Bottom basket elevation automatic adjusting mechanism for bridge fabrication machine

Abstract

The invention discloses a bottom basket elevation automatic adjusting mechanism for a bridge fabrication machine, and particularly relates to the technical field of bridge construction, the bottom basket elevation automatic adjusting mechanism comprises a suspension system, a hydraulic jacking system and a cushion block structure, the suspension system is used for connecting a bottom basket structure and a main beam structure, the suspension system comprises a sling and a sling fixing frame, and the hydraulic jacking system comprises a jacking hydraulic cylinder; the cushion block structure is arranged between the sling fixing frame and the suspension system and comprises a fixed wedge block and a movable wedge block, and a heater is arranged in the fixed wedge block. When the external environment temperature is suddenly reduced, the fixed wedge block and the movable wedge block can be heated by means of the heater, so that the fixed wedge block and the movable wedge block are expanded, the supporting strength on the sling fixing frame is increased, the influence on supporting of the sling fixing frame caused by looseness due to volume shrinkage of the fixed wedge block and the movable wedge block is avoided, and the safety of equipment is improved; and an area near the position can be prevented from being frozen.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and more specifically to an automatic height adjustment mechanism for a bottom basket of a bridge-building machine. Background Art

[0002] Large-span continuous beams are widely used in the development of modern railway transportation systems. The construction of the bridge-building machine is to assemble the bridge-building machine at one time, and use the automatic walking, lifting, and plane longitudinal and transverse adjustment functions of the bridge-building machine to adjust the direction, level, and height of the bridge-building machine to the designed position. After meeting the construction specifications and technical standards, pour the concrete at the cantilever end of the continuous beam. The continuous beam intelligent bridge-building machine is composed of a load-bearing structure, a suspension system, an anchoring system, a traveling system, a protection system, and an intelligent control system. The load-bearing structure is the main load-bearing component of the bridge-building machine. It bears the entire weight of the construction equipment and cast-in-place segmental concrete, and transmits the load to the completed beam through the fulcrum and anchoring device. After the pouring is completed, the main beam and track of the bridge-building machine automatically move forward and are fixed to carry out the construction of the next segment, and the cycle continues until the cantilever pouring is completed.

[0003] In the structure of the bridge-building machine, the load-bearing structure mainly includes the main beam and the bottom basket structure. The bottom basket structure is connected to the main beam through a suspension system. Since the bottom basket mainly bears the bottom mold structure, the bottom basket needs to be separated downward away from the box beam during demoulding and traveling. At this time, the bottom basket is not at the standard height. Therefore, after the bridge-building machine travels to a new position, the bottom basket needs to be adjusted in elevation.

[0004] The bottom basket elevation adjustment system is mainly used to adjust the height of the suspension system connected to the bottom basket. The lifting equipment of the bridge-building machine or other lifting equipment (such as a crane) set up on the ground is used to lift or lower the sling assembly connected to the bottom basket to significantly adjust the bottom basket height. However, the above adjustment error is large. Therefore, it is also necessary to use the hydraulic jacking system set on the main beam to make a small range of height adjustment on the sling fixing frame structure (also set on the main beam) used to fix the sling assembly to ensure that the bottom basket can accurately reach the standard height.

[0005] However, for large bridges, the amount of concrete poured is large, the weight of the single box girder is large, the pouring cycle is long, and the bottom basket load time is long. The hydraulic jacking system used to support the sling fixing frame needs to withstand high pressure for a long time, which can easily cause damage to the hydraulic system. Especially during the pouring process, if the hydraulic system fails, it may even easily cause the bottom basket to drop and the bottom membrane to separate from the side formwork, causing a construction accident. Therefore, in order to ensure construction safety, while using the hydraulic jacking system to stably support the sling fixing frame, it is also necessary to add a pad assembly between the sling fixing frame and the main beam structure. Among them, in order to facilitate the adjustment of the support height of the pad, it is preferred to use at least two sets of wedge-shaped pad structures for adjustment.

[0006] Among them, in order to avoid squeezing damage to the main beam structure or the cable fixing frame structure of the bridge-building machine, the hardness of the pad structure needs to be lower than that of the cable fixing frame structure and the main beam structure to avoid damage to the cable fixing frame structure and the main beam structure. Under normal construction conditions, after the pad structure is added, due to the strong pressure of the cable fixing frame, there is a strong friction between the two. Therefore, the pad structure will be in close contact with the cable fixing frame and stably support it, especially the wedge-shaped pad structure. Under strong pressure and high friction, the two sets of wedge blocks will be more stable.

