A disassembly and assembly device for wear-resistant sleeves of chain links and pins

Abstract

This utility model relates to the field of metallurgical equipment maintenance devices, and more specifically, to a chain link pin wear-resistant sleeve disassembly and assembly device. The chain link pin wear-resistant sleeve disassembly and assembly device provided by this utility model includes a hydraulic drive device, an ejection actuator, and a positioning platform. The hydraulic drive device drives the ejection actuator to eject the wear-resistant sleeve from the chain link pin hole, or press the wear-resistant sleeve into the chain link pin hole. The positioning platform includes a platform base, and positioning block one, positioning block two, and a V-shaped support seat mounted on the platform base. Positioning block one and positioning block two are detachable modular designs and are equipped with radial positioning pins to limit the horizontal displacement of the chain link. The inclined surface of the V-shaped support seat guides the edge of the chain link to the center, thereby constraining the lateral and jumping displacement of the chain link. The combined action of positioning block one, positioning block two, and the V-shaped support seat achieves rapid three-dimensional positioning of the chain link.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment maintenance devices, and more specifically, to a disassembly and assembly device for a chain link pin wear-resistant sleeve. Background Technology

[0002] Because cast iron machine chain links operate in a high-temperature and high-wear environment, their wear-resistant sleeves need to be replaced regularly.

[0003] Traditional dismantling methods have the following drawbacks: First, manual hammering can easily damage the chain link substrate, resulting in low dismantling efficiency and safety hazards. Second, the lack of specialized positioning tools and the interference fit between the wear-resistant sleeve and the chain link lead to increased jacking force due to manual misalignment. Third, discarded wear-resistant sleeves are scattered on-site, requiring secondary cleanup and potentially causing scratches to personnel. Fourth, traditional dismantling and assembly methods use equipment with limited functionality, separating dismantling and assembly operations, and the time required for spare parts conversion consumes significant maintenance time. Fifth, the edges of wear-resistant sleeves assembled with a sledgehammer are prone to burrs and chamfers due to impact, affecting the installation of subsequent connecting shafts. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a chain link pin wear-resistant sleeve disassembly and assembly device. It configures a matching positioning platform according to the structural characteristics of the chain link, and the positioning block one, positioning block two and V-shaped support seat installed on the positioning platform work together to achieve rapid three-dimensional positioning of the chain link. The wear-resistant sleeve is pushed out and pressed in by the bidirectional control of the hydraulic drive device, realizing non-destructive and rapid disassembly and assembly of the wear-resistant sleeve, solving the problems of high-precision positioning and force transmission stability, and achieving integrated disassembly and assembly operation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A chain link pin wear-resistant sleeve disassembly and assembly device includes a hydraulic drive device, an ejection actuator, and a positioning platform. The positioning platform is used to place the chain link to be processed. The ejection actuator includes a push rod. The hydraulic drive device includes a hydraulic cylinder. The hydraulic cylinder drives the push rod, and the push rod ejects the wear-resistant sleeve from the pin holes at both ends of the chain link. The two ends of the chain link are an open end and a closed end, respectively. The positioning platform includes a platform base, and a detachable modular positioning block one, a detachable modular positioning block two, and a V-shaped support seat installed on the platform base. The positioning block one is fitted onto the side of the chain link away from the push rod. The open end of the chain link has a receiving cavity, and the positioning block two is embedded in the receiving cavity. The V-shaped support seat has an inclined surface to guide the edge of the chain link to be centered and to constrain the lateral displacement and jumping displacement of the chain link.

[0007] Furthermore, the hydraulic cylinder is a bidirectional control hydraulic cylinder, and the ejection actuator also includes a liner plate installed on the working end of the ejector rod, with the end of the ejector rod away from the liner plate connected to the hydraulic cylinder.

[0008] Furthermore, the positioning platform also includes idler rollers and guide rails. The idler rollers include free rollers, the axis of which is perpendicular to the pushing direction of the chain links. The guide rails are located on both sides of the platform base.

[0009] Furthermore, at least two V-shaped support seats are provided, and several V-shaped support seats are respectively engaged with the open end and the closed end; the V-shaped support seats, the first positioning block and the second positioning block together restrict the displacement of the chain piece, forming a three-dimensional positioning.

