Online precise machining tool and machining method for shaft end of walking trolley of stacker-reclaimer

Abstract

The invention relates to a stacker-reclaimer walking trolley axle end online precise machining tool and a machining method.The stacker-reclaimer walking trolley axle end online precise machining tool comprises a bottom plate, a threaded hole, a ball type linear sliding block, a base plate, a bearing seat, a lead screw, a sliding rail, a worm and gear speed reducer, a handle and a supporting platform, the supporting platform is used for being connected with a walking trolley, and a horizontal base plate is arranged on the upper portion of the supporting platform; a sliding rail is arranged on the base plate, a bottom plate is arranged on the sliding rail, a ball type linear sliding block is arranged at the lower end of the bottom plate, the bottom plate is connected with the sliding rail in a matched mode through the ball type linear sliding block, a threaded hole is further formed in the lower end of the bottom plate, a worm and gear speed reducer is arranged at the right end of the base plate, and a drilling and milling machine is arranged on the bottom plate and provided with a detachable connector. And the rapid connection with the drilling module, the boring module and the cutting blade module is realized, so that the rapid removal of the pin shaft is realized.

Description

Technical Field

[0001] This invention relates to an online precision machining tool and machining method for the axle end of a stacker-reclaimer traveling trolley, belonging to the field of machining tools. Background Technology

[0002] Stacker-reclaimers are widely used in bulk cargo unloading scenarios such as bulk cargo terminals, storage yards, and power plants. They mainly consist of a traveling mechanism, a slewing mechanism, a pitching mechanism, a cantilever mechanism, a bucket wheel mechanism, and a tail car mechanism. As a core piece of equipment in coal terminals, the traveling mechanism of the stacker-reclaimer, composed of multiple trolleys, inevitably experiences wear and deformation of its pins and shaft holes due to frequent friction and stress. This situation not only directly affects the normal operating efficiency of the stacker-reclaimer but also poses a serious safety hazard to its operation.

[0003] Traditional methods for replacing and repairing worn pins have several drawbacks: Jacking method: Due to the long length of the pin and the jamming between it and the hole, it is difficult to remove smoothly. Forcing the pin out can easily cause deformation of the steel structure, often exceeding 0.5mm. This not only further damages the equipment and increases repair costs and difficulty, but also has a success rate of less than 60%. Pneumatic planing method: This method involves directly thermally cutting off the pin. It is a destructive removal method, time-consuming, and the removed parts cannot be reused, resulting in a 100% scrap rate for spare parts. Furthermore, it causes significant thermal deformation at the equipment installation location, exceeding 1.2mm, severely affecting the subsequent installation accuracy and operational stability. The cutting process can also generate thermal stress cracks with a depth ≥3mm, greatly damaging the structural strength of the equipment and reducing the service life of the repaired equipment.

[0004] In summary, traditional dismantling methods can deform the installation location of the main equipment during the dismantling process, seriously impairing the operational accuracy of the equipment. At the same time, they introduce thermal and mechanical stress, causing irreversible damage to the equipment, significantly shortening its service life, increasing the risk of equipment failure and maintenance costs, and seriously restricting the efficient and stable operation of coal terminals.

[0005] To address the aforementioned technical problems, this invention provides an innovative online precision machining tool and method for the shaft ends of stacker-reclaimer traveling trolleys. This aims to completely resolve the issues of significant equipment damage, difficulty in guaranteeing machining accuracy, and high maintenance costs associated with traditional pin removal and machining methods. Through this machining tool and method, efficient, precise, and non-destructive machining of the shaft ends of stacker-reclaimer traveling trolleys can be achieved, ensuring safe and stable equipment operation, significantly reducing maintenance costs, and improving the overall operational efficiency of coal terminals.

[0006] Furthermore, in traditional tooling systems, coolant injection pressure and other parameters are adjusted by regulating the pump. However, dynamic adjustments are cumbersome, can easily damage the pump, lack fine-tuning of the flow path, and result in pressure loss of the coolant during flow. In contrast, clever adjustments to the flow path offer greater flexibility. Summary of the Invention

[0007] To address the problems of equipment damage during processing and the inability to adjust coolant flow rate and pressure, this invention proposes a technical solution that cleverly adjusts coolant flow rate and pressure without damaging the equipment. It also incorporates a buffer structure to prevent damage to the processing tool's internal components due to instantaneous changes in coolant pressure. The solution is as follows:

[0008] A precision online machining tool for the shaft end of a stacker-reclaimer traveling trolley includes a base plate, threaded holes, a ball-type linear slider, a base plate, a bearing seat, a lead screw, a slide rail, a worm gear reducer, a handle, and a support platform. The support platform connects to the traveling trolley. A horizontal base plate is mounted on the upper part of the support platform, a slide rail is mounted on the base plate, and the base plate is mounted on the slide rail. A ball-type linear slider is mounted on the lower end of the base plate, and the base plate is connected to the slide rail via the ball-type linear slider. A threaded hole is also provided at the lower end of the base plate. A worm gear reducer is mounted on the right end of the base plate. The handle connects to the input end of the worm gear reducer, and a lead screw is mounted on the output end of the worm gear reducer. The lead screw engages with the threaded hole to move the base plate. A drilling and milling machine is mounted on the base plate, and the drilling and milling machine has a detachable interface for quick connection to a drilling module, a boring module, and a cutting disc module.

[0009] Furthermore, the support platform is a right-angled triangular vertical plate, with one right-angled side of the right triangle adjacent to the horizontal base plate, and two protrusions, which are electromagnets, provided on the left side of the other right-angled side of the right triangle.

[0010] Furthermore, there are two slide rails, symmetrically arranged on both sides of the lead screw.

[0011] Furthermore, the detachable interface includes a connector, with a circular groove provided at the left end of the connector 20, and fasteners provided on the outer wall of the connector to lock and fix the drilling module, boring module, and cutting disc module.

[0012] Furthermore, the drilling module, boring module, and cutting disc module all include end connectors that are compatible with the connectors. The end connectors are provided with coolant channels through which coolant passes. The tool heads of the drilling module, boring module, and cutting disc module are provided with coolant outlets at the non-machined tool base or tool head portion, and these outlets are connected to the coolant channels.

[0013] Furthermore, a second coolant channel is provided inside the connector, and the outlet section of the second coolant channel is located at the bottom end of the circular groove of the connector. The second coolant channel is connected to the coolant channel.

[0014] Furthermore, an expansion bladder is provided on the inner wall of the coolant passage two. By expanding the expansion bladder, the inner diameter of the coolant passage two is changed, thereby changing the flow rate and / or outlet pressure of the coolant.

[0015] Furthermore, it also includes an alignment part, which includes a limiting groove and a limiting protrusion. The limiting groove is located at the left end of the connector, and the limiting protrusion is located on the outer side wall of the end connector. When the limiting groove and the limiting protrusion cooperate with each other, the coolant channel two is aligned with the coolant channel.

[0016] Furthermore, both the second coolant passage and the multiple coolant passages are present.

[0017] Furthermore, it also includes an adjusting ring, which is rotatably connected to the connector. The adjusting ring rotates around the axis of the connector and is provided with an annular through hole. By rotating the adjusting ring, the overlap area between the annular through hole and the second coolant channel is adjusted.

[0018] Furthermore, the annular through-hole has multiple width variation areas along the circumference, and the annular through-hole rotates continuously, thus changing the overlap area between the annular through-hole and the second coolant channel.

[0019] Furthermore, it also includes a buffer structure, which is set on the contact surface between the adjusting ring and the connector. The buffer structure includes an annular groove one, an annular groove two, a compression spring, and an annular compression plate. Annular groove one is set on the right side of the connector, and annular groove two is set on the left side of the adjusting ring. Annular groove one and annular groove two together form a buffer cavity. Buffer mechanisms are set on both the left and right sides of the buffer cavity. The buffer mechanism includes a compression spring and a compression plate. One end of the two compression springs is set on annular groove one and annular groove two respectively, and the other end is connected to the annular compression plate.

[0020] Furthermore, the present invention also provides a sealing structure, which includes a sealing ring. The sealing ring is in the shape of an annular arrow, and the tail end of the annular connector is square. It is set in the groove formed by the adjusting ring and the connector. The arrow of the sealing ring points inward and passes through the top of the buffer cavity formed by the first annular groove and the second annular groove, sealing the top space.

[0021] The beneficial effects of this invention are:

[0022] 1. The drilling and milling machine of the present invention is equipped with a detachable interface, which enables quick connection with the drilling module, boring module and cutting disc module. Thus, drilling, boring and cutting disc cutting can be performed to remove the pin without changing equipment, and all can be done on a single processing tool without multiple alignments.

[0023] 2. This invention can be quickly connected to a traveling trolley via an electromagnet, enabling connection with different trolleys and thus making it suitable for various trolleys.

[0024] 3. The present invention is equipped with an expansion air bladder, which changes the orifice diameter of the flow path by expanding and contracting the expansion air bladder, thereby regulating the coolant pressure.

