Reciprocating compressor connecting rod crosshead pin disassembling and assembling tool

Abstract

The utility model relates to a reciprocating compressor connecting rod crosshead pin disassembling and assembling tool which comprises an inverted-L-shaped supporting plate, a plurality of lifting holes are formed in the upper end of the inverted-L-shaped supporting plate, an installation base is installed at the lower end of the inverted-L-shaped supporting plate, a fixing groove is formed in one side of the installation base and is in threaded connection with a threaded rod, and pressing plates are connected to the two ends of the inner side of the threaded rod. The two ends of the outer side of the threaded rod are in threaded connection with first fastening nuts, the threaded rod penetrates through an inner hole of the cross head pin, the pressing plates on the two sides of the threaded rod are tightly attached to the two ends of the cross head pin, and the first fastening nuts fasten the pressing plates so that the pressing plates can press the cross head pin. And then the lifting holes are selected according to the gravity center of the crosshead pin to lift the whole crosshead pin, so that the crosshead pin is balanced, the center-of-gravity position of the middle of the crosshead pin is ensured, the crosshead pin and the small end part of the connecting rod cannot interfere with each other when the crosshead pin is mounted, and the crosshead pin can be pulled out or remounted independently by only one person in the dismounting and mounting process.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor component installation, in particular to a reciprocating compressor connecting rod cross pin disassembly and assembly tool. Background Art

[0002] Reciprocating compressors are often needed in petrochemical projects. When inspecting and repairing them, the compressor connecting rod needs to be disassembled, and then the connecting rod large and small head bearings need to be inspected and measured. Since the compressor connecting rod needs to be removed together with the cross pin, the existing technology mainly uses a turntable to lift the connecting rod upright and then lift it off the crankcase. After the connecting rod is vertically placed on the platform, it is fixed, and then the cross pin is pulled out of the small head bearing in a horizontal state, and it is lifted out by tying the cross pin with a sling. However, when disassembling and assembling it, three people are required to hold the connecting rod body, and three people cooperate to continuously move the sling to the center of gravity position, and one person operates the overhead crane to cooperate with the lifting, which seriously wastes manpower, and the cross pin is tilted during the process of pulling out. The small clearance causes jamming, resulting in an imbalance of the center of gravity when the cross pin leaves the small head bearing. The cross pin hits the alloy layer of the small head bearing, causing damage and requiring the small head bearing to be replaced separately, which increases the maintenance cost and affects the maintenance manpower progress. Utility Model Content

[0003] The purpose of the utility model is to design a reciprocating compressor connecting rod cross pin disassembly and assembly tool, which can ensure that the middle of the cross pin is the center of gravity, and the cross pin will not interfere with the small head part of the connecting rod during installation, and only one person is needed to independently complete the pulling out or reinstalling of the cross pin during the disassembly and assembly process, so as to solve the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reciprocating compressor connecting rod cross pin disassembly and assembly tool is provided, comprising an inverted L-shaped support plate, a plurality of lifting holes are provided at the upper end of the inverted L-shaped support plate, a mounting seat is installed at the lower end of the inverted L-shaped support plate, a fixing groove is provided on one side of the mounting seat, an internal thread is provided in the fixing groove, the fixing groove is threadedly connected to the threaded rod through the internal thread, the two ends of the inner side of the threaded rod are connected to the pressure plate, and the two ends of the outer side of the threaded rod are threadedly connected to the first fastening nut.

[0005] Furthermore, the pressing plate is a conical pressing plate.

[0006] Furthermore, a through hole is provided on a side of the mounting seat avoiding the fixing groove, and the through hole is for the auxiliary balancing rod to pass through.

[0007] Furthermore, both ends of the auxiliary balancing rod are provided with external threads, and the auxiliary balancing rod is threadedly connected to the second fastening nut through the external threads.

[0008] Furthermore, the threaded rod includes a threaded portion and a sleeve portion, the sleeve portion is a screw, an internal thread is provided in the sleeve portion, and the threaded portion is threadedly connected to the sleeve portion via the internal thread.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The utility model arranges an inverted L-shaped support plate, a threaded rod passes through the inner hole of the cross pin, and pressure plates on both sides of the threaded rod are tightly attached to the two ends of the cross pin. Then, under the action of the first fastening nut and the threaded connection of the threaded rod, the first fastening nut fastens the pressure plate so that the pressure plate presses the cross pin. Then, a lifting hole is selected according to the center of gravity of the cross pin, and the entire cross pin is lifted to balance the cross pin, ensuring that the middle of the cross pin is the center of gravity. When the cross pin is installed, it will not interfere with the small head part of the connecting rod, and only one person is needed to independently complete the pulling out or reinstalling of the cross pin during the disassembly and assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] The names of the components marked in the figure are as follows:

[0014] 1. Inverted L-shaped support plate; 2. Lifting hole; 3. Mounting seat; 4. Fixing groove; 5. Threaded rod; 6. Pressing plate; 7. First fastening nut; 8. Auxiliary balance rod; 9. Second fastening nut; 10. Threaded part; 11. Casing part. DETAILED DESCRIPTION

[0015] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0016] Example: Reference Figure 1A reciprocating compressor connecting rod cross pin disassembly and assembly tool, comprising an inverted L-shaped support plate 1, a plurality of lifting holes 2 are opened at the upper end of the inverted L-shaped support plate 1, and the plurality of lifting holes 2 are evenly arranged on the inverted L-shaped support plate 1. The lifting holes 2 are selected according to the center of gravity of the cross pin, and the entire cross pin is hoisted to maintain the balance state of the cross pin, thereby ensuring that the middle of the cross pin is the center of gravity. When the cross pin is installed, it will not interfere with the small head part of the connecting rod, and only one person is needed to independently complete the pulling out or reinstalling of the cross pin during the disassembly and assembly process, thereby avoiding the process of multiple people cooperating to frequently move the sling to adjust the center of gravity. The lower end of the inverted L-shaped support plate 1 is installed with a mounting seat 3, one side of the mounting seat 3 is provided with a fixing groove 4, the fixing groove 4 is provided with an internal thread, the fixing groove 4 is threadedly connected to the threaded rod 5 through the internal thread, and the two ends of the outer side of the threaded rod 5 are threadedly connected to the first fastening nut 7; the two ends of the inner side of the threaded rod 5 are connected with a pressing plate 6, which is a conical pressing plate 6, ensuring that the taper of the pressing plate 6 matches the taper of the side of the cross pin, and then the pressing plate 6 is fastened by the first fastening nut 7, so that the cross pin can be pressed. The threaded rod 5 includes a threaded portion 10 and a sleeve portion 11, the sleeve portion 11 is a screw, and the sleeve portion 11 is provