A transfer trolley for precast grid beams

Abstract

The utility model relates to the field of side slope construction auxiliary device discloses a transfer trolley of prefabricated grid beam, include: support plate, moving wheel is connected to the left side and right side of support plate through pivot, hoist board, is equipped with lifting hook in front end, jacking assembly, counterweight groove is connected to the back side of support plate, with support plate vertical, inside slide sets counterweight block, adjusting part is used for adjusting the position of counterweight block in counterweight groove, support assembly, the utility model discloses the barycenter of transfer trolley is located in the pivot front of moving wheel through adjusting part, and hoist board front end moves down to hang prefabricated grid beam on the lifting hook, then through the elongation jacking assembly, makes the lifting rope and lifting hook rise to the height of the promotion prefabricated grid beam, adjusts the position of counterweight block through adjusting part, and support plate leans backward around pivot to utilize support assembly and moving wheel to support transfer trolley together, so that, make the process of moving prefabricated grid beam only need manual to exert the thrust to trolley, effectively reduce the labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary devices for slope construction, specifically to a transfer trolley for precast grid beams. Background Technology

[0002] In slope protection construction, grid beams are a common structure used for slope support. They enhance slope stability by installing anchor bolts driven into the slope onto the grid beams, and also by using the weight of the grid beams themselves to distribute slope stress, thus achieving slope protection. In existing technologies, grid beams with anchor bolts are typically installed using a cast-in-place method (usually the anchor bolts are installed first, and then the grid beams and anchor bolts are cast together). Grid beams that utilize their own weight to distribute slope stress are typically prefabricated and cast in place before being transported to the construction site for installation. Prefabricated casting reduces the additional waiting time required for cast-in-place methods, thereby improving construction efficiency.

[0003] In the process of slope protection construction using precast grid beams, the precast grid beams are usually poured in advance, then transported to the slope walkway for stacking, and then manually transported to the installation location on the slope for installation and fixation. Since the precast grid beams usually weigh 30-40 kg, the manual handling process requires a lot of physical strength from the construction workers, resulting in extremely high labor intensity and a high risk of fatigue. This can also affect the accuracy and safety of the subsequent installation of the precast grid beams.

[0004] Therefore, a transfer trolley for prefabricated grid beams is proposed. Utility Model Content

[0005] This utility model provides a transfer trolley for precast grid beams to solve the problem that in the prior art, manual transfer of precast grid beams is labor-intensive, easily leading to fatigue, and even affecting the accuracy and safety of the subsequent installation process of precast grid beams.

[0006] Specifically, this utility model refers to a transfer trolley for prefabricated grid beams, comprising: Support plate; The movable wheels are connected to the left and right sides of the support plate via a pivot. The hoisting plate is set on top of the support plate, with a hoisting rope at the front end and a hook at the bottom of the hoisting rope for suspending the precast grid beam; The top support assembly is connected to the front side of the support plate at one end and is used to support the ground at the other end. By extending the top support assembly, the support plate is rotated around the pivot, which drives the front end of the hoisting plate to move upward, thereby lifting the precast grid beam. The counterweight groove is connected to the rear side of the support plate and is perpendicular to the support plate. A counterweight block is slidably installed inside it. Adjustment components are used to adjust the position of the counterweight in the counterweight groove so that the center of gravity of the transfer trolley is located in front of or behind the rotating shaft. The support assembly, connected to the rear side of the support plate, is used to support the transfer trolley together with the moving wheels when the center of gravity of the transfer trolley is located behind the pivot and the transfer trolley tilts backward.

[0007] Specifically, the top support assembly includes a storage plate connected to the front side of the support plate; the storage plate is inclined downward and has a storage cavity, in which a sliding movable plate is provided, and a spherical support wheel is provided at the bottom of the movable plate; The top support assembly also includes a hydraulic telescopic rod that can extend and retract along the sliding direction of the movable plate. The piston rod end of the hydraulic telescopic rod is fixedly connected to the movable plate, and the other end is fixedly connected to the outer wall of the storage plate.

[0008] Specifically, the top support assembly includes a horizontal plate connected to the front side of the support plate, and the front end of the horizontal plate is connected to a storage plate; the storage plate is inclined downward and has a storage cavity, in which a sliding movable plate is provided, and a spherical support wheel is provided at the bottom of the movable plate; The top support assembly also includes a hydraulic telescopic rod that can extend and retract along the sliding direction of the movable plate. The piston rod end of the hydraulic telescopic rod is fixedly connected to the movable plate, and the other end is fixedly connected to the outer wall of the storage plate.

