A trestle bridge capable of easily increasing construction interval
By designing the swing drive components of the main bridge and the front guide bridge on the trestle and the mobile trolley, the function of increasing the construction area without moving the main bridge is realized, solving the problems of bulkiness and inconvenience in use of existing equipment, reducing the Cost and processing difficulty.
Patent Information
- Application Number
- CN201911304947.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-12-17
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2039-12-17
AI Technical Summary
The existing ultra-large span self-propelled trest equipment is bulky, inconvenient to use, difficult to process and high cost, and cannot be effectively expanded to 3 construction areas.
A trestle bridge including the main bridge and the front guide bridge is designed. The main bridge is equipped with guide rails in the front and rear directions. The moving trolley can move forward and backward. The rear end of the front guide bridge is hinged to the moving trolley. The up and down swing is achieved through the swing drive assembly, and the construction area is increased. The front guide bridge swings upward and is driven forward by the moving cart, overlapping on the slag, swings upwardly when retracting, and separates from the slag, reducing friction.
It achieves simple structure and convenient use to increase the construction area, keep the length of the main bridge unchanged, and the front guide bridge is retractable to avoid contact with slag, reducing the difficulty and cost of equipment movement, and extending the service life of the equipment.
Smart Images
Figure CN112982140B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of engineering construction equipment, and in particular to a trestle bridge which is easy to increase a construction interval. Background Art
[0002] With the rapid promotion of mechanization in tunnel construction in my country, most of the invert construction areas use self-propelled trestles to replace the original simple trestles. The self-propelled trestles have also increased from one construction section under the trestles to two construction sections. Combined with the construction method of the overall self-propelled invert formwork, the current invert trestles play an important role in tunnel construction, making the invert area have a clearer construction division without affecting the passage of vehicles. In order to further speed up the efficiency of tunnel construction, ensure the construction quality, and increase the concrete curing time, higher requirements are put forward for the invert trestles, and the construction section under the trestles is required to be expanded to 3. Although the existing ultra-large span self-propelled trestles meet the requirements of 3 construction sections under the trestles (generally with a total length greater than 3×12 meters), the equipment is bulky, which makes it inconvenient to use, difficult to process, and costly. Summary of the invention
[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a trestle with a simple structure, convenient use and easy to increase the construction area below.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0005] A trestle bridge that is easy to increase the construction area includes a main bridge and a front approach bridge, the main bridge is provided with guide rails arranged along the front and rear directions, the guide rails are provided with a moving trolley, the rear end of the front approach bridge is hinged to the moving trolley, the main bridge is provided with a swing drive component for driving the front approach bridge to swing up and down, and the front approach bridge can move forward and backward relative to the swing drive component.
[0006] As a further improvement of the above technical solution: the mobile trolley includes a mobile base, an articulated seat, and a floating drive component for driving the articulated seat to float up and down to achieve separation or contact with the main bridge. The mobile base is arranged on the guide rail, and the rear end of the front approach bridge is hinged to the articulated seat.
[0007] As a further improvement of the above technical solution: the mobile base includes a connecting beam and walking wheels arranged at both ends of the connecting beam, the articulated seat includes an outer sleeve beam mounted on the connecting beam, and an articulated support and a floating support arranged on the outer sleeve beam, the outer sleeve beam can float up and down relative to the connecting beam, the rear end of the front approach bridge is hinged to the articulated support, and the floating drive member is connected between the connecting beam and the floating support.
[0008] As a further improvement of the above technical solution: the swing drive assembly includes a support beam and a lifting drive member arranged on both sides of the main bridge, the support beam is supported under the front approach bridge, and the lifting drive member is connected to the end of the support beam.
[0009] As a further improvement of the above technical solution: a plurality of supporting wheels are arranged on the supporting beam, a limiting groove is arranged on the supporting wheel, a limiting portion is arranged on the front approach bridge, and the limiting portion is arranged in the limiting groove.
[0010] As a further improvement of the above technical solution: a transition bridge is hinged at the rear end of the front approach bridge, and the transition bridge is equipped with a swing driving member for realizing up and down swinging.
[0011] As a further improvement of the above technical solution: a hoisting mechanism is provided on at least one side of the front approach bridge.
