Bridge girder erection machine and via hole girder erection method of bridge girder erection machine

Abstract

The invention provides a bridge girder erection machine and a via hole girder erection method of the bridge girder erection machine. The bridge girder erection machine comprises a machine arm, a controller, and a static leveling instrument, a first supporting column, a second supporting column and a third supporting column which are electrically connected with the controller, the first supporting column, the second supporting column and the third supporting column are arranged at the front end, the middle and the rear end of the vehicle arm correspondingly and can stretch and retract relative to the vehicle arm. The static force level gauge is arranged on the machine arm, and the positions, corresponding to the first supporting column, the second supporting column and the third supporting column, of the machine arm serve as a datum point, a first measuring point and a second measuring point respectively; the controller obtains a first settlement value between the reference point and the first measuring point and a second settlement value between the reference point and the second measuring point through analysis and calculation; the controller controls the first supporting column, the second supporting column and the third supporting column to stretch out and draw back so that the first settlement value can be within a first set range, and the second settlement value can be within a second set range. The controller monitors and adjusts the levelness of the machine arm in real time through the static force level gauge, and it is ensured that the machine arm is kept horizontal.

Description

Technical Field

[0001] The present disclosure relates to the technical field of construction machinery and equipment, and in particular to a bridge erection machine and a through-hole beam erection method of the bridge erection machine. Background Art

[0002] The bridge erection machine is a common equipment for transporting beams and placing them on the preset bridge piers. The bridge erection machine includes a machine arm and multiple pillars. The multiple pillars support the machine arm on the bridge deck. The bridge erection machine moves on the bridge deck through the multiple pillars, and finally the bridge erection machine is erected between the bridge deck at the bridge head and the adjacent bridge piers downstream of the bridge head to complete the through-hole erection operation of the bridge erection machine, so that the bridge erection machine can transport the beam piece to between the bridge pier at the edge of the bridge head and the adjacent bridge piers downstream of the bridge head to complete the beam erection operation.

[0003] When a bridge-building machine is passing through holes and erecting beams, the horizontality of the boom needs to be strictly controlled. The horizontality of the boom is usually determined by calculating the length of multiple pillars under the boom. However, during the process of passing through holes and erecting beams, multiple pillars move on the bridge deck, making it difficult to control the horizontality of the boom. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a bridge erecting machine and a through-hole beam erecting method of the bridge erecting machine.

[0005] The present disclosure provides a bridge erecting machine, comprising a machine arm, a controller, and a static level, a first support, a second support, and a third support electrically connected to the controller;

[0006] The first support, the second support and the third support are respectively arranged at the front end, the middle part and the rear end of the machine arm, and are all configured to be able to extend and retract relative to the machine arm;

[0007] The static level is arranged on the aircraft arm, with the position where the aircraft arm corresponds to the first support as the reference point, the position where the aircraft arm corresponds to the second support as the first measuring point, and the position where the aircraft arm corresponds to the third support as the second measuring point;

[0008] The controller receives the detection result of the static level to analyze and calculate a first settlement value between the reference point and the first measuring point and a second settlement value between the reference point and the second measuring point;

[0009] The controller controls the extension and retraction of the first support, the second support, and the third support so that the first settlement value is within a first setting range and the second settlement value is within a second setting range.

[0010] Optionally, the static level includes a liquid storage tank, a first level, a second level and a third level;

[0011] The first level, the second level and the third level are arranged in one-to-one correspondence with the reference point, the first measuring point and the second measuring point;

[0012] The liquid storage tank, the first level, the second level and the third level are sequentially connected in series through a liquid pipe, and the liquid storage tank, the first level, the second level and the third level are sequentially connected in series through a gas pipe, and the gas pipe is connected to the atmosphere;

[0013] The liquid storage tank is arranged on the upper side of the first level, the second level and the third level, and the first level, the second level and the third level respectively detect the liquid pressure value inside thereof;

[0014] The first level, the second level and the third level are all electrically connected to the controller, and the controller analyzes and calculates the detection results of the first level, the second level and the third level to obtain the first settlement value and the second settlement value.

[0015] Optionally, the first level is arranged on the upper side of the second level and the third level;

[0016] In the vertical direction, the distance between the second level and the first level is equal to the distance between the third level and the first level;

[0017] The distance between the liquid level in the liquid storage tank and the second level gauge or the third level gauge is the measuring range, and the distance between the first level gauge and the liquid level in the liquid storage tank and the second level gauge is equal to half of the measuring range.

[0018] Optionally, the first pillar is provided with a first angle sensor for detecting the angle between the first pillar and the vertical direction, the second pillar is provided with a second angle sensor for detecting the angle between the second pillar and the vertical direction, and the third pillar is provided with a third angle sensor for detecting the angle between the third pillar and the vertical direction.

[0019] Optionally, the first support column includes a first cross beam, a first support beam assembly and a first telescopic cylinder;

[0020] The first crossbeam and the first support beam assembly are arranged opposite to each other and are slidably connected to each other, and the first crossbeam is installed on the machine arm;

[0021] The first telescopic cylinder is installed between the first crossbeam and the first support beam assembly to drive the first support beam assembly to move closer to or farther from the first crossbeam;

[0022] The first telescopic oil cylinder is electrically connected to the controller.

[0023] Optionally, an anchor rod is provided on the first support beam assembly, and the anchor rod is used for anchoring connection with the lifting hole of the beam piece.

[0024] Optionally, the second support column includes a second cross beam, a second support beam assembly and a second telescopic cylinder;

[0025] The second cross beam and the second support beam assembly are respectively arranged on the upper side and the lower side of the machine arm, and two ends of the second cross beam are respectively slidably connected to two ends of the second support beam assembly;

[0026] The second telescopic oil cylinder is connected between the second cross beam and the second support beam assembly to drive the second support beam assembly and the second cross beam to move closer to and away from each other;

[0027] The second telescopic oil cylinder is electrically connected to the controller.

[0028] Optionally, the third support column includes a third cross beam, a third support beam assembly and a third telescopic cylinder;

[0029] The third crossbeam and the third support beam assembly are arranged opposite to each other and are slidably connected to each other. The third crossbeam is installed on the machine arm. The third telescopic oil cylinder is connected between the third crossbeam and the third support beam assembly to drive the third support beam assembly to approach or move away from the third crossbeam.

[0030] The third telescopic oil cylinder is electrically connected to the controller.

[0031] Optionally, a first running mechanism for supporting the second support column on a side away from the arm is provided, and the first running mechanism can drive the second support column to drive the arm to move relative to the bridge deck;

[0032] And / or, a second running mechanism for supporting the machine arm on the bridge deck is provided on a side of the third pillar away from the machine arm, and the second running mechanism can drive the third pillar to drive the machine arm to move relative to the bridge deck.

[0033] The present disclosure also provides a through-hole beam erection method of a bridge erection machine, comprising a through-hole step, wherein the through-hole step comprises:

[0034] The bridge erection machine is placed on the bridge deck of the bridge head, the second pillar and the third pillar are supported on the bridge deck, and the first pillar is supported at the first bridge pier at the edge of the bridge head;

[0035] The controller controls the first support to be in a retracted state, and synchronously drives the arm and the first support to move to a second adjacent bridge pier downstream through the second support and the third support;

[0036] Lifting the first support column to support it on the second pier;

[0037] The controller receives the detection result of the static level to analyze and calculate a first settlement value between the reference point and the first measuring point and a second settlement value between the reference point and the second measuring point;

[0038] The controller controls the first pillar, the second pillar and the third pillar to extend and retract according to the first settlement value and the second settlement value until the first settlement value is within a first set range and the second settlement value is within a second set range.

[0039] Optionally, after the via hole step, a beam erection step is further included, and the beam erection step includes:

[0040] Drive the transport vehicle to transport the beam piece between the second support column and the third support column;

[0041] Controlling the beam crane to lift the beam piece and move it between two adjacent bridge piers;

[0042] The controller calculates the first settlement value and the second settlement value, and controls the extension and retraction of the first pillar, the second pillar, and the third pillar according to the first settlement value and the second settlement value, so that the first settlement value is within a first set range and the second settlement value is within a second set range;

[0043] The beam piece is lowered onto the two bridge piers to complete the beam erection operation.

[0044] Optionally, before controlling the first pillar to be in a retracted state and synchronously driving the arm and the first pillar to move to a second adjacent bridge pier downstream through the second pillar and the third pillar, a verticality adjustment operation is also included, and the verticality adjustment operation includes:

[0045] Detecting the angle between the first pillar and the vertical direction, the angle between the second pillar and the vertical direction, and the angle between the third pillar and the vertical direction;

[0046] When the angle between the first pillar and the vertical direction is greater than a first preset value, the first pillar is adjusted; when the angle between the first pillar and the vertical direction is less than or equal to the first preset value, the first pillar passes the detection;

[0047] When the angle between the second pillar and the vertical direction is greater than a second preset value, the second pillar is adjusted; when the angle between the second pillar and the vertical direction is less than or equal to the second preset value, the second pillar passes the detection;

[0048] When the angle between the third pillar and the vertical direction is greater than a third preset value, the third pillar is adjusted; when the angle between the second pillar and the vertical direction is less than or equal to the third preset value, the third pillar passes the detection;

[0049] Repeat the above steps until the first pillar, the second pillar and the third pillar all pass the inspection, and the verticality adjustment operation is completed.

