Action mechanism and hydraulic system of pipe aligning vehicle
By optimizing the pipe truck's movement mechanism and hydraulic system, the problems of low construction efficiency and poor safety in traditional pipe hoisting methods have been solved, achieving efficient and safe pipe docking and movement.
Patent Information
- Application Number
- CN202510993768.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2025-10-28
AI Technical Summary
Traditional pipeline hoisting methods suffer from problems such as interference from the crossbeams above the foundation pit, inability of cranes to hoist, damage to the sockets by cross braces, friction damage to the outer wall of the pipeline, and threats to worker safety, resulting in low pipeline construction efficiency and poor safety.
The system employs a pipe-connecting trolley's actuation mechanism and hydraulic system, including longitudinal, lateral, and lifting mechanisms, and is equipped with solenoid valves, dual one-way throttle shut-off valves, and synchronization valves to achieve precise movement and docking of pipelines. A hand pump is used for millimeter-level fine-tuning to ensure the load maintenance and stability of the hydraulic cylinders.
It improves the efficiency and safety of pipeline construction, reduces damage to the socket and pipe wall and wear on the outer wall, reduces the threat to workers' personal safety, and achieves high-precision pipeline connection.
Smart Images
Figure CN120845596A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pipeline construction equipment, and more specifically to an action mechanism and hydraulic system for a pipeline truck. Background Technology
[0002] Currently, water pipelines with a diameter of two meters or more in China are mostly installed using cranes due to their large size and weight (up to tens of tons). Furthermore, larger diameter pipelines require deeper foundation pits, with corrugated steel plates erected on both sides and crossbeams placed every few meters to prevent pit collapse during construction. During construction, cranes use slings to lift the pipelines and then lower them into the pit. However, this traditional pipeline installation method has significant limitations and the following problems: 1. Due to interference from the crossbeam above the foundation pit, the pipeline could not be hoisted to the installation position in one go. Workers had to repeatedly disassemble and reassemble the hoisting straps to move the pipeline within the foundation pit.
[0003] 2. During construction, if there are high-voltage lines above the foundation pit, the crane cannot lift the equipment.
[0004] 3. When connecting the spigot and socket, two chain hoists are needed to connect a cross brace. The cross brace holds the spigot and socket at one end of the pipe. The chain hoists are used to pull the pipe to connect and fix it. However, the cross brace can easily damage the spigot and socket of the pipe.
[0005] 4. When using a hoist to pull the pipe, the lateral force on the sockets of the two pipes cannot be eliminated, which will cause damage to the sockets. In addition, when the pipe is pulled, the friction between the outer wall of the pipe and the ground will also cause damage to the outer wall of the pipe.
[0006] 5. When workers use chain hoists to pull pipes inside pipelines, the pulling force of the chain hoist can reach tens of tons for pipes with larger diameters, which also poses a great threat to the personal safety of workers.
[0007] To this end, the applicant has developed a pipe-aligning vehicle for pipeline construction to improve the efficiency and safety of pipeline construction. The key components of the pipe-aligning vehicle are the moving mechanism and the hydraulic system. The moving mechanism is used to drive the pipeline, and the hydraulic system is used to provide driving force for the moving mechanism. Summary of the Invention
[0008] The purpose of this invention is to provide an action mechanism and hydraulic system for a pipe-operated vehicle.
[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A mechanism for operating a tube carriage includes a longitudinal movement mechanism, a transverse movement mechanism, and a lifting mechanism; The longitudinal movement mechanism includes a longitudinal movement cylinder 29 and a longitudinal movement frame 291. The longitudinal movement frame 291 is slidably mounted on a longitudinal movement guide rail 292. The longitudinal movement guide rail 292 is mounted on the frame 290 of the pipe-aligning vehicle. The movable end of the longitudinal movement cylinder 29 is connected to the longitudinal movement frame 291 and is used to drive the longitudinal movement frame 291 to move longitudinally along the longitudinal movement guide rail 291. Two sets of transverse movement mechanisms are distributed front and rear on the longitudinal movement frame, namely the front transverse movement mechanism and the rear transverse movement mechanism; The front lateral movement mechanism includes a front lateral movement cylinder 16 and a front lateral movement frame 161. A front lateral movement guide rail 162 is provided on the longitudinal movement frame 291. The front lateral movement frame 161 is slidably mounted on the front lateral movement guide rail 162. The movable end of the front lateral movement cylinder 16 is connected to the front lateral movement frame 161 and is used to drive the front lateral movement frame 161 to move laterally along the front lateral movement guide rail 162. The rear lateral movement mechanism includes a rear lateral movement cylinder 17 and a rear lateral movement frame 171. A rear lateral movement guide rail 172 is provided on the longitudinal movement frame 291. The rear lateral movement frame 171 is slidably mounted on the rear lateral movement guide rail 172. The movable end of the rear lateral movement cylinder 17 is connected to the rear lateral movement frame 171 and is used to drive the rear lateral movement frame 171 to move laterally along the rear lateral movement guide rail 172. The lifting mechanism is divided into a front lifting mechanism installed on the front transverse frame and a rear lifting mechanism installed on the rear transverse frame; The front lifting mechanism includes a front lifting cylinder 7 and a front lifting frame 71. A front lifting guide rail 72 is provided on the front transverse frame 161. The front lifting frame 71 is slidably mounted on the front lifting guide rail 72. The movable end of the front lifting cylinder 7 is connected to the front lifting frame 71 and is used to drive the front lifting frame 71 to move up and down along the front lifting guide rail 72. The rear lifting mechanism includes a rear lifting cylinder 10 and a rear lifting frame 101. A rear lateral frame 171 is provided with a rear lifting guide rail 102. The rear lifting frame 101 is slidably mounted on the rear lifting guide rail 102. The movable end of the rear lifting cylinder 10 is connected to the rear lifting frame 101 and is used to drive the rear lifting frame 101 to move up and down along the rear lifting guide rail 102.