[0012] Compared with the prior art, the advantages of the present invention are as follows: the trestle bridge disclosed by the present invention is easy to increase the construction interval, the main bridge is provided with a guide rail arranged along the front and rear direction, a moving trolley is arranged on the guide rail, the moving trolley can move forward and backward along the guide rail, the rear end of the front approach bridge is no longer hinged with the main bridge, but is hinged with the moving trolley, and the front approach bridge is swung up and down by a swing drive assembly, and the swing drive assembly does not interfere with the front and rear movement of the front approach bridge; when it is necessary to increase the construction interval below the trestle bridge, the length of the main bridge can remain unchanged, and only the length of the front approach bridge is increased, and the front approach bridge is swung upward by a larger angle under the action of the swing drive assembly to avoid contact with the slag during the forward movement, and then the moving trolley drives the front approach bridge to move forward and extend, and after the front end of the front approach bridge is extended into place, the front approach bridge is swung downward under the action of the swing drive assembly so that the front end is overlapped on the slag, so that the construction interval below can be increased, and the vehicles on the trestle bridge can pass normally without the main bridge moving; when it is necessary to retract the front approach bridge, the front approach bridge is swung upward under the action of the swing drive assembly to separate from the slag, and then the moving trolley drives the front approach bridge to move backward. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the trestle that is easy to increase the construction area when it is at a first swing angle.
[0014] Figure 2 It is a structural schematic diagram of the trestle that is easy to increase the construction area when it is at a first swing angle.
[0015] Figure 3 It is a structural schematic diagram of the trestle bridge of the present invention, which is easy to increase the construction area, when it is in a retracted state.
[0016] Figure 4 It is a schematic diagram of the main structure of the front approach bridge in the present invention.
[0017] Figure 5It is a schematic diagram of the top view of the front approach bridge in the present invention.
[0018] Figure 6 It is a side structural schematic diagram of the mobile vehicle in the present invention.
[0019] Figure 7 It is a schematic diagram of the top view of the structure of the mobile vehicle in the present invention.
[0020] Figure 8 It is a side structural schematic diagram of the swing drive assembly in the present invention.
[0021] The numbers in the figure represent: 1. main bridge; 11. main beam; 12. cross beam; 13. bridge deck structure; 2. front approach bridge; 21. limit part; 3. guide rail; 4. mobile trolley; 41. mobile base; 411. connecting beam; 412. walking wheel; 42. articulated seat; 421. outer sleeve beam; 422. articulated support; 423. floating support; 43. floating drive member; 5. swing drive assembly; 51. supporting beam; 52. lifting drive member; 53. supporting wheel; 531. limit groove; 6. transition bridge; 61. swing drive member; 7. rear approach bridge. DETAILED DESCRIPTION
[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] Figures 1 to 8 An embodiment of a trestle with an easy-to-add construction section of the present invention is shown. The trestle with an easy-to-add construction section of this embodiment includes a main bridge 1 and a front approach bridge 2. The main bridge 1 is provided with a guide rail 3 arranged along the front and rear directions, and a moving trolley 4 is provided on the guide rail 3. The rear end of the front approach bridge 2 is hinged to the moving trolley 4. The main bridge 1 is provided with a swing driving assembly 5 for driving the front approach bridge 2 to swing up and down, and the front approach bridge 2 can move forward and backward relative to the swing driving assembly 5. Among them, the main bridge 1 includes two rows of main beams 11, multiple cross beams 12 arranged between the two rows of main beams 11, and a bridge deck structure 13 arranged at both ends of the cross beams 12. In this embodiment, the guide rail 3 is arranged on the inner web of the main beam 11. Of course, in other embodiments, the guide rail 3 can also be arranged on the outer side, inner side of the two bridge deck structures 13, or the lower side of the cross beam 12, which will not affect the passage of vehicles and other construction equipment through the main bridge 1; in this embodiment, the rear end of the front approach bridge 2 is located above the bridge deck structure 13. Of course, in other embodiments, the front approach bridge 2 can also be arranged below the bridge deck structure 13 or basically flush; the mobile car 4 can be self-powered to achieve forward and backward movement, or a driving force can be set on the main bridge 1 to drive the mobile car 4 to move forward and backward, which can change the front and rear position relationship between the front approach bridge 2 and the main bridge 1.
