Tunnel pipe unloading vehicle

Abstract

A tunnel pipe unloading vehicle comprises a vehicle frame, and a pipe groove used for containing pipe joints is formed in the longitudinal direction of the vehicle frame. The driving walking and steering unit comprises a rotary assembly, a driving wheel carrier, walking wheels and a steering driving mechanism; the rotary assembly comprises a fixed part and a rotary part which are rotatably connected, the fixed part is fixed on the frame, the rotary part is fixedly connected with the driving wheel carrier through a steering crank, and the walking wheel is mounted on the driving wheel carrier and is driven by a walking driving mechanism mounted on the driving wheel carrier; one end of the steering driving mechanism is hinged to the frame, the other end of the steering driving mechanism is hinged to the steering crank, and the steering driving mechanism can linearly stretch out and draw back to drive the rotation assembly to rotate through the steering crank to achieve steering of the walking wheels; the jacking jacks are fixed at four corners of the frame and are used for jacking the frame; and the hydraulic system is arranged on the frame and used for providing hydraulic oil for the jacking jack. The pipe joint unloading device can adapt to a narrow space in a tunnel, and the mechanization degree of pipe joint unloading and pipe distribution in the tunnel is improved.

Description

Technical Field

[0001] The utility model belongs to the field of tunnel oil and gas pipeline construction equipment, and particularly relates to a tunnel pipe unloading vehicle. Background Art

[0002] At present, in the construction of pipeline welding and laying in tunnels, due to the narrow space in the tunnel for oil and gas pipelines, the construction equipment applied to land pipeline laying cannot enter the tunnel for construction, resulting in low mechanization and automation levels of tunnel pipeline construction, high construction labor intensity, low efficiency, high difficulty, and high cost. The pipeline laying construction of oil and gas in China has gradually shifted to mountainous areas and other terrains. Therefore, there are more and more pipeline welding constructions in tunnels. The current construction method requires a large number of personnel. Especially before pipeline welding construction, the unloading and pipe laying of pipelines in the tunnel are mostly completed by manpower with the assistance of simple mechanical tools. Therefore, it is very important to improve the efficiency of pipeline unloading and pipe laying in the tunnel and reduce the labor intensity to improve the efficiency of pipeline construction in the tunnel and reduce the cost. Content of the Utility Model

[0003] The purpose of the utility model is to provide a tunnel pipe unloading vehicle to adapt to the narrow space in the tunnel, improve the mechanization level of pipe joint unloading and pipe laying in the tunnel, improve the efficiency of pipeline welding preparation work in the tunnel, and reduce the labor intensity of people.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a tunnel pipe unloading vehicle, including a vehicle frame, a pipe groove for placing pipe joints is longitudinally arranged along the vehicle frame, and the pipe groove is located at the top of the vehicle frame;

[0005] A driving, walking and steering unit, including a slewing assembly, a driving wheel frame, walking wheels and a steering drive mechanism; the slewing assembly includes a fixed part and a slewing part which are rotatably connected, the fixed part is fixed on the vehicle frame, the slewing part is fixedly connected with the driving wheel frame through a steering crank, the walking wheels are installed on the driving wheel frame and are driven by a walking drive mechanism installed on the driving wheel frame; one end of the steering drive mechanism is hinged to the vehicle frame, and the other end is hinged to the steering crank. The steering drive mechanism can linearly expand and contract to drive the slewing assembly to rotate through the steering crank, so as to realize the steering of the walking wheels;

[0006] Lifting jacks, fixed at the four corners of the vehicle frame, are used to lift the vehicle frame;

[0007] A hydraulic system, arranged on the vehicle frame, is used to provide hydraulic oil for the lifting jacks.

[0008] Its beneficial effects are as follows: In the driving, traveling and steering unit of the present utility model, the traveling wheels can achieve a 90° turn, which facilitates the whole vehicle to enter the narrow space in the tunnel for operation, and can travel horizontally and longitudinally in the tunnel to transfer the position of the pipe section, and realize the unloading and laying of the pipe section; the jack is used to lift the entire vehicle frame. On the one hand, it is used to raise or lower the pipe section carried in the pipe trough to realize the unloading and laying of the pipe section. On the other hand, after the vehicle frame is lifted, the vehicle frame is supported by multiple jacks, which can improve the stability of the pipe unloading and laying process.

