Centering device for piston installation

Abstract

The utility model discloses a centering device for installing a piston. The centering device comprises a base, the support is arranged on the base and can move in the axial direction of the piston; the piston bracket is arranged on the bracket in a manner of moving up and down; the piston bracket is provided with a first supporting bracket used for supporting the piston and a first supporting rod connected with the first supporting bracket, and the first supporting rod is arranged on the support and can move up and down. The piston bracket can move up and down and is used for supporting the piston; the piston bracket moves up and down to drive the piston to move up and down, so that the piston and the piston rod are aligned in the up-down direction; the support is arranged on the base in the mode of being capable of moving in the axial direction of the piston, and after the piston and the piston rod are aligned in the axis direction, installation of the piston and the piston rod is achieved through movement of the support, and the piston is installed in the cylinder body.

Description

Technical Field

[0001] The utility model belongs to the technical field of piston installation, and in particular relates to a centering device for piston installation. Background Art

[0002] For some large equipment equipped with cylinders, the cylinders need to be disassembled during maintenance, especially the pistons as movable friction parts need to be inspected, maintained or replaced. When assembling the piston after maintenance, in order to ensure installation accuracy, it is necessary to first ensure that the piston rod is on the central axis of the cylinder body, and then accurately align the central axis of the piston with the central axis of the piston rod. However, since the cylinder body is not disassembled from the equipment, the construction space is small, and in the case of large size and heavy weight of the piston, it is very difficult to align the central axis of the piston with the central axis of the piston rod.

[0003] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] In view of the above problems in the prior art, the utility model proposes a centering device for piston installation, which can achieve accurate alignment of the piston and the piston rod, thereby improving installation accuracy, improving installation efficiency, and reducing the labor intensity of installation operations.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0006] A centering device for piston installation, comprising:

[0007] Base;

[0008] A bracket, which is movable along the axial direction of the piston and is arranged on the base;

[0009] A piston bracket, which is movably arranged on the bracket;

[0010] The piston bracket comprises a first support bracket for supporting the piston and a first support rod connected to the first support bracket, wherein the first support rod is movable up and down on the bracket.

[0011] In some embodiments of the present application, a first through hole for the first support rod to pass through is opened on the bracket, and the first through hole is matched with the first support rod.

[0012] In some embodiments of the present application, an adjusting nut is sleeved on the first support rod, and the adjusting nut is located on the upper side of the first through hole.

[0013] In some embodiments of the present application, the first support bracket is an arc-shaped plate that matches the outer side wall of the piston.

[0014] In some embodiments of the present application, a roller is provided at the bottom of the bracket, and a track matching the roller is provided on the base.

[0015] In some embodiments of the present application, the bracket has a bottom beam and two side beams arranged on the bottom beam, and the two side beams are close to each other in an upward direction.

[0016] In some embodiments of the present application, a second through hole for the first support rod to pass through is opened on the bottom beam, and the second through hole is coaxially arranged with the second through hole.

[0017] In some embodiments of the present application, the bracket further has a top beam located on the upper side of the side beam, and the first through hole is opened on the top beam.

[0018] In some embodiments of the present application, a piston rod supporting structure for achieving coaxiality between the piston rod and the cylinder body is also included, and the piston rod supporting structure is supported between the piston rod and the cylinder body.

[0019] In some embodiments of the present application, the piston rod supporting structure has a second supporting bracket for supporting the piston rod, a supporting bottom supported on the inner side of the cylinder body, and a second supporting rod connected between the second supporting bracket and the supporting bottom.

[0020] In some embodiments of the present application, the second support rod is fixed on one of the second support bracket and the support base, and a matching plate is provided on the other of the second support bracket and the support base for cooperating with the second support rod to adjust the distance between the second support bracket and the support base, and the second support rod is relatively movably provided on the matching plate.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are: the piston bracket can be moved up and down and is used to support the piston; the up and down movement of the piston bracket drives the piston to move up and down, and the piston and the piston rod are aligned in the up and down directions; a bracket is provided, which can be moved along the axial direction of the piston and is arranged on the base. After the piston and the piston rod are aligned with the axis, the piston and the piston rod are installed and the piston is installed in the cylinder body through the movement of the bracket. The centering device can realize the precise alignment of the piston and the piston rod, which is conducive to improving the installation accuracy, improving the installation efficiency, and reducing the labor intensity of the installation operation.

