A rolling mill transport trolley limiting device

Abstract

The utility model relates to the field of steel rolling production technology, concretely is a kind of steel rolling workshop transport trolley limiting device, including work plate, the upper surface of work plate is symmetrically provided with buffer assembly, the inside of buffer assembly is provided with the detection mechanism for detecting vehicle position.When transport trolley rushes to limit end, buffer pad first contacts with trolley, and initial impact energy is quickly absorbed by the elastic deformation of itself, reduces the rigid friction of trolley body and buffer plate, avoids the surface scratch damage of car body, then the residual impact force of trolley promotes buffer plate compression buffer spring, and spring generates reverse elastic force by virtue of excellent elasticity, further offsets inertia impact force, completely avoids the hard collision of trolley and device, track, prevents track deformation, device component fracture.Simultaneously, double buffering greatly weakens impact vibration, avoids the material such as billet on car to slide down due to violent shaking, and all-round guarantee equipment intact and transfer safety.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling production technology, specifically a limiting device for a transport trolley in a steel rolling workshop. Background Technology

[0002] In the steel rolling mill production process, the transport trolley, as the core equipment for transferring materials such as billets and rolled products, needs to frequently travel back and forth between various workstations along a fixed path. The precise control of its running trajectory directly affects production efficiency and operational safety. To prevent the trolley from derailing due to operational errors or sudden braking system malfunctions, limit devices are typically installed at the ends of the track to forcibly constrain the trolley's travel, reducing the risk of accidents such as equipment collisions and material spillage. This makes the limit device a critical component for ensuring safe production in the steel rolling mill.

[0003] However, existing trolley limit devices in steel rolling workshops generally lack buffer design. Most devices rely solely on mechanical blocks or single switch components to achieve rigid limiting. When the trolley rushes toward the limit end at high speed, a rigid collision easily occurs between the device and the trolley. This unbuffered contact not only causes severe impact on the trolley body and track ends, leading to component deformation, increased wear, and shortened equipment lifespan, but may also cause the trolley to derail due to excessive impact force, or even cause steel billets and rolled materials on the trolley to slip off, resulting in secondary safety accidents and seriously threatening the workshop's production order and personnel safety.

[0004] Therefore, we propose a limiting device for transport trolleys in steel rolling workshops. Utility Model Content

[0005] One of the technical problems this application aims to solve is that existing limit devices for transport trolleys in steel rolling workshops generally lack buffer design.

[0006] To address the aforementioned technical problems, this application provides a limiting device for a transport trolley in a steel rolling workshop, comprising a work plate, with buffer components symmetrically arranged on the upper surface of the work plate. The buffer components contain a detection mechanism for detecting the vehicle's position, and a limiting mechanism for limiting the transport trolley is provided on one side of the buffer components. The buffer components include:

[0007] A limiting groove is formed on the upper surface of the working plate;

[0008] Mounting plate, which is fixedly connected to the upper surface of the working plate;

[0009] A buffer spring, which is fixedly mounted on the surface of the mounting plate;

[0010] A buffer plate is fixedly connected to one end of a buffer spring, and a buffer pad is adhered to the surface of the buffer plate.

[0011] In some embodiments, the testing facility includes:

[0012] Mounting bracket, which is fixedly connected inside the limiting groove;

[0013] A pressure sensor is fixedly mounted on the surface of the mounting bracket.

[0014] In some embodiments, the limiting mechanism one includes:

[0015] A placement slot is formed on the upper surface of the work plate;

[0016] A first motor is fixedly installed on the inner wall of the placement slot, and the output end of the first motor is connected to a rotating shaft;

[0017] A connecting plate is fixedly connected to the surface of the rotating shaft;

[0018] A limiting plate is fixedly connected to one end of a connecting plate.

[0019] In some embodiments, an auxiliary component is provided on the upper surface of the work plate, the auxiliary component including a ramp plate disposed at one end of the work plate.

[0020] In some embodiments, adjustment mechanisms are provided on both sides of the working plate. Each adjustment mechanism includes a second motor, which is fixedly mounted on the side surface of the working plate. The output end of the second motor is connected to a threaded rod, and an adjustment bracket is threadedly connected to the surface of the threaded rod.