[0009] Furthermore, the spherical support wheel includes a hemispherical sleeve, inside which a spherical wheel is rotatably embedded.

[0010] Furthermore, the inner wall of the hemispherical sleeve is provided with a number of rotatable auxiliary balls, and the spherical wheel is rotatably disposed in the sleeve and abuts against the auxiliary balls.

[0011] Specifically, the adjusting component includes a compression spring, one end of which is connected to the front wall of the counterweight groove and the other end of which is connected to the front side of the counterweight block; the adjusting component also includes an electric push rod, one end of which is connected to the rear wall of the counterweight groove and the other end of which is connected to a surface for pushing against the rear side of the counterweight block.

[0012] Specifically, the adjusting component includes an adjusting groove disposed on the side wall of the counterweight groove, the adjusting groove being strip-shaped and perpendicular to the support plate; an adjusting rod penetrating the adjusting groove is provided on the side of the counterweight block, the adjusting rod having external threads, and the adjusting rod is also fitted with a nut that presses against the side wall of the counterweight groove from the outside.

[0013] Specifically, the support assembly includes two support rods connected to the left and right sides of the rear side of the support plate; the two support rods converge at a point and are connected to a support wheel, the bottom edge of which is higher than the bottom edge of the movable wheel.

[0014] Specifically, the support assembly includes two "L"-shaped support rods, each support rod including a horizontal bar and a vertical bar connected to the bottom of the horizontal bar. The bottom of the vertical bar is provided with a support wheel, and the bottom edge of the support wheel is higher than the bottom edge of the moving wheel. The horizontal bars of the two support rods are respectively connected to the left and right sides of the rear side of the support plate.

[0015] In particular, a push handle is also connected to the rear side of the support plate.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: By adjusting the counterweight to the front of the counterweight groove using the adjusting mechanism, the center of gravity of the transfer trolley is positioned in front of the axle of the moving wheels. The top support assembly is then retracted, causing the support plate to tilt forward around the axle, lowering the front of the lifting plate and lowering the lifting ropes and hooks to suspend the precast grid beam on the hooks. Next, the top support assembly is extended, causing the support plate to rotate backward around the axle, raising the front of the lifting plate and lifting the lifting ropes and hooks to increase the height of the precast grid beam. During the ascent of the lifting ropes and hooks, the counterweight is adjusted to the rear of the counterweight groove using the adjusting mechanism, moving the center of gravity of the transfer trolley to the rear of the axle. The support plate tilts backward around the axle, utilizing the support assembly and the moving wheels to support the transfer trolley. This allows the movement of the precast grid beam to be achieved solely by manually applying pushing force to the trolley, replacing the manual handling of the precast grid beam and effectively reducing labor intensity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one embodiment of the device of this utility model.

[0018] Figure 2 This is a schematic diagram of another embodiment of the device of this utility model.

[0019] Figure 3 This is a front view structural diagram of one embodiment of the device of this utility model.

[0020] Figure 4 A schematic diagram of one embodiment of the regulating component.

[0021] Figure 5 This is a structural schematic diagram of another embodiment of the regulating component.

[0022] The meanings of the labels in the diagram are as follows: Support plate—1; Push handle—101; 2 movable wheels; 201 rotating shaft; Top support assembly—3; Storage board—301; Storage cavity—302; Movable plate—303; Spherical support wheel—304; Hydraulic telescopic rod—305; Horizontal plate—306; Sleeve body—307; Spherical wheel body—308; Support rod—401; Support wheel—402; Horizontal bar—403; Vertical bar—404; Lifting plate—5; Lifting rope—501; Lifting hook—502; Counterweight slot—6; Counterweight block—601; Electric actuator—602; Compression spring—603; Adjustment slot—604; Adjustment rod—605. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0024] like Figures 1-3 As shown, a transfer trolley for precast grid beams includes: Support plate 1; The movable wheel 2 is connected to the left and right sides of the support plate 1 via the rotating shaft 201; The hoisting plate 5 is set on the top of the support plate 1, and the front end is provided with a hoisting rope 501. The bottom of the hoisting rope 501 is provided with a hook 502 for suspending the precast grid beam. The top support assembly 3 is connected to the front side of the support plate 1 at one end and is used to support the ground at the other end. By extending the top support assembly, the support plate 1 is rotated around the pivot 201, which drives the front end of the hoisting plate 5 to move upward, thereby lifting the precast grid beam. The counterweight groove 6 is connected to the rear side of the support plate 1 and is perpendicular to the support plate 1. A counterweight block 601 is slidably disposed inside the groove. Adjustment component, used to adjust the position of counterweight 601 in counterweight groove 6 so that the center of gravity of the transfer trolley is located in front of or behind the rotating shaft 201. The support assembly, connected to the rear side of the support plate 1, is used to support the transfer trolley together with the moving wheels 2 when the center of gravity of the transfer trolley is located behind the pivot 201 and the transfer trolley tilts backward.

