Multifunctional cantilever crane assembly for supporting tunnel lagging jack

Abstract

The utility model relates to the technical field of tunnel construction equipment, and discloses a tunnel arch support multifunctional boom assembly which comprises a three-section type telescopic boom, a two-section type telescopic boom and a support assembly. The three-section type telescopic arm frame is formed by nesting a basic arm, a second-section arm and a third-section arm. A telescopic oil cylinder is arranged in the third-section arm, the left end of a cylinder rod extends out to be connected with the basic arm, and the left end of a cylinder barrel extends out to be connected with the second-section arm. The right end of the cylinder barrel is connected with an oil cylinder pulley block which is matched with an extending steel wire rope to realize the telescopic function of the boom; one end of the two-section telescopic boom is connected with the three-section telescopic boom through the connecting assembly, and the other end of the two-section telescopic boom is connected with the supporting assembly. The supporting assembly comprises a breaking hammer, a supporting frame and a gripper. According to the device, a composite telescopic scheme is adopted, the structure is simplified, synchronous telescopic of the three-section type telescopic arm is guaranteed, multiple systems are integrated to achieve multi-dimensional movement and function combination, the requirement for supporting full-process operation is met, and the equipment universality and construction efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel construction equipment technical field especially relates to a tunnel arch support multifunctional arm support assembly. BACKGROUND

[0002] In tunnel engineering construction, arch support as the key link of guaranteeing tunnel structure stability, preventing collapse, its construction efficiency and quality directly influence engineering progress and safety. With the continuous expansion of tunnel construction scale, the performance requirement of arch support equipment is increasingly improved, and the traditional arm support system exposes many technical problems, and urgent improvement.

[0003] The traditional telescopic structure of arm support usually relies on multiple oil cylinders to drive each section arm support independently, and this design not only makes the arm support structure complex and the parts numerous, increases the manufacturing cost and maintenance difficulty, but also makes the precise synchronization of each arm support difficult to realize in the telescopic process.

[0004] At the same time, the traditional arm support has low integration, and can only complete simple arch carrying and preliminary installation actions. In the face of tunnel support whole process operation, such as accurate clamping, dismounting of arch and tunnel internal crushing and other diversified tasks, it is not capable enough; In the narrow tunnel space, the operator can not realize the fine adjustment of arm action, and can not complete the complex angle, high-precision arch installation task.

[0005] Therefore, the technical personnel in the art need to develop a tunnel arch support multifunctional arm support assembly. UTILITY MODEL CONTENT

[0006] The utility model aims at solving the shortcomings in the prior art, and provides a tunnel arch support multifunctional arm support assembly.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme: a tunnel arch support multifunctional arm support assembly, including three-section telescopic arm support, the three-section telescopic arm support includes basic arm, two-section arm and three-section arm, the left end of three-section arm is sleeved in two-section arm, the left end of two-section arm is sleeved in basic arm, the inside of three-section arm is equipped with telescopic oil cylinder, the telescopic oil cylinder includes cylinder rod and cylinder barrel, the left end of cylinder rod extends out of three-section arm and two-section arm and is connected with basic arm, the left end of cylinder barrel extends out of three-section arm and is connected with two-section arm;

[0008] The right end of the cylinder is connected with an oil cylinder pulley set, the three-section arm is internally provided with an extending steel wire rope, one end of the extending steel wire rope is connected with a steel wire rope fixing base, the steel wire rope fixing base is installed on the three-section arm through bolts, the other end of the extending steel wire rope passes through the oil cylinder pulley set and extends out of the three-section arm, the two-section arm and the basic arm.

[0009] The left side of the interior of the two-section arm is connected with a two-section arm pulley set, the left end of the three-section arm is connected with a retracting steel wire rope, the other end of the retracting steel wire rope passes through the two-section arm pulley set, passes through the two-section arm and is connected to the left end of the basic arm, and the middle section of the retracting steel wire rope is located between the basic arm and the two-section arm.

[0010] Preferably, the left end of the cylinder rod is connected with the basic arm through a second pin shaft, the cylinder is connected with the two-section arm through a third pin shaft, the extending steel wire rope is connected with the basic arm through a first pin shaft, the left end of the three-section arm is connected with the retracting steel wire rope through a fourth pin shaft, and the retracting steel wire rope is fixed on the basic arm through adjusting bolts and nuts.

