An arch support trolley, an arch clamping method and an arch erecting method

Abstract

The present application provides an arch support trolley, comprising a chassis and a working device arranged on the chassis; the working device comprises a ladder slide rail arm group and left and right auxiliary working arms arranged on both sides of the ladder slide rail arm group respectively; the ladder slide rail arm group comprises a ladder arm support assembly, a traction device and a tray assembly; the tray assembly is slidingly arranged on the ladder arm support assembly and is driven by the traction device; the tray assembly comprises a posture adjusting assembly, a rotating device, a clamping assembly and a hoisting mechanism, the clamping assembly is arranged on the posture adjusting assembly through the rotating device, the rotating device is used for driving the clamping assembly to rotate forward or reversely; and the hoisting mechanism is arranged on the clamping assembly and located at one end in the clamping movement direction. In addition, the present application also provides an arch clamping method and a vertical arch method. Through the tray assembly, the arch can be hoisted and clamped from the ground, and after clamping, the arch can realize the functions of conveying, lifting and positioning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel equipment engineering machinery, in particular to an arch support trolley, an arch clamping method and an arch erecting method. BACKGROUND

[0002] Arch erecting is an essential process in tunnel construction. At present, arch erecting equipment is developing towards mechanization and automation. However, the existing arch erecting equipment still has some deficiencies. For example, the existing arch erecting equipment mostly adopts the mode of hoisting, arm support lifting or mechanical hand grabbing for arch erecting splicing. The mechanism has multiple degrees of freedom, the operation is relatively complex, and the requirements for the operator are relatively high. At the same time, most arch support equipment adopts cantilever lifting. When the load capacity of the distal end of the arm support is large, the safety of the whole vehicle is reduced, and there is a risk of overturning. In addition, most arch support equipment does not have the function of arch carrying and transporting. Arch carrying and transporting in the hole and outside the hole basically rely on other transportation or hoisting equipment, which consumes more time and has a relatively high comprehensive cost.

[0003] In view of the above, there is an urgent need for an arch support trolley, an arch clamping method and an arch erecting method to solve the problems existing in the prior art. SUMMARY

[0004] The present application aims to provide an arch support trolley, which aims to solve the problems of high operation requirements, cantilever lifting risk and high overall cost of equipment caused by the lack of arch carrying and transporting function in the existing arch erecting equipment. The specific technical scheme is as follows:

[0005] An arch support trolley comprises a chassis and a working device arranged on the chassis. The working device comprises a ladder slide rail arm group and left and right auxiliary working arms arranged on both sides of the ladder slide rail arm group. The ladder slide rail arm group comprises a ladder arm support assembly, a traction device and a tray assembly. The tray assembly is slidably arranged on the ladder arm support assembly and is driven by the traction device.

[0006] The tray assembly comprises a posture adjusting assembly, a rotating device, a clamping assembly and a hoisting mechanism. The clamping assembly is arranged on the posture adjusting assembly through the rotating device. The rotating device is used to drive the clamping assembly to rotate forward or reversely. The hoisting mechanism is arranged on the clamping assembly and located at one end in the clamping movement direction.

[0007] In the above technical scheme, preferably, the clamping assembly comprises two clamping arm groups arranged in parallel and fixedly connected through a connecting piece. The two clamping arm groups are respectively installed on both sides of the posture adjusting assembly through the rotating device. One end of each clamping arm group in the length direction is provided with a hoisting mechanism.

[0008] Preferred in the above technical solution, the clamping arm group comprises a clamping fixed beam and a clamping telescopic beam, the clamping fixed beam and the clamping telescopic beam are telescopically connected and relatively move through the driving member one, the outer ends of the clamping fixed beam and the clamping telescopic beam are provided with clamping blocks, the two clamping blocks are close to each other to clamp the arch or are away from each other to release the arch through the driving member one, and the hoisting mechanism is arranged at the outer end of the clamping fixed beam.

[0009] Preferred in the above technical solution, the posture adjusting assembly comprises a sliding base, a lifting assembly, a slewing bearing and a tray main beam, the sliding base is slidingly arranged on the ladder slide rail arm group, the lower end of the lifting assembly is connected with the sliding base, the upper end of the lifting assembly is connected with the slewing bearing, the tray main beam is hinged to the slewing bearing and is provided with a leveling telescopic member between the slewing bearing and the tray main beam, and the two ends of the tray main beam are respectively provided with rotating devices, and the rotating devices are connected with the clamping fixed beam.

