A steel bar conveying trolley

Abstract

The utility model relates to steel bar transportation technical field, concretely relates to a steel bar transportation dolly, include: the article box for bearing steel bar, the article box bottom installation at least four mobile wheels and at least four lockable mobile mechanism, mobile wheel links to each other with lockable mobile mechanism to realize the movement, lockable mobile mechanism can retract mobile wheel and ground fixed, the number is identical with mobile wheel, still include top handle, bottom handle, front door panel, the support seat of lockable mobile mechanism etc, the slipper of mobile wheel etc, locking plate, protective sleeve, buffer mechanism, second electric telescopic cylinder and rear door panel, the present application solves how to improve the problem of the stability of steel bar transportation dolly.

Description

Technical Field

[0001] This utility model relates to the field of steel bar transportation technology, specifically to a steel bar transportation trolley. Background Technology

[0002] In the field of steel strip processing, the processing flow typically includes key technological steps such as uncoiling, straightening, cross-cutting, and longitudinal cutting. After the above series of processes, the steel strip is processed into several steel bars. To ensure the smooth progress of subsequent processing steps, these steel bars need to be transferred to the designated processing area by transport trolleys.

[0003] However, in actual transfer processes, the transport trolley needs to stop promptly according to the on-site processing rhythm or location requirements, and it must be reliably locked after stopping to prevent displacement. Related technologies for transport trolleys are disclosed in the Chinese patent database, such as a roller-type transport trolley with publication number CN205633854U.

[0004] Although the aforementioned prior art (CN205633854U) achieves cart locking through the self-locking function of the caster wheels, this solution has obvious shortcomings in the steel bar transportation scenario: under the load of steel bars, the contact area between the caster wheels and the ground is small, and the self-locking structure is prone to loosening and slipping due to concentrated force, making it unable to lock stably. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a steel bar transport trolley that, compared with the prior art, solves the problem of how to improve the stability of the steel bar transport trolley.

[0006] This utility model discloses a steel bar transport trolley, including a storage box for carrying steel bars, at least four movable wheels installed at the bottom of the storage box for realizing the movement function of the storage box and connected to a lockable movable mechanism, and at least four lockable movable mechanisms installed at the bottom of the storage box, which can retract the movable wheels and contact the ground after being retracted to fix the position of the storage box; the number of lockable movable mechanisms is equal to the number of movable wheels, and each lockable movable mechanism is connected to the adjacent movable wheel.

[0007] The optimized steel bar transport trolley also includes a top handle attached to the top edge of the storage box for the operator to hold and push, pull or move the storage box, and a bottom handle attached to the bottom side of the storage box for easy operation or movement of the storage box from the bottom.

[0008] The optimized design features an opening on the front of the storage box for easy removal of the steel strap. A front door panel is connected to the opening, and a front handle is installed on the front door panel for opening and closing the front door panel or to assist in moving the storage box.

[0009] Specifically, the lockable moving mechanism includes a support base, which is fixedly connected to the bottom of the storage box. A first electric telescopic cylinder is connected to the support base, and the piston rod end of the first electric telescopic cylinder is connected to a wedge block for driving the wedge block to move. A sliding groove is provided on the support base to limit the direction of movement of the wedge block. The wedge block is used to retract the moving wheel or unlock the moving wheel.

[0010] Specifically, the movable wheel includes a sliding rod that slidably passes through the support base and is slidably connected to one corner of the storage box; a telescopic spring is connected between the top of the sliding rod and the inside of the storage box to drive the sliding rod and roller to return to their original positions; the roller is located at the bottom of the sliding rod and can move up and down with the sliding rod; when the top of the wedge-shaped block's slope contacts the roller, the roller and the sliding rod are lifted upwards, the telescopic spring is stretched, and the roller is separated from the ground; when the wedge-shaped block is separated from the roller, the telescopic spring, due to deformation force, drives the sliding rod and roller to return to their original positions, and the roller passes through the support base's groove with its bottom lower than the bottom of the support base.