[0011] Preferably, the three-section telescopic arm is provided with a two-section telescopic arm along the extending direction, the two-section telescopic arm and the three-section telescopic arm are fixed through a connecting assembly, the connecting assembly comprises a hanging basket base, one end of the hanging basket base is hinged with the three-section arm, a base swing oil cylinder is arranged between the hanging basket base and the three-section arm, the other end of the hanging basket base is provided with a rotary support, and a hanging basket is connected to the upper left of the rotary support.

[0012] Preferably, the two-section telescopic arm comprises a two-section telescopic mechanical arm, the two-section telescopic mechanical arm is internally provided with a grab arm telescopic oil cylinder for its telescopic movement, the rotary support is hingedly provided with a mechanical arm hinge seat on the upper right, the mechanical arm hinge seat is rotationally connected with the two-section telescopic mechanical arm, and a mechanical arm swing oil cylinder is arranged between the mechanical arm hinge seat and the two-section telescopic mechanical arm.

[0013] Preferably, the bottom of the mechanical arm hinge seat is hingedly provided with a first connecting rod, the upper right of the rotary support is hingedly provided with a second connecting rod, the first connecting rod and the second connecting rod are rotationally connected, a grab arm pitch oil cylinder is hingedly arranged on the rotary support, the output end of the grab arm pitch oil cylinder is rotationally connected with the middle section of the second connecting rod, and the second connecting rod is a two-section bending structure.

[0014] Preferably, the top of the two-section telescopic mechanical arm is hingedly provided with a triangular hinge seat, a triangular hinge seat pitch oil cylinder is arranged between the two-section telescopic mechanical arm and the triangular hinge seat, and a supporting assembly is arranged on the triangular hinge seat.

[0015] Preferably, the supporting assembly comprises a breaking hammer hingedly connected with the triangular hinge seat, and a grab hand swing oil cylinder is arranged between the triangular hinge seat and the breaking hammer.

[0016] Preferably, the top of the breaking hammer is provided with a support frame, the bottom of the breaking hammer is provided with a grabber mounting seat, both ends of the grabber mounting seat are rotationally provided with a grabber, a grabber clamping oil cylinder is arranged between the two grabs, and the outer sides of both ends of the grabber mounting seat are provided with mounting seat limiting shafts.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] I. The composite telescopic scheme of "oil cylinder driving + pulley block steel wire rope linkage" is adopted, one oil cylinder is reduced compared with the traditional design, the structure is simplified, and the manufacturing cost is reduced. Through the ingenious steel wire rope transmission design, synchronous telescoping of the basic arm, the two-section arm and the three-section arm is realized, the running jam and wear caused by the telescoping of the arms out of synchronization are effectively avoided, and the reliability and service life of the telescoping system are significantly improved.

[0019] II. The oil cylinder configuration is reduced and the transmission structure is optimized, the overall weight of the three-section telescopic arm is greatly reduced, and the load pressure of the equipment is reduced. The synchronous telescoping mechanism cooperates with the rigid connection design to keep the center of gravity of the arm stable during operation, and even under heavy load or complex working conditions, the sway and deviation can be effectively inhibited, and the high precision and construction safety of the arch installation are ensured.

[0020] III. The integrated rotary support, multi-degree-of-freedom oil cylinder adjustment system realizes the adjustment of the angle of the hanging basket base, the 360° continuous rotation of the two-section telescopic arm, and the telescoping, pitching and swinging multi-dimensional motion of the two-section telescopic mechanical arm. At the same time, the linkage control mechanism of the breaking hammer and the grabber is equipped, which has the functions of arch clamping, dismounting and tunnel breaking, meets the operation requirements of the whole process of support, and significantly improves the universality and construction efficiency of the equipment.

