Tunnel cloth maintenance device

Abstract

The utility model relates to a tunnel material distribution maintenance device which comprises a walking platform, an arm support system arranged on the walking platform, an operation platform arranged on the arm support system and a hydraulic control system for controlling all the parts to act. The cantilever system comprises a rotary platform rotationally arranged on the walking platform, a cantilever with the bottom hinged to the rotary platform, and an L-shaped arm hinged to the top end of the cantilever; the operating platform comprises a lifting mechanism installed on the L-shaped arm and an operating basket which is arranged on the L-shaped arm in a lifting mode and driven by a lifting oil cylinder of the lifting mechanism. The device is simple in structure, easy to operate, good in safety and high in construction efficiency.

Description

Technical Field

[0001] The utility model relates to a tunnel material distribution maintenance device, belonging to the technical field of tunnel material distribution equipment. Background Art

[0002] The implementation of the planning and construction of the domestic expressway network, especially the construction of multiple high-speed railway lines in China, is mainly concentrated in the western region. The terrain is mainly mountainous and tunnels account for a large proportion. The demand for equipment will increase year by year. With the start of construction of the Sichuan-Tibet Railway, the demand for tunnel material distribution and maintenance equipment will also increase. Tunnel material distribution equipment plays a key role in tunnel grouting maintenance construction. With the continuous deepening of tunnel construction and the increase in projects, the equipment demand for tunnel material distribution machines continues to increase, and the requirements for equipment use also increase. However, the existing tunnel material distribution equipment has no boom system, and the equipment and grouting point position need to be reconnected every time. It can only realize the downward transportation of concrete, and cannot realize the distribution of various dimensions and heights. It is necessary to manually connect the pipeline from high to low. Due to the manual docking of pipelines at different heights and angles, the operation is complicated, the work efficiency is low, and the safety is low; the mechanism is large and complex, and it cannot be transformed into intelligent technology, which greatly increases the construction cost and affects the efficiency of tunnel construction.

[0003] Chinese patent application CN114483096A discloses an automatic material distribution device for tunnel invert construction, including a support block that can move along the length direction of the invert trestle, the support block is connected to the material distribution trough and drives the material distribution trough to swing, so as to achieve material distribution at different positions of the tunnel. However, the arm system of this scheme is not flexible enough, and has only the degree of freedom in the length direction of the arm and the vertical swing, and can only achieve the distribution of concrete from high to low. It is necessary to constantly adjust the position and angle of the material distribution device to cover part of the tunnel. The operation is complicated and the efficiency is low, which cannot meet the current requirements of tunnel grouting material distribution construction.

[0004] Therefore, there is an urgent need for a tunnel material distribution and maintenance device with simple structure, simple operation, good safety and high construction efficiency. Summary of the invention

[0005] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a tunnel material distribution and maintenance device with simple structure, simple operation, good safety and high construction efficiency.

[0006] The purpose of the utility model is achieved in this way:

[0007] A tunnel material distribution maintenance device comprises a walking platform, a boom system arranged on the walking platform, an operating platform arranged on the boom system, and a hydraulic control system for controlling the actions of various parts; a conveying pipeline connected between the walking platform, the boom system and the operating platform is provided for conveying concrete to the operating platform;

[0008] The arm system comprises a slewing platform rotatably arranged on the walking platform, a cantilever hingedly mounted on the slewing platform at the bottom, and an L-shaped arm hingedly mounted on the top of the cantilever; the slewing platform is driven by a hydraulic motor to slew; a variable-length oil cylinder is hingedly connected between the slewing platform and the cantilever to control the cantilever to make a pitching movement; a leveling oil cylinder is hingedly connected between the cantilever and the L-shaped arm to control the L-shaped arm to make a pitching movement; a follower oil cylinder is also hingedly connected between the slewing platform and the cantilever;

[0009] The operating platform comprises a lifting mechanism installed on the L-shaped arm, and an operating basket installed on the L-shaped arm driven by a lifting cylinder of the lifting mechanism;

[0010] The hydraulic control system includes an oil tank and a main hydraulic pump. Corresponding electromagnetic reversing valves are respectively provided on the pipelines connecting the main hydraulic pump with the hydraulic motor, the boom cylinder, the leveling cylinder and the lifting cylinder; the rod chamber and the rodless chamber of the leveling cylinder and the follower cylinder are connected in parallel, and the rod chamber and the rodless chamber pipelines of the leveling cylinder and the follower cylinder are respectively connected to the return oil pipeline of the hydraulic control system through a one-way valve to replenish the oil of the leveling cylinder and the follower cylinder; a hydraulic interlocking valve is provided on the pipeline connecting the leveling cylinder and the follower cylinder with the electromagnetic reversing valve to prevent the hydraulic oil in the leveling cylinder and the follower cylinder from leaking through the electromagnetic reversing valve.