[0010] Furthermore, the front lifting frame 71 and the rear lifting mechanism 101 are respectively equipped with jacking pipe assemblies that cooperate with the pipeline.
[0011] The present invention also discloses a hydraulic system for a pipeline trolley, used to provide driving force for the actuation mechanism of the pipeline trolley, including a first solenoid valve 31, a first double one-way throttle shut-off valve 5 and a first balance valve 6 installed on the control oil circuit of the front lifting cylinder 7. When the 2DT on the first solenoid valve 31 is energized, the front lifting cylinder 7 extends; when the 1DT on the first solenoid valve 31 is energized, the front lifting cylinder 7 retracts; the double one-way throttle shut-off valve 5 is used to adjust the extension and retraction speed of the front lifting cylinder 7; the first balance valve 6 enables the front lifting cylinder 7 to maintain the load. Includes a second solenoid valve 30, a second double one-way throttle shut-off valve 8 and a second balance valve 9 installed on the control oil circuit of the rear lifting cylinder 10. When the 4DT on the second solenoid valve 30 is energized, the rear lifting cylinder 10 extends; when the 3DT on the second solenoid valve 30 is energized, the rear lifting cylinder 10 retracts; the second double one-way throttle shut-off valve 8 is used to adjust the extension and retraction speed of the rear lifting cylinder 10; the second balance valve 9 enables the rear lifting cylinder 10 to maintain the load. When the 4DT on the second solenoid valve 30 and the 2DT on the first solenoid valve 31 are energized at the same time, the front lifting cylinder 7 and the rear lifting cylinder 10 extend in conjunction; when the 3DT on the second solenoid valve 30 and the 1DT on the first solenoid valve 31 are energized at the same time, the front lifting cylinder 7 and the rear lifting cylinder 10 retract in conjunction. The system includes a synchronizing valve 13 installed on the control oil lines of the front lateral movement cylinder 16 and the rear lateral movement cylinder 17. A first check valve 14 and a second check valve 15 are respectively installed between the synchronizing valve 13 and the front lateral movement cylinder 16 and the rear lateral movement cylinder 17. The system also includes a third solenoid valve 11, a third double one-way throttle valve 12, a fourth solenoid valve 20, a fourth double one-way throttle valve 19, a fourth hydraulically controlled check valve 18, a fifth solenoid valve 23, a fifth double one-way throttle valve 22 and a fifth hydraulically controlled check valve 21 installed on the control oil lines of the front lateral movement cylinder 16 and the rear lateral movement cylinder 17. The system also includes a sixth solenoid valve 24 connected to the fourth hydraulically controlled check valve 18 and a seventh solenoid valve 25 connected to the fifth hydraulically controlled check valve 21. When the 6DT on the third solenoid valve 11 is energized, the hydraulic oil flows through the synchronization valve 13, the first check valve 14 and the second check valve 15, and the front lateral cylinder 16 and the rear lateral cylinder 17 can extend synchronously; the third double one-way throttle valve 12 is used to adjust the synchronous extension speed of the front lateral cylinder 16 and the rear lateral cylinder 17. When the 8DT on the fourth solenoid valve 20 and the 13DT on the seventh solenoid valve 25 are energized, the fourth hydraulic check valve 18 opens, and the front lateral movement cylinder 16 can be finely extended; when the 7DT on the fourth solenoid valve 20 and the 13DT on the seventh solenoid valve 25 are energized, the fourth hydraulic check valve 18 opens, and the front lateral movement cylinder 16 can be finely retracted; the fourth double one-way throttle shut-off valve 19 is used to adjust the extension and retraction speed of the front lateral movement cylinder 16. When the 10DT on the fifth solenoid valve 23 and the 14DT on the sixth solenoid valve 24 are energized, the fifth hydraulic control check valve 21 opens, and the rear transverse cylinder 17 can be finely extended; when the 9DT on the fifth solenoid valve 23 and the 14DT on the sixth solenoid valve 24 are energized, the fifth hydraulic