[0050] Optionally, before driving the transport vehicle to transport the beam piece between the second support column and the third support column, a positioning step is further included, and the positioning step includes:

[0051] The transport vehicle carrying the beam piece moves at a first speed until there is a first safety distance between the transport vehicle and the rear end of the arm, and stops moving for the first time, and performs a safety check on the control system of the bridge erecting machine and the transport vehicle;

[0052] The transport vehicle moves at a second speed until a second safety distance exists between the front end of the transport vehicle and the third pillar and stops moving for a second time;

[0053] A triangular wood is placed at a preset position below the machine arm, and the transport vehicle moves at the second speed until the wheels of the transport vehicle abut against the triangular wood, and then stops moving, thereby completing the alignment operation.

[0054] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0055] The present invention provides a bridge erection machine and a through-hole beam erection method of the bridge erection machine. The bridge erection machine includes a machine arm, a controller, and a static level, a first pillar, a second pillar and a third pillar electrically connected to the controller; the first pillar, the second pillar and the third pillar are respectively arranged at the front end, the middle part and the rear end of the machine arm, and are all configured to be able to extend and retract relative to the machine arm; the static level is arranged on the machine arm, with the corresponding position of the machine arm and the first pillar as a reference point, the corresponding position of the machine arm and the second pillar as a first measuring point, and the corresponding position of the machine arm and the third pillar as a second measuring point, so that the static level can monitor the horizontality of the entire machine arm; the controller receives the detection result of the static level to analyze and calculate the first settlement value between the reference point and the first measuring point, and the second settlement value between the reference point and the second measuring point; the controller controls the extension and retraction of the first pillar, the second pillar and the third pillar, so that the first settlement value is within a first setting range, and the second settlement value is within a second setting range. The controller determines whether the arm is in a tilted state through the first settlement value and the second settlement value, thereby controlling the extension and retraction of the first pillar, the second pillar and the third pillar accordingly; the controller can conveniently determine the tilt degree of the arm through the detection results of the static level, thereby controlling the extension and retraction of the first pillar, the second pillar and the third pillar in real time, so that the arm can remain horizontal during the through-hole operation and beam-erecting operation of the bridge-building machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0057] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0058] Figure 1 A side view of the bridge erecting machine according to the embodiment of the present disclosure when placed on a bridge deck;

[0059] Figure 2 It is a structural schematic diagram of the static level according to the embodiment of the present disclosure;

[0060] Figure 3 This is a schematic diagram of the structure of the first pillar in the embodiment of the present disclosure;

[0061] Figure 4 This is a schematic diagram of the structure of the second pillar in the embodiment of the present disclosure;

[0062] Figure 5 This is one of the structural schematic diagrams of the third pillar described in the embodiment of the present disclosure;

[0063] Figure 6 This is the second structural diagram of the third pillar described in the embodiment of the present disclosure;

[0064] Figure 7 It is a schematic flow chart of the through-hole beam erection method of the bridge erection machine described in the embodiment of the present disclosure.

[0065] Among them, 1. arm; 2. first pillar; 21. first crossbeam; 22. first support beam assembly; 23. first telescopic cylinder; 3. second pillar; 31. second crossbeam; 32. second support beam assembly; 33. second telescopic cylinder; 34. first running mechanism; 4. third pillar; 41. third crossbeam; 42. third support beam assembly; 43. third telescopic cylinder; 44. second running mechanism; 441. synchronization rod; 45. first mounting part; 46. second mounting part; 5. static level; 51. first level; 52. second level; 53. third level; 54. liquid storage tank; 55. liquid pipe; 56. gas pipe; 57. data collector. DETAILED DESCRIPTION

[0066] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0067] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0068] Reference Figures 1 to 7 As shown, an embodiment of the present disclosure provides a bridge-building machine, including an arm 1, a controller, and a static level 5, a first pillar 2, a second pillar 3 and a third pillar 4 electrically connected to the controller; the first pillar 2, the second pillar 3 and the third pillar 4 are respectively arranged at the front end, the middle part and the rear end of the arm 1, and are all configured to be able to extend and retract relative to the arm 1; the static level 5 is arranged on the arm 1, with the corresponding position of the arm 1 and the first pillar 2 as the reference point, the corresponding position of the arm 1 and the second pillar 3 as the first measuring point, and the corresponding position of the arm and the third pillar 4 as the second measuring point; the controller receives the detection result of the static level 5 to analyze and calculate the first settlement value between the reference point and the first measuring point, and the second settlement value between the reference point and the second measuring point; the controller controls the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4, so that the first settlement value is within a first setting range, and the second settlement value is within a second setting range.

[0069] Specifically, when the bridge is erected, it has a plurality of piers arranged at intervals, beams are erected on two adjacent piers to form a bridge structure, and a plurality of beams are sequentially erected on two adjacent piers and connected to each other to finally complete the overall erection of the bridge, and the bridge head is on one side of the arrangement direction of the plurality of beams when the bridge heads are erected as the downstream of the bridge head.

[0070] The pier at the edge of the bridge head is the first pier, and the pier adjacent to the downstream of the bridge head among the multiple piers arranged at intervals is the second pier. After the erection machine is erected between the first pier and the second pier, the beam piece is transported between the two piers by the machine arm 1 to complete the installation operation of the beam piece.

[0071] The above-mentioned arm 1 is usually kept parallel to the bridge deck of the bridge head when in use, the extension direction of the arm 1 is the longitudinal direction of the arm 1, the direction perpendicular to the extension of the arm 1 in the horizontal direction is the transverse direction of the arm 1, and the first pillar 2, the second pillar 3 and the third pillar 4 can support the arm 1 on the bridge deck. The two opposite ends of the arm 1 are respectively the front end and the rear end, the first pillar 2 can be selectively arranged on the front end of the arm 1, the third pillar 4 is arranged on the rear end of the arm 1, and the second pillar 3 is arranged in the middle position between the front end and the rear end of the arm 1.

[0072] The above-mentioned first pillar 2, second pillar 3 and third pillar 4 can be selected to include mutually nested tubes or cylinders, and the mutually nested tubes or cylinders are connected to a driving cylinder, so that the driving cylinder drives the mutually nested tubes or cylinders to move closer to or away from each other, so as to realize the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4.

[0073] The above-mentioned static level 5 can be selected as a pressure difference static level. The static level 5 includes multiple measuring parts, and the multiple measuring parts are arranged on the arm 1 corresponding to the first pillar 2, the second pillar 3 and the third pillar 4. The static level is composed of a liquid reservoir and multiple sensors of the same model. The static level as a whole utilizes the principle of liquid communicating vessels. Multiple sensors are arranged along the surface of the monitored object according to design requirements. One of them is installed at a point with a stable structure, that is, a point that is considered to be unlikely to settle. When the remaining sensors settle relative to the sensors installed at the points of the stable structure, the height change is calculated by inverse calculation of the liquid pressure change at the monitoring point.

[0074] The connection between the arm 1 and the first pillar 2 is used as the reference point of the static level 5, the connection between the arm 1 and the second pillar 3 is used as the first measuring point, and the connection between the arm 1 and the third pillar 4 is used as the second measuring point. The first settlement value between the reference point and the first measuring point and the second settlement value between the reference point and the second measuring point can be obtained by converting the liquid pressure difference between the first measuring point and the second measuring point of the static level 5 in combination with the local gravity acceleration and liquid seal. That is, when the arm 1 is in a horizontal state, the first settlement value is 0 and the second settlement value is 0; when the arm 1 is tilted, the first settlement value and the second settlement value increase or decrease accordingly, that is, the first settlement value and the second settlement value can reflect whether the arm 1 is in a horizontal state.

[0075] The above-mentioned first setting range can be selected as -100~200mm, that is, the arm 1 at the first pillar 2 can be 0~100mm lower than the arm 1 at the second pillar 3, and the position of the arm 1 at the first pillar 2 can be 0~200mm higher than the arm 1 at the second pillar 3; the second setting range can be selected as 0~100mm, that is, the arm at the first pillar 2 can be 0~100mm higher than the arm 1 at the third pillar 4.

[0076] The controller can be a chip or a circuit board. When the first pillar 2, the second pillar 3 and the third pillar 4 are respectively driven by hydraulic cylinders to extend and retract, the controller can be electrically connected to the oil supply valves of the hydraulic cylinders of the first pillar 2, the second pillar 3 and the third pillar 4, so that the controller controls the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4. Of course, it is also possible to electrically connect the motors of the first pillar 2, the second pillar 3 and the third pillar 4, so that the controller controls the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4, when the first pillar 2, the second pillar 3 and the third pillar 4 are respectively driven by motors to extend and retract.

[0077] When the bridge-erecting machine provided by the embodiment of the present disclosure is used in practice, when the bridge-erecting machine is erecting a through-hole frame, the arm 1 needs to be extended and retracted at the edge of the bridge head, and finally the first pillar 2 at the front end of the arm 1 is supported on the adjacent pier downstream of the bridge head. In the process of the arm 1 extending out of the bridge head, the arm 1 may be tilted due to the different positions of the bridge-erecting machine on the bridge deck. The horizontality of the arm 1 is adjusted by extending and retracting the second pillar 3 and the third pillar 4. When the first pillar 2 is supported on the pier and the second pillar 3 and the third pillar 4 are supported on the bridge deck, the horizontality of the arm 1 is adjusted by extending and retracting the first pillar 2, the second pillar 3 and the third pillar 4, to ensure that the arm 1 is in a horizontal state during the subsequent beam erection process.

[0078] When the bridge-building machine is erecting beams, the beam needs to be hoisted on the arm 1, and the beam will move along the arm 1. Since the beam has a certain weight, the arm 1 may tilt due to the change in the center of gravity when the beam moves on the arm 1. The controller controls the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4 based on the first settlement value and the second settlement value obtained from the detection result of the static level 5, thereby ensuring that the arm 1 is in a horizontal state.

