A cold bending machine

Abstract

The utility model relates to mine equipment technical field especially relates to a cold bending machine to solve the problem that the processing equipment of traditional supporting material cannot adapt to the demand of multiple working conditions and is highly dependent on manual in prior art. Cold bending machine is used for the arch supporting material processing of the arch shape roadway in the coal mine, and the hydraulic unit, transmission unit, drive unit and measuring unit are all arranged on the support plate, the transmission unit is arranged on the first end part of the support plate, the drive unit is arranged on the transmission unit, and the drive unit is used for driving the transmission unit to transmit the workpiece to be processed; the hydraulic unit is arranged on the second end part of the support plate, and the hydraulic unit is used for controlling the bending action of the workpiece to be processed; the measuring unit is arranged at the part close to the hydraulic unit and is used for measuring the processing parameter of the workpiece to be processed. The cold bending machine provided by the utility model is used for realizing the automatic processing supporting material.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, and in particular to a cold bending machine. Background Technology

[0002] In coal mining, the quality of underground roadway support directly affects mine production safety and operational efficiency. Especially in the case of mining soft coal seams, the roadway roof often suffers from poor shaping and unevenness. Traditional support methods utilize standardized prefabricated components such as anchor beams with fixed arch parameters, making it impossible to precisely match the irregular shape of the actual roadway roof. This often leads to the formation of gaps in the roof during the support process.

[0003] Furthermore, the problem of an open roof not only reduces the stability of the support structure but may also lead to safety hazards such as roof collapse, seriously threatening the lives of underground workers and the normal production of the mine. At the same time, the processing equipment for traditional support materials is often complex in structure and has a low degree of automation, making it difficult to flexibly adjust processing parameters according to the real-time working conditions of the underground roof. This results in insufficient adhesion between the support material and the roof, further affecting the support effect.

[0004] Therefore, how to solve the problem that the processing equipment for traditional support materials cannot adapt to the needs of multiple working conditions and has a high degree of dependence on manual labor in the existing technology is one of the important problems that urgently need to be solved in this field. Utility Model Content

[0005] In view of this, the present invention provides a cold bending machine to solve the problem in the prior art that traditional support material processing equipment cannot adapt to multiple working conditions and has a high degree of dependence on manual labor.

[0006] According to one aspect of the present invention, a cold bending machine is provided for processing arch support materials for underground arched roadways in coal mines. The cold bending machine includes: a hydraulic unit, a transmission unit, a drive unit, a measuring unit, and a support plate. The hydraulic unit, transmission unit, drive unit, and measuring unit are all disposed on the support plate. The transmission unit is disposed at the first end of the support plate. The drive unit is disposed on the transmission unit and is used to drive the transmission unit to transmit the workpiece to be processed. The hydraulic unit is located at the second end of the support plate and is used to control the bending action of the workpiece; the measuring unit is located near the hydraulic unit and is used to measure the processing parameters of the workpiece.

[0007] According to one aspect of the present invention, a cold bending machine includes a measurement unit comprising a data acquisition subunit and a display subunit. The data acquisition subunit is used to acquire the curvature parameters of the workpiece during the bending process in real time, and the display subunit is used to display the curvature parameters acquired by the data acquisition subunit in real time.

[0008] According to one aspect of the present invention, in a cold bending machine, when the drive unit sends a first signal, the hydraulic unit receives the first signal and adjusts the bending parameters of the hydraulic unit to adapt to the workpieces of different specifications.

[0009] According to one aspect of the present invention, the cold bending machine includes a hydraulic unit comprising: Multi-stage hydraulic cylinders, with stroke control accuracy up to ±0.1mm; The proportional valve assembly is used to receive the first signal from the drive unit to adjust the bending force on the workpiece. The mold changing mechanism is used to change molds of different models.

[0010] According to one aspect of the present invention, a cold bending machine has a transmission unit that is synchronously linked with a hydraulic unit to achieve automated bending processing of the workpiece.

[0011] According to one aspect of the present invention, a cold bending machine includes a conveying roller group and a transmission mechanism. The driving mechanism of the driving unit is connected to the transmission mechanism and is used to drive the conveying roller group to rotate in order to convey the workpiece to be processed.