[0007] However, in some extreme environments, such as environments with large temperature differences between day and night, or environments with rapid temperature drops in a short period of time, the initially tightly installed pad structure will shrink slightly due to the influence of ambient temperature, and the pressure of the sling fixing structure will begin to transfer to the auxiliary support hydraulic jacking system. At this time, the pad structure lacks sufficient pressure, resulting in instability, especially for the wedge-shaped pad structure. In the absence of sufficient pressure and friction, two adjacent groups of wedge block structures are prone to loosening, which further leads to a reduction in the support height of the wedge-shaped pad structure (because the support height of the wedge-shaped pad needs to be adjusted by controlling the relative movement of the two when in use, the two cannot be directly fixed), which in turn causes the pressure of the sling fixing structure to be gradually transferred to the hydraulic jacking system, resulting in a sudden change in the gravity of the hydraulic jacking system. Especially in low temperature environments, the hydraulic jacking system is more prone to failure, which affects construction and even causes accidents. Summary of the invention

[0008] The present invention provides an automatic height adjustment mechanism for a bottom basket of a bridge-building machine, and aims to solve the problem that, in the existing adjustment mechanism using a cushion block structure, in an environment of rapid temperature drop, the cushion block structure initially tightly installed undergoes relative contraction due to the temperature drop, thereby affecting the supporting effect.

[0009] To achieve the above object, the present invention provides the following technical solutions: an automatic adjustment mechanism for the elevation of a bottom basket for a bridge-building machine, comprising a suspension system, a hydraulic jacking system and a pad structure, wherein the suspension system is used to connect the bottom basket structure and the main beam structure; The suspension system includes a sling and a sling fixing frame. The bottom end of the sling is connected to the crossbeam of the bottom basket structure, the top end of the sling is connected to the sling fixing frame through a sling fixing device, and the sling fixing frame is connected to the crossbeam of the main beam structure through a hydraulic jacking system. The hydraulic jacking system includes a jacking hydraulic cylinder, which is fixedly installed on the crossbeam of the main beam structure, and a sling fixing frame is fixedly installed on the output end of the jacking hydraulic cylinder; The pad structure is arranged between the sling fixing frame and the suspension system. The pad structure includes a fixed wedge and a movable wedge. The fixed wedge is fixedly installed on the jacking fixing frame. The movable wedge is arranged between the sling fixing frame and the fixed wedge. Mutually matching wedge surfaces are arranged between the movable wedge and the fixed wedge. A heater is arranged inside the fixed wedge. The heater is a heating element evenly distributed in the fixed wedge.

[0010] In a preferred embodiment, the pad block structure also includes a transverse movement controller, which is fixedly arranged on the main beam structure. The output end of the transverse movement controller is connected to the movable wedge block through a sliding seat. A vertical guide rail is arranged at the position of the movable wedge block corresponding to the transverse movement controller, and the vertical guide rail is vertically slidably matched with the sliding seat.

[0011] In a preferred embodiment, a pressure sensor is further provided between the output end of the lateral movement controller and the sliding seat, and the pressure sensor is used to monitor the thrust of the output end of the lateral movement controller on the sliding seat.

[0012] In a preferred embodiment, the lateral movement controller is fixedly connected to the main beam structure through a support frame, a protective cover is provided on the support frame, and the lateral movement controller, the lifting hydraulic cylinder and the cushion block structure are all located in the protective cover.

[0013] In a preferred embodiment, a first additional metal plate and a second additional metal plate are respectively arranged at the mating surfaces of the fixed wedge block and the movable wedge block, a wedge surface is arranged between the first additional metal plate and the second additional metal plate, a groove structure is arranged between the second additional metal plate and the first additional metal plate, and the groove structure is a cylindrical groove structure, and a guide rod structure is arranged between the cylindrical grooves between the first additional metal plate and the second additional metal plate.

[0014] In a preferred embodiment, the hardness of the first additional metal plate and the second additional metal plate is greater than the hardness of the fixed wedge and the movable wedge, and the hardness of the guide rod structure is less than the hardness of the first additional metal plate and the second additional metal plate.

[0015] In a preferred embodiment, a rotating wheel is provided at a position on the fixed wedge block corresponding to the end of the guide rod structure, and a plurality of groups of rubber rings are provided on the rotating wheel. The rubber rings fit the circumferential surface of the guide rod structure, and a convex step is provided at a position on the rotating wheel corresponding to the end of the guide rod structure. The convex step is used to limit the end of the guide rod structure.

[0016] In a preferred embodiment, a screw shaft is fixedly connected to the rotating wheel, a rotating sleeve is fixedly installed on the bottom of the sliding seat, a screw sleeve is rotatably installed inside the rotating sleeve, a one-way bearing is arranged between the screw sleeve and the rotating sleeve, and a spiral pattern is arranged on the screw shaft, which cooperates with the screw sleeve.

[0017] In a preferred embodiment, the adjustment mechanism also includes a distance measuring device, which includes a distance measuring device transmitter and a distance measuring device receiver. The distance measuring device transmitter is arranged on a sling fixing frame, and the distance measuring device transmitter is arranged in close contact with the sling, and the distance measuring device receiver is fixedly installed at the bottom of the sling.