[0010] Preferred in the above technical solution, the ladder arm support assembly comprises a fixed arm, a telescopic arm and a ladder track, the telescopic arm is slidingly arranged in the fixed arm, and the telescopic arm and the fixed arm relatively move through the driving member two, the ladder track is located on the outer side of the fixed arm, the upper end of the ladder track is fixedly connected with the upper end of the telescopic arm, and the tray assembly is slidingly arranged on the ladder track.

[0011] Preferred in the above technical solution, the ladder arm support assembly further comprises a fixed sliding groove, the fixed sliding groove is arranged on the outer wall of the fixed arm, and the ladder track and the fixed sliding groove are slidingly connected.

[0012] Preferred in the above technical solution, the ladder arm support assembly further comprises a leaning head, and the leaning head is arranged at the upper end of the telescopic arm.

[0013] The application further provides a method for clamping an arch by the arch support trolley, in particular a method for clamping an arch by the ladder arm support assembly, and the specific clamping steps are as follows after the tray assembly is moved to the end close to the arch:

[0014] Step A1: the rotating device is reversely rotated to adjust the clamping assembly to an inclined state, at this time, the hoisting mechanism is located at the upper end and is located close to one side of the arch, and the clamping assembly is in a released state;

[0015] Step A2: the steel wire rope of the hoisting mechanism is connected with the lifting point of one side of the arch, then the hoisting mechanism is wound to lift the arch, and when the lifting point of the arch is close to the hoisting mechanism, the winding of the steel wire rope is stopped;

[0016] Step A3: the rotating device is forwardly rotated, and the clamping assembly lifts the other side of the arch from below away from the end of the hoisting mechanism; when the clamping assembly is in a horizontal state, the rotating device stops rotating;

[0017] Step A4: the clamping assembly clamps the arch, and the clamping of the arch is completed.

[0018] In the above technical solution, preferably, in step A2, the two hoisting mechanisms on the clamping assembly are connected to the two hoisting points on the same side of the arch; and the two hoisting points are located at the middle part of the arch and are symmetrically arranged.

[0019] The present application also provides a method for erecting an arch by using the arch support trolley, and the specific steps are as follows:

[0020] Step S1: prefabricate the middle arch, the left arch and the right arch; wherein the left arch and the right arch are transported to the working face by a conveying device;

[0021] Step S2: the arch support trolley is outside the tunnel, the ladder arm assembly is first adjusted to an inclination angle α, and the tray assembly is slid to one end close to the middle arch, so that the clamping of the middle arch is completed; after the clamping of the middle arch is completed by the tray assembly, the ladder arm assembly is adjusted back to the horizontal state, and the posture of the middle arch is adjusted by the tray assembly;

[0022] Step S3: the length direction of the middle arch is adjusted to be in the same direction as the length direction of the ladder arm assembly; the middle arch moves to the working face together with the arch support trolley;

[0023] Step S4: the ladder arm assembly is inclined, and the leaning head is leaned against the working face; the posture of the middle arch is adjusted, the tray assembly transports the middle arch to the tunnel vault along the ladder track, and the erecting operation of the middle arch is completed;

[0024] Step S5: the left auxiliary working arm and the right auxiliary working arm respectively grab the left arch and the right arch, and lift them to the corresponding installation positions, so that the splicing with the middle arch is completed;

[0025] Step S6: the ladder sliding rail arm group, the left auxiliary working arm and the right auxiliary working arm are cooperatively actuated to adjust the position and posture of the middle arch, the left arch and the right arch, and to complete the fixation;

[0026] Step S7: the welding operation of the mesh and the connecting rib between the middle arch, the left arch and the right arch is completed by the construction personnel through the hanging baskets on the left auxiliary working arm and the right auxiliary working arm;

[0027] Step S8: the erecting operation is completed, and the arch support trolley exits the scene.

[0028] The technical solution of the present application has the following beneficial effects:

[0029] The trolley based on the principle of the ladder stand can be arched, and can be suitable for tunnel arching operation of full-face method or various step method excavation. The arch frame can be conveniently hoisted and clamped from the ground through the tray assembly, and after clamping, the arch frame conveying, lifting and positioning functions can be realized, the whole process is stable and reliable, and the operation is simple; compared with the previous hoisting and conveying and complex operation of mechanical hand grabbing, the present application can be completed in one station, thereby greatly improving the work efficiency.