[0012] According to one aspect of the present invention, the cold bending machine adopts a segmented design for the conveyor roller assembly, which includes: The feeding section has a roller spacing of 300mm and its surface is covered with a polyurethane layer. The processing section has a roller spacing of 150mm and is also equipped with a V-shaped guide groove. The discharge section is equipped with a lifting mechanism to achieve automatic unloading.

[0013] According to one aspect of the present invention, the cold bending machine uses an arched support material as an arched anchor cable beam.

[0014] According to one aspect of the present invention, the cold bending machine further includes an early warning unit, which is disposed on a support plate and is used to monitor the operating status of the cold bending machine. When an abnormality is detected in the cold bending machine, an early warning is issued and the cold bending machine is controlled to stop running.

[0015] According to one aspect of the present invention, the support plate of the cold bending machine is a steel plate; the material of the steel plate is Q690 high-strength steel plate.

[0016] The above-mentioned technical solutions adopted in this utility model embodiment can achieve the following beneficial effects: In the above-mentioned cold bending machine, the measuring unit is set close to the hydraulic unit, which can capture the key parameters of the workpiece in real time during the bending process. By providing real-time feedback of processing data, the action parameters of the hydraulic unit can be corrected in a timely manner, avoiding forming deviations caused by material elastic deformation, transmission errors, etc., ensuring that the arch structure of the support material is highly matched with the roadway design parameters, and reducing the adjustment cost during underground installation. Based on this, the hydraulic drive has the characteristics of large output force and high control precision, and can accurately control the magnitude and rhythm of bending force. For the steel commonly used in coal mine support, a stable force value is required during cold bending to avoid brittle fracture or excessive deformation of the material. The characteristics of the hydraulic unit just meet this requirement, ensuring the stability of the mechanical properties of the formed material. On this basis, the transmission unit is responsible for conveying the workpiece, and the drive unit provides power for the transmission. The two work together to realize continuous and automated material transmission. Compared with the traditional manual feeding mode, it can reduce the time consumption of manual handling and positioning, avoid processing interruptions caused by inconsistent manual operation rhythm, and significantly improve processing continuity.

[0017] In addition, the hydraulic unit, transmission unit, and measuring unit are all integrated on the support plate. Each unit is fixed in position and works closely together. The transmission unit accurately delivers the material to the bending station, the hydraulic unit executes the bending action in real time, and the measuring unit monitors synchronously. The entire process does not require transfer between equipment, which greatly shortens the process changeover time and increases the processing capacity per unit time of a single machine.

[0018] Secondly, the support plate, serving as the mounting foundation for each functional unit, ensures the relative positional stability of the hydraulic unit, transmission unit, and other components through unified load-bearing. In high-load processing such as cold bending, this reduces processing errors caused by equipment vibration and component displacement, improving the long-term operational stability of the equipment. Simultaneously, the fixed layout reduces the difficulty of equipment debugging and facilitates daily maintenance. The drive unit automatically feeds the transmission unit, reducing the frequency of direct manual contact with the workpiece and lowering the risk of bumps and crushing during material handling. Automated operation also avoids the safety hazards of hands approaching the bending station during manual positioning. The measuring unit monitors processing parameters and provides real-time warnings for out-of-tolerance data, promptly stopping the hydraulic unit's operation to prevent the production of defective products or equipment overload damage, indirectly ensuring the safety of the processing. This effectively solves the problems of existing technologies where traditional support material processing equipment cannot adapt to multiple working conditions and relies heavily on manual labor. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a cold bending machine provided as an example of this utility model.

[0021] Figure label: 101-Hydraulic unit, 102-Transmission unit, 103-Drive unit, 104-Measurement unit, 105-Support plate. Detailed Implementation

[0022] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0023] It should be understood that the steps described in the method embodiments of this utility model may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this utility model is not limited in this respect.

[0024] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0025] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0026] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0027] In coal mining, the quality of underground roadway support directly affects mine production safety and operational efficiency. Especially in the case of mining soft coal seams, the roadway roof often suffers from poor shaping and unevenness. Traditional support methods utilize standardized prefabricated components such as anchor beams with fixed arch parameters, making it impossible to precisely match the irregular shape of the actual roadway roof. This often leads to the formation of gaps in the roof during the support process.

