A hoisting device and a method for installing a prefabricated driveway slab

Abstract

The present invention belongs to the technical field of tunnel internal structure construction, and discloses a lifting device and a method for installing prefabricated lane slabs. The lifting device includes a frame body, a main lifting mechanism, and an auxiliary lifting mechanism; the frame body includes a travel assembly, and the travel assembly includes a plurality of rollers arranged in a rectangular array and installed at the bottom of the frame body; the main lifting mechanism is slidably installed on the frame body and can move in a first direction and a second direction, the first direction is parallel to the travel direction of the frame body, and the second direction is perpendicular to the first direction; the auxiliary lifting mechanism is slidably installed on the frame body and can move in the first direction. The lifting device can reduce its own weight without affecting the transportation of other materials in the tunnel, simplify the construction process, and at the same time realize the alternating lifting and installation of temporary lane slabs and prefabricated lane slabs during the travel process.

Description

[0001] This application claims priority to patent application number 202210538477X (the filing date of the prior application is May 17, 2022, and the invention name is A lifting device and prefabricated driveway slab installation method). Technical Field

[0002] The present invention relates to the technical field of tunnel internal structure construction, and in particular to a hoisting device and a prefabricated lane slab installation method. Background Art

[0003] The Jianglu water supply corridor and road improvement project commonly uses the shield method for mainline shield tunneling, using ultra-large diameter slurry shield machines. The shield method is a fully mechanized construction method within the underground tunneling method. The shield machine is advanced underground, with the shield casing and segments supporting the surrounding rock to prevent collapse into the tunnel. Simultaneously, soil is excavated in front of the excavation face using cutting devices. This is then transported out of the tunnel by excavation machinery, where it is pressurized and pushed forward by jacks from the rear. Precast concrete segments are then assembled to form the tunnel structure. During the shield method construction process, a driving lane is required. The internal structure of the tunnel is a U-shaped prefabricated box culvert flanked by prefabricated roadway slabs. Together, the U-shaped box culvert and the prefabricated roadway slabs form the driving lane.

[0004] During the construction of the roadway, the U-shaped prefabricated box culvert was installed using the shield machine's dedicated lifting equipment, proceeding simultaneously with the tunneling process. Once installed, the U-shaped prefabricated box culvert served as a material transport channel during shield construction. The prefabricated roadway slabs were large, constructed of reinforced concrete, and weighed a significant 7.5 tons. Due to the limited space within the tunnel, crane installation was not possible. Furthermore, due to their heavy weight, using a forklift to install them presented a risk of tipping.

[0005] To address the aforementioned issues, the prior art provides a mobile hoisting device for tunnel internal structure construction, comprising a main structure, a crawler-type traveling mechanism, a chain hoist device, and a power unit. A crawler-type traveling mechanism driven by the power unit is mounted below the main structure. The chain hoist device is connected to the front crossbeam of the main structure via a chain hoist rail beam. The chain hoist device lifts prefabricated roadway slabs or curbs via a hoisting hoist. Driven by the power unit, the chain hoist device moves the prefabricated roadway slabs or curbs via the crawler-type traveling mechanism. However, the prior art mobile hoisting device, which is moved by a crawler-type traveling mechanism, has a complex structure and a heavy deadweight, which hinders the simplified construction process. During the movement of the hoisting device, a temporary roadway slab is sometimes required beneath the front of the main structure to facilitate its movement. However, the hook assembly used to attach the prefabricated roadway slabs or curbs in the prior art mobile hoisting device is located only at the front end of the main structure, enabling only the lifting and installation of prefabricated roadway slabs or curbs, but not the lifting and installation of temporary roadway slabs.

[0006] Therefore, there is an urgent need for a hoisting device and a prefabricated driveway slab installation method to solve the above problems. Summary of the Invention

[0007] According to one aspect of the present invention, the object is to provide a lifting device that can reduce its own weight without affecting the transportation of other materials in the tunnel, simplify the construction process, and at the same time realize the alternating lifting and installation of temporary lane slabs and prefabricated lane slabs during the movement.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] A lifting device includes a frame body, a main lifting mechanism and an auxiliary lifting mechanism; the frame body includes a travel assembly, the travel assembly includes a plurality of rollers, the plurality of rollers are arranged in a rectangular array and are installed at the bottom of the frame body; the main lifting mechanism is slidably installed on the frame body and can move along a first direction and a second direction, the first direction is parallel to the travel direction of the frame body, and the second direction is perpendicular to the first direction, the main lifting mechanism is configured to lift prefabricated lane slabs; the auxiliary lifting mechanism is slidably installed on the frame body and can move along the first direction, the auxiliary lifting mechanism is configured to lift temporary lane slabs.