[0022] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a structural schematic diagram of an embodiment of a centering device for piston installation proposed by the utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the centering device;

[0026] Figure 3 is a structural schematic diagram of a piston bracket;

[0027] Figure 4 is a schematic diagram of the structure of the bracket;

[0028] Figure 5 for Figure 4 A schematic diagram of the structure from another angle;

[0029] Figure 6 It is a structural schematic diagram of the piston rod supporting structure;

[0030] Among them, the centering device 100;

[0031] Base 10;

[0032] Bracket 20; bottom beam 21; second through hole 211; side beam 22; first through hole 231; top beam 23; roller 24;

[0033] Piston bracket 30; first support bracket 31; first support rod 32; adjustment nut 33;

[0034] Piston rod support structure 40; second support bracket 41; second support rod 42; support bottom 43; matching plate 431;

[0035] Piston cylinder 200; cylinder body 210; piston 220; piston rod 230. Implementation

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0037] In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the positional relationships shown in the accompanying drawings, with the direction close to the piston axis being "inside" and the opposite being "outside". The terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0041] See also Figure 1-Figure 6 As shown in FIG. 1 , an embodiment of a centering device for piston installation proposed by the utility model is shown. The piston cylinder 200 comprises a cylinder body 210, a piston 220 which can be arranged in the cylinder body 210, and a piston rod 230 which drives the piston 220 to move. After the piston rod 230 extends out of the cylinder body 210, it is connected to the driving structure. When the piston rod 200 is repaired, the piston 220 needs to be disassembled for inspection, maintenance, or replacement.

[0042] In this embodiment, a centering device 100 for piston installation includes: a base 10, a bracket 20 and a piston bracket 30, wherein the bracket 20 is arranged on the base 10 and can be moved along the axial direction of the piston 220, that is, the bracket 20 is movably arranged on the base 10, and the moving direction of the bracket 20 is along the axial direction of the piston 220; after the axial centers of the piston 220 and the piston rod 230 are aligned, the piston 220 is moved closer to the cylinder body 210 by moving the bracket 20. The piston bracket 30 is arranged on the bracket 20 and can be moved up and down, and the piston 220 is driven to move in the up and down direction by the up and down movement of the piston bracket 30. The piston bracket 30 has a first support bracket 31 for supporting the piston 220, and a first support rod 32 connected to the first support bracket 31, and the first support rod 32 is arranged on the bracket 20 and can be moved up and down.

[0043] The piston bracket 30 is provided to be movable up and down and used to support the piston 220; the piston bracket 30 moves up and down, driving the piston 220 to move up and down, and realizing the alignment of the piston 220 and the piston rod 230 in the up and down directions; the bracket 20 is provided, which can be moved along the axial direction of the piston 210 and is arranged on the base 10. After the piston 220 and the piston rod 230 realize the axial alignment, the piston 220 and the piston rod 230 are installed and the piston 230 is installed in the cylinder body 210 through the movement of the bracket 20. The centering device 100 can realize the precise alignment of the piston 220 and the piston rod 230, which is conducive to improving the installation accuracy, improving the installation efficiency, and reducing the labor intensity of the installation operation.

[0044] In some embodiments of the present application, see Figure 2 and Figure 4 As shown, a first through hole 231 for the first support rod 32 to pass through is provided on the bracket 20, and the first through hole 231 is matched with the first support rod 32. An adjusting nut 33 is sleeved on the first support rod 32, and the adjusting nut 33 is located on the upper side of the first through hole 231. By rotating the adjusting nut 33, the first support rod 32 can be moved up and down.

[0045] In some embodiments of the present application, the first support bracket 31 is an arc-shaped plate matching the outer side wall of the piston 220, which is conducive to increasing the contact area between the first support bracket 31 and the piston 220, and realizing stable support for the piston 220. A roller 24 is provided at the bottom of the bracket 20, and a track matching the roller 24 is provided on the base 10, which is used to realize the axial movement of the bracket 20 along the piston 220. The base 10 is placed below the cylinder body 210, and the track on the base 10 is arranged parallel to the axis of the piston 220.

[0046] In some embodiments of the present application, the bracket 20 has a bottom beam 21 and two side beams 22 arranged on the bottom beam 21, and the two side beams 22 are close to each other in the upward direction. A second through hole 211 for the first support rod 32 to pass through is provided on the bottom beam 21, and the second through hole 211 is matched with the first support rod 32. The second through hole 211 is coaxially arranged with the first through hole 231, and the first support rod 32 passes through the first through hole 231 and the second through hole 211, which ensures that the first support rod 32 is coaxially arranged with the first through hole 231, ensures the vertical state of the first support rod 32, and realizes the up and down movement of the first support rod 32. The bracket 20 also has a top beam 23 located on the upper side of the side beam 22, and the first through hole 231 is provided on the top beam 23.