[0018] In a preferred embodiment, an instrument housing is fixedly mounted on a sling fixing frame, a rangefinder transmitter is mounted inside the instrument housing, an elastic arc frame is arranged in the instrument housing, the elastic arc frame is rotatably mounted inside the instrument housing, two sides of the rangefinder transmitter are rotatably connected to two ends of the elastic arc frame through rotating shafts respectively, and the rotation axis of the elastic arc frame, the rotation axis between the rangefinder transmitter and the elastic arc frame, and the signal transmission direction line of the rangefinder transmitter are perpendicular to each other, at least two groups of guide clamps are fixedly mounted on the rangefinder transmitter, the guide clamps are in a clamping state with respect to the outer wall of the sling, and positioning protrusions contacting the sling are arranged in the inner wall of the guide clamps, and at the same time, the elastic arc frame is an elastic member.

[0019] The beneficial effects of the present invention are as follows: the present invention inserts the movable wedge into the gap between the fixed wedge and the sling fixing frame to provide stable support for the sling fixing frame, and the lifting hydraulic cylinder only serves as an auxiliary support, thereby forming effective protection for the lifting hydraulic cylinder; when the external ambient temperature suddenly drops, the fixed wedge and the movable wedge can be heated by means of a heater to expand the two, thereby increasing the support for the sling fixing frame, avoiding the two from shrinking in volume and becoming loose, which affects the support for the sling fixing frame, thereby improving the safety of the equipment; in low temperature and severe weather conditions such as rain, snow, and hail, the heating of the fixed wedge and the movable wedge by the heater can also ensure that the area near the position will not be frozen, thereby avoiding the problem of difficult operation due to structural adhesion caused by freezing in subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the bridge-building machine of the present invention.

[0021] Figure 2 It is a connection state diagram between the bottom basket structure and the main beam structure of the present invention.

[0022] Figure 3 This is a diagram of the installation position of the adjustment mechanism of the present invention.

[0023] Figure 4 This is a schematic diagram of the overall structure of the adjustment mechanism using manual auxiliary adjustment in the present invention.

[0024] Figure 5 This is a front view of the adjustment mechanism using manual auxiliary adjustment in the present invention.

[0025] Figure 6 This is a schematic diagram of the regulating mechanism using self-controlled regulation in the present invention.

[0026] Figure 7 This is a schematic diagram of the structure in which the main driving device of the adjustment mechanism is placed in the protective cover of the present invention.

[0027] Figure 8 It is a top view of the connection state between the lateral movement controller and the movable wedge block of the present invention.

[0028] Fig. 9 It is a structural schematic diagram of the improved wedge structure in the adjustment mechanism based on manual auxiliary adjustment of the present invention.

[0029] Fig.10 It is a schematic diagram of the cooperation between the movable wedge block and the guide rod structure of the present invention.

[0030] Fig.11 It is a schematic diagram of the structure of the improved wedge structure in the adjusting mechanism based on automatic adjustment of the present invention.

[0031] Fig.12 It is a schematic diagram of the composition of the distance measuring device of the present invention.

[0032] Fig.13 The present invention is a schematic diagram of the structure of the improved installation method of the rangefinder transmitter.

[0033] Fig.14 The figure is a top view of the installation state of the rangefinder transmitter of the present invention in the instrument housing.

[0034] The accompanying drawings are marked as follows: 1, suspension system; 11, sling; 12, sling fixing frame; 13, sling fixing device; 2, hydraulic jacking system; 21, jacking hydraulic cylinder; 22, jacking fixing frame; 3, cushion structure; 31, fixed wedge block; 311, first additional metal plate; 32, movable wedge block; 321, second additional metal plate; 33, heater; 34, traverse controller; 341, sliding seat; 3411, pressure sensor Sensor; 342, rotating sleeve; 35, support frame; 351, protective cover; 36, guide rod structure; 37, rotating wheel; 371, screw shaft; 372, screw sleeve; 373, one-way bearing; 4, main beam structure; 5, bottom basket structure; 6, beam body; 7, distance measuring equipment; 71, distance meter transmitter; 72, distance meter receiver; 73, instrument housing; 74, elastic arc frame; 75, guide clamp; 751, positioning bump. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0036] Refer to the instruction manual Figures 1 to 14 A bottom basket elevation automatic adjustment mechanism for a bridge-building machine comprises a suspension system 1, a hydraulic jacking system 2 and a pad structure 3. The suspension system 1 is used to connect a bottom basket structure 5 and a main beam structure 4, wherein the main beam structure 4 is arranged on a beam body 6 through a running system and an anchoring system, that is, according to demand, when running is required, the anchoring system is released to drive the main beam structure 4 and the bottom basket structure 5 to run, and when fixing is required, the main beam structure 4 and the bottom basket structure 5 are re-anchored, and the bottom basket structure 5 is suspended by the suspension system 1 below the suspension system 1 to support a bottom formwork.