[0010] Optionally, the frame body further includes a first crossbeam, a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are arranged parallel to each other and spaced apart, and the first crossbeam is mounted on the first longitudinal beam and the second longitudinal beam.

[0011] Optionally, the main lifting mechanism includes a first lifting assembly and a second lifting assembly, the first lifting assembly and the second lifting assembly are slidably mounted on the frame body, the first lifting assembly can move along the first cross beam and the first longitudinal beam, and the second lifting assembly can move along the first cross beam and the second longitudinal beam.

[0012] Optionally, the first lifting assembly includes a first reel, a first sling, and a first hook connected in sequence, the first reel being movable along the first transverse beam and the first longitudinal beam, and the first hook being configured to hang the prefabricated driveway slab on one side;

[0013] The second lifting assembly includes a second reel, a second sling, and a second hook connected in sequence. The second reel can move along the first transverse beam and the second longitudinal beam. The second hook is configured to hang the prefabricated driveway slab on the other side.

[0014] Optionally, the frame body further includes a third longitudinal beam and a fourth longitudinal beam arranged parallel to each other and spaced apart from each other, the third longitudinal beam being mounted on the first longitudinal beam, and the fourth longitudinal beam being mounted on the second longitudinal beam.

[0015] Optionally, the first longitudinal beam includes a first main beam body and a first wing plate, the first wing plate is fixedly connected to the first main beam body, the first lifting assembly is slidably mounted on the first wing plate, and the third longitudinal beam is mounted on the first main beam body, with an end portion abutting against the first wing plate;

[0016] The second longitudinal beam includes a second main beam body and a second wing plate, the second wing plate is fixedly connected to the second main beam body, the second lifting assembly is slidably installed on the second wing plate, and the fourth longitudinal beam is installed on the second main beam body, with its end against the second wing plate.

[0017] Optionally, the auxiliary lifting mechanism includes a third lifting assembly and a fourth lifting assembly, the third lifting assembly is slidably arranged on the third longitudinal beam, and the fourth lifting assembly is slidably arranged on the fourth longitudinal beam.

[0018] Optionally, the frame body further includes a first leg, a second leg, a third leg and a fourth leg arranged in a rectangular array, the first leg is mounted on the third longitudinal beam, the second leg is mounted on the first longitudinal beam, the third leg is mounted on the second longitudinal beam, and the fourth leg is mounted on the fourth longitudinal beam; a roller is mounted on the end of each of the first leg, the second leg, the third leg and the fourth leg.

[0019] Optionally, the frame body further includes a second cross beam connecting the first longitudinal beam and the second longitudinal beam.

[0020] According to another aspect of the present invention, a method for installing a prefabricated driveway slab is provided, using the hoisting device described in any of the above-mentioned solutions. The method for installing a prefabricated driveway slab specifically comprises the following steps:

[0021] S100, laying temporary driveway slabs;

[0022] S200, transporting prefabricated driveway slabs;

[0023] S300, main lifting mechanism hoists prefabricated lane slabs;

[0024] S400, installation of prefabricated driveway slabs;

[0025] S500, auxiliary lifting mechanism hoists temporary lane slab;

[0026] S600, installation of temporary lane slabs;

[0027] S700: Push the main body of the vehicle frame forward.

[0028] Beneficial effects of the present invention:

[0029] The hoisting device provided by the present invention is provided with a frame body, on which a travel assembly is installed. The travel assembly includes a plurality of rollers. By rolling the rollers, the frame body can be moved in the tunnel, thereby simplifying the travel method. The main hoisting mechanism and the auxiliary hoisting mechanism are both slidably connected to the frame body. The main hoisting mechanism can move along the first direction and the second direction of the frame body and is configured to hoist the prefabricated lane slab. The auxiliary hoisting mechanism can move along the first direction of the frame body and is configured to hoist the temporary lane slab. The main hoisting mechanism and the auxiliary hoisting mechanism can realize the alternating lifting and installation of the prefabricated lane slab and the temporary lane slab during the movement of the frame body, thereby realizing the laying of the prefabricated lane during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front view of a lifting device provided by an embodiment of the present invention;

[0031] Figure 2 is a side view of a lifting device provided by an embodiment of the present invention;

[0032] Figure 3 is a top view of a lifting device provided by an embodiment of the present invention;

[0033] Figure 4 is a flow chart of a method for installing a prefabricated driveway slab provided by an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of laying temporary lane slabs and prefabricated lane slabs at the bottom of a tunnel in the prefabricated lane slab installation method provided by an embodiment of the present invention;

[0035] Figure 6 is a schematic structural diagram of a prefabricated driveway slab provided by an embodiment of the present invention;

[0036] Figure 7 It is a structural schematic diagram of a temporary lane slab provided by an embodiment of the present invention.