[0011] The optimized steel bar transport trolley also includes a locking mechanism, which is a locking plate installed on the front door panel. When the first electric telescopic cylinder drives the wedge block to push the roller and sliding rod upward and the roller is separated from the ground, the sliding rod locks with the locking plate. When the first electric telescopic cylinder drives the wedge block to disengage from the roller, the telescopic spring drives the sliding rod and roller to reset, and the roller contacts the ground, the sliding rod is unlocked from the locking plate.

[0012] The optimized design features a protective sleeve around the telescopic spring, which protects the spring. The top of the sliding rod can movably extend through the top of the protective sleeve.

[0013] The optimized storage box features a cushioning mechanism at its bottom, comprising two limiting rails positioned on the left and right sides of the box to guide and limit the sliding of the base plate. The base plate is slidably connected to the limiting rails on both sides and can slide along the extension direction of the limiting rails. The two ends of the cushioning spring are connected to the support plate and the base plate respectively, forming an elastic cushioning structure. The support plate is connected to the base plate via the cushioning spring and is used to place steel bars, the weight of which is transferred to the cushioning spring through the support plate.

[0014] The optimized steel bar transport trolley also includes a second electric telescopic cylinder, which is fixed to the bottom of the storage box. The output shaft of the second electric telescopic cylinder is fixed to the base plate, which can drive the base plate to slide along the limit rail, thereby moving the bearing plate and steel bars out of the storage box.

[0015] The optimized steel bar transport trolley also includes a rear door panel, which is located at the back of the storage box and is used to retrieve and place steel bars that have been left inside the storage box.

[0016] The beneficial effects of this utility model are as follows: This application addresses the problem of improving the stability of steel bar transport trolleys. Locking is achieved through direct contact between the support base of the lockable moving mechanism and the ground. Compared to traditional self-locking casters, this provides a larger contact area and more even force distribution, effectively preventing loosening and slippage. It stabilizes the position of the storage box, ensures the accuracy of steel bar stacking, eliminates safety hazards caused by trolley displacement, and meets the stability requirements for steel bar transfer and subsequent processing. The coordinated design of the moving wheels and the lockable moving mechanism allows for rapid switching between a moving state (rollers in contact with the ground) and a locked state (support base in contact with the ground), with timely action response. This ensures both the mobility of steel bar transfer and timely stopping and locking, adapting to the rhythmic demands of steel strip processing workshops. The reasonable structural design of the lockable moving mechanism and moving wheels, along with the stable operation of the wedge blocks driven by the electric telescopic cylinder, and the convenient operation with top, bottom, and front handles, ensures long-term adaptability to complex workshop conditions and high reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the steel bar transport trolley of this utility model.

[0018] Figure 2 This is a schematic diagram of the installation structure of the lockable moving mechanism of this utility model.

[0019] Figure 3 This is a schematic diagram of the installation structure of the locking mechanism of this utility model.

[0020] Figure 4 This is a diagram showing the usage state of the locking structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the installation structure of the protective sleeve of this utility model.

[0022] Figure 6 This is a schematic diagram of the installation structure of the buffer mechanism of this utility model.

[0023] Figure 7 This is a three-dimensional structural diagram of the buffer mechanism of this utility model.

[0024] Figure 8 This is a schematic diagram of the installation structure of the second electric telescopic cylinder of this utility model.

[0025] Figure 9 This is a diagram showing the fit between the sliding rod and the support base of this utility model.

[0026] In the diagram, 1. Top handle; 2. Storage box; 3. Casters; 4. Bottom handle; 5. Sliding rod; 6. Telescopic spring; 7. Front door panel; 8. Slide track; 9. Roller; 10. First electric telescopic cylinder; 11. Support base; 12. Wedge block; 13. Locking plate; 14. Rear door panel; 15. Protective cover; 16. Limiting rail; 17. Base plate; 18. Bearing plate; 19. Buffer spring; 20. Second electric telescopic cylinder. Detailed Implementation

[0027] To clearly understand the technical solution of this application, the following will describe in detail a steel bar transport trolley provided by this application with reference to specific embodiments and accompanying drawings.

[0028] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and claims of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one” and “one or more” refer to one, two, or more than two.

