device, the buffer device comprises a lower pressing block, a first screw rod, a resisting spring, a moving block, a first conical gear, a second conical gear, a supporting platform, a second screw rod and a pushing block, a cavity is arranged in the second supporting seat, the first screw rod is positioned in the cavity, one end of the first screw rod is inserted into the inner wall of the cavity, the other end of the first screw rod is fixed with the center of the first conical gear, the length direction of the first screw rod is consistent with the width direction of the steel bridge frame, the supporting platform is positioned above the second supporting seat, the upper part of the lower pressing block is fixed on the supporting platform, the lower part of the lower pressing block is inserted into the second supporting seat and extends into the cavity, the bottom surface of the lower pressing block and the top surface of the moving block are inclined surfaces, and the bottom surface of the lower pressing block is contacted with the top surface of the moving block so that the lower pressing block is tightly pressed on the moving block, the moving block is sleeved on the first screw and in threaded fit with the first screw, the moving block is in sliding fit with the inner wall of the cavity along the length direction of the first screw, and the abutting spring is sleeved on the first screw and abutted between the moving block and the side wall of the cavity; a through hole is fixed at the top of the cavity, the second bevel gear is meshed with the first bevel gear, the second screw rod is vertically arranged, the lower end of the second screw rod is fixed at the center of the second bevel gear, the upper end of the second screw rod penetrates through the through hole, the pushing block is sleeved on the second screw rod and is in threaded fit with the second screw rod, the pushing block is positioned in the through hole and is in up-and-down sliding fit with the side wall of the through hole, and the pushing block is used for pushing the spring seat upwards so as to push the spring seat to move upwards when the supporting platform is pressed downwards;
a guide plate is arranged on the outer side of the supporting platform and is used for being in contact with the edge of the side part of the steel bridge frame, so that when the steel bridge frame is installed, the steel bridge frame pushes the guide plate towards two sides to drive the second supporting seat to slide outwards on the base;
the leveling device is used for driving the upright post to move up and down so as to enable the installation height of the steel bridge frame to be a preset installation height.
More preferably: the guide plate comprises a horizontal section, an inclined section and a vertical section;
the horizontal section, the inclined section and the vertical section are sequentially arranged from top to bottom, the lower end of the inclined section is connected with the vertical section, and the upper end of the inclined section is inclined outwards and connected with the horizontal section, so that the steel bridge frame slides on the inclined section when the steel bridge frame is installed;
the limiting plate is fixed on the base and comprises a longitudinal plate and a transverse plate, the longitudinal plate is located at the outer side of the second supporting seat, the lower end of the second supporting seat is fixed on the base, the upper end of the second supporting seat is fixed with the transverse plate, and the horizontal section is used for sliding along the width direction of the steel bridge beam frame at the bottom surface of the transverse plate.
More preferably: the spring seat comprises a welding plate, a bottom plate and a buffer spring;
the welding plate is used for welding the bottom of the steel bridge frame, the bottom plate is positioned below the welding plate, and the buffer spring is fixed between the welding plate and the bottom plate;
and positioning columns are fixed on the first supporting seat and the second supporting seat, the lower ends of the positioning columns are fixed on the first supporting seat or the second supporting seat, and the upper ends of the positioning columns penetrate through the bottom plate.
More preferably: first supporting seat with the second supporting seat all is provided with two, first supporting seat is located steel bridge roof beam structure bottom both sides, two first supporting seat is located two between the second supporting seat, two pass through between the first supporting seat extension spring connects.
More preferably: the bottom of the base is provided with a slot, and the upright post is inserted into the slot and is connected with the base through a bolt;
the stand is followed steel bridge roof beam structure width direction is provided with two, two be provided with supplementary support piece between the stand, supplementary support piece includes arch bar and connecting portion, connecting portion connect in the arch bar both ends, connecting portion bolted connection is in on the stand, be fixed with the supporting shoe on the arch bar, the supporting shoe supports the base bottom.
More preferably: the leveling device comprises an installation plate, a clamping mechanism, a first clamping block, a second clamping block and a side plate;
the clamping mechanism is used for clamping the upright column between the first clamping block and the second clamping block, the side, close to the second clamping block, of the first clamping block and the side, close to the first clamping block, of the second clamping block are both inclined planes, the lower end of the upright column is provided with a contact surface in contact with the inclined planes, and the contact surfaces are located on two opposite sides of the upright column;
the side plate is located the stand for another relative both sides of contact surface, first press from both sides tight piece with the second presss from both sides tight piece sliding connection on the side plate, the mounting panel is fixed on the stand, the mounting panel with first press from both sides tight piece, second press from both sides tight piece bolted connection.