[0047] In some embodiments of the present application, see Figure 1 As shown, the centering device 100 also includes a piston rod support structure 40 for achieving coaxiality between the piston rod 230 and the cylinder body 210, and the piston rod support structure 40 is supported between the piston rod 230 and the cylinder body 210. After the piston 220 is disassembled, in order to ensure that the piston rod 230 continues to be at the axial center position of the cylinder body 210, the piston rod support structure 40 is used to support the piston rod 230. After the piston 220 and the piston rod 230 are installed, the piston 220 and the piston rod 230 are coaxially arranged, which can ensure the coaxiality of the piston 220 and the cylinder body 210. Therefore, when the piston 220 is installed, it is necessary to achieve the alignment of the piston 220 and the piston rod 230, so that the piston 220 is installed on the piston rod 230.

[0048] In some embodiments of the present application, the piston rod support structure 40 has a second support bracket 41 for supporting the piston rod 230, a support bottom 43 supported on the inner side of the cylinder body 210, and a second support rod 42 connected between the second support bracket 41 and the support bottom 43. The second support bracket 41 is an arc-shaped plate matching the piston rod 230, and the second support bracket 41 is coaxially arranged with the piston rod 230. The support bottom 43 is an arc-shaped plate matching the inner side of the cylinder body 210, and the support bottom 43 abuts against the inner wall of the cylinder body 210.

[0049] In some embodiments of the present application, the second support rod 42 is fixed on the second support bracket 41, and a matching plate 431 is provided on the support bottom 43, and the second support rod 42 can be relatively movably arranged on the matching plate 431; the matching plate 431 cooperates with the second support rod 42 to realize the adjustment of the distance between the second support bracket 41 and the support bottom 43; it is convenient for the piston rod support structure 40 to be installed between the piston rod 230 and the cylinder body 210, so that the piston rod support structure 40 can be used for the installation of pistons of piston levers 200 of different sizes, thereby increasing versatility.

[0050] In some embodiments of the present application, the relative movement of the second support rod 42 and the mating plate 431 can be achieved by providing a nut sleeved on the second support rod 42, or by opening a threaded hole on the mating plate 431 that matches the second support rod 42.

[0051] In some other embodiments of the present application, a second support bracket 42 may be provided on the second support bracket 41 , and a second support rod 42 may be provided on the support bottom 43 .

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A centering device for piston installation, characterized in that: include: Base; A bracket, which is movable along the axial direction of the piston and is arranged on the base; A piston bracket, which is movably arranged on the bracket; The piston bracket comprises a first support bracket for supporting the piston and a first support rod connected to the first support bracket, wherein the first support rod is movable up and down on the bracket.

2. The centering device according to claim 1, characterized in that: The bracket is provided with a first through hole for the first support rod to pass through, and the first through hole is matched with the first support rod.

3. The centering device according to claim 2, characterized in that: An adjusting nut is sleeved on the first supporting rod, and the adjusting nut is located on the upper side of the first through hole.

4. The centering device according to claim 1, characterized in that: A roller is arranged at the bottom of the bracket, and a track matching the roller is arranged on the base.

5. The centering device according to claim 2, characterized in that: The bracket comprises a bottom beam and two side beams arranged on the bottom beam, and the two side beams are close to each other in an upward direction.

6. The centering device according to claim 5, characterized in that: A second through hole for the first support rod to pass through is opened on the bottom beam, and the second through hole is coaxially arranged with the second through hole.

7. The centering device according to claim 6, characterized in that: The bracket also has a top beam located on the upper side of the side beam, and the first through hole is opened on the top beam.

8. The centering device according to any one of claims 1 to 7, characterized in that: It also includes a piston rod supporting structure for achieving coaxiality between the piston rod and the cylinder body, wherein the piston rod supporting structure is supported between the piston rod and the cylinder body.

9. The centering device according to claim 8, characterized in that: The piston rod supporting structure comprises a second supporting bracket for supporting the piston rod, a supporting bottom supported on the inner side of the cylinder body, and a second supporting rod connected between the second supporting bracket and the supporting bottom.

10. The centering device according to claim 9, characterized in that: The second support rod is fixed on one of the second support bracket and the support base, and a matching plate is provided on the other of the second support bracket and the support base for cooperating with the second support rod to adjust the distance between the second support bracket and the support base, and the second support rod is relatively movably arranged on the matching plate.

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