[0037] In the picture:

[0038] 10. Prefabricated lane slab; 11. Reserved hook; 20. Temporary lane slab; 30. Transport vehicle; 40. Reserved installation position;

[0039] 100, frame body; 110, travel assembly; 111, roller; 120, first crossbeam; 130, first longitudinal beam; 140, second longitudinal beam; 150, third longitudinal beam; 160, first leg; 170, second leg; 180, third leg; 190, second crossbeam;

[0040] 200, main lifting mechanism; 210, first lifting assembly; 211, first reel; 212, first sling; 220, second lifting assembly; 221, second reel; 222, second sling;

[0041] 300. Auxiliary lifting mechanism; 310. Third lifting assembly; 320. Fourth lifting assembly. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0043] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, terms such as "upper," "lower," "right," and "left" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0046] Figure 1 1 shows a front view of a lifting device provided by an embodiment of the present invention, Figure 2 A side view of a lifting device provided by an embodiment of the present invention is shown. Figure 3 FIG2 shows a top view of a lifting device provided by an embodiment of the present invention. Figure 1-Figure 3 This embodiment provides a lifting device, which includes a frame body 100, a main lifting mechanism 200 and an auxiliary lifting mechanism 300.

[0047] Specifically, the vehicle frame 100 includes a travel assembly 110, which includes a plurality of rollers 111 arranged in a rectangular array and mounted on the bottom of the vehicle frame 100. The main lifting mechanism 200 is slidably mounted on the vehicle frame 100 and is capable of moving in a first direction and a second direction of the vehicle frame 100. The first direction is parallel to the travel direction of the vehicle frame 100, and the second direction is perpendicular to the first direction. The main lifting mechanism 200 is configured to lift the prefabricated driveway slab 10. The auxiliary lifting mechanism 300 is slidably mounted on the vehicle frame 100 and is capable of moving in the first direction of the vehicle frame 100. The auxiliary lifting mechanism is configured to lift the temporary driveway slab 20.

[0048] Continue to refer to Figure 1-Figure 3The vehicle frame body 100 further includes a first crossbeam 120, a first longitudinal beam 130, and a second longitudinal beam 140. The first longitudinal beam 130 and the second longitudinal beam 140 are arranged parallel to each other and spaced apart. The first crossbeam 120 is mounted on the first longitudinal beam 130 and the second longitudinal beam 140. The first crossbeam 120 provides positioning for the first longitudinal beam 130 and the second longitudinal beam 140 and connects the first longitudinal beam 130 and the second longitudinal beam 140 to form a C-shaped track for the sliding of the main lifting mechanism 200.

[0049] Specifically, the main lifting mechanism 200 includes a first lifting assembly 210 and a second lifting assembly 220. The first lifting assembly 210 and the second lifting assembly 220 are slidably mounted on the vehicle frame body 100. The first lifting assembly 210 is movable along the first crossbeam 120 and the first longitudinal beam 130, and the second lifting assembly 220 is movable along the first crossbeam 120 and the second longitudinal beam 140. The first crossbeam 120 is arranged parallel to the second direction. The first lifting assembly 210 and the second lifting assembly 220 lift the prefabricated roadway slabs 10 at the location of the first crossbeam 120 and move in opposite directions in the second direction, respectively, to transport the two prefabricated roadway slabs 10 to the first longitudinal beam 130 and the second longitudinal beam 140. The first longitudinal beam 130 and the second longitudinal beam 140 are arranged parallel to the first direction. The prefabricated lane slab 10 moving to the first longitudinal beam 130 and the second longitudinal beam 140 can move along the first longitudinal beam 130 and the second longitudinal beam 140 respectively, thereby realizing position adjustment of the prefabricated lane slab 10 along the first direction.