[0009] Further, a steering link is provided between two driving, traveling and steering units at the same end in the longitudinal direction of the vehicle frame. The two ends of the steering link are respectively hinged to the steering cranks on the two driving, traveling and steering units, and the steering link and the steering drive mechanism are respectively located on both sides of the slewing assembly.

[0010] Its beneficial effect is that the setting of the steering link can realize the synchronous turning of the two traveling wheels.

[0011] As an implementation manner, the steering drive mechanism is a steering hydraulic cylinder, and the steering hydraulic cylinder is connected to the hydraulic system.

[0012] As an implementation manner, the traveling drive mechanism is a hydraulic motor, and the hydraulic motor is fixed on the drive wheel frame and is connected to the hydraulic system.

[0013] Its beneficial effect is that the steering drive mechanism or the traveling drive mechanism adopts hydraulic drive, which can utilize the hydraulic system on the vehicle frame and reduce the component settings on the vehicle frame.

[0014] As another implementation manner, the steering drive mechanism is an electric cylinder, and the traveling drive mechanism is an electric motor.

[0015] Its beneficial effect is that the steering drive mechanism or the traveling drive mechanism adopts electric drive, and users can choose according to the actual situation, and the applicable range is wider.

[0016] The fixed part of the slewing assembly is a slewing shaft sleeve, and the slewing shaft sleeve is fixed on the vehicle frame; the rotating part of the slewing assembly is a slewing shaft, and the slewing shaft is rotatably connected in the slewing shaft sleeve through a bearing. The lower end of the slewing shaft extends out of the slewing shaft sleeve and is fixed to the steering crank on the drive wheel frame.

[0017] Its beneficial effect is that the structure of the slewing assembly is simple and compact, and is easy to implement.

[0018] A sunken installation platform is arranged in the middle of the vehicle frame, and the hydraulic system is arranged on the installation platform.

[0019] The beneficial effects are as follows: The installation platform sinks, which can avoid interference of the hydraulic system with the pipe joints in the pipe trench. At the same time, the sunken structure can lower the center of gravity of the whole vehicle, making the pipe unloading vehicle move more smoothly.

[0020] The hydraulic system includes a hydraulic valve group, a hydraulic pump, a motor, a hydraulic oil tank, and a hydraulic cooler; the hydraulic pump, the hydraulic valve group, the hydraulic oil tank, and the hydraulic cooler are connected through hydraulic pipelines, and the hydraulic pump is driven by the motor.

[0021] The beneficial effect is: To provide an arrangement method of the hydraulic system.

[0022] In the present utility model, the meanings of relevant technical terms are as follows:

[0023] Pipe laying: It means that before pipe welding, the pipe joints to be welded are successively placed along the pipeline in advance to the predetermined positions.

[0024] The beneficial effects of the present utility model are as follows: 1. The tunnel pipe unloading vehicle provided by the present utility model has a simple and compact structure. Especially in the driving, walking, and steering unit, the walking wheels can achieve a 90° turn, which is convenient for the whole vehicle to enter the narrow space of the tunnel for operation, and move horizontally and longitudinally in the tunnel to transfer the positions of the pipe joints.

[0025] 2. The tunnel pipe unloading vehicle provided by the present utility model can easily lift the pipe joints of the oil and gas pipeline by its jacking jacks, greatly reducing the labor intensity of pipe unloading and pipe laying in the tunnel.

[0026] 3. Using the pipe unloading vehicle mechanizes the preparatory work before the tunnel pipeline welding construction, improving the overall operation efficiency of the tunnel pipeline welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic diagram of the overall structure of the tunnel pipe unloading vehicle described in the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the driving, walking, and steering unit described in the present invention, where the arrow indicates the walking and turning schematic;

[0030] Figure 3 It is a partial cross-sectional view of the driving, walking, and steering unit described in the present invention;

[0031] Figure 4 Schematic diagram of the connection between the vehicle frame and the jack in the present invention;

[0032] Figure 5 Schematic diagram of the pipe unloading and pipe laying process of the tunnel pipe unloading vehicle in the present invention;

[0033] Figure 6 Schematic diagram of the tunnel pipe unloading vehicle unloading pipes from the pipe transportation equipment from the perspective of the tunnel transverse view in the present invention;