[0079] The bridge-building machine provided by the present invention comprises an arm 1, a controller, and a static level 5, a first pillar 2, a second pillar 3 and a third pillar 4 electrically connected to the controller; the first pillar 2, the second pillar 3 and the third pillar 4 are respectively arranged at the front end, the middle part and the rear end of the arm 1, and are all configured to be able to extend and retract relative to the arm 1; the static level 5 is arranged on the arm 1, with the corresponding position of the arm 1 and the first pillar 2 as the reference point, the corresponding position of the arm 1 and the second pillar 3 as the first measuring point, and the corresponding position of the arm and the third pillar 4 as the second measuring point, so that the static level 5 can monitor the overall horizontality of the arm 1; the controller receives the detection result of the static level 5, so as to analyze and calculate the first settlement value between the reference point and the first measuring point, and the second settlement value between the reference point and the second measuring point; the controller controls the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4, so that the first settlement value is within a first setting range, and the second settlement value is within a second setting range. The controller determines whether the arm is in a tilted state through the first settlement value and the second settlement value, thereby correspondingly controlling the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4; the controller can conveniently determine the degree of inclination of the arm 1 through the detection results of the static level 5, thereby controlling the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4 in real time, so that the arm 1 can maintain a horizontal state during the through-hole operation and beam-erecting operation of the bridge-building machine.

[0080] Reference Figure 2As shown, in some embodiments, the static level 5 includes a liquid storage tank 54, a first level 51, a second level 52 and a third level 53; the first level 51, the second level 52 and the third level 53 are arranged in one-to-one correspondence with the reference point, the first measuring point and the second measuring point; the liquid storage tank 54, the first level 51, the second level 52 and the third level 53 are connected in series in sequence through a liquid pipe 55, and the liquid storage tank 54, the first level 51, the second level 52 and the third level 53 are connected in series in sequence through a gas pipe 56 They are connected in series in sequence, and the gas pipe 56 is connected to the atmosphere; the liquid storage tank 54 is arranged on the upper side of the first level 51, the second level 52 and the third level 53, and the first level 51, the second level 52 and the third level 53 respectively detect the liquid pressure values ​​inside them; the first level 51, the second level 52 and the third level 53 are all electrically connected to the controller, and the controller analyzes and calculates the detection results of the first level 51, the second level 52 and the third level 53 to obtain the first settlement value and the second settlement value.

[0081] With such arrangement, the liquid in the liquid storage tank 54 can flow into the first level 51, the second level 52 and the third level 53, and the first level 51, the second level 52 and the third level 53 form a closed liquid environment, and the first settlement value and the second settlement value can be calculated by detecting the liquid pressure of the first level 51, the second level 52 and the third level 53; the first level 51, the second level 52 and the third level 53 correspond one-to-one to the reference point, the first measuring point and the second measuring point, so that when the first pillar 2, the second pillar 3 and the third pillar 4 are extended or retracted, the moving distance of the first measuring point and the second measuring point relative to the reference point can be accurately reflected, thereby improving the accuracy of the leveling of the arm 1.

[0082] Specifically, the liquid storage tank 54, the first level 51, the second level 52 and the third level 53 are arranged in sequence along the longitudinal direction of the arm 1, and the liquid pipe 55 is connected in series with the liquid storage tank 54, the first level 51, the second level 52 and the third level 53 in sequence; the liquid storage tank 54 is arranged on the upper side of the first level 51, the second level 52 and the third level 53, so that the liquid in the liquid storage tank 54 can flow into the first level 51, the second level 52 and the third level 53 under its own gravity; the first level 51, the second level 52 and the third level 53 are connected in series in sequence through the gas pipe 56, and the gas pipe 56 is connected to the atmosphere, that is, the first level 51, the second level 52 and the third level 53 are all connected to the atmosphere.

[0083] The first level 51, the second level 52 and the third level 53 are connected in series to form a closed environment containing liquid, and the pressure difference in the closed liquid is used to detect the height change. When the settlement of the reference point is zero, the second level and the third level follow the settlement change of the first measured point and the second measured point, the height change of the reference point and the first measured point is the first settlement value, and the height change of the reference point and the second measured point is the second settlement value. The settlement value is expressed by the pressure difference between the reference point and the measured point.

[0084] When the above-mentioned arm 1 is in a horizontal state, the reference point, the first measuring point and the second measuring point are on the same horizontal plane, and the liquid storage tank 54 is close to the first level 51. It can be considered that the height difference between the liquid storage tank 54 and the first level 51 remains unchanged, so the first level 51 is set on the reference point.

[0085] The liquid in the liquid storage tank 54 flows into the first level 51, the second level 52 and the third level under the action of gravity. The distance between the second level 52 and the liquid storage tank 54 will change when the arm 1 is tilted, thereby changing the liquid pressure value in the second level 52; the distance between the third level 53 and the liquid storage tank 54 will change when the arm 1 is tilted, thereby changing the liquid pressure value in the third level 53.

[0086] The above-mentioned static level 5 can also include a data collector 57, which is electrically connected to the first level 51, the second level 52 and the third level 53 respectively, and the controller is electrically connected to the data collector 57. The liquid pressure values ​​measured by the first level 51, the second level 52 and the third level 53 are respectively output to the data collector 57, and then the data collector 57 transmits the received measurement results to the controller for analysis and calculation.

[0087] The first height difference between the first level 51 and the liquid surface in the liquid storage tank 54 is calculated by combining the liquid pressure in the first level 51 with the liquid density and the local atmospheric pressure, and then the second height difference between the second level 52 and the liquid surface in the liquid storage tank 54 and the third height difference between the third level 53 and the liquid surface in the liquid storage tank 54 are calculated in sequence; by comparing the first height difference with the second height difference and the first height difference with the third height difference, the first settlement value of the first measuring point relative to the reference point and the second settlement value of the second measuring point relative to the reference point can be obtained.

[0088] Reference Figure 2As shown, in some embodiments, the first level 51 is arranged on the upper side of the second level 52 and the third level 53; in the vertical direction, the distance between the second level 52 and the first level 51 is equal to the distance between the third level 53 and the first level 51; the distance between the liquid level in the liquid storage tank 54 and the second level 52 or the third level 53 is the measuring range, and the distance between the first level 51 and the liquid level in the liquid storage tank 54 and the second level 52 is equal to half of the measuring range. In this way, the liquid in the first level 51 can flow into the second level 52 and the third level 53 under the action of its own gravity, ensuring that the liquid fully flows into the first level 51, the second level 52 and the third level 53, thereby improving the detection accuracy of the static level 5; the first level 51 is at half of the measuring range, so that the static level 5 has a larger detection range to adapt to various tilt angles of the machine arm 1 during the construction process.

[0089] Specifically, when the machine arm 1 is in a horizontal state, the second level 52 and the third level 53 are in the same horizontal plane, and the first level 51 is on the upper side of the second level 52 and the third level 53, so that the liquid in the first level 51 can flow into the second level 52 and the third level 53 under the action of its own gravity, so that the liquid can fully flow into the first level 51, the second level 52 and the third level 53, so that the detection data of the static level 5 is accurate. Figure 2 As shown, the distance between the liquid level in the liquid storage tank 54 and the second level gauge 52 or the third level gauge 53 is the measuring range L1, and the first level gauge 51 is at half of the measuring range L1.

[0090] When the first level 51 is at half of its range and the arm 1 is tilted at a large angle, the liquid in the liquid storage tank 54 can still fully flow into the first level 51, the second level 52 and the third level 53, ensuring that the static level 5 can adapt to the detection operation when the arm 1 is tilted at a large angle.

[0091] In some embodiments, a first angle sensor for detecting the angle between the first pillar 2 and the vertical direction is provided on the first pillar 2, a second angle sensor for detecting the angle between the second pillar 3 and the vertical direction is provided on the second pillar 3, and a third angle sensor for detecting the angle between the third pillar 4 and the vertical direction is provided on the third pillar 4. In this way, the first angle sensor, the second angle sensor and the third angle sensor monitor the verticality of the first pillar 2, the second pillar 3 and the third pillar 4, ensuring that the first pillar 2, the second pillar 3 and the third pillar 4 are in a vertical state and the arm 1 is supported on the bridge deck, so as to avoid shaking and tipping due to the inclination of the first pillar 2, the second pillar 3 and the third pillar 4 during the process of the bridge erection machine passing through the hole and erecting the beam.

[0092] Specifically, the first angle sensor, the second angle sensor and the third angle sensor can all be selected as inclination sensors, measuring the angle between the first pillar 2 and the vertical direction to ensure the verticality of the first pillar 2, measuring the angle between the second pillar 3 and the vertical direction to ensure the verticality of the second pillar 3, and measuring the angle between the third pillar 4 and the vertical direction to ensure the verticality of the third pillar 4.

[0093] It can be selected that when the angle between the first pillar 2 and the vertical direction is greater than the first preset value, the first pillar 2 is in a tilted state, and the staff is required to reinstall the first pillar 2 on the arm 1 to adjust the verticality of the first pillar 2 so that the first pillar 2 is set vertically; when the angle between the second pillar 3 and the vertical direction is greater than the second preset value, the second pillar 3 is in a tilted state, and the staff is required to reinstall the second pillar 3 on the arm 1 to adjust the verticality of the second pillar 3 so that the second pillar 3 is set vertically; when the angle between the third pillar 4 and the vertical direction is greater than the third preset value, the third pillar 4 is in a tilted state, and the staff is required to reinstall the third pillar 4 on the arm 1 to adjust the verticality of the third pillar 4 so that the second pillar 3 is set vertically.

[0094] The first preset value can be selected as 0.4° to 0.6°, or as 0.51°; the second preset value can be selected as 0.4° to 0.6°, or as 0.57°; the third preset value can be selected as 0.6° to 0.8°, or as 0.7°.