[0021] In some embodiments, the surface of the adjustment frame is provided with a second limiting mechanism, which includes an electric slide rail. The electric slide rail is fixedly installed on the upper surface of the adjustment frame, and a sliding block is slidably connected inside the electric slide rail. A limiting block is fixedly connected to the surface of the sliding block.

[0022] In some embodiments, the surface of the limiting block is provided with a parking mechanism, the parking mechanism including an electric push rod, the electric push rod being fixedly installed at the bottom of the limiting block, and one end of the electric push rod being fixedly connected to the parking block.

[0023] This utility model has at least the following beneficial effects:

[0024] The buffer pad of the buffer assembly is made of highly elastic and wear-resistant rubber. When the transport trolley approaches the limit end, the buffer pad contacts the trolley first, quickly absorbing the initial impact energy through its own elastic deformation. This reduces the rigid friction between the trolley body and the buffer plate, preventing scratches and damage to the trolley surface. Subsequently, the remaining impact force of the trolley pushes the buffer plate to compress the buffer spring. The spring, with its excellent elasticity, generates a reverse force to further offset the inertial impact force, completely avoiding hard collisions between the trolley and the equipment and rails, preventing rail deformation and breakage of equipment components. At the same time, the double buffer significantly reduces impact vibration, preventing materials such as steel billets on the trolley from slipping due to violent shaking, ensuring the integrity of the equipment and safe transport in all aspects. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of this utility model.

[0030] In the picture:

[0031] 1. Work board;

[0032] 2. Buffer assembly; 201. Limiting groove; 202. Mounting plate; 203. Buffer spring; 204. Buffer plate;

[0033] 3. Limiting mechanism one; 301. Placement slot; 302. First motor; 303. Connecting plate; 304. Limiting plate;

[0034] 4. Auxiliary components; 401. Inclined slab;

[0035] 5. Limiting mechanism two; 501. Electric slide rail; 502. Sliding block; 503. Limiting block;

[0036] 6. Parking mechanism; 601. Electric actuator; 602. Parking block;

[0037] 7. Adjustment mechanism; 701. Second motor; 702. Threaded rod; 703. Adjustment frame;

[0038] 8. Testing equipment; 801. Mounting bracket; 802. Pressure sensor. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please see Figures 1-5 This utility model provides a technical solution: a limiting device for a transport trolley in a steel rolling workshop, including a working plate 1, with buffer components 2 symmetrically arranged on the upper surface of the working plate 1, a detection mechanism 8 for detecting the vehicle position inside the buffer components 2, and a limiting mechanism 3 for limiting the transport trolley on one side of the buffer components 2. The buffer components 2 include:

[0041] The limiting groove 201 is formed on the upper surface of the working plate 1;

[0042] Mounting plate 202 is fixedly connected to the upper surface of working plate 1;

[0043] A buffer spring 203 is fixedly installed on the surface of the mounting plate 202.

[0044] The buffer plate 204 is fixedly connected to one end of the buffer spring 203, and a buffer pad is adhered to the surface of the buffer plate 204.

[0045] Through the above technical solution, the buffer assembly 2, symmetrically arranged on the upper surface of the working plate 1, uses the buffer spring 203 as the core buffer element, and together with the buffer plate 204 and the buffer pad bonded to the surface, constructs a double buffer structure. When the transport trolley rushes towards the limiting end, it first contacts the buffer pad on the surface of the buffer plate 204. The buffer pad can initially absorb some of the impact energy, reducing the rigid friction between the trolley and the buffer plate 204. Subsequently, the impact force of the trolley pushes the buffer plate 204 to move towards the mounting plate 202. The buffer spring 203 is compressed and generates a reverse elastic force, further offsetting the impact energy, avoiding a hard collision between the trolley and the device, effectively protecting the trolley body, track and limiting device itself, reducing the risk of component deformation and wear, and preventing the steel billets and rolled materials on the trolley from slipping due to violent impact, thus avoiding secondary safety accidents.

[0046] Please see Figure 2 , Figure 3 The testing institutions include:

[0047] Mounting bracket 801 is fixedly connected inside the limiting groove 201;

[0048] Pressure sensor 802 is fixedly mounted on the surface of mounting bracket 801.