More preferably: the clamping mechanism comprises a shell, a bidirectional lead screw, a motor and a moving block, the bidirectional lead screw is located in the shell, one end of the bidirectional lead screw is connected with the side of the shell in a rotating mode, the other end of the bidirectional lead screw penetrates through the shell and is fixed with the motor, the shell is close to one side of a first clamping block and a second clamping block which are arranged in an opening mode, the moving block comprises a first clamping block and a second clamping block, the first clamping block and the second clamping block are sleeved on the bidirectional lead screw and are respectively matched with a left-handed thread and a right-handed thread on the bidirectional lead screw in a threaded mode, the first clamping block and the second clamping block penetrate through the opening of the shell and are used for clamping the first clamping block and the second clamping block, the first clamping block is located on the outer side of the second clamping block, and the second clamping block is located on the outer side of the first clamping block.
More preferably: the two side plates are arranged, the first clamping block and the second clamping block are located between the two side plates, the stand column is inserted between the first clamping block, the second clamping block and the two side plates, and the first clamping block and the second clamping block are connected to the side plates in a sliding mode along the length direction of the bidirectional screw rod.
More preferably: waist shape hole has been seted up on the mounting panel, waist shape hole length direction with two-way lead screw length direction is the same, first clamp tight piece with the second presss from both sides tight piece top and sets up threaded hole to make the bolt install waist shape hole with threaded hole is downthehole.
More preferably: the first clamping block and the second clamping block are provided with mounting holes for mounting the first clamping block and the second clamping block on a base plane.
In conclusion, the invention has the following beneficial effects: when the bridge subsides downwards because of the load is too big or take place to warp etc., the steel bridge roof beam structure will promote supporting platform, the briquetting moves down, the movable block will be close to support the spring removal this moment, thereby first screw rod drives first conical gear and takes place to rotate, because first conical gear sets up with the meshing of second conical gear, therefore during first conical gear rotates, second conical gear will drive the second screw rod and rotate, it will be at through-hole rebound this moment to promote the piece, thereby upwards promote the spring holder, so that the spring holder upwards removes in the reference column, thereby can play an ascending external force to the bridge, improve the security that the bridge used, better buffering shock attenuation has, the effect of noise reduction. The base planes below the steel bridge frame are different in height, so that when each underframe is installed, the height needs to be leveled to prevent the steel bridge frame from being overlarge in inclination angle, the installation is inconvenient, the service life of the steel bridge frame is also influenced, and the driving comfort level is also influenced. During adjustment, the bolt on the mounting plate is dismounted, the motor is started, so that the bidirectional screw rod rotates, at the moment, the first clamping block and the second clamping block move towards the direction close to or away from the upright post, so that the first clamping block and the second clamping block are far away from or close to each other, the upright post is inserted between the first clamping block, the second clamping block and the two side plates and is in contact with the first clamping block and the second clamping block through inclined planes, when the first clamping block and the second clamping block are far away from each other, the upright post moves downwards, when the first clamping block and the second clamping block are close to each other, the upright post moves upwards, the height of the base can be adjusted, and the leveling effect is good.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment, which is mainly used for embodying the underframe structure of a steel bridge frame;
fig. 2 is a schematic structural diagram of an embodiment, which is mainly used for embodying the structure of the first support seat and the second support seat;
FIG. 3 is a schematic structural diagram of the embodiment, which is mainly used for showing the use state of the chassis;
FIG. 4 is a schematic structural diagram of an embodiment, which is mainly used for embodying the structure of the buffering device;
FIG. 5 is a schematic structural diagram of an embodiment, which is mainly used for embodying the structure of the buffering device;
fig. 6 is a schematic structural diagram of the embodiment, which is mainly used for embodying the structure of the leveling device.
