Hoisting device for cement row laying

Abstract

The invention relates to the technical field of ocean engineering, in particular to a hoisting device for cement row laying, which comprises a fixed frame, a movable frame, a driving unit and a release mechanism, a plurality of hoisting parts are arranged on the fixed frame, and positioning beacon supports are arranged in the middles of the front side and the rear side of the fixed frame; the movable frame is located above the fixed frame and is in guide fit with the fixed frame in the left-right direction. A plurality of groups of releasing mechanisms which are arranged at intervals in the left-right direction are arranged on the front side and the rear side between the movable frame and the fixed frame, each releasing mechanism comprises a releasing part and a releasing rod which are arranged in the movable frame and the fixed frame respectively, at least two releasing gaps which are separated from each other are formed in each releasing part, and the releasing rods are matched with the releasing parts in an inserted connection mode; the driving unit is installed on the fixed frame and is in transmission connection with the movable frame, and in the moving process of the movable frame, cement is arranged in a row mode when the release rods are pulled out of the corresponding release gaps. According to the invention, stable and accurate laying of the cement row can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of marine engineering, and in particular to a hoisting device for placing cement in rows. Background Art

[0002] Cement row structures are prefabricated linear structures made from high-strength cement. They are typically constructed from multiple regular or irregularly shaped cement blocks connected in series via steel strands, rebar, and other connectors, arranged in rows. A key feature of these structures is their prefabricated, modular design, enabling them to withstand heavy underwater loads and provide protection. They are primarily constructed from a special cement resistant to seawater corrosion, reinforced with steel bars to ensure stable performance in the high-pressure, highly corrosive environment of the deep sea.

[0003] The application of cement row closely revolves around the "protection and stability" requirements in marine engineering, mainly including: Post-installation protection for submarine infrastructure: During the installation of submarine optical cables, fiber-optic hydrophone arrays, and ocean sensor networks, cement battens are applied over the equipment to form a physical protective layer. For example, after transoceanic communication cables are laid, cement battens prevent damage from anchoring, dragging fishing nets, or submarine geological activity. In deep-sea observation networks, cement battens protect hydrophones from ocean currents and bioerosion.

[0004] Submarine cable crossover isolation: When submarine cables for different purposes (such as power cables and communication cables) are laid crosswise, cement strips serve as isolation barriers to avoid electromagnetic interference or physical friction between the cables, ensuring independent operation of each system.

[0005] Deep-sea engineering foundation support: In emerging projects such as deep-sea data centers and subsea manifold systems, cement slabs serve as counterweights for the equipment base, using their own weight to resist the impact of ocean currents and maintain the equipment's stability. For example, a deep-sea observatory requires securing a sensor array to the seabed. Precisely placed cement slabs form the support base, ensuring long-term, reliable operation.

[0006] Currently, the deployment of deepwater cement row pipes primarily relies on hoisting devices. For example, Chinese utility model patent No. CN219929365U discloses an underwater automatic unhooking and releasing hanger for concrete row pipes. The hanger comprises an I-beam frame, a hydraulic device mounted on the I-beam frame, a hoisting rope, and a hoisting lug. The hanger also includes a transmission assembly and a unhooking assembly. The transmission assembly comprises a transmission rod and a transmission plate. The unhooking assembly comprises an unhooking stop pin, a fixed stop pin, a first stop plate, and a second stop plate. One end of the transmission rod is welded to the transmission plate and slides in sequence with the first and second limit plates. One end of the unhooking limit pin is welded to the transmission plate and slides in sequence with the first and second limit plates. The fixed limit pin slides between the first and second limit plates and limits the sliding range by a buckle. The transmission rod, unhooking limit pin, and fixed limit pin are arranged in parallel. One end of the lifting rope is bolted to the unhooking limit pin and the other end is bolted to the fixed limit pin. The middle section of the lifting rope is connected to the lifting line ring of the concrete row. The transmission rod and the piston rod of the hydraulic device move synchronously. During deployment, the hydraulic device is used to pull the unhooking limit pin out from between the first and second limit plates. The concrete row connected to the lifting rope is then detached from the lifting rope in sequence and sinks to the target position, achieving automatic unhooking. The other end of the lifting rope is still bolted to the fixed limit pin. When the hanger is raised and recovered, the lifting rope can be recovered at the same time, achieving reuse of the lifting rope.