[0011] Furthermore, the walking platform is a rail flat car or an engineering vehicle chassis, which is respectively suitable for railway tunnel construction or highway tunnel construction.

[0012] Furthermore, the rotating platform includes a primary turntable, a rotating arm, a secondary turntable and a rotating seat; the rotating arm is horizontally arranged, and one end of the rotating arm is rotatably arranged on the walking platform through the primary turntable; the rotating seat is rotatably arranged on the other end of the rotating arm through the secondary turntable, and the arm system is hingedly mounted on the rotating seat.

[0013] Furthermore, a transfer pipeline and a rotary joint connecting the walking platform and the concrete conveying pipeline of the boom system are provided in the rotary platform.

[0014] Furthermore, the cantilever includes a base arm and a telescopic arm which is slidably arranged in the base arm and driven by a telescopic cylinder in the base arm to perform a telescopic action.

[0015] Furthermore, the hydraulic control system is provided with a main power system, including a main hydraulic pump, a relief valve and a main check valve; the high-pressure oil pumped out by the main hydraulic pump passes through the main check valve, passes through a high-pressure oil filter and then connects to each electromagnetic reversing valve to provide power for the operation of each part of the tunnel material distribution maintenance device.

[0016] Furthermore, the hydraulic control system is provided with an emergency power system, including an emergency hydraulic pump, an emergency reversing valve and an emergency one-way valve, which are connected in parallel with the main power system and then connected to a high-pressure oil filter as an emergency power source.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides an arm system with a rotating platform on the walking platform, so that the operating platform on the arm system can cover a wider material distribution area, ensure the material distribution range in the tunnel, and increase the flexibility of material distribution; when the arm height is adjusted, the follow-up degree of the follow-up oil cylinder automatically supplies oil to the leveling oil cylinder, so as to always ensure that the operating platform is in a horizontal state, and ensure the safety of personnel in the operating platform;

[0019] After derrick hoists and puts in place, stamp fixedly derrick of derrick pin, then, by derrick of derrick shaft, the oil circuit that derrick of derrick pins and pins is closed, thus makes the oil circuit breaker for derrick of derrick pins and pins to be used for the test of derrick of derrick shaft.

[0020] The hydraulic control system of the utility model connects a main power system including a main hydraulic pump, an overflow valve and a non-return valve, and an emergency power system including an emergency hydraulic pump, an emergency reversing valve and an emergency non-return valve in parallel to a high-pressure oil filter of the hydraulic control system through a three-way connection, so as to provide power for the tunnel material distribution maintenance device, realize the free switching between the main power system and the emergency power system, and the dual power sources of one for use and one for backup improve the reliability and construction efficiency of the tunnel material distribution maintenance device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a structural schematic diagram of a tunnel material distribution maintenance device.

[0022] Figure 2 The utility model is a structural schematic diagram of a tunnel material distribution maintenance device.

[0023] Figure 3 The utility model is a schematic diagram of a hydraulic control system of a tunnel material distribution maintenance device.

[0024] Figure 4 The utility model is a dual-power principle diagram of a hydraulic control system of a tunnel material distribution maintenance device.

[0025] in:

[0026] Walking platform 1, boom system 2, operating platform 3, fuel tank 4, conveying pipeline 5;

[0027] Rotating platform 21, cantilever 22, L-shaped arm 23, luffing cylinder 24, leveling cylinder 25, follower cylinder 26, hydraulic motor 27, operating basket 31, lifting mechanism 32, lifting cylinder 33, main hydraulic pump 41, solenoid reversing valve 42, check valve 43, hydraulic interlock valve 44, oil return line 45, relief valve 46, main check valve 47, high-pressure oil filter 48, emergency hydraulic pump 49, emergency reversing valve 50, emergency check valve 51;

[0028] The primary turntable 211 , the turntable arm 212 , the secondary turntable 213 , the turntable seat 214 , the base arm 221 , the telescopic cylinder 222 , and the telescopic arm 223 . DETAILED DESCRIPTION