In the figure, 1, a column; 2. a base; 3. a support block; 41. an arch plate; 42. a connecting portion; 5. a limiting plate; 51. a longitudinal plate; 52. a transverse plate; 6. a leveling device; 61. mounting a plate; 621. a housing; 622. a bidirectional screw rod; 623. a motor; 6241. a first clamping block; 6242. a second clamping block; 63. a first clamping block; 64. a second clamping block; 65. mounting holes, 66 and waist-shaped holes; 67. a side plate; 68. a chute; 7. a spring seat; 71. welding the plate; 72. a base plate; 73. a buffer spring; 8. a buffer device; 801. pressing the block; 802. a first screw; 803. the spring is tightly propped; 804. a moving block; 805. a first bevel gear; 806. a connecting shaft; 807. a second bevel gear; 808. a support platform; 809. a second screw; 810. a pushing block; 811. a through hole; 9. a guide plate; 91. a horizontal segment; 92. an inclined section; 93. a vertical section; 10. a first support base; 11. a second support seat; 12. a movable groove; 13. a slot; 14. a positioning column; 15. a cavity; 16. an extension spring; 17. a steel bridge frame.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example (b): an underframe structure of a steel bridge frame 17 is shown in figures 1-6 and comprises a base 2, an upright post 1 arranged below the base 2, a leveling device 6 positioned below the upright post 1, a first supporting seat 10 and a second supporting seat 11 positioned above the base 2. Spring seats 7 are arranged on the first supporting seat 10 and the second supporting seat 11, and the spring seats 7 are used for being welded at the bottom of the steel bridge frame 17. Preferably, the spring seat 7 includes a welding plate 71, a bottom plate 72, and a buffer spring 73. The welding plate 71 is used for being welded at the bottom of the steel bridge 17, the bottom plate 72 is located below the welding plate 71, the buffer spring 73 is located between the welding plate 71 and the bottom plate 72, the upper end of the buffer spring is fixed with the welding plate 71, and the lower end of the buffer spring is fixed with the bottom plate 72. Positioning columns 14 are fixed on the first supporting seat 10 and the second supporting seat 11, the lower ends of the positioning columns 14 are fixed on the first supporting seat 10 or the second supporting seat 11, and the upper ends of the positioning columns pass through the bottom plate 72, so that the spring seat 7 is positioned at the tops of the first supporting seat 10 and the second supporting seat 11.
Referring to fig. 1-6, the second supporting seat 11 is located at two sides of the bottom of the steel bridge 17, an extension spring 16 is connected between the first supporting seat 10 and the second supporting seat 11, and the first supporting seat 10 and the second supporting seat 11 are slidably connected to the base 2 along the width direction of the steel bridge 17. Preferably, the top surface of the base 2 is provided with a movable groove 12 along the width direction of the steel bridge frame 17, and the first support seat 10 and the second support seat 11 are embedded in the movable groove 12. In order to enable the stress of the steel bridge frame 17 to be uniform, specifically, the first supporting seat 10 and the second supporting seat 11 are both provided with two, the first supporting seat 10 is located on two sides of the bottom of the steel bridge frame 17, the two first supporting seats 10 are located between the two second supporting seats 11, and the two first supporting seats 10 are connected through the extension spring 16.
It should be noted that, in order to stably connect the first supporting seat 10 and the second supporting seat 11 to the base 2, the first supporting seat 10 and the second supporting seat 11 are both provided with a long hole, the length direction of the long hole is the same as the width direction of the steel bridge frame 17, and the base 2 is provided with a threaded positioning hole corresponding to the position of the long hole, so that the first supporting seat 10 and the second supporting seat 11 are stably installed on the base 2 through bolts. The thread positioning holes are positioned on two opposite sides of the movable groove 12, and the elongated holes and the thread positioning holes are provided in plurality so as to be flexibly installed.
In the technical scheme, the spring seat 7 is supported, the spring seat 7 is positioned on the first support seat 10 and the second support seat 11 through the positioning column 14, the spring seat 7 is welded at the bottom of the steel bridge beam frame 17 in a welding mode, the installation is stable, the shock absorption and the noise reduction are realized, and a good buffering effect can be realized when the bridge load is large. The width of the steel bridge frame 17 is wide or narrow, in order to enable the underframe to better adapt to the steel bridge frame 17 and enable the steel bridge frame 17 to be stressed uniformly, the first support seat 10 and the second support seat 11 are connected to the base 2 in a sliding mode and fastened on the base 2 through bolts, the first support seat 10 and the second support seat 11 are prevented from moving at the bottom of the steel bridge frame 17 after the steel bridge frame 17 is installed, and the support stability of the steel bridge frame 17 is improved.