[0050] More specifically, the first lifting assembly 210 includes a first reel 211, a first sling 212, and a first hook connected in sequence. The first reel 211 is movable along the first transverse beam 120 and the first longitudinal beam 130, and the first hook is configured to hang the prefabricated driveway slab 10 on one side. Similarly, the second lifting assembly 220 includes a second reel 221, a second sling 222, and a second hook. The second reel 221 is movable along the first transverse beam 120 and the second longitudinal beam 140, and the second hook is configured to hang the prefabricated driveway slab 10 on the other side.

[0051] More specifically, the vehicle frame body 100 further includes a third longitudinal beam 150 and a fourth longitudinal beam spaced apart and arranged parallel to each other. The third longitudinal beam 150 is mounted on the lower side of the first longitudinal beam 130, and the fourth longitudinal beam is mounted on the lower side of the second longitudinal beam 140. The third longitudinal beam 150 provides a motion track for a portion of the auxiliary lifting mechanism 300, while the fourth longitudinal beam provides a motion track for another portion of the auxiliary lifting mechanism 300. The motion tracks of the main lifting mechanism 200 and the auxiliary lifting mechanism 300 do not interfere with each other, thus preventing interference between the auxiliary lifting mechanism 300 and the main lifting mechanism 200 during movement.

[0052] More specifically, the auxiliary lifting mechanism 300 includes a third lifting assembly 310 and a fourth lifting assembly 320. The third lifting assembly 310 is slidably mounted on the third longitudinal beam 150, while the fourth lifting assembly 320 is slidably mounted on the fourth longitudinal beam. The third lifting assembly 310 and the fourth lifting assembly 320 are respectively used to lift the temporary lane slabs 20 on both sides of the vehicle frame 100.

[0053] More specifically, refer to Figure 1 The first longitudinal beam 130 includes a first main beam body and a first wing plate. The first wing plate is fixedly connected to one side of the first main beam body, and one end thereof is flush with the end of the first main beam body. The first lifting assembly 210 is slidably mounted on the first wing plate and can move along the first wing plate. The third longitudinal beam 150 is mounted on the lower side of the first main beam body, and its end abuts against the end of the first wing plate. The first cross beam 120 is connected to the first wing plate. By setting the first wing plate, after the first lifting assembly 210 lifts the prefabricated lane slab 10 on the first cross beam 120, it moves to the first wing plate and realizes the same linear motion with the third lifting assembly 310 without forming an interference effect.

[0054] Similarly, the second longitudinal beam 140 includes a second main beam and a second wing. The second wing is fixedly connected to one side of the second main beam, with one end thereof flush with the end of the second main beam. The second lifting assembly 220 is slidably mounted on the second wing and is capable of moving along the second wing. The fourth longitudinal beam is mounted on the second main beam, with its end abutting the end of the second wing. The first crossbeam 120 is connected to the second wing. By providing the second wing, the second lifting assembly 220 lifts the prefabricated roadway slab 10 from the first crossbeam 120 and then moves to the second wing, achieving the same linear motion as the fourth lifting assembly 320 without interfering with each other.

[0055] Continue to refer to Figure 1-Figure 2 The vehicle frame body 100 further includes a first leg 160, a second leg 170, a third leg 180, and a fourth leg arranged in a rectangular array. The first leg 160 is mounted on the third longitudinal beam 150, the second leg 170 is mounted on the first longitudinal beam 130, the third leg 180 is mounted on the second longitudinal beam 140, and the fourth leg is mounted on the fourth longitudinal beam. Each of the first leg 160, the second leg 170, the third leg 180, and the fourth leg is mounted on a roller 111. Through the above arrangement, the motion tracks of the main hoisting mechanism 200 and the auxiliary hoisting mechanism 300 are lifted off the ground, ensuring the feasibility of the lifting function. The rollers 111 provided at the ends of the legs enable the vehicle frame body 100 to move in a tunnel.

[0056] Specifically, the roller 111 provided in this embodiment can select a tire-type running mechanism in the prior art, which can be turned 180 degrees, and each tire can be controlled individually, so as to realize straight, horizontal and curved travel.

[0057] Preferably, the frame body 100 further includes a second crossbeam 190, which connects the first longitudinal beam 130 and the second longitudinal beam 140. The ends of the second crossbeam 190 are respectively mounted to the end of the third longitudinal beam 150 facing away from the first wing plate and the end of the second wing plate facing away from the fourth longitudinal beam. The provision of the second crossbeam 190 strengthens the stability of the first longitudinal beam 130 and the second longitudinal beam 140, thereby ensuring the service life of the lifting device.