[0024] The trestle with easy increase of construction interval is provided with a guide rail 3 arranged in the front-to-back direction on the main bridge 1, and a moving trolley 4 is arranged on the guide rail 3. The moving trolley 4 can move forward and backward along the guide rail 3. The rear end of the front approach bridge 2 is no longer hinged to the main bridge 1, but is hinged to the moving trolley 4. At the same time, the front approach bridge 2 is swung up and down by a swing driving component 5, and the swing driving component 5 does not interfere with the front approach bridge 2. When it is necessary to increase the construction interval under the trestle, the length of the main bridge 1 can remain unchanged, and only the length of the front approach bridge 2 is increased. The front approach bridge 2 is swung upward by a larger angle under the action of the swing driving component 5 to avoid To avoid contact with the slag during the forward movement, the mobile trolley 4 drives the front approach bridge 2 to move forward and extend. After the front end of the front approach bridge 2 is extended into place, the front approach bridge 2 swings downward under the action of the swing drive component 5 to make the front end overlap on the slag, so as to increase the construction area below. The front approach bridge 2 continuously extends and retracts within the travel range to meet any overlap with the slag at the front end. Vehicles on the trestle can pass normally, and the main bridge 1 does not need to move. When the front approach bridge 2 needs to be retracted, the front approach bridge 2 swings upward under the action of the swing drive component 5 to separate from the slag, and then the mobile trolley 4 drives the front approach bridge 2 to move backward.
[0025] Furthermore, in this embodiment, the mobile vehicle 4 includes a mobile base 41, an articulated seat 42, and a floating driving member 43 for driving the articulated seat 42 to float up and down to achieve separation or contact with the main bridge 1 (specifically, the bridge deck structure 13 in this embodiment). The mobile base 41 is arranged on the guide rail 3, and the rear end of the front approach bridge 2 is hinged to the articulated seat 42. When the front approach bridge 2 needs to be extended or retracted, the floating driving member 43 drives the articulated seat 42 and the rear end of the front approach bridge 2 to float up as a whole and separate from the bridge deck structure 13, thereby reducing the friction resistance between the front approach bridge 1 and the main bridge 1 during forward and backward movement; when the front approach bridge 2 is extended or retracted into place, the floating driving member 43 drives the articulated seat 42 and the rear end of the front approach bridge 2 to sink as a whole and contact the bridge deck structure 13, so that the load of the rear end of the front approach bridge 2 is directly transferred to the main bridge 1, avoiding excessive load on the mobile base 41 and the guide rail 3. The structure is reasonable and reliable, which is conducive to reducing damage and extending the service life of the equipment. Among them, the floating driving member 43 is preferably a hydraulic cylinder, etc., which can achieve the up and down floating of the articulated seat 42.
[0026] Furthermore, in this embodiment, the mobile base 41 includes a connecting beam 411 and walking wheels 412 arranged at both ends of the connecting beam 411, the articulated base 42 includes an outer sleeve beam 421 sleeved on the connecting beam 411, and an articulated support 422 and a floating support 423 arranged on the outer sleeve beam 421, the outer sleeve beam 421 can float up and down relative to the connecting beam 411, or in other words, there is a gap between the inner portion of the outer sleeve beam 421 and the connecting beam 411 in the vertical direction, the rear end of the front approach bridge 2 is articulated with the articulated support 422, and the floating driving member 43 is connected between the connecting beam 411 and the floating support 423. The connecting beam 411 and the outer sleeve beam 421 adopt a sleeved structure, the connecting beam 411 can reliably drive the outer sleeve beam 421 to move forward and backward, and at the same time, the outer sleeve beam 421 can float up and down relative to the connecting beam 411 without being separated from each other, which is simple and reliable.
[0027] Furthermore, in this embodiment, the swing drive assembly 5 includes a support beam 51 and a lifting drive member 52 which is arranged on both sides of the main bridge 1 (specifically, the front ends of two rows of main beams 11 in this embodiment), the support beam 51 is supported below the front approach bridge 2, and the lifting drive member 52 is connected to the end of the support beam 51. When the lifting drive member 52 drives the support beam 51 to rise, the support beam 51 can drive the front approach bridge 2 to swing upward; conversely, when the lifting drive member 52 drives the support beam 51 to descend, the support beam 51 can drive the front approach bridge 2 to swing downward, and the support beam 51 will not interfere with the front and rear movement of the front approach bridge 2, and the structure is simple and the reliability is good. Among them, the lifting drive member 52 can be, for example, a hydraulic cylinder, etc., which can drive the support beam 51 to rise and fall. Of course, in other embodiments, the swing drive assembly 5 can also be other forms, which can drive the front approach bridge 2 to swing up and down without interfering with the front and rear movement of the front approach bridge 2.
