Convenient and labor-saving well lid opening device

Abstract

The convenient and labor-saving well lid opening device comprises a hoisting mechanism, a moving mechanism and a control box, and the hoisting mechanism comprises a hoisting vertical beam, a connecting base hinged to one end of the hoisting vertical beam, a transverse rod installed in the connecting base in a penetrating mode and a hoisting driving assembly; the output end of the hoisting driving assembly can freely stretch out and draw back to drive the connecting base to rotate, so that the transverse rod drives the movable lifting lugs on the transverse rod to ascend or descend, and the well lid is lifted or descended. The moving mechanism comprises an electric walking wheel and a pull rod which are mounted at the other end of the hoisting vertical beam, and an operation board is arranged at the top of the pull rod and provided with a hoisting lifting switch and a walking switch; a power supply assembly and a controller are arranged in the control box, and when the device is used, automatic lifting of the well lid or forward start and stop or backward start and stop of the device can be achieved by pressing a hoisting lifting switch or a walking switch; therefore, by using the device, the well lid can be automatically lifted and conveniently driven to move in a labor-saving mode, all parts of the device can be disassembled and assembled, and the device can conveniently pass through a narrow road section.

Description

Technical Field

[0001] The present application relates to the technical field of municipal and power facility maintenance equipment, and particularly to a manhole cover opening device that is convenient to use, labor-saving, and mobile and can automatically open heavy manhole covers. Background Art

[0002] During the maintenance of municipal and power facilities, the lifting and moving of cement manhole covers mainly rely on manual or semi-mechanical equipment, such as lifting equipment. These equipment have the following defects during use:

[0003] 1. Bulky: Traditional lifting equipment is often large in size, not convenient to operate in narrow sections or spaces, which limits its scope of application;

[0004] 2. Poor flexibility: Since manhole covers come in various sizes, different-sized manhole covers require different specifications of lifting tools, which increases the complexity and usage cost of the equipment. At the same time, traditional equipment lacks flexibility in adapting to different manhole cover sizes and the operation is cumbersome;

[0005] 3. Low operation efficiency: The operation process of semi-mechanical equipment is cumbersome and inefficient. Especially in busy traffic or narrow sections, the operation time is long and it affects traffic flow;

[0006] 4. High safety risks: Operators need to frequently approach the wellhead for hoisting operations, there are safety risks such as falling and being hit by objects. In addition, traditional equipment may have problems such as insufficient stability and inaccurate control during operation, further increasing the safety risks;

[0007] 5. High cost: The use and maintenance costs of traditional lifting equipment are relatively high. And due to the poor versatility of the equipment, it is necessary to purchase various specifications of equipment to meet different needs, further increasing the cost burden.

[0008] To solve the above technical problems, Chinese Utility Model Patent CN202321673251.7 discloses a manhole cover opening device, which includes a lifting cross beam, a lifting vertical beam, and a pushing and pulling device. First rollers and second rollers are respectively arranged at both ends of the lifting cross beam. One end of the lifting vertical beam is rotatably connected to the middle of the lifting cross beam, and a third roller is arranged at the other end of the lifting vertical beam. The pushing and pulling device is arranged on the lifting vertical beam, the push rod of the pushing and pulling device is telescopic, the push rod of the pushing and pulling device is connected to the middle of the lifting cross beam. When the push rod of the pushing and pulling device extends, it drives the lifting cross beam to rotate clockwise, and when the push rod of the pushing and pulling device retracts, it drives the lifting cross beam to rotate counterclockwise until the push rod cannot be retracted. Two or more movable hooks are arranged on the lifting cross beam, and the movable hooks are respectively located on both sides of the lifting vertical beam, and the movable hooks are used to hook the manhole cover.

[0009] When the device disclosed in the above patent document is in use, the device is moved to the manhole cover to be opened and carried through the first roller, the second roller and the third roller. The movable hook is inserted into the opening hole of the manhole cover and rotated to hook the opening hole firmly. Then, the push rod of the push-pull device is extended, and the push rod drives the lifting cross beam to rotate clockwise, so as to open the hooked manhole cover. Then, the manhole cover is removed through the first roller, the second roller and the third roller. When it is necessary to remove the manhole cover, the push rod of the push-pull device is retracted, and the lifting cross beam rotates counterclockwise until the push rod cannot be retracted. At this time, the manhole cover will fall back to the ground, and then the movable hook can be taken out.