[0025] The main working process of this utility model is as follows: In the initial state, the position of the counterweight block 601 in the counterweight groove 6 is adjusted by the adjusting component so that the center of gravity of the transfer trolley is located in front of the rotating shaft of the moving wheel 2 (for ease of description, the direction of movement of the transfer trolley, i.e. the direction where the lifting rope 501 and the hook 502 are located, is taken as forward). At this time, by retracting the top support assembly 3, the support plate 1 tilts forward around the rotating shaft 201 of the moving wheel 2, and the lifting plate 5 is fixedly connected to the support plate 1 and set on the top of the support plate 1 so as to realize the descent of the lifting rope 501 and the hook 502 at the front end of the lifting plate 5, so as to facilitate the suspension of the prefabricated grid beam on the hook 502; Then, by extending the top support assembly 3, the support plate 1 rotates backward around the pivot 201 of the moving wheel 2, causing the support plate 1 to gradually return to a vertical state. At this time, the front end of the lifting plate 5 moves upward, and the precast grid beam is lifted using the lifting rope 501 and the hook 502. Then, by adjusting the component, the position of the counterweight block 601 in the counterweight groove 6 is adjusted, causing the center of gravity of the transfer trolley to move backward until the center of gravity passes the pivot 201 of the moving wheel and moves to the rear of the pivot 201. At this time, the support plate 1 will tilt backward, and the support assembly and the moving wheel 2 will share the weight and load of the moving trolley. At this time, the bottom end of the top support assembly 3 is off the ground or in contact with the ground but does not bear any load. Therefore, by using the device of this utility model to lift the precast grid beam, the subsequent transfer / transport process only requires manual pushing of the transfer trolley carrying the precast grid beam, which can conveniently transfer the precast grid beam from the slope walkway to the vicinity of the installation position, greatly reducing labor intensity and avoiding fatigue of workers, which would affect the accuracy and safety of the subsequent installation process.

[0026] It should be noted that, since the overall center of gravity changes during the supporting process of the top support component 3, the trolley carrying the precast grid beam will undergo a process of tilting from forward to backward. Therefore, the structure of the support component used to support the ground needs to be slightly higher than the bottom edge of the moving wheel 2. In order to reduce the impact on the support component during the process of the trolley tilting from forward to backward, which could cause the trolley to overturn, the height of the support component above the bottom edge of the moving wheel 2 should not be too large. The specific height difference should be adjusted according to the length of the lifting plate 5 and the actual situation of the center of gravity transfer.

[0027] As a preferred embodiment, such as Figure 1 and 3 As shown, the top support assembly 3 includes a storage plate 301 connected to the front side of the support plate 1; the storage plate 301 is inclined downward and has a storage cavity 302, a sliding movable plate 303 is provided in the storage cavity 302, and a spherical support wheel 304 is provided at the bottom of the movable plate 303. The top support assembly 3 also includes a hydraulic telescopic rod 305 that can slide and extend along the sliding direction of the movable plate 303. The piston rod end of the hydraulic telescopic rod 305 is fixedly connected to the movable plate 303, and the other end is fixedly connected to the outer wall of the storage plate 301.