Referring to fig. 1-6, the bottom of the base 2 is provided with a slot 13, and the upright post 1 is inserted into the slot 13 and connected with the base 2 by a bolt. Two upright columns 1 are arranged along the width direction of the steel bridge frame 17, and an auxiliary supporting piece is arranged between the two upright columns 1 and comprises an arch plate 41 and a connecting part 42. The connecting parts 42 are connected to two ends of the arch bar 41, the connecting parts 42 are connected to the upright post 1 through bolts, the arch bar 41 arches upwards, the top surface of the arch bar is fixed with the supporting block 3, and the supporting block 3 is supported at the bottom of the base 2. The two supporting blocks 3 are symmetrically supported on two sides of the middle of the base 2.
In the technical scheme, the assembled connection mode is adopted, the upright post 1, the base 2 and the auxiliary supporting piece are connected through the bolts, and a plurality of bolts for connection can be arranged, so that the installation is stable.
Referring to fig. 1 to 6, a buffer device 8 is disposed on the second support seat 11, and the buffer device 8 includes a pressing block 801, a first screw 802, a tightening spring 803, a moving block 804, a first bevel gear 805, a second bevel gear 807, a support platform 808, a second screw 809 and a pushing block 810. When the bridge subsides downwards because of the overload or take place deformation etc. for the bridge, buffer 8 will drive spring holder 7 on the second supporting seat 11 and upwards remove to exert ascending power to the bridge through spring holder 7, so that with the better support of bridge, extension bridge life improves the security that the bridge used. A cavity 15 is arranged in the second support seat 11, the first screw 802 is positioned in the cavity 15, one end of the first screw 802 is inserted into the inner wall of the cavity 15, the other end of the first screw 802 is fixed with the center of the first bevel gear 805, and the length direction of the first screw 802 is consistent with the width direction of the steel bridge frame 17. The supporting platform 808 is located above the second supporting seat 11 and below the steel bridge frame 17, the upper part of the lower pressing block 801 is fixed on the supporting platform 808, and the lower part is inserted on the second supporting seat 11 and extends into the cavity 15. The bottom surface of the lower pressing block 801 and the top surface of the moving block 804 are inclined surfaces, and the bottom surface of the lower pressing block 801 is in surface-to-surface contact with the top surface of the moving block 804, so that the lower pressing block 801 is tightly pressed on the moving block 804. The top surface of moving block 804 is lower on the side close to first bevel gear 805 and higher on the side far from first bevel gear 805.
Referring to fig. 1 to 6, the moving block 804 is disposed on the first screw 802 and is in threaded engagement with the first screw 802, and the moving block 804 is in sliding engagement with the inner wall of the cavity 15 along the length direction of the first screw 802. The abutting spring 803 is sleeved on the first screw 802 and abuts between the moving block 804 and the side wall of the cavity 15, and the abutting spring 803 and the first bevel gear 805 are respectively located at two opposite sides of the moving block 804. The top of the cavity 15 is fixed with a through hole 811, the second bevel gear 807 is meshed with the first bevel gear 805, the second screw 809 is vertically arranged, the lower end of the second screw is fixed at the center of the second bevel gear 807, and the upper end of the second screw is arranged in the through hole 811 in a penetrating manner. A connecting shaft 806 is fixed at the center of the second bevel gear 807, the central axis of the connecting shaft 806 coincides with the central axis of the second screw 809, the central axis of the first screw 802 is perpendicular to the central axis of the second screw 809, and the lower end of the connecting shaft 806 is inserted into the bottom of the cavity 15. The pushing block 810 is sleeved on the second screw rod 809 and in threaded fit with the second screw rod 809, the pushing block 810 is embedded in the through hole 811 and in up-and-down sliding fit with the side wall of the through hole 811, and the pushing block 810 is used for upwards pushing the spring seat 7, so that when the supporting platform 808 is pressed downwards, the pushing block 810 pushes the spring seat 7 to move upwards.
In the above technical solution, when the bridge subsides downwards due to excessive load or deformation, the steel bridge frame 17 pushes the support platform 808 and the lower pressing block 801 to move downwards, and at this time the moving block 804 moves towards the abutting spring 803, so that the first screw 802 drives the first bevel gear 805 to rotate, and since the first bevel gear 805 is meshed with the second bevel gear 807, when the first bevel gear 805 rotates, the second bevel gear 807 drives the second screw 809 to rotate, and at this time the pushing block 810 moves upwards in the through hole 811, so as to push the spring seat 7 upwards, so that the spring seat 7 moves upwards in the positioning column 14, so as to exert an upward external force on the bridge, thereby improving the safety of the bridge in use, and having good buffering, shock absorption and noise reduction effects.