[0007] Although the above patent can realize the deployment of cement strips, in actual construction, the ship is affected by the sea conditions and the ship position is prone to slight drift, which leads to unstable position of the cement strips. Especially in deep-water operations, the hanger is affected by the ocean current and may rotate, sway, and other unstable conditions, making it impossible for the hanger to accurately judge its position and status, and unable to make timely adjustments and accurate deployment. In addition, the heavy cement strips are only supported by one transmission rod during deployment. When the single transmission rod is subjected to excessive force, it may be slightly deformed, causing the unhooking limit pin to be unable to smoothly disengage the limit hole. The slight polygonal shape of the transmission rod may cause greater error at the tail end. When unhooking, the uneven force on the cement strips may cause them to slide to one side, resulting in deviations in the deployment position. Summary of the Invention

[0008] The purpose of the present invention is to provide a lifting device for placing cement in rows, so as to solve the technical problem in the prior art that the devices used for placing cement in rows are difficult to place accurately.

[0009] In order to solve the above problems, the present invention provides a lifting device for cement row placement that adopts the following technical solutions: A lifting device for cement row placement, comprising a fixed frame, a movable frame, a driving unit, and a release mechanism; The fixed frame is provided with a plurality of hoisting parts distributed in an array around its center, and the middle positions of the front and rear sides of the fixed frame are respectively fixed with positioning beacon brackets for installing positioning beacons; The movable frame is located above the fixed frame and is guided and matched with the fixed frame in the left and right directions; a plurality of groups of release mechanisms are provided on the front and rear sides between the movable frame and the fixed frame, and are arranged at equal intervals in the left and right directions. The release mechanism includes a release member provided on one of the movable frame and the fixed frame and a release rod connected to the other, the release member having at least two release gaps spaced from each other in the left and right directions, and the release rod and the release member are plugged and matched in the left and right directions; the release rod is located on the outside of the fixed frame for the rope on the cement row to be connected, and the release gap is used to limit the position of the rope; The driving unit is installed on the fixed frame and is connected to the movable frame to drive the movable frame to move. During the movement of the movable frame, the cement is placed in a row when the release rod is pulled out from the corresponding release gap.

[0010] The beneficial effects of the present invention are as follows: the present invention adopts a design of multiple lifting parts distributed in an array around the center of the fixed frame, and the entire device is not easy to tilt during the lifting process; in addition, multiple groups of release mechanisms are arranged on the front and rear sides between the movable frame and the fixed frame to form multiple rope lifting points, which evenly distribute the weight of the cement row to each rope lifting point, reduce the force on each rope lifting point, and enhance the load-bearing capacity of the entire lifting device. Compared with the prior art, the weight of the cement row is no longer borne by a single transmission rod, but is distributed to the movable frame or the fixed frame through multiple release rods, but the movable frame and the fixed frame themselves are not easy to deform, so the uncoupling action can be guaranteed to be stable, and the release rod is not easy to be unable to disengage from the release gap; and the driving unit pushes the movable frame to move as a whole, so that each group of release mechanisms acts synchronously to uncouple. Compared with the single transmission rod uncoupling in the prior art, it can ensure that the cement row is evenly stressed and the position deviation is smaller during release. Even if the ship shifts due to sea conditions and the fixed and movable frames are affected by ocean currents during deepwater operations, the positioning beacons on the front and rear sides of the fixed frame can provide real-time underwater position information. Operators can cooperate with the AHC crane and ROV to achieve precise positioning and fine-tuning in deepwater environments, directly improving the placement accuracy of cement row gangs.

[0011] Furthermore, the fixed frame and the movable frame are both rectangular frames welded from I-beams.