control check valve 21 opens, and the rear transverse cylinder 17 can be finely retracted; the fifth double one-way throttle shut-off valve 22 is used to adjust the extension and retraction speed of the rear transverse cylinder 17; When the 5DT on the third solenoid valve 11, the 7DT on the fourth solenoid valve 20, the 9DT on the fifth solenoid valve 23, the 14DT on the sixth solenoid valve 24, and the 13DT on the seventh solenoid valve 25 are energized at the same time, the front transverse cylinder 16 and the rear transverse cylinder 17 retract quickly. When 13DT on the seventh solenoid valve 25 is energized, the fourth hydraulic check valve 18 opens, and the front lateral movement cylinder 16 can float; when 14DT on the sixth solenoid valve 24 is energized, the fifth hydraulic check valve 21 opens, and the rear lateral movement cylinder 17 can float; when 14DT on the sixth solenoid valve 24 and 13DT on the seventh solenoid valve 25 are energized simultaneously, the fourth hydraulic check valve 18 and the fifth hydraulic check valve 21 open simultaneously, and both the front lateral movement cylinder 16 and the rear lateral movement cylinder 17 can float. This includes an eighth solenoid valve 26, an eighth double one-way throttle shut-off valve 27, and an eighth balance valve 28 installed in the control oil circuit of the longitudinal movement cylinder 29. When 12DT on the eighth solenoid valve 26 is energized, the longitudinal cylinder 29 extends; when 11DT on the eighth solenoid valve 26 is energized, the longitudinal cylinder 29 retracts; the eighth double one-way throttle shut-off valve 27 is used to adjust the extension and retraction speed of the longitudinal cylinder 29, and the eighth balance valve 28 enables the longitudinal cylinder 29 to maintain the load; when the longitudinal cylinder 29 extends or retracts, the front transverse cylinder 16 and the rear transverse cylinder 17 activate the floating function as needed.
[0012] Furthermore, the rodless chamber of the front lifting cylinder 7 is connected to the hand pump 2 via a first branch, and a first shut-off valve 4 is provided on the first branch; the rodless chamber of the rear lifting cylinder 10 is connected to the hand pump 2 via a second branch, and a second shut-off valve 3 is provided on the second branch; the hand pump 2 is connected to the oil tank 1. The hand pump 2 draws oil through the oil tank 1. The oil passes through the second shut-off valve 3 and the first shut-off valve 4 and enters the rodless chambers of the front lifting cylinder 7 and the rear lifting cylinder 10 respectively, so that the hand pump 2 can make fine adjustments to the front lifting cylinder 7 and the rear lifting cylinder 10. The second shut-off valve 3 and the first shut-off valve 4 enable the hand pump 2 to perform coordinated fine-tuning or individual fine-tuning of the front lifting cylinder 7 and the rear lifting cylinder 10.
[0013] Furthermore, the hand pump 2 connects the rodless chamber of the front lifting cylinder 7 and the rear lifting cylinder 10 with a damping joint, enabling the hand pump 2 to perform millimeter-level fine adjustments to the front lifting cylinder 7 and the rear lifting cylinder 10.
[0014] The beneficial effects of this invention are: 1. The longitudinal movement mechanism of the present invention is installed on the pipe alignment vehicle, the transverse movement mechanism is above the longitudinal movement mechanism, and the lifting mechanism is above the transverse movement mechanism; when the longitudinal movement mechanism moves longitudinally, the transverse movement mechanism and the lifting mechanism move accordingly; the transverse movement mechanism moves left and right on the longitudinal movement mechanism, and the lifting mechanism moves accordingly at this time; the entire longitudinal movement mechanism extends into the inside of the pipe, and the inner wall of the pipe is lifted by the lifting mechanism to perform pipe alignment.
[0015] 2. The front and rear lifting cylinders are equipped with a balance valve and a double one-way throttle shut-off valve. The balance valve can ensure that the cylinder is leak-free and maintains the load, while the double one-way throttle shut-off valve can adjust the extension and retraction speed of the cylinder.