Referring to fig. 1-6, a guide plate 9 is disposed outside the supporting platform 808, and the guide plate 9 is used to contact with a side edge of the steel bridge 17, so that when the steel bridge 17 is installed, the steel bridge 17 pushes the guide plate 9 towards two sides to drive the second supporting seat 11 to slide outwards on the base 2. Preferably, the guide plate 9 includes a horizontal section 91, an inclined section 92, and a vertical section 93. Horizontal segment 91, slope section 92 and vertical section 93 set gradually from top to bottom, and slope section 92 lower extreme is connected with vertical section 93, and the upper end leans out and is connected with horizontal segment 91 to when making steel bridge roof beam structure 17 install, steel bridge roof beam structure 17 slides on slope section 92. Be fixed with limiting plate 5 on the base 2, limiting plate 5 includes vertical board 51 and horizontal plate 52, and vertical board 51 is located the second supporting seat 11 outside and the lower extreme is fixed on base 2, and the upper end is fixed with horizontal plate 52. Horizontal segment 91 is used for sliding along steel bridge 17 width direction at horizontal plate 52 bottom surface, and supporting platform 808 is located the spring holder 7 outside, and after steel bridge 17 installed, the level of spring holder 7 top surface is higher than the level of supporting platform 808 a little.
In the above technical scheme, when the steel bridge 17 is installed, the two side edges of the steel bridge 17 gradually move downwards along the inclined section 92 until the steel bridge 17 is supported on the spring seat 7, because the first support seat 10 and the second support seat 11 are in sliding fit with the movable groove 12, during the downward movement of the steel bridge 17, the first support seat 10 and the second support seat 11 move towards the two ends of the movable groove 12, the horizontal section 91 slides outwards along the width direction of the steel bridge 17 on the bottom surface of the transverse plate 52, the steel bridge 17 is supported on the spring seat 7, the side edge of the steel bridge 17 contacts with the inner side of the vertical section 93, and the steel bridge 17 is clamped on the vertical sections 93 on the two sides at this time, so that the steel bridge 17 is conveniently and transversely limited and fixed. The installation is nimble convenient, and steel bridge roof beam structure 17 can play better direction installation effect when installing at the chassis, therefore steel bridge roof beam structure 17 installation is comparatively convenient. In addition, in the moving process of the first supporting seat 10 and the second supporting seat 11, the spring seat 7 also moves, so that the position of the spring seat 7 can be conveniently adjusted, and flexible welding is facilitated.
Referring to fig. 1 to 6, the leveling device 6 is used for driving the upright 1 to move up and down so that the installation height of the steel bridge 17 is a preset installation height. The leveling device 6 includes a mounting plate 61, a clamping mechanism, a first clamping block 63, a second clamping block 64, and a side plate 67. The clamping mechanism is used for clamping the upright post 1 between the first clamping block 63 and the second clamping block 64, and both the side of the first clamping block 63 close to the second clamping block 64 and the side of the second clamping block 64 close to the first clamping block 63 are inclined planes. The lower end of the upright post 1 is provided with a contact surface in surface contact with the inclined surface, and the contact surface is positioned at two opposite sides of the upright post 1, so that the lower end of the upright post 1 is clamped between the first clamping block 63 and the second clamping block 64. The side plate 67 is located the other relative both sides of stand 1 relative to the contact surface, and first clamp piece 63 and second clamp piece 64 sliding connection are on side plate 67, and specifically, the inboard of side plate 67 is provided with spout 68, and the spout 68 length direction is the direction of first clamp piece 63 to second clamp piece 64, and first clamp piece 63 and second clamp piece 64 inlay in spout 68 and with spout 68 sliding fit. The mounting plate 61 is positioned above the first clamping block 63 and the second clamping block 64 and fixed on the upright post 1, and the mounting plate 61 is connected with the first clamping block 63 and the second clamping block 64 through bolts.
