Split type detachable oil cylinder

Abstract

The split type detachable oil cylinder comprises a shell, an end cover, a piston and an oil way, the shell is communicated with the oil way, the oil way drives the piston to slide relative to the shell, a packaging part is arranged on the side, away from the end cover, of the shell, the packaging part comprises packaging blocks, a movable plate, a primary fastener and a secondary fastener, and the packaging blocks, the movable plate, the primary fastener and the secondary fastener are symmetrically arranged. The sealing blocks are in butt joint to seal the shell, the movable plate is clamped between the sealing blocks and the end of the shell, the primary fastening piece is matched between the two sealing blocks, the secondary fastening piece is matched with the two sealing blocks, and the secondary fastening piece is connected with the two sealing blocks and pushes the two sealing blocks to be tightly pressed towards the shell at the same time. Only two-time splitting is needed in the whole maintenance process, the original structure of the oil cylinder is not damaged, maintenance is convenient and fast, the recovery degree is high, and the normal use performance of the oil cylinder is not affected after the oil cylinder is recovered after maintenance is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, and particularly relates to a split-type detachable oil cylinder. Background Art

[0002] An oil cylinder, namely a hydraulic cylinder, is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion or swinging motion.

[0003] The basic components of an oil cylinder include a cylinder body, a piston and an oil circuit. The oil circuit controls the introduction or export of hydraulic oil into or out of the cylinder body. The hydraulic oil pushes the piston to slide relative to the cylinder body. The conventional cylinder body of an oil cylinder is usually of an integral design (the end of the cylinder body is welded to the cylinder barrel as a whole). With such a design, the oil cylinder can only be disassembled at the position where the piston penetrates the cylinder body.

[0004] However, under actual working conditions, when performing fault repair on the oil cylinder, disassembling the oil cylinder only from one side of the piston is incomplete. When a fault occurs on the oil cylinder and is covered on the other side of the piston, only forced cutting and breaking can be carried out on the fault position. After the repair and adjustment, welding and reconnecting are carried out. Not only is the operation cumbersome, but the restored oil cylinder structure is also difficult to reach the original level in terms of sealing performance, reducing the service life of the oil cylinder. Content of the Utility Model

[0005] In order to overcome the above technical problems, the purpose of the utility model is to provide a split-type detachable oil cylinder, which solves the incomplete disassembly method of the oil cylinder under actual repair working conditions and can cope with the repair working conditions where faults occur in different parts.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A split-type detachable oil cylinder includes a housing, an end cover, a piston and an oil circuit. The housing is connected to the oil circuit, and the oil circuit drives the piston to slide relative to the housing. A packaging part is arranged on the side of the housing away from the end cover. The packaging part includes symmetrically arranged packaging blocks, a movable plate, a primary fastener and a secondary fastener. After the packaging blocks are butted, they form a seal for the housing. The movable plate is clamped between the packaging blocks and the end of the housing. The primary fastener is fitted between the two packaging blocks, and the secondary fastener cooperates with the two packaging blocks. The secondary fastener connects the two packaging blocks and simultaneously pushes the two packaging blocks to tightly press against the housing.

[0008] As a further scheme of the utility model: The primary fastener includes a connecting rod and a connecting sleeve. The connecting rod is threadedly connected to the connecting sleeve. One packaging block is in extrusion contact with the outer convex surface of the end of the connecting rod, and the other packaging block is in extrusion contact with the connecting sleeve.

[0009] As a further solution of the utility model: The secondary fastener includes a shaft rod, a transfer sleeve, a male locking member and a female locking member. The shaft rod is inserted between the two encapsulation blocks. The transfer sleeve is slidably sleeved on the end of the shaft rod. The male locking member is arranged on the transfer sleeve, and the female locking member is arranged on the encapsulation block. The male locking member and the female locking member are detachably locked and matched.

[0010] As a further solution of the utility model: The transfer sleeve includes an inner ring and an outer ring, and the inner ring and the outer ring rotate relative to each other.

[0011] As a further solution of the utility model: Convex teeth are fixed at the end of the shaft rod, and grooves matching with the convex teeth are formed on the inner ring.

[0012] As a further solution of the utility model: The outer ring is fixedly connected with the male locking member.

[0013] As a further solution of the utility model: A coil spring is arranged between the outer ring and the inner ring, and rotational potential energy is accumulated during the deformation when the outer ring rotates relative to the inner ring.

[0014] As a further solution of the utility model: A cover plate for encapsulating the coil spring is fixed on one side of the outer ring.

[0015] As a further solution of the utility model: The male locking member is in the shape of a U-shaped rod, and a circular tubular notch matching with the male locking member is arranged on the female locking member. When the male locking member and the female locking member are in the locked state, the deflection angle of the male locking member relative to the shaft rod is 30 degrees.