[0016] 3. The front and rear lifting cylinders are equipped with hand pumps. The hand pumps are connected to the cylinders through damping joints. The hand pumps can be used to make millimeter-level fine adjustments to the extension of the front and rear lifting cylinders. A shut-off valve is provided between the hand pumps and the cylinders, so that the front and rear lifting cylinders can be adjusted together or individually.
[0017] 4. The front and rear lateral movement cylinders are equipped with a synchronizing valve and a double one-way throttle shut-off valve. The synchronizing valve can realize the synchronous extension of the front and rear lateral movement cylinders, and the double one-way throttle shut-off valve can adjust the extension and retraction speed of the cylinders.
[0018] There is a check valve between the synchronizing valve and the front and rear lateral movement cylinders. When the front and rear lateral movement cylinders perform asynchronous extension actions, the check valve can prevent hydraulic oil from flowing through the synchronizing valve, thereby preventing the stability of the front and rear lateral movement cylinders from being affected when they move independently.
[0019] 5. Adding solenoid valve assemblies to the front and rear transverse cylinders allows for individual fine-tuning of extension and retraction, as well as rapid retraction. The front and rear transverse cylinders have a floating (follow-up) function. During pipe alignment, the longitudinal movement of the pipe may generate lateral forces between the two pipe sockets. The floating (follow-up) function of the front and rear cylinders can reduce the lateral forces on the pipe, thereby improving the alignment accuracy and avoiding damage to the sockets. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the action mechanism in this invention; Figure 2 This is a schematic diagram of the hydraulic system in this invention.
[0021] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
[0023] Example 1: like Figure 1 As shown, this embodiment provides an action mechanism for a pipe-aligning vehicle, including a longitudinal movement mechanism, a transverse movement mechanism, and a lifting mechanism. The longitudinal movement mechanism is mounted on the frame of the pipe-aligning vehicle, the transverse movement mechanism is above the longitudinal movement mechanism, and the lifting mechanism is above the transverse movement mechanism.
[0024] The following is a detailed description of the structure of the longitudinal movement mechanism, the transverse movement mechanism, and the lifting mechanism.
[0025] The longitudinal movement mechanism includes a longitudinal movement cylinder 29 and a longitudinal movement frame 291. The longitudinal movement frame 291 is slidably mounted on a longitudinal movement guide rail 292, which is mounted on the frame 290 of the pipe-laying vehicle. The movable end of the longitudinal movement cylinder 29 is connected to the longitudinal movement frame 291. The longitudinal movement frame 291 is driven to move longitudinally along the longitudinal movement guide rail 291 by the extension and retraction of the longitudinal movement cylinder 29.
[0026] Two sets of transverse movement mechanisms are distributed on the longitudinal movement frame, namely the front transverse movement mechanism and the rear transverse movement mechanism.
[0027] The front lateral movement mechanism includes a front lateral movement cylinder 16 and a front lateral movement frame 161. A front lateral movement guide rail 162 is provided on the longitudinal movement frame 291. The front lateral movement frame 161 is slidably mounted on the front lateral movement guide rail 162. The movable end of the front lateral movement cylinder 16 is connected to the front lateral movement frame 161. The front lateral movement frame 161 is driven to move laterally along the front lateral movement guide rail 162 by the extension and retraction of the front lateral movement cylinder 16.
[0028] The rear lateral movement mechanism includes a rear lateral movement cylinder 17 and a rear lateral movement frame 171. A rear lateral movement guide rail 172 is provided on the longitudinal movement frame 291. The rear lateral movement frame 171 is slidably mounted on the rear lateral movement guide rail 172. The movable end of the rear lateral movement cylinder 17 is connected to the rear lateral movement frame 171. The extension and retraction of the rear lateral movement cylinder 17 drives the rear lateral movement frame 171 to move laterally along the rear lateral movement guide rail 172.
[0029] The lifting mechanism is divided into a front lifting mechanism installed on the front transverse frame and a rear lifting mechanism installed on the rear transverse frame.
[0030] The front lifting mechanism includes a front lifting cylinder 7 and a front lifting frame 71. A front lifting guide rail 72 is provided on the front transverse frame 161. The front lifting frame 71 is slidably mounted on the front lifting guide rail 72. The movable end of the front lifting cylinder 7 is connected to the front lifting frame 71. The front lifting frame 71 moves up and down along the front lifting guide rail 72 by the extension and retraction of the front lifting cylinder 7.