[0025] 4. The present invention is provided with an adjustment ring, on which an annular through hole is provided. The width of the annular through hole varies in the circumferential direction, thereby adjusting the overlap area between the annular through hole and the second coolant channel by rotation, so as to adjust parameters such as pressure and flow rate.

[0026] 5. The present invention also includes a buffer structure to adaptively reduce the impact on the processing tool caused by pressure changes when the adjusting ring rotates.

[0027] 6. The present invention also includes a sealing structure, which ensures sealing while guiding the coolant, and the impact of the coolant also enhances the sealing performance. Attached Figure Description

[0028] Figure 1 These are the front view and left view of the present invention.

[0029] Figure 2 These are the front view and left view of the drilling and milling machine of the present invention.

[0030] Figure 3 These are the front view, left view, and bottom view of the drilling and milling machine base of the present invention.

[0031] Figure 4 These are the front view, top view, and right view of the slide rail platform of the present invention.

[0032] Figure 5 These are the front view and left view of the handle of this invention.

[0033] Figure 6 These are the front view and left view of the lead screw of the present invention.

[0034] Figure 7 These are the front view, left view, and top view of the support platform of this invention.

[0035] Figure 8 This is the front view when the present invention is in use.

[0036] Figure 9 This is the left view when the invention is in use;

[0037] Figure 10 This is a schematic diagram of the detachable interface of the present invention;

[0038] Figure 11 This is a schematic diagram of the adjusting ring of the present invention;

[0039] Figure 12 This is a schematic diagram of the buffer structure of the present invention. Specific implementation methods

[0040] See Figure 1-12 This invention designs an online precision machining tool for the shaft end of a stacker-reclaimer traveling trolley, comprising a base plate 2, a threaded hole 3, a ball-bearing linear slider 4, a base plate 5, a bearing seat 6, a lead screw 7, a slide rail 8, a worm gear reducer 9, a handle 10, and a support platform 11. The support platform 11 is used to connect to the traveling trolley 12. A horizontal base plate 5 is mounted on the upper part of the support platform 11, and a slide rail 8 is mounted on the base plate 8. The base plate 2 is mounted on the lower end of the base plate 2. 4. The base plate 2 is connected to the slide rail 8 through a ball-type linear slider 4. The lower end of the base plate 2 is also provided with a threaded hole 3. The right end of the base plate 5 is provided with a worm gear reducer 9. The handle 10 is connected to the input end of the worm gear reducer 9. The output end of the worm gear reducer 9 is provided with a lead screw 7. The lead screw 7 cooperates with the threaded hole 3 to drive the movement of the base plate 2. A drilling and milling machine is provided on the base plate 2. The drilling and milling machine 1 is provided with a detachable interface to realize quick connection with the drilling module, boring module, and cutting disc module. When a worn pin is found, the support platform 11 is connected to the traveling trolley 12. The rotation of the lead screw 7 drives the base plate 2 to move horizontally. The drilling and milling machine 1 is connected to the drilling module, which includes a drill bit to drill the worn pin. Then, the boring module is replaced, which includes a boring tool. The hole is expanded by boring, further reducing the thickness of the hole wall of the worn pin. Then, the cutting blade module is replaced, which includes a cutting blade. The cutting blade rotates to cut the weakened hole wall of the worn pin, ultimately achieving the purpose of removing the worn pin.

[0041] Furthermore, the support platform 11 is a right-angled triangular vertical plate. One right-angled side of the right-angled triangle is adjacent to the horizontal base plate 5. Two protrusions are provided on the left side of the other right-angled side of the right-angled triangle. The protrusions are electromagnets. The electromagnets are conventional electromagnets in the prior art. The above structural design can be used to adjust the height of the support platform 11 by pushing the hypotenuse of the right-angled triangle through a horizontal push plate, etc. After adjusting to a suitable height, the electromagnet is activated to connect the support platform 11 with the traveling trolley 12.

[0042] Furthermore, there are two slide rails 8, symmetrically arranged on both sides of the lead screw 7.

[0043] Furthermore, the detachable interface includes a connector 20, with a circular groove at the left end of the connector 20. The outer wall of the connector 20 is provided with fasteners or other means to lock and fix the drilling module, boring module, and cutting disc module. The fasteners are not shown in the figure. This fixing method is a conventional fixing structure in the machining field.

[0044] Furthermore, the drilling module, boring module, and cutting disc module all include end connectors 21 that are adapted to the connector 20. The end connector 21 has a coolant channel 24 for coolant passage. The cutting tool heads of the drilling module, boring module, and cutting disc module are provided with coolant outlets at the non-machined tool base or tool head portion. These outlets are connected to the coolant channel 24 to spray coolant during the cutting process, thereby achieving cooling and chip removal during the machining process.