[0029] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "one embodiment," "some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0030] Example 1: This example provides a steel bar transport trolley, referencing... Figure 1The diagram shows a structural schematic of this application. As can be seen from the diagram, the transport trolley includes a storage box 2, which is the main body of the overall structure and is used to carry items (i.e., steel bars). A top handle 1 is connected to the top edge of the storage box 2 for the operator to hold and push, pull, or move the storage box 2. A bottom handle 4 is connected to the bottom side of the storage box 2, facilitating operation or movement of the storage box 2 from the bottom. Four movable wheels 3 are connected to a lockable movable mechanism and installed at the bottom of the storage box 2 to enable the movement of the storage box 2. The four lockable movable mechanisms are installed at the bottom of the storage box 2. Each lockable movable mechanism is connected to an adjacent movable wheel 3. The lockable movable mechanism can retract the movable wheels 3 at the bottom of the storage box 2. After the movable wheels 3 are retracted, the lockable movable mechanism directly contacts the ground, supporting the storage box 2 on the ground, and also has a locking function to fix the position of the storage box 2. As an optimization, in order to make it easier to remove the steel strip from the storage box 2, an opening is provided on the front of the storage box 2, and a front door panel 7 is connected to the opening; a front handle is installed on the front door panel 7, and the front handle is used to open and close the front door panel 7 or to assist in moving the storage box 2.

[0031] For details, please refer to Figure 2 The diagram shows the installation structure of the lockable movable mechanism. As can be seen from the diagram, the lockable movable mechanism includes a support base 11, which is fixedly connected to the bottom of the storage box 2, providing an installation carrier for the entire lockable movable mechanism and the entire movable wheel 3. A first electric telescopic cylinder 10 is connected to the support base 11, and the piston rod end is connected to a wedge block 12 for driving the wedge block 12 to move. The wedge block 12 is set in the slide groove 8 of the support base 11, and the slide groove 8 limits the direction of movement of the wedge block 12. The wedge block 12 is connected to the piston rod of the first electric telescopic cylinder 10 and can slide along the slide groove 8 under the drive of the first electric telescopic cylinder 10.

[0032] The movable wheel 3 includes a sliding rod 5, which is slidably connected to a through support base 11 and slidably attached to one corner of the storage box 2. The top of the sliding rod 5 is connected to the interior of the storage box 2 by a telescopic spring 6, which is used to drive the sliding rod 5 and the roller 9 to reset. The roller 9 is located at the bottom of the sliding rod 5 and can move up and down with the sliding rod 5. When the top of the wedge block 12 contacts the roller 9, the roller 9 and the sliding rod 5 are lifted upward, the telescopic spring 6 is stretched, the roller 9 is separated from the ground, and the support base 11 contacts the ground to support the storage box 2. When the wedge block 12 is separated from the roller 9, the telescopic spring 6 drives the sliding rod 5 and the roller 9 to reset due to deformation force. The roller 9 passes through the groove 8 of the support base 11 and its bottom is lower than the bottom of the support base 11, and contacts the ground to realize the movement of the storage box 2.

[0033] The general working principle of this application is as follows: Step 1 (Transfer Stage): When steel bars need to be transferred, the first electric telescopic cylinder 10 in the locking mechanism drives the wedge block 12 to slide along the groove 8 of the support base 11, causing the wedge block 12 to disengage from the roller 9 of the moving wheel 3. At this time, the telescopic spring 6 of the moving wheel 3, due to its own deformation force, drives the sliding rod 5 and the roller 9 to reset. The roller 9 passes through the groove 8 of the support base 11, and its bottom is lower than the bottom of the support base 11 and in contact with the ground. The operator can push or pull the storage box 2 through the top handle 1, bottom handle 4, or front handle to realize the transfer and movement of the steel bars using the roller 9.

[0034] Step 2 (Stop and Lock Stage): When it is necessary to stop and lock the transport trolley in time, the first electric telescopic cylinder 10 drives the wedge block 12 to slide along the slide groove 8, so that the top of the slope of the wedge block 12 contacts the roller 9; under the push of the wedge block 12, the roller 9 and the sliding rod 5 are lifted upward, the telescopic spring 6 is stretched, the roller 9 is separated from the ground, and the support seat 11 directly contacts the ground, thereby supporting and locking the storage box 2 on the ground, achieving reliable stopping.