[0010] Although the manhole cover opening device disclosed in the above patent document can lift and move the manhole cover with the cooperation of the roller, the push-pull device and the movable hook, and is convenient to operate and use and can improve work efficiency. However, in the actual use process, it still has the following problems:

[0011] After the heavy manhole cover is lifted, the operator needs to move the lifted manhole cover away from above the wellhead. Since the manhole cover is very heavy, the overall mass of the device after lifting the manhole cover is very heavy. The operator needs to spend a lot of effort to push the device away, and it is easy to use brute force when the operator applies force to push, trying to push it away in one go. And the sudden strong push is easy to cause the manhole cover to shake. And once the device is pushed, if the operator fails to retract the force in time, it is easy to make the device move quickly. It is difficult for the operator to react quickly and control the device, there are certain safety hazards. Therefore, it is necessary to propose a new technical solution to solve the problems existing in the prior art. Utility Model Content

[0012] The present application provides a convenient and labor-saving manhole cover opening device to solve the problem that the existing manhole cover opening device is inconvenient to move and relatively laborious after lifting the manhole cover.

[0013] In order to achieve the above object, the present application provides the following technical solutions:

[0014] The present application provides a convenient and labor-saving manhole cover opening device, including a hoisting mechanism, a moving mechanism and a control box, wherein: The hoisting mechanism includes a hoisting vertical beam, a cross bar, a hoisting driving component and a movable lifting lug. One end of the hoisting vertical beam is rotatably connected to one end of a connecting seat. An installation through hole allowing the cross bar to pass through horizontally is formed on the connecting seat. The other end of the connecting seat is connected to the output end of the hoisting driving component. Both ends of the cross bar are detachably connected to supporting wheels. A plurality of movable lifting lugs are arranged on the cross bar and can slide along the cross bar; The moving mechanism includes an electric walking wheel and a pull rod installed at the other end of the hoisting vertical beam. An operation panel is arranged at the top of the pull rod. A hoisting lifting switch and a walking switch are arranged on the operation panel; The control box is internally provided with a power supply component, a hoisting driving controller, a moving motor controller and a moving driving motor. The output end of the moving driving motor is in transmission connection with the electric walking wheel; The hoisting driving controller is used to receive the signal output by the hoisting lifting switch and output a control signal to the hoisting driving component according to the signal, and then drive the cross bar to lift through the hoisting driving component; The moving motor controller is used to receive the electric signal output by the walking switch and output a control signal to the moving driving motor according to the electric signal, and then drive the electric walking wheel to start and stop moving forward or backward through the moving driving motor.

[0015] In the above technical solution, further, two placing frames are relatively and spacedly arranged on the hoisting vertical beam. The two placing frames are arranged along the length direction of the hoisting vertical beam. The two placing frames are located on the same side of the hoisting vertical beam. The two placing frames are used for placing the cross bar.

[0016] Furthermore, the supporting wheel includes a support frame detachably connected to the cross bar and a roller installed on the support frame. An installation position for placing the supporting wheel is formed between the cross bar placed on the placing frame and the hoisting vertical beam.

[0017] Furthermore, a walking auxiliary wheel is arranged at the bottom of the placing frame close to the connecting seat.

[0018] Further, the hoisting driving component includes a hydraulic oil tank, a hydraulic pump, a hydraulic solenoid valve and a hydraulic cylinder. The oil outlet of the hydraulic oil tank is connected to the oil inlet of the hydraulic pump through a pipeline. The oil outlet of the hydraulic pump is connected to the oil inlet of the hydraulic solenoid valve through a pipeline. The oil outlet of the hydraulic solenoid valve is connected to the oil inlet of the hydraulic cylinder. The oil outlet of the hydraulic cylinder is connected to the hydraulic oil tank. The piston rod of the hydraulic cylinder is connected to the connecting seat.

[0019] Further, the hoisting drive controller is used to receive the signals output by the hoisting lift switch and output control signals to the hydraulic pump and the hydraulic solenoid valve respectively according to the signals. The hydraulic pump is used to pump hydraulic oil under pressure according to the received control signal, and the hydraulic solenoid valve is used to adjust the oil flow direction according to the received control signal. The piston rod of the hydraulic cylinder extends outward to drive the connecting seat to rotate clockwise around the hinge point with the lifting vertical beam, thereby driving the cross bar to rise, and the manhole cover hung on the movable lifting lug rises along with the cross bar. The piston rod of the hydraulic cylinder retracts to drive the connecting seat to rotate counterclockwise around the hinge point with the lifting vertical beam, thereby driving the cross bar to descend, and the manhole cover hung on the movable lifting lug descends along with the cross bar.

[0020] Further, the hoisting drive assembly includes a hoisting drive motor and an electric push rod, and the push rod of the electric push rod is connected to the connecting seat. The hoisting drive controller is used to receive the signals output by the hoisting lift switch and output control signals to the hoisting drive motor according to the signals. The hoisting drive motor outputs control signals to the electric push rod according to the received control signals. The electric push rod extends or retracts the push rod according to the received control signals. The push rod extends outward to drive the connecting seat to rotate clockwise around the hinge point with the lifting vertical beam, thereby driving the cross bar to rise, and the manhole cover hung on the movable lifting lug rises along with the cross bar. The push rod retracts to drive the connecting seat to rotate counterclockwise around the hinge point with the lifting vertical beam, thereby driving the cross bar to descend, and the manhole cover hung on the movable lifting lug descends along with the cross bar.