[0049] Limiting mechanism 13 includes:

[0050] Placement groove 301 is formed on the upper surface of work plate 1;

[0051] The first motor 302 is fixedly installed on the inner wall of the placement slot 301, and the output end of the first motor 302 is connected to a rotating shaft.

[0052] Connecting plate 303 is fixedly connected to the surface of the rotating shaft;

[0053] Limiting plate 304 is fixedly connected to one end of connecting plate 303.

[0054] Through the above technical solution, the mounting bracket 801 is stably fixed inside the limiting groove 201, ensuring that the pressure sensor 802 is located in the core detection area of ​​the buffer assembly 2. When the transport trolley pushes the buffer plate 204 to compress the buffer spring 203, the buffer plate 204 will come into contact with the pressure sensor 802 during its movement. At this time, the pressure sensor 802 can capture the impact force signal in real time and convert the signal into an electrical signal, which is then transmitted to the control unit. When the control unit receives the trigger signal from the pressure sensor 802, it will immediately drive the first motor 302 to operate, causing the rotating shaft to rotate synchronously. This causes the connecting plate 303 fixed on the rotating shaft to rotate around the rotating shaft, ultimately pushing the limiting plate 304 from its initial retracted state to its vertically erected state. At this time, the erected limiting plate 304 can directly block the wheels of the transport trolley.

[0055] Please see Figure 3 , Figure 4 and Figure 5 An auxiliary component 4 is provided on the upper surface of the work plate 1. The auxiliary component 4 includes a ramp plate 401, which is located at one end of the work plate 1.

[0056] Adjustment mechanisms 7 are provided on both sides of the working plate 1. The adjustment mechanism 7 includes a second motor 701, which is fixedly installed on the side surface of the working plate 1. The output end of the second motor 701 is connected to a threaded rod 702, and the surface of the threaded rod 702 is threadedly connected to an adjustment bracket 703.

[0057] The surface of the adjustment frame 703 is provided with a second limiting mechanism 5, which includes an electric slide rail 501. The electric slide rail 501 is fixedly installed on the upper surface of the adjustment frame 703. A sliding block 502 is slidably connected inside the electric slide rail 501, and a limiting block 503 is fixedly connected to the surface of the sliding block 502.

[0058] The surface of the limiting block 503 is provided with a parking mechanism 6, which includes an electric push rod 601. The electric push rod 601 is fixedly installed at the bottom of the limiting block 503, and one end of the electric push rod 601 is fixedly connected to a parking block 602.

[0059] Through the above technical solution, the ramp 401 set on the upper surface of the working plate 1 can help slow down the trolley when it enters the limiting area, laying the foundation for the subsequent buffering action of the buffer component 2 and preventing excessive buffering pressure caused by the trolley's initial speed being too fast. The ramp 401 fixed at one end of the working plate 1 can guide the trolley to drive smoothly into the working plate 1, preventing the trolley chassis from colliding with the edge of the working plate 1. When facing trolleys of different lengths, the control unit can drive the second motors 701 on both sides of the working plate 1 to operate synchronously according to the trolley length parameters, driving the adjusting frame 703 to move back and forth along the trolley's travel direction, thereby adjusting the front and rear position of the limiting mechanism 2 5 on the working plate 1, ensuring that the limiting mechanism 2 5 can accurately correspond to trolleys of different lengths. After the trolley enters the working plate 1 and the adjusting mechanism 7 completes the front and rear position adjustment of the second limiting mechanism 5, the limiting block 503 can be moved to the rear wheel of the trolley under the drive of the electric slide rail 501 to limit it. When the adjusting mechanism 7 drives the second limiting mechanism 5 to move to a position that matches the current length of the trolley, and the limiting block 503 is adjusted to the corresponding lateral limiting point by the electric slide rail 501, the electric push rod 601 will drive the parking block 602 to move downward until the parking block 602 is in close contact with the upper surface of the working plate 1. Through the pressure friction between the parking block 602 and the working plate 1, the adjusting frame 703 and the second limiting mechanism 5 above are firmly locked to prevent the impact force generated by the trolley during the limiting process from pushing the second limiting mechanism 5 to move.