[0030] The leaning head at the upper end of the telescopic arm can be supported on the tunnel face or surrounding rock, avoiding the conventional cantilever structure, thereby improving the stress condition, effectively avoiding the risk of overturning of the vehicle body, and improving the safety of the whole machine; at the same time, the requirement for structural strength can be reduced, thereby saving the cost of the whole machine.

[0031] After the tray assembly clamps the arch frame, the arch frame can be transferred above the trolley, and the arch frame can be transported from outside the tunnel hole to inside the tunnel hole by using the trolley itself. The left and right auxiliary working arms can receive the arch frame section conveyed by the ladder slide rail assembly, thereby also solving the problem of arch frame conveying in front and back of the hole. The tray assembly has multiple direction movement functions, and can realize attitude adjustment of the arch frame.

[0032] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiments of the application and assist in the explanation of the application. In the drawings:

[0034] Figure 1 is a schematic view of the overall structure of the arch support trolley;

[0035] Figure 2 is a schematic view of the structure of the arch support trolley after the left and right auxiliary working arms are hidden;

[0036] Figure 3 is an exploded view of the ladder slide rail arm group;

[0037] Figure 4 is a schematic view of the structure of the tray assembly;

[0038] Figure 5 is a schematic view of the arch support trolley after clamping the arch frame;

[0039] Figure 6 is a schematic view of the state of the ladder slide rail arm group lifting the arch frame;

[0040] Figure 7 is a schematic view of the state of the arch support trolley conveying the arch frame;

[0041] Figure 8 is the right auxiliary working arm arch support state schematic diagram;

[0042] Figure 9 is the arch support trolley arch erection operation schematic diagram;

[0043] Figure 10a is the tray assembly working state one schematic diagram;

[0044] Figure 10b is the tray assembly working state two schematic diagram;

[0045] Figure 10c is the tray assembly working state three schematic diagram;

[0046] Figure 10d is the tray assembly working state four schematic diagram;

[0047] Figure 10e is the tray assembly working state five schematic diagram;

[0048] wherein:

[0049] 1, chassis, 2, working device, 3, arch;

[0050] 11, traveling device, 12, power unit, 13, vehicle frame;

[0051] 21, ladder slide rail arm group, 22, left auxiliary working arm, 23, right auxiliary working arm;

[0052] 211, ladder arm assembly, 212, tray assembly, 213, traction device;

[0053] 2111, fixed arm, 2112, telescopic arm, 2113, fixed sliding groove, 2114, ladder track, 2115, leaning head;

[0054] 2121, sliding base, 2122, lifting assembly, 2123, rotary support, 2124, tray main beam, 2125, rotating device, 2126, clamping fixed beam, 2127, clamping telescopic beam, 2128, hoisting mechanism;

[0055] 231, right hanging basket, 232, right mechanical hand. DETAILED DESCRIPTION

[0056] In order to facilitate the understanding of the present application, the present application will be described more fully below, and the preferred embodiments of the present application are given. However, the present application can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0058] Example 1:

[0059] This embodiment provides a pallet assembly 212 for clamping the arch frame 3, such as Figure 4 As shown.

[0060] The pallet assembly 212 includes a posture adjustment assembly, a rotating device 2125, a clamping assembly, and a lifting mechanism 2128. The clamping assembly is disposed on the upper end of the posture adjustment assembly via the rotating device 2125. The rotating device 2125 is used to drive the clamping assembly to rotate in the forward or reverse direction. The clamping assembly is used to clamp the arch frame. The lifting mechanism 2128 is disposed on the clamping assembly and located at one end in the clamping movement direction.

[0061] The clamping assembly includes two clamping arm groups arranged in parallel, and the two clamping arm groups are fixedly connected by a connector. The two clamping arm groups are respectively installed on both sides of the attitude adjustment assembly by a rotating device 2125. Each clamping arm group has a hoisting mechanism 2128 at one end in the length direction.

[0062] Specifically, the clamping arm assembly includes a clamping and fixing beam 2126 and a clamping and telescopic beam 2127. The clamping and fixing beam and the clamping and telescopic beam are telescopically connected (i.e., the clamping and telescopic beam is slidably disposed inside the clamping and fixing beam) and the two move relative to each other through a driving component. The outer ends of the clamping and fixing beam 2126 and the clamping and telescopic beam 2127 are provided with clamping blocks (in this embodiment, the outer ends refer to the end of the clamping and fixing beam away from the clamping and telescopic beam, and the end of the clamping and telescopic beam away from the clamping and fixing beam, respectively). The driving component enables the two clamping blocks to move closer to each other to clamp the arch frame, or to move away from each other to release the arch frame.