[0035] Based on the above connection relationships, the beneficial effects of this application are as follows: This application solves the problem of how to improve the stability of the steel bar transport trolley; the locking mechanism achieves locking by having the support seat 11 of the lockable moving mechanism directly contact the ground, which, compared with the traditional universal wheel self-locking, has a larger contact area and more uniform force distribution, effectively avoiding loosening and slippage, and can stably fix the position of the storage box 2, ensuring the accuracy of steel bar stacking, eliminating safety hazards caused by trolley displacement, and meeting the stability requirements of steel bar transfer and subsequent processing; the coordinated design of the moving wheel 3 and the lockable moving mechanism can quickly switch between the moving state (roller 9 in contact with the ground) and the locked state (support seat 11 in contact with the ground), with timely action response, ensuring both the mobility of steel bar transfer and timely stopping and locking, adapting to the rhythm requirements of the steel strip processing workshop; the structural design of the lockable moving mechanism and the moving wheel 3 is reasonable, the electric telescopic cylinder drives the wedge block 12 for stable action, and with the top, bottom and front handles, operation is convenient, and the overall structure can adapt to the complex working conditions of the workshop for a long time, with high reliability.

[0036] In Example 2, during the transportation of steel bars, the front door panel 7 needs to be locked to the storage box 2 when loading the steel bars to ensure their safety during storage. Conversely, the front door panel 7 needs to be unlocked from the storage box 2 when unloading the steel bars for easy access. To address this need, this example designs a linkage locking scheme: when the roller 9 is out of contact with the ground (when loading the steel bars), the locking mechanism engages with the locking mechanism on the front door panel 7; when the roller 9 is in contact with the ground (when unloading the steel bars), the locking mechanism disengages from the locking mechanism on the front door panel 7.

[0037] Specifically, refer to Figure 3-4 ,in, Figure 3The diagram shown is a schematic of the installation structure of the locking mechanism, while Figure 4 The diagram shows the usage state of the locking structure. As can be seen from the diagram, the sliding rod 5 of the lockable moving mechanism cooperates with the locking mechanism (locking plate 13) of the front door panel 7. When in the stop and lock stage of loading steel bars, the first electric telescopic cylinder 10 drives the wedge block 12 to push the roller 9 and the sliding rod 5 upward. The roller 9 disengages from the ground, and the support seat 11 touches the ground to support the storage box 2. At this time, the sliding rod 5 and the locking mechanism of the front door panel 7 are locked, stabilizing the front door panel 7 on the storage box 2 and ensuring the structural stability when loading steel bars. When in the moving and transferring stage of unloading steel bars, the first electric telescopic cylinder 10 drives the wedge block 12 to disengage from the roller 9. The telescopic spring 6 drives the sliding rod 5 and the roller 9 to reset. The roller 9 touches the ground. At this time, the locking mechanism of the sliding rod 5 and the front door panel 7 is unlocked, and the operator can open the front door panel 7 through the front handle for easy unloading of steel bars.

[0038] In Example 3, during long-term use of the steel bar transport trolley, the telescopic spring 6 is easily damaged by the scraping and squeezing of the steel bars, directly causing the moving wheel 3 to fail to return to its normal position, severely affecting the trolley's movement and locking functions. To address this issue, refer to... Figure 5 The schematic diagram of the installation structure of the protective sleeve 15 shown in the figure illustrates an innovative protective scheme proposed in this embodiment: a protective sleeve 15 is installed around the telescopic spring 6, and the top of the sliding rod 5 can be movably inserted through the top of the protective sleeve 15. This design not only builds a "safety barrier" for the telescopic spring 6, effectively preventing damage to it caused by the steel bar, but also ensures the normal reset action of the moving wheel 3, allowing the steel bar transport trolley to maintain stable and reliable performance under complex working conditions.

[0039] Example 4: During the transportation of steel bars, if the bottom of the storage box 2 lacks a cushioning design, the steel bars are prone to impact and deformation during transfer, start-up, stopping, or bumping, which affects the processing accuracy of the steel bars and may shorten their service life. To solve this problem, this example proposes an optimized solution: a cushioning mechanism is installed at the bottom of the storage box 2 to cushion and protect the steel bars, reduce impact damage during transportation, ensure the quality of the steel bars, and meet the stringent accuracy requirements of subsequent processing.