Referring to fig. 1-6, the clamping mechanism includes a housing 621, a bidirectional lead screw 622, a motor 623, and a clamp block. The housing 621 is located outside the side plate 67, the bidirectional screw 622 is located inside the housing 621, one end of the bidirectional screw is rotatably connected with the side portion of the housing 621, and the other end of the bidirectional screw passes through the housing 621 and is fixed to the motor 623. The motor 623 is mounted on the outer surface of one end of the housing 621, and the housing 621 is provided with an opening on the side close to the first clamping block 63 and the second clamping block 64. The clamping block comprises a first clamping block 6241 and a second clamping block 6242, and the first clamping block 6241 and the second clamping block 6242 are sleeved on the bidirectional screw rod 622 and are respectively matched with a left-handed screw thread and a right-handed screw thread on the bidirectional screw rod 622. A first and a second clamping block 6241, 6242 are opened through the housing 621 and are used to clamp the first and the second clamping block 63, 64, the first clamping block 6241 being located outside the second clamping block 64, the second clamping block 6242 being located outside the first clamping block 63. The first clamping block 6241 and the second clamping block 6242 are embedded inside the housing 621, and the first clamping block 6241 and the second clamping block 6242 are in sliding fit with the housing 621 in the length direction of the bidirectional screw rod 622. Preferably, the mounting plate 61 is provided with a waist-shaped hole 66, the length direction of the waist-shaped hole 66 is the same as the length direction of the bidirectional screw rod 622, and the tops of the first clamping block 63 and the second clamping block 64 are provided with threaded holes so that bolts can be mounted in the waist-shaped hole 66 and the threaded holes.
Referring to fig. 1 to 6, the side plates 67 are provided with two, the first clamping block 63 and the second clamping block 64 are positioned between the two side plates 67, the upright post 1 is inserted between the first clamping block 63, the second clamping block 64 and the two side plates 67, and the first clamping block 63 and the second clamping block 64 are slidably connected to the side plates 67 along the length direction of the bidirectional screw rod 622. The first clamping block 63 and the second clamping block 64 are provided with mounting holes 65 for mounting the first clamping block 63 and the second clamping block 64 on a base plane.
In the technical scheme, the height of the foundation plane below the steel bridge frame 17 is different, so that when each underframe is installed, the height needs to be leveled to prevent the steel bridge frame 17 from being too large in inclination angle, the installation is inconvenient, the service life of the steel bridge frame 17 is also influenced, and the driving comfort is also influenced, and therefore the leveling device 6 is arranged. During adjustment, the bolts on the mounting plate 61 are removed, the motor 623 is started to rotate the bidirectional screw rod 622, at this time, the first clamping block 6241 and the second clamping block 6242 move towards or away from the upright post 1, so that the first clamping block 63 and the second clamping block 64 move away from or towards each other, because the upright post 1 is inserted between the first clamping block 63, the second clamping block 64 and the two side plates 67, and is in contact with the first clamping block 63 and the second clamping block 64 through inclined surfaces, when the first clamping block 63 and the second clamping block 64 move away from each other, the upright post 1 moves downwards, and when the first clamping block 63 and the second clamping block 64 move towards each other, the upright post 1 moves upwards, so that the height of the base 2 can be adjusted, and a good leveling effect is achieved.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that several improvements and modifications without departing from the principle of the present invention will occur to those skilled in the art, and such improvements and modifications should also be construed as within the scope of the present invention.