[0016] As a further solution of the utility model: The oil circuit includes a first oil passage pipe and a second oil passage pipe. The connection part of the first oil passage pipe and the housing is arranged between the maximum limit of the piston stroke and the end cover, and the second oil passage pipe penetrates through the encapsulation part and then communicates with the housing.

[0017] The beneficial effects of the utility model:

[0018] When the fault of the oil cylinder occurs on the side where the piston deviates from the end cover, the whole maintenance process only needs to be disassembled twice without damaging the original structure of the oil cylinder. It not only achieves convenient and fast maintenance, but also has a high restoration degree. After the restoration after maintenance, it has no adverse impact on the normal use performance of the oil cylinder, significantly highlighting the advantages of the split design of the oil cylinder;

[0019] The primary fastener and the secondary fastener form a segmented process for the fastening effect, improving the split design of the whole oil cylinder. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall combined structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall disassembled structure of the utility model;

[0022] Figure 3 is Figure 2 The enlarged structural schematic diagram at position A in

[0023] Figure 4 is the specific structural schematic diagram of the primary fastener and the secondary fastener of the present utility model;

[0024] Figure 5 is the specific structural schematic diagram of the connecting sleeve of the present utility model;

[0025] Figure 6 is the schematic diagram of the analysis of the pressure acting on the encapsulation part in the locked state of the secondary fastener.

[0026] In the figure: 1, housing; 2, end cap; 3, encapsulation part; 301, encapsulation block; 302, movable plate; 303, primary fastener; 3031, connecting rod; 3032, connecting sleeve; 304, secondary fastener; 3041, shaft rod; 3042, adapter sleeve; 3043, male locking part; 3044, female locking part; 4, piston; 501, first oil pipeline; 502, second oil pipeline. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0028] Before specifically elaborating on the technical solutions of the present utility model, some explanations on the necessity of implementing the present utility model are given here. The specific explanations for the split design of the oil cylinder for disassembly, installation, and maintenance are as follows:

[0029] Firstly, considering not to damage the sealing performance of the existing setting: A sealing area must be set at the connection part between the end cap 2 and the piston 4 to ensure that the piston 4 can slide relative to the housing 1 smoothly while preventing hydraulic oil from overflowing from the oil cylinder. Under normal circumstances, disassembling and assembling at this part will easily cause loss of the sealing performance of the sealing area;

[0030] Secondly, the location of the fault is not constant: When a fault occurs in the oil cylinder and the piston 4 deviates from the side of the end cap 2, only the fault location can be forcibly cut and broken. After overhaul and adjustment, it is welded and reconnected. Not only is the operation cumbersome, but the restored oil cylinder structure is also difficult to reach the original level in terms of sealing performance, reducing the service life of the oil cylinder.

[0031] Based on the above two considerations, the present utility model has made the following specific implementations.

[0032] Embodiment 1

[0033] Refer to Figures 1 to 5, A split and detachable oil cylinder, including a housing 1, an end cover 2, a piston 4 and an oil circuit. The housing 1 is connected to the oil circuit, and the oil circuit drives the piston 4 to slide relative to the housing 1. On the side of the housing 1 away from the end cover 2, there is a packaging part 3. The packaging part 3 includes symmetrically arranged packaging blocks 301, a movable plate 302, a primary fastener 303 and a secondary fastener 304. After the packaging blocks 301 are butted, they form a blockage for the housing 1. The movable plate 302 is clamped between the packaging block 301 and the end of the housing 1. The primary fastener 303 is fitted between the two packaging blocks 301. The secondary fastener 304 cooperates with the two packaging blocks 301. The secondary fastener 304 connects the two packaging blocks 301 and at the same time pushes the two packaging blocks 301 to tightly press against the housing 1.

[0034] When a fault occurs in the oil cylinder and the piston 4 deviates from the side of the end cover 2 and needs to be repaired, first release the secondary fastener 304 and then release the primary fastener 303. The two packaging blocks 301 can be separated in half. Then remove the movable plate 302, and the area on the side of the housing 1 where the piston 4 deviates from the end cover 2 can be exposed. Then repair this area. The entire repair process only requires two disassembly operations, without damaging the original structure of the oil cylinder. It not only achieves convenient and fast repair, but also has a high degree of restoration. After the repair is completed and restored, it has no adverse impact on the normal use performance of the oil cylinder, significantly highlighting the benefits of the split design of the oil cylinder.