[0012] Beneficial Effects: I-beams offer increased structural strength and, when used in a rectangular configuration, provide superior rigidity, capable of withstanding the high-pressure environment of deepwater and the heavy loads of cement tandems. This eliminates the uncoupling failure caused by deformation of the drive rod in existing technologies. The welded I-beam structure offers strong resistance to ocean currents, reducing hanger swing during deepwater operations and, when combined with positioning beacons, further improving deployment accuracy.

[0013] Furthermore, the fixed frame includes two fixed cross beams arranged in parallel and spaced apart in front and back, three fixed longitudinal beams arranged in parallel and spaced apart in left and right, and four fixed oblique beams symmetrically arranged on the left and right sides of the middle fixed longitudinal beam, the two ends of the fixed longitudinal beams are welded to the two fixed cross beams, and the two ends of the fixed oblique beams are welded to the corresponding adjacent fixed longitudinal beams and fixed cross beams; the two fixed oblique beams located on the same side of the middle fixed longitudinal beam are symmetrical front and back about the transverse symmetry axis of the fixed frame; the driving unit is fixed on an outer fixed longitudinal beam, and each fixed cross beam is provided with a plurality of the release members arranged in parallel and spaced apart on the left and right, and the positioning beacon is installed in the middle position of each fixed cross beam.

[0014] Beneficial effects: The symmetrical arrangement of the fixed oblique beams can enhance the torsional rigidity of the fixed frame, prevent deformation of the fixed end frame due to current impact or uneven weight, and maintain the structural stability of the fixed frame, especially in the harsh environment of deep sea. The release parts are spaced apart on the fixed beams, and each lifting point is subjected to force synchronously during unhooking, thus avoiding lateral slippage of the cement row. The positioning beacon is installed in the middle of the fixed beam, centered in the center, which can reduce the impact of the fixed frame offset on the positioning accuracy; the drive unit is installed on the outer fixed longitudinal beam to facilitate the layout and maintenance of the corresponding pipelines, and the line of action of the driving force passes through the center of the fixed frame to avoid tilting of the movable frame when pushed.

[0015] Furthermore, the movable frame includes two movable crossbeams arranged in parallel and spaced apart in front and back, and a plurality of movable longitudinal beams connected between the two movable crossbeams and arranged in parallel and spaced apart in left and right. The movable crossbeams are provided with fixed plates corresponding to the release members one by one, and the release rod is fixed on each fixed plate.

[0016] Beneficial Effect: When the movable frame moves, the release rod is simultaneously withdrawn to release the gap, achieving simultaneous unhooking of all suspension points, avoiding the uneven force caused by single-rod unhooking in existing technologies. The guide coordination between the movable frame and the fixed frame ensures a precise movement trajectory, preventing misalignment between the release rod and the release member, and avoiding unhooking failures.

[0017] Furthermore, the release member includes a connecting plate and a plurality of limit plates vertically connected to the connecting plate and arranged at intervals in the left and right directions. The release gap is formed between any two adjacent limit plates, and each limit plate is provided with a limit hole at the same position for the release rod to pass through.

[0018] Beneficial Effects: The limit hole guides the release rod, preventing it from tilting during unhooking, ensuring vertical release of the cement row and reducing placement deviation. Multiple limit plates work in conjunction with the release rod. Even if a single limit plate deforms under stress, the other limit plates can still maintain the release rod's position, avoiding the risk of single-rod unhooking failure in existing technologies.

[0019] Furthermore, the movable frame and the fixed frame are anti-detachment matched.

[0020] Beneficial effect: The two will not separate from each other when working, ensuring stable deployment.

[0021] Furthermore, the fixed beam is provided with a guide groove extending in the left and right directions, and the bottom of the movable beam is connected to a T-shaped piece that slides with the guide groove. The T-shaped piece includes a horizontal part and a vertical part. The horizontal part cooperates with the fixed beam in the up and down directions, and the vertical part cooperates with the fixed beam in the front and back directions.