[0031] The rear lifting mechanism includes a rear lifting cylinder 10 and a rear lifting frame 101. A rear lateral moving frame 171 is provided with a rear lifting guide rail 102. The rear lifting frame 101 is slidably mounted on the rear lifting guide rail 102. The movable end of the rear lifting cylinder 10 is connected to the rear lifting frame 101. The extension and retraction of the rear lifting cylinder 10 drives the rear lifting frame 101 to move up and down along the rear lifting guide rail 102.
[0032] Meanwhile, the front jacking frame 71 and the rear jacking mechanism 101 are respectively equipped with jacking pipe assemblies 103 that cooperate with the pipeline.
[0033] During operation, when the longitudinal movement mechanism moves longitudinally, the transverse movement mechanism and the lifting mechanism follow suit; the transverse movement mechanism moves left and right on top of the longitudinal movement mechanism, and the lifting mechanism follows suit; the entire longitudinal movement mechanism extends into the pipe and uses the lifting mechanism to lift the inner wall of the pipe for alignment.
[0034] Example 2: This embodiment also discloses a hydraulic system for a pipe-pairing vehicle, used to provide driving force for the actuation mechanism of the pipe-pairing vehicle in Embodiment 1.
[0035] The hydraulic system includes a first solenoid valve 31, a first double one-way throttle shut-off valve 5, and a first balance valve 6 installed on the control oil circuit of the front lifting cylinder 7.
[0036] When 2DT on the first solenoid valve 31 is energized, the front lifting cylinder 7 extends; when 1DT on the first solenoid valve 31 is energized, the front lifting cylinder 7 retracts. The dual one-way throttle valve 5 can adjust the extension and retraction speed of the front lifting cylinder 7. The first balance valve 6 on the front lifting cylinder 7 enables the front lifting cylinder 7 to maintain its load.
[0037] The hydraulic system also includes a second solenoid valve 30, a second double one-way throttle shut-off valve 8, and a second balance valve 9 installed on the control oil circuit of the rear lifting cylinder 10.
[0038] When 4DT on the second solenoid valve 30 is energized, the rear lifting cylinder 10 extends; when 3DT on the second solenoid valve 30 is energized, the rear lifting cylinder 10 retracts. The second double one-way throttle shut-off valve 8 can adjust the extension and retraction speed of the rear lifting cylinder 10. The second balance valve 9 on the rear lifting cylinder 10 enables the rear lifting cylinder 10 to maintain its load.
[0039] When the 4DT on the second solenoid valve 30 and the 2DT on the first solenoid valve 31 are energized simultaneously, the front lifting cylinder 7 and the rear lifting cylinder 10 extend in conjunction; when the 3DT on the second solenoid valve 30 and the 1DT on the first solenoid valve 31 are energized simultaneously, the front lifting cylinder 7 and the rear lifting cylinder 10 retract in conjunction.
[0040] The rodless chamber of the front lifting cylinder 7 is connected to the hand pump 2 via a first branch, and a first shut-off valve 4 is provided on the first branch; the rodless chamber of the rear lifting cylinder 10 is connected to the hand pump 2 via a second branch, and a second shut-off valve 3 is provided on the second branch; the hand pump 2 is connected to the oil tank 1.
[0041] The hand pump 2 draws oil from the oil tank 1. The oil passes through the second shut-off valve 3 and the first shut-off valve 4, and then enters the rodless chambers of the front lifting cylinder 7 and the rear lifting cylinder 10, respectively. Furthermore, the hand pump 2 connects the front lifting cylinder 7 and the rodless chambers of the rear lifting cylinder 10 via a damping joint (damping hole), enabling the hand pump 2 to perform millimeter-level fine adjustments to the front lifting cylinder 7 and the rear lifting cylinder 10, thereby improving pipe alignment accuracy.
[0042] The second shut-off valve 3 and the first shut-off valve 4 enable the hand pump 2 to perform coordinated fine-tuning or individual fine-tuning of the front lifting cylinder 7 and the rear lifting cylinder 10.
[0043] The hydraulic system also includes a synchronizing valve 13 installed on the control oil lines of the front lateral cylinder 16 and the rear lateral cylinder 17. A first check valve 14 and a second check valve 15 are respectively installed between the synchronizing valve 13 and the front lateral cylinder 16 and the rear lateral cylinder 17. The system also includes a third solenoid valve 11, a third double one-way throttle valve 12, a fourth solenoid valve 20, a fourth double one-way throttle valve 19, a fourth hydraulically controlled check valve 18, a fifth solenoid valve 23, a fifth double one-way throttle valve 22 and a fifth hydraulically controlled check valve 21 installed on the control oil lines of the front lateral cylinder 16 and the rear lateral cylinder 17, a sixth solenoid valve 24 connected to the fourth hydraulically controlled check valve 18, and a seventh solenoid valve 25 connected to the fifth hydraulically controlled check valve 21.