[0028] This embodiment provides an alternative support component concept, specifically including a storage plate 301 with a storage cavity 302. A slidable movable plate 303 is provided within the storage cavity 302 of the storage plate 301. The storage plate 301 is fixedly connected to the front side of a support plate. The movable plate 303 is connected to the front side of the support plate 1 via the storage plate 301. A spherical support wheel 304 is provided at the bottom of the movable plate 303, so that when the movable plate 303 extends from the storage plate 301, it supports the support plate 1 by abutting against the ground via the spherical support wheel 304. It also includes a hydraulic telescopic rod 305. The extension and retraction of the hydraulic telescopic rod 305 causes the movable plate 303 to slide within the storage cavity 302, realizing the extension and retraction of the movable plate 303. This allows the support plate 1 to rotate around the pivot 201 of the movable wheel 2, thereby raising and lowering the suspension rope 501 and the hook 502. It should be noted that, in order to ensure that the movable plate 303 can slide smoothly in the storage cavity 302, a hydraulic telescopic rod 305 can be set on each side of the storage plate 301, so that the force on both sides of the movable plate 303 is even.

[0029] As a preferred embodiment, such as Figure 2 As shown, the top support assembly 3 includes a horizontal plate 306 connected to the front side of the support plate 1, and the front end of the horizontal plate 306 is connected to the storage plate 301; the storage plate 301 is inclined downward and has a storage cavity 302, and a sliding movable plate 303 is provided in the storage cavity 302, and a spherical support wheel 304 is provided at the bottom of the movable plate 303. The top support assembly 3 also includes a hydraulic telescopic rod 305 that can slide and extend along the sliding direction of the movable plate 303. The piston rod end of the hydraulic telescopic rod 305 is fixedly connected to the movable plate 303, and the other end is fixedly connected to the outer wall of the storage plate 301.

[0030] In this embodiment, the extension and retraction of the hydraulic telescopic rod 305 drives the movable plate 303 to slide within the storage cavity 302, thereby enabling the extension and retraction of the top support assembly 3 and allowing the support plate 1 to rotate around the pivot 201 of the movable wheel 2. Furthermore, by setting a horizontal plate 306 and fixing it to the front side of the support plate 1, the spherical support wheel 304 at the bottom of the movable plate 303 can be positioned further forward on the ground, ensuring overall force balance for the transfer trolley during the lifting and lowering of the hoisting plate 5. Additionally, the horizontal plate 306 increases the overall tilt angle of the movable plate 303 and the storage plate 301, bringing them closer to a vertical position. This allows the hydraulic telescopic rod 305 to more efficiently adjust the height of the front end of the hoisting plate 5 during extension and retraction, avoiding the situation where the movable plate 303 and the telescopic plate 301 have a smaller tilt angle (closer to a horizontal state), requiring a larger stroke of the hydraulic telescopic rod 305 to achieve the same lifting amplitude, thus reducing the stroke requirements of the hydraulic telescopic rod 305.

[0031] As a preferred embodiment, such as Figure 3 As shown, the spherical support wheel 304 includes a hemispherical sleeve 307, and a spherical wheel 308 is rotatably embedded inside the sleeve 307.

[0032] This embodiment provides a specific structure for a spherical support wheel 304. Specifically, it comprises a hemispherical sleeve 307 fixedly connected to a movable plate 303, with the opening of the sleeve 307 facing downwards. A spherical wheel 308 is rotatably embedded within the sleeve 307. Rotation is achieved through the cooperation between the sleeve 307 and the spherical wheel 308, allowing the spherical support wheel 304 to slide normally on the ground of the slope walkway. Furthermore, the combination of the hemispherical sleeve 307 and the spherical wheel 308 also allows for easy adjustment of the direction of movement by utilizing the circumferential rotation capability of the spherical wheel 308.

[0033] As a further embodiment, the inner wall of the hemispherical sleeve 307 is provided with a plurality of rotatable auxiliary balls, and the spherical wheel 308 is rotatably disposed inside the sleeve 307 and abuts against the auxiliary balls.

[0034] In this embodiment, by setting several rotatable auxiliary balls on the inner wall of the hemispherical sleeve 307, the friction between the spherical wheel 308 and the sleeve 307 is transformed from sliding friction into rolling friction between the spherical wheel 308 and the auxiliary balls. This avoids the spherical wheel 308 from being unable to rotate normally due to excessive friction between it and the sleeve 307 caused by the weight of the precast grid beam and the weight of the transfer trolley itself.