[0037] Among them, the main beam structure 4 and the bottom basket structure 5 are respectively composed of a front cross beam, a rear cross beam and a longitudinal beam for connecting the front and rear cross beams, and the front and rear cross beams and the longitudinal beams of the main beam structure 4 are connected to the load-bearing trusses to form the main beam structure 4 together. The bottom basket structure 5 corresponds to the front and rear cross beams of the main beam structure 4, and is respectively connected through the suspension system 1. Since this embodiment mainly explains the subtle adjustment plan for the height of the main beam structure 4, the specific structures of the above-mentioned main beam structure 4 and the bottom basket structure 5 will not be explained in detail.

[0038] The suspension system 1 includes a sling 11 and a sling fixing frame 12. The bottom end of the sling 11 is connected to the cross beam of the bottom basket structure 5. The top end of the sling 11 is connected to the sling fixing frame 12 through a sling fixing device 13. The sling fixing frame 12 is connected to the cross beam of the main beam structure 4 through a hydraulic jacking system 2. It should be noted that the front and rear cross beams of the bottom basket structure 5 are each provided with multiple groups of suspension systems 1. The sling fixing frames 12 of each group of suspension systems 1 are arranged at corresponding positions of the front and rear cross beams of the main beam structure 4 to form an effective suspension fixation, and each group of suspension systems 1 is correspondingly provided with at least one group of hydraulic jacking systems 2 and one group of pad structures 3.

[0039] The hydraulic jacking system 2 includes a jacking hydraulic cylinder 21 and a jacking fixed frame 22. The jacking fixed frame 22 is fixedly installed on the cross beam of the main beam structure 4. The jacking hydraulic cylinder 21 is fixedly installed on the jacking fixed frame 22. The sling fixed frame 12 is fixedly installed on the output end of the jacking hydraulic cylinder 21.

[0040] It should be noted that, in the present embodiment, the sling 11 can select a sling structure with a plurality of pin holes arranged on the sling structure, and the sling fixer 13 adopts a pin shaft structure. When it is necessary to adjust the height of the main beam structure 4 over a large range, the lifting equipment provided by the bridge-building machine or other lifting equipment arranged on the ground is used to lift all the slings 11 in a unified manner. After the nearest pin hole is aligned with the corresponding locking position on the sling fixing frame 12, the pin shaft is installed, and the sling 11 and the sling fixing frame 12 can be connected and locked, and then the height of the sling fixing frame 12 can be fine-tuned with the help of the lifting hydraulic cylinder 21 to ensure that the bottom basket structure 5 is accurately adjusted to the standard height.

[0041] The pad structure 3 is arranged between the sling fixing frame 12 and the suspension system 1. Specifically, the pad structure 3 includes a fixed wedge 31 and a movable wedge 32. The fixed wedge 31 is fixedly installed on the jacking fixing frame 22. The movable wedge 32 is arranged between the sling fixing frame 12 and the fixed wedge 31, and mutually matching wedge surfaces are arranged between the movable wedge 32 and the fixed wedge 31. A heater 33 is arranged inside the fixed wedge 31. The heater 33 is an electric heating structure, such as an electric heating rod, an electric heating wire, etc. The heating element of the electric heating structure is evenly distributed in the fixed wedge 31 so as to facilitate uniform heating of the fixed wedge 31 and the movable wedge 32.

[0042] In the above embodiment, when the jacking hydraulic cylinder 21 is used to fine-tune the position of the sling fixing frame 12 to the standard height, the main beam structure 4 is basically at the standard height, and then the pad structure 3 needs to be installed to support the sling fixing frame 12 (that is, the bottom basket structure 5) for a long time with the help of the pad structure 3. Specifically, when the jacking hydraulic cylinder 21 has completed the height adjustment of the sling fixing frame 12, the movable wedge 32 is inserted into the gap between the fixed wedge 31 and the sling fixing frame 12, and the movable wedge 32 is inserted into the gap between the fixed wedge 31 and the sling fixing frame 12, and the movable wedge 32 is inserted into the gap between the fixed wedge 31 and the sling fixing frame 12 by means of hydraulic drive or hammering, etc. In this way, the movable wedge 32 has a tendency to lift upward by virtue of the wedge surface between it and the fixed wedge 31, and then forms a close contact with the sling fixing frame 12, thereby realizing stable support for the sling fixing frame 12, and when the movable wedge 32 is subjected to the downward pressure of the sling fixing frame 12, the friction between the wedge surface between it and the fixed wedge 31 is large enough, and it will not move out, so it can maintain stable support, and the lifting hydraulic cylinder 21 only serves as an auxiliary support, forming an effective protection for the lifting hydraulic cylinder 21, and the upper The above operation on the movable wedge block 32 will not cause the lifting of the sling fixing frame 12, and therefore will not affect the height adjustment accuracy of the bottom basket structure 5. In harsh environments, especially in the case of sudden temperature changes, when the external ambient temperature suddenly drops (the change of the external ambient temperature is judged according to the temperature measurement system in the bridge-building machine monitoring system, or a corresponding temperature sensor is directly set near the hydraulic jacking system 2 to obtain temperature information), the fixed wedge block 31 and the movable wedge block 32 can be heated by means of the heater 33 to prevent the fixed wedge block 31 and the movable wedge block 32 from loosening due to volume shrinkage caused by temperature reduction and affecting the support of the sling fixing frame 12. After adjusting the height, the bottom basket structure 5 is provided with stable and strong support, the function of the jacking hydraulic cylinder 21 as the main supporting component is cancelled, and the jacking hydraulic cylinder 21 is effectively protected. At the same time, it can also prevent the main beam structure 4 from falling or other unstable phenomena caused by the failure of the jacking hydraulic cylinder 21 during the pouring process, thereby affecting the pouring, thereby improving the safety of the equipment.