[0029] See also Figure 1 to Figure 4 The utility model relates to a tunnel material distribution maintenance device, comprising a walking platform 1, a boom system 2 arranged on the walking platform 1, an operating platform 3 arranged on the boom system 2, and a hydraulic control system for controlling the actions of various parts; the walking platform 1 is a rail flat car or an engineering vehicle chassis, which is respectively suitable for railway tunnel construction or highway tunnel construction; a communicating conveying pipeline 5 is provided between the walking platform 1, the boom system 2 and the operating platform 3 for conveying concrete pumped by a concrete pump truck to the operating platform 3;

[0030] The arm system 2 includes a rotating platform 21 rotatably arranged on the walking platform 1, a cantilever 22 hingedly installed at the bottom on the rotating platform 21, and an L-shaped arm 23 hingedly installed at the top of the cantilever 22; the rotating platform 21 includes a primary turntable 211, a rotating arm 212, a secondary turntable 213 and a rotating seat 214; the rotating arm 212 is horizontally arranged, and one end of the rotating arm 212 is rotatably arranged on the walking platform 1 through the primary turntable 211; the rotating seat 214 is rotatably arranged at the other end of the rotating arm 212 through the secondary turntable 213, and the cantilever 22 is hingedly installed on the rotating seat 214; the two-stage rotating platforms of the rotating platform 21 are driven by corresponding hydraulic motors 27 to perform rotating movements. The cantilever 22 comprises a base arm 221, a telescopic arm 223 slidably arranged in the base arm 221, and a telescopic oil cylinder 222 is arranged in the base arm 221 to drive the telescopic arm 223 to perform a telescopic action; the L-shaped arm 23 is hingedly installed at the top of the telescopic arm 223;

[0031] A variable-length oil cylinder 24 is hingedly connected between the slewing seat 214 of the slewing platform 21 and the base arm 221 of the cantilever 22 to control the cantilever 22 to perform a pitching action; a leveling oil cylinder 25 is hingedly connected between the telescopic arm 223 of the cantilever 22 and the L-shaped arm 23 to control the L-shaped arm 23 to perform a pitching and leveling action; a follower oil cylinder 26 is also hingedly connected between the slewing platform 21 and the cantilever 22;

[0032] The operating platform 3 comprises a lifting mechanism 32 installed on the L-shaped arm 23, and an operating basket 31 set on the L-shaped arm 23 driven by a lifting cylinder 33 of the lifting mechanism 32; the lifting mechanism 32 is a scissor lift;

[0033] The rotating platform 21 is provided with a transfer pipeline and a rotary joint connecting the walking platform 1 and the concrete delivery pipeline 5 of the boom system 2. The transfer pipeline is arranged in the rotating arm 212; the rotary joints are arranged in the first-level turntable 211 and the second-level turntable 213 respectively; the concrete pump truck pumps the concrete delivered to the construction site by the concrete mixer truck into the walking platform 1, passes through the delivery pipeline 5 in the walking platform 1, enters the transfer pipeline in the rotating arm 212 through the rotary joint of the first-level turntable 211, and then enters the delivery pipeline 5 arranged on the cantilever 22 through the rotary joint in the second-level turntable 213, and then reaches the operating platform 3 to realize the tunnel laying construction. The direct delivery of concrete through the double-rotating boom structure can realize the laying range of various degrees of freedom in the narrow tunnel. The structure is simple, no manual connection pipeline is required, the operation process is simplified, the work efficiency is high, and the laying range is wide.

[0034] In view of the problems of the existing tunnel material distribution equipment, such as large and complex structure, requiring a large number of people to operate manually, complicated operation, low construction efficiency and low safety, the utility model installs a boom system 2 on the walking platform 1, and installs an operating platform 3 on the boom system 2, and the operator performs material distribution operations within the range of the operating platform 3. The boom system 2 with the walking platform 1 can transport the operating platform 3 to any material distribution position in the tunnel, without the need for manual connection of pipelines. The equipment has a simple structure, does not require complex manual operation, has good safety, and greatly improves construction efficiency. Since the tunnel material distribution device of the utility model requires people to work in the operating platform 3, the operating platform 3 is required to maintain a horizontal state at all times to ensure the safety of the operator and the construction effect. Therefore, a leveling system is installed between the operating platform 3 and the boom system 2 to facilitate the operating platform 3 to always keep it level and facilitate safe operation by the operator. However, when the existing leveling system is in the self-leveling state, due to the hysteresis of the self-leveling system during the movement of the passive oil cylinder, the oil cylinder is sucked empty, which is prone to oil leakage and hydraulic component failure. At the same time, the sliding valve structure of the multi-way valve in the oil circuit itself has a certain amount of hydraulic oil leakage. After multiple leveling operations, the leakage increases, causing the self-leveling system to fail.