[0095] Reference Figure 1 and Figure 3 As shown, in some embodiments, the first pillar 2 includes a first crossbeam 21, a first support beam assembly 22 and a first telescopic cylinder 23; the first crossbeam 21 and the first support beam assembly 22 are arranged opposite to each other and are slidably connected to each other, and the first crossbeam 21 is installed on the arm 1; the first telescopic cylinder 23 is installed between the first crossbeam 21 and the first support beam assembly 22 to drive the first support beam assembly 22 to move closer to or away from the first crossbeam 21; the first telescopic cylinder 23 is electrically connected to the controller.

[0096] Specifically, the first support beam assembly 22 may be selected as a frame or block structure, the first support beam assembly 22 has a column structure extending toward the first cross beam 21, and the first cross beam 21 may be provided with a through hole, so that the column structure and the through hole are movably plugged, so that the first cross beam 21 is movably connected to the first support beam assembly 22. Of course, the first support beam assembly 22 may also be selected to be recessed toward one side of the first cross beam 21 to form a movable groove, and the first cross beam 21 is provided with a column on one side of the first support beam assembly 22, and the column is movably plugged into the movable groove, so that the first cross beam 21 is movably connected to the first support beam assembly 22.

[0097] The first telescopic oil cylinder 23 can be a telescopic oil cylinder, which is arranged along the direction of the first cross beam 21 toward the first support beam assembly 22, so that the end of the telescopic oil cylinder moves in the direction of the first cross beam 21 toward the first support beam assembly 22; the first cross beam 21 is connected to the machine arm 1, so that after the telescopic oil cylinder is started, it can drive the first support beam assembly 22 to move in a direction away from or close to the first cross beam 21, so as to achieve the extension and retraction of the first support 2. The controller is electrically connected to the power source of the telescopic oil cylinder, so that the controller controls the telescopic operation of the telescopic oil cylinder.

[0098] In some embodiments, an anchor rod is provided on the first support beam assembly 22, and the anchor rod is used to be anchored and connected with the lifting hole of the beam piece. In this way, when the first pillar 2 is supported on the pier at the edge of the bridge head, the anchor rod is connected with the beam piece at the bridge head, so that the relative position of the first pillar 2 and the beam piece remains stable, and the stability of the bridge erection machine when it is supported on the bridge deck of the bridge head is improved.

[0099] Specifically, the anchor rod can be selected as a rod body structure arranged on the side of the first support beam assembly 22 in the longitudinal direction of the arm 1 facing the second pillar 3. When the beam piece is hoisted, it is necessary to use a steel cable to hoist the beam piece to the hoisting beam crane on the arm 1, so hoisting holes for passing the steel cables will be provided at both ends of the beam piece; bolts can be optionally installed at the end of the anchor rod away from the first support beam assembly 22, and the bolts are arranged in the vertical direction. After the bolts are inserted into the hoisting holes, the anchor rod can be anchored and connected to the hoisting holes of the beam piece, thereby keeping the relative position of the first pillar 2 and the beam piece stable.

[0100] When the above-mentioned first pillar 2 is supported on the pier at the edge of the bridge head, the anchor rod can be connected to the lifting hole of the beam piece of the bridge head, so that the relative position of the first pillar 2 and the beam piece remains stable, thereby improving the stability of the bridge erection machine when it is supported on the bridge deck of the bridge head.

[0101] Reference Figure 1 and Figure 4 As shown, in some embodiments, the second pillar 3 includes a second cross beam 31, a second support beam assembly 32 and a second telescopic cylinder 33; the second cross beam 31 and the second support beam assembly 32 are respectively arranged on the upper side and the lower side of the arm 1, and the two ends of the second cross beam 31 are slidingly connected to the two ends of the second support beam assembly 32 respectively; the second telescopic cylinder 33 is connected between the second cross beam 31 and the second support beam assembly 32 to drive the second support beam assembly 32 and the second cross beam 31 to move closer to and away from each other; the second telescopic cylinder 33 is electrically connected to the controller.

[0102] With such arrangement, the second telescopic cylinder 33 drives the second support beam assembly 32 to move toward and away from the second cross beam 31, thereby realizing the extension and retraction of the second support column 3; the first support column 2 and the second support column 3 cooperate with each other to extend and retract, thereby adjusting the horizontality of the boom 1 to keep the boom 1 horizontal.

[0103] Specifically, the second support beam assembly 32 may be selected as a frame or block structure, the second support beam assembly 32 has a column structure extending toward the second cross beam 31, and the second cross beam 31 may be provided with a through hole, so that the column structure and the through hole are movably plugged, so that the second cross beam 31 is movably connected to the second support beam assembly 32. Of course, the second support beam assembly 32 may also be selected to be recessed toward one side of the second cross beam 31 to form a movable groove, and the second cross beam 31 is provided with a column on one side of the second support beam assembly 32, and the column is movably plugged into the movable groove, so that the second cross beam 31 is movably connected to the second support beam assembly 32.

[0104] The second telescopic oil cylinder 33 can be selected as a telescopic oil cylinder, which is arranged along the direction of the second cross beam 31 toward the second support beam assembly 32, so that the end of the telescopic oil cylinder moves in the direction of the second cross beam 31 toward the second support beam assembly 32; the second cross beam 31 is connected to the machine arm 1, so that after the telescopic oil cylinder is started, it can drive the second support beam assembly 32 to move in the direction away from or close to the second cross beam 31, so as to achieve the extension and retraction of the second support 3. The controller is connected to the power source of the telescopic oil cylinder, so that the controller can control the extension and retraction of the telescopic oil cylinder.

[0105] The above-mentioned second cross beam 31 is arranged along the transverse direction of the arm 1, and the second support beam assembly 32 is arranged along the transverse direction of the arm 1. The two ends of the second cross beam 31 along the transverse direction of the arm 1 are connected to the two ends of the second support beam assembly 32 along the transverse direction of the arm 1, and the middle parts of the second cross beam 31 and the second support beam assembly 32 are spaced apart, so that a working channel can be formed between the second cross beam 31 and the second support beam assembly 32.

[0106] In the subsequent beam erection operation, the lower side of the arm 1 can be selected to be slidably connected to the beam crane, the beam crane slides along the arm 1, the beam is connected to the beam crane, and the second cross beam 31 is on the upper side of the arm 1, so that the beam crane slides along the arm 1 to drive the beam to move longitudinally along the arm 1, and the beam can move on the arm 1 through the working channel.

[0107] Reference Figure 1 and Figure 5As shown, in some embodiments, the third support column 4 includes a third crossbeam 41, a third support beam assembly 42 and a third telescopic oil cylinder 43; the third crossbeam 41 and the third support beam assembly 42 are arranged opposite to each other and are slidably connected to each other, the third crossbeam 41 is installed on the machine arm 1, and the third telescopic oil cylinder 43 is connected between the third crossbeam 41 and the third support beam assembly 42 to drive the third support beam assembly 42 to approach or move away from the third crossbeam 41; the third telescopic oil cylinder 43 is electrically connected to the controller. In this way, the third telescopic oil cylinder 43 can drive the third support beam assembly 42 and the third crossbeam 41 to approach or move away from each other, thereby realizing the telescopic movement of the third support column 4, and the controller is electrically connected to the third telescopic oil cylinder 43, so that the controller controls the telescopic movement of the third telescopic oil cylinder 43 to control the telescopic movement of the third support column 4.

[0108] Specifically, the third support beam assembly 42 may be selected as a frame or block structure, the third support beam assembly 42 has a column structure extending toward the third cross beam 41, and the third cross beam 41 may be provided with a through hole, so that the column structure and the through hole are movably plugged, so that the third cross beam 41 is movably connected to the third support beam assembly 42. Of course, the third support beam assembly 42 may also be selected to be recessed on one side of the third cross beam 41 to form a movable groove, and the third cross beam 41 is provided with a column on one side of the third support beam assembly 42, and the column is movably plugged into the movable groove, so that the third cross beam 41 is movably connected to the third support beam assembly 42.

[0109] The third telescopic oil cylinder 43 can be selected as a telescopic oil cylinder, which is arranged along the direction of the third cross beam 41 toward the third support beam assembly 42, so that the end of the telescopic oil cylinder moves in the direction of the third cross beam 41 toward the third support beam assembly 42; the third cross beam 41 is connected to the machine arm 1, so that after the telescopic oil cylinder is started, the third support beam assembly 42 can be driven to move in the direction away from or close to the third cross beam 41, so as to achieve the extension and retraction of the third support 4. The controller is connected to the power source of the telescopic oil cylinder, so that the controller can control the extension and retraction of the telescopic oil cylinder.

[0110] Reference Figures 1 to 5 As shown, in some embodiments, a first running mechanism 34 for supporting on the bridge deck is provided on the side of the second pillar 3 away from the arm 1, and the first running mechanism 34 can drive the second pillar 3 to drive the arm 1 to move relative to the bridge deck. In this way, the second pillar 3 can move on the bridge deck through the first running mechanism 34, which is convenient for the bridge erection machine to drive the arm 1 to move relative to the bridge deck when passing through the hole.

[0111] Specifically, the first running mechanism 34 can be selectively arranged on the second support beam assembly 32, so that the first running mechanism 34 is supported on the bridge deck, and the first running mechanism 34 moves on the bridge deck to drive the second pillar 3 to move relative to the bridge deck.