[0022] Beneficial Effects: The horizontal and vertical portions of the T-piece restrict the movable frame's vertical and horizontal movement, respectively, allowing only left and right sliding. This prevents the movable frame from shifting when pushed by the drive unit and ensures synchronized operation of the release mechanism. The combination of the guide groove and the T-piece enhances the movable frame's ability to resist swaying in ocean currents, especially during deepwater operations. This reduces the frame's swaying caused by current impact and maintains the accuracy of the positioning beacon.

[0023] Furthermore, the widths of any two adjacent release gaps are equal.

[0024] Beneficial Effects: Equal release gap widths ensure consistent force at every rope connection point. This allows for simultaneous release of all lifting points on the cement gang during unhooking, preventing uneven force and lateral slippage caused by gap width variations. Uniform release gap widths facilitate standardized production of release components, reducing manufacturing errors and allowing for interchangeable components during maintenance, improving device reliability.

[0025] Furthermore, the driving unit is a hydraulic cylinder, which is arranged on the transverse symmetry axis of the fixed frame. The end of the movable frame is provided with a connecting ear, and the piston rod of the hydraulic cylinder is fixed to the connecting ear.

[0026] Beneficial Effects: The hydraulic cylinder provides uniform and controllable thrust. Compared to existing mechanical transmission technologies, it can precisely control the moving frame's speed and stroke, ensuring synchronized uncoupling of the release mechanism. The hydraulic cylinder is positioned on an axis of symmetry, ensuring balanced force on the moving frame during propulsion, preventing tilting due to uneven loading. This maintains overall stability of the moving frame, especially when heavy concrete row structures are involved.

[0027] Furthermore, the fixed frame and the movable frame are both telescopic frames with adjustable lengths.

[0028] Benefits: The telescopic frame can be adjusted to suit the length of the cement row or deployment scenario, enhancing the device's versatility and adapting to various cement row sizes or deep-sea equipment protection. The telescopic structure shortens the frame for transport, facilitating ship loading; it extends to the desired size during deployment, adapting to varying water depths and seabed topography, expanding the device's application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A top view of the cement row placement lifting device of the present invention; Figure 2 This is a front view of the cement row placement lifting device of the present invention; Figure 3 A side view of the cement row placement lifting device of the present invention when erected; Figure 4 It is a schematic diagram of the release mechanism of the lifting device for placing cement in row rows of the present invention; Figure 5 It is a structural diagram of a fixed frame; Figure 6 It is a structural diagram of the activity framework; Figure 7 This is a schematic diagram of cement row crossing protection.

[0030] Description of reference numerals: 1. Fixed frame; 11. Fixed crossbeam; 12. Fixed longitudinal beam; 13. Fixed oblique beam; 14. Guide trough; 15. Hoisting part; 2. Movable frame; 21. Movable crossbeam; 22. Movable longitudinal beam; 3. Hydraulic cylinder; 4. Positioning beacon bracket; 5. Release mechanism; 51. Release piece; 511. Connecting plate; 512. Limiting plate; 513. Release gap; 52. Release rod; 53. Fixed plate; 6. Cement row; 7. T-piece. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] Example 1 of a hoisting device for cement row placement provided by the present invention: like Figure 1 、 Figure 2 and Figure 3 As shown, the lifting device for placing the cement row 6 includes a fixed frame 1, a movable frame 2, a driving unit, a release mechanism 5 and a positioning beacon.