[0021] IV. Each executing component is precisely driven by an independent oil cylinder, cooperates with a high-precision hydraulic control system, can realize fine adjustment of action, and ensures the completion of the arch installation task with complex angles and high precision in a small tunnel space. The system responds sensitively and can quickly adapt to the construction requirements of different section sizes and geological conditions, effectively improving the flexibility and adaptability of tunnel support operation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a front view of the three-section telescopic arm of the utility model;

[0024] Figure 3 It is Figure 2 a sectional view in the direction of A-A;

[0025] Figure 4 It is Figure 3 a sectional view in the direction of B-B;

[0026] Figure 5 is the bottom view of the three-section telescopic boom of the utility model;

[0027] Figure 6 is the Figure 5 sectional view in the direction of C-C;

[0028] Figure 7 is the bottom view of the overall structure of the utility model;

[0029] Figure 8 is the Figure 7 sectional view in the direction of D-D;

[0030] Figure 9 is the connection between the connecting assembly and the two-section telescopic boom of the utility model Figure 1 ;

[0031] Figure 10 is the connection between the connecting assembly and the two-section telescopic boom of the utility model Figure 2 ;

[0032] Figure 11 is the connection between the breaking hammer and the triangular hinge base of the utility model;

[0033] Figure 12 is the structure diagram of the breaking hammer of the utility model.

[0034] In the figure: 100-three-section telescopic boom; 110-basic arm; 111-first pin shaft; 112-second pin shaft; 113-third pin shaft; 114-fourth pin shaft; 120-two-section arm; 130-three-section arm; 140-telescopic oil cylinder; 150-oil cylinder pulley set; 160-steel wire rope for extension; 170-steel wire rope fixing seat; 180-two-section arm pulley set; 190-steel wire rope for retraction; 200-two-section telescopic boom; 210-two-section telescopic mechanical arm; 220-mechanical arm hinge base; 221-first connecting rod; 222-second connecting rod; 230-grabbing arm telescopic oil cylinder; 240-grabbing arm luffing oil cylinder; 250-mechanical arm swing oil cylinder; 260-triangular hinge base; 270-triangular hinge base luffing oil cylinder; 300-supporting assembly; 310-breaking hammer; 320-grabbing hand swing oil cylinder; 330-grabbing hand tightening oil cylinder; 340-grabbing hand; 341-grabbing hand mounting seat; 342-mounting seat limiting shaft; 350-supporting frame; 400-connecting assembly; 410-hanging basket base; 420-base swing oil cylinder; 430-hanging basket; 440-rotary support. DETAILED DESCRIPTION

[0035] The utility model is clearly described below in combination with the drawings and specific embodiments in the embodiments of the utility model, the description herein is only used to explain the utility model, but not as the limitation of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor, any modification, equivalent replacement, improvement etc. made, should be included in the protection scope of the utility model.

[0036] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] Embodiment one

[0039] Please refer to Figures 1-6 The utility model provides a technical scheme: a tunnel arch support multifunctional arm support assembly, including three section telescopic arm support 100, three section telescopic arm support 100 including basic arm 110, two section arm 120 and three section arm 130, the left end of three section arm 130 is sleeved in two section arm 120, the left end of two section arm 120 is sleeved in basic arm 110, the inside of three section arm 130 is equipped with telescopic oil cylinder 140, and telescopic oil cylinder 140 includes cylinder rod and cylinder barrel, the left end of cylinder rod extends out of three section arm 130 and two section arm 120 and is connected with basic arm 110, and the left end of cylinder barrel extends out of three section arm 130 and is connected with two section arm 120;

[0040] The right end of the cylinder is connected with the oil cylinder pulley set 150, the inside of the three-section arm 130 is provided with the extension wire rope 160, one end of the extension wire rope 160 is connected with the wire rope fixing seat 170, the wire rope fixing seat 170 is installed on the three-section arm 130 through bolts, the other end of the extension wire rope 160 is wound around the oil cylinder pulley set 150 and extends out of the three-section arm 130, the two-section arm 120 and is connected with the basic arm 110;

[0041] The inside left side of the two-section arm 120 is connected with the two-section arm pulley set 180, the left end of the three-section arm 130 is connected with the retraction wire rope 190, the other end of the retraction wire rope 190 is wound around the two-section arm pulley set 180 and passes through the two-section arm 120 and is connected with the left end of the basic arm 110, the middle section of the retraction wire rope 190 is located between the basic arm 110 and the two-section arm 120.

