A multifunctional stepless adjustable road manhole cover replacement device

Abstract

The present invention discloses a multifunctional stepless adjustable road manhole cover replacement device for urban road manhole cover replacement operations, comprising a mobile frame, a gripping mechanism, a loosening and lifting mechanism, and an end-release mechanism. The mobile frame is used to move the manhole cover migration device; the gripping mechanism includes a hook rope, which is connected to the manhole cover by passing through a pulley arranged at the bottom of the mobile frame. The ratchet is rotated by a handle to tighten the rope and the manhole cover, thereby gripping the manhole cover; the loosening and lifting mechanism includes a driving motor and an adjusting motor. The driving motor drives a rotating disk and a transmission shaft to achieve vertical reciprocating lifting, thereby driving the gripping mechanism to reciprocate and lift; the adjusting motor drives a ball screw slider mechanism to adjust the horizontal connection position of the transmission shaft, thereby changing the amplitude of the reciprocating lifting, and can achieve multifunctional stepless adjustment of high-frequency low-amplitude loosening and low-frequency high-amplitude lifting of the manhole cover; the end-release mechanism is used to lock, fix, and release the manhole cover after it is lifted. The present invention has a simple structure, a high degree of automation, and a multi-mode stepless adjustment function for loosening and lifting. It has the advantages of low energy consumption, high efficiency, and more labor-saving replacement and migration of road manhole covers.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal engineering devices, and in particular to a multi-mode stepless adjustable road manhole cover replacement device. Background Art

[0002] In the field of municipal engineering, manhole covers are widely used in infrastructure scenarios such as municipal roads, residential areas, and airports. Generally, underground pipelines require renovation, maintenance, and manhole cover replacement, which requires the extraction, relocation, and replacement of manhole covers. However, manhole covers are not only heavy, but also repeatedly crushed by vehicles and pedestrians on the road, causing the covers to fit tightly against the manholes and become glued to the surrounding roads. The manhole cover relocation process requires a lot of manual effort and time, resulting in low relocation efficiency, damage to surrounding roads, and economic losses.

[0003] At present, for the extraction, relocation and replacement of manhole covers, it is generally necessary to move the manhole cover away from the wellhead and temporarily relocate the manhole cover. The traditional method is to use a crowbar and manpower to manually lift the manhole cover, or a manhole cover prying device that combines manpower and equipment, or an automated manhole cover relocation device. The former two require a lot of manual effort and time, and have low work efficiency, low degree of automation, and high operating costs; the latter mostly uses a motor-driven gear transmission structure to extract and relocate manhole covers, which can effectively complete the manhole cover replacement and relocation tasks, but the manhole cover extraction movement process is relatively simple. In order to solve the problem of adhesion between the road and the manhole cover caused by repeated rolling of the manhole cover, the power required for manhole cover extraction is extremely large, the energy consumption is high, and there will be impact during the extraction process, which will damage the manhole cover and the road around the manhole cover, causing economic losses.

[0004] In response to the above shortcomings, it is necessary to invent a new type of manhole cover extraction and relocation device to solve the problems of difficulty in extracting manhole covers and large impact caused by the adhesion of manhole covers to the road surface, improve the efficiency, safety and economy of manhole cover replacement, and reduce the energy consumption of the device. Summary of the Invention

[0005] This invention discloses a multifunctional, infinitely adjustable manhole cover replacement device, featuring two innovative operating modes: loosening and lifting. The loosening mode features high-frequency, low-amplitude motion. This high-frequency reciprocating motion loosens the manhole cover, effectively resolving adhesion and impact issues between the manhole cover and the surrounding road. Furthermore, the synergistic effect of the drive motor and the regulating motor ensures that the drive motor always operates in its high-efficiency range, improving efficiency while reducing energy consumption.

[0006] The embodiment of the present application is a multi-mode stepless adjustable road manhole cover replacement device, characterized by comprising: a moving frame, a gripping mechanism, a loosening lifting mechanism, and an end-placement mechanism;

[0007] The movable frame is arranged at the bottom of the manhole cover replacement device, and the movable frame is used for moving the manhole cover after it is lifted;

[0008] The gripping mechanism is provided at both ends of the loosening lifting mechanism and is used to grip the manhole cover;

[0009] The end release mechanism is provided at both ends of the mobile frame and is used for locking, fixing and releasing the manhole cover after it is lifted;

[0010] The loosening lifting mechanism is arranged on the mobile frame. The loosening lifting mechanism includes a driving motor and an adjusting motor. The driving motor is connected to the ball screw slider mechanism through a rotating disk and a transmission shaft. The adjusting motor is connected to the ball screw slider mechanism. The loosening lifting mechanism is used to change the working mode of the device.