[0044] Synchronization valve 13 enables the synchronous extension of front lateral movement cylinder 16 and rear lateral movement cylinder 17. There is a first check valve 14 and a second check valve 15 between synchronization valve 13 and front lateral movement cylinder 16 and rear lateral movement cylinder 17. When the front and rear lateral movement cylinders perform asynchronous extension actions, the check valve can prevent hydraulic oil from flowing through the synchronization valve, thereby preventing the stability of the front and rear lateral movement cylinders from being affected when they move individually.
[0045] Specifically, the front lateral movement cylinder 16 and the rear lateral movement cylinder 17 include the following operating modes: When the 6DT on the third solenoid valve 11 is energized, hydraulic oil flows through the synchronization valve 13, the first check valve 14, and the second check valve 15, allowing the front lateral cylinder 16 and the rear lateral cylinder 17 to extend synchronously. The third double one-way throttle valve 12 can adjust the synchronous extension speed of the front lateral cylinder 16 and the rear lateral cylinder 17.
[0046] When the 8DT on the fourth solenoid valve 20 and the 13DT on the seventh solenoid valve 25 are energized, the fourth hydraulic control check valve 18 opens, and the front lateral movement cylinder 16 can be finely extended; when the 7DT on the fourth solenoid valve 20 and the 13DT on the seventh solenoid valve 25 are energized, the fourth hydraulic control check valve 18 opens, and the front lateral movement cylinder 16 can be finely retracted; the fourth double one-way throttling shut-off valve 19 can adjust the extension and retraction speed of the front lateral movement cylinder 16.
[0047] When the 10DT on the fifth solenoid valve 23 and the 14DT on the sixth solenoid valve 24 are energized, the fifth hydraulic control check valve 21 opens, and the rear transverse cylinder 17 can be finely extended; when the 9DT on the fifth solenoid valve 23 and the 14DT on the sixth solenoid valve 24 are energized, the fifth hydraulic control check valve 21 opens, and the rear transverse cylinder 17 can be finely retracted; the fifth double one-way throttling valve 22 can adjust the extension and retraction speed of the rear transverse cylinder 17.
[0048] When the 5DT on the third solenoid valve 11, the 7DT on the fourth solenoid valve 20, the 9DT on the fifth solenoid valve 23, the 14DT on the sixth solenoid valve 24, and the 13DT on the seventh solenoid valve 25 are simultaneously energized, the front transverse cylinder 16 and the rear transverse cylinder 17 retract rapidly.
[0049] When 13DT on the seventh solenoid valve 25 is energized, the fourth hydraulic check valve 18 opens, and the front lateral movement cylinder 16 can float; when 14DT on the sixth solenoid valve 24 is energized, the fifth hydraulic check valve 21 opens, and the rear lateral movement cylinder 17 can float; when 14DT on the sixth solenoid valve 24 and 13DT on the seventh solenoid valve 25 are energized simultaneously, the fourth hydraulic check valve 18 and the fifth hydraulic check valve 21 open simultaneously, and both the front lateral movement cylinder 16 and the rear lateral movement cylinder 17 can float.
[0050] The hydraulic system also includes an eighth solenoid valve 26, an eighth double one-way throttle shut-off valve 27, and an eighth balance valve 28, which are installed on the control oil circuit of the longitudinal cylinder 29.
[0051] When 12DT on the eighth solenoid valve 26 is energized, the longitudinal cylinder 29 extends; when 11DT on the eighth solenoid valve 26 is energized, the longitudinal cylinder 29 retracts; the eighth double one-way throttling valve 27 can adjust the extension and retraction speed of the longitudinal cylinder 29. The eighth balancing valve 28 enables the longitudinal cylinder 29 to maintain the load and achieve the pressure holding function.
[0052] When the longitudinal movement cylinder 29 extends or retracts, the front transverse movement cylinder 16 and the rear transverse movement cylinder 17 can activate the floating function as needed.
[0053] The above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.
[0054] If the terms "first" or "second" are used in this document to define components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing the invention and simplifying the description, and unless otherwise stated, the above terms have no special meaning.