[0112] The first running mechanism 34 can be selected to include a first running wheel set, a suspension system and a leg; the first running wheel set is movably connected to the second pillar 3 through the suspension system, so that the first running wheel set can switch between a supporting position supported on the ground and a retracted position retracted to the second pillar 3; when the first running wheel set is in the retracted position, the end of the leg away from the second pillar 3 abuts against the ground, and the leg is supported on the bridge deck. When the second pillar 3 needs to move on the bridge deck, the first running wheel set is in the supporting position, and the leg is spaced apart from the bridge deck, so that the second running wheel set can roll and move on the bridge deck; when the second pillar 3 needs to maintain a stable relative position with the bridge deck, the first running wheel set is in the retracted position, so that the leg is supported on the bridge deck, so that the relative position between the second pillar 3 and the bridge deck remains stable.

[0113] The above-mentioned suspension system can be selected to include a fixed arm, a telescopic arm and a connecting arm; one end of the fixed arm is connected to the second pillar 3, and the other end is rotatably connected to the connecting arm, one end of the telescopic arm is rotatably connected to the fixed arm, and the other end is rotatably connected to an end of the connecting arm away from the fixed arm, the telescopic arm is telescoped relative to the fixed arm to drive the connecting arm to rotate relative to the fixed arm, and the first running wheel group is rotatably connected to the connecting arm.

[0114] When the telescopic arm is extended, the connecting arm rotates in the direction away from the second pillar 3, causing the first running wheel group to move in the direction away from the second pillar 3, thereby allowing the first running wheel group to be supported on the bridge deck. At this time, the first running wheel group is in the supporting position, and the outriggers are separated from the bridge deck. The first running wheel group can roll on the bridge deck and move the second pillar 3 on the bridge deck; when the telescopic arm is retracted, the connecting arm rotates in the direction close to the second pillar, causing the first running wheel group to move in the direction close to the second pillar 3, thereby separating the first running wheel group from the bridge deck. At this time, the first running wheel group is in the retracted position, with the outriggers supported on the bridge deck. The first running wheel group cannot drive the second pillar 3 to move on the bridge deck, and the relative position between the second pillar 3 and the bridge deck remains stable.

[0115] Reference Figures 1 to 5 As shown, in some embodiments, a second running mechanism 44 for supporting on the bridge deck is provided on the side of the third pillar 4 away from the arm 1, and the second running mechanism 44 can drive the third pillar 4 to drive the arm 1 to move relative to the bridge deck. In this way, the third pillar 4 can move relative to the bridge deck through the second running mechanism 44, so that the third pillar 4 drives the arm 1 to move relative to the bridge deck.

[0116] The second running mechanism 44 may include a second running wheel set, which supports the third pillar 4 on the bridge deck. The second running wheel set can drive the third pillar 4 to move relative to the bridge deck by rolling on the bridge deck, so that the third pillar 4 drives the arm 1 to move relative to the bridge deck. A motor may be provided on the second running wheel set, which can drive the second running wheel set to rotate, so that the second running wheel set can move autonomously on the bridge deck.

[0117] In some embodiments, the second running mechanism 44 includes two rolling wheels, and two first mounting portions 45 and two second mounting portions 46 are provided on the side of the third support beam assembly 42 facing away from the third cross beam 41. The two first mounting portions 45 are arranged at intervals along the lateral direction of the arm 1, and the two second mounting portions 46 are arranged between the two first mounting portions 45, and the two second mounting portions 46 are arranged at intervals along the lateral direction of the arm 1. The two first mounting portions 45 are symmetrically arranged about the midpoint of the third support beam assembly 42 along the lateral direction of the arm 1, and the two second mounting portions 46 are symmetrically arranged about the midpoint of the third support beam assembly 42 along the lateral direction of the arm 1, and the two rolling wheels are respectively connected to the two first mounting portions 45 or the two rolling wheels are respectively connected to the two second mounting portions 46.

[0118] Specifically, the first mounting portion 45 and the second mounting portion 46 can be selected as flanges provided on the transverse movable portion, the two first mounting portions 45 are provided at both ends of the transverse movable portion along the transverse direction of the machine arm 1, and the two second mounting portions 46 are provided at positions close to the middle of the transverse movable portion. The two first mounting portions 45 are symmetrical about the midpoint of the transverse movable portion, so that the third pillar 4 can be in a balanced state when the two rolling wheels are supported on the bridge deck or the ground; the two second mounting portions 46 are symmetrical about the midpoint of the transverse movable portion, so that the third pillar 4 can be in a balanced state when the two rolling wheels are supported on the bridge deck or the ground.

[0119] The above-mentioned second running mechanism 44 includes two rolling wheels, and the rotating shaft of the rolling wheels is arranged along the horizontal direction of the machine arm 1. When the bridge-building machine needs to transport double-track prefabricated box girders, the two rolling wheels are connected to the two first mounting parts 45, so that the distance between the two rolling wheels is larger, thereby improving the stability of the third pillar 4 when transporting the double-track prefabricated box girders; when the bridge-building machine needs to transport single-track prefabricated box girders, the two rolling wheels are connected to the two second mounting parts 46, so that the distance between the two rolling wheels is smaller, thereby improving the flexibility of the third pillar 4 when moving on the bridge deck or the ground when transporting the single-track prefabricated box girder.

[0120] In some embodiments, the second running mechanism 44 includes a synchronization rod 441, a steering drive, multiple steering structures and multiple wheel assemblies; the multiple steering structures are arranged on the third support beam assembly 42 at intervals along the lateral direction of the arm 1, and the multiple wheel assemblies are connected to the multiple steering structures one by one; the steering drive is arranged on the third support beam assembly 42 and is connected to any steering structure, the synchronization rod 441 is arranged on one side of the multiple steering structures along the longitudinal direction of the arm 1, and extends along the lateral direction of the arm 1, and the multiple steering structures are interconnected by the synchronization rod 441, so that the steering drive drives the multiple steering structures to rotate in the same direction and at the same angle.

[0121] Specifically, the number of wheel assemblies and steering structures can be selected to be two, and the two steering structures are arranged at intervals along the lateral direction of the arm 1. The two wheel assemblies are connected to the two steering structures, so that the two wheel assemblies support the third support beam assembly 42 on the ground; the wheel assembly includes a wheel body, and the wheel body rotates to enable the third support beam assembly 42 to move on the ground, and the direction in which the wheel body rotates on the ground is the travel direction of the wheel body assembly; when the bridge crane passes through a curved section, the wheel body rotates relative to the third support beam assembly 42, changing the travel direction of the wheel body, thereby adjusting the movement direction of the third support beam assembly 42 and the arm 1 where the third support beam assembly 42 is provided, so that the end of the arm 1 provided with the third support beam assembly 42 moves relative to the end of the arm 1 away from the third support beam assembly 42, thereby adjusting the orientation of the arm 1.

[0122] The above-mentioned wheel body assembly and steering structure can be used as a rolling wheel after being connected to each other. The two wheel body assemblies are connected to the two steering structures one by one to form two rolling wheels, and the two rolling wheels are connected to each other through a synchronization rod 441; that is, after the two steering structures are respectively connected to the two first mounting parts 45, the two wheel body assemblies are respectively connected to the two steering structures, so that the third pillar 4 can be adapted to transport double-line prefabricated box girders. At this time, the distance between the two steering structures is relatively far, and a longer synchronization rod 441 is required to connect the two steering structures; after the two steering structures are respectively connected to the two second mounting parts 46, the two wheel body assemblies are respectively connected to the two steering structures, so that the third pillar 4 can be adapted to transport single-line prefabricated box girders. At this time, the distance between the two steering structures is relatively close, and a shorter synchronization rod 441 needs to be replaced to connect the two steering structures; that is, when adjusting the distance between the two steering structures, the synchronization rod 441 of the corresponding length is replaced to achieve the connection of the two steering structures.

[0123] The above-mentioned synchronization rod 441 can be selected to include an adjustment rod and two assembly rods, and the two assembly rods are connected to the two ends of the adjustment rod by threads. Of course, the two assembly rods can also be connected to the two ends of the adjustment rod by bolts, so that the two assembly rods are detachably connected to the two ends of the adjustment rod. The two assembly rods are respectively connected to the two steering structures. When the two steering structures are respectively connected to the two first mounting parts 45, so that the third pillar 4 is adapted to the double-track prefabricated box girder, the two assembly rods are connected to the adjustment rods adapted to the distance between the two first mounting parts 45, so that the two assembly rods are arranged corresponding to the two steering structures installed on the two first mounting parts 45, so that the two assembly rods can be connected to the two steering structures. When the two steering structures are connected to the two second mounting parts 46, so that the third pillar 4 is adapted to the single-track prefabricated box girder, the two assembly rods are connected to the adjustment rods adapted to the distance between the two second mounting parts 46, so that the two assembly rods are arranged corresponding to the two steering structures installed on the two second mounting parts 46, so that the two assembly rods can be connected to the two steering structures.

[0124] The above-mentioned steering structure can be selected to be a rotating shaft that is rotatably arranged on a side of the third support beam assembly 42 away from the machine arm 1, the rotating shaft extends along the height direction of the third support beam assembly 42, the wheel assembly is connected to the rotating shaft, and the rotating shaft drives the wheel assembly to rotate relative to the third support beam assembly 42, thereby adjusting the direction of the rotating shaft of the wheel body of the wheel assembly to change the forward direction of the third support beam assembly 42 driven by the wheel body assembly, thereby adjusting the position of the machine arm 1, and facilitating the bridge erection machine to pass through curved sections. Of course, a flange plate connected to a side surface of the third support beam assembly 42 away from the machine arm 1 can also be selected as a steering structure, the flange plate is provided with a rotating shaft that is rotatably connected to the third support beam assembly 42, and the wheel assembly is connected to the flange plate, so that when the flange plate rotates relative to the third support beam assembly 42, it drives the wheel assembly to rotate relative to the third support beam assembly 42 to adjust the corresponding travel direction of the wheel body assembly.