[0011] Furthermore, the loosening and lifting mechanism includes a driving motor and an adjusting motor. The driving motor drives the rotating disk and the transmission shaft to realize vertical reciprocating lifting, thereby driving the gripping mechanism to lift and lower back and forth; the transmission shaft is used to connect the ball screw slider mechanism and the rotating disk; the ball screw slider mechanism is driven by the adjusting motor, and the adjusting motor drives the ball screw slider mechanism to adjust the horizontal connection position of the transmission shaft, thereby changing the amplitude of the reciprocating lifting of the gripping mechanism, which can realize high-frequency and low-amplitude loosening and low-frequency and high-amplitude lifting of the manhole cover and multifunctional stepless adjustment.

[0012] The transmission shaft is connected to the ball screw slider mechanism and the rotating disk via a ball hinge.

[0013] Furthermore, the end-release mechanism includes: a rotating baffle, a rotating shaft, a blocker and a buckle; the rotating baffle is used to hold the manhole cover, and the rotating baffle is provided with a compression spring, which plays a reset role, so that the mechanism achieves a self-locking effect; the rotating turntable is connected to the blocker through the rotating shaft; the blocker is used to prevent the rotating baffle from rotating in the opposite direction, thereby playing the role of end-release of the manhole cover, and the blocker slider is connected to the blocker fixed part through the buckle; the buckle is used to control the blocker slider to move along the vertical slide rail. When the device completes the operation and needs to lower the manhole cover, press the buckle button and the blocker slider is separated from the buckle.

[0014] Furthermore, the gripping mechanism includes a hook rope and a ratchet mechanism; the ratchet mechanism is connected to the loose lifting mechanism through a rotating shaft, and the ratchet is rotated by the handle to lock the hook rope and the manhole cover. The hook rope passes around the pulley arranged at the bottom of the mobile frame and is connected to the manhole cover.

[0015] The ratchet mechanism is provided with a pawl, which is always in contact with the ratchet teeth. When the ratchet is to rotate in the opposite direction, the pawl presses against the teeth, realizing unidirectional movement of the ratchet, thereby ensuring that the hook rope is always in a self-locking state when connected to the manhole cover.

[0016] It can be seen from the above technical solution that the embodiment of the present application has the following advantages:

[0017] 1. The innovative proposed two working modes: high-frequency low-amplitude loosening and low-frequency high-amplitude lifting and lowering. This solves the problem of difficulty in extracting manhole covers due to settlement of manhole covers and adhesion to the road. It provides new ideas and implementation methods for manhole cover extraction, effectively improving the efficiency of manhole cover removal and reducing manpower and time costs.

[0018] 2. The device uses a driving motor and an adjusting motor to work together, and is equipped with a reducer, so that the driving motor always works in the high-efficiency area in loosening and lifting modes. The use of a small-power adjusting motor can achieve stepless speed change of the device, effectively reducing energy consumption; the driving motor always keeps forward rotation during the lifting process of the manhole cover, and the operation is more stable and easier to operate.

[0019] 3. The device's high-frequency low-amplitude and low-frequency high-amplitude modes are continuously and infinitely adjustable, effectively solving the impact problem on the manhole cover during extraction. At the same time, the loosening process of the manhole cover can effectively destroy the adhesion with the surrounding roads, greatly reducing damage to the manhole cover and surrounding roads, and reducing economic losses.

[0020] 4. The ratchet and end release mechanism of the device have a self-locking function, which can avoid safety accidents caused by accidental falling of the manhole cover during manual operation and relocation, and improve the safety and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 This is a schematic structural diagram of a steplessly adjustable road manhole cover replacement device disclosed in an embodiment of the present application;

[0023] Figure 2 This is a structural diagram of a loose lifting mechanism disclosed in an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of the hinged connection between the transmission shaft and the rotating disk in a loose lifting mechanism disclosed in an embodiment of the present application;

[0025] Figure 4 A schematic structural diagram of an end holding mechanism disclosed in an embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of the position of a compression spring of an end holding mechanism disclosed in an embodiment of the present application;