[0033] In this embodiment, Figure 4As shown, the fixed frame 1 is a rectangular frame formed by welding I-beams. Specifically, it includes two fixed horizontal beams 11 arranged parallel to each other in front and back, three fixed longitudinal beams 12 arranged parallel to each other in left and right, and four fixed diagonal beams 13 symmetrically arranged on the left and right sides of the central fixed longitudinal beam 12. The two ends of each fixed longitudinal beam 12 are welded to the two fixed horizontal beams 11, and the two ends of each fixed diagonal beam 13 are welded to the corresponding adjacent fixed longitudinal beams 12 and fixed horizontal beams 11. The two fixed diagonal beams 13 on the same side of the central fixed longitudinal beam 12 are symmetrical about the transverse axis of symmetry of the fixed frame 1. The fixed frame 1 is equipped with four lifting parts 15 arranged in a rectangular array around its center, and the four lifting parts 15 are located on the four fixed diagonal beams 13. A positioning beacon bracket 4 is fixed to the center of each of the two fixed beams 11, where a positioning beacon is mounted. This position, along the longitudinal axis of symmetry of the fixed frame 1, reduces the impact of the frame's swaying on positioning accuracy. Furthermore, the frame's high-strength structure reduces the impact of ocean currents on the positioning beacon. The positioning beacon is an existing technology, and can be a Kongsberg cNODE Micro, which has a built-in rechargeable battery and does not require a power source for use. The positioning beacon utilizes seawater-resistant signal transmission (e.g., hydroacoustic positioning technology) to achieve centimeter-level deployment accuracy, meeting the requirements of high-precision post-protection operations such as submarine optical cables and fiber-optic hydrophones.

[0034] like Figure 2 As shown, the movable frame 2 is located above the fixed frame 1 and is also a rectangular frame formed by welding I-beams. The movable frame 2 is guided and matched with the fixed frame 1 in the left and right directions. Figure 5 As shown, the movable frame 2 includes two movable crossbeams 21 arranged in parallel and spaced apart from each other in the front and back directions, and a plurality of movable longitudinal beams 22 connected between the two movable crossbeams 21 and arranged in parallel and spaced apart from each other in the left and right directions. The fixed crossbeam 11 is provided with a guide groove 14 extending in the left and right directions. A plurality of guide grooves 14 are arranged in left and right intervals on the fixed crossbeam 11. The bottom of the movable crossbeam 21 is connected with a T-shaped piece 7 that slides with the corresponding guide groove 14. The T-shaped piece 7 includes a horizontal portion and a vertical portion. The horizontal portion is stopped and matched with the fixed crossbeam 11 in the up and down directions, and the vertical portion is stopped and matched with the fixed crossbeam 11 in the front and back directions, thereby limiting the movable frame 2 from being separated from the fixed frame 1. During actual installation, a nut is welded to the bottom of the movable crossbeam 21. The vertical portion of the T-shaped piece 7 has an external thread section. The vertical portion of the T-shaped piece 7 is inserted into the guide groove 14 and threadedly connected to the nut. Of course, in other embodiments, the guide groove 14 can also be a long groove structure, extending to the end of the fixed beam 11. In this case, the T-shaped piece 7 can be directly welded to the bottom of the movable beam 21, and the T-shaped piece 7 slides into the guide groove 14 from one side. At this time, in order to reduce the impact of the loss of I-beam strength caused by the excessive length of the guide groove 14, a reinforcing steel plate can be welded in the fixed beam 11.

[0035] It should be noted that during actual deployment, the entire lifting device needs to be immersed in water. In order to prevent the fixed frame 1 and the movable frame 2 from being corroded by seawater, an anti-corrosion coating is also applied on the fixed frame 1 and the movable frame 2.

[0036] In this embodiment, the drive unit is a hydraulic cylinder 3, which is positioned on the transverse axis of symmetry of the fixed frame 1. A connecting lug is provided on the left movable longitudinal beam 22, to which the piston rod of the hydraulic cylinder 3 is fixed. When the hydraulic cylinder 3 is extended or retracted, it can drive the movable frame 2 to move left and right relative to the fixed frame 1.

[0037] Between the fixed crossbeam 11 and the movable crossbeam 21 on each side, multiple sets of release mechanisms 5 are evenly spaced in the horizontal direction. Each set of release mechanisms 5 comprises a release lever 52 and a release member 51. The release lever 52 is fixed to the movable crossbeam 21 via a fixed plate 53, while the release member 51 is welded to the fixed crossbeam 11. In this embodiment, the release member 51 consists of a connecting plate 511 and three stopper plates 512 welded perpendicularly to the connecting plate 511 and spaced in the horizontal direction. A release gap 513 is formed between any two adjacent stopper plates 512, and each release gap 513 is of equal width. Each stopper plate 512 has a stopper hole at the same position for the release lever 52 to pass through. The release lever 52 and the release member 51 are plug-fitted in the horizontal direction. The release lever 52 is located on the outside of the fixed frame 1, where the ropes on the cement gang 6 are connected. The release gaps 513 are used to limit the ropes on the cement gang 6.

