A large two-way material car positioning device

Abstract

The utility model discloses a large-scale bidirectional material cart positioning device, including a positioning mechanism and a hydraulic system; at least one group of positioning mechanisms is respectively provided at the front and rear ends of the large vehicle, and the positioning mechanism includes a hydraulic cylinder, a positioning pulley and an adjustable V-shaped positioning block, and the hydraulic cylinder is installed at the ends of the front and rear ends of the large vehicle, and the output end of the hydraulic cylinder faces downward and is connected with a positioning pulley; the V-shaped positioning block is preset on the ground or underground and is located at a designated position where the large vehicle needs to stop; after the large vehicle reaches the designated position and stops, the hydraulic system controls the operation of the hydraulic cylinder to drive the positioning pulley to move toward the V-shaped positioning block, and when the positioning pulley contacts the V-shaped positioning block, the interaction force between them causes the large vehicle to automatically align and position. The utility model can realize accurate positioning of the bidirectional material cart, reduce failures, and avoid safety hazards by setting up double hydraulic cylinders and double positioning grooves, and adopting the pulley and the V-shaped groove for automatic fine-tuning alignment and positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of large-scale material carts, in particular to a large-scale bidirectional material cart positioning device. Background Art

[0002] In the existing industrial production, the 20-ton large bidirectional material car is the key equipment for loading and unloading annealing furnace materials. Its performance and stability have an important impact on the continuity and efficiency of the production line. In the process of loading and unloading, the accurate positioning of the large car is an important guarantee for the smooth feeding, extraction and movement of the small car in the furnace.

[0003] Furnace loading process: large cart in place → large cart positioned → trolley lifted → trolley moved forward to feed materials → trolley lowered in the furnace → trolley returned, the process ends.

[0004] Unfurnace process: large cart in place → large cart positioned → small cart entering furnace → small cart lifted in furnace → small cart returned → small cart lowered and returned, the process ends.

[0005] At present, the main positioning method of the trolley is to use a single hydraulic cylinder installed in the middle of the material car, and use a single set of control valves to drive the positioning rod and the positioning hole for insertion positioning. However, due to the asymmetric difference between the odd and even furnace tracks on both sides of the trolley, in order to ensure adaptability in various situations, the matching clearance between the trolley positioning pin and the positioning hole is designed to be relatively large, which leads to a reduction in positioning accuracy.

[0006] In addition, due to the large span of the trolley (up to 7 meters), it is easy to sway left and right when starting and stopping. The single-point positioning method cannot ensure the straightness of the material car trolley and the track in the furnace, thereby increasing the risk of the trolley derailing in the furnace, seriously affecting the normal operation of the production line. Utility Model Content

[0007] The purpose of the utility model is to provide a large-scale bidirectional material car positioning device, which can accurately position, reduce failures, avoid safety hazards, and thus overcome the defect of inaccurate single-point positioning.

[0008] To achieve the above-mentioned purpose, the solution of the utility model is: a large-scale bidirectional material car positioning device, including a positioning mechanism and a hydraulic system;

[0009] At least one set of positioning mechanisms is respectively provided at the front and rear ends of the trolley, and the positioning mechanisms include a hydraulic cylinder, a positioning pulley and an adjustable V-shaped positioning block. The hydraulic cylinder is installed at the ends of the front and rear ends of the trolley, and the output end of the hydraulic cylinder faces downward and is connected to the positioning pulley; the V-shaped positioning block is preset on the ground or underground and is located at the designated position where the trolley needs to stop;

[0010] After the trolley reaches the designated position and stops, the hydraulic system controls the operation of the hydraulic cylinder to drive the positioning pulley to move toward the V-shaped positioning block. When the positioning pulley contacts the V-shaped positioning block, the interaction force between them causes the trolley to automatically align and position.

[0011] Furthermore, a positioning groove is pre-buried at a designated position underground, the upper surface of the positioning groove is flush with the ground, the V-shaped positioning block is embedded in the positioning groove with its opening facing upward, and the upper surface of the V-shaped positioning block is lower than the ground.