[0027] Figure 6 This is a structural schematic diagram of a gripping mechanism disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. In the description of the embodiments of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "reverse", "forward", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances. The embodiments of the present application provide a multifunctional stepless adjustable road manhole cover replacement device, which can easily relocate the manhole cover, save manpower and time, and has a high degree of automation. It can reduce damage to the manhole cover and surrounding roads, reduce energy consumption, and improve work efficiency. Specifically, Figure 1 As shown:

[0029] A device for relocating a loose manhole cover comprises a mobile frame 101, a placement mechanism 102, a loosening lifting mechanism 103, and a gripping mechanism 104. The mobile frame 101 is fixed to the bottom of the device, the loosening lifting mechanism 103 is mounted on the mobile frame, the gripping mechanisms are located on both sides of the loosening lifting mechanism 103, and the placement mechanism 102 is located at both ends of the mobile frame 101. The mobile frame 101 can be understood as a structure supporting the loosening lifting mechanism 103 and the placement mechanism 102. This device for relocating a loose manhole cover can be referred to as a multifunctional, infinitely adjustable road manhole cover relocation device.

[0030] Furthermore, the multifunctional stepless adjustable road manhole cover replacement device is characterized in that the loose lifting mechanism 103, such as Figure 2As shown, it includes a base 1031, a column 1032, a slider 1033, a ball screw 1034, an adjustment motor 1038, a transmission shaft 1035, a rotating disk 1036 and a driving motor 1037. The base 1031 is set above the desktop of the mobile frame 101. The base 1031 is connected to the gripping mechanism 104 through a ratchet 1044. The gripping mechanism 104 drives the manhole cover to move vertically along the two columns 1032 to achieve the effect of lifting and lowering the manhole cover. The column 1032 is fixed to the desktop of the mobile frame 101 and serves as a movement guide rod for the chassis 1031; the slider 103 The base 1031 slides horizontally along the trapezoidal rail. The slider 1033 is connected to a ball screw 1034, which is driven by an adjustment motor 1038 to adjust the horizontal movement of the slider 1033. This horizontal movement of the slider is used to change the amplitude of the vertical movement of the gripping mechanism 104. This can be understood as the adjustment motor 1038 driving the ball screw 1034 to adjust the horizontal distance between the slider 1033 and the center point of the base 1031, thereby changing the amplitude of the vertical movement. The slider 1033 is connected to the base 1031, which drives the gripping mechanism 104. The slider 1033 is connected to the transmission shaft 1035 via a ball hinge. The drive motor 1037 drives the rotating disk 1036 to rotate. The rotating disk 1036 rotates and drives the transmission shaft 1035. The transmission shaft 1035 then drives the slider 1033 and the base 1031, thereby driving the gripping mechanism 104 to move vertically. It can be understood that the rotating disk 1036 changes the lifting and lowering frequency of the gripping mechanism 104 by changing the rotation frequency, and the adjusting motor 1038 drives the ball screw 1034 to adjust the distance between the slider 1033 and the center of the base 1031, thereby changing the vibration amplitude of the chassis 1031. When the manhole cover needs to be loosened, the driving motor 1037 drives the rotating disk 1036 at a high speed, and the adjusting motor 1038 drives the ball screw 1034 to make the slider 1033 closer to the center of the base 1031, and the vertical movement amplitude is smaller; when the manhole cover needs to be lifted or lowered, the driving motor 1037 drives the rotating disk 1036 at a low speed, and the adjusting motor 1038 drives the ball screw 1034 to make the slider 1033 farther away from the center of the base 1031, and the vertical movement amplitude becomes larger. Through the combination of the two, the effects of high frequency and low amplitude and low frequency and high amplitude can be achieved, which can greatly reduce the damage to the manhole cover and surrounding roads.