[0035] As a preferred embodiment, such as Figure 4As shown, the adjusting component includes a compression spring 603, one end of which is connected to the front wall of the counterweight groove 6 and the other end is connected to the front side of the counterweight block 601; the adjusting component also includes an electric push rod 602, one end of which is connected to the rear wall of the counterweight groove 6 and the other end is connected to a device for pushing against the rear side of the counterweight block 601.

[0036] In this embodiment, a technical concept for an adjusting component is provided. Specifically, the adjusting component includes a compression spring 603, one end of which is fixedly connected to the front wall of the counterweight groove 6, and the other end is fixedly connected to the front side of the counterweight block 601. That is, the compression spring 603 is disposed in the counterweight groove 6 on the side of the counterweight frame 601 near the support plate 1, and is used to push the counterweight block 601 away from the support plate 1. The adjusting component also includes an electric push rod 602, one end of which is fixedly connected to the rear wall of the counterweight groove 6, and the other end is connected to a device for resisting... The counterweight 601 is pushed towards the rear side to move it toward the support plate 1. When it is necessary to adjust the center of gravity to the front of the pivot of the moving wheel 2, the electric actuator 602 is extended to move the counterweight 601 forward, and the compression spring 603 contracts to suspend the precast grid beam on the hook 502. Then, the electric actuator 602 is retracted, and the compression spring 603 extends, pushing the counterweight 601 backward, that is, moving it away from the support plate 1, thereby shifting the center of gravity of the transfer trolley toward the rear of the pivot 201 of the moving wheel 2. This arrangement also ensures that the compression spring 603 is only compressed during the process of suspending and lowering the precast grid beam, avoiding failure caused by the compression spring 603 remaining in a compressed state for a long time. During this process, the electric actuator 602 is not connected to the counterweight 601. Instead, it is pushed by extending the electric actuator 602 against the rear side of the counterweight 601, ensuring that the contact position between the counterweight 601 and the counterweight groove 6 is the position where the counterweight 601 transfers gravity to the counterweight groove 6.

[0037] It should be noted that, since the lifting plate 5 itself has a certain length and weight, it is necessary to calculate the weight of the counterweight block 601 contained in the counterweight groove 6. This ensures that when the precast grid beam is not being lifted and the counterweight block 601 is at the foremost position of the counterweight groove 6, the downward torque in front of the rotating shaft 201 of the moving wheel 2 should be greater than the downward torque behind the rotating shaft 201 of the moving wheel 2 (assuming that the center of gravity of the lifting plate 5, counterweight block 601, and counterweight groove 6 are approximately at the midpoint), so as to ensure that the front end of the lifting plate 5 of the transfer trolley can descend normally. It is also necessary to ensure that when the precast grid beam is being lifted and the counterweight block 601 is at the rearmost position of the counterweight groove 6, the downward torque in front of the rotating shaft 201 of the moving wheel 2 should be less than the downward torque behind the rotating shaft 201 of the moving wheel 2, so as to ensure that when the center of gravity of the lifting plate 5 of the transfer trolley moves backward, the front end of the lifting plate 5 can move upward normally.

[0038] As a preferred embodiment, such as Figure 5 As shown, the adjusting component includes an adjusting groove 604 disposed on the side wall of the counterweight groove 6. The adjusting groove 604 is strip-shaped and perpendicular to the support plate 1. The side of the counterweight block 601 is provided with an adjusting rod 605 that passes through the adjusting groove 604. The adjusting rod 605 has external threads and is also fitted with a nut that presses the side wall of the counterweight groove 6 from the outside.

[0039] In this embodiment, another technical concept for the adjusting component is provided. Specifically, a strip-shaped groove perpendicular to the support plate 1 is provided on the side wall of the counterweight groove 6 as an adjusting groove 604. An adjusting rod 605 extending horizontally out of the adjusting groove 604 is fixedly connected to the side of the counterweight block 601. The position of the counterweight block 601 is adjusted by manually pushing it, and then the position of the counterweight block 601 is fixed by tightening the nut to increase the friction between the nut and the outer wall of the counterweight groove 6. This simplifies the structure of the adjusting component, reduces reliance on external machinery, and lowers the cost of the transfer trolley. To facilitate pushing, a sliding counterweight frame can be provided in the counterweight groove 6. The counterweight block 601 can be selected from multiple small gravel blocks or heavy blocks, and the counterweight frame and gravel blocks or heavy blocks are placed together in the counterweight groove 6, with the gravel blocks or heavy blocks and the counterweight frame serving as the counterweight block 601, thus making the selection of the counterweight block 601 more convenient.