[0042] Further, the left end of the cylinder rod is connected with the basic arm 110 through the second pin shaft 112, the cylinder is connected with the two-section arm 120 through the third pin shaft 113, the extension wire rope 160 is connected with the basic arm 110 through the first pin shaft 111, the left end of the three-section arm 130 is connected with the retraction wire rope 190 through the fourth pin shaft 114, and the retraction wire rope 190 is fixed on the basic arm 110 through the adjusting bolt and the nut.

[0043] The basic arm 110 and the two-section arm 120 are driven to realize the telescopic movement through the telescopic oil cylinder 140, the two-section arm 120 and the three-section arm 130 are driven to realize the telescopic movement through the telescopic oil cylinder 140 and the oil cylinder pulley set 150 and the wire rope, and the arm support is pulled, so that the three-section telescopic movement is realized. Not only one oil cylinder can be reduced, but also 100% synchronous telescopic movement between the three-section arms can be realized, the weight of the arm support is reduced, and the stability of the telescopic movement of the arm support is further improved.

[0044] The extension state principle is that the basic arm 110 is always kept fixed, the cylinder rod of the telescopic oil cylinder 140 is kept fixed with the basic arm 110, the oil enters the rodless cavity of the telescopic oil cylinder 140, the cylinder rod is pushed to move forward, the cylinder drives the two-section arm 120 to move forward, one end of the extension wire rope 160 is connected with the basic arm 110, the end is kept fixed, the cylinder moves forward, the other end of the extension wire rope 160 is driven to move forward through the oil cylinder pulley set 150, the other end of the extension wire rope 160 is connected with the wire rope fixing seat 170, the wire rope fixing seat 170 is connected with the three-section arm 130, and the three-section arm 130 is driven to move forward, so that the two-section arm 120 and the three-section arm 130 are driven to move forward together when the telescopic oil cylinder 140 moves forward.

[0045] Retraction state principle: the basic arm 110 is always kept stationary, the cylinder rod is kept stationary with the basic arm 1 through the second pin shaft 112, the telescopic oil cylinder 140 has a rod cavity to enter oil, pushes the cylinder tube to move backward, the cylinder tube drives the second section arm 120 to retract backward; one end of the retraction steel wire rope 190 is connected with the basic arm 110 through the end adjusting bolt and the nut, this end is kept stationary, the cylinder tube drives the second section arm 120 to retract backward, the second section arm 120 is connected with the second section arm pulley block 180, in turn drives the other end of the retraction steel wire rope 190 to move backward through the second section arm pulley block 180, the other end of the steel wire rope is connected with the third section arm 130, in turn drives the third section arm 130 to move backward. Thus, when the telescopic oil cylinder 140 retracts, the second section arm 120 and the third section arm 130 are synchronously retracted together.

[0046] Embodiment two

[0047] Please refer to Figures 7-12 On the basis of embodiment one, the three-section telescopic arm support 100 is provided with a two-section telescopic arm support 200 along the extension direction, the two-section telescopic arm support 200 and the three-section telescopic arm support 100 are fixed through the connecting assembly 400, the connecting assembly 400 comprises a hanging basket base 410, one end of the hanging basket base 410 is hinged with the third section arm 130, and the hanging basket base 410 and the third section arm 130 are provided with the base swing oil cylinder 420, the other end of the hanging basket base 410 is provided with the rotary support 440, and the upper left of the rotary support 440 is connected with the hanging basket 430.

[0048] The base swing oil cylinder 420 is hinged with the hanging basket base 410, the other end of the base swing oil cylinder 420 is rotationally connected with the third section arm 130, thereby realizing the angle adjustment of the hanging basket base 410; the rotary support 440 adopts the 360 rotary support, realizes the continuous 360-degree rotary movement, and thereby improves the rotary angle of the two-section telescopic arm support 200.