[0028] Furthermore, the problem of an open roof not only reduces the stability of the support structure but may also lead to safety hazards such as roof collapse, seriously threatening the lives of underground workers and the normal production of the mine. At the same time, the processing equipment for traditional support materials is often complex in structure and has a low degree of automation, making it difficult to flexibly adjust processing parameters according to the real-time working conditions of the underground roof. This results in insufficient adhesion between the support material and the roof, further affecting the support effect.

[0029] To address the aforementioned problems, an exemplary embodiment of this utility model provides a cold bending machine to solve the issues in the prior art where traditional support material processing equipment cannot adapt to various working conditions and has a high degree of reliance on manual labor.

[0030] A cold bending machine according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the cold bending machine structure provided as an example of the present invention, such as... Figure 1 As shown, the cold bending machine is used for processing arch support materials in underground arched roadways of coal mines. The hydraulic unit 101, transmission unit 102, drive unit 103, and measuring unit 104 are all mounted on the support plate 105. The transmission unit 102 is located at the first end of the support plate 105, and the drive unit 103 is mounted on the transmission unit 102, driving the transmission unit 102 to transmit the workpiece to be processed. The hydraulic unit 101 is located at the second end of the support plate 105 and is used to control the bending action of the workpiece. The measuring unit 104 is located near the hydraulic unit 101 and is used to measure the processing parameters of the workpiece.

[0032] In practical applications, such as Figure 1As shown, the measuring unit 104 is positioned close to the hydraulic unit 101, enabling real-time capture of key parameters of the workpiece during the bending process. By providing immediate feedback on processing data, the operating parameters of the hydraulic unit 101 can be promptly corrected, preventing forming deviations caused by material elastic deformation, transmission errors, etc., ensuring a high degree of match between the arch structure of the support material and the roadway design parameters, and reducing adjustment costs during underground installation. Based on this, the hydraulic drive features high output force and high control precision, allowing for precise control of the bending force and its application rhythm. For steel commonly used in coal mine support, a stable force value is required during cold bending to prevent brittle fracture or excessive deformation. The characteristics of the hydraulic unit 101 perfectly meet this requirement, ensuring stable mechanical properties of the formed material. Furthermore, the transmission unit 102 is responsible for conveying the workpiece, and the drive unit 103 provides power for the transmission; the two work together to achieve continuous and automated material transmission. Compared to the traditional manual feeding mode, this reduces the time spent on manual handling and positioning, avoids processing interruptions caused by inconsistent manual operation rhythms, and significantly improves processing continuity.

[0033] In addition, the hydraulic unit 101, the transmission unit 102, and the measuring unit 104 are all integrated on the support plate 105. The positions of each unit are fixed and they work closely together. The transmission unit 102 accurately delivers the material to the bending station, the hydraulic unit 101 immediately performs the bending action, and the measuring unit 104 monitors synchronously. The entire process does not require cross-equipment transfer, which greatly shortens the process changeover time and increases the processing capacity per unit time of a single machine.

[0034] Secondly, the support plate 105 serves as the mounting foundation for each functional unit, ensuring the relative positional stability of the hydraulic unit 101, transmission unit 102, etc., through unified load bearing. In high-load processing such as cold bending, this reduces processing errors caused by equipment vibration and component displacement, improving the long-term operational stability of the equipment. Simultaneously, the fixed layout reduces the difficulty of equipment debugging and facilitates daily maintenance. The drive unit 103 drives the transmission unit 102 for automatic feeding, reducing the frequency of direct manual contact with the workpiece and lowering the risk of bumps and squeezing during material handling. Automated operation also avoids the safety hazards of hands approaching the bending station during manual positioning. The measuring unit 104 monitors processing parameters and provides real-time warnings for out-of-tolerance data, promptly stopping the hydraulic unit 101 to prevent the production of defective products or equipment overload damage, indirectly ensuring the safety of the processing. This effectively solves the problems in existing technologies where traditional support material processing equipment cannot adapt to multiple working conditions and has a high degree of reliance on manual labor.