[0063] Specifically, the clamping and fixing beam 2126 is mounted on the attitude adjustment assembly via a rotating device 2125, and the hoisting mechanism 2128 is located at the outer end of the clamping and fixing beam; the hoisting mechanism 2128 is preferably a winch.

[0064] Preferably, the posture adjusting assembly comprises a sliding base 2121, a lifting assembly 2122, a slewing bearing 2123 and a tray main beam 2124, the lower end of the lifting assembly 2122 is provided with the sliding base 2121, the upper end is provided with the slewing bearing 2123, the middle part of the tray main beam 2124 is hinged to the slewing bearing 2123 and a leveling telescopic piece (not shown) is arranged therebetween. The sliding base 2121 is used to realize sliding arrangement of the whole tray assembly on the lower layer member (such as a track, a slide, etc.), so that the whole tray assembly can slide.

[0065] As shown in Figure 4 , the lifting assembly 2122 can realize position adjustment of the slewing bearing, the tray main beam, the clamping assembly and the hoisting mechanism together in the z direction; the leveling telescopic piece can drive the tray main beam 2124 to swing around the hinge point, that is, the tray main beam swings around the y direction; the slewing bearing can drive the tray main beam, the rotating device, the clamping assembly and the hoisting mechanism to rotate around the z direction; and the rotating device can drive the clamping assembly and the hoisting mechanism to rotate around the x direction.

[0066] Specifically, rotating devices 2125 are arranged at both ends of the tray main beam, and two clamping arm groups are arranged at both ends of the tray main beam, and the clamping assembly rotates forward or reversely around the axis of the tray main beam (that is, the x direction).

[0067] Preferably, the driving piece and the leveling telescopic piece are preferably oil cylinders or air cylinders; and the rotating device 2125 is a prior art, which can be directly purchased from existing products.

[0068] Referring to Figures 10a-10e , the specific method for clamping the arch 3 by the tray assembly in the embodiment is as follows:

[0069] Step A1: the rotating device 2125 reversely rotates to adjust the clamping assembly to an inclined state, at this time, the hoisting mechanism 2128 is located at the upper end and close to one side of the arch, and the clamping assembly is in a loosened state;

[0070] Step A2: the steel wire rope of the hoisting mechanism 2128 is connected to the lifting point of one side of the arch 3, and then the hoisting mechanism 2128 retracts the steel wire rope to hoist the arch 3, as shown in Figure 10a and Figure 10b ; when the lifting point of the arch 3 is close to the hoisting mechanism, the retraction of the steel wire rope is stopped, as shown in Figure 10c ;

[0071] Step A3: the rotating device is forwardly rotated, and the end of the clamping assembly away from the hoisting mechanism hoists the other side of the arch from below, as shown in Figure 10d ; when the clamping assembly is in a horizontal state, the rotating device stops rotating, as shown in Figure 10e ;

[0072] Step A4: the clamping assembly clamps the arch, and the clamping of the arch is completed.

[0073] Preferably, after the clamping of the arch is completed, the tray assembly and the arch move together to the installation position; after reaching the installation position, the posture of the arch is adjusted; specifically, the rotation device 2125, the lifting assembly 2122, the slewing bearing 2123, and the leveling telescopic piece are used to achieve the desired posture position of the arch.

[0074] Preferably, in the step A2, the two lifting mechanisms on the clamping assembly are connected to the two lifting points on the same side of the arch; preferably, the two lifting points on the arch are located in the middle part of the arch and are symmetrically arranged, so that the arch is in a relatively balanced state when the arch is lifted, facilitating the subsequent lifting of the arch.

[0075] Preferably, in the step A3, the other side of the arch is lifted by clamping the outer end of the telescopic beam 2127.

[0076] Preferably, when positioning the connecting piece, attention should be paid to prevent the connecting piece from interfering with the tray main beam or the slewing bearing in step A1.

