An engineering cylinder dismounting device

Abstract

The utility model discloses an engineering oil cylinder dismounting equipment, including base, the base one end is provided with ratchet wheel device, and the other end is provided with tail end fixing part, and the base between both has intermediate fixing part, ratchet wheel device includes ratchet wheel disc, and the telescopic cylinder that drives its rotation is installed respectively on ratchet wheel disc both ends upside and downside, the inside of ratchet wheel disc is provided with mounting disc, and the inside of mounting disc is symmetrically spaced and is installed with two limit plates, and the oil cylinder fixing part is detachably fixed between two limit plates and mounting disc, and through the fixed column passes through oil cylinder pipe fixing part and first oil cylinder end portion and fixes both. Through the combination structure of the mounting disc of ratchet wheel device inside, limit plate and detachable oil cylinder fixing part, can adapt the engineering oil cylinder of two ends with annular lug plate, utilizes the through -hole of fixed column to pass through oil cylinder fixing part and oil cylinder end lug plate, realizes the stable clamping to lug plate structure, breaks through the limitation that traditional spanner type fixing device can not adapt lug plate structure.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder disassembly and assembly technology, specifically to an engineering hydraulic cylinder disassembly and assembly device. Background Technology

[0002] In the field of mining technology, hydraulic cylinders are frequently used, and their quality directly affects the safety of the entire mining area. Therefore, regular inspection and maintenance of hydraulic cylinders are necessary. During inspection, maintenance, or retrieval of hydraulic cylinders, disassembly equipment is required to disassemble them. Based on their usage, the applicant primarily designs vertical and horizontal types. Both share the characteristic of fixing and rotating the top or bottom of the hydraulic cylinder. The applicant's earlier patent application, CN221716731U, discloses a horizontal disassembly and assembly machine hydraulic support fixing device, mainly... This involves a support device for hydraulic cylinders in horizontal disassembly and assembly equipment, ensuring the stability of the hydraulic cylinders to be disassembled and assembled. Although the fixing device for the disassembly and assembly end is not disclosed, existing fixing devices, such as the one disclosed in patent number CN218695836U, are cylinder disassembly machines. The disassembly mechanism 104 is a common disassembly device. In the figure, it is fixed to the cylinder end by a wrench. However, in actual use, it is difficult to fix and disassemble engineering cylinders with annular lugs at both ends. Secondly, for most lifting cylinders, the protruding end is easy to block the disassembly device, making it impossible to fix the end. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model provides an engineering hydraulic cylinder disassembly and assembly device.

[0004] The technical solution of this utility model is as follows:

[0005] An engineering hydraulic cylinder disassembly and assembly device includes a base, a ratchet device is provided at one end of the base, a tail end fixing member is provided at the other end, and an intermediate fixing member is provided on the base between the two.

[0006] The ratchet device includes a ratchet disc, and telescopic cylinders for driving its rotation are installed at both ends of the ratchet disc.

[0007] The inner side of the ratchet disc is provided with a mounting plate, and two limiting plates are symmetrically and spaced apart on the inner side of the mounting plate. A hydraulic cylinder fixing component is detachably fixed between the two limiting plates and the mounting plate, and the two are fixed by a fixing post passing through the hydraulic cylinder tube fixing component and the end of the first hydraulic cylinder.

[0008] To improve the stability of fixing the end of the first hydraulic cylinder, two sets of hydraulic cylinder fixing components are provided, and they are symmetrically arranged with respect to the horizontal center line of the mounting plate.

[0009] The specific design of the cylinder fixing component is as follows: the cylinder fixing component includes a base plate that can be inserted between the limiting plate and the mounting plate, and a fixing plate perpendicular to it is installed on the inner side of the base plate. The fixing plate has a through hole for the fixing column to pass through.

[0010] To improve the support strength of the fixing plate, triangular ribs are connected between the two sides of the fixing plate and the bottom plate.