Claims (10)
1. The utility model provides an underframe structure of steel bridge frame which characterized in that: comprises a base (2), an upright post (1) arranged below the base (2), a leveling device (6) positioned below the upright post (1), and a first supporting seat (10) and a second supporting seat (11) positioned above the base (2);
the first supporting seat (10) and the second supporting seat (11) are respectively provided with a spring seat (7), the spring seats (7) are used for being welded at the bottom of a steel bridge frame (17), the second supporting seat (11) is positioned on two sides of the bottom of the steel bridge frame (17), an extension spring (16) is connected between the first supporting seat (10) and the second supporting seat (11), and the first supporting seat (10) and the second supporting seat (11) are connected to the base (2) in a sliding mode along the width direction of the steel bridge frame (17);
the second supporting seat (11) is provided with a buffer device (8), the buffer device (8) comprises a lower pressing block (801), a first screw rod (802), a resisting spring (803), a moving block (804), a first conical gear (805), a second conical gear (807), a supporting platform (808), a second screw rod (809) and a pushing block (810), a cavity (15) is arranged in the second supporting seat (11), the first screw rod (802) is positioned in the cavity (15), one end of the first screw rod is inserted into the inner wall of the cavity (15), the other end of the first screw rod is fixed with the center of the first conical gear (805), the length direction of the first screw rod (802) is consistent with the width direction of the steel bridge beam frame (17), the supporting platform (808) is positioned above the second supporting seat (11), the upper part of the lower pressing block (801) is fixed on the supporting platform (808), the lower part of the lower pressing block (801) is inserted into the second supporting seat (11) and extends into the cavity (15), the bottom surface of the lower pressing block (801) and the top surface of the moving block (804) are inclined planes, the bottom surface of the lower pressing block (801) is in contact with the top surface of the moving block (804), so that the lower pressing block (801) is abutted against the moving block (804), the moving block (804) is sleeved on the first screw (802) and is in threaded fit with the first screw (802), the moving block (804) is in sliding fit with the inner wall of the cavity (15) along the length direction of the first screw (802), and the abutting spring (803) is sleeved on the first screw (802) and is abutted against between the moving block (804) and the side wall of the cavity (15); a through hole (811) is fixed to the top of the cavity (15), the second bevel gear (807) is meshed with the first bevel gear (805), the second screw (809) is vertically arranged, the lower end of the second screw is fixed to the center of the second bevel gear (807), the upper end of the second screw penetrates through the through hole (811), the pushing block (810) is sleeved on the second screw (809) and is in threaded fit with the second screw (809), the pushing block (810) is located in the through hole (811) and is in up-and-down sliding fit with the side wall of the through hole (811), and the pushing block (810) is used for pushing the spring seat (7) upwards so that when the supporting platform (808) is pressed downwards, the pushing block (810) pushes the spring seat (7) to move upwards;
a guide plate (9) is arranged on the outer side of the supporting platform (808), and the guide plate (9) is used for contacting with the edge of the side part of the steel bridge frame (17), so that when the steel bridge frame (17) is installed, the steel bridge frame (17) pushes the guide plate (9) towards two sides to drive the second supporting seat (11) to slide outwards on the base (2);
the leveling device (6) is used for driving the upright post (1) to move up and down so that the installation height of the steel bridge frame (17) is a preset installation height.
2. The underframe structure of a steel bridge according to claim 1, wherein: the guide plate (9) comprises a horizontal section (91), an inclined section (92) and a vertical section (93);
the horizontal section (91), the inclined section (92) and the vertical section (93) are sequentially arranged from top to bottom, the lower end of the inclined section (92) is connected with the vertical section (93), and the upper end of the inclined section is inclined outwards and is connected with the horizontal section (91), so that when the steel bridge frame (17) is installed, the steel bridge frame (17) slides on the inclined section (92);
be fixed with limiting plate (5) on base (2), limiting plate (5) are including vertical board (51) and horizontal board (52), vertical board (51) are located second supporting seat (11) outside and lower extreme are fixed on base (2), the upper end with horizontal board (52) are fixed, horizontal segment (91) are used for horizontal board (52) bottom surface is followed steel bridge roof beam structure (17) width direction slides.
3. The underframe structure of a steel bridge according to claim 1, wherein: the spring seat (7) comprises a welding plate (71), a bottom plate (72) and a buffer spring (73);
the welding plate (71) is used for welding the bottom of the steel bridge frame (17), the bottom plate (72) is located below the welding plate (71), and the buffer spring (73) is fixed between the welding plate (71) and the bottom plate (72);
and positioning columns (14) are fixed on the first supporting seat (10) and the second supporting seat (11), the lower ends of the positioning columns (14) are fixed on the first supporting seat (10) or the second supporting seat (11), and the upper ends of the positioning columns penetrate through the bottom plate (72).
4. The underframe structure of a steel bridge according to claim 3, wherein: first supporting seat (10) with second supporting seat (11) all are provided with two, first supporting seat (10) are located steel bridge roof beam structure (17) bottom both sides, two first supporting seat (10) are located two between second supporting seat (11), two pass through between first supporting seat (10) extension spring (16) are connected.
5. The underframe structure of a steel bridge according to claim 1, wherein: a slot (13) is formed in the bottom of the base (2), and the upright post (1) is inserted into the slot (13) and is connected with the base (2) through a bolt;
the utility model discloses a steel bridge roof beam structure, including steel bridge roof beam structure (17), stand (1) are followed be provided with two, two be provided with auxiliary support piece between stand (1), auxiliary support piece includes arch bar (41) and connecting portion (42), connecting portion (42) are connected arch bar (41) both ends, connecting portion (42) bolted connection be in on stand (1), be fixed with supporting shoe (3) on arch bar (41), supporting shoe (3) support base (2) bottom.