[0021] Further, mounting seat holes are formed on the lifting vertical beam. The electric walking wheels are rotatably mounted in the mounting seat holes through mounting brackets. A steering motor and a steering controller are mounted on the lifting vertical beam. The power output shaft of the steering motor is in transmission connection with the electric walking wheels. A steering switch is arranged on the operation panel. The steering controller is used to receive the electrical signals output by the steering switch and output control signals to the steering motor according to the electrical signals. After receiving the control signals, the steering motor drives the electric walking wheels to turn left or right.

[0022] Further, the operation panel includes a central operation table and a left hand grip and a right hand grip oppositely arranged on both sides of the central operation table. The hoisting lift switch, the walking switch and the steering switch are all arranged on the central operation table.

[0023] Further, mounting seat holes are formed on the lifting vertical beam. The electric walking wheels are rotatably mounted in the mounting seat holes through mounting brackets. The pull rod is fixedly connected to the mounting bracket. Manually rotating the operation panel can drive the electric walking wheels to rotate synchronously to realize the steering of the electric walking wheels.

[0024] Further, mounting through holes and hanging seat holes are formed on the movable lifting lug. The movable lifting lug is adaptively sleeved with the cross bar through the mounting through holes, and the movable lifting lug is connected to the hanging nose shackle for connecting the manhole cover through the hanging seat holes.

[0025] Compared with the prior art, the present application has at least the following beneficial effects:

[0026] 1. The manhole cover opening device provided by the present application is equipped with a moving mechanism and a control box. The moving mechanism includes an electric walking wheel and a pull rod installed at the end of the lifting vertical beam. An operation panel is provided at the top of the pull rod, and a hoisting lift switch and a walking switch are provided on the operation panel. The device can be electrically driven through the settings of the walking switch, electric walking wheel, mobile motor controller, and mobile drive motor, which is convenient to move, time-saving and labor-saving, greatly reducing the burden on manual pushing of the manhole cover opening device. The operator does not need to push and pull the device with a large amount of physical strength. The walking switch on the operation panel can conveniently control the movement of the device, reducing the dependence on manual strength.

[0027] 2. In the present application, the electric walking wheel cooperates with the walking switch on the operation panel, making the movement of the device more stable and controllable. The operator can precisely control the walking switch, avoiding the device shaking and accidental displacement of the manhole cover caused by uneven force or sudden pushing, reducing the operation risk.

[0028] 3. In the present application, a hoisting lift switch is provided on the operation panel. The hoisting drive controller is respectively signal-connected to the hoisting lift switch and the hoisting drive assembly, making the process of lifting and lowering the manhole cover more automated. Controlled by the hoisting lift switch, the hoisting mechanism can accurately lift and lower the manhole cover, improving the efficiency and accuracy of the operation and reducing the time of manual operation.

[0029] 4. In the present application, the movable lifting lug can slide along the cross bar, allowing the operator to flexibly adjust the hoisting point according to the position and size of the manhole cover, which can adapt to different specifications of manhole covers faster, improving the applicability and operation speed.

[0030] 5. The present application is equipped with an electric walking wheel and two support wheels, which can provide more stable support after the manhole cover is lifted, preventing the device from having an accident due to inclination or uneven load. The setting of the support wheels also helps to maintain the stability of the device when it is not moving.

[0031] 6. The power supply component in the control box of the present application provides electrical energy for the entire device. The settings of the hoisting drive controller and the mobile motor controller in the control box improve the degree of automation of the device drive control. When in use, the operator can complete the hoisting and moving work through simple switch control, greatly improving the automation level, effectively solving the problems of inconvenient movement, laborious effort, and potential safety hazards of traditional devices after the manhole cover is lifted. The device not only improves the safety and efficiency of the operation, but also reduces the labor intensity of the operator and enhances the overall operation experience.

[0032] 7. In this application, two placement racks are arranged along the lifting vertical beam and are used to place the crossbar. Therefore, when the device moves to the working location and encounters a narrow section on the way, the support wheels and lifting lugs on the crossbar can be removed, and then the crossbar can be removed from the connecting seat. Then, the crossbar is placed on the two placement racks and aligned with the length direction of the lifting vertical beam. Support wheels can be installed on the crossbar and the lifting vertical beam. During movement, the electric driving wheels and the auxiliary walking wheels at the bottom of the placement rack cooperate to achieve stable movement of the device, and at this time, the device can smoothly pass through the narrow section. Brief Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. It should be understood that the specific shapes and structures shown in the drawings generally should not be regarded as limiting conditions when implementing the present application; for example, those skilled in the art are capable of making routine adjustments or further optimizations to the addition / removal / attribution division of certain units (components), specific shapes, positional relationships, connection methods, dimensional proportional relationships, etc. based on the technical concepts disclosed in the present application and the exemplary drawings.