[0060] All electrical devices in this invention are powered by an external power source;

[0061] Working principle and usage process: The transport trolley travels along the track and smoothly enters the working plate 1 via the ramp 401 at one end of the working plate 1, which helps to slow down the trolley and prepare for subsequent buffering. The trolley continues to move to the buffer assembly 2 and first contacts the buffer pad on the surface of the buffer plate 204, where the buffer pad initially absorbs energy. Subsequently, the impact force pushes the buffer plate 204 to compress the buffer spring 203, and the front wheels of the transport trolley move and contact the pressure sensor 802 on the mounting bracket 801 inside the limit groove 201. The pressure sensor 802 transmits the signal to the control unit. After receiving the signal, the control unit drives the limit mechanism 3. The first motor 302 operates, causing the rotating shaft and connecting plate 303 to rotate, making the limiting plate 304 stand up and blocking the trolley wheels to limit longitudinal displacement. At the same time, the control unit drives the second motor 701 of the adjustment mechanism 7 according to the length of the trolley, causing the threaded rod 702 and the adjustment frame 703 to move back and forth, adjusting the position of the second limiting mechanism 5. The electric slide rail 501 drives the sliding block 502 and the limiting block 503 to move to the rear wheel of the trolley for a limit. The electric push rod 601 of the parking mechanism 6 pushes the parking block 602 to abut against the working plate 1, locking the adjustment frame 703 and the second limiting mechanism 5, completing the full-range limit.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A limiting device for a transport trolley in a steel rolling workshop, comprising a working plate (1), characterized in that, The upper surface of the working plate (1) is symmetrically provided with buffer components (2), and the buffer components (2) are provided with a detection mechanism (8) for detecting the vehicle position. A limiting mechanism (3) for limiting the transport vehicle is provided on one side of the buffer components (2). The buffer components (2) include: A limiting groove (201) is formed on the upper surface of the working plate (1); Mounting plate (202), which is fixedly connected to the upper surface of the working plate (1); A buffer spring (203) is fixedly mounted on the surface of the mounting plate (202); A buffer plate (204) is fixedly connected to one end of a buffer spring (203), and a buffer pad is adhered to the surface of the buffer plate (204).

2. The limiting device for a transport trolley in a steel rolling workshop according to claim 1, characterized in that, The testing organization (8) includes: Mounting bracket (801), which is fixedly connected to the inside of the limiting groove (201); Pressure sensor (802) is fixedly mounted on the surface of mounting bracket (801).

3. The limiting device for a transport trolley in a steel rolling workshop according to claim 1, characterized in that, The limiting mechanism one (3) includes: Placement slot (301) is formed on the upper surface of the work plate (1); The first motor (302) is fixedly installed on the inner wall of the placement slot (301), and the output end of the first motor (302) is connected to a rotating shaft; A connecting plate (303) is fixedly connected to the surface of the rotating shaft; A limiting plate (304) is fixedly connected to one end of a connecting plate (303).

4. The limiting device for a transport trolley in a steel rolling workshop according to claim 1, characterized in that: An auxiliary component (4) is provided on the upper surface of the working plate (1). The auxiliary component (4) includes a ramp plate (401) which is located at one end of the working plate (1).

5. The limiting device for a transport trolley in a steel rolling workshop according to claim 1, characterized in that: The working plate (1) is provided with adjustment mechanisms (7) on both sides of the working plate (1). The adjustment mechanism (7) includes a second motor (701). The second motor (701) is fixedly installed on the side surface of the working plate (1). The output end of the second motor (701) is connected to a threaded rod (702). The surface of the threaded rod (702) is threadedly connected to an adjustment bracket (703).

6. A limiting device for a transport trolley in a steel rolling workshop according to claim 5, characterized in that: The surface of the adjustment frame (703) is provided with a second limiting mechanism (5), the second limiting mechanism (5) includes an electric slide rail (501), the electric slide rail (501) is fixedly installed on the upper surface of the adjustment frame (703), a sliding block (502) is slidably connected inside the electric slide rail (501), and a limiting block (503) is fixedly connected to the surface of the sliding block (502).

7. A limiting device for a transport trolley in a steel rolling workshop according to claim 6, characterized in that: The surface of the limiting block (503) is provided with a parking mechanism (6), the parking mechanism (6) includes an electric push rod (601), the electric push rod (601) is fixedly installed at the bottom of the limiting block (503), and one end of the electric push rod (601) is fixedly connected to a parking block (602).

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