6. The underframe structure of a steel bridge according to claim 1, wherein: the leveling device (6) comprises a mounting plate (61), a clamping mechanism, a first clamping block (63), a second clamping block (64) and a side plate (67);
the clamping mechanism is used for clamping the upright post (1) between the first clamping block (63) and the second clamping block (64), both one side of the first clamping block (63) close to the second clamping block (64) and one side of the second clamping block (64) close to the first clamping block (63) are inclined planes, the lower end of the upright post (1) is provided with a contact surface in contact with the inclined planes, and the contact surfaces are positioned on two opposite sides of the upright post (1);
the side plate (67) is located the stand (1) for another relative both sides of contact surface, first press from both sides tight piece (63) with second press from both sides tight piece (64) sliding connection on side plate (67), mounting panel (61) is fixed on stand (1), mounting panel (61) with first press from both sides tight piece (63), second press from both sides tight piece (64) bolted connection.
7. The underframe structure of a steel bridge according to claim 6, wherein: the clamping mechanism comprises a shell (621), a bidirectional screw rod (622), a motor (623) and a clamping block, the bidirectional screw rod (622) is located in the shell (621), one end of the bidirectional screw rod is rotatably connected with the side of the shell (621), the other end of the bidirectional screw rod penetrates through the shell (621) and is fixed with the motor (623), the shell (621) is close to one side of a first clamping block (63) and a second clamping block (64) and is arranged in an opening manner, the clamping block comprises a first clamping block (6241) and a second clamping block (6242), the first clamping block (6241) and the second clamping block (6242) are sleeved on the bidirectional screw rod (622) and are respectively matched with a left-handed thread and a right-handed thread on the bidirectional screw rod (622), the first clamping block (63) and the second clamping block (64) are penetrated through the opening of the shell (621), the first clamping block (6241) is located outside the second clamping block (64), and the second clamping block (6242) is located outside the first clamping block (63).
8. The underframe structure of a steel bridge according to claim 7, wherein: the side plates (67) are provided with two, the first clamping blocks (63) and the second clamping blocks (64) are located between the two side plates (67), the upright posts (1) are inserted between the first clamping blocks (63), the second clamping blocks (64) and the two side plates (67), and the first clamping blocks (63) and the second clamping blocks (64) are slidably connected to the side plates (67) along the length direction of the bidirectional screw rod (622).
9. The underframe structure of a steel bridge according to claim 8, wherein: waist shape hole (66) have been seted up on mounting panel (61), waist shape hole (66) length direction with two-way lead screw (622) length direction is the same, first clamp piece (63) with threaded hole is seted up at second clamp piece (64) top, so that the bolt is installed waist shape hole (66) with in the threaded hole.
10. The underframe structure of a steel bridge according to claim 9, wherein: the first clamping block (63) and the second clamping block (64) are provided with mounting holes (65) for mounting the first clamping block (63) and the second clamping block (64) on a base plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110067609.0A CN112853930B (en) | 2021-01-19 | 2021-01-19 | Underframe structure of steel bridge frame |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110067609.0A CN112853930B (en) | 2021-01-19 | 2021-01-19 | Underframe structure of steel bridge frame |
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| CN112853930A CN112853930A (en) | 2021-05-28 |
| CN112853930B true CN112853930B (en) | 2021-08-31 |
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| CN111822930A (en) * | 2020-08-17 | 2020-10-27 | 倪菊莲 | Forming and processing technology for bridge steel structure foundation support connecting piece |
| CN211815562U (en) * | 2020-01-18 | 2020-10-30 | 杨文权 | Adjustable pressure-bearing support for bridge expansion device |
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| JPH1060827A (en) * | 1996-08-14 | 1998-03-03 | P S Co Ltd | Shifter for segment block |
| KR20000032357A (en) * | 1998-11-13 | 2000-06-15 | 최한중 | Device of bridge support member using spring |
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| CN111822930A (en) * | 2020-08-17 | 2020-10-27 | 倪菊莲 | Forming and processing technology for bridge steel structure foundation support connecting piece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112853930A (en) | 2021-05-28 |
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