[0034] Figure 1 FIG. 9 is a schematic structural diagram of the manhole cover opening device provided in the present application in a first perspective for an embodiment;

[0035] Figure 2 FIG. 13 is a schematic structural diagram of the manhole cover opening device provided in the present application in a second perspective for an embodiment;

[0036] Figure 3 For removing Figure 1 FIG. 19 is a schematic structural diagram of the remaining part after removing the housing above the electric driving wheels of the manhole cover opening device shown in another perspective.

[0037] Description of the Reference Numerals:

[0038] 1. Lifting vertical beam; 2. Crossbar; 3. Connecting seat; 4. Movable lifting lug; 5. Support wheel; 6. Placement rack; 7. Auxiliary walking wheel; 8. Hoisting drive assembly; 9. Control box; 10. Electric driving wheel; 11. Pull rod; 12. Operation panel; 13. Hoisting lifting switch; 14. Walking switch; 15. Horn button. Detailed Description of the Embodiments

[0039] The following will further describe the present application in detail through specific embodiments with reference to the drawings.

[0040] In the description of the present application: Unless otherwise specified, the meaning of "a plurality of" is two or more. Expressions such as "including", "comprising", "having" in the present application also mean "not limited to" (certain units, components, materials, steps, etc.).

[0041] Terms such as "upper", "lower", "left", "right", "middle" cited in the present application are usually for the convenience of intuitive understanding with reference to the drawings, rather than an absolute limitation on the positional relationship in the actual product. Without departing from the technical concept disclosed in the present application, changes in these relative positional relationships shall also be regarded as within the scope of the present application's description.

[0042] During the maintenance of municipal and power facilities, it is often necessary to lift and move manhole covers for inspection or replacement. However, some existing lifting devices are often bulky and difficult to pass through narrow sections or spaces. Secondly, different-sized manhole covers require different specifications of lifting tools, which increases the complexity and cost of the equipment. In addition, after the heavy manhole cover is lifted, the operator needs to move the lifted manhole cover away from above the wellhead. Since the manhole cover is very heavy, the overall mass of the device after lifting the manhole cover is very heavy, and the operator needs to spend a lot of effort to push the device away. Moreover, when the operator applies force to push, it is easy to use a sudden strong force to push it away in one go. The sudden strong push is likely to cause the manhole cover to shake, and once the device is pushed, if the operator fails to retract the force in time, it is easy for the device to move quickly, and it is difficult for the operator to react quickly and control the device, presenting certain safety hazards.

[0043] To solve the problems existing in the prior art, the present application provides a convenient and labor-saving manhole cover opening device, specifically a lifting and moving device for cement manhole covers with a modular structure design and detachable assembly. This device is convenient to pass through narrow sections and can be flexibly configured and used according to the actual size of the manhole cover. The use of this device can effectively solve the problems of lifting and moving cement manhole covers during the maintenance of municipal and power facilities, and achieve efficient, safe and flexible manhole cover maintenance operations.

[0044] A convenient and labor-saving manhole cover opening device provided by the present application mainly includes the following three functional modules: a lifting mechanism, a moving mechanism, and a control box.

[0045] See Figure 1, the hoisting mechanism mainly includes a hoisting vertical beam 1, a cross bar 2, a hoisting drive assembly 8 and movable lifting lugs 4. One end of the hoisting vertical beam 1 is rotatably connected to one end of a connecting seat 3. An installation through hole allowing the cross bar 2 to pass through horizontally is formed on the connecting seat 3. The other end of the connecting seat 3 is connected to the output end of the hoisting drive assembly 8. Both ends of the cross bar 2 are detachably connected to support wheels 5. A plurality of movable lifting lugs 4 are arranged on the cross bar 2 and can slide along the cross bar 2. Among them: the hoisting vertical beam 1 and the cross bar 2 are perpendicular to each other on the horizontal plane. The middle part of the cross bar 2 is installed in the connecting seat 3. The cross bar 2 can be disassembled from the installation through hole of the connecting seat 3, which is convenient for the device to pass through narrow sections. The connecting seat 3 is a triangular structural member. An installation through hole for installing the cross bar 2 is arranged at the first corner of the connecting seat 3. The hoisting vertical beam 1 is hinged at the second corner of the connecting seat 3. The output end of the hoisting drive assembly 8 is connected to the third corner of the connecting seat 3. The output end of the hoisting drive assembly 8 can extend or retract. When the output end of the hoisting drive assembly 8 extends, it drives the connecting seat 3 to rotate clockwise with its hinge point with the hoisting vertical beam 1 as the rotation center, thereby driving the cross bar 2 to rise. The manhole cover hung on the movable lifting lugs 4 rises along with the cross bar 2. When the output end of the hoisting drive assembly 8 retracts, it drives the connecting seat 3 to rotate counterclockwise with its hinge point with the hoisting vertical beam 1 as the rotation center, thereby driving the cross bar 2 to descend. The manhole cover hung on the movable lifting lugs 4 descends along with the cross bar 2.