[0125] The above-mentioned steering drive component can be selected as a hydraulic cylinder or a hydraulic cylinder. The hydraulic cylinder or the hydraulic cylinder has a telescopic end that can be extended and retracted. The hydraulic cylinder or the hydraulic cylinder is connected to the third support beam assembly 42, and the telescopic end of the hydraulic cylinder or the hydraulic cylinder is connected to the rotating shaft, so that when the telescopic end is extended and retracted, the rotating shaft can be driven to drive the wheel body assembly to rotate; of course, the steering drive component can also be selected as a motor, a rack is arranged on the periphery of the steering structure, the motor is installed on the third support beam assembly 42, and a gear is arranged at the output end of the motor, the gear at the output end of the motor is meshed with the rack at the periphery of the steering structure, and the output end of the motor rotates to drive the steering structure to rotate through the cooperation of the gear and the rack.

[0126] The above-mentioned synchronization rod 441 can be selected as a straight rod extending along the transverse direction of the arm 1. The synchronization rod 441 is arranged on the third support beam assembly 42 along the longitudinal direction of the arm 1, so that the synchronization rod 441 is located on the same side of the multiple steering structures, and the synchronization rod 441 and the multiple steering structures are at an equal distance from each steering structure in the longitudinal direction of the arm 1; thus, after the multiple steering structures are rotatably connected to the synchronization rod 441, when one steering structure rotates, it drives the synchronization rod 441 to move, and the movement of the synchronization rod 441 drives the other steering structures to rotate, so that the distance that the synchronization rod 441 moves relative to each steering structure is the same, so that the multiple steering structures can rotate in the same direction by the same angle.

[0127] A plurality of through holes may be selectively provided on the above-mentioned synchronization rod 441, and a protrusion is provided on the steering structure, which is rotatably connected to the through hole via a bolt or a pin structure, and the protrusions of the plurality of steering structures are rotatably connected to the plurality of through holes respectively and one by one, and the plurality of steering structures are rotatably connected to the synchronization rod 441 at the same time, so that when the synchronization rod 441 moves laterally along the machine arm 1, the synchronization rod 441 drives the plurality of steering structures to rotate at the same time, and the synchronization rod 441 is on one side of the plurality of steering structures, so that when the synchronization rod 441 moves, the plurality of steering structures are driven to rotate in the same direction and at the same angle.

[0128] By rotating and connecting multiple steering structures on one side of the third support beam assembly 42, multiple wheel assemblies are connected to the multiple steering structures in a one-to-one correspondence, so that the multiple wheel assemblies support the third support beam assembly 42 and the arm 1 on the ground; the synchronization rod 441 is rotationally connected to the multiple steering structures, and the steering drive is connected between a steering structure and the third support beam assembly 42, so that the steering drive drives one steering structure to rotate, and the other steering structures can be driven to rotate in the same direction and the same angle through the synchronization rod 441, so as to achieve simultaneous adjustment of the travel direction corresponding to the multiple wheel assemblies. When the third pillar 4 is traveling on a curved section, the multiple wheel assemblies adjust the travel direction according to the curved section in real time, so as to adjust the position of the arm 1 on the curved section in real time, so that the third pillar 4 moves on the center line of the curved section, so that after the bridge erection machine passes through the curved section, the arm 1 is on the center line of the subsequent section of the curved section, so as to avoid the need to adjust the direction and position of the bridge erection machine after the bridge erection machine passes through the curved section in order to perform subsequent through-hole erection operations, thereby improving the working efficiency of the bridge erection machine.

[0129] The embodiment of the present disclosure also provides a method for erecting a bridge by through-holes, including a through-hole step, wherein the through-hole step includes:

[0130] Step S1, placing the bridge erecting machine on the bridge deck of the bridge head, the second pillar 3 and the third pillar 4 are supported on the bridge deck, and the first pillar 2 is supported on the first pier at the edge of the bridge head; the bridge deck of the bridge head is in contact with a half area of ​​the first pier at the edge of the bridge head, the first pillar 2 is supported on the other half area of ​​the first pier at the edge of the bridge head, and the second pillar 3 and the third pillar 4 are supported on the bridge deck, the controller receives the detection result of the static level 5, and enables the controller to monitor whether the first settlement value is within the first set range and whether the second settlement value is within the second set range. When at least one of the first settlement value and the second settlement value exceeds the corresponding set range, it indicates that the machine arm 1 is tilted; the controller controls the first pillar 2, the second pillar 3 and the third pillar 4 to extend and retract to adjust the horizontality of the machine arm 1, so that the machine arm 1 remains in a horizontal state when the bridge erecting machine is placed on the bridge deck.

[0131] In step S1, when the first pillar 2 is supported at the first pier, the distance between the first pillar 2 and the center of the first pier along the longitudinal direction of the arm 1 is 800 mm, and a rubber plate is arranged between the first pillar 2 and the first pier so that the rubber plate is padded between the first pillar 2 and the first pier; and when the first pillar 2 is supported on the first pier, the anchor rod on the first pillar 2 is anchored to the lifting hole of the beam piece at the edge of the bridge head, so as to keep the position between the first pillar 2 and the beam piece at the edge of the bridge head stable.

[0132] Step S2, control the first pillar 2 to be in a retracted state, and synchronously drive the arm 1 and the first pillar 2 to move to the second adjacent bridge pier downstream through the second pillar 3 and the third pillar 4; the second pillar 3 can be selected to move relative to the bridge deck through the first running mechanism 34, and the third pillar 4 can be selected to move relative to the bridge deck through the second running mechanism 44. The controller monitors whether the first settlement value is within the first set range and whether the second settlement value is within the second set range. When at least one of the first settlement value and the second settlement value exceeds the corresponding set range, it indicates that the arm 1 is tilted; the controller controls the first pillar 2, the second pillar 3 and the third pillar 4 to extend and retract to adjust the horizontality of the arm 1, so that the arm 1 is kept in a horizontal state when the bridge erection machine moves on the bridge deck. Before controlling the first pillar 2 to be in a retracted state, the anchor rod is disconnected from the beam sheet at the edge of the bridge head.

[0133] Step S3 lifts the first pillar 2 to support it on the second pier to complete the through-hole operation; during the process of the first pillar 2 extending to support it on the second pier, the arm 1 may be tilted due to the telescopic accuracy of the first pillar 2. The controller monitors whether the first settlement value is within the first set range and whether the second settlement value is within the second set range. When at least one of the first settlement value and the second settlement value exceeds the corresponding set range, the arm 1 is in a tilted state. The controller controls the telescopic coordination of the first pillar 2, the second pillar 3 and the third pillar 4 to adjust the horizontality of the arm 1, so that the first settlement value remains within the first set range and the second settlement value remains within the second set range, so that the arm 1 can still remain horizontal after the bridge crane is erected through the hole.

[0134] In step S3, when the first pillar 2 is supported on the second pier, the verticality of the first pillar 2 needs to be adjusted, and the plumb bob ensures that the verticality deviation is 5mm at a height of 1m. A rubber sheet is laid on the supporting surface of the second pier, and then the first pillar 2 is supported on the rubber sheet. And the distance between the first pillar 2 in the horizontal direction of the arm 1 and the line connecting the center point of the first pier and the center point of the second pier shall not exceed 200mm.

[0135] In the through-hole steps from step S1 to step S3, the controller receives the detection results of the static level 5 to analyze and calculate the first settlement value between the reference point and the first measuring point, and the second settlement value between the reference point and the second measuring point; the controller controls the extension and retraction of the first pillar 2, the second pillar 3 and the third pillar 4 according to the first settlement value and the second settlement value until the first settlement value is within the first set range and the second settlement value is within the second set range.

[0136] When the controller detects that at least one of the first settlement value and the second settlement value exceeds its corresponding set range, the arm 1 is in a tilted state, and the controller drives the first support 2, the second support 3 and the third support 4 to extend and retract in coordination with each other to adjust the horizontality of the arm 1, thereby ensuring that the arm 1 is set horizontally throughout the entire process of through-hole operation and beam erection operation.

[0137] The first setting range can be selected as -100 to 200 mm, that is, the arm 1 at the first pillar 2 can be 0 to 100 mm lower than the arm 1 at the second pillar 3, and the arm 1 at the first pillar 2 can be 0 to 200 mm higher than the arm 1 at the second pillar 3; the second setting range can be selected as 0 to 100 mm, that is, the arm at the first pillar 2 can be 0 to 100 mm higher than the arm 1 at the third pillar 4.

[0138] In some embodiments, after the via hole step, a beam erection step is further included, and the beam erection step includes:

[0139] Step S4, driving the transport vehicle to transport the beam piece between the second support 3 and the third support 4; the third support 4 can be selected to be rotatably connected to the arm 1, and the third support 4 can be rotated between a working position perpendicular to the arm 1 and a flip position close to the arm 1. When the transport vehicle transports the beam piece, the first support 2 is supported on the second bridge pier, the second support 3 is supported on the bridge deck, and the third support 4 is rotated to the flip position, so that the transport vehicle can enter the area between the second support 3 and the third support 4 below the arm 1; of course, the first support 2 can also be selected to be supported on the second bridge pier, the second support 3 is supported on the bridge deck, and the third support 4 is disassembled, so that the transport vehicle can enter below the arm 1. The controller adjusts the horizontality of the arm 1 by controlling the first support 2 and the second support 3 to cooperate with each other to extend and retract, so that the arm 1 is set horizontally.