[0045] Furthermore, a second coolant channel 26 is provided inside the connector 20, and the outlet section of the second coolant channel 26 is located at the bottom end of the circular groove of the connector 20. The second coolant channel 26 communicates with the coolant channel 24.

[0046] Furthermore, an expansion bladder 28 is provided on the inner wall of the coolant passage 26. The expansion of the expansion bladder 28 changes the inner diameter of the coolant passage 26, thereby changing the flow rate and outlet pressure of the coolant.

[0047] Furthermore, in order to ensure that the coolant channel 26 and the coolant channel 24 can be accurately aligned, the present invention also provides an alignment part, which includes a limiting groove 29 and a limiting protrusion 22. The limiting groove is located at the left end of the connector 20, and the limiting protrusion 22 is located on the outer side wall of the end connector 21. When the limiting groove 29 and the limiting protrusion 22 cooperate with each other, the coolant channel 26 and the coolant channel 24 are aligned to realize the delivery of coolant.

[0048] Furthermore, both coolant passage 26 and coolant passage 24 are multiple.

[0049] Furthermore, it also includes an adjusting ring 25, which is rotatably connected to the connector 20. The adjusting ring 25 rotates around the axis of the connector 20. The adjusting ring 25 is provided with an annular through hole 27. By rotating the adjusting ring 25, the overlap area between the annular through hole 27 and the coolant channel 26 is adjusted, thereby further changing the speed and pressure of the coolant in the flow channel. This achieves better cooling and removal of debris when the coolant flows out of the drilling module, boring module, and cutting blade module. When faced with debris that is difficult to remove, by continuously changing the coolant pressure, the relatively stable pressure makes it easier to remove debris. At the same time, it also avoids the risk of leakage caused by high-pressure coolant for a long time.

[0050] Furthermore, the annular through hole 27 has multiple width variation areas along the circumference, and the annular through hole 27 rotates continuously, thereby changing the overlap area between the annular through hole 27 and the coolant channel 26.

[0051] Furthermore, to avoid the impact on the equipment when the area of ​​the annular through hole 27 and the coolant channel 26 changes, the present invention also provides a buffer structure. The buffer structure is set on the contact surface of the adjusting ring 25 and the connector 20. The buffer structure includes an annular groove 1, an annular groove 2, a compression spring, and an annular compression plate 31. Annular groove 1 is set on the right side of the connector 20, and annular groove 2 is set on the left side of the adjusting ring 25. Annular groove 1 and annular groove 2 together form a buffer cavity. Buffer mechanisms are set on both the left and right sides of the buffer cavity. The buffer mechanism includes a compression spring and a compression plate 31. One end of the two compression springs is set on annular groove 1 and annular groove 2 respectively, and the other end is connected to annular compression plate 21. The coolant flows into annular groove 1 or annular groove 2 and interacts with compression plate 31 to achieve buffering of liquid pressure and avoid excessive fluctuation of liquid pressure.

[0052] Furthermore, the present invention also includes a sealing structure, which includes a sealing ring 30. The sealing ring 30 is in the shape of an annular arrow, and the tail end of the annular connector is square. It is set in the groove formed by the adjusting ring 25 and the connector 20 to achieve better positioning of the sealing ring 30. The arrow of the sealing ring 30 points inward and passes through the top of the buffer cavity formed by the first annular groove and the second annular groove, sealing the top space. The arrow part can realize the diversion of coolant to both sides, and at the same time play a better sealing role.

[0053] The present invention further includes a technical method for online precision machining of tools at the axle end of a stacker-reclaimer traveling trolley, comprising the following steps:

[0054] Step 1, Platform Installation: Secure the support platform 11 to the traveling trolley 12 using protrusions.

[0055] Step Two, Machining Process: Install the drilling module, select a φ60 drill bit, and start drilling after accurate alignment. During drilling, the coolant flow rate is controlled at 6L / min to ensure good drill bit cooling. After drilling, install the boring module, select the initial boring bar diameter, and enlarge the hole multiple times while spraying coolant. Boring accuracy is not required during boring. Finally, use the cutting disc module, controlling the cutting speed at 40m / s and the angle between the cutting disc and the pin surface at 50°. Turn on the coolant. During machining, adjust the expansion bladder 28 according to specific cooling requirements to select the appropriate flow inner diameter of the coolant channel 26. Simultaneously, the drive motor rotates the adjusting ring 25 to continuously change the coolant pressure.