[0010] Furthermore, one side of the positioning block 2 is fitted into the receiving cavity, so that three sides of the positioning block 2 are fitted into the opening end.

[0011] Furthermore, at least two positioning blocks are provided, the shape of which matches the platform base and the shape of which matches the pin hole; the V-shaped support is equipped with an angle fine-tuning screw.

[0012] Furthermore, the push rod has a built-in travel limiter, which includes a limit nut and a contact sensor.

[0013] Furthermore, it also includes a waste collection device, which includes a reinforcing rib plate, a discharge port, a collection cart, a viewing window, and a set of universal wheels. The reinforcing rib plate is located below the positioning platform and has a discharge port that matches the position of the pin hole. The collection cart is configured below the discharge port, and the viewing window is installed on the collection cart. The bottom of the collection cart is equipped with a set of universal wheels.

[0014] Furthermore, the collection vehicle is funnel-shaped and docks with the discharge port, and the central axes of the discharge port, the top rod, and the pin hole are located on the same axis.

[0015] Furthermore, the hydraulic drive device also includes a proportional control valve and a small mobile hydraulic station; one end of the proportional control valve is connected to the small mobile hydraulic station, the small mobile hydraulic station drives the hydraulic cylinder, the hydraulic cylinder pushes the push rod, the chain is pushed into the positioning platform, the V-shaped support seat clamps the chain, the positioning block one and the positioning block two limit the chain, and the push rod pushes the wear-resistant sleeve.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) This utility model achieves rapid three-dimensional positioning of the chain by configuring a matching positioning platform according to the structural characteristics of the chain piece, so that the positioning block one, positioning block two and V-shaped support seat installed on the positioning platform work together to achieve rapid three-dimensional positioning of the chain piece.

[0018] (2) The present invention adopts a push rod adapted to the wear-resistant sleeve structure to ensure that the wear-resistant sleeve is completely pushed away from the chain pin hole without damaging the base.

[0019] (3) This utility model is equipped with a waste collection device. The discharge port is matched with the position of the chain pin hole. A collection vehicle is configured below the discharge port. The collection vehicle and the discharge port adopt a funnel-type docking design to ensure that the ejected waste wear-resistant sleeves are automatically recycled.

[0020] (4) The hydraulic drive device of this utility model adopts a bidirectional control hydraulic cylinder as the active power source and integrates a foot pedal proportional directional valve to achieve seamless switching between push-out and push-in modes and accurately control the extension and retraction stroke and output force of the cylinder. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a partial structural diagram of the ejection actuator of this utility model;

[0023] Figure 3 This is a structural diagram of the chain links of this utility model after disassembly and assembly;

[0024] Figure 4 This is a schematic diagram of the chain piece in this utility model being positioned on the positioning platform and awaiting processing;

[0025] Figure 5 This is a cross-sectional view of the chain plate located on the positioning platform in this utility model;

[0026] Figure 6 This is a structural diagram of the positioning platform of this utility model;

[0027] Figure 7 This is a schematic diagram of the connection of multiple chain links according to this utility model;

[0028] Figure 8 This is a schematic diagram of the system of this utility model;

[0029] Figure 9 This is a schematic diagram of the structure of Embodiment 2 of the present invention. Figure 1 ;

[0030] Figure 10 This is a schematic diagram of the structure of Embodiment 2 of the present invention. Figure 2 ;

[0031] Figure 11 This is a flowchart of the wear-resistant sleeve replacement process of this utility model.

[0032] In the diagram: 11. Hydraulic cylinder; 12. Proportional control valve; 13. Small mobile hydraulic station; 21. Top rod; 22. Liner plate; 31. Platform base; 32. Positioning block one; 33. Positioning block two; 34. Idler roller; 35. V-shaped support seat; 41. Reinforcing rib plate; 42. Material drop port; 5. Chain link; 6. Wear-resistant sleeve. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Example 1:

[0036] Please see Figure 1-8 A chain link pin wear-resistant sleeve disassembly and assembly device includes a hydraulic drive device, an ejector mechanism, a positioning platform, and a waste collection device. The chain link 5 to be processed is installed on the positioning platform. The hydraulic drive device includes two hydraulic cylinders 11, which respectively push two sets of ejector mechanisms to enter the two pin holes of the chain link 5 installed on the positioning platform, thereby ejecting the wear-resistant sleeve 6 from the pin holes and realizing the disassembly of the wear-resistant sleeve 6. The disassembled wear-resistant sleeve 6 is recycled through the waste collection device.