[0049] The two-section telescopic arm support 200 comprises a two-section telescopic mechanical arm 210, the inside of the two-section telescopic mechanical arm 210 is provided with the arm telescopic oil cylinder 230 for the telescopic thereof, the upper right of the rotary support 440 is hinged with the mechanical arm hinge base 220, the mechanical arm hinge base 220 is rotationally connected with the two-section telescopic mechanical arm 210, the mechanical arm hinge base 220 and the two-section telescopic mechanical arm 210 are provided with the mechanical arm swing oil cylinder 250, the mechanical arm swing oil cylinder 250 is hinged with the mechanical arm hinge base 220, and the mechanical arm swing oil cylinder 250 is rotationally connected with the two-section telescopic mechanical arm 210; the bottom of the mechanical arm hinge base 220 is hinged with the first connecting rod 221, the upper right of the rotary support 440 is hinged with the second connecting rod 222, the first connecting rod 221 and the second connecting rod 222 are rotationally connected, the rotary support 440 is hinged with the arm tilting oil cylinder 240, the output end of the arm tilting oil cylinder 240 is rotationally connected with the middle section of the second connecting rod 222, and the second connecting rod 222 is a two-section bending structure.

[0050] The telescopic arm 210 is controlled to be telescoped by the telescopic arm telescopic cylinder 230, the telescopic arm 210 is controlled to be adjusted up and down by the telescopic arm tilting cylinder 240, and the telescopic arm 210 is controlled to swing left and right by the telescopic arm swing cylinder 250.

[0051] The top of the telescopic arm 210 is hinged with a triangular hinge base 260, the telescopic arm 210 and the triangular hinge base 260 are provided with a triangular hinge base tilting cylinder 270, the triangular hinge base 260 is provided with a supporting assembly 300, the supporting assembly 300 comprises a breaking hammer 310 hinged with the triangular hinge base 260, and the triangular hinge base 260 and the breaking hammer 310 are provided with a gripper swing cylinder 320. The triangular hinge base tilting cylinder 270 is hinged with the telescopic arm 210, the other end of the triangular hinge base tilting cylinder 270 is rotationally connected with the triangular hinge base 260, and the two ends of the gripper swing cylinder 320 are respectively hinged with the triangular hinge base 260 and the breaking hammer 310.

[0052] The breaking hammer 310 is controlled to be adjusted up and down by the triangular hinge base tilting cylinder 270, and the breaking hammer 310 is controlled to swing left and right by the gripper swing cylinder 320.

[0053] The top of the breaking hammer 310 is provided with a supporting frame 350, the bottom of the breaking hammer 310 is provided with a gripper mounting seat 341, the two ends of the gripper mounting seat 341 are rotationally provided with grippers 340, the two grippers 340 are provided with a gripper clamping cylinder 330, the two ends of the gripper mounting seat 341 are provided with mounting seat limiting shafts 342, and the two ends of the gripper clamping cylinder 330 are respectively hinged with the two grippers 340.

[0054] The two grippers 340 are controlled to be symmetrically rotated by the gripper clamping cylinder 330, the two grippers 340 are controlled to be clamped and disassembled to the arch, and the mounting seat limiting shafts 342 can prevent the two grippers 340 from being opened too large. The breaking hammer 310 is used for breaking the inside of the tunnel, and the device integrates the clamping and breaking functions.

[0055] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A multi-functional boom assembly for tunnel arch support, characterized by: The utility model provides a three-section telescopic jib (100) including a basic arm (110), a two-section arm (120) and a three-section arm (130), the left end of the three-section arm (130) is sleeved in the two-section arm (120), the left end of the two-section arm (120) is sleeved in the basic arm (110), the inside of the three-section arm (130) is equipped with telescopic oil cylinder (140), the telescopic oil cylinder (140) includes cylinder rod and cylinder barrel, the left end of the cylinder rod extends out of the three-section arm (130) and the two-section arm (120) and is connected with the basic arm (110), the left end of the cylinder barrel extends out of the three-section arm (130) and is connected with the two-section arm (120), the right end of the cylinder barrel is connected with oil cylinder pulley set (150), the inside of the three-section arm (130) is equipped with extension steel wire rope (160), one end of the extension steel wire rope (160) is connected with steel wire rope fixed seat (170), the steel wire rope fixed seat (170) is installed on the three-section arm (130) through bolt, the other end of the extension steel wire rope (160) is wound around the oil cylinder pulley set (150) and extends out of the three-section arm (130), the two-section arm (120) and is connected with the basic arm (110) after the basic arm (110), the left side inside of the two-section arm (120) is connected with two-section arm pulley set (180), the left end of the three-section arm (130) is connected with retraction steel wire rope (190), the other end of the retraction steel wire rope (190) is wound around the two-section arm pulley set (180) and passes through the two-section arm (120) and is connected in the left end of the basic arm (110), the middle section of the retraction steel wire rope (190) is located between the basic arm (110) and the two-section arm (120).