[0040] In a preferred embodiment, the support assembly includes two support rods 401 connected to the left and right sides of the rear side of the support plate 1; the two support rods 401 converge at one point and are connected to a support wheel 402, the bottom edge of the support wheel 402 being higher than the bottom edge of the movable wheel 2.

[0041] This embodiment provides a support component structure, specifically including two support rods 401 fixedly connected to the left and right sides of the rear side of the support plate 1. The two support rods 401 converge at one point and are fixedly connected to a rotatable support wheel 402. The bottom edge of the support wheel 402 is higher than the bottom edge of the movable wheel 2. Thus, during the process of the top support component 3 extending and supporting the support plate 1, the overall center of gravity of the transfer trolley carrying the prefabricated grid beam gradually moves backward as the top support component 3 supports and the counterweight block 601 moves, until it is transferred to the rear of the rotating shaft 201. At this time, the entire transfer trolley will tilt backward, so that the weight of the prefabricated grid beam and the weight of the transfer trolley itself are shared by the movable wheel 2 and the support wheel 402. At this time, the top support component 3 is in a suspended state or in contact with the ground but not bearing any load, and only serves to prevent the transfer trolley from tilting forward due to the influence of ground undulations. Thus, a stable hoisting process for the precast grid beam is achieved. Then, the transport trolley is manually transferred to the precast grid beam's installation position. By moving the counterweight 601 forward, the center of gravity of the transport trolley returns to the front of the rotating axle 201 of the moving wheel 2, allowing the top support component 3 to bear force again. The support component becomes suspended or in contact with the ground but not bearing force. By shortening the top support component 3, the precast grid beam can be lowered to the installation position, thus completing the entire transport process of the precast grid beam.

[0042] As a preferred embodiment, such as Figure 1 As shown, the support assembly includes two "L"-shaped support rods 401. Each support rod 401 includes a horizontal bar 403 and a vertical bar 404 connected to the bottom of the horizontal bar 403. A support wheel 402 is provided at the bottom of the vertical bar 404, and the bottom edge of the support wheel 402 is higher than the bottom edge of the movable wheel 2. The horizontal bars 403 of the two support rods 401 are respectively connected to the left and right sides of the rear side of the support plate 1.

[0043] This embodiment provides another support component structure. Compared with the previous embodiment, the difference is that the support rod 401 is "L" shaped, including horizontal rods 403 fixedly connected to the left and right sides of the rear side of the support plate 1, and vertical rods 404 fixedly connected to the bottom of the horizontal rods 403. The support wheel 402 is set at the bottom of the vertical rod 404. In this way, during the support process, the overall support of the transfer trolley can be changed from three-point support in the previous embodiment to four-point support, which improves the stability of the transfer trolley in the process of transporting the precast grid beam, and reduces the pressure on a single support point, avoiding excessive pressure at a single point that could cause it to sink into the slope walkway and cause poor transfer.

[0044] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, the rear side of the support plate 1 is also provided with a push handle 101.

[0045] This embodiment provides a structure that facilitates pushing the transfer trolley. Specifically, it is a push handle 101 that is fixedly connected to the rear side of the support plate 1. In the actual transfer process, the push handle 101 can be used to apply force to the support plate 1, and it can also be used to cooperate with the top support assembly 3 to realize the lifting process of the hoisting plate 5 by pressing down or lifting the push handle 101.

[0046] The terms "connection" and "fixing" appearing in this utility model description can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0047] In the description of this utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used only to indicate the orientation or positional relationship for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A transfer trolley for precast grid beams, characterized in that, include: Support plate (1); The movable wheel (2) is connected to the left and right sides of the support plate (1) via a pivot (201); The hoisting plate (5) is set on the top of the support plate (1), and the front end is provided with a hoisting rope (501). The bottom of the hoisting rope (501) is provided with a hook (502) for suspending the precast grid beam. The top support assembly (3) is connected to the front side of the support plate (1) at one end and is used to support the ground at the other end. By extending the top support assembly, the support plate (1) is rotated around the pivot (201), which drives the front end of the hoisting plate (5) to move upward to lift the precast grid beam. The counterweight groove (6) is connected to the rear side of the support plate (1), is perpendicular to the support plate (1), and has a counterweight block (601) slidably installed inside. Adjustment component, used to adjust the position of the counterweight (601) in the counterweight groove (6) so that the center of gravity of the transfer trolley is located in front of the rotating shaft (201) or behind the rotating shaft (201); The support assembly, connected to the rear side of the support plate (1), is used to support the transfer trolley together with the moving wheels (2) when the center of gravity of the transfer trolley is located behind the pivot (201) and the transfer trolley tilts backward.