[0037] like Figure 1-2 As shown, the ejector mechanism includes an ejector rod 21 and a laser-clad tungsten carbide wear-resistant liner 22 installed at the working end of the ejector rod 21. The end of the ejector rod 21 away from the liner 22 is connected to a hydraulic cylinder 11. The ejector rod 21 has a built-in stroke limiter, which includes a limit nut and a contact sensor. When the contact sensor detects that the wear-resistant sleeve has completed its displacement, the limit nut triggers the hydraulic cylinder 11 to drive the ejector rod 21 to return.

[0038] like Figure 4-6As shown, the positioning platform includes a platform base 31, and two positioning blocks 32, 33, rollers 34, guide rails, and several V-shaped support seats 35 mounted on the platform base 31. Positioning blocks 32 and 33 are detachable modular designs. The rollers 34 include several free rollers with their axes perpendicular to the pushing direction of the chain links 5 and their surfaces covered with ceramic to reduce frictional resistance, improve positioning efficiency, and reduce manpower consumption when pushing the chain links 5 to the processing station. The guide rails are located on both sides of the platform base 31 and are laser-calibrated to ensure that the straightness error is <0.1mm / m. The V-shaped support seats 35 are equipped with angle fine-tuning screws. The opening degree of the V-shaped support seats 35 is changed by the angle fine-tuning screws to compensate for the edge wear of the chain links 5. When the chain links 5 are pushed in, the inclined surface of the V-shaped support seats 35 automatically guides the edge of the chain links 5 to be centered, thereby constraining the jumping displacement of the chain links 5.

[0039] One end of the chain link 5 is an open end, and the other end is a closed end. The open end of the chain link 5 has a receiving cavity, and both the open and closed ends have pin holes. Figure 7 As shown, the open and closed ends of multiple chain pieces 5 are connected in sequence and then connected with pins to form a chain.

[0040] After the chain link 5 is pushed into the positioning platform via the guide rail, the V-shaped support 35 automatically clamps the edges of the open and closed ends of the chain link 5. Positioning block 1 32 is installed on the side of the chain link 5 away from the top rod 21; positioning block 2 33 is embedded in the receiving cavity of the open end of the chain link 5; the two positioning blocks 1 32 are respectively fitted and installed against the open and closed ends of the chain link 5. Positioning blocks 1 32, positioning blocks 2 33 and V-shaped support 35 match the structure of the chain link 5 and the platform base 31 so that when the chain link 5 is pushed to the work position, the V-shaped support 35, positioning blocks 1 32 and positioning blocks 2 33 together restrict the displacement of the chain link 5, thereby forming three-dimensional positioning.

[0041] like Figure 8 As shown, the waste collection device includes a reinforcing rib plate 41, a discharge port 42, a collection cart, a viewing window, and a set of casters. The reinforcing rib plate 41 is located on the positioning platform near the ground. The discharge port 42 is opened on the reinforcing rib plate 41, and the position of the discharge port 42 matches the position of the pin hole of the chain link 5 so that the detached wear-resistant sleeve 6 can enter the discharge port 42. A movable waste collection cart is arranged below the discharge port 42. The collection cart is equipped with a viewing window for observing the collection situation. The bottom of the collection cart is equipped with a set of stainless steel rust-proof casters, which can achieve easy transportation under full load. The collection cart and the discharge port 42 adopt a funnel-type docking design to ensure that the ejected waste wear-resistant sleeve 6 is automatically recycled.

[0042] When removing the wear-resistant sleeve 6, the chain link 5 is pushed into the positioning platform along the guide rail. The V-shaped support seat 35 automatically clamps the edge of the chain link 5. Positioning block 1 32 and positioning block 2 33 respectively restrict the open end and closed end of the chain link 5. The hydraulic cylinder 11 drives the push rod 21 to advance. When the contact sensor detects that the wear-resistant sleeve 6 has completed its displacement, the limit nut triggers the hydraulic cylinder 11 to return. The waste wear-resistant sleeve 6 falls into the collection vehicle through the discharge port 42.