2. A multi-functional boom assembly for tunnel arch support according to claim 1, characterized in that: The left end of the cylinder rod is connected with the basic arm (110) through the second pin shaft (112), the cylinder barrel is connected with the two-section arm (120) through the third pin shaft (113), the extension steel wire rope (160) is connected with the basic arm (110) through the first pin shaft (111), the left end of the three-section arm (130) is connected with the retraction steel wire rope (190) through the fourth pin shaft (114), the retraction steel wire rope (190) is fixed on the basic arm (110) through adjusting bolt and nut.

3. A multi-functional boom assembly for tunnel arch support in accordance with claim 1, wherein: The three-section telescopic jib (100) is equipped with two-section telescopic jib (200) along the extension direction, the two-section telescopic jib (200) is fixed between the three-section telescopic jib (100) through connecting assembly (400), the connecting assembly (400) includes hanging basket base (410), one end of the hanging basket base (410) is hinged with the three-section arm (130), and the hanging basket base (410) is equipped with base swing oil cylinder (420) with the three-section arm (130), the other end of the hanging basket base (410) is equipped with rotary support (440), the upper left of the rotary support (440) is connected with hanging basket (430).

4. A multi-functional boom assembly for tunnel arch support according to claim 3, characterized in that: The two-section telescopic boom (200) comprises a two-section telescopic mechanical arm (210), an arm telescopic oil cylinder (230) is arranged in the two-section telescopic mechanical arm (210) and is used for telescoping of the two-section telescopic mechanical arm (210), a mechanical arm hinge base (220) is hingedly arranged on the upper right of the rotary support (440), the mechanical arm hinge base (220) is rotationally connected with the two-section telescopic mechanical arm (210), and a mechanical arm swing oil cylinder (250) is arranged between the mechanical arm hinge base (220) and the two-section telescopic mechanical arm (210).

5. A multi-functional boom assembly for tunnel arch support according to claim 4, wherein: A first connecting rod (221) is hingedly arranged at the bottom of the mechanical arm hinge base (220), a second connecting rod (222) is hingedly arranged on the upper right of the rotary support (440), the first connecting rod (221) is rotationally connected with the second connecting rod (222), an arm luffing oil cylinder (240) is hingedly arranged on the rotary support (440), an output end of the arm luffing oil cylinder (240) is rotationally connected with a middle section of the second connecting rod (222), and the second connecting rod (222) is a two-section bending structure.

6. A multi-functional boom assembly for tunnel arch support according to claim 5, wherein: A triangular hinge base (260) is hingedly arranged at the top of the two-section telescopic mechanical arm (210), a triangular hinge base luffing oil cylinder (270) is arranged between the two-section telescopic mechanical arm (210) and the triangular hinge base (260), and a supporting assembly (300) is arranged on the triangular hinge base (260).

7. A multi-functional boom assembly for tunnel arch support according to claim 6, wherein: The supporting assembly (300) comprises a breaking hammer (310) hingedly arranged on the triangular hinge base (260), and a gripper swing oil cylinder (320) is arranged between the triangular hinge base (260) and the breaking hammer (310).

8. A multi-functional boom assembly for tunnel arch support according to claim 7, characterized in that: A supporting frame (350) is arranged at the top of the breaking hammer (310), a gripper mounting base (341) is arranged at the bottom of the breaking hammer (310), grippers (340) are rotationally arranged at two ends of the gripper mounting base (341), a gripper clamping oil cylinder (330) is arranged between the two grippers (340), and mounting base limiting shafts (342) are arranged at the two ends of the outer side of the gripper mounting base (341).

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