[0077] Embodiment 2:

[0078] The present embodiment provides an arch support trolley, as shown in Figures 1-9 The arch support trolley comprises a chassis 1 and a working device 2 arranged on the chassis 1; the working device 2 comprises a ladder slide rail arm group 21 and left and right auxiliary working arms 22 and 23 arranged on the left and right sides of the ladder slide rail arm group 21, respectively. The ladder slide rail arm group 21 is used to complete the positioning and installation of the intermediate arch, or is used to transport the arch; the left and right auxiliary working arms are used to assist in completing the functions such as grabbing and splicing of the left and right arches.

[0079] Referring to Figure 2 and Figure 3 , the ladder slide rail arm group 21 comprises a ladder arm assembly 211, a traction device 213, and the tray assembly 212 described in embodiment 1; the ladder arm assembly 211 comprises a fixed arm 2111, a telescopic arm 2112, and a ladder rail 2114, the telescopic arm 2112 is slidingly arranged in the fixed arm 2111, and the two are relatively movable through a second driving piece; the ladder rail 2114 is located on the outside of the fixed arm, and the upper end of the ladder rail 2114 is fixedly connected with the upper end of the telescopic arm; the tray assembly 212 is slidingly arranged on the ladder rail 2114 and is driven by the traction device 213. The second driving piece is preferably an oil cylinder or an air cylinder.

[0080] Preferably, the traction device 213 in the embodiment is arranged at the upper end of the telescopic arm; the traction device is driven by a chain wheel and chain or a steel wire rope and pulley set cooperating with a power element, wherein a motor, a hydraulic motor, an oil cylinder or an air cylinder can be selected as the power element; this is a common structure in the field, and will not be described in detail in the embodiment.

[0081] Specifically, the upper end in the embodiment refers to the end close to the working face during operation.

[0082] Further, the ladder arm assembly 211 further comprises a fixed sliding groove 2113 arranged on the outer wall of the fixed arm, and the ladder track 2114 is in sliding connection with the fixed sliding groove 2113.

[0083] Specifically, the upper side and the lower side of the ladder track 2114 are both provided with sliding rails; the sliding rail on the upper side is used for sliding connection with the sliding base 2121 to realize sliding of the tray assembly; and the sliding rail on the lower side is used for sliding connection with the fixed sliding groove 2113, and the fixed sliding groove plays a guiding role on the ladder track during telescopic movement of the telescopic arm.

[0084] Further, the ladder arm assembly 211 further comprises a leaning head 2115 arranged at the upper end of the telescopic arm 2112, and the leaning head is used for leaning the upper end of the ladder arm assembly on the working face during operation to prevent the ladder arm assembly from being in a cantilever structure during operation, thereby improving the stress condition, effectively avoiding the risk of overturning of the vehicle body, and improving the safety of the whole machine; at the same time, this design can reduce the requirement for structural strength, thereby saving the cost of the whole machine.

[0085] Preferably, the lower end of the fixed arm 2111 is hinged to the chassis 1 and performs pitching movement through an oil cylinder or an air cylinder.

[0086] In some embodiments, the lower end of the fixed arm can be hinged to the rotating part of the rotating assembly, and the oil cylinder or the air cylinder for pitching is respectively hinged to the fixed arm and the rotating part of the rotating assembly, so that the ladder arm assembly 211 can perform pitching and rotating movement.

[0087] Referring to Figure 1 , the left auxiliary working arm and the right auxiliary working arm both comprise a working boom, a basket and a mechanical hand, wherein the working boom can realize telescopic, pitching and rotating movement, and the basket and the mechanical hand are arranged at the upper end of the working boom. In addition to assisting in installation of the left and right side arches, the left and right auxiliary working arms can also assist in completing welding, high-altitude operation such as measurement. The left and right auxiliary working arms are common structure forms in the field, and will not be described in detail in the embodiment.

[0088] The ladder rail arm group 21 in the embodiment can transport the arch by the tray assembly 212, as shown in the figure; when the arch is clamped on the tray assembly, the swivel support rotates 90 degrees to make the length direction of the arch same as the length direction of the ladder arm assembly, so as to realize the transportation of the arch together with the trolley to the working face. Figure 7

[0089] Meanwhile, when the arches are transported in batches into the tunnel, the ladder rail arm group can also provide the arches for the left auxiliary working arm and the right auxiliary working arm in the working state; Figure 8 The right auxiliary working arm 23 can realize the arch standing operation by the right hanging basket 231 and the right mechanical arm 232.