[0038] During actual deployment, the cement blocks are arranged horizontally and vertically, and connected in series through polypropylene ropes to form cement row 6. The two ends of the polypropylene ropes are respectively sleeved on the release rods 52 on both sides. The positioning beacon plays the role of precise positioning and status monitoring. By transmitting the positioning signal through the positioning beacon, cooperating with the ROV (remote control underwater robot) and the surface equipment to receive, the three-dimensional position information of the entire device underwater can be obtained in real time, solving the problem of "unable to accurately judge the position". During the deployment of cement row 6, the operator can make millimeter-level fine adjustments to the hanger position through the AHC crane (automatic hydraulic control crane) or ROV assistance according to the real-time position information provided by the beacon, to ensure that the cement row 6 falls accurately at the target position. When reaching the deployment position, the hydraulic cylinder 3 extends and the movable frame 2 moves, so that the release rod 52 disengages from the corresponding release gap 513, completing the unhooking operation. The unhooked cement row 6 is placed at the corresponding position. The crossover protection diagram of the cement row 6 is shown as follows. Figure 6 shown.

[0039] In the above embodiment, the release member 51 is mounted on the fixed frame 1, while the release rod 52 is mounted on the movable frame 2. In other embodiments, the release member 51 may be mounted on the movable frame 2, and the release rod 52 may be mounted on the fixed frame 1. In this case, when the hydraulic cylinder 3 moves the movable frame 2, the release member 51 moves with the hydraulic cylinder 3. During this movement, the release member 51 pushes the ropes of the cement gang 6, pushing the ropes off the release rod 52.

[0040] In the above embodiment, the fixed frame 1 and the movable frame 2 are both welded from I-beams. In other embodiments, the fixed frame 1 and the movable frame 2 can also be welded from high-strength low-alloy steel pipes, which also have high yield strength and tensile strength and high corrosion resistance.

[0041] In the above embodiment, the drive unit utilizes a hydraulic cylinder 3. In other embodiments, the drive unit may also utilize a combination of a motor and a transmission structure. For example, a motor may be mounted on the fixed frame 1, with bearing blocks mounted on the fixed longitudinal beams 12 on either side of the fixed frame 1. Each bearing block houses a bearing, with a lead screw connected between the two bearings. One end of the lead screw is connected to the motor's output shaft via a coupling. The movable frame 2 is equipped with two sliders threadedly connected to the lead screw. The motor is connected to the ship's control cabinet via signal and power cables. To protect against seawater erosion, the motor and bearing blocks are each sealed in a sealed box.

[0042] In the above embodiment, the release member 51 is welded together by a connecting plate 511 and a limiting plate 512. In other embodiments, the release member 51 may also have an integrally formed structure, that is, the release member 51 is a block-shaped structure with two grooves formed on the other side. The spaces within the grooves form a release gap 513, and the limiting holes are drilled in the groove wall.

[0043] In the above embodiment, the fixed frame 1 and the movable frame 2 are both welded from I-beams, and therefore have fixed lengths. In other embodiments, the fixed frame 1 and the movable frame 2 are telescopic frames, and their lengths are adjustable. In this case, both can be welded from rectangular tubing. The fixed crossbeam 11 of the fixed frame 1 and the movable crossbeam 21 of the movable frame 2 each include a central fixed tube and movable fixed tubes located on the left and right sides of the central fixed tube. The movable fixed tubes are plugged into the central fixed tube and can move within the central fixed tube to adjust their lengths. After adjustment, the central fixed tube and the movable fixed tube are secured by a bolt and nut assembly, but the release rods 52 of each set of release mechanisms 5 remain at the same height.