[0035] The hydraulic control system comprises an oil tank 4 and a main hydraulic pump 41. Corresponding electromagnetic reversing valves 42 are respectively arranged on the pipelines connecting the main hydraulic pump 41 with the hydraulic motor 27, the luffing cylinder 24, the leveling cylinder 25 and the lifting cylinder 33; the rod chamber and the rodless chamber of the leveling cylinder 25 and the follower cylinder 26 are connected in parallel to form a self-leveling system;

[0036] When the boom 22 is driven by the variable-length cylinder 24 to perform a pitching motion, the piston rod of the follower cylinder 26 passively follows the motion, and the hydraulic oil flows in the rod chamber and rodless chamber of the leveling cylinder 25 and the follower cylinder 26, pushing the piston rod of the leveling cylinder 25 to perform corresponding pitch compensation motions to achieve automatic leveling. The leveling cylinder 25 can also be actively controlled by the electromagnetic reversing valve 42 to achieve active leveling. During the passive leveling motion of the leveling cylinder 25 and the follower cylinder 26, due to a certain lag in the self-leveling system, there will be a phenomenon of air suction, and there is a risk of oil leakage and damage to the hydraulic components; since the electromagnetic reversing valve 42 connected to the leveling cylinder 25 and the follower cylinder 26 is a sliding valve structure, it has its own leakage. After multiple operations, the leakage increases, causing the self-leveling system to fail;

[0037] The return oil pipeline 45 of the hydraulic control system is connected to the rod chamber and rodless chamber pipelines of the leveling cylinder 25 and the follower cylinder 26 through a one-way valve 43, respectively, so that the leveling cylinder 25 and the follower cylinder 26 can be replenished with oil in time when there is cavitation during the passive leveling action, so as to avoid oil leakage and hydraulic component failure; the system is replenished with oil through two one-way valves 43 to prevent oil leakage and component damage caused by cavitation. A hydraulic interlock valve 44 is provided on the pipeline connecting the leveling cylinder 25 and the follower cylinder 26 with the electromagnetic reversing valve 42 to prevent the hydraulic oil in the leveling cylinder 25 and the follower cylinder 26 from leaking through the sliding valve structure of the electromagnetic reversing valve 42; through the hydraulic interlock valve 44, due to the structure of the valve body itself, it is possible to achieve an almost zero leakage effect, thereby ensuring the effectiveness of the self-leveling system;

[0038] In order to further improve the reliability of the tunnel material distribution device, the hydraulic control system is provided with a dual power source system of a main power system and an emergency power system; the main power system comprises a main hydraulic pump 41, a relief valve 46 and a main non-return valve 47. The high-pressure oil pumped out by the main hydraulic pump 41 passes through the main non-return valve 47 and then through the high-pressure oil filter 48 to be connected to the hydraulic system pipeline of each electromagnetic reversing valve 42, so as to provide power for the operation of each part of the tunnel material distribution maintenance device; the emergency power system comprises an emergency hydraulic pump 49, an emergency reversing valve 50 and an emergency non-return valve 51; the emergency reversing valve 50 comprises a reversing valve and a relief valve; the emergency power system is connected in parallel with the main power system and then connected to the high-pressure oil filter 48 through a three-way valve to enter the hydraulic system pipeline, forming a dual system power source;

[0039] Under normal operation, the main power system provides the oil source, which enters the hydraulic system through the high-pressure oil filter 48. The emergency one-way valve 51 is used as a stop valve to prevent the main power system oil from entering the emergency oil source system. When the main power system is shut down and the emergency power system is needed to supply oil, the emergency switching valve 50 is switched to the working position, and the oil enters the hydraulic system through the high-pressure oil filter 48 through the emergency one-way valve 51. The main one-way valve 47 protects the main power system to prevent reversal. The utility model emergency power system can meet the emergency work when the main power system is shut down, and improves the reliability of the equipment and the construction efficiency.