[0035] For example, such as Figure 1As shown, the measurement unit 104 includes an acquisition subunit and a display subunit. The acquisition subunit is used to acquire the curvature parameters of the workpiece during the bending process in real time, and the display subunit is used to display the curvature parameters acquired by the acquisition subunit in real time.

[0036] In practical applications, such as Figure 1 As shown, it can be understood that the aforementioned acquisition subunit can be a laser displacement sensor, a vision sensor, or a contact-type curvature sensor; specific examples are not listed here. Taking a contact-type curvature sensor as an example, after the acquisition subunit completes hardware initialization and ensures that the relative position of the sensor and the bending equipment is fixed, the system performs parameter calibration according to the design requirements of the workpiece to be processed, and presets the acquisition frequency and data filtering rules. The display subunit's startup interface initializes, loads the basic information of the workpiece to be processed, and activates the real-time display window.

[0037] As demonstrated by the above implementation process, the display subunit replaces traditional experience-based judgment with a visual interface, allowing operators to quickly grasp the bending rhythm without the need for extensive experience. Some high-end display subunits support the comparison of target and actual values, with arrow indicators for direction adjustment, further reducing operational difficulty. The data acquisition subunit can synchronously store historical data, which, combined with the recording function of the display subunit, forms a complete quality traceability archive. When quality issues arise, the cause can be located through data backtracking. The accumulated curvature parameter data can be used to analyze the optimization potential of the bending process, helping companies gradually improve process stability.

[0038] For example, such as Figure 1As shown, when the drive unit 103 sends a first signal, the hydraulic unit 101 receives the first signal and adjusts its bending parameters to adapt to different specifications of workpieces. Different specifications of workpieces have significantly different requirements for hydraulic bending parameters. Workpieces with higher material hardness require higher hydraulic pressure to achieve plastic deformation; insufficient pressure can easily lead to inaccurate bending angles. Conversely, softer workpieces are prone to wrinkling and cracking if the pressure is too high. Thick plate workpieces require a higher bending speed to ensure uniform stress release and avoid excessive springback; thin plate workpieces require a faster bending speed to reduce deformation waiting time and prevent workpiece displacement. The hydraulic unit 101 automatically matches the preset parameter library upon receiving the first signal, quickly switching to the appropriate parameters without manual mold changes or repeated adjustments. Furthermore, the bending process for different specifications of workpieces requires extremely high parameter accuracy; parameter deviations can easily lead to batch quality problems. Insufficient hydraulic pressure may result in under-bending of thick plate workpieces. Excessive pressure may result in over-bending or edge plastic damage to thin plate workpieces. When the speed is too high, the stress on the workpiece is not fully released during the moment of deformation, resulting in increased springback. When the speed is too low, excessive local deformation may occur due to prolonged stress. The hydraulic unit 101 receives the first signal from the drive unit 103 and adjusts the bending parameters, replacing reliance on manual experience with automated adaptation. This achieves multiple goals in bending scenarios for workpieces of various specifications, including improved flexibility, guaranteed precision, optimized efficiency, and reduced costs.

[0039] For example, such as Figure 1 As shown, in bending processes, the stroke of the hydraulic cylinder directly determines the bending depth, straight edge length, and curvature variation of the workpiece. The ±0.1mm stroke accuracy of the multi-stage hydraulic cylinder ensures that the slider displacement is highly consistent with the target value. For simple straight edge bending, the straight edge length error can be controlled within ±0.15mm. For complex multi-segment bending, the start and end points of each stroke can be precisely controlled, avoiding problems such as uneven curvature transitions and abrupt angle changes caused by stroke deviations. This high-precision control directly reduces the rework rate of workpieces due to dimensional deviations, improving the consistency of batch production.

