A filter element dismounting tool suitable for a mine truck

Abstract

The utility model belongs to the technical field of maintenance of mining equipment, especially a filter element dismounting tool suitable for mining truck, including U block and closed chain, the one end of U block is equipped with the limiting rod, the closed chain is equipped below the limiting rod on U block, the bottom end of telescopic vertical rod is installed support vertical rod, the connecting place of telescopic vertical rod and support vertical rod is sleeved with the positioning sleeve, the both ends of support cross bar are telescopically sleeved telescopic cross bar, through telescopic vertical rod and cross bar design, the length and force arm of tool can be flexibly adjusted, can perfectly adapt to the complex space constraint under different mine car chassis, realizes in the narrow space, flexible closed chain can self -adaptation and wrap up the filter element of different diameter, in combination telescopic rod body, one tool can cover extensive filter element specification, reduces the number of required tool of repair workshop.

Description

Technical Field

[0001] This utility model belongs to the field of mining equipment maintenance technology, specifically relating to a filter element removal and installation tool suitable for mining trucks. Background Technology

[0002] The hydraulic and lubrication systems of heavy equipment such as mining trucks require regular filter replacement to ensure normal operation. These filters are usually installed in space-constrained locations such as the vehicle chassis, and are installed very securely due to long-term exposure to high pressure and vibration. Their removal and installation is an extremely difficult and time-consuming maintenance operation.

[0003] Existing technologies typically employ belt-type or chain-type filter wrenches for filter element installation and removal. These tools utilize a belt or chain wrapped around the filter element, which is then tightened and rotated via a metal lever. However, in confined spaces, winding the belt or chain is extremely inconvenient, and the tool lacks effective axial positioning, making it prone to slipping off the filter element when rotational torque is applied. This not only results in low efficiency but also poses safety hazards. This is particularly true for mine car filters installed in deep locations with complex surrounding pipelines, where slippage can easily lead to component damage.

[0004] Alternatively, a dedicated three-jaw wrench can be used. However, these wrenches require a specific lug or groove design on the filter element housing. However, different brands and models of filter elements have inconsistent interface sizes, requiring repair shops to stock multiple wrenches, leading to high costs and management difficulties. More importantly, many filter element housings lack this dedicated design, rendering three-jaw wrenches unusable. Therefore, we propose a filter element removal and installation tool suitable for mining trucks. Utility Model Content

[0005] To address the aforementioned issues, existing technologies typically employ belt-type or chain-type filter element wrenches for filter element installation and removal. These tools utilize a belt or chain wrapped around the filter element, which is then tightened and rotated via a metal lever. However, in confined spaces, winding the belt or chain is extremely inconvenient, and the tool lacks effective axial positioning, making it prone to slipping off the filter element when rotational torque is applied. This not only results in low efficiency but also poses safety hazards. Particularly concerning are filter elements installed deep within mine cars with complex surrounding pipelines, slippage can easily lead to component damage.

[0006] Alternatively, a dedicated three-jaw wrench can be used. This type of wrench requires a specially designed lug or groove on the filter cartridge housing. However, different brands and models of filter cartridges have inconsistent interface sizes, requiring repair shops to have multiple wrenches of various sizes, leading to high costs and management difficulties. More importantly, many filter cartridge housings lack this dedicated design, rendering the three-jaw wrench unusable.

[0007] This utility model provides a filter element removal and installation tool suitable for mining trucks.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a filter element removal and installation tool suitable for mining trucks, comprising a U-shaped block and a closed chain, wherein a limiting rod is inserted through one end of the U-shaped block, and a closed chain is inserted through the U-shaped block below the limiting rod;

[0009] The bottom of the U-shaped block is fixedly connected to a telescopic vertical rod, and a supporting vertical rod is installed at the bottom end of the telescopic vertical rod. A positioning sleeve is sleeved at the connection between the telescopic vertical rod and the supporting vertical rod. A first positioning pin is inserted through one end of the positioning sleeve. A supporting horizontal rod is fixedly connected to the bottom end of the supporting vertical rod. Telescopic horizontal rods are telescopically sleeved at both ends of the supporting horizontal rod. A second positioning pin is inserted through one end of the telescopic horizontal rod.