[0040] For details, please refer to Figure 6-7 ,in, Figure 6 The diagram shown is a schematic of the installation structure of the buffer mechanism, while Figure 7The diagram shows a three-dimensional structural schematic of the buffer mechanism. As can be seen from the two diagrams above, the buffer mechanism includes two limiting rails 16, which are respectively set on the left and right sides of the storage box 2, providing guidance and limiting for the sliding of the base plate 17. The base plate 17 is slidably connected to the limiting rails 16 on both sides and can slide along the extension direction of the limiting rails 16. The two ends of the buffer spring 19 are respectively connected to the support plate 18 and the base plate 17 to form an elastic buffer structure. The support plate 18 is connected to the base plate 17 through the buffer spring 19. The support plate 18 is used to place steel bars, and the weight of the steel bars is transmitted to the buffer spring 19 through the support plate 18. The buffer spring 19 achieves the buffer function through its own elastic deformation.

[0041] In Example 5, during the use of the steel bar transport trolley, when the front door panel 7 is open, relying solely on manual labor to remove the buffer mechanism and the steel bars above it from the storage box 2 is not only inefficient but may also damage the steel bars due to operational inconvenience. To solve this problem, this embodiment further designs a pushing mechanism, namely the second electric telescopic cylinder 20. (Reference) Figure 8 The diagram shows the installation structure of the second electric telescopic cylinder 20, which is fixed to the bottom of the storage box 2, and its output shaft is fixed to the base plate 17. When it is necessary to quickly remove the buffer mechanism and the steel bars above it from the storage box 2, the second electric telescopic cylinder 20 can drive the base plate 17 to slide along the limiting rail 16, thereby driving the bearing plate 18 and the steel bars to move out quickly, achieving efficient and convenient retrieval and placement of the steel bars. On the other hand, a small number of steel bars may fall off the bearing plate 18 and remain inside the storage box 2. Therefore, as... Figure 4 As shown, a rear door panel 14 can be installed on the back of the storage box 2 to facilitate the removal of some steel bars.

[0042] The steel bar transport trolley in this application is essentially a unit for carrying and storing steel bars, rather than a long-distance transfer tool; long-distance, heavy-load transfer processes within the workshop are completed by specialized equipment such as forklifts, and the trolley's own wheels do not bear the main transfer function.

[0043] After the steel bars are placed in storage box 2, if they need to be stored for a long time or await forklift transport, the locking and moving mechanism can be activated. The rollers 9 retract, the support base 11 touches the ground to bear the weight of the entire vehicle, and at the same time, the sliding rod 5 moves up to cooperate with the locking plate 13 to lock the front door panel 7. In this state, the front door panel 7 is firmly closed, which can prevent the steel bars from slipping during storage and forklift transport, fully meeting safety and protection requirements.

[0044] After the forklift transports the trolley to the unloading area and places it on the ground, the locking mechanism activates, the wedge block 12 disengages from the roller 9, and the roller 9 extends downwards; simultaneously, the support base 11 moves down, releasing its lock from the locking plate 13, allowing the front door panel 7 to open freely. At this point, the operator can open the front door panel 7 and use the rolling function of the roller 9 to slightly drag the trolley, evenly spreading the steel bars during unloading to prevent them from piling up in one place. During this stage, the front door panel 7 needs to remain open to coordinate with the unloading action; therefore, being in the unlocked state perfectly meets the operational requirements.

[0045] The stretched telescopic spring 6 releases its deformation energy, generating a downward restoring force that drives the sliding rod 5 and the roller 9 downward. The weight of the steel bars loaded in the storage box 2 is transmitted downward through the storage box 2 body and the telescopic spring 6, exerting downward pressure on the sliding rod 5 and further pushing the roller 9 downward.

[0046] The core function of roller 9 is to assist operators in dragging the trolley short distances during the unloading phase, rather than bearing the weight of the entire vehicle for long-distance travel. When roller 9 is extended, only a slight protrusion at the bottom is needed to provide rolling guidance and reduce dragging resistance, fully meeting the requirements for short-distance paving and unloading, without needing to meet the load-bearing requirement of "supporting the heavy-load movement of the entire vehicle".