[0040] Furthermore, after receiving the first signal, the proportional valve assembly can achieve stepless adjustment of the bending force by adjusting the valve core opening, rather than the stepped switching of traditional on / off valves. This characteristic allows the equipment to accurately match the optimal bending force for each type of workpiece, with a force control accuracy within ±2kN, reducing the problems of "under-bending" and "over-bending" caused by force deviation. The response time of the proportional valve assembly is typically within 50ms-100ms, allowing it to quickly receive real-time signals from the drive unit 103 for force correction. If the measuring unit 104 detects that the actual curvature is less than the target value, the drive unit 103 immediately sends a signal to the proportional valve assembly to increase the bending force by 5%-10%. If the curvature is detected to be too large, the bending force is quickly reduced. This dynamic closed-loop control from signal to adjustment can compensate for deviations caused by factors such as workpiece springback and material inhomogeneity in real time, ensuring that the final bending accuracy is controlled within ±0.3°, which is especially suitable for processing springback-sensitive materials. In traditional bending, force switching may cause pressure shocks due to valve assembly response lag, resulting in indentations on the workpiece surface or wear on the equipment's hydraulic system. The proportional valve assembly linearly adjusts the valve core opening, allowing the bending force to smoothly rise from zero to the target value, reducing impact stress. Simultaneously, the force unloading process is equally smooth, preventing workpiece bouncing or shifting due to sudden force release. This protects the workpiece surface quality and extends the service life of the hydraulic system and the mold.

[0041] Secondly, traditional manual mold changing requires disassembling mold fixing bolts, adjusting mold position, and retightening, resulting in a long time consumption per mold change. The automated mold changing mechanism, using a robotic arm for gripping and positioning pins for guidance, can shorten mold changing time and improve efficiency. After the mold changing mechanism replaces the mold with a suitable one, the drive unit 103 sends a first signal to the proportional valve group to adjust the bending force to match the mold model and workpiece specifications. The multi-stage hydraulic cylinder pushes the slider downwards according to a preset stroke, the proportional valve group adjusts the force value in real time, and the measuring unit 104 feeds back the radian parameters. The drive unit 103 dynamically corrects the hydraulic cylinder stroke and proportional valve force value based on the deviation signal, forming a closed-loop control of "mold-force-stroke".

[0042] For example, such as Figure 1As shown, the transmission unit 102 is responsible for the positioning, conveying, and posture adjustment of the workpiece, while the hydraulic unit 101 controls the force, speed, and stroke of the bending action through driving force. After the transmission unit 102 delivers the workpiece to the bending station, the hydraulic unit 101 can start the bending action according to a preset timing sequence, avoiding bending position deviations caused by transmission delays or advances. During the bending process, the transmission unit 102 can fine-tune the workpiece clamping force or conveying speed in real time based on the pressure feedback from the hydraulic unit 101, preventing workpiece deformation due to uneven force, which is especially suitable for processing thin-walled, high-precision metal parts. The synchronous linkage mechanism reduces the intermittent process in traditional processing, realizing full automation from workpiece loading, positioning, bending to unloading. For batch processing scenarios, the transmission unit 102 can continuously convey workpieces according to a preset rhythm, and the hydraulic unit 101 synchronously completes the bending action, eliminating the need for manual alignment or starting and stopping of the equipment, significantly improving production efficiency. By controlling the transmission and synchronization parameters of hydraulic actions through program control, the problem of processing consistency caused by differences in experience or fatigue in manual operation is avoided, thus reducing the scrap rate.

[0043] For example, the transmission unit 102 includes a conveying roller group and a transmission mechanism. The drive mechanism of the drive unit 103 is connected to the transmission mechanism and is used to drive the conveying roller group to rotate to convey the workpiece to be processed. The conveying roller group adopts a segmented design and includes: a feeding section with a roller spacing of 300mm and a polyurethane layer covering the surface of the feeding section; a processing section with a roller spacing of 150mm and a V-shaped guide groove; and a discharging section with a lifting mechanism for automatic unloading.