[0090] The chassis 1 in the embodiment comprises a traveling device 11, a power unit 12 and a vehicle frame 13, wherein the working device 2 is arranged on the vehicle frame 13, and the traveling device 11 and the power unit 12 are arranged on the lower side of the vehicle frame; the traveling device 11 is used to realize the traveling of the whole vehicle, and the power unit 12 provides driving energy for the whole vehicle, which can be in the form of electric energy, hydraulic energy, high-pressure gas or mechanical energy.

[0091] The embodiment also provides a method for the arch supporting trolley to perform the arch standing operation, and the specific steps are as follows:

[0092] Step S1: prefabricating the intermediate arch, the left arch and the right arch; wherein the left arch and the right arch are transported to the working face by the conveying equipment;

[0093] Step S2: the arch supporting trolley is outside the tunnel, the tray assembly is slid to the end close to the intermediate arch, and the clamping of the intermediate arch is completed according to steps A1-A4;

[0094] Step S3: after the clamping of the intermediate arch is completed, the length direction of the intermediate arch is adjusted to be same as the length direction of the ladder arm assembly; the intermediate arch moves to the working face together with the arch supporting trolley;

[0095] Step S4: the ladder arm assembly 211 performs the pitching, and the leaning head leans on the working face; the posture of the intermediate arch is adjusted, the tray assembly 212 conveys the intermediate arch to the tunnel vault along the ladder rail 2114, and the arch standing operation of the intermediate arch is completed;

[0096] Step S5: the left auxiliary working arm and the right auxiliary working arm respectively grab the left arch and the right arch and lift to the corresponding installation positions, and the splicing with the intermediate arch is completed;

[0097] ​Step S6: through the ladder slide rail arm group, the left auxiliary working arm and the right auxiliary working arm, the position and posture of the middle arch, the left arch and the right arch are adjusted, and the fixing is completed;

[0098] Step S7: the construction personnel complete the welding work of the mesh and the connecting rib between the middle arch, the left arch and the right arch by means of the hanging baskets on the left auxiliary working arm and the right auxiliary working arm;

[0099] Step S8: the arch erection work is completed, and the arch support trolley retreats.

[0100] Preferably, in the step S2, the ladder arm assembly 211 is first pitched by an angle α, and then the tray assembly clamps the middle arch; wherein the angle α is greater than 0° and less than 90°; in this way, the clamping action of the tray assembly on the arch is further facilitated.

[0101] Preferably, in the step S2, after the tray assembly clamps the middle arch, the ladder arm assembly is adjusted back to the horizontal state, and the posture of the middle arch is adjusted by the tray assembly.

[0102] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A centering jumbo trolley, characterized in that, The application relates to a ladder truck, which comprises a chassis (1) and a working device (2) arranged on the chassis; the working device (2) comprises a ladder rail arm group (21) and left and right auxiliary working arms (22 and 23) arranged on the two sides of the ladder rail arm group respectively; the ladder rail arm group (21) comprises a ladder arm frame assembly (211), a traction device (213) and a tray assembly (212); the tray assembly is slidably arranged on the ladder arm frame assembly and is driven by the traction device. The tray assembly (212) comprises a posture adjusting assembly, a rotating device (2125), a clamping assembly and a hoisting mechanism (2128); the clamping assembly is arranged on the posture adjusting assembly through the rotating device (2125); the rotating device (2125) is used for driving the clamping assembly to rotate in a forward direction or a reverse direction; the hoisting mechanism (2128) is arranged on the clamping assembly and located at one end in the clamping movement direction. The ladder arm frame assembly (211) comprises a fixed arm (2111), a telescopic arm (2112) and a ladder rail (2114); the telescopic arm (2112) is slidably arranged in the fixed arm (2111) and realizes relative movement through a driving member two; the ladder rail (2114) is located outside the fixed arm; the upper end of the ladder rail (2114) is fixedly connected with the upper end of the telescopic arm; and the tray assembly (212) is slidably arranged on the ladder rail (2114).

2. The arch support trolley as claimed in claim 1, wherein, The clamping assembly comprises two clamping arm groups arranged in parallel and fixedly connected through a connecting member; the two clamping arm groups are respectively installed on the two sides of the posture adjusting assembly through the rotating device (2125); and one end of the single clamping arm group in the length direction is provided with the hoisting mechanism (2128).