[0056] Step 3, Quality Acceptance: During and after dismantling, inspect the shaft hole and other related parts of the equipment. By continuously collecting data, establish a large model, and use machine learning to provide a basis for adjusting the speed of the inflatable airbag 28 and the regulating ring 25.

[0057] This invention is not limited to the embodiments listed above. Any equivalent modifications or improvements made based on the technical solutions of this invention are considered to be within the scope of protection of this invention.

Claims

1. An online precision machining tool for the shaft end of a stacker-reclaimer traveling trolley, comprising a base plate, threaded holes, a ball-bearing linear slider, a base plate, a bearing seat, a lead screw, a slide rail, a worm gear reducer, a handle, and a support platform, wherein, The support platform is used to connect with the traveling trolley. A horizontal base plate is set on the upper part of the support platform, a slide rail is set on the base plate, and a base plate is set on the slide rail. A ball-type linear slider is set at the lower end of the base plate. The base plate is connected to the slide rail through the ball-type linear slider. A threaded hole is also set at the lower end of the base plate. A worm gear reducer is set at the right end of the base plate. A handle is connected to the input end of the worm gear reducer. A lead screw is set at the output end of the worm gear reducer. The lead screw and the threaded hole drive the movement of the base plate. A drilling and milling machine is set on the base plate. The drilling and milling machine is equipped with a detachable interface to realize quick connection with the drilling module, boring module, and cutting disc module. The support platform is a right-angled triangular vertical plate. One right-angled side of the right triangle is adjacent to the horizontal base plate. Two protrusions are set on the left side of the other right-angled side of the right triangle. The protrusions include electromagnets.

2. The online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claim 1, characterized in that: There are two slide rails, symmetrically arranged on both sides of the lead screw.

3. The online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claim 1, characterized in that: The detachable interface includes a connector with a circular groove on the left end and fasteners on the outer wall of the connector to lock and fix the drilling module, boring module and cutting disc module.

4. The online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claim 3, characterized in that: The drilling module, boring module, and cutting disc module all include end connectors that are compatible with the connector. The end connectors have coolant channels for coolant to pass through. The tool heads of the drilling module, boring module, and cutting disc module all have coolant outlets at the non-machined tool base or tool head, and these outlets are connected to the coolant channels.

5. The online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claim 4, characterized in that: The connector has a second coolant channel inside, and the outlet section of the second coolant channel is located at the bottom of the circular groove of the connector. The second coolant channel is connected to the coolant channel.

6. The online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claim 5, characterized in that: An expansion bladder is installed on the inner wall of the coolant passage 2. The expansion of the expansion bladder changes the inner diameter of the coolant passage 2, thereby changing the flow rate and / or outlet pressure of the coolant.

7. The online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claim 6, characterized in that: It also includes an alignment part, which includes a limiting groove and a limiting protrusion. The limiting groove is located at the left end of the connector, and the limiting protrusion is located on the outer side wall of the end connector. When the limiting groove and the limiting protrusion cooperate with each other, the coolant channel two is aligned with the coolant channel.

8. The online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claim 7, characterized in that: It also includes an adjusting ring, which is rotatably connected to the connector. The adjusting ring rotates around the axis of the connector and is provided with an annular through hole. By rotating the adjusting ring, the overlap area between the annular through hole and the second coolant channel is adjusted.

9. The online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claim 8, characterized in that: The annular through-hole has multiple width variations along its circumference. As the annular through-hole rotates continuously, the overlap area between the annular through-hole and the second coolant channel changes.

10. A machining method for an online precision machining tool for the axle end of a stacker-reclaimer traveling trolley according to claims 1-9, comprising the following steps: Step 1, Platform Installation: Secure the support platform to the traveling trolley using the protrusions. Step Two, Machining Process: Install the drilling module, select a φ60 drill bit, and start drilling after accurate alignment. During drilling, control the coolant flow rate at 6L / min to ensure good drill bit cooling. After drilling, install the boring module, select the initial boring bar diameter, and enlarge the hole multiple times while spraying coolant. No precision is required during boring. Finally, use the cutting disc module, controlling the cutting speed at 40m / s and the angle between the cutting disc and the pin surface at 50°. Turn on the coolant. During machining, adjust the expansion bladder according to specific cooling requirements to select the appropriate flow inner diameter of coolant channel two. Simultaneously, the drive motor rotates the adjusting ring to continuously change the coolant pressure. Step 3, Quality Acceptance: During and after dismantling, inspect the shaft hole and other related parts of the equipment. By continuously collecting data, establish a large model, and use machine learning to provide a basis for adjusting the speed of the expansion airbag and regulating ring.

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