[0046] The moving mechanism includes electric walking wheels 10 and a pull rod 11 installed at the other end of the hoisting vertical beam 1. An operation panel 12 is arranged at the top of the pull rod 11. A hoisting lifting switch 13 and a walking switch 14 are arranged on the operation panel 12.

[0047] A power supply assembly, a hoisting drive controller, a moving motor controller and a moving drive motor are arranged in the control box 9. The output end of the moving drive motor is in transmission connection with the electric walking wheels 10. The hoisting drive controller is used to receive the signal output by the hoisting lifting switch 13 and output a control signal to the hoisting drive assembly 8 according to the signal, and then drive the cross bar 2 to lift through the hoisting drive assembly 8. The moving motor controller is used to receive the electrical signal output by the walking switch 14 and output a control signal to the moving drive motor according to the electrical signal, and then drive the electric walking wheels 10 to start or stop moving forward or backward through the moving drive motor.

[0048] Therefore, in this application, the hoisting and lowering of the manhole cover is realized through the hoisting mechanism, and the electric drive movement of the device is realized through the moving mechanism. When moving the device with the manhole cover, it saves time and effort, reduces the dependence on manual labor, and has higher operation safety.

[0049] In a preferred embodiment of this application, such as Figure 1 、 2, on the above-mentioned lifting vertical beam 1, two placing frames 6 are relatively and spacedly arranged. The two placing frames 6 are arranged along the length direction of the lifting vertical beam 1. The two placing frames 6 are located on the same side of the lifting vertical beam 1. The two placing frames 6 are used to place the cross bar 2; the supporting wheel 5 includes a supporting frame detachably connected to the cross bar 2 and a roller installed on the supporting frame. One end of the supporting frame is provided with an installation through hole that is adapted to be sleeved with the cross bar 2. An installation position for placing the supporting wheel 5 is formed between the cross bar 2 placed on the placing frame 6 and the lifting vertical beam 1; a walking auxiliary wheel 7 is provided at the bottom of the placing frame 6 close to the connecting seat 3.

[0050] Through the above structural design, when the device moves to the working site and encounters a narrow section on the way, the supporting wheel 5 and the lifting lug on the cross bar 2 can be removed, then the cross bar 2 can be removed from the connecting seat 3, and then the cross bar 2 is placed on the two placing frames 6 to be consistent with the length direction of the lifting vertical beam 1. The supporting wheel 5 can be installed on the cross bar 2 and the lifting vertical beam 1. During movement, the electric walking wheel 10 and the walking auxiliary wheel 7 at the bottom of the placing frame 6 cooperate to realize the stable movement of the device. At this time, the device can smoothly pass through the narrow section.

[0051] In addition, the supporting wheel 5 is detachably connected to the cross bar 2 through the supporting frame, making the installation and replacement of the supporting wheel 5 more convenient. This design simplifies the maintenance process. The operator can quickly replace or adjust the supporting wheel 5, reducing the maintenance time and complexity; a walking auxiliary wheel 7 is provided at the bottom of the placing frame 6 close to the connecting seat 3, ensuring the stable movement performance of the device after the supporting wheel 5 is removed and increasing the load-bearing capacity of the device.

[0052] In order to ensure that the placing frame 6 can reliably hold the cross bar 2, a fixed card slot can be provided on the placing frame 6 to hold the cross bar 2 in the card slot to prevent it from falling during the movement process.

[0053] In a preferred embodiment of the present application, an installation through hole and a hanging seat hole are formed on the movable lifting lug 4. The movable lifting lug 4 is adaptively sleeved with the cross bar 2 through the installation through hole and can slide left and right along the cross bar 2. The movable lifting lug 4 is connected to a lifting tool (such as a hanging nose shackle for connecting a manhole cover) through the hanging seat hole. The movable lifting lug 4 in the present application is mainly used to connect the manhole cover. The lifting tool can be custom-selected according to the shape and size of the manhole cover, as long as it can firmly grasp the manhole cover and prevent it from slipping. Therefore, the present application allows the operator to flexibly adjust the lifting point according to the position and size of the manhole cover, enabling the device to adapt to different specifications of manhole covers faster, improving the applicability and operation speed.