Claims

1. A steel bar transport trolley, characterized in that: It includes a storage box for supporting steel bars, at least four movable wheels installed at the bottom of the storage box for enabling the storage box to move and connected to a lockable movable mechanism, and at least four lockable movable mechanisms installed at the bottom of the storage box, which can retract the movable wheels and contact the ground after being retracted to fix the position of the storage box; the number of lockable movable mechanisms is equal to the number of movable wheels, and each lockable movable mechanism is connected to the adjacent movable wheel.

2. The steel bar transport trolley according to claim 1, characterized in that: The steel bar transport trolley also includes a top handle attached to the top edge of the storage box for operators to hold and push, pull or move the storage box, and a bottom handle attached to the bottom side of the storage box for easy operation or movement of the storage box from the bottom.

3. The steel bar transport trolley according to claim 1, characterized in that: The front of the storage box has an opening for easy removal of the steel strap. A front door panel is connected to the opening, and a front handle is installed on the front door panel. The front handle is used to open and close the front door panel or to assist in moving the storage box.

4. The steel bar transport trolley according to claim 1, characterized in that: The lockable moving mechanism includes a support base, which is fixedly connected to the bottom of the storage box. A first electric telescopic cylinder is connected to the support base, and the piston rod end of the first electric telescopic cylinder is connected to the wedge block for driving the wedge block to move. The slide is set on the support base to limit the movement direction of the wedge block; the wedge block is used to retract the moving wheel or unlock the moving wheel.

5. The steel bar transport trolley according to claim 4, characterized in that: The movable wheel includes a sliding rod that slidably passes through the support base and is slidably connected to one corner of the storage box; a telescopic spring is connected between the top of the sliding rod and the inside of the storage box to drive the sliding rod and roller to return to their original positions; the roller is located at the bottom of the sliding rod and can move up and down with the sliding rod; when the top of the wedge-shaped block's slope contacts the roller, the roller and the sliding rod are lifted upwards, the telescopic spring is stretched, and the roller is disengaged from the ground; when the wedge-shaped block disengages from the roller, the telescopic spring, due to deformation force, drives the sliding rod and roller to return to their original positions, and the roller passes through the support base's groove with its bottom lower than the bottom of the support base.

6. The steel bar transport trolley according to claim 4, characterized in that: The steel bar transport trolley also includes a locking mechanism, which is a locking plate installed on the front door panel. When the first electric telescopic cylinder drives the wedge block to push the roller and sliding rod upward and the roller is separated from the ground, the sliding rod locks with the locking plate. When the first electric telescopic cylinder drives the wedge block to disengage from the roller, the telescopic spring drives the sliding rod and roller to reset, and the roller contacts the ground, the sliding rod is unlocked from the locking plate.

7. The steel bar transport trolley according to claim 5, characterized in that: The telescopic spring is surrounded by a protective sleeve to protect it, and the top of the sliding rod can be movably inserted through the top of the protective sleeve.

8. The steel bar transport trolley according to claim 1, characterized in that: The bottom of the storage box is equipped with a buffer mechanism, which includes two limiting rails. The two limiting rails are respectively set on the left and right sides inside the storage box, providing guidance and limiting for the sliding of the bottom plate. The bottom plate is slidably connected to the limiting rails on both sides and can slide along the extension direction of the limiting rails. The two ends of the buffer spring are respectively connected to the support plate and the bottom plate to form an elastic buffer structure. The support plate is connected to the bottom plate through the buffer spring. The support plate is used to place steel bars, and the weight of the steel bars is transferred to the buffer spring through the support plate.

9. The steel bar transport trolley according to claim 8, characterized in that: It also includes a second electric telescopic cylinder, which is fixed to the bottom of the storage box. The output shaft of the second electric telescopic cylinder is fixed to the base plate, which can drive the base plate to slide along the limit rail, thereby moving the bearing plate and steel bars out of the storage box.

10. The steel bar transport trolley according to claim 1, characterized in that: It also includes a rear door panel, which is located at the back of the storage box and is used to retrieve or place any steel bars left inside the storage box.

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