[0028] Furthermore, in this embodiment, a plurality of supporting wheels 53 are provided on the supporting beam 51, and a limiting groove 531 is provided on the supporting wheel 53. A limiting portion 21 is provided on the front approach bridge 2, and the limiting portion 21 is arranged in the limiting groove 531. The supporting wheels 53 can reduce the friction resistance between the supporting beam 51 and the front approach bridge 2 on the one hand, so that the telescopic movement of the front approach bridge 2 is smoother, and on the other hand, can provide a limit for the telescopic movement of the front approach bridge 2 to prevent the front approach bridge 2 from deviating left and right.
[0029] Furthermore, in this embodiment, a transition bridge 6 is hingedly connected to the rear end of the front approach bridge 2, and the transition bridge 6 is provided with a swinging driving member 61 for realizing up and down swinging. Since there is a height difference between the rear end of the front approach bridge 2 and the main bridge 1 (specifically the bridge deck structure 13 in this embodiment), by providing a transition bridge 6 that can swing up and down, a smooth connection between the rear end of the front approach bridge 2 and the bridge deck structure 13 can be realized, so that vehicles and other construction equipment can pass smoothly between the rear end of the front approach bridge 2 and the bridge deck structure 13. Among them, the swinging driving member 61 is preferably a hydraulic cylinder or the like.
[0030] As a preferred technical solution, in this embodiment, at least one side of the front approach bridge 2 is provided with a lifting component (not shown in the figure, for example, it can be an electric hoist, a cantilever crane, a gantry crane, etc.). The lifting component is arranged on the side of the front approach bridge 2 and with the help of the forward and backward movement of the mobile trolley 4, it is convenient to install the materials (such as arch frames, etc.) required for the tunnel construction below, and it does not affect the vehicles and other construction equipment passing through the front approach bridge 2. The lifting component can be fixed on the front approach bridge 2, or it can be a structural form that can move freely forward and backward relative to the front approach bridge 2.
[0031] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.
Claims
1. A trestle bridge that is easy to increase the construction area, comprising a main bridge (1) and a front approach bridge (2), characterized in that: The main bridge (1) is provided with a guide rail (3) arranged in a front-to-rear direction, a moving trolley (4) is provided on the guide rail (3), a rear end of the front approach bridge (2) is hinged to the moving trolley (4), the main bridge (1) is provided with a swing drive assembly (5) for driving the front approach bridge (2) to swing up and down, and the front approach bridge (2) can move forward and backward relative to the swing drive assembly (5); the moving trolley (4) comprises a moving base (41), an articulated seat (42), and a floating drive member (43) for driving the articulated seat (42) to float up and down to achieve separation from or contact with the main bridge (1), the moving base (41) is provided on the guide rail (3), the rear end of the front approach bridge (2) is hinged to the articulated seat (42); the moving base (41) comprises a connecting beam (411) and walking wheels (412) provided at both ends of the connecting beam (411), the articulated seat (42) The invention relates to a main bridge (1) comprising an outer sleeve beam (421) sleeved on the connecting beam (411), and an articulated support (422) and a floating support (423) arranged on the outer sleeve beam (421); the outer sleeve beam (421) can float up and down relative to the connecting beam (411); the rear end of the front approach bridge (2) is hinged to the articulated support (422); the floating drive member (43) is connected between the connecting beam (411) and the floating support (423); the swing drive assembly (5) comprises a supporting beam (51) and lifting drive members (52) arranged on both sides of the main bridge (1); the supporting beam (51) is supported below the front approach bridge (2); the lifting drive member (52) is connected to the end of the supporting beam (51); the rear end of the front approach bridge (2) is hinged with a transition bridge (6); the transition bridge (6) is equipped with a swing drive member (61) for realizing up and down swinging.
2. The trestle bridge with easy construction area increase according to claim 1, characterized in that: A plurality of supporting wheels (53) are provided on the supporting beam (51).
3. The trestle bridge with easy construction area increase according to claim 2, characterized in that: The supporting wheel (53) is provided with a limiting groove (531), the front approach bridge (2) is provided with a limiting portion (21), and the limiting portion (21) is arranged in the limiting groove (531).
4. The trestle bridge with easy construction area increase according to claim 1, characterized in that: At least one side of the front approach bridge (2) is provided with a hoisting mechanism.