[0140] Step S5, control the beam crane to lift the beam piece and move it between two adjacent bridge piers; in the process of lifting the beam, since the beam piece moves on the arm 1, the center of gravity of the arm 1 changes, and the arm 1 is prone to tilt. The controller monitors in real time whether the first settlement value is within the first setting range and whether the second settlement value is within the second setting range. When at least one of the first settlement value and the second settlement value exceeds the corresponding setting range, it indicates that the arm 1 is tilted; the controller controls the first support 2, the second support 3 and the third support 4 to extend and retract to adjust the horizontality of the arm 1, so that the arm 1 remains horizontal when the bridge erection machine is placed on the bridge deck.

[0141] The controller calculates the first settlement value and the second settlement value, and controls the first support 2, the second support 3 and the third support 4 to extend and retract according to the first settlement value and the second settlement value, so that the first settlement value is within the first setting range and the second settlement value is within the second setting range. When the controller detects that at least one of the first settlement value and the second settlement value exceeds the corresponding setting range, the controller can adjust the horizontality of the arm 1 by coordinating the extension and retraction of the first support 2, the second support 3 and the third support 4, thereby ensuring that the arm 1 is set horizontally during the whole process of the through-hole operation and the beam erection operation.

[0142] The first setting range can be selected as -100 to 200 mm, that is, the arm 1 at the first pillar 2 can be 0 to 100 mm lower than the arm 1 at the second pillar 3, and the arm 1 at the first pillar 2 can be 0 to 200 mm higher than the arm 1 at the second pillar 3; the second setting range can be selected as 0 to 100 mm, that is, the arm at the first pillar 2 can be 0 to 100 mm higher than the arm 1 at the third pillar 4.

[0143] Step S6, lowering the beam pieces onto the two bridge piers to complete the bridge erection operation.

[0144] In some embodiments, before controlling the first pillar 2 to be in a retracted state and synchronously driving the arm 1 and the first pillar 2 to move to the second adjacent bridge pier downstream through the second pillar 3 and the third pillar 4, a vertical adjustment operation is also included:

[0145] Among them, the first pillar 2 can be selectively connected to the arm 1 for rotation, a protrusion can be selectively set on the first pillar 2, a protrusion is set on the lower side of the front end of the arm 1, and the protrusion of the first pillar 2 is hinged or rotationally connected to the protrusion of the arm 1 in an articulated manner, so that the rotation axis between the first pillar 2 and the arm 1 is arranged along the transverse direction of the arm 1; a telescopic cylinder is provided between the first pillar 2 and the arm 1, the telescopic cylinder is arranged along the longitudinal direction of the arm 1, the telescopic cylinder is rotationally connected to the arm 1, and the telescopic end of the telescopic cylinder is rotationally connected to the first pillar 2, and the extension and shortening of the telescopic cylinder can drive the first pillar 2 to rotate relative to the arm 1, and the power source of the telescopic cylinder is connected to the controller, so that the controller can control the extension and shortening of the telescopic cylinder, thereby controlling the angle between the first pillar 2 and the arm 1.

[0146] The above-mentioned second pillar 3 can be selectively connected to the arm 1 for rotation, and a protrusion can be selectively provided on the second pillar 3, and a protrusion is provided on the lower side of the front end of the arm 1. The protrusion of the second pillar 3 is hingedly or rotationally connected to the protrusion of the arm 1 in an articulated manner, so that the rotation axis between the second pillar 3 and the arm 1 is arranged along the transverse direction of the arm 1; a telescopic cylinder is provided between the second pillar 3 and the arm 1, and the telescopic cylinder is arranged along the longitudinal direction of the arm 1. The telescopic cylinder is rotationally connected to the arm 1, and the telescopic end of the telescopic cylinder is rotationally connected to the second pillar 3. The extension and contraction of the telescopic cylinder can drive the second pillar 3 to rotate relative to the arm 1, and the power source of the telescopic cylinder is connected to the controller, so that the controller can control the extension and contraction of the telescopic cylinder, thereby controlling the angle between the second pillar 3 and the arm 1.

[0147] The above-mentioned third pillar 4 can be selectively connected to the machine arm 1 for rotation, a protrusion can be selectively provided on the third pillar 4, a protrusion is provided on the lower side of the front end of the machine arm 1, and the protrusion of the third pillar 4 is hingedly or rotationally connected to the protrusion of the machine arm 1 in an articulated manner, so that the rotation axis between the third pillar 4 and the machine arm 1 is arranged along the transverse direction of the machine arm 1; a telescopic cylinder is provided between the third pillar 4 and the machine arm 1, the telescopic cylinder is arranged along the longitudinal direction of the machine arm 1, the telescopic cylinder is rotationally connected to the machine arm 1, the telescopic end of the telescopic cylinder is rotationally connected to the third pillar 4, the extension and contraction of the telescopic cylinder can drive the third pillar 4 to rotate relative to the machine arm 1, and the power source of the telescopic cylinder is connected to the controller, so that the controller can control the extension and contraction of the telescopic cylinder, thereby controlling the angle between the third pillar 4 and the machine arm 1.

[0148] Step S10, detecting the angle between the first support 2 and the vertical direction, the angle between the second support 3 and the vertical direction, and the angle between the third support 4 and the vertical direction. The first support 2 may be provided with a first angle sensor for detecting the angle between the first support 2 and the vertical direction, the second support 3 may be provided with a second angle sensor for detecting the angle between the second support 3 and the vertical direction, and the third support 4 may be provided with a third angle sensor for detecting the angle between the third support 4 and the vertical direction, and the verticality of the first support 2, the second support 3, and the third support 4 may be detected by the first angle sensor, the second angle sensor, and the third angle sensor. Of course, plumb lines may also be set on the front and rear sides of the longitudinal direction of the first support 2, the second support 3, and the third support 4 on the arm 1, and the verticality of the first support 2, the second support 3, and the third support 4 may be calculated according to the distances between the first support 2, the second support 3, and the third support 4 and the corresponding plumb lines.

[0149] Step S11, when the angle between the first pillar 2 and the vertical direction is greater than the first preset value, the first pillar 2 is adjusted, and when the angle between the first pillar 2 and the vertical direction is less than or equal to the first preset value, the first pillar 2 passes the detection. The first preset value can be selected as 0.4° to 0.6°, or can be selected as 0.51°; when the verticality of the first pillar 2 is measured using a plumb line, when the distance between the first pillar 2 and the plumb line is greater than 100mm, the first pillar 2 is in an inclined state; when the first pillar 2 is in an inclined state, the controller can choose to control the extension and shortening of the telescopic cylinder corresponding to the first pillar 2 to adjust the angle between the first pillar 2 and the arm 1. Of course, the staff can also choose to reinstall the first pillar 2 to manually adjust the angle between the first pillar 2 and the arm 1, thereby adjusting the verticality of the first pillar 2.

[0150] Step S12, when the angle between the second support 3 and the vertical direction is greater than the second preset value, the second support 3 is adjusted, and when the angle between the second support 3 and the vertical direction is less than or equal to the second preset value, the second support 3 passes the test. The second preset value can be selected as 0.4° to 0.6°, or 0.57°; when the verticality of the second support 3 is measured using a plumb line, when the distance between the second support 3 and the plumb line is greater than 100mm, the second support 3 is in an inclined state; when the second support 3 is in an inclined state, the controller can choose to control the extension and shortening of the telescopic cylinder corresponding to the second support 3 to adjust the angle between the second support 3 and the arm 1. Of course, the staff can also choose to reinstall the second support 3 to manually adjust the angle between the second support 3 and the arm 1, thereby adjusting the verticality of the second support 3.

[0151] Step S13, when the angle between the third pillar 4 and the vertical direction is greater than the third preset value, adjust the third pillar 4, and when the angle between the second pillar 3 and the vertical direction is less than or equal to the third preset value, the third pillar 4 passes the detection; wherein, the third preset value can be selected as 0.6 to 0.8°, or can be selected as 0.7°; when using a plumb line to measure the verticality of the third pillar 4, when the distance between the third pillar 4 and the plumb line is greater than 100mm, the third pillar 4 is in an inclined state; when the third pillar 4 is in an inclined state, the controller can choose to control the extension and shortening of the telescopic cylinder corresponding to the third pillar 4 to adjust the angle between the third pillar 4 and the arm 1. Of course, the staff can also choose to reinstall the third pillar 4 to manually adjust the angle between the third pillar 4 and the arm 1, thereby adjusting the verticality of the third pillar 4.

[0152] Repeat step S10 to step S13 until the first support 2, the second support 3 and the third support 4 all pass the inspection, and the verticality adjustment operation is completed.

[0153] In some embodiments, before driving the transport vehicle to transport the beam piece between the second pillar 3 and the third pillar 4, a positioning step is also included:

[0154] Step S41, the transport vehicle carrying the beam piece moves at a first speed until there is a first safety distance between the transport vehicle and the rear end of the arm, and then stops moving for the first time to perform a control check. The beam piece is placed on the transport vehicle, and the first speed of the transport vehicle can be selected as 0.3-2.0 km / h, and the first safety distance can be selected as 45m to 55m, and of course, it can also be selected as 50m. The control check is to perform a safety check on the control system of the bridge-building machine and the transport vehicle after the transport vehicle stops moving for the first time. Specifically, the driver of the transport vehicle obeys the command of the captain of the bridge-building machine, and the control of the transport vehicle is handed over to the captain of the bridge-building machine, that is, the various actions of the transport vehicle driver when starting to move forward again should obey the command of the captain of the bridge-building machine, and the transport vehicle should be ready for emergency stop at any time.

[0155] Step S42, the transport vehicle moves at the second speed until there is a second safety distance between the front end of the transport vehicle and the third pillar 4, and stops moving for the second time. The second speed can be selected to be 5m / min to 7m / min, and the second safety distance can be selected to be between 2.2m and 2.6m from the center of the third pillar 4, and of course the second safety distance can also be selected to be 2.4m.