[0012] Furthermore, adjusting bolts are provided between the front and rear ends of the V-shaped positioning block and the side walls of the positioning groove, and the position of the V-shaped positioning block is adjusted by rotating the adjusting bolts.

[0013] Furthermore, the cross section of the V-shaped positioning block is a V-shaped symmetrical structure, and when the outer periphery of the positioning pulley is tangent to the two side walls of the V-shaped positioning block, the trolley completes positioning.

[0014] Furthermore, two sets of the positioning mechanisms are respectively provided at the front and rear ends of the vehicle, and the four sets of positioning mechanisms are symmetrical to each other.

[0015] Furthermore, the positioning device also includes an electrical control system, which is used to coordinate and control the actions of the hydraulic system and the positioning mechanism.

[0016] Furthermore, the hydraulic system includes a hydraulic pump, a control valve and a reversing valve. The hydraulic pump is connected to the control valve and the reversing valve by oil circuits. When the truck reaches the specified position, the hydraulic pump starts, and the hydraulic oil passes through the control valve and the distribution valve to reach each hydraulic cylinder, thereby driving the hydraulic cylinder to move.

[0017] After adopting the above scheme, the beneficial effects of the utility model are:

[0018] Precise positioning: The hydraulic system drives the positioning pulley to move to the V-shaped positioning block, which can achieve precise positioning of the trolley. The high control accuracy of the hydraulic system can ensure that the trolley stops accurately at the specified position, avoiding the errors and uncertainties in traditional positioning methods.

[0019] High reliability: The design of the positioning mechanism makes the contact between the trolley and the V-shaped positioning block stable and reliable. The design of the V-shaped positioning block can effectively support and position the trolley, reducing the displacement caused by external force or vibration. At the same time, the setting of multiple sets of positioning mechanisms also enhances the redundancy of the system. Even if some mechanisms fail, other mechanisms can still maintain the positioning function.

[0020] Efficient operation: The electrical control system simplifies the operation process, allowing the operator to easily select the furnace number and the odd and even furnace number through the conversion switch, which improves the convenience and efficiency of operation. In addition, the automated positioning process also reduces the need for manual intervention, reducing the difficulty of operation and the error rate.

[0021] Improved safety: Accurate positioning reduces potential safety hazards during the operation of the material car, such as scraping furnace doors, derailment and other faults. In addition, the fault detection and alarm function of the electrical control system can also detect and deal with potential safety problems in a timely manner, improving the overall safety of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top view of a large-scale bidirectional material car positioning device according to one embodiment of the utility model;

[0023] Figure 2 It is a side view of a large-scale bidirectional material vehicle positioning device according to an embodiment of the utility model;

[0024] Figure 3 This is a three-dimensional diagram of a large-scale bidirectional material vehicle positioning device according to an embodiment of the utility model;

[0025] Figure 4 It is a three-dimensional diagram of a positioning mechanism of an embodiment of the utility model;

[0026] Figure 5 It is a cross-sectional view of a positioning mechanism of an embodiment of the utility model;

[0027] Figure 6 It is a hydraulic principle diagram of a hydraulic system of an embodiment of the utility model.

[0028] Description of labels:

[0029] 1. Cart; 2. Track;

[0030] 3. Positioning mechanism; 31. Hydraulic cylinder; 32. Positioning pulley; 33. V-shaped positioning block; 34. Positioning groove; 35. Adjusting bolt. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] The utility model provides a large-scale bidirectional material car positioning device, such as Figures 1 to 6 As shown, it includes a positioning mechanism 3, a hydraulic system and an electrical control system (not shown in the figure), wherein the electrical control system is used to coordinate and control the actions of the hydraulic system and the positioning mechanism 3.