[0040] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A tunnel material distribution maintenance device, characterized in that: The invention comprises a walking platform (1), a boom system (2) arranged on the walking platform (1), an operating platform (3) arranged on the boom system (2), and a hydraulic control system for controlling the actions of various parts; a conveying pipeline (5) is provided between the walking platform (1), the boom system (2) and the operating platform (3) for conveying concrete to the operating platform (3); The arm system (2) comprises a slewing platform (21) rotatably arranged on the walking platform (1), a cantilever (22) hingedly mounted on the slewing platform (21) at the bottom, and an L-shaped arm (23) hingedly mounted on the top of the cantilever (22); the slewing platform (21) is driven by a hydraulic motor (27) to perform a slewing motion; a variable-length oil cylinder (24) is hingedly connected between the slewing platform (21) and the cantilever (22) to control the cantilever (22) to perform a pitching motion; a leveling oil cylinder (25) is hingedly connected between the cantilever (22) and the L-shaped arm (23) to control the L-shaped arm (23) to perform a pitching motion; and a follower oil cylinder (26) is also hingedly connected between the slewing platform (21) and the cantilever (22); The operating platform (3) comprises a lifting mechanism (32) installed on the L-shaped arm (23), and an operating basket (31) installed on the L-shaped arm (23) driven to lift by a lifting cylinder (33) of the lifting mechanism (32); The hydraulic control system comprises an oil tank (4) and a main hydraulic pump (41). Corresponding electromagnetic reversing valves (42) are respectively arranged on the pipelines connecting the main hydraulic pump (41) and the hydraulic motor (27), the boom cylinder (24), the leveling cylinder (25), and the lifting cylinder (33); the rod chamber and the rodless chamber of the leveling cylinder (25) and the follower cylinder (26) are connected in parallel, and the rod chamber and the rodless chamber pipelines of the leveling cylinder (25) and the follower cylinder (26) are respectively connected to the return oil pipeline (45) of the hydraulic control system through a one-way valve (43) to replenish oil to the leveling cylinder (25) and the follower cylinder (26); a hydraulic interlocking valve (44) is arranged on the pipeline connecting the leveling cylinder (25) and the follower cylinder (26) and the electromagnetic reversing valve (42) to prevent the hydraulic oil in the leveling cylinder (25) and the follower cylinder (26) from leaking through the electromagnetic reversing valve (42).

2. The tunnel material distribution maintenance device according to claim 1, characterized in that: The walking platform (1) is a rail flat car or an engineering vehicle chassis, which is respectively suitable for railway tunnel construction or highway tunnel construction.

3. The tunnel material distribution maintenance device according to claim 1, characterized in that: The rotating platform (21) comprises a primary rotating platform (211), a rotating arm (212), a secondary rotating platform (213) and a rotating seat (214); the rotating arm (212) is arranged horizontally, and one end of the rotating arm (212) is rotatably arranged on the walking platform (1) through the primary rotating platform (211); the rotating seat (214) is rotatably arranged on the other end of the rotating arm (212) through the secondary rotating platform (213), and the arm support system (2) is hingedly mounted on the rotating seat (214).

4. The tunnel material distribution maintenance device according to claim 3 is characterized in that: The rotating platform (21) is provided with a transfer pipeline and a rotating joint connecting the walking platform (1) and the concrete conveying pipeline (5) of the boom system (2).

5. The tunnel material distribution maintenance device according to claim 1, characterized in that: The cantilever (22) comprises a base arm (221), and a telescopic arm (223) which is slidably arranged in the base arm (221) and driven by a telescopic oil cylinder (222) in the base arm (221) to perform a telescopic action.

6. The tunnel material distribution maintenance device according to claim 1, characterized in that: The hydraulic control system is provided with a main power system, comprising a main hydraulic pump (41), a relief valve (46) and a main check valve (47); the high-pressure oil pumped out by the main hydraulic pump (41) passes through the main check valve (47), passes through a high-pressure oil filter (48), and then is connected to each electromagnetic reversing valve (42), thereby providing power for the operation of each part of the tunnel material distribution maintenance device.

7. The tunnel material distribution maintenance device according to claim 6, characterized in that: The hydraulic control system is provided with an emergency power system, comprising an emergency hydraulic pump (49), an emergency reversing valve (50) and an emergency non-return valve (51), which is connected in parallel with the main power system and then connected to a high-pressure oil filter (48) as an emergency power source.

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