[0010] As a preferred embodiment of the filter element removal and installation tool for mining trucks according to this utility model, the U-shaped block has a positioning groove on its inner side and a through hole on its top. One end of the limiting rod is movably connected to the U-shaped block, and its movable end can extend into the positioning groove. The limiting rod has a through hole.

[0011] As a preferred embodiment of the filter element removal and installation tool for mining trucks according to this utility model, a positioning pin is inserted through the top of the U-shaped block, and the positioning pin is insertably inserted into the through hole of the limiting rod.

[0012] As a preferred embodiment of the filter element removal and installation tool for mining trucks according to this utility model, the outer wall of the positioning pin is fitted with an elastic rubber ring.

[0013] As a preferred embodiment of the filter element removal and installation tool for mining trucks according to this utility model, the closed chain is a ring chain with its ends connected.

[0014] As a preferred embodiment of the filter element removal and installation tool for mining trucks according to this utility model, the supporting crossbar and the supporting vertical bar are perpendicular to each other.

[0015] As a preferred embodiment of the filter element removal and installation tool for mining trucks according to this utility model, multiple equidistant positioning holes are provided on both the telescopic vertical rod and the telescopic horizontal rod, and an elastic through hole is provided on each of the supporting vertical rod and the supporting horizontal rod at the position corresponding to the positioning holes.

[0016] As a preferred embodiment of the filter element removal and installation tool for mining trucks according to this utility model, the free end of the telescopic crossbar is fitted with an anti-slip sleeve.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the design of the telescopic vertical and horizontal bars, the length and lever arm of the tool can be flexibly adjusted, perfectly adapting to the complex spatial constraints under different mine car chassis. This achieves a wide range of operation in narrow spaces. The axial positioning mechanism, composed of a U-shaped block, a limiting rod, and a positioning pin, can firmly lock the tool to the end of the filter element like an anchor, fundamentally preventing the risk of axial dislodgement when applying huge torque. This greatly improves the safety and reliability of the operation. The flexible closed chain can adaptively wrap filter elements of different diameters. Combined with the telescopic rod, one tool can cover a wide range of filter element specifications, reducing the number of tools required in the maintenance workshop, lowering costs and management difficulty. This prevents the problems of existing tools being extremely inconvenient to operate in narrow spaces, lacking effective axial positioning functions, easily slipping during operation, posing safety risks, and having poor versatility, unable to adapt to various filter element specifications. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the U-shaped block of this utility model.

[0022] In the diagram: 1. U-shaped block; 2. Limiting rod; 3. Enclosed chain; 4. Telescopic vertical rod; 5. Supporting vertical rod; 6. Positioning sleeve; 7. First positioning pin; 8. Supporting horizontal rod; 9. Telescopic horizontal rod; 10. Second positioning pin; 11. Positioning hole; 12. Anti-slip sleeve; 13. Positioning groove; 14. Positioning pin; 15. Elastic rubber ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] like Figures 1-3 As shown;

[0026] A filter element removal and installation tool suitable for mining trucks includes a U-shaped block 1 and a closed chain 3. A limiting rod 2 is inserted through one end of the U-shaped block 1, and the closed chain 3 is inserted through the U-shaped block 1 below the limiting rod 2. A telescopic vertical rod 4 is fixedly connected to the bottom of the U-shaped block 1, and a supporting vertical rod 5 is installed at the bottom end of the telescopic vertical rod 4. A positioning sleeve 6 is sleeved at the connection between the telescopic vertical rod 4 and the supporting vertical rod 5. A first positioning pin 7 is inserted through one end of the positioning sleeve 6. A supporting horizontal rod 8 is fixedly connected to the bottom end of the supporting vertical rod 5. Telescopic horizontal rods 9 are telescopically sleeved at both ends of the supporting horizontal rod 8, and a second positioning pin 10 is inserted through one end of the telescopic horizontal rod 9.

[0027] In this implementation plan: Through the design of telescopic vertical and horizontal bars, the length and lever arm of the tool can be flexibly adjusted, perfectly adapting to the complex spatial constraints under different mine car chassis, achieving a wide range of operation in narrow spaces. The axial positioning mechanism, composed of U-shaped block 1, limit rod 2, and positioning pin 14, can firmly lock the tool to the end of the filter element like an anchor, fundamentally preventing the risk of the tool jumping off axially when a huge torque is applied, greatly improving the safety and reliability of the operation. The flexible closed chain 3 can adaptively wrap filter elements of different diameters. Combined with the telescopic rod, one tool can cover a wide range of filter element specifications, reducing the number of tools required in the maintenance workshop, reducing costs and management difficulty.