[0011] To facilitate the adjustment of the distance between the two sets of hydraulic cylinder fixing parts, and to ensure that the two are symmetrical with respect to the horizontal center line of the mounting plate, and to facilitate the observation and adjustment of the distance, a measuring ruler is vertically embedded in the middle of the mounting plate.

[0012] The installation method of the limiting plate and the mounting plate is as follows: a connecting plate is provided between the limiting plate and the mounting plate, and the width of the connecting plate is smaller than the width of the limiting plate. The two are aligned on the side away from the center of the mounting plate.

[0013] To facilitate the fixing and disassembly of engineering cylinders of different specifications and with different end designs, the mounting plate is integrally formed with positioning plates on both sides. Positioning pins for positioning grooves for circumferential arrangement at the end of the second cylinder are installed on both positioning plates.

[0014] In order to accommodate the fixing of various sizes of engineering cylinders, the length of the positioning column is 3-5 times the maximum length of the distance between the limiting plate and the mounting plate.

[0015] To facilitate the disassembly of the second cylinder end support and ensure that it remains parallel to the mounting plate during disassembly, thus preventing misalignment caused by loosening of the second cylinder end threads, multiple sets of support springs are provided on both positioning plates. Each support spring contains a sliding rod, with a support plate installed at one end and the other end passing through the positioning plate and slidingly positioned.

[0016] The specific design of the support springs is that each of the positioning plates is provided with two sets of support springs, which are located outside the positioning post and are arranged symmetrically in the vertical direction relative to the positioning post.

[0017] The beneficial effects of this utility model are as follows: This utility model is an engineering hydraulic cylinder disassembly and assembly device. Through the combination structure of the mounting plate, the limiting plate and the detachable hydraulic cylinder fixing component on the inner side of the ratchet device, it can be adapted to engineering hydraulic cylinders with annular ear plates at both ends. By using the through hole of the fixing post through the hydraulic cylinder fixing component and the ear plate at the end of the hydraulic cylinder, the ear plate structure can be stably clamped, which breaks through the limitation that the traditional wrench-type fixing device cannot be adapted to the ear plate structure. Meanwhile, to address the obstruction issue at the extended end of the lifting cylinder, two sets of symmetrically arranged cylinder fixing components create a clearance space, preventing interference with the extended end and ensuring the reliability of the end fixing. Secondly, the ratchet device is driven to rotate by symmetrical telescopic cylinders at both ends. Compared to traditional single-power-source drives, this can balance the output torque and prevent uneven force on the cylinder end, which could lead to swaying or slippage. The intermediate fixing component and the tail fixing component work together to form a three-point positioning structure. Combined with the stability advantage of the horizontal fixing device in the prior patent, this further prevents axial movement of the cylinder during rotation and disassembly, reducing the risk of parts falling. The rigid connection between the fixing column and the cylinder ear plate transmits torque, avoiding surface scratches or thread damage that may occur when using a traditional wrench to clamp the outer diameter of the cylinder. The elastic support structure of the support spring and slide rod can buffer vibration and impact during disassembly and disassembly, protecting precision components such as the cylinder guide sleeve and piston rod from hard impacts. It can also support the cylinder end during disassembly, effectively reducing the offset that occurs after the end threads loosen, and improving the stability of end disassembly. Attached Figure Description

[0018] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the overall structure of this solution (without the hydraulic cylinder fixing components installed);

[0021] Figure 2 This is a left view of part of the structure of this scheme;

[0022] Figure 3 for Figure 2 Partial structural view;

[0023] Figure 4 This is a partial main view of the structure of this solution (without the hydraulic cylinder mounting hardware installed);

[0024] Figure 5 A schematic diagram showing the fixing of the end of the first hydraulic cylinder;

[0025] Figure 6 A schematic diagram showing the fixing of the end of the second hydraulic cylinder;

[0026] Figure 7 The right view is fixed at the end of the second hydraulic cylinder;

[0027] The components represented by the various reference numerals in the diagram are:

[0028] 1. Base; 2. Ratchet mechanism; 21. Ratchet disc; 22. Telescopic cylinder; 3. Tail end fixing component; 4. Intermediate fixing component; 5. Mounting plate; 6. Limiting plate; 7. Hydraulic cylinder fixing component; 71. Base plate; 72. Fixing plate; 73. Through hole; 74. Rib plate; 8. Fixing post; 9. First hydraulic cylinder end; 10. Measuring ruler; 11. Connecting plate; 12. Positioning plate; 13. Second hydraulic cylinder end; 14. Positioning groove; 15. Positioning post; 16. Support spring; 17. Slide rod; 18. Support plate. Detailed Implementation

[0029] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0030] Example

[0031] As mentioned in the background section, the applicant is dedicated to the research and development of disassembly and assembly equipment for engineering hydraulic cylinders. They have designed numerous horizontal and vertical disassembly and assembly machines. However, the inventor discovered several defects in the existing horizontal disassembly and assembly machines during actual use. For example, for some locking cylinders in engineering machinery, both ends are equipped with annular lugs for fixing to other components, making it impossible for the disassembly and assembly ends of the disassembly and assembly machine to form a good fixation with the annular lugs, thus affecting the disassembly effect. Therefore, the inventor combined the original disassembly and assembly machine design with improvements, and designed a new type of disassembly and assembly equipment suitable for various models of engineering hydraulic cylinders. The following detailed explanation is based on the accompanying illustrations.

[0032] This embodiment provides an engineering hydraulic cylinder disassembly and assembly device. Its overall structure is based on a base 1, and through modular design, it achieves stable disassembly and assembly of different types of engineering hydraulic cylinders. The specific structure is as follows (see details). Figures 1-4The base 1 is made of high-strength cast iron and has a rectangular structure. Its length is designed according to the stroke of common engineering cylinders to ensure compatibility with most small and medium-sized lifting cylinders and engineering cylinders with lugs at both ends. A ratchet device 2 is fixedly installed at one end of the base 1. The ratchet mechanism is a common drive mechanism in the field of disassembly and assembly machines. The core of this device is the ratchet disc 21. To ensure the balance of driving force, the ratchet disc 21 is provided with two pieces, which are spaced apart. A set of telescopic cylinders 22 are symmetrically installed at the top and bottom of the two ratchet discs 21. The telescopic end of the telescopic cylinder 22 is located in the middle of the two ratchet discs 21, and the output ends of the two are set in opposite directions. The cylinder body of each set of telescopic cylinders 22 is connected to the base 1 through a bracket, and the piston rod end is hinged to the lug on the edge of the ratchet disc 21 through a pin. Through the alternating extension and retraction of the two sets of telescopic cylinders 22, the ratchet disc 21 can be driven to achieve stable clockwise or counterclockwise rotation, avoiding the torque fluctuation caused by traditional single-cylinder drive.

[0033] In this embodiment, combined with Figure 2 An mounting plate 5 is provided on the inner side of the ratchet disc 21 (i.e., the side facing the middle of the base 1). The size of the mounting plate 5 is smaller than that of the ratchet disc 21, and its central axis coincides with that of the ratchet disc 21. On the inner side of the mounting plate 5, there are two elongated limiting plates 6 symmetrically arranged in the horizontal direction. The two limiting plates 6 are parallel to each other and are consistent with the radial direction of the mounting plate 5. They are spaced apart from the mounting plate 5. Specifically, a connecting plate 11 is provided between the limiting plate 6 and the mounting plate 5. The width of the connecting plate 11 is smaller than that of the limiting plate 6. The sides of the two plates away from the center of the mounting plate 5 are aligned. That is, the side of the limiting plate 6 closer to the center of the mounting plate 5 extends beyond the connecting plate 11, so that a receiving groove is formed between the limiting plate 6 and the mounting plate 5. The distance between the two plates is designed according to the width of the common hydraulic cylinder end ear plate.