[0044] In practical applications, such as Figure 1As shown, when the workpiece enters the transmission unit 102, the drive mechanism of the drive unit 103 transmits power to the feeding section conveyor roller group through the transmission mechanism, driving the roller shaft to rotate. After the workpiece is placed on the surface of the feeding section rollers, the 300mm roller spacing can accommodate workpieces of different widths. The rotating roller shaft drives the workpiece forward through friction. The polyurethane layer covering the feeding section rollers is elastic and wear-resistant, making flexible contact with the workpiece surface during the conveying process, avoiding surface damage such as scratches and indentations caused by direct contact with hard metal rollers. Based on this, the roller spacing in the processing section is reduced from 300mm to 150mm, and the increased number of roller shafts increases the number of support points for the workpiece, reducing sagging caused by the workpiece's own weight. At the same time, the transmission mechanism ensures that the linear speed of the processing section and the feeding section are consistent through differential speed adjustment, avoiding stretching or wrinkling of the workpiece during conveying. The V-shaped guide groove on the surface of the processing section roller engages with the edge of the workpiece, limiting lateral displacement of the workpiece through the side groove walls. This ensures that the centerline of the workpiece aligns with the centerline of the die during bending, providing a positioning reference for the precise bending of the hydraulic unit 101. When the hydraulic unit 101 initiates the bending action, the transmission mechanism can pause the conveying of the processing section according to the signal from the drive unit 103. Rotation resumes after bending is completed, achieving sequential coordination from conveying to pausing bending to resuming conveying, adapting to multi-pass bending processes. The processed workpiece is conveyed to the discharge section, where the transmission mechanism reduces its speed to ensure the workpiece arrives smoothly at the unloading area. The lifting mechanism of the discharge section starts upon receiving the signal from the drive unit 103, lifting the bottom of the workpiece, causing it to detach from the conveyor roller surface and tilt to a preset angle. The workpiece then slides into the receiving platform or conveyor line under gravity. After unloading, the lifting mechanism returns to its initial position, waiting for the next workpiece to enter, achieving continuous unloading.

[0045] As can be seen from the above implementation process, flexible contact reduces the surface scratch rate of workpieces, especially for high-precision workpieces, resulting in a lower surface defect rate. A 300mm roller gap ensures load-bearing stability while reducing the number of rollers to lower equipment costs, adapting to the initial conveying needs of large-sized workpieces. A 150mm roller gap doubles the density of workpiece support points, controlling deflection during conveying within ±1mm, preventing bending position offset due to workpiece sagging, and laying the foundation for subsequent processing accuracy. Furthermore, lateral limiting controls workpiece offset within ±0.3mm, ensuring the alignment accuracy between the bending centerline and the mold centerline, directly reducing problems such as angular deviations and bending asymmetry caused by positioning errors. Synchronizing the conveying and bending actions in the processing section avoids workpiece wrinkling or stretching due to asynchronous conveying and bending.

[0046] For example, the arched support material is an arched anchor cable beam. The arched structure itself possesses excellent mechanical properties, capable of transferring external loads to the foundations or support structures on both sides through the arch's curved surface, generating axial pressure within the structure and reducing the impact of bending stress. The anchor cable beam, through the tensioning action of the anchor cables, can apply preload to the surrounding rock or the supported structure, forming an integrated load-bearing system between the arched structure and the surrounding rock. This preload not only improves the stability of the surrounding rock itself but also enhances the load-bearing capacity of the arched anchor cable beam, enabling it to resist larger external loads. Furthermore, the arched anchor cable beam is made of high-strength materials, exhibiting high fatigue resistance and corrosion resistance. During long-term use, it can withstand repeated loads and environmental erosion, reducing damage and aging of the support structure and extending its service life.

[0047] For example, the cold bending machine also includes an early warning unit, which is located on the support plate and is used to monitor the operating status of the cold bending machine. When an abnormality is detected in the cold bending machine, an early warning is issued and the cold bending machine is controlled to stop running.

[0048] In practical applications, the aforementioned early warning unit can be a vibration sensor, temperature sensor, pressure sensor, etc., which will not be specifically listed here. The early warning unit collects the core operating parameters of the cold bending machine in real time through sensors. When a parameter exceeds a preset safety threshold, the early warning unit can quickly identify the abnormal state, preventing damage to core components due to the accumulation of minor faults and reducing the probability of major equipment overhaul. In the event of a serious abnormality, the early warning unit can directly trigger the equipment's emergency stop mechanism, cutting off the power output of the drive unit and hydraulic unit 101, preventing the fault from escalating at its source. Furthermore, the bending accuracy of the cold bending machine depends on the coordinated operation of hydraulic parameters, die positioning, and the conveying of the workpiece. The early warning unit can monitor key indicators such as the roller pressure in the processing section, the positioning deviation of the V-shaped guide groove, and the stability of the hydraulic bending force in real time. When parameters deviate from the process standards, it promptly issues an early warning and suspends processing. If processing accuracy issues arise due to a transmission unit malfunction or hydraulic unit parameter drift, the early warning unit can intervene promptly when defects appear in the first batch of workpieces, preventing the continuous scrapping of subsequent batches of workpieces and reducing raw material waste costs.