[0034] Figure 7 Schematic diagram of the tunnel pipe unloading vehicle transferring the unloaded pipe joints to the pipe laying position from the perspective of the tunnel transverse view in the present invention;

[0035] Among them, Figures 6-7 The double arrow in indicates that the tunnel pipe unloading vehicle moves horizontally during the pipe unloading process;

[0036] Markings in the figure: 1. Frame, 1-1. Pipe groove, 1-2. Installation platform, 2. Driving walking and steering unit, 2-1. Rotary assembly, 2-1a. Steering shaft, 2-1b. Bearing, 2-1c. Rotary shaft sleeve, 2-1d. Lower end cover, 2-1e. Upper end cover, 2-2. Steering crank, 2-3. Driving wheel frame, 2-4. Walking wheel, 2-5. Hydraulic motor, 2-6. Steering hydraulic cylinder, 2-7. Steering connecting rod, 2-8. Hinge seat, 2-9. Hinge joint, 3. Jack, 4. Hydraulic valve group, 5. Hydraulic pump, 6. Motor, 7. Hydraulic oil tank, 8. Hydraulic cooler, 9. Tunnel, 10. Pipe joint, 11. Pipe support pier, 12. Pipe transportation equipment. Detailed implementation manners

[0037] The following further elaborates on the present utility model in conjunction with the drawings and embodiments, but it shall not be used as a basis for any limitation on the utility model.

[0038] Embodiment 1: As Figure 1 shown, a tunnel pipe unloading vehicle includes a vehicle frame 1, a driving walking and steering unit 2, and a jack 3. The driving walking and steering unit 2 and the jack 3 are arranged on the vehicle frame 1 and are used to drive the vehicle to walk, turn, and lift.

[0039] Preferably, the vehicle frame 1 is a welded assembly. A concave pipe groove 1-1 is provided in the middle of the top of the vehicle frame 1 for placing pipe joints. A sunken installation platform 1-2 is arranged in the middle of the vehicle frame 1. Four driving walking and steering units 2 and four jacks 3 are respectively arranged at the four corners of the vehicle frame 1.

[0040] As Figure 2 , 3As shown, the driving, traveling and steering unit 2 includes a slewing assembly 2-1, a steering crank 2-2, a driving wheel carrier 2-3 and traveling wheels 2-4. The fixed part of the slewing assembly 2-1 is fixedly connected to the vehicle frame 1, and the rotating part of the slewing assembly 2-1 is connected to the driving wheel carrier 2-3; the traveling wheels 2-4 are arranged on the driving wheel carrier 2-3 and are connected to a traveling driving mechanism on the driving wheel carrier 2-3. The traveling driving mechanism in this embodiment is a hydraulic motor 2-5; the steering crank 2-2 is fixedly connected to the rotating part of the slewing assembly 2-1, and the steering crank 2-2 is also connected to a steering driving mechanism on the vehicle frame 1. The steering driving mechanism in this embodiment is a steering hydraulic cylinder 2-6. One end of the steering hydraulic cylinder 2-6 is hinged to the vehicle frame 1 through a hinge seat 2-8, and the other end is hinged to the steering crank 2-2 through a hinge joint 2-9. The telescoping of the steering hydraulic cylinder 2-6 can drive the driving wheel carrier 2-3 and the traveling wheels 2-4 to turn 90° through the steering crank 2-2.

[0041] Further, with continued reference to Figure 2 As shown, steering linkages 2-7 are respectively arranged between the two driving, traveling and steering units 2 in front of the vehicle frame 1 and between the two driving, traveling and steering units 2 behind the vehicle frame 1. Both ends of the steering linkages 2-7 are respectively hinged to the steering cranks 2-2 on the two driving, traveling and steering units 2 through hinge joints 2-9, thereby forming a four-bar linkage mechanism with the steering hydraulic cylinder 2-6 and the steering crank 2-2. When the traveling wheels 2-4 need to turn, one steering hydraulic cylinder 2-6 extends and the other steering hydraulic cylinder 2-6 contracts, thereby realizing the synchronous turning of the two traveling wheels 2-4.