[0044] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification. They are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0045] In the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hoisting device for cement row placement, characterized in that: It includes a fixed frame, a movable frame, a driving unit, and a release mechanism; The fixed frame is provided with a plurality of hoisting parts distributed in an array around its center, and the middle positions of the front and rear sides of the fixed frame are respectively fixed with positioning beacon brackets for installing positioning beacons; The movable frame is located above the fixed frame and is guided and matched with the fixed frame in the left and right directions; a plurality of groups of release mechanisms are provided on the front and rear sides between the movable frame and the fixed frame, and are arranged at equal intervals in the left and right directions. The release mechanism includes a release member provided on one of the movable frame and the fixed frame and a release rod connected to the other, the release member having at least two release gaps spaced from each other in the left and right directions, and the release rod and the release member are plugged and matched in the left and right directions; the release rod is located on the outside of the fixed frame for the rope on the cement row to be connected, and the release gap is used to limit the position of the rope; The driving unit is installed on the fixed frame and is connected to the movable frame to drive the movable frame to move. During the movement of the movable frame, the cement is placed in a row when the release rod is pulled out from the corresponding release gap.

2. A hoisting device for cement row placement according to claim 1, characterized in that: The fixed frame and the movable frame are both rectangular frames welded from I-beams.

3. A hoisting device for cement row placement according to claim 2, characterized in that: The fixed frame includes two fixed cross beams arranged in parallel and spaced apart in front and back, three fixed longitudinal beams arranged in parallel and spaced apart in left and right, and four fixed oblique beams symmetrically arranged on the left and right sides of the middle fixed longitudinal beam. The two ends of the fixed longitudinal beams are welded to the two fixed cross beams, and the two ends of the fixed oblique beams are welded to the corresponding adjacent fixed longitudinal beams and fixed cross beams; the two fixed oblique beams located on the same side of the middle fixed longitudinal beam are symmetrical front and back about the transverse symmetry axis of the fixed frame; the driving unit is fixed on an outer fixed longitudinal beam, and each fixed cross beam is provided with a plurality of the release members arranged in parallel and spaced apart on the left and right, and a positioning beacon is installed in the middle position of each fixed cross beam.

4. A hoisting device for cement row placement according to claim 3, characterized in that: The movable frame includes two movable crossbeams arranged in parallel and spaced relation front to back and a plurality of movable longitudinal beams connected between the two movable crossbeams and arranged in parallel and spaced relation left to right. The movable crossbeams are provided with fixing plates corresponding to the release members one by one, and the release rod is fixed on each fixing plate.

5. A hoisting device for cement row placement according to any one of claims 1 to 4, characterized in that: The release member includes a connecting plate and a plurality of limit plates vertically connected to the connecting plate and arranged at intervals in the left and right directions. The release gap is formed between any two adjacent limit plates, and each limit plate is provided with a limit hole at the same position for the release rod to pass through.

6. A hoisting device for cement row placement according to claim 4, characterized in that: The movable frame and the fixed frame are anti-dropping matched.

7. A hoisting device for cement row placement according to claim 6, characterized in that: The fixed beam is provided with a guide groove extending in the left and right directions, and the bottom of the movable beam is connected to a T-shaped piece that slides with the guide groove. The T-shaped piece includes a horizontal part and a vertical part. The horizontal part cooperates with the fixed beam in the up and down directions, and the vertical part cooperates with the fixed beam in the front and back directions.

8. The hoisting device for cement row placement according to claim 5, characterized in that: The widths of any two adjacent release gaps are equal.

9. A hoisting device for cement row placement according to any one of claims 2 to 4, characterized in that: The driving unit is a hydraulic cylinder, which is arranged on the transverse symmetry axis of the fixed frame. The end of the movable frame is provided with a connecting ear, and the piston rod of the hydraulic cylinder is fixed to the connecting ear.

10. The hoisting device for cement row placement according to claim 1, characterized in that: The fixed frame and the movable frame are both telescopic frames with adjustable lengths.

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