[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0056] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
Claims
1. A mechanism for operating a pipe cart, characterized in that, Includes longitudinal movement mechanism, lateral movement mechanism and lifting mechanism; The longitudinal movement mechanism includes a longitudinal movement cylinder (29) and a longitudinal movement frame (291). The longitudinal movement frame (291) is slidably mounted on the longitudinal movement guide rail (292). The longitudinal movement guide rail (292) is mounted on the frame (290) of the pipe-pairing vehicle. The movable end of the longitudinal movement cylinder (29) is connected to the longitudinal movement frame (291) and is used to drive the longitudinal movement frame (291) to move longitudinally along the longitudinal movement guide rail (291). Two sets of transverse movement mechanisms are distributed front and rear on the longitudinal movement frame, namely the front transverse movement mechanism and the rear transverse movement mechanism; The front lateral movement mechanism includes a front lateral movement cylinder (16) and a front lateral movement frame (161). A front lateral movement guide rail (162) is provided on the longitudinal movement frame (291). The front lateral movement frame (161) is slidably mounted on the front lateral movement guide rail (162). The movable end of the front lateral movement cylinder (16) is connected to the front lateral movement frame (161) and is used to drive the front lateral movement frame (161) to move laterally along the front lateral movement guide rail (162). The rear transverse mechanism includes a rear transverse cylinder (17) and a rear transverse frame (171). The longitudinal frame (291) is provided with a rear transverse guide rail (172). The rear transverse frame (171) is slidably mounted on the rear transverse guide rail (172). The movable end of the rear transverse cylinder (17) is connected to the rear transverse frame (171) and is used to drive the rear transverse frame (171) to move laterally along the rear transverse guide rail (172). The lifting mechanism is divided into a front lifting mechanism installed on the front transverse frame and a rear lifting mechanism installed on the rear transverse frame; The front lifting mechanism includes a front lifting cylinder (7) and a front lifting frame (71). A front lifting guide rail (72) is provided on the front transverse frame (161). The front lifting frame (71) is slidably mounted on the front lifting guide rail (72). The movable end of the front lifting cylinder (7) is connected to the front lifting frame (71) and is used to drive the front lifting frame (71) to move up and down along the front lifting guide rail (72). The rear lifting mechanism includes a rear lifting cylinder (10) and a rear lifting frame (101). The rear lateral frame (171) is provided with a rear lifting guide rail (102). The rear lifting frame (101) is slidably mounted on the rear lifting guide rail (102). The movable end of the rear lifting cylinder (10) is connected to the rear lifting frame (101) and is used to drive the rear lifting frame (101) to move up and down along the rear lifting guide rail (102).
2. The actuation mechanism of the pipe-connecting vehicle according to claim 1, characterized in that, The front lifting frame (71) and the rear lifting mechanism (101) are respectively equipped with pipe jacking assemblies that cooperate with the pipeline.
3. A hydraulic system for a pipe-connecting vehicle, used to provide driving force for the actuation mechanism of the pipe-connecting vehicle according to any one of claims 1-2, characterized in that, Includes a first solenoid valve (31), a first double one-way throttle shut-off valve (5), and a first balance valve (6) installed on the control oil circuit of the front lifting cylinder (7). When the 2DT on the first solenoid valve (31) is energized, the front lifting cylinder (7) extends; when the 1DT on the first solenoid valve (31) is energized, the front lifting cylinder (7) retracts; the double one-way throttle shut-off valve (5) is used to adjust the extension and retraction speed of the front lifting cylinder (7); the first balance valve (6) enables the front lifting cylinder (7) to maintain the load; Includes a second solenoid valve (30), a second double one-way throttle shut-off valve (8), and a second balance valve (9) installed on the control oil circuit of the rear lifting cylinder (10); When the 4DT on the second solenoid valve (30) is energized, the rear lifting cylinder (10) extends; when the 3DT on the second solenoid valve (30) is energized, the rear lifting cylinder (10) retracts; the second double one-way throttle shut-off valve (8) is used to adjust the extension and retraction speed of the rear lifting cylinder (10); the second balance valve (9) enables the rear lifting cylinder (10) to maintain the load; When the 4DT on the second solenoid valve (30) and the 2DT on the first solenoid valve (31) are energized at the same time, the front lifting cylinder (7) and the rear lifting cylinder (10) extend in linkage; when the 3DT on the second solenoid valve (30) and the 1DT on the first solenoid valve (31) are energized at the same time, the front lifting cylinder (7) and the rear lifting cylinder (10) retract in linkage. The system includes a synchronizing valve (13) installed on the control oil lines of the front lateral cylinder (16) and the rear lateral cylinder (17), and a first check valve (14) and a second check valve (15) respectively installed between the