[0043] At the same time, in low temperatures and severe weather conditions such as rain, snow and hail, the heating of the fixed wedge 31 and the movable wedge 32 by the heater 33 can also ensure that the area near the position will not be frozen, thereby avoiding the problem of difficult operation due to structural adhesion caused by freezing in subsequent operations.

[0044] In the above embodiment, the cushion block structure 3 is mainly operated manually to achieve fine adjustment of the height of the bottom basket structure 5. In addition, in order to facilitate operation, this embodiment also provides a solution that can automatically operate the cushion block structure 3. For details, refer to the attached manual of the specification. Figures 6 to 8 The pad structure 3 also includes a transverse movement controller 34, which is fixedly arranged on the main beam structure 4. The output end of the transverse movement controller 34 is connected to the movable wedge 32 through a sliding card seat 341. The movable wedge 32 is provided with a vertical guide rail at the position corresponding to the transverse movement controller 34. The vertical guide rail and the sliding card seat 341 are vertically slidably matched, and then the movable wedge 32 can be driven to move with the help of the transverse movement controller 34. At the same time, with the help of the connection between the sliding card seat 341 and the vertical guide rail, it will not affect the movable wedge 32 in the process of deepening. The vertical movement generated during the process, and the lateral movement controller 34 is preferably a hydraulic cylinder device, which can provide sufficient propulsion force. At the same time, a pressure sensor 3411 is also arranged between the output end of the lateral movement controller 34 and the sliding card seat 341. The pressure sensor 3411 is used to monitor the thrust of the output end of the lateral movement controller 34 on the sliding card seat 341. After the movable wedge block 32 is completely in contact with the sling fixing frame 12 and forms a certain supporting force, the pressure of the pressure sensor 3411 reaches the corresponding standard value, and the advancement of the movable wedge block 32 can be stopped.

[0045] It should be noted that even if the lateral controller 34 is used to control the movement of the movable wedge 32, because the movable wedge 32 needs to have a vertical movement, it must be connected with the sliding seat 341, which leads to an assembly gap between the movable wedge 32 and the lateral controller 34. Therefore, the movable wedge 32 may still be affected by temperature and shrink, which affects the supporting effect. Therefore, even if the automatic adjustment equipment is used, the heater 33 is required to heat the fixed wedge 31 and the movable wedge 32 to ensure that the two can stably support the sling fixing frame 12. In this embodiment, it is mainly based on the lifting hydraulic cylinder 21 to heat the fixed wedge 31 and the movable wedge 32. The height of the sling fixing frame 12 is fine-tuned, and other lifting equipment is required to adjust the height of the main beam structure 4 over a large range. Therefore, the adjustment range of the jacking hydraulic cylinder 21 in this embodiment is not large, and the required support height range between the fixed wedge block 31 and the movable wedge block 32 is also not large. In order to further improve the degree of automation control of the equipment, automatic locking control of the sling 11 and the sling fixing frame 12 can also be used. For example, a cylinder or hydraulic cylinder or other structure for driving the sling fixer 13 to move is set on the sling fixing frame 12, and the pin shaft is automatically inserted after the pin hole is aligned. At the same time, other types of slings 11 and sling fixing frames 12 can also be used.

[0046] In addition, refer to the instructions attached Figure 6 and Figure 7 The lateral movement controller 34 is fixedly connected to the main beam structure 4 through a support frame 35, and a protective cover 351 is arranged on the support frame 35. The lateral movement controller 34, the lifting hydraulic cylinder 21 and the cushion structure 3 are all located in the protective cover 351. Therefore, when the temperature is low and the heater 33 is enabled, the equipment within the range of the protective cover 351 can also be insulated and protected to prevent the equipment from being affected by freezing and causing failure or damage.