[0028] In an optional embodiment, a positioning groove 13 is provided on the inner side of the U-shaped block 1, and a through hole is provided on its top. One end of the limiting rod 2 is movably connected to the U-shaped block 1, and its movable end can extend into the positioning groove 13. A through hole is provided on the limiting rod 2.

[0029] In this embodiment, the positioning groove 13 provides a clear movement path and a final locking position for the movable end of the limiting rod 2. This ensures that the limiting rod 2 can be quickly and accurately guided to the optimal working position and reliably contact the end of the filter element or adjacent components. When the end of the limiting rod 2 is placed in the positioning groove 13, the mating relationship formed by the two can effectively resist the lateral force generated when the tool rotates circumferentially, preventing the limiting rod 2 from shaking or shifting.

[0030] In an optional embodiment, a positioning pin 14 passes through the top of the U-shaped block 1, and the positioning pin 14 is insertably inserted into the through hole of the limiting rod 2.

[0031] In this implementation scheme: by inserting the positioning pin 14, the already adjusted limit rod 2 can be rigidly connected to the U-shaped block 1, thereby achieving rapid locking of the limit rod 2.

[0032] In an optional embodiment, the outer wall of the positioning pin 14 is fitted with an elastic rubber ring 15.

[0033] In this implementation scheme: the elastic rubber ring 15 increases the friction between the positioning pin 14 and the through hole of the U-shaped block 1, generating a certain damping effect, which can effectively prevent the positioning pin 14 from loosening on its own under equipment vibration or accidental contact, further enhancing the reliability of locking.

[0034] In an optional embodiment, the closed chain 3 is a loop chain with its ends connected.

[0035] In this implementation scheme: the annular closed chain 3 does not require any additional connection steps, and the operator can directly put it on the filter element. As a whole, the closed chain 3 has higher structural strength and better durability, avoiding tool failure due to damage to the connecting parts.

[0036] In an optional embodiment, the support crossbar 8 and the support vertical bar 5 are perpendicular to each other.

[0037] In this implementation scheme: the vertical design ensures that the force applied to both ends of the support crossbar 8 can be effectively and losslessly transmitted to the support vertical bar 5 and converted into pure torque, thus maximizing the lever force transmission efficiency.

[0038] In an optional embodiment, multiple equidistant positioning holes 11 are provided on both the telescopic vertical rod 4 and the telescopic horizontal rod 9, and an elastic through hole is provided on the supporting vertical rod 5 and the supporting horizontal rod 8 at the position corresponding to the positioning holes 11.

[0039] In this implementation scheme: Through multiple equidistantly distributed positioning holes 11, the operator can precisely adjust the height and lever arm length of the tool according to the site space and the position of the filter element to achieve the best working posture. The elastic through hole on the support rod and the positioning hole 11 on the telescopic rod cooperate with the positioning pin to form a reliable interference fit or elastic locking mechanism.

[0040] In an optional embodiment, the free end of the telescopic crossbar 9 is fitted with an anti-slip sleeve 12.

[0041] In this implementation plan: In the oily environment of mine car maintenance, the anti-slip sleeve 12 greatly increases the friction between the hand and the tool, effectively preventing slippage and avoiding personal injury or equipment damage that may be caused by the tool slipping out of the hand. The anti-slip sleeve 12 is usually made of flexible materials such as rubber, which can reduce the pressure on the palm during long-term and vigorous operation and reduce the operator's labor fatigue.

[0042] Working principle:

[0043] The operator inserts the opening of the U-shaped block 1 into the outer shell of the filter element from top to bottom or from the side, and pushes the limiting rod 2 by hand so that its end is embedded in the gap between the filter element shell and the adjacent parts, or close to the end face of the filter element. Then, the positioning pin 14 is inserted into the through hole above the U-shaped block 1 so that it passes through the corresponding hole at the end of the limiting rod 2. The elastic rubber ring 15 on the outer wall of the positioning pin 14 provides frictional resistance to prevent it from accidentally falling off during vibration. The limiting rod 2 and the U-shaped block 1 together form a stable claw, which initially positions and limits the filter element from the axial and radial directions, effectively preventing the entire tool from axially slipping off during rotation.