synchronizing valve (13) and the front lateral cylinder (16) and the rear lateral cylinder (17). It also includes a third solenoid valve (11), a third double one-way throttle valve (12), a fourth solenoid valve (20), a fourth double one-way throttle valve (19), a fourth hydraulic control check valve (18), a fifth solenoid valve (23), a fifth double one-way throttle valve (22) and a fifth hydraulic control check valve (21) installed on the control oil lines of the front lateral cylinder (16) and the rear lateral cylinder (17), a sixth solenoid valve (24) connected to the fourth hydraulic control check valve (18), and a seventh solenoid valve (25) connected to the fifth hydraulic control check valve (21). When the 6DT on the third solenoid valve (11) is energized, the hydraulic oil flows through the synchronization valve (13), the first check valve (14), and the second check valve (15), and the front lateral cylinder (16) and the rear lateral cylinder (17) can extend synchronously; the third double one-way throttle shut-off valve (12) is used to adjust the synchronous extension speed of the front lateral cylinder (16) and the rear lateral cylinder (17); When the 8DT on the fourth solenoid valve (20) and the 13DT on the seventh solenoid valve (25) are energized, the fourth hydraulic check valve (18) opens, and the front lateral cylinder (16) can be finely extended; when the 7DT on the fourth solenoid valve (20) and the 13DT on the seventh solenoid valve (25) are energized, the fourth hydraulic check valve (18) opens, and the front lateral cylinder (16) can be finely retracted; the fourth double one-way throttle shut-off valve (19) is used to adjust the extension and retraction speed of the front lateral cylinder (16); When the 10DT on the fifth solenoid valve (23) and the 14DT on the sixth solenoid valve (24) are energized, the fifth hydraulic check valve (21) opens, and the rear transverse cylinder (17) can be finely extended; when the 9DT on the fifth solenoid valve (23) and the 14DT on the sixth solenoid valve (24) are energized, the fifth hydraulic check valve (21) opens, and the rear transverse cylinder (17) can be finely retracted; the fifth double one-way throttle shut-off valve (22) is used to adjust the extension and retraction speed of the rear transverse cylinder (17); When the 5DT on the third solenoid valve (11), the 7DT on the fourth solenoid valve (20), the 9DT on the fifth solenoid valve (23), the 14DT on the sixth solenoid valve (24), and the 13DT on the seventh solenoid valve (25) are energized at the same time, the front transverse cylinder (16) and the rear transverse cylinder (17) retract quickly. When the 13DT on the seventh solenoid valve (25) is energized, the fourth hydraulic check valve (18) opens, and the front transverse cylinder (16) can float; when the 14DT on the sixth solenoid valve (24) is energized, the fifth hydraulic check valve (21) opens, and the rear transverse cylinder (17) can float; when the 14DT on the sixth solenoid valve (24) and the 13DT on the seventh solenoid valve (25) are energized at the same time, the fourth hydraulic check valve (18) and the fifth hydraulic check valve (21) open at the same time, and both the front transverse cylinder (16) and the rear transverse cylinder (17) can float. This includes an eighth solenoid valve (26), an eighth double one-way throttle shut-off valve (27), and an eighth balance valve (28) installed in the control oil circuit of the longitudinal movement cylinder (29). When the 12DT on the eighth solenoid valve (26) is energized, the longitudinal cylinder (29) extends; when the 11DT on the eighth solenoid valve (26) is energized, the longitudinal cylinder (29) retracts; the eighth double one-way throttle shut-off valve (27) is used to adjust the extension and retraction speed of the longitudinal cylinder (29), and the eighth balance valve (28) enables the longitudinal cylinder (29) to maintain the load; when the longitudinal cylinder (29) extends or retracts, the front transverse cylinder (16) and the rear transverse cylinder (17) activate the floating function as needed.
4. The hydraulic system of the pipe-connecting vehicle according to claim 3, characterized in that, The rodless chamber of the front lifting cylinder (7) is connected to the hand pump (2) through the first branch, and the first branch is provided with a first shut-off valve (4); the rodless chamber of the rear lifting cylinder (10) is connected to the hand pump (2) through the second branch, and the second branch is provided with a second shut-off valve (3); the hand pump (2) is connected to the oil tank (1); The hand pump (2) draws oil through the oil tank (1). The oil passes through the second shut-off valve (3) and the first shut-off valve (4) and enters the rodless chamber of the front lifting cylinder (7) and the rear lifting cylinder (10) respectively, so that the hand pump (2) can make fine adjustments to the front lifting cylinder (7) and the rear lifting cylinder (10). The second shut-off valve (3) and the first shut-off valve (4) enable the hand pump (2) to perform linkage fine-tuning or individual fine-tuning of the front lifting cylinder (7) and the rear lifting cylinder (10).
5. The hydraulic system of the pipe-connecting vehicle according to claim 4, characterized in that, The hand pump (2) connects the rodless chamber of the front lifting cylinder (7) and the rear lifting cylinder (10) with a damping joint, enabling the hand pump (2) to make millimeter-level fine adjustments to the front lifting cylinder (7) and the rear lifting cylinder (10).