[0054] In a preferred embodiment of the present application, the hoisting drive assembly 8 in the hoisting mechanism mainly includes a hydraulic oil tank, a hydraulic pump, a hydraulic solenoid valve, and a hydraulic cylinder. The oil outlet of the hydraulic oil tank is connected to the oil inlet of the hydraulic pump through a pipeline, the oil outlet of the hydraulic pump is connected to the oil inlet of the hydraulic solenoid valve through a pipeline, the oil outlet of the hydraulic solenoid valve is connected to the oil inlet of the hydraulic cylinder, the oil outlet of the hydraulic cylinder is connected to the hydraulic oil tank, and the piston rod of the hydraulic cylinder is connected to the connecting seat 3. During use, when the hoisting lifting switch 13 is pressed, the hoisting drive controller can receive the signal output by the hoisting lifting switch 13 and output control signals to the hydraulic pump and the hydraulic solenoid valve respectively according to the signal. The hydraulic pump can pump hydraulic oil under pressure according to the received control signal, and the hydraulic solenoid valve can adjust the oil flow direction according to the received control signal; the piston rod in the hydraulic cylinder extends and retracts under the action of the hydraulic oil. When the piston rod of the hydraulic cylinder extends, it can drive the connecting seat 3 to rotate clockwise around its hinge point with the hoisting vertical beam 1, thereby driving the cross bar 2 mounted thereon to rise, and the manhole cover hung on the movable lifting lug 4 rises along with the cross bar 2; when the piston rod of the hydraulic cylinder retracts, it can drive the connecting seat 3 to rotate counterclockwise around its hinge point with the hoisting vertical beam 1, thereby driving the cross bar 2 to descend, and the manhole cover hung on the movable lifting lug 4 descends along with the cross bar 2.

[0055] In another preferred embodiment of the present application, the hoisting drive assembly 8 in the hoisting mechanism mainly includes a hoisting drive motor and an electric push rod, and the push rod of the electric push rod is connected to the connecting seat 3. During use, when the hoisting lifting switch 13 is pressed, the hoisting drive controller can receive the signal output by the hoisting lifting switch 13 and output a control signal to the hoisting drive motor according to the signal. The hoisting drive motor outputs a control signal to the electric push rod according to the received control signal, and the electric push rod extends or retracts the push rod according to the received control signal. When the push rod extends, it can drive the connecting seat 3 to rotate clockwise around its hinge point with the hoisting vertical beam 1, thereby driving the cross bar 2 to rise, and the manhole cover hung on the movable lifting lug 4 rises along with the cross bar 2; when the push rod retracts, it can drive the connecting seat 3 to rotate counterclockwise around its hinge point with the hoisting vertical beam 1, thereby driving the cross bar 2 to descend, and the manhole cover hung on the movable lifting lug 4 descends along with the cross bar 2.

[0056] Therefore, the hoisting drive assembly 8 in the present application mainly realizes the telescopic function, and is mainly composed of a hydraulic cylinder and a hydraulic pump, or an electric push rod and a hoisting drive motor, etc. The hydraulic cylinder can drive the up and down movement of the cross bar 2 and the movable lifting lug 4 through the telescopic movement of the piston rod, thereby realizing the lifting and lowering of the manhole cover, and realizing the rapid lifting and lowering of the manhole cover through automatic control, reducing the manual operation link and improving the operation efficiency.

[0057] In a preferred embodiment of the present application, as Figure 3, the operation panel 12 includes a central operation table, a left hand grip and a right hand grip oppositely arranged on both sides of the central operation table. The hoisting and lifting switch 13, the traveling switch 14 and the steering switch are all arranged on the central operation table. In actual production and application, the specific setting positions of the hoisting and lifting switch 13, the traveling switch 14 and the steering switch on the operation panel can be customized as long as it is convenient for the operator to use and conforms to the operation habit.

[0058] In a preferred embodiment of the present application, a horn button 15 and / or an emergency stop button can also be added to the operation panel 12. When it is necessary to give a warning reminder to the outside world, the operator can press the horn button 15. When it is necessary to perform an emergency brake on the device, the emergency stop button can be pressed.

[0059] Mounting seat holes are formed on the lifting vertical beam 1. The electric traveling wheels 10 are rotationally mounted in the mounting seat holes through mounting brackets. A steering motor and a steering controller are mounted on the lifting vertical beam 1. The power output shaft of the steering motor is in transmission connection with the electric traveling wheels 10. For example, the power output shaft of the steering motor is in transmission connection with the electric traveling wheels 10 through conventional steering gears, steering link transmission mechanisms, etc. in mechanical transmission.

[0060] After pressing the steering switch, the steering controller can receive the electrical signal output by the steering switch and output a control signal to the steering motor according to the electrical signal. After receiving the control signal, the steering motor drives the electric traveling wheels 10 to turn left or right.

[0061] Press the traveling switch 14, and the mobile motor controller can receive the electrical signal output by the traveling switch 14 and output a control signal to the mobile drive motor according to the electrical signal, and then drive the electric traveling wheels 10 to start and stop forward or backward and stop through the mobile drive motor. In the present application, the power output shaft of the mobile drive motor can be in transmission connection with the electric traveling wheels 10 through conventional speed reducers, transmission devices, etc. in mechanical transmission.