[0034] Based on the above structure, combined with Figures 3-5Between the two limiting plates 6 and the mounting plate 5, two sets of cylinder fixing parts 7 are detachably installed. The two sets of fixing parts are symmetrically distributed about the horizontal center line of the mounting plate 5, forming a symmetrical clamping structure. Each set of cylinder fixing parts 7 includes a rectangular base plate 71. The width of the base plate 71 is adapted to the distance between the two limiting plates 6, and can be inserted into the gap between the limiting plates 6 and the mounting plate 5. Fixing holes are opened at both ends of the base plate 71 and the end face of the limiting plates 6. The base plate 71 is fixed to the limiting plates 6 by bolts passing through the fixing holes. A rectangular fixing plate 72 is vertically welded to the inner side of the base plate 71 (i.e., the side facing the middle of the base 1). A through hole 73 is vertically opened at the center of the plate 72 for the fixing column 8 to pass through to connect to the end 9 of the first cylinder. The cylinder referred to as the end 9 of the first cylinder is a cylinder with annular lugs at both ends. To enhance the connection strength between the fixing plate 72 and the base plate 71, triangular ribs 74 are welded between both sides of the fixing plate 72 and the base plate 71. The thickness of the ribs 74 is the same as that of the fixing plate 72, which can effectively disperse the stress of the fixing plate 72 when it is subjected to torque and prevent it from bending and deforming.

[0035] In addition, a measuring ruler 10 is embedded vertically in the middle of the mounting plate 5. The zero mark of the measuring ruler 10 is aligned with the center of the mounting plate 5, which can quickly measure the distance between the cylinder fixing part 7 and the center of the mounting plate 5, and facilitate the adjustment of the installation position of the cylinder fixing part 7 to ensure alignment.

[0036] As another embodiment of this application, combined with Figure 6 and Figure 7 This is for fixing and disassembling the ends of other types of hydraulic cylinders, such as the jacks of the vertical columns of fully mechanized mining supports. The characteristic of this type of hydraulic cylinder is that it has an end cap at the end, and the outer edge of the end cap has a groove circumferentially opened. Traditionally, the end cap is disassembled by using a wrench to engage with the groove. However, the disassembly and assembly equipment in this solution can also be applied to the disassembly of this type of hydraulic cylinder. Specifically, two symmetrical positioning plates 12 are integrally formed on both sides of the mounting plate 5. Each positioning plate 12 is provided with a cylindrical positioning post 15. The axis of the positioning post 15 is consistent with the axis of the mounting plate 5. Its length is 3-5 times the maximum length of the limiting plate 6 from the mounting plate 5. This can avoid the limitation of the cylinder end by the protruding limiting plate 6. It can be inserted into any two positioning grooves 14 circumferentially on the end 13 of the second hydraulic cylinder to achieve circumferential limitation of the hydraulic cylinder and prevent relative rotation between the hydraulic cylinder and the mounting plate 5 during disassembly and assembly.

[0037] In addition, two sets of support springs 16 are installed on each positioning plate 12. The two sets of support springs 16 are located on the upper and lower sides of the positioning post 15, respectively, and are arranged symmetrically in the vertical direction about the positioning post 15. One end of the support spring 16 is fixed to the positioning plate 12, and the other end is connected to the support plate 18. The inner side of the support plate 18 is covered with a rubber anti-slip pad. A sliding rod 17 is also installed inside the support spring 16. One end of the sliding rod 17 is connected to the support plate 18, and the other end passes through the guide hole on the positioning plate 12 and can slide along the hole. Through the elastic deformation of the support spring 16, the support plate 18 supports the end 13 of the second oil cylinder, further enhancing the support stability of the oil cylinder.