[0047] In the above embodiment, since the specific height of the main beam structure 4 is different each time the adjustment is performed, the degree of cooperation between the movable wedge block 32 and the fixed wedge block 31 is also different, that is, the size of the actual contact surface of the fixed wedge block 31 and the movable wedge block 32 will be different. At the same time, in order to prevent the pad structure 3 from causing damage to the sling fixing frame 12 or the suspension system 1, the actual hardness of the fixed wedge block 31 and the movable wedge block 32 is lower than that of the sling fixing frame 12 and the main beam structure 4. After long-term use, the fixed wedge block 31 and the movable wedge block 32 will produce a slight extrusion deformation. Since the matching contact surface of the fixed wedge block 31 and the movable wedge block 32 is different each time, the actual deformation area will be different. Long-term use will easily lead to the formation of an "uneven" structure between the matching surfaces of the fixed wedge block 31 and the movable wedge block 32 (the deformation area is different each time, and the edge of the deformation area is relatively protruding, so after many times, multiple uncontrollable protrusions are formed), affecting the tightness of the matching between the fixed wedge block 31 and the movable wedge block 32. For this reason, the present embodiment also provides the following scheme. For details, refer to the attached specification. Figures 9 to 11 The first additional metal plate 311 and the second additional metal plate 321 are respectively arranged at the mating surfaces of the fixed wedge block 31 and the movable wedge block 32, a wedge-shaped surface is arranged between the first additional metal plate 311 and the second additional metal plate 321, a groove structure is arranged between the second additional metal plate 321 and the first additional metal plate 311, and the groove structure is a cylindrical groove structure, and a guide rod structure 36 is arranged between the cylindrical grooves between the first additional metal plate 311 and the second additional metal plate 321, the hardness of the first additional metal plate 311 and the second additional metal plate 321 is greater than the hardness of the fixed wedge block 31 and the movable wedge block 32, and the hardness of the guide rod structure 36 is less than the hardness of the first additional metal plate 311 and the second additional metal plate 321, that is, in actual use, the guide rod structure 36 mainly bears the pressure, with the help of the guide rod structure 36 bears the pressure of the movable wedge block 32, and at the same time, replaces the wedge surface as a structure for direct tilting guidance. Since the hardness of the first additional metal plate 311 and the second additional metal plate 321 is relatively high, the main deformation is on the guide rod structure 36, and the guide rod structure 36 is a cylindrical structure, and is pressed in the cylindrical groove. Therefore, when it is pressed, the deformation is relatively uniform. When using the adjustment mechanism with manual auxiliary adjustment, when manually adjusting the movable wedge block 32 and the fixed wedge block 31, the guide rod structure 36 can be rotated to adjust the position of the guide rod structure 36, so that the guide rod structure 36 can be more evenly compressed and deformed during multiple uses, which will not affect the friction resistance between the fixed wedge block 31 and the movable wedge block 32. After long-term use, the guide rod structure 36 is easy to replace, and the replacement cost is relatively low.

[0048] In addition, this embodiment also provides an adjustment scheme for the guide rod structure 36 of the adjustment mechanism suitable for automatic adjustment. Fig.11A rotating wheel 37 is provided at a position on the fixed wedge block 31 corresponding to the end of the guide rod structure 36. A plurality of rubber rings are provided on the rotating wheel 37. The rubber rings are in contact with the circumferential surface of the guide rod structure 36. A convex step is provided at a position on the rotating wheel 37 corresponding to the end of the guide rod structure 36. The convex step is used to limit the end of the guide rod structure 36 to prevent it from slipping out.

[0049] Furthermore, a screw shaft 371 is fixedly connected to the rotating wheel 37, a rotating sleeve 342 is fixedly installed at the bottom of the sliding seat 341, a screw sleeve 372 is rotatably installed inside the rotating sleeve 342, a one-way bearing 373 is arranged between the screw sleeve 372 and the rotating sleeve 342 (refer to the ratchet structure of the rear wheel of a bicycle, so that the screw sleeve 372 can only rotate in one direction in the rotating sleeve 342 and reverse locking), and a spiral texture is arranged on the screw shaft 371, which cooperates with the screw sleeve 372 (refer to the threaded nut, the spiral texture of the screw shaft 371 of this embodiment has a larger pitch and will not self-lock), so that each time the pad structure 3 needs to be adjusted, the horizontal When the shift controller 34 controls the movable wedge block 32 to move out, the screw sleeve 372 moves outward with the sliding seat 341. At this time, the screw sleeve 372 is locked with the rotating sleeve 342, and the screw sleeve 372 cannot rotate, thereby driving the screw shaft 371 to rotate during the movement, which can drive the rotating wheel 37 to rotate, and then drive the guide rod structure 36 to rotate and adjust the position. When the transverse shift controller 34 drives the movable wedge block 32 to move inward, the screw sleeve 372 moves in the opposite direction. At this time, the screw sleeve 372 and the rotating sleeve 342 can rotate, and thus will not drive the screw shaft 371 to rotate, so the guide rod structure 36 will not be driven to rotate during the process of the movable wedge block 32 being gradually tightened.