[0062] In the present application, the hoisting drive controller, the mobile motor controller, the steering controller, etc. in the control box 9 can use a microprocessor or a PLC programmable logic controller in the prior art.

[0063] In another preferred embodiment of the present application, mounting seat holes are formed on the lifting vertical beam 1. The electric traveling wheels 10 are rotationally mounted in the mounting seat holes through mounting brackets. The pull rod 11 is fixedly connected to the mounting bracket. Manually rotating the operation panel 12 can drive the electric traveling wheels 10 to rotate synchronously, realizing the steering of the electric traveling wheels 10. In this embodiment, the transmission connection relationship between the electric traveling wheels 10 and the pull rod 11 in the present application is similar to the front handle and the front wheel of an electric vehicle. Manually rotating the operation panel 12 can drive the electric traveling wheels 10 to turn left and right.

[0064] The electric driving wheels in this application usually adopt wear-resistant and anti-slip tires or crawlers to ensure stability and grip on different road surfaces.

[0065] The power supply component in this application provides electrical energy for the entire device. It can be powered by batteries or an external power supply, ensuring that the device can operate normally even in an environment without mains power supply, and is more energy-saving and environmentally friendly.

[0066] In summary, the manhole cover opening device provided by this application has at least the following advantages:

[0067] 1. The manhole cover opening device provided by this application adopts a modular and detachable design. Each component can be independently disassembled and assembled, facilitating transportation, storage, and flexible configuration and replacement according to actual needs. The modular design also facilitates subsequent maintenance and upgrading. When a component is damaged or needs to be updated, it can be replaced individually without replacing the entire device.

[0068] 2. The manhole cover opening device provided by this application has efficient moving capabilities. Through electric driving wheels, walking auxiliary wheels, etc., the device can drive stably on different road surfaces and in complex environments. And the operator can achieve forward, backward, turning and other actions by pressing a switch, reducing the labor intensity of personnel and improving the operation efficiency.

[0069] 3. The manhole cover opening device provided by this application has a compact structure design, which is convenient for carrying and storing. And the connection between components is firm and reliable, ensuring the stability and durability of the device during long-term use. Safety mechanisms such as a pressure relief device and overload protection can also be added to this device to ensure that the operation can be stopped quickly in case of an abnormal situation and prevent accidents from occurring.

[0070] 4. This device integrates a moving mechanism, a lifting mechanism, and a control system, achieving a high degree of integration and automatic control. The automation degree of the device is improved through control components such as a microprocessor or a PLC, enabling the device to automatically complete operations such as lifting, moving, and lowering the manhole cover. This greatly reduces the complexity and labor intensity of manual operations. At the same time, the automatic control also improves the operation accuracy and stability, ensuring the quality of manhole cover maintenance.

[0071] 5. The movable lifting lug in this device can move on the cross bar, so the movable lifting lug can adapt to manhole cover opening holes of different sizes. This design enables the device to flexibly handle various types of manhole covers without the need to replace equipment of different specifications, improving the utilization rate of the equipment and economic benefits.

[0072] 6. This device is powered by batteries or an external power supply, which is more energy-saving and environmentally friendly than traditional fuel equipment. It can also reduce the operation cost and maintenance cost of the equipment, improving economic benefits.

[0073] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written out should also be considered to be within the scope described in this specification.

[0074] In the foregoing, the present application has been described in a relatively specific and detailed manner through general descriptions and specific embodiments. It should be understood that based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; but as long as they do not depart from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A convenient and labor-saving manhole cover opening device, characterized in that: It includes a lifting mechanism, a moving mechanism and a control box, wherein: the lifting mechanism includes a lifting vertical beam, a cross bar, a lifting drive assembly and a movable lifting lug, one end of the lifting vertical beam is rotatably connected to one end of a connecting seat, a mounting through hole is formed on the connecting seat to allow the cross bar to be horizontally passed through, the other end of the connecting seat is connected to the output end of the lifting drive assembly, the two ends of the cross bar are respectively detachably connected to the support wheels, and a plurality of movable lifting lugs are passed through the cross bar and can slide along the cross bar; The moving mechanism comprises an electric travel wheel and a pull rod installed at the other end of the lifting vertical beam, an operating panel is arranged on the top of the pull rod, and a lifting switch and a travel switch are arranged on the operating panel; A power supply component, a hoisting drive controller, a mobile motor controller and a mobile drive motor are arranged in the control box, and the output end of the mobile drive motor is connected to the electric walking wheel in a transmission manner; the hoisting drive controller is used to receive the signal output by the hoisting lifting switch and output a control signal to the hoisting drive component according to the signal, thereby driving the cross bar to be lifted and lowered through the hoisting drive component; the mobile motor controller is used to receive the electrical signal output by the walking switch and output a control signal to the mobile drive motor according to the electrical signal, thereby driving the electric walking wheel to start and stop forward or start and stop backward through the mobile drive motor.