[0049] For example, such as Figure 1 As shown, the support plate 105 is a steel plate; the steel plate is made of Q690 high-strength steel plate. Under heavy loads, the support plate 105 made of Q690 steel plate is less prone to plastic deformation or fracture, providing stable support for the components above and ensuring the safe operation of the overall structure under high load conditions. As a support plate 105, its own deflection is reduced, providing a stable support reference for the components installed on it, avoiding problems such as component position displacement and decreased operational accuracy caused by deformation of the support plate 105, and improving the stability and reliability of the overall structure.

[0050] The above description is merely an illustration of some embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that the scope of this utility model is not limited to the specific combinations of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features of this utility model that have similar functions.

[0051] While specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A cold bending machine for processing arch support materials in underground arched roadways of coal mines, characterized in that, The cold bending machine includes: a hydraulic unit, a transmission unit, a drive unit, a measuring unit, and a support plate. The hydraulic unit, the transmission unit, the drive unit, and the measuring unit are all mounted on the support plate. The transmission unit is located at the first end of the support plate, and the drive unit is mounted on the transmission unit. The drive unit is used to drive the transmission unit to transmit the workpiece to be processed. The hydraulic unit is located at the second end of the support plate and is used to control the bending action of the workpiece; the measuring unit is located near the hydraulic unit and is used to measure the processing parameters of the workpiece.

2. The cold bending machine according to claim 1, characterized in that, The measurement unit includes a data acquisition subunit and a display subunit. The data acquisition subunit is used to acquire the curvature parameters of the workpiece during the bending process in real time, and the display subunit is used to display the curvature parameters acquired by the data acquisition subunit in real time.

3. The cold bending machine according to claim 1, characterized in that, When the drive unit sends a first signal, the hydraulic unit receives the first signal and adjusts the bending parameters of the hydraulic unit to adapt to workpieces of different specifications.

4. The cold bending machine according to claim 3, characterized in that, The hydraulic unit includes: A multi-stage hydraulic cylinder, wherein the stroke control accuracy of the multi-stage hydraulic cylinder reaches ±0.1mm; A proportional valve assembly is used to receive a first signal from the drive unit to adjust the bending force on the workpiece. A mold changing mechanism is used to change molds of different models.

5. The cold bending machine according to claim 1, characterized in that, The transmission unit is synchronized with the hydraulic unit to realize the automated bending process of the workpiece.

6. The cold bending machine according to claim 1, characterized in that, The transmission unit includes a conveying roller group and a transmission mechanism. The drive mechanism of the drive unit is connected to the transmission mechanism and is used to drive the conveying roller group to rotate in order to convey the workpiece to be processed.

7. The cold bending machine according to claim 6, characterized in that, The conveyor roller assembly adopts a segmented design, and the conveyor roller assembly includes: The feeding section has a roller spacing of 300mm and its surface is covered with a polyurethane layer. The processing section has a roller spacing of 150mm and is also equipped with a V-shaped guide groove. The discharge section is equipped with a lifting mechanism for automatic unloading.

8. The cold bending machine according to claim 1, characterized in that, The arched support material is an arched anchor cable beam.

9. The cold bending machine according to claim 1, characterized in that, The cold bending machine also includes an early warning unit, which is located on the support plate and is used to monitor the operating status of the cold bending machine. When an abnormality is detected in the cold bending machine, an early warning is issued and the cold bending machine is controlled to stop operating.

10. The cold bending machine according to claim 1, characterized in that, The support plate is a steel plate; the steel plate is made of Q690 high-strength steel plate.

Images