[0031] Furthermore, the multifunctional stepless adjustable road manhole cover replacement device is characterized in that the end placement device is as follows Figure 4The end-release mechanism 102 shown includes a rotating baffle 1021, a rotating shaft 1022, a blocker 1023, a buckle 1024 and a compression spring 1025. The rotating baffle 1021 is used to hold the manhole cover and can rotate around the rotating shaft 1022. A compression spring 1025 is provided between the rotating baffle 1021 and the blocker 1023. The compression spring 1025 helps the rotating baffle 1021 to reset, so that the rotating baffle 1021 is always in contact with the blocker 1023 to achieve a self-locking effect. When the manhole cover is lifted and contacts the rotating turntable 1021 under the action of the gripping mechanism 104, it can still continue to lift. At the same time, the rotating turntable 1021 is subjected to the upward force of the manhole cover and rotates forward. After the manhole cover passes through the rotating baffle 1021, the manhole cover is lowered, and the rotating baffle 1021 passes through the rotating shaft. It is connected to the blocker 1023, and the blocker 1023 is connected to the buckle 1024. The buckle 1024 is fixed to the upper end of the fixed part of the blocker 1023. The buckle 1024 is connected to the blocker 1023 by its own nesting manner, and is used to control the blocker 1023 slider to move along the vertical slide rail, so that the blocker 1023 can be used to prevent the rotating turntable 1021 from rotating counterclockwise. It can be understood that the buckle 1024 controls the blocker 1023 to slide, and then the blocker 1023 blocks the rotating turntable 1021 from rotating counterclockwise, thereby playing the role of holding the manhole cover. When the held manhole cover needs to be lowered, press the buckle 1024 button, the blocker 1023 slider is partially disengaged, and the drive motor 1037 drives the loose lifting mechanism 103 and the gripping mechanism 104 to lower the manhole cover.

[0032] Furthermore, the multifunctional stepless adjustable road manhole cover replacement device is characterized in that the gripping mechanism 104, such as Figure 5 The manual ratchet comprises a handle 1041, a pawl 1042, a self-locking pawl 1043, a ratchet 1044, and a hook rope 1045. The manual ratchet is located on both sides of the mobile frame. The manual ratchet comprises a handle 1041 and a ratchet 1044. The handle is provided with a pawl 1042. By pulling the handle 1041, the ratchet 1044 rotates, retracting and releasing the hook rope 1045. The hook rope 1045 crosses over a fixed pulley, improving stability when pulling the manhole cover. The fixed pulley is located at the bottom of the mobile frame tabletop. A self-locking pawl 1043 is located next to the ratchet 1044. When the ratchet 1044 is about to rotate in the opposite direction, the pawl 1043 presses against a tooth (in the direction of the outer circle tangent), enabling unidirectional movement of the ratchet 1044 and achieving a self-locking effect. When the hook rope 1045 is connected to the manhole cover, it remains locked.

[0033] The specific operation process is as follows: the operator pushes the mobile frame 101 to the top of the manhole cover, loosens the lifting mechanism 103, connects the gripping mechanism 104 and then connects it to the manhole cover, pulls the handle 1041, and the ratchet 1044 rotates to make the hook rope 1045 cross and connect to the manhole cover through the fixed pulley, pulls the handle 1041 to make the ratchet 1044 rotate the hook rope 1045 to tighten. When a tight relationship is formed between the hook rope 1045 and the manhole cover, the adjustment motor 1038 is started to control the ball screw 1034 to rotate, so that the slider 1033 moves horizontally to a position near the midpoint, so that the vertical movement amplitude of the slider is small to achieve a vibration effect, and starts the drive motor 1037 to make the rotating disk 1036 rotate rapidly. The rotating disk 1036 is connected to the slider 1033 through the transmission shaft 1035, the slider 1033 is connected to the base 1031, and the base 1031 is connected to the gripping mechanism 104. The gripping mechanism 104 loosens the manhole cover to achieve a high frequency and low amplitude effect. After the manhole cover is loosened, reduce the speed of the drive motor 1037 to reduce the speed of the rotating disk, operate the adjustment motor 1038 to drive the ball screw 1034, and adjust the slider 1033 to gradually move horizontally to a position farther away from the midpoint, realizing the stepless speed change function of the device, so that the vertical movement amplitude of the slider 1033 is larger to achieve a lifting effect, turn off the adjustment motor 1038, start the drive motor 1037, adjust the speed of the drive motor 1037, and reduce the speed of the rotating disk 1036, lift the manhole cover, and after passing through the rotating baffle 1021, let the manhole cover slowly descend to the rotating baffle 1021. The rotating baffle 1021 is blocked by the blocker 1023 and cannot rotate downward, thus holding the manhole cover. The drive motor 1037 is turned off, and the mobile frame 101 is pushed to the road around the manhole cover. After the work is completed, the button 1024 is pressed, the blocker 1023 is released, and the drive motor 1037 is started to drop the manhole cover. The blocker 1023 slides upward along the slide rail, and the rotating baffle 1021 is reset under the action of the compression spring 1025. When the manhole cover reaches the wellhead, the handle 1041 is pulled to rotate the ratchet 1044, canceling the tension between the hook rope 1045 and the manhole cover, and the hook rope 1045 is removed. The operator pulls the handle 1041 to retract the hook rope 1045, and all mechanisms are reset, completing the operation.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them; although the embodiments of the present application are described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and description of the embodiments of the present application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