2. The convenient and labor-saving manhole cover opening device according to claim 1 is characterized in that: Two placing racks are arranged on the lifting vertical beam at a relative interval, the two placing racks are arranged along the length direction of the lifting vertical beam, the two placing racks are located on the same side of the lifting vertical beam, and the two placing racks are used to place the crossbar; The support wheel comprises a support frame detachably connected to the cross bar and a roller mounted on the support frame, and a mounting position for placing the support wheel is formed between the cross bar mounted on the placement frame and the lifting vertical beam; A walking auxiliary wheel is arranged at the bottom of the placement frame close to the connecting seat.

3. The convenient and labor-saving manhole cover opening device according to claim 1 is characterized in that: The hoisting drive assembly includes a hydraulic oil tank, a hydraulic pump, a hydraulic solenoid valve and a hydraulic cylinder, the oil outlet of the hydraulic oil tank is connected to the oil inlet pipeline of the hydraulic pump, the oil outlet of the hydraulic pump is connected to the oil inlet pipeline of the hydraulic solenoid valve, the oil outlet of the hydraulic solenoid valve is connected to the oil inlet of the hydraulic cylinder, the oil outlet of the hydraulic cylinder is connected to the hydraulic oil tank, and the piston rod of the hydraulic cylinder is connected to the connecting seat; The hoisting drive controller is used to receive the signal output by the hoisting lifting switch and output control signals to the hydraulic pump and the hydraulic solenoid valve respectively according to the signal. The hydraulic pump is used to pump hydraulic oil according to the pressure of the received control signal, and the hydraulic solenoid valve is used to adjust the oil flow direction according to the received control signal; the piston rod of the hydraulic cylinder extends outward to drive the connecting seat to rotate clockwise with its hinge point with the lifting vertical beam as the rotation center, thereby driving the cross bar to rise, and the manhole cover hung on the movable lifting ear rises together with the cross bar; the piston rod of the hydraulic cylinder retracts to drive the connecting seat to rotate counterclockwise with its hinge point with the lifting vertical beam as the rotation center, thereby driving the cross bar to descend, and the manhole cover hung on the movable lifting ear descends together with the cross bar.

4. The convenient and labor-saving manhole cover opening device according to claim 1 is characterized in that: The hoisting drive assembly comprises a hoisting drive motor and an electric push rod, wherein the push rod of the electric push rod is connected to the connecting seat; The hoisting drive controller is used to receive the signal output by the hoisting lifting switch and output a control signal to the hoisting drive motor according to the signal. The hoisting drive motor outputs a control signal to the electric push rod according to the received control signal. The electric push rod extends or retracts the push rod according to the received control signal. The push rod extends to drive the connecting seat to rotate clockwise with the hinge point between it and the lifting vertical beam as the rotation center, thereby driving the cross bar to rise, and the manhole cover hung on the movable lifting ear rises together with the cross bar; the push rod retracts to drive the connecting seat to rotate counterclockwise with the hinge point between it and the lifting vertical beam as the rotation center, thereby driving the cross bar to descend, and the manhole cover hung on the movable lifting ear descends together with the cross bar.

5. The convenient and labor-saving manhole cover opening device according to claim 1 is characterized in that: A mounting seat hole is formed on the lifting vertical beam, and the electric travel wheel is rotatably installed in the mounting seat hole through a mounting bracket. A steering motor and a steering controller are installed on the lifting vertical beam, and a power output shaft of the steering motor is transmission-connected to the electric travel wheel. A steering switch is provided on the operating panel, and the steering controller is used for receiving an electrical signal output by the steering switch and outputting a control signal to the steering motor according to the electrical signal. After receiving the control signal, the steering motor drives the electric travel wheel to turn left or right.

6. The convenient and labor-saving manhole cover opening device according to claim 5 is characterized in that: The operating panel comprises a central operating platform and a left-hand grip and a right-hand grip which are relatively arranged on both sides of the central operating platform. The hoisting and lifting switch, the travel switch and the steering switch are all arranged on the central operating platform.

7. The convenient and labor-saving manhole cover opening device according to claim 1 is characterized in that: A mounting seat hole is formed on the lifting vertical beam, and the electric walking wheel is rotatably installed in the mounting seat hole through a mounting bracket. The pull rod is fixedly connected to the mounting bracket, and manual rotation of the operating disk can drive the electric walking wheel to rotate synchronously, thereby realizing steering of the electric walking wheel.

8. The convenient and labor-saving manhole cover opening device according to claim 1 is characterized in that: A mounting through hole and a hanging seat hole are formed on the movable lifting ear. The movable lifting ear is adapted to be matched with the cross bar through the mounting through hole. The movable lifting ear is connected to a hanging nose shackle for connecting the manhole cover through the hanging seat hole.

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