[0044] The operator first adjusts the overall dimensions of the tool according to the working space under the mine car chassis and the installation position of the filter element. Holding the telescopic vertical rod 4 and the supporting vertical rod 5, the operator slides them relative to each other to change the overall height of the tool. When the appropriate positioning holes 11 are aligned, the first positioning pin 7 is inserted for fixation. The operator then holds the two telescopic horizontal rods 9 and pulls them out or pushes them in from the supporting horizontal rod 8 to adjust the total length of the horizontal rods and change the torque. After adjustment, the second positioning pin 10 is inserted for fixation, allowing the tool to flexibly adapt to narrow or open spaces under different types of mine car chassis. By lengthening the lever arm, greater torque can be obtained, achieving labor-saving operation.

[0045] The closed chain 3 is wrapped around the other side of the filter element, tightly encasing its outer circumference. Due to the chain's flexibility, it can adapt to filter elements of different diameters. The operator holds the anti-slip sleeves 12 at the ends of the two telescopic crossbars 9 with both hands. The anti-slip sleeves 12 increase friction, ensuring a stable grip even in oily environments. During disassembly, the operator simultaneously and evenly applies force to the two crossbars in the direction the filter element is loosened. According to the lever principle, the force applied to the ends of the crossbars will generate a huge torque at the top of the vertical bar, i.e., the contact point between the chain and the filter element. During the manipulation, the force is transmitted to the U-shaped block 1 through the supporting vertical bar 5 and the telescopic vertical bar 4. The U-shaped block 1 drives the closed chain 3 to tighten further, generating a strong self-tightening wrapping force that firmly holds the filter element shell, thereby effectively transmitting the torque to the filter element and loosening it.

[0046] After the operation is completed, reverse the lever to loosen the chain, first pull out the positioning pin 14, and then retract the limit rod 2. Then the U-shaped block 1 and the closed chain 3 can be removed from the filter element, which also makes it easier to replace the closed chain 3.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A filter element removal and installation tool suitable for mining trucks, comprising a U-shaped block (1) and a closed chain (3), characterized in that: A limiting rod (2) is inserted through one end of the U-shaped block (1), and a closed chain (3) is inserted through the U-shaped block (1) below the limiting rod (2); The bottom of the U-shaped block (1) is fixedly connected to a telescopic vertical rod (4), and a support vertical rod (5) is installed at the bottom end of the telescopic vertical rod (4). A positioning sleeve (6) is sleeved at the connection between the telescopic vertical rod (4) and the support vertical rod (5). A first positioning pin (7) is inserted through one end of the positioning sleeve (6). A support horizontal rod (8) is fixedly connected to the bottom end of the support vertical rod (5). Telescopic horizontal rods (9) are telescopically sleeved at both ends of the support horizontal rod (8). A second positioning pin (10) is inserted through one end of the telescopic horizontal rod (9).

2. The filter element removal and installation tool for mining trucks according to claim 1, characterized in that: The U-shaped block (1) has a positioning groove (13) on its inner side and a through hole on its top. One end of the limiting rod (2) is movably connected to the U-shaped block (1), and its movable end can extend into the positioning groove (13). The limiting rod (2) has a through hole.

3. The filter element removal and installation tool for mining trucks according to claim 1, characterized in that: The top of the U-shaped block (1) is fitted with a positioning pin (14), which can be inserted into the through hole of the limiting rod (2).

4. The filter element removal and installation tool for mining trucks according to claim 3, characterized in that: The outer wall of the positioning pin (14) is fitted with an elastic rubber ring (15).

5. The filter element removal and installation tool for mining trucks according to claim 1, characterized in that: The closed chain (3) is a ring chain with its ends connected.

6. The filter element removal and installation tool for mining trucks according to claim 1, characterized in that: The supporting horizontal bar (8) is perpendicular to the supporting vertical bar (5).

7. The filter element removal and installation tool for mining trucks according to claim 1, characterized in that: Multiple equidistant positioning holes (11) are provided on both the telescopic vertical rod (4) and the telescopic horizontal rod (9), and an elastic through hole is provided on the supporting vertical rod (5) and the supporting horizontal rod (8) at the position corresponding to the positioning hole (11).

8. The filter element removal and installation tool for mining trucks according to claim 1, characterized in that: The free end of the telescopic crossbar (9) is fitted with an anti-slip sleeve (12).

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