Claims

1. A multi-mode stepless adjustable road manhole cover replacement device, characterized in that: include: Mobile frame, gripping mechanism, loosening lifting mechanism and end-placement mechanism; The loosening lifting mechanism is arranged on the mobile frame, and the loosening lifting mechanism includes a driving motor, an adjusting motor, a rotating disk, a transmission shaft, a ball screw slider mechanism, a column and a base. The driving motor is connected to the output shaft of the rotating disk, and the rotating disk is driven to rotate by the driving motor. The rotating disk is connected to the transmission shaft through a ball hinge, and the transmission shaft is connected to the slider part of the ball screw slider mechanism through a ball hinge. The transmission shaft is used to connect the rotating disk and the ball screw mechanism, and the ball screw slider mechanism is driven by the transmission shaft to enable the ball screw slider mechanism to move in the vertical direction of the column. The columns are arranged on both sides of the loosening lifting mechanism and are fixedly connected to the mobile frame as vertical guide rails of the slider mechanism to ensure its movement stability. In the ball screw slider mechanism, the slider and the ball screw are in rolling cooperation, the ball screw is connected to the adjusting motor, and the adjusting motor drives The rotation of the ball screw enables the slider to move back and forth horizontally along the ball screw on the base slide rail. The base is arranged at the bottom of the loosening lifting mechanism, which is used to connect the gripping mechanism to drive the manhole cover to move in the vertical direction. The loosening lifting mechanism changes the rotation speed of the loosening lifting mechanism by the driving motor. When the driving motor is at a high rotation speed, the lifting frequency of the loosening lifting mechanism is high. By adjusting the motor to drive the ball screw to adjust the slider close to the center point of the base, the vertical movement amplitude of the loosening lifting mechanism is reduced. The combination of the two realizes a high-frequency and low-amplitude loosening mode, which achieves the purpose of loosening the manhole cover. When the driving motor is at a low rotation speed, the lifting frequency of the loosening lifting mechanism is low. By adjusting the motor to drive the ball screw to adjust the slider away from the center point of the base, the vertical movement amplitude of the loosening lifting mechanism is increased. The combination of the two realizes a low-frequency and high-amplitude lifting mode, which achieves the purpose of lifting or lowering the manhole cover. The mobile frame is arranged at the bottom of the manhole cover replacement device, and the mobile frame is used for moving the device and migrating the manhole cover after it is lifted; The gripping mechanism is arranged at both ends of the loose lifting mechanism and is fixedly connected to the base of the loose lifting mechanism. The gripping mechanism is provided with a hook rope for gripping the manhole cover; The end release mechanism is arranged at both ends of the movable frame and is used for locking, fixing and releasing the manhole cover after it is lifted.

2. A multi-mode stepless adjustable road manhole cover replacement device according to claim 1, characterized in that: The end-release mechanism includes: a rotating baffle, a rotating shaft, a blocker and a buckle; the rotating baffle is used to hold the manhole cover, and the rotating baffle is provided with a spring; the rotating baffle is connected to the blocker through the rotating shaft; the blocker is used to prevent the rotating baffle from rotating in the opposite direction, thereby playing the role of end-release of the manhole cover, and the blocker slider is fixedly connected to the blocker through the buckle; the buckle is used to control the blocker slider to move in the vertical direction along the slide rail.

3. A multi-mode stepless adjustable road manhole cover replacement device according to claim 2, characterized in that: The spring is a compression spring, which plays a resetting role and achieves a self-locking effect.

4. The multi-mode stepless adjustable road manhole cover replacement device according to claim 1, characterized in that: The gripping mechanism includes a hook rope and a ratchet mechanism; the ratchet mechanism is connected to the loose lifting mechanism through a rotating shaft, and the ratchet is rotated by a handle to lock the hook rope and the manhole cover. The hook rope passes around the pulley arranged at the bottom of the mobile frame and is connected to the manhole cover.

5. The multi-mode stepless adjustable road manhole cover replacement device according to claim 4, characterized in that: The ratchet mechanism is provided with a pawl, which is always in contact with the ratchet teeth. When the ratchet is about to rotate in the opposite direction, the pawl is embedded in the teeth to prevent the ratchet from rotating in the opposite direction, thereby realizing unidirectional movement of the ratchet and ensuring that the hook rope is always in a self-locking state when connected to the manhole cover.

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