[0033] The utility model adopts a double positioning mechanism 3 to improve the positioning accuracy. Specifically, at least one set of positioning mechanisms 3 is provided at the front and rear ends of the vehicle 1. Figure 4 and Figure 5As shown, the positioning mechanism 3 includes a hydraulic cylinder 31, a positioning pulley 32 and an adjustable V-shaped positioning block 33. The hydraulic cylinder 31 is installed at the ends of the front and rear ends of the cart 1. The output end of the hydraulic cylinder 31 faces downward and is connected to the positioning pulley 32. The V-shaped positioning block 33 is preset on the ground or underground and is located at a designated position on the running track of the cart 1 where it needs to stop. After the cart 1 reaches the designated position and stops, the hydraulic system controls the operation of the hydraulic cylinder 31 to drive the positioning pulley 32 to move toward the V-shaped positioning block 33. When the positioning pulley 32 contacts the V-shaped positioning block 33, the interaction force between them causes the cart 1 to automatically align and position.

[0034] Key References Figure 1 and Figure 4 In this embodiment, the V-shaped positioning block 33 is set in a manner that it is embedded in a positioning groove 34 pre-buried at a designated position on the ground, the upper surface of the positioning groove 34 is flush with the ground, the V-shaped positioning block 33 is embedded in the positioning groove 34 with its opening facing upward, and the upper surface of the V-shaped positioning block 33 is lower than the ground. This installation method is relatively stable and can improve positioning accuracy and stability. The V-shaped positioning block 33 can also be directly installed on the ground through a fixing plate, but this method makes the V-shaped positioning block 33 protrude from the ground, which may interfere with the operation of the vehicle 1, so it is preferred to open a positioning groove 34 to install the V-shaped positioning block 33.

[0035] In addition, in order to further improve the positioning accuracy and adaptability of the V-shaped positioning block 33, as Figure 4 and Figure 5 As shown, an adjusting bolt 35 is provided between the front and rear ends of the V-shaped positioning block 33 and the side wall of the positioning groove 34, and the length of the positioning groove 34 is greater than the length of the V-shaped positioning block 33. Then, by rotating the adjusting bolt 35, the position of the V-shaped positioning block 33 in the positioning groove 34 can be adjusted, thereby achieving accurate adaptation to carts 1 of different sizes and shapes. This design not only enhances the versatility and flexibility of the positioning device, but also simplifies the installation and debugging process and reduces maintenance costs.

[0036] like Figure 5 As shown, the cross section of the V-shaped positioning block 33 presents a V-shaped symmetrical structure. This design enables the positioning block to better adapt to and support the positioning pulley 32. When the positioning pulley 32 reaches the V-shaped positioning block 33, it can automatically fine-tune and align the position until the outer periphery of the positioning pulley 32 is tangent to the two side walls of the V-shaped positioning block 33, which means that the trolley 1 has been accurately aligned and parked at the specified position, thereby completing the positioning process. This tangent state ensures the straightness of the material car and the track 2 in the furnace, effectively avoids safety hazards such as the trolley derailing in the furnace, and ensures the smooth operation of the material car in and out of the furnace.

[0037] like Figure 1As shown, two sets of the above-mentioned positioning mechanisms 3 are respectively provided at the front and rear ends of the vehicle 1, and the four sets of positioning mechanisms 3 are symmetrical to each other. This layout enables the front and rear directions of the bidirectional vehicle 1 to be accurately positioned simultaneously, effectively overcoming the problem of inaccurate positioning that may exist in single-point positioning. The design of the four sets of positioning mechanisms 3 also enhances the fault tolerance of the system. Even if one set of positioning mechanisms 3 fails or has an error, the other positioning mechanisms 3 can still work together to ensure the stable positioning of the vehicle 1.

[0038] The hydraulic system described in this case includes a hydraulic pump, a control valve and a reversing valve, and the hydraulic pump is connected to the oil circuit between the control valve and the reversing valve. When the trolley 1 reaches the designated position, the hydraulic pump is immediately started, and the hydraulic oil begins to flow, and the flow and direction are first adjusted through the control valve. The hydraulic oil that passes through the control valve passes through the distribution valve and is accurately distributed to each hydraulic cylinder 31. When the hydraulic oil enters the hydraulic cylinder 31, it pushes the piston of the hydraulic cylinder 31 to move linearly. This linear motion is converted into a force on the V-shaped positioning block 33 through the positioning pulley 32 connected to the hydraulic cylinder 31. The close fit between the positioning pulley 32 and the V-shaped positioning block 33 ensures that the trolley 1 can be stably and accurately positioned at the designated position.