[0042] Specifically, as Figure 3 shown, the slewing assembly 2-1 includes a slewing shaft 2-1a, bearings 2-1b, a slewing shaft sleeve 2-1c, a lower end cover 2-1d and an upper end cover 2-1e. Among them, the slewing shaft sleeve 2-1c is the fixed part of the slewing assembly 2-1, and the outer wall of the slewing shaft sleeve 2-1c is fixed on the vehicle frame 1. The slewing shaft 2-1a is the rotating part of the slewing assembly 2-1, and the slewing shaft 2-1a is rotatably installed in the slewing shaft sleeve 2-1c through the bearings 2-1b. The upper end cover 2-1d and the lower end cover 2-1e are respectively fixed at both ends of the slewing shaft sleeve 2-1c. The lower end of the slewing shaft 2-1a passes through the lower end cover 2-1d and is bolted to the top of the driving wheel carrier 2-3 together with the steering crank 2-2.

[0043] The jack 3 is used to lift the entire vehicle frame 1. On the one hand, it is used to raise or lower the pipe sections carried in the pipe trough 1-1 to realize the unloading and laying of the pipe sections. On the other hand, after the vehicle frame 1 is lifted, the traveling wheels 2-4 leave the ground, and the vehicle frame is supported by 4 jacks 3, which can improve the stability of the pipe unloading and laying process.

[0044] For another example Figure 1 As shown, on the installation platform 1-2 where the middle part of the vehicle frame 1 sinks, a hydraulic valve group 4, a hydraulic pump 5, a motor 6, a hydraulic oil tank 7 and a hydraulic cooler 8 are provided. The hydraulic pump 5, the hydraulic valve group 4, the hydraulic oil tank 7 and the hydraulic cooler 8 are connected through hydraulic pipelines. The hydraulic pump 5 is driven by the motor 6 to form a hydraulic system, which provides hydraulic oil for the hydraulic motor 2-5, the steering hydraulic cylinder 2-6 and the jack 3.

[0045] The working process of the tunnel pipe unloading vehicle in this embodiment is as follows: As Figure 5 、 6 、7 shows, before welding the pipes in the tunnel 9, it is necessary to first lay the pipes, that is, transport the pipe sections 10 from outside the tunnel to the inside of the tunnel 9, and use the tunnel pipe unloading vehicle 100 of the present invention to successively place the pipe sections 10 along the pipeline in advance to the predetermined positions.

[0046] The specific process is: (1) Use the pipe transportation equipment 12 to first transport the pipe section to the designated position in the tunnel 9;

[0047] (2) Operate the driving and steering unit 2 of the tunnel pipe unloading vehicle 100, move the tunnel pipe unloading vehicle 100 to one side of the pipe transportation equipment 12, between the front and rear wheels of the pipe transportation equipment 12, and parallel to the pipe section 10 on the pipe transportation equipment 12. Then control the steering hydraulic cylinder 2-6 to make the traveling wheels 2-4 rotate 90°, realizing the lateral movement of the tunnel pipe unloading vehicle 100, that is, making the traveling direction of the traveling wheels 2-4 perpendicular to the axial direction of the pipe groove 1-1 on the vehicle frame 1, so that the tunnel pipe unloading vehicle 100 travels to directly below the pipe section 10 transported by the pipe transportation equipment 12, and the pipe section 10 corresponds to the pipe groove 1-1 of the tunnel pipe unloading vehicle 100 up and down;

[0048] (3) Raise the jack 3, raise the vehicle frame 1, and after the pipe groove 1-1 holds the pipe section 10, lift the pipe section 10 upward to separate it from the pipe transportation equipment 12, and then drive the pipe transportation equipment 12 away;

[0049] (4) Retract the jack 3. After operating the tunnel pipe unloading vehicle 100 to move horizontally to the designated position, then raise the jack 3 again. Place the pipe support pier 11 at the pipe laying position manually, and then retract the jack 3 again, so that both ends of the pipe section 10 fall on the pipe support pier 11;

[0050] (5) Operate the tunnel pipe unloading vehicle 100 to move to the next working station, and repeat the above steps (1) to (4) to complete the pipe laying operation before pipeline welding.