2. The transfer trolley for prefabricated grid beams as described in claim 1, characterized in that, The top support assembly (3) includes a storage plate (301) connected to the front side of the support plate (1); the storage plate (301) is inclined downward and has a storage cavity (302), a sliding movable plate (303) is provided in the storage cavity (302), and a spherical support wheel (304) is provided at the bottom of the movable plate (303). The top support assembly (3) also includes a hydraulic telescopic rod (305) that can slide and extend along the sliding direction of the movable plate (303). The piston rod end of the hydraulic telescopic rod (305) is fixedly connected to the movable plate (303), and the other end is fixedly connected to the outer wall of the storage plate (301).

3. The transfer trolley for prefabricated grid beams as described in claim 1, characterized in that, The top support assembly (3) includes a horizontal plate (306) connected to the front side of the support plate (1), and the front end of the horizontal plate (306) is connected to the storage plate (301); the storage plate (301) is inclined downward and has a storage cavity (302), and a sliding movable plate (303) is provided in the storage cavity (302), and a spherical support wheel (304) is provided at the bottom of the movable plate (303). The top support assembly (3) also includes a hydraulic telescopic rod (305) that can slide and extend along the sliding direction of the movable plate (303). The piston rod end of the hydraulic telescopic rod (305) is fixedly connected to the movable plate (303), and the other end is fixedly connected to the outer wall of the storage plate (301).

4. A transfer trolley for prefabricated grid beams as described in claim 2 or 3, characterized in that, The spherical support wheel (304) includes a hemispherical sleeve (307) in which a spherical wheel (308) is rotatably embedded.

5. The transfer trolley for precast grid beams as described in claim 4, characterized in that, The inner wall of the hemispherical sleeve (307) is provided with a number of rotatable auxiliary balls, and the spherical wheel (308) is rotatably disposed inside the sleeve (307) and abuts against the auxiliary balls.

6. The transfer trolley for prefabricated grid beams as described in claim 1, characterized in that, The adjusting component includes a compression spring (603), one end of which is connected to the front wall of the counterweight groove (6) and the other end is connected to the front side of the counterweight block (601); the adjusting component also includes an electric push rod (602), one end of which is connected to the rear wall of the counterweight groove (6) and the other end is connected to the rear side of the counterweight block (601).

7. The transfer trolley for prefabricated grid beams as described in claim 1, characterized in that, The adjusting component includes an adjusting groove (604) provided on the side wall of the counterweight groove (6), the adjusting groove (604) is strip-shaped and perpendicular to the support plate (1); the side of the counterweight block (601) is provided with an adjusting rod (605) that passes through the adjusting groove (604), the adjusting rod (605) has external threads, and the adjusting rod (605) is also fitted with a nut that presses the side wall of the counterweight groove (6) from the outside.

8. The transfer trolley for prefabricated grid beams as described in claim 1, characterized in that, The support assembly includes two support rods (401) connected to the left and right sides of the rear side of the support plate (1); the two support rods (401) converge at one point and are connected to a support wheel (402), the bottom edge of the support wheel (402) being higher than the bottom edge of the moving wheel (2).

9. The transfer trolley for prefabricated grid beams as described in claim 1, characterized in that, The support assembly includes two "L"-shaped support rods (401). Each support rod (401) includes a horizontal bar (403) and a vertical bar (404) connected to the bottom of the horizontal bar (403). A support wheel (402) is provided at the bottom of the vertical bar (404). The bottom edge of the support wheel (402) is higher than the bottom edge of the moving wheel (2). The horizontal bars (403) of the two support rods (401) are respectively connected to the left and right sides of the rear side of the support plate (1).

10. The transfer trolley for prefabricated grid beams as described in claim 1, characterized in that, The rear side of the support plate (1) is also connected to a push handle (101).

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