[0050] It should be noted that the above solution is only one of the methods for adjusting the position of the guide rod structure 36. When specifically designed and used, other direct rotation drive methods can also be used to rotationally adjust the guide rod structure 36.

[0051] In order to improve the adjustment accuracy, this embodiment also provides the following technical solutions. Figure 3 and Fig.12 The adjustment mechanism also includes a distance measuring device 7, which includes a distance measuring device 71 and a distance measuring device receiver 72. The distance measuring device 71 is arranged on the sling fixing frame 12, and the distance measuring device transmitter 71 is arranged in close contact with the sling 11, and the distance measuring device receiver 72 is installed at the bottom of the sling 11. In actual use, a signal can be sent by the distance measuring device transmitter 71 and received by the distance measuring device receiver 72 to determine the specific distance between the sling fixing frame 12 and the bottom basket structure 5 in each group of suspension systems 1, so as to facilitate the bridge construction machine control system to quickly identify and analyze the actual situation, thereby improving the adjustment accuracy of each group of sling fixing frames 12.

[0052] It should be noted that the rangefinder referred to in this embodiment is also called a distance measuring device or sensor, which is usually used to determine the distance between objects, such as an ultrasonic sensor, a laser rangefinder, an infrared rangefinder, a radar rangefinder, etc.

[0053] In the above embodiment, during the actual construction process, the bottom of the box girder near the pier is relatively inclined, and the bottom of the box girder closer to the middle of the bridge is smoother, that is, during the pouring process, the inclination of the bottom mold at different positions is different. Therefore, during the actual pouring process, the concrete preferentially flows to the lower position, which leads to a larger force at the rear cross beam position during the pouring process and the process of waiting for the concrete to solidify. In other words, the pressure of the cable fixing frame 12 at the front and rear cross beams of the main beam structure 4 is relatively different, which leads to uneven force on the front and rear groups of the pad structures 3. Therefore, during actual adjustment, the suspension conditions of each suspension system 1 will be different, the cable 11 may be tilted, and the signal route (such as optical signal) emitted by the rangefinder transmitter 71 will be relatively deviated and cannot be transmitted along the length direction of the cable 11, thereby affecting the ranging effect. For this reason, the present embodiment also provides the following technical solutions. For details, refer to the attached manual. Fig.13 and Fig.14 An instrument housing 73 is fixedly mounted on the sling fixing frame 12, and the rangefinder transmitter 71 is mounted inside the instrument housing 73. An elastic arc frame 74 is arranged in the instrument housing 73, and the elastic arc frame 74 is rotatably mounted inside the instrument housing 73. The two sides of the rangefinder transmitter 71 are rotatably connected to the two ends of the elastic arc frame 74 through a rotating shaft, and the rotation axis of the elastic arc frame 74, the rotation axis between the rangefinder transmitter 71 and the elastic arc frame 74, and the signal transmission direction line of the rangefinder transmitter 71 are perpendicular to each other. At least two groups of guide clamps 75 are fixedly mounted on the rangefinder transmitter 71, and the guide clamps 75 are in a clamping state with respect to the outer wall of the sling 11, and the inner wall of the guide clamps 75 is provided with a positioning convex point 751 in contact with the sling 11. At the same time, the elastic arc frame 74 is an elastic member, and the elastic arc frame 74 provides an elastic force for the rangefinder transmitter 71 to be close to the sling 11.

[0054] It should be noted that, with the support of the elastic arc frame 74, the rangefinder transmitter 71 can produce multi-angle rotation. At the same time, with the help of the fit between the guide clamp 75 and the sling 11, when the sling 11 is relatively tilted, the positioning protrusion 751 is close to the sling 11, thereby ensuring that the signal transmission direction of the rangefinder transmitter 71 is parallel to the sling 11 and the spacing is stable. At the same time, the rangefinder receiver 72 is directly installed on the sling 11, so it does not need to be adjusted, thereby ensuring that the distance measuring device 7 can stably measure distance even during adjustment or use.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An automatic height adjustment mechanism for a bottom basket of a bridge-building machine, characterized in that: It comprises a suspension system (1), a hydraulic jacking system (2) and a cushion block structure (3), wherein the suspension system (1) is used to connect a bottom basket structure (5) and a main beam structure (4); The suspension system (1) comprises a sling (11) and a sling fixing frame (12), the bottom end of the sling (11) is connected to the cross beam of the bottom basket structure (5), the top end of the sling (11) is connected to the sling fixing frame (12) via a sling fixing device (13), and the sling fixing frame (12) is connected to the cross beam of the main beam structure (4) via a hydraulic jacking system (2); The hydraulic jacking system (2) comprises a jacking hydraulic cylinder (21), wherein the jacking hydraulic cylinder (21) is fixedly mounted on a crossbeam of the main beam structure (4), and the sling fixing frame (12) is fixedly mounted on an output end of the jacking hydraulic cylinder (21); The cushion block structure (3) is arranged between the sling fixing frame (12) and the suspension system (1), and the cushion block structure (3) comprises a fixed wedge block (31) and a movable wedge block (32). The fixed wedge block (31) is fixedly installed on the jacking fixing frame (22), and the movable wedge block (32) is arranged between the sling fixing frame (12) and the fixed wedge block (31), and mutually matching wedge surfaces are arranged between the movable wedge block (32) and the fixed wedge block (31). A heater (33) is arranged inside the fixed wedge block (31), and the heater (33) is a heating element evenly distributed in the fixed wedge block (31).

2. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 1 is characterized in that: The pad structure (3) further comprises a transverse movement controller (34), wherein the transverse movement controller (34) is fixedly arranged on the main beam structure (4), and an output end of the transverse movement controller (34) is connected to the movable wedge block (32) via a sliding card seat (341), and a vertical guide rail is arranged at a position of the movable wedge block (32) corresponding to the transverse movement controller (34), and the vertical guide rail is vertically slidably matched with the sliding card seat (341).

3. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 2 is characterized in that: A pressure sensor (3411) is also provided between the output end of the transverse movement controller (34) and the sliding seat (341), and the pressure sensor (3411) is used to monitor the thrust of the output end of the transverse movement controller (34) on the sliding seat (341).

4. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 3 is characterized in that: The transverse movement controller (34) is fixedly connected to the main beam structure (4) via a support frame (35); a protective cover (351) is provided on the support frame (35); and the transverse movement controller (34), the lifting hydraulic cylinder (21) and the cushion block structure (3) are all located inside the protective cover (351).

5. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 4 is characterized in that: A first additional metal plate (311) and a second additional metal plate (321) are respectively arranged at the mating surfaces of the fixed wedge block (31) and the movable wedge block (32); a wedge-shaped surface is arranged between the first additional metal plate (311) and the second additional metal plate (321); a groove structure is arranged between the second additional metal plate (321) and the first additional metal plate (311); the groove structure is a columnar groove structure; and a guide rod structure (36) is arranged between the columnar groove between the first additional metal plate (311) and the second additional metal plate (321).

6. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 5 is characterized in that: The hardness of the first additional metal plate (311) and the second additional metal plate (321) is greater than the hardness of the fixed wedge block (31) and the movable wedge block (32), and the hardness of the guide rod structure (36) is less than the hardness of the first additional metal plate (311) and the second additional metal plate (321).

7. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 6 is characterized in that: A rotating wheel (37) is arranged at a position on the fixed wedge block (31) corresponding to the end of the guide rod structure (36); a plurality of groups of rubber rings are arranged on the rotating wheel (37); the rubber rings are fitted with the circumferential surface of the guide rod structure (36); a convex step is arranged at a position on the rotating wheel (37) corresponding to the end of the guide rod structure (36); the convex step is used to limit the end of the guide rod structure (36).

8. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 7 is characterized in that: A screw shaft (371) is fixedly connected to the rotating wheel (37), a rotating sleeve (342) is fixedly mounted on the bottom of the sliding seat (341), a screw sleeve (372) is rotatably mounted inside the rotating sleeve (342), a one-way bearing (373) is arranged between the screw sleeve (372) and the rotating sleeve (342), and a spiral pattern is arranged on the screw shaft (371), and the spiral pattern cooperates with the screw sleeve (372).

9. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 8 is characterized in that: The adjustment mechanism further comprises a distance measuring device (7), the distance measuring device (7) comprising a distance measuring device transmitter (71) and a distance measuring device receiver (72), the distance measuring device transmitter (71) being arranged on a sling fixing frame (12), and the distance measuring device transmitter (71) being arranged in close contact with the sling (11), and the distance measuring device receiver (72) being fixedly mounted on the bottom of the sling (11).

10. The automatic height adjustment mechanism for the bottom basket of a bridge-building machine according to claim 9, characterized in that: An instrument housing (73) is fixedly mounted on the sling fixing frame (12); the rangefinder transmitter (71) is mounted inside the instrument housing (73); an elastic arc frame (74) is provided in the instrument housing (73); the elastic arc frame (74) is rotatably mounted inside the instrument housing (73); two sides of the rangefinder transmitter (71) are rotatably connected to two ends of the elastic arc frame (74) via a rotating shaft, respectively; and the rotation axis of the elastic arc frame (74) and the rangefinder transmitter (71) are connected to the rangefinder transmitter (71) and the rangefinder transmitter (71) respectively. The rotation axis between the rangefinder transmitter (71) and the elastic arc frame (74) and the signal transmission direction line of the rangefinder transmitter (71) are perpendicular to each other. At least two groups of guide clamps (75) are fixedly mounted on the rangefinder transmitter (71). The guide clamps (75) are in a clamping state with the outer wall of the sling (11), and the inner wall of the guide clamps (75) is provided with a positioning protrusion (751) in contact with the sling (11). At the same time, the elastic arc frame (74) is an elastic member.

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