[0035] Embodiment 2

[0036] Reference Figure 3 and Figure 4 , Based on the above embodiment, in this embodiment, the action modes of the primary fastener 303 and the secondary fastener 304 are specifically described:

[0037] The primary fastener 303 includes a connecting rod 3031 and a connecting sleeve 3032. The connecting rod 3031 is threadedly connected to the connecting sleeve 3032. One packaging block 301 is in extrusion contact with the outer convex surface of the end of the connecting rod 3031, and the other packaging block 301 is in extrusion contact with the connecting sleeve 3032. The primary fastener 303 adopts a threaded connection form, making full use of the characteristic that the threaded connection structure will limit the position from both ends to the middle. The packaging block 301 through the primary fastener 303 has been preliminarily aligned and fastened;

[0038] On this basis, the secondary fastener 304 includes a shaft rod 3041, a transfer sleeve 3042, a male locking part 3043 and a female locking part 3044. The shaft rod 3041 is inserted between the two packaging blocks 301. The transfer sleeve 3042 is slidably sleeved on the end of the shaft rod 3041. The male locking part 3043 is arranged on the transfer sleeve 3042, and the female locking part 3044 is arranged on the packaging block 301. The male locking part 3043 and the female locking part 3044 are detachably locked and matched;

[0039] First, from the perspective of position, the connection positions of the secondary fastener 304 and the primary fastener 303 to the encapsulation block 301 are symmetrically distributed relative to the overall connection, which reflects the uniformity of the overall fastening effect;

[0040] Next, from the perspective of the action mode, the primary fastener 303 realizes the connection function in the docking movement direction of the encapsulation block 301, while the pressing direction of the secondary fastener 304 is perpendicular to the above direction, causing the encapsulation block 301 to be pressed tightly against the housing 1 side. The locking effects in different directions reflect the comprehensiveness of the overall fastening effect;

[0041] Generally speaking, the primary fastener 303 and the secondary fastener 304 form a segmented process for the fastening effect, improving the split design of the entire oil cylinder.

[0042] Embodiment III

[0043] Based on the above embodiment, in the secondary fastener 304, the connection method of the relevant structure needs to be specifically described to reflect the rationality of the implementation of the secondary fastener 304.

[0044] Reference Figure 5 , the adapter sleeve 3042 includes an inner ring and an outer ring, and the inner ring and the outer ring rotate relative to each other, which also means that the male locking member 3043 can rotate relative to the shaft rod 3041 to form a detachable locking fit with the female locking member 3044;

[0045] Reference Figure 5 , a convex tooth is fixed at the end of the shaft rod 3041, and a groove matching with the convex tooth is opened on the inner ring, indicating that the relative sliding relationship between the adapter sleeve 3042 and the shaft rod 3041 can be realized;

[0046] Reference Figure 5 , the outer ring is fixedly connected to the male locking member 3043 to support the rotation of the male locking member 3043 relative to the shaft rod 3041 as described above;

[0047] Reference Figure 5 , a coil spring is provided between the outer ring and the inner ring. When the outer ring rotates relative to the inner ring, the deformation accumulates the rotational potential energy. The radial rotational tendency provided by the coil spring is an inevitable condition for realizing the fastening fit between the male locking member 3043 and the female locking member 3044. Under this tendency, the male locking member 3043 has a rotational tendency and will press tightly against the female locking member 3044;

[0048] A cover plate for encapsulating the coil spring is fixed on one side of the outer ring, limiting the installation position of the coil spring so that it can only act during the relative rotation of the outer ring and the inner ring.

[0049] In cooperation with the above, the male locking member 3043 is in the shape of a U-shaped rod, and the female locking member 3044 is provided with a circular tubular notch that cooperates with the male locking member 3043. When the male locking member 3043 and the female locking member 3044 are in the locked state, the deflection angle of the male locking member 3043 relative to the shaft rod 3041 is 30 degrees.

[0050] To sum up the above, taking the removal of the secondary fastener 304 as an example, when removing, first press down the male locking member 3043 and then pull it to disengage it from the female locking member 3044. Then, bend both end portions of the male locking member 3043 outward, so that the adapter sleeve 3042 slides off the shaft rod 3041. Finally, slide the shaft rod 3041 out relative to the two encapsulation portions 3.

[0051] It should be specifically noted that to achieve the above functions, the male locking member 3043 needs to have a certain elasticity, and a suitable material can be selected for manufacturing. The corresponding suitable materials belong to the category of existing technologies and will not be elaborated here.