[0058] Figure 4 A flow chart showing a method for installing a prefabricated driveway slab according to an embodiment of the present invention is shown. Figure 5 The diagram of laying the temporary lane plate and prefabricated lane plate at the bottom of the tunnel in the prefabricated lane plate installation method provided by the embodiment of the present invention is shown. Figure 4 The prefabricated driveway slab installation method provided in this embodiment uses the hoisting device provided in this embodiment, and the specific steps are as follows:

[0059] Step S100: laying a temporary lane slab 20.

[0060] Specifically, if Figure 4 As shown, step S100 is the step before the installation of the subsequent prefabricated lane slab 10 after the installation of the previous prefabricated lane slab 10 is completed. Before the installation of the prefabricated lane slab 10, six temporary lane slabs 20 have been installed on the ground below the first leg 160 and the fourth leg of the front end of the vehicle frame 100. Three temporary lane slabs 20 are set on the ground to the left and right of the vehicle frame 100. Figure 5 At this time, the rollers 111 at the lower ends of the second leg 170 and the third leg 180 at the rear end of the vehicle frame body 100 are both located on the prefabricated roadway slab 10 that has been installed.

[0061] More specifically, Figure 7 The structural diagram of the temporary lane plate provided by the embodiment of the present invention is shown. Figure 7 The temporary lane plate 20 provided in this embodiment includes two I-beams and a patterned steel plate. The two I-beams are arranged parallel to each other and spaced apart, and are welded to the patterned steel plate to form a track for the roller 111 to travel.

[0062] Step S200: transporting the prefabricated driveway slab 10.

[0063] In step S200, the transport vehicle 30 is used to transport the two prefabricated lane slabs 10 to the bottom of the frame body 100 through the transport channel below the frame body 100. After the two prefabricated lane slabs 10 are transported to the target position, i.e., below the first crossbeam 120, the transport vehicle 30 is driven to leave the transport channel to ensure that the transport channel is unobstructed and does not affect the subsequent transportation of pipe segments and other materials.

[0064] Step S300 : The main lifting mechanism 200 hoists the prefabricated lane slab 10 .

[0065] Figure 6 The structural diagram of the prefabricated lane plate provided by the embodiment of the present invention is shown. Figure 6 , four reserved hooks 11 are installed on the prefabricated driveway slab 10. The reserved hooks 11 are configured to connect the first hook and / or the second hook.

[0066] Specifically, in step S300, one of the prefabricated driveway slabs 10 is lifted by the first hook, and the other prefabricated driveway slab 10 is lifted by the second hook. Subsequently, the first reel 211 and the second reel 221 are activated to lift the two prefabricated driveway slabs 10 respectively by the reeled first sling 212 and the reeled second sling 222. After lifting them to a fixed height, i.e., approximately 40 cm from the ground, the two prefabricated driveway slabs 10 are respectively transported to the first wing plate and the second wing plate, and the position of the first reel 211 on the first wing plate and the position of the second reel 221 on the second wing plate are adjusted.

[0067] Then, if Figure 5 , driving the frame body 100 to move forward, and moving to the target position, that is, after transporting the two prefabricated lane slabs 10 to the reserved installation position 40, the prefabricated lane slabs 10 are rotated through manual intervention, and the prefabricated lane slabs 10 are rotated to the direction of the tunnel ground on both sides of the frame body 100.

[0068] Step S400: Install the prefabricated driveway slab 10.

[0069] Step S500 : The auxiliary lifting mechanism 300 hoists the temporary lane slab 20 .

[0070] Specifically, after the two prefabricated lane slabs 10 are installed, the third lifting assembly 310 and the fourth lifting assembly 320 are started to lift the two temporary lane slabs 20, lift them to about 40 cm from the ground, and move them forward to the front of the original position of the temporary lane slabs 20.

[0071] Step S600: Install the temporary lane slab 20.

[0072] Specifically, in step S600, the temporary lane slab 20 is rotated manually, and after the temporary lane slab 20 is stabilized, two temporary lane slabs 20 are lowered to the target position.

[0073] Step S700: Propel the vehicle frame body 100 forward.

[0074] Subsequently, steps S200 to S700 are repeated, and the prefabricated roadway slabs 10 are installed piece by piece as the hoisting device advances along the tunnel.