[0156] Step S43, a triangular wood is placed at a preset position below the arm 1, and the transport vehicle moves at a second speed until the wheels of the transport vehicle abut against the triangular wood, and then stops moving, completing the alignment operation. Specifically, the position where the triangular wood is placed is the position where the transport vehicle needs to stop when it is placed under the arm 1. After the wheels of the transport vehicle abut against the triangular wood, the triangular wood restricts the rotation of the wheels, so that the triangular wood restricts the transport vehicle from moving toward the front end of the arm 1.

[0157] When the beam crane on the boom 1 has finished lifting the beam piece, the transport vehicle needs to exit the bridge erecting machine. Only when the distance between the transport vehicle and the rear end of the boom 1 is greater than 20m, can the triangular wood be retracted.

[0158] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0159] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge erecting machine, characterized in that: It comprises an arm (1), a controller, a static level (5) electrically connected to the controller, a first support (2), a second support (3) and a third support (4); The first support (2), the second support (3) and the third support (4) are respectively arranged at the front end, the middle part and the rear end of the machine arm (1), and are all configured to be able to extend and retract relative to the machine arm (1); The static level (5) is arranged on the machine arm (1), with the corresponding position between the machine arm (1) and the first support (2) as the reference point, the corresponding position between the machine arm (1) and the second support (3) as the first measuring point, and the corresponding position between the machine arm and the third support (4) as the second measuring point; The controller receives the detection result of the static level (5) to analyze and calculate a first settlement value between the reference point and the first measuring point and a second settlement value between the reference point and the second measuring point; The controller controls the extension and retraction of the first support (2), the second support (3) and the third support (4) so ​​that the first settlement value is within a first set range and the second settlement value is within a second set range.

2. The bridge erecting machine according to claim 1, characterized in that: The static level (5) comprises a liquid storage tank (54), a first level (51), a second level (52) and a third level (53); The first level (51), the second level (52) and the third level (53) are arranged in one-to-one correspondence with the reference point, the first measuring point and the second measuring point; The liquid storage tank (54), the first level gauge (51), the second level gauge (52) and the third level gauge (53) are sequentially connected in series via a liquid pipe (55); the liquid storage tank (54), the first level gauge (51), the second level gauge (52) and the third level gauge (53) are sequentially connected in series via a gas pipe (56), and the gas pipe (56) is connected to the atmosphere; The liquid storage tank (54) is arranged on the upper side of the first level gauge (51), the second level gauge (52) and the third level gauge (53), and the first level gauge (51), the second level gauge (52) and the third level gauge (53) respectively detect the liquid pressure value inside thereof; The first level (51), the second level (52) and the third level (53) are all electrically connected to the controller, and the controller analyzes and calculates the detection results of the first level (51), the second level (52) and the third level (53) to obtain the first settlement value and the second settlement value.

3. The bridge erecting machine according to claim 2, characterized in that: The first level gauge (51) is arranged on the upper side of the second level gauge (52) and the third level gauge (53); In the vertical direction, the distance between the second level (52) and the first level (51) is equal to the distance between the third level (53) and the first level (51); The distance between the liquid level in the liquid storage tank (54) and the second level gauge (52) or the third level gauge (53) is the measuring range, and the distance between the first level gauge (51), the liquid level in the liquid storage tank (54) and the second level gauge (52) is equal to half of the measuring range.

4. The bridge erecting machine according to claim 1, characterized in that: The first support (2) is provided with a first angle sensor for detecting the angle between the first support (2) and the vertical direction, the second support (3) is provided with a second angle sensor for detecting the angle between the second support (3) and the vertical direction, and the third support (4) is provided with a third angle sensor for detecting the angle between the third support (4) and the vertical direction.

5. The bridge erecting machine according to claim 1, characterized in that: The first support column (2) comprises a first cross beam (21), a first support beam assembly (22) and a first telescopic cylinder (23); The first crossbeam (21) and the first support beam assembly (22) are arranged opposite to each other and are slidably connected to each other, and the first crossbeam (21) is mounted on the machine arm (1); The first telescopic oil cylinder (23) is installed between the first crossbeam (21) and the first support beam assembly (22) to drive the first support beam assembly (22) to move closer to or farther from the first crossbeam (21); The first telescopic oil cylinder (23) is electrically connected to the controller.

6. The bridge erecting machine according to claim 5, characterized in that: The first support beam assembly (22) is provided with an anchor rod, and the anchor rod is used for anchoring connection with the lifting hole of the beam piece.

7. The bridge erecting machine according to claim 1, characterized in that: The second support column (3) comprises a second cross beam (31), a second support beam assembly (32) and a second telescopic cylinder (33); The second cross beam (31) and the second support beam assembly (32) are respectively arranged on the upper side and the lower side of the machine arm (1), and the two ends of the second cross beam (31) are respectively slidably connected to the two ends of the second support beam assembly (32); The second telescopic oil cylinder (33) is connected between the second cross beam (31) and the second support beam assembly (32) to drive the second support beam assembly (32) and the second cross beam (31) to move closer to or farther from each other; The second telescopic oil cylinder (33) is electrically connected to the controller.

8. The bridge erecting machine according to claim 1, characterized in that: The third support column (4) comprises a third cross beam (41), a third support beam assembly (42) and a third telescopic cylinder (43); The third cross beam (41) and the third support beam assembly (42) are arranged opposite to each other and are slidably connected to each other. The third cross beam (41) is installed on the machine arm (1). The third telescopic oil cylinder (43) is connected between the third cross beam (41) and the third support beam assembly (42) to drive the third support beam assembly (42) to approach or move away from the third cross beam (41). The third telescopic oil cylinder (43) is electrically connected to the controller.

9. The bridge erecting machine according to claim 1, characterized in that: A first running mechanism (34) for supporting the second support column (3) on a side away from the arm (1) is provided, and the first running mechanism (34) can drive the second support column (3) to drive the arm (1) to move relative to the bridge deck; And / or, a second running mechanism (44) for supporting on the bridge deck is provided on a side of the third pillar (4) away from the arm (1), and the second running mechanism (44) can drive the third pillar (4) to drive the arm (1) to move relative to the bridge deck.

10. A method for erecting beams through a hole of a bridge erecting machine, characterized in that: The method comprises a via hole step, wherein the via hole step comprises: The bridge erection machine is placed on the bridge deck of the bridge head, the second pillar (3) and the third pillar (4) are supported on the bridge deck, and the first pillar (2) is supported on the first bridge pier at the edge of the bridge head; The controller controls the first support (2) to be in a retracted state, and synchronously drives the arm (1) and the first support (2) to move to a second adjacent bridge pier downstream through the second support (3) and the third support (4); Lifting the first support column (2) to support it on the second bridge pier; The controller receives the detection result of the static level (5) to analyze and calculate a first settlement value between the reference point and the first measuring point and a second settlement value between the reference point and the second measuring point; The controller controls the first support (2), the second support (3) and the third support (4) to extend and retract according to the first settlement value and the second settlement value until the first settlement value is within a first set range and the second settlement value is within a second set range.

11. The method for erecting beams through a hole of a bridge erecting machine according to claim 10, characterized in that: After the via hole step, a beam erection step is also included, and the beam erection step includes: Driving the transport vehicle to transport the beam piece between the second support (3) and the third support (4); Controlling the beam crane to lift the beam piece and move it between two adjacent bridge piers; The controller calculates the first settlement value and the second settlement value, and controls the first support (2), the second support (3) and the third support (4) to extend and retract according to the first settlement value and the second settlement value, so that the first settlement value is within a first set range and the second settlement value is within a second set range; The beam piece is lowered onto the two bridge piers to complete the beam erection operation.

12. The method for erecting beams through a hole of a bridge erecting machine according to claim 10, characterized in that: Before controlling the first support (2) to be in a retracted state and synchronously driving the arm (1) and the first support (2) to move to a second bridge pier adjacent to the downstream through the second support (3) and the third support (4), a verticality adjustment operation is also included, and the verticality adjustment operation includes: Detecting the angle between the first support (2) and the vertical direction, the angle between the second support (3) and the vertical direction, and the angle between the third support (4) and the vertical direction; When the angle between the first support (2) and the vertical direction is greater than a first preset value, the first support (2) is adjusted; when the angle between the first support (2) and the vertical direction is less than or equal to the first preset value, the first support (2) passes the detection; When the angle between the second support (3) and the vertical direction is greater than a second preset value, the second support (3) is adjusted; when the angle between the second support (3) and the vertical direction is less than or equal to the second preset value, the second support (3) passes the detection; When the angle between the third support (4) and the vertical direction is greater than a third preset value, the third support (4) is adjusted; when the angle between the second support (3) and the vertical direction is less than or equal to the third preset value, the third support (4) passes the detection; Repeat the above steps until the first support (2), the second support (3) and the third support (4) all pass the test, and the verticality adjustment operation is completed.

13. The method for erecting beams through a hole of a bridge erecting machine according to claim 11, characterized in that: Before driving the transport vehicle to transport the beam piece between the second support (3) and the third support (4), a positioning step is also included, and the positioning step includes: The transport vehicle carrying the beam piece moves at a first speed until a first safety distance is formed between the transport vehicle and the rear end of the machine arm (1), and stops moving for the first time, and a safety check is performed on the control system of the bridge erecting machine and the transport vehicle; The transport vehicle moves at a second speed until a second safety distance is formed between the front end of the transport vehicle and the third support (4), and then stops moving for a second time; A triangular wood is placed at a preset position below the machine arm (1), and the transport vehicle moves at the second speed until the wheels of the transport vehicle abut against the triangular wood, and then stops moving, thereby completing the alignment operation.

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