[0043] When installing the wear-resistant sleeve 6, insert the new wear-resistant sleeve 6 into the working end of the push rod 21, and reverse the operation of the hydraulic cylinder 11. The new wear-resistant sleeve 6 is pressed into the pin hole, while the old wear-resistant sleeve 6 is pushed out.

[0044] Among them, the hydraulic cylinder 11 can be a high-thrust hydraulic cylinder with a rated output of 10 tons and a stroke of 250m; the ejection actuator adopts a customized alloy ejector rod 21, the working end of the ejector rod 21 is laser-clad with a tungsten carbide wear-resistant liner plate 2 with a thickness ≥3mm, the stroke limiter adopts a mechanical stroke limiter, and the dovetail groove locking mechanism is a magnetic suction sorting component.

[0045] The platform base 31 of the positioning platform is made of high-rigidity 16MnCr5 alloy steel with a hardness of HRC45 and a deformation load resistance of ≥15 tons; the positioning block 1 32 and positioning block 2 33 are made of hard alloy with a repeatability accuracy of ±0.1mm; the V-shaped support seat 35 is equipped with an angle fine-tuning screw to compensate for the wear of the chain link 5 edge by ±5mm; the friction coefficient of the ceramic-coated roller 34 is ≤0.05; the straightness error of the guide rail laser calibration is <0.1mm / m, and the pushing deviation angle of the chain link 5 is <0.5°.

[0046] The waste collection device has a 60mm diameter discharge port 42 with a polyurethane noise reduction layer inside; the collection vehicle and the discharge port 42 have a 60° taper angle in a funnel-shaped docking to ensure zero splashing of waste.

[0047] This utility model achieves the disassembly and replacement of wear-resistant sleeves by using a hydraulic cylinder 11 with dual-mode switching. The hydraulic dual-mode switching time is less than 1 second (traditional equipment requires 15 minutes for reassembly), the single-piece operation time is reduced from 90 seconds to 12 seconds, and the production line downtime is reduced by 86%, which greatly improves the disassembly and assembly efficiency.

[0048] Through the synergistic effect of the V-shaped support 35, positioning block 1 32 and positioning block 2 33, the positioning accuracy has achieved a breakthrough, with the three-dimensional spatial positioning error ≤ ±0.2mm (compared to ±5mm by traditional methods), and the damage rate of the chain link 5 substrate has been reduced from 15% to 0.3%. Through the synergistic effect of the idler roller 34 and the guide rail, the pushing resistance has been reduced by 82% (measured from 350N to 63N), which has improved the positioning accuracy while reducing the energy consumption required during the pushing process.

[0049] Example 2:

[0050] Please see Figure 1-10 According to the chain link pin wear-resistant sleeve disassembly and assembly device described in Embodiment 1, such as Figure 9 , 10 As shown, unlike Embodiment 1, the hydraulic drive device includes only one hydraulic cylinder 11, which drives the push rod 21 to sequentially push into the pin holes at the open and closed ends of the chain link 5.

[0051] Example 3:

[0052] Please see Figure 1-11 According to the chain link pin wear-resistant sleeve disassembly and assembly device described in Embodiment 1, such as Figure 8 As shown, the hydraulic drive device also includes a proportional control valve 12 and a small mobile hydraulic station 13. One end of the proportional control valve 12 is connected to the small mobile hydraulic station 13, and the small mobile hydraulic station 13 drives the hydraulic cylinder 11, which in turn pushes the push rod 21.

[0053] Chain link 5 is pushed into the positioning platform, V-shaped support seat 35 clamps chain link 5, positioning block 1 32 and positioning block 2 33 limit chain link 5, and top rod 21 pushes wear-resistant sleeve 6 in the pin hole of chain link 5, and wear-resistant sleeve 6 falls into the discharge port 42.

[0054] The proportional control valve 12 adopts a foot-operated integrated pressure regulating module, with an adjustable output force of 1-10 tons.