3. A centering and jacking trolley according to claim 2, characterised in that, The clamping arm group comprises a clamping fixed beam (2126) and a clamping telescopic beam (2127); the clamping fixed beam and the clamping telescopic beam are telescopically sleeved and realize relative movement through a driving member one; the outer ends of the clamping fixed beam (2126) and the clamping telescopic beam (2127) are respectively provided with clamping blocks; the two clamping blocks realize clamping of the arch through approaching each other or releasing the arch through moving away from each other through the driving member one; and the hoisting mechanism (2128) is arranged at the outer end of the clamping fixed beam.

4. A centering jumbo trolley according to claim 3, characterised in that, The posture adjusting assembly comprises a sliding base (2121), a lifting assembly (2122), a slewing bearing (2123) and a tray main beam (2124); the sliding base is slidably arranged on the ladder rail arm group (21); the lower end of the lifting assembly (2122) is connected with the sliding base (2121); the upper end of the lifting assembly (2122) is connected with the slewing bearing (2123); the tray main beam (2124) is hinged on the slewing bearing (2123) and is provided with a leveling telescopic member between the slewing bearing (2123) and the tray main beam (2124); and the two ends of the tray main beam are respectively provided with the rotating device (2125) connected with the clamping fixed beam (2126).

5. The arch support trolley as claimed in claim 1, wherein, The ladder arm frame assembly (211) further comprises a fixed sliding groove (2113) arranged on the outer wall of the fixed arm (2111), and the ladder rail (2114) is in sliding connection with the fixed sliding groove (2113).

6. The arch support trolley as claimed in claim 1, wherein, The ladder arm frame assembly (211) further comprises a leaning head (2115) arranged on the upper end of the telescopic arm (2112).

7. A method of clamping arches in an arching support trolley according to any one of claims 1-6, characterized in that, The specific clamping steps after the tray assembly is moved to the end close to the arch are as follows: Step A1: the rotating device is reversely rotated to adjust the clamping assembly to an inclined state, at this time, the hoisting mechanism is located at the upper end and is located close to one side of the arch, and the clamping assembly is in a loosened state; Step A2: the steel wire rope of the hoisting mechanism is connected to the lifting point on one side of the arch, and then the hoisting mechanism retracts the steel wire rope to lift the arch; when the lifting point of the arch is close to the hoisting mechanism, the retraction of the steel wire rope is stopped; Step A3: the rotating device is forwardly rotated, and the end of the clamping assembly away from the hoisting mechanism lifts the other side of the arch from below; when the clamping assembly is in a horizontal state, the rotating device stops rotating; Step A4: the clamping assembly clamps the arch, and the clamping of the arch is completed.

8. The method of clamping arches of claim 7, wherein, In the step A2, the two hoisting mechanisms on the clamping assembly are connected to two lifting points on the same side of the arch; wherein the two lifting points are located at the middle position of the arch and are symmetrically arranged.

9. A method of erecting arches of an arching support trolley according to any one of claims 1 to 6, characterized in that The specific steps are as follows: Step S1: prefabricate the intermediate arch, the left arch and the right arch; wherein the left arch and the right arch are transported to the working face by the conveying equipment; Step S2: the arch support trolley is outside the tunnel, first, the ladder arm frame assembly is pitched by an angle α, and the tray assembly is slid to the end close to the intermediate arch, and the clamping of the intermediate arch is completed; after the tray assembly completes the clamping of the intermediate arch, the ladder arm frame assembly is adjusted back to the horizontal state, and the posture of the intermediate arch is adjusted through the tray assembly; Step S3: the length direction of the intermediate arch is adjusted to be in the same direction as the length direction of the ladder arm frame assembly; the intermediate arch moves to the working face together with the arch support trolley; Step S4: the ladder arm frame assembly is pitched, and the leaning head leans on the working face; the posture of the intermediate arch is adjusted, the tray assembly transports the intermediate arch to the tunnel vault along the ladder rail, and the arch erection of the intermediate arch is completed; Step S5: the left auxiliary working arm and the right auxiliary working arm respectively grab the left arch and the right arch, and are lifted to the corresponding installation positions, and the splicing with the intermediate arch is completed; Step S6: the ladder sliding rail arm group, the left auxiliary working arm and the right auxiliary working arm cooperatively act to complete the position and posture adjustment of the intermediate arch, the left arch and the right arch, and the fixation is completed; Step S7: the construction personnel complete the welding work of the mesh and the connecting rib between the intermediate arch, the left arch and the right arch by means of the hanging baskets on the left auxiliary working arm and the right auxiliary working arm; Step S8: the arch erection is completed, and the arch support trolley exits.

Images