[0039] The working principle of the positioning device of the utility model large bidirectional material car is as follows (reference structure Figure 1 and hydraulic principle Figure 6 ):

[0040] Signal input: The furnace number and the odd and even furnace numbers are selected through the conversion switch, and this signal is transmitted to the PLC of the electrical control system.

[0041] Logical judgment: PLC judges the designated position that vehicle 1 should reach based on the received signal and the preset program logic.

[0042] Command output: The PLC controls the switch of the solenoid valve by outputting commands, thereby starting the hydraulic pump and allowing the hydraulic oil to reach each hydraulic cylinder 31 through the control valve and the distribution valve.

[0043] Hydraulic action: Driven by the hydraulic system, the hydraulic cylinder 31 begins to extend and retract, pushing the positioning pulley 32 to reach the positioning V-shaped block.

[0044] Automatic alignment: The cooperation between the positioning pulley 32 and the positioning V-shaped block enables the trolley 1 to automatically align to ensure accurate positioning.

[0045] State feedback: Sensors and detection elements monitor the position of the trolley 1 and the operating state of the hydraulic cylinder 31 in real time, and feed back this information to the PLC.

[0046] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0047] Meanwhile, the directions such as front, back, left, and right involved in this embodiment are only used as a reference for directions and do not represent directions in actual use. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.

Claims

1. A large bidirectional material car positioning device, characterized in that: Including positioning mechanism and hydraulic system; At least one set of positioning mechanisms is respectively provided at the front and rear ends of the trolley, and the positioning mechanisms include a hydraulic cylinder, a positioning pulley and an adjustable V-shaped positioning block. The hydraulic cylinder is installed at the ends of the front and rear ends of the trolley, and the output end of the hydraulic cylinder faces downward and is connected to the positioning pulley; the V-shaped positioning block is preset on the ground or underground and is located at the designated position where the trolley needs to stop; After the trolley reaches the designated position and stops, the hydraulic system controls the operation of the hydraulic cylinder to drive the positioning pulley to move toward the V-shaped positioning block. When the positioning pulley contacts the V-shaped positioning block, the interaction force between them causes the trolley to automatically align and position.

2. A large bidirectional material car positioning device as claimed in claim 1, characterized in that: A positioning groove is pre-buried at a designated position underground, the upper surface of the positioning groove is flush with the ground, a V-shaped positioning block is embedded in the positioning groove with its opening facing upward, and the upper surface of the V-shaped positioning block is lower than the ground.

3. A large bidirectional material car positioning device as claimed in claim 2, characterized in that: Adjustment bolts are arranged between the front and rear ends of the V-shaped positioning block and the side walls of the positioning groove, and the position of the V-shaped positioning block can be adjusted by rotating the adjustment bolts.

4. A large bidirectional material car positioning device as claimed in claim 1, characterized in that: The cross section of the V-shaped positioning block is a V-shaped symmetrical structure. When the outer periphery of the positioning pulley is tangent to the two side walls of the V-shaped positioning block, the trolley completes the positioning.

5. A large bidirectional material car positioning device as claimed in claim 1, characterized in that: Two sets of the positioning mechanisms are respectively arranged at the front and rear ends of the vehicle, and the four sets of positioning mechanisms are symmetrical to each other.

6. A large bidirectional material car positioning device as claimed in claim 1, characterized in that: The positioning device also includes an electrical control system, which is used to coordinate and control the actions of the hydraulic system and the positioning mechanism.

7. A large bidirectional material car positioning device as claimed in claim 1, characterized in that: The hydraulic system includes a hydraulic pump, a control valve and a reversing valve. The hydraulic pump is connected to the control valve and the reversing valve by oil circuits. When the truck reaches the specified position, the hydraulic pump starts, and the hydraulic oil passes through the control valve and the distribution valve to reach each hydraulic cylinder, thereby driving the hydraulic cylinder to move.

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