[0055] Includes the following steps:

[0056] S1. Push chain link 5 along the guide rail;

[0057] S2. V-shaped support seat 35 clamps the edge of chain piece 5;

[0058] S3. Positioning block 1 32 and positioning block 2 33 position chain piece 5;

[0059] S4. The pedal ratio control valve 12 drives the push rod 21 to push out the old wear-resistant sleeve 6;

[0060] S5. The old wear-resistant sleeve 6 enters the discharge port 42 and falls into the collection vehicle;

[0061] S6. Place the new wear-resistant sleeve 6 at the working end of the push rod 21, and reverse the hydraulic system to press the new wear-resistant sleeve 6 into the pin hole.

Claims

1. A disassembly and assembly device for a chain link pin wear-resistant sleeve, characterized in that: The system includes a hydraulic drive unit, an ejector mechanism, and a positioning platform. The positioning platform is used to place the chain segment (5) to be processed. The ejector mechanism includes an ejector rod (21). The hydraulic drive unit includes a hydraulic cylinder (11). The hydraulic cylinder (11) drives the ejector rod (21). The ejector rod (21) ejects the wear-resistant sleeves (6) from the pin holes at both ends of the chain segment (5). The two ends of the chain segment (5) are an open end and a closed end, respectively. The positioning platform includes a platform base (31) and a mounting base. The platform base (31) has a detachable modular positioning block 1 (32), a detachable modular positioning block 2 (33), and a V-shaped support seat (35); the positioning block 1 (32) is fitted to the side of the chain piece (5) away from the top rod (21); the open end of the chain piece (5) is provided with a receiving cavity, and the positioning block 2 (33) is embedded in the receiving cavity; the V-shaped support seat (35) is provided with an inclined surface, which is used to guide the edge of the chain piece (5) to be centered and to constrain the lateral displacement and jumping displacement of the chain piece (5).

2. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 1, characterized in that: The hydraulic cylinder (11) is a bidirectional control hydraulic cylinder. The ejection actuator also includes a liner (22) installed on the working end of the ejector rod (21). The end of the ejector rod (21) away from the liner (22) is connected to the hydraulic cylinder (11).

3. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 1, characterized in that: The positioning platform also includes a roller (34) and a guide rail. The roller (34) includes a free roller, the axis of which is perpendicular to the pushing direction of the chain (5). The guide rail is located on both sides of the platform base (31).

4. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 1, characterized in that: At least two V-shaped support seats (35) are provided, and several V-shaped support seats (35) are respectively engaged with the open end and the closed end; the V-shaped support seats (35), the first positioning block (32) and the second positioning block (33) together restrict the displacement of the chain piece (5) to form a three-dimensional positioning.

5. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 4, characterized in that: The second positioning block (33) is attached to the cavity on one side, so that the third side of the second positioning block (33) is attached to the opening end.

6. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 5, characterized in that: At least two positioning blocks (32) are provided. The shape of the positioning block (32) matches the platform base (31), and the shape of the positioning block (32) matches the pin hole. The V-shaped support (35) is equipped with an angle fine-tuning screw.

7. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 1, characterized in that: The top rod (21) has a built-in travel limiter, which includes a limit nut and a contact sensor.

8. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 1, characterized in that: It also includes a waste collection device, which includes a reinforcing rib plate (41), a discharge port (42), a collection vehicle, a viewing window, and a set of universal wheels. The reinforcing rib plate (41) is located below the positioning platform. The reinforcing rib plate (41) has a discharge port (42). The discharge port (42) matches the position of the pin hole. The collection vehicle is configured below the discharge port (42). The collection vehicle is equipped with a viewing window and a set of universal wheels at the bottom.

9. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 8, characterized in that: The collection vehicle is funnel-shaped and connected to the discharge port (42). The central axis of the discharge port (42), the top rod (21), and the pin hole are located on the same axis.

10. The chain link pin wear-resistant sleeve disassembly and assembly device according to claim 1, characterized in that: The hydraulic drive device also includes a proportional control valve (12) and a small mobile hydraulic station (13); one end of the proportional control valve (12) is connected to the small mobile hydraulic station (13), the small mobile hydraulic station (13) drives the hydraulic cylinder (11), the hydraulic cylinder (11) pushes the push rod (21), the chain piece (5) is pushed into the positioning platform, the V-shaped support seat (35) clamps the chain piece (5), the positioning block one (32) and the positioning block two (33) limit the chain piece (5), and the push rod (21) pushes the wear-resistant sleeve (6).

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