[0051] The described pipe transport equipment 12 includes a tractor 12-1 and a rear wheel set 12-3. A front wheel set 12-2 is provided at the rear of the tractor 12-1. Both the front wheel set 12-2 and the rear wheel set 12-3 include a wheel axle and wheels rotatably mounted at both ends of the wheel axle. Support blocks for supporting the pipe section are provided on the wheel axle. When transporting the pipe section into the tunnel, the rear wheel set 12-3 is separated from the front wheel set 12-2, and both ends of the pipe section 10 are supported on the wheel axles of the front wheel set 12-2 and the rear wheel set 12-3. After the tunnel pipe unloading vehicle jacks up the pipe section 10, the tractor 12-1 drives away from the tunnel pipe unloading vehicle 100, and the rear wheel set 12-3 is manually pushed out and connected to the front wheel set 12-2 of the tractor 12-1, and the pipe transport equipment 12 drives out of the tunnel to prepare for transporting the next pipe section.

[0052] Embodiment 2: The difference between this embodiment and Embodiment 1 is that: an electric motor is used to drive the walking wheels 2-4 to replace the hydraulic motor 2-5 in Embodiment 1, and an electric cylinder is used to replace the steering hydraulic cylinder 2-6 in Embodiment 1. Other structural settings are the same as those in Embodiment 1.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Those of ordinary skill in the art should understand that the specific implementation manners of the present invention can be modified or equivalently replaced by referring to the above embodiments. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims pending for approval.

Claims

1. A tunnel pipe unloading vehicle, characterized in that: The vehicle frame comprises a pipe groove for placing pipe sections arranged along the longitudinal direction of the vehicle frame, and the pipe groove is located at the top of the vehicle frame; The driving travel and steering unit comprises a slewing assembly, a driving wheel frame, a travel wheel and a steering drive mechanism; the slewing assembly comprises a fixed part and a slewing part which are rotatably connected, the fixed part is fixed to the vehicle frame, the slewing part is fixedly connected to the driving wheel frame through a steering crank, the travel wheel is mounted on the driving wheel frame and is driven by the travel drive mechanism mounted on the driving wheel frame; one end of the steering drive mechanism is hinged to the vehicle frame, and the other end is hinged to the steering crank, the steering drive mechanism can be linearly extended and retracted to drive the slewing assembly to rotate through the steering crank to realize the steering of the travel wheel; Lifting jacks are fixed at the four corners of the frame and are used to lift the frame; The hydraulic system is arranged on the vehicle frame and is used for providing hydraulic oil to the lifting jack.

2. The tunnel pipe unloading vehicle according to claim 1, characterized in that: A steering link is also provided between the two driving travel and steering units at the same end of the frame in the longitudinal direction. The two ends of the steering link are respectively hinged to the steering cranks on the two driving travel and steering units, and the steering link and the steering drive mechanism are respectively located on both sides of the slewing assembly.

3. The tunnel pipe unloading vehicle according to claim 1, characterized in that: The steering drive mechanism is a steering hydraulic cylinder, and the steering hydraulic cylinder is connected to the hydraulic system.

4. The tunnel pipe unloading vehicle according to claim 1, characterized in that: The travel driving mechanism is a hydraulic motor, which is fixed on the driving wheel frame and connected to the hydraulic system.

5. The tunnel pipe unloading vehicle according to claim 1, characterized in that: The steering drive mechanism is an electric cylinder, and the travel drive mechanism is an electric motor.

6. The tunnel pipe unloading vehicle according to any one of claims 1 to 5, characterized in that: The fixed part of the rotating assembly is a rotating sleeve, which is fixed on the frame; the rotating part of the rotating assembly is a rotating shaft, which is rotatably connected in the rotating sleeve through a bearing, and the lower end of the rotating shaft extends out of the rotating sleeve and is fixed on the driving wheel frame together with the steering crank.

7. The tunnel pipe unloading vehicle according to claim 1, characterized in that: A sunken mounting platform is arranged in the middle of the frame, and the hydraulic system is arranged on the mounting platform.

8. The tunnel pipe unloading vehicle according to any one of claims 1 to 4 and claim 7, characterized in that: The hydraulic system comprises a hydraulic valve group, a hydraulic pump, a motor, a hydraulic oil tank and a hydraulic cooler; the hydraulic pump, the hydraulic valve group, the hydraulic oil tank and the hydraulic cooler are connected through hydraulic pipelines, and the hydraulic pump is driven by the motor.

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