[0052] Embodiment 4

[0053] As mentioned in the above embodiment, the deflection angle of the male locking member 3043 relative to the shaft rod 3041 is 30 degrees. That is, in the locked state, the male locking member 3043 is pressed against the female locking member 3044 in an inclined posture. The following is a specific analysis of the mechanical effects generated in this locking posture:

[0054] Refer to Figure 6 , in the locked state, since the secondary fasteners 304 are arranged in pairs, the force generated by the male locking member 3043 located above is inclined upward, and this force is denoted as F, which is shown in Figure 6 in red. Relatively, the force generated by the male locking member 3043 located below is inclined downward, and this force is denoted as F', which is shown in Figure 6 in blue;

[0055] Decompose F and F'. F is decomposed into f1 and f2, and F' is decomposed into f3 and f4. Among them, f1 and f3 are the same in magnitude and opposite in direction, so they cancel each other out, while f2 and f4 are the same in magnitude and the same in direction, and are superimposed in the same direction, causing the encapsulation block 301 to press tightly against the housing 1.

[0056] Embodiment 5

[0057] On the basis of the above embodiment, refer to Figure 2 , the oil circuit includes a first oil passage pipe 501 and a second oil passage pipe 502. The connection between the first oil passage pipe 501 and the housing 1 is arranged between the maximum limit of the piston 4 stroke and the end cover 2. The second oil passage pipe 502 passes through the encapsulation portion 3 and then communicates with the housing 1. This is the conventional setting method of the oil circuit.

[0058] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present utility model. In addition, "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0059] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] The above has described in detail an embodiment of the present utility model, but the content described is only the preferred embodiment of the present utility model and cannot be considered as used to limit the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the scope covered by the patent of the present utility model.

Claims

1. A split-type detachable oil cylinder, comprising a housing (1), an end cover (2), a piston (4) and an oil circuit, wherein the housing (1) is communicated with the oil circuit, and the oil circuit drives the piston (4) to slide relative to the housing (1), characterized in that, On one side of the housing (1) away from the end cap (2), there is a packaging part (3), and the packaging part (3) includes: Symmetrically arranged packaging blocks (301), and after the packaging blocks (301) are butted, they form a blockage for the housing (1); A movable plate (302), which is clamped between the packaging block (301) and the end of the housing (1); A primary fastener (303), which is fitted between the two packaging blocks (301); A secondary fastener (304), which cooperates with the two packaging blocks (301), and the secondary fastener (304) connects the two packaging blocks (301) and simultaneously pushes the two packaging blocks (301) to press tightly against the housing (1).

2. The split-type detachable oil cylinder according to claim 1, characterized in that, The primary fastener (303) includes a connecting rod (3031) and a connecting sleeve (3032), the connecting rod (3031) is threadedly connected to the connecting sleeve (3032), one packaging block (301) is in extrusion contact with the convex outer surface of the end of the connecting rod (3031), and the other packaging block (301) is in extrusion contact with the connecting sleeve (3032).

3. The split-type detachable oil cylinder according to claim 1, characterized in that, The secondary fastener (304) includes: A shaft rod (3041), which is inserted between the two packaging blocks (301); A transfer sleeve (3042), which is slidably sleeved on the end of the shaft rod (3041); A male locking part (3043) and a female locking part (3044), the male locking part (3043) is arranged on the transfer sleeve (3042), the female locking part (3044) is arranged on the packaging block (301), and the male locking part (3043) and the female locking part (3044) are detachably locked and matched.

4. A split and detachable oil cylinder according to claim 3, characterized in that, The transfer sleeve (3042) includes an inner ring and an outer ring, and the inner ring and the outer ring rotate relative to each other.

5. The split and detachable oil cylinder according to claim 4, wherein A convex tooth is fixed at the end of the shaft rod (3041), and a groove matching the convex tooth is opened on the inner ring.

6. A split and detachable oil cylinder according to claim 4, characterized in that, The outer ring is fixedly connected to the male locking part (3043).

7. A split and detachable oil cylinder according to claim 4, characterized in that A coil spring is arranged between the outer ring and the inner ring, and when the outer ring rotates relative to the inner ring, deformation accumulates rotational potential energy.

8. A split and detachable oil cylinder according to claim 7, characterized in that, A cover plate for packaging the coil spring is fixed on one side of the outer ring.

9. The split and detachable oil cylinder according to claim 3, wherein, The male locking part (3043) is in the shape of a U-shaped rod, and a circular tubular notch matching the male locking part (3043) is arranged on the female locking part (3044). When the male locking part (3043) and the female locking part (3044) are in the locked state, the deflection angle of the male locking part (3043) relative to the shaft rod (3041) is 30 degrees.

10. A split and detachable oil cylinder according to claim 1, characterized in that, The oil circuit includes a first oil passage pipe (501) and a second oil passage pipe (502). The connection part of the first oil passage pipe (501) and the housing (1) is arranged between the maximum limit of the piston (4) stroke and the end cap (2), and the second oil passage pipe (502) penetrates through the packaging part (3) and then communicates with the housing (1).

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