[0038] On the base 1, between the ratchet device 2 and the other end fixing member 3, an intermediate fixing member 4 is installed. In this solution, the intermediate fixing member 4 and the end fixing member 3 can adopt the same solution as the support member and clamping mechanism in the applicant's earlier patent application with patent number CN221716731U. Of course, the following solution can also be adopted without restriction: the intermediate fixing member 4 is provided in two sets. One set is a V-shaped bracket that can slide along the length direction of the base 1. The top of the bracket is equipped with a clamping block with adjustable height, which is fixed in position by bolts. The other set is an intermediate clamping member that drives the clamping block to move through two sets of hydraulic cylinders. The end fixing member 3 can also be a tail clamping member that controls the movement of the clamping block through two sets of hydraulic cylinders. The intermediate fixing member 4 and the end fixing member 3 form a multi-point support structure to stably support the hydraulic cylinder to be disassembled in a horizontal or inclined state, and avoid the axial movement of the hydraulic cylinder during disassembly and assembly.

Claims

1. An engineering hydraulic cylinder disassembly and assembly device, comprising a base (1), wherein a ratchet device (2) is provided at one end of the base (1), a tail end fixing member (3) is provided at the other end, and an intermediate fixing member (4) is provided on the base (1) between the two, characterized in that, The ratchet device (2) includes a ratchet disc (21), and telescopic cylinders (22) for driving the ratchet disc (21) to rotate are respectively installed at both ends of the ratchet disc (21). The inner side of the ratchet disc (21) is provided with a mounting disc (5), and two limiting plates (6) are symmetrically spaced on the inner side of the mounting disc (5). A hydraulic cylinder fixing component (7) is detachably fixed between the two limiting plates (6) and the mounting disc (5), and the two are fixed by a fixing post (8) passing through the hydraulic cylinder tube fixing component and the end of the first hydraulic cylinder (9).

2. The engineering cylinder disassembly and assembly equipment according to claim 1, characterized in that, The cylinder fixing component (7) is provided in two sets and is symmetrically arranged relative to the horizontal center line of the mounting plate (5).

3. The engineering cylinder disassembly and assembly equipment according to claim 2, characterized in that, The cylinder fixing component (7) includes a base plate (71) that can be inserted between the limiting plate (6) and the mounting plate (5), and a fixing plate (72) perpendicular to it is installed on the inner side of the base plate (71). The fixing plate (72) has a through hole (73) for the fixing column (8) to pass through.

4. The engineering cylinder disassembly and assembly equipment according to claim 3, characterized in that, The fixing plate (72) is connected to the base plate (71) by triangular ribs (74) on both sides.

5. The engineering cylinder disassembly and assembly equipment according to claim 2, characterized in that, A measuring ruler (10) is vertically embedded in the middle of the mounting plate (5).

6. The engineering cylinder disassembly and assembly equipment according to claim 1, characterized in that, A connecting plate (11) is provided between the limiting plate (6) and the mounting plate (5), and the width of the connecting plate (11) is smaller than the width of the limiting plate (6), and the two are aligned on the side away from the center of the mounting plate (5).

7. The engineering cylinder disassembly and assembly equipment according to claim 1, characterized in that, The mounting plate (5) has a positioning plate (12) integrally formed on both sides. The two positioning plates (12) are each equipped with a positioning post (15) for the positioning groove (14) arranged circumferentially at the end (13) of the second oil cylinder.

8. The engineering cylinder disassembly and assembly equipment according to claim 7, characterized in that, The length of the positioning post (15) is 3-5 times the maximum distance between the limiting plate (6) and the mounting plate (5).

9. The engineering cylinder disassembly and assembly equipment according to claim 7, characterized in that, Multiple sets of support springs (16) are provided on both of the positioning plates (12), and a slide rod (17) is installed inside the support spring (16). One end of the slide rod (17) is equipped with a support plate (18), and the other end passes through the positioning plate (12) and is slidably arranged.

10. The engineering cylinder disassembly and assembly equipment according to claim 9, characterized in that, Each of the positioning plates (12) is provided with two sets of support springs (16), which are located outside the positioning post (15) and are arranged symmetrically in the vertical direction relative to the positioning post (15).

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