[0075] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A lifting device, characterized in that: include: A vehicle frame body (100) includes a travel assembly (110), wherein the travel assembly (110) includes a plurality of rollers (111), and the plurality of rollers (111) are arranged in a rectangular array and mounted on the bottom of the vehicle frame body (100); A main lifting mechanism (200) is slidably mounted on the vehicle frame body (100) and is capable of moving in a first direction and a second direction, wherein the first direction is parallel to the direction of travel of the vehicle frame body (100) and the second direction is perpendicular to the first direction, and the main lifting mechanism (200) is configured to lift a prefabricated roadway slab (10); A secondary lifting mechanism (300) is slidably mounted on the vehicle frame body (100) and is movable in a first direction, the secondary lifting mechanism being configured to lift a temporary lane plate (20); The frame body (100) further comprises a first crossbeam (120), a first longitudinal beam (130) and a second longitudinal beam (140), wherein the first longitudinal beam (130) and the second longitudinal beam (140) are arranged parallel to each other and spaced apart, and the first crossbeam (120) is mounted on the first longitudinal beam (130) and the second longitudinal beam (140); The main lifting mechanism (200) includes a first lifting assembly (210) and a second lifting assembly (220), wherein the first lifting assembly (210) and the second lifting assembly (220) are slidably mounted on the vehicle frame body (100), the first lifting assembly (210) is capable of moving along the first crossbeam (120) and the first longitudinal beam (130), and the second lifting assembly (220) is capable of moving along the first crossbeam (120) and the second longitudinal beam (140); The frame body (100) further includes a third longitudinal beam (150) and a fourth longitudinal beam arranged parallel to each other and spaced apart from each other, the third longitudinal beam (150) being mounted on the first longitudinal beam (130), and the fourth longitudinal beam being mounted on the second longitudinal beam (140); The first longitudinal beam (130) includes a first main beam body and a first wing plate, the first wing plate is fixedly connected to the first main beam body, the first lifting assembly (210) is slidably mounted on the first wing plate, and the third longitudinal beam (150) is mounted on the first main beam body, with an end portion abutting against the first wing plate; The second longitudinal beam (140) comprises a second main beam body and a second wing plate, the second wing plate is fixedly connected to the second main beam body, the second lifting assembly (220) is slidably mounted on the second wing plate, and the fourth longitudinal beam is mounted on the second main beam body, with its end abutting against the second wing plate; The auxiliary lifting mechanism (300) comprises a third lifting component (310) and a fourth lifting component (320), wherein the third lifting component (310) is slidably arranged on the third longitudinal beam (150), and the fourth lifting component (320) is slidably arranged on the fourth longitudinal beam.

2. The hoisting device according to claim 1, characterized in that: The first lifting assembly (210) includes a first reel (211), a first sling (212), and a first hook connected in sequence, the first reel (211) being capable of moving along the first transverse beam (120) and the first longitudinal beam (130), and the first hook being configured to hang the prefabricated driveway slab (10) on one side; The second lifting assembly (220) includes a second reel (221), a second sling (222) and a second hook connected in sequence, the second reel (221) is capable of moving along the first crossbeam (120) and the second longitudinal beam (140), and the second hook is configured to hang the prefabricated lane slab (10) on the other side.

3. The hoisting device according to claim 2, characterized in that: The frame body (100) further comprises a first leg (160), a second leg (170), a third leg (180) and a fourth leg arranged in a rectangular array, wherein the first leg (160) is mounted on the third longitudinal beam (150), the second leg (170) is mounted on the first longitudinal beam (130), the third leg (180) is mounted on the second longitudinal beam (140), and the fourth leg is mounted on the fourth longitudinal beam; and each end of the first leg (160), the second leg (170), the third leg (180) and the fourth leg is mounted with a roller (111).

4. The hoisting device according to claim 1, characterized in that: The vehicle frame body (100) further includes a second crossbeam (190), wherein the second crossbeam (190) connects the first longitudinal beam (130) and the second longitudinal beam (140).

5. A method for installing a prefabricated driveway slab, characterized in that: Using the lifting device according to any one of claims 1 to 4, the specific steps are as follows: S100, laying temporary lane slabs (20); S200, transporting prefabricated driveway slabs (10); S300, the main lifting mechanism (200) hoists the prefabricated lane slab (10); S400, installing prefabricated driveway slabs (10); S500, the auxiliary lifting mechanism (300) hoists the temporary lane plate (20); S600, install temporary lane slab (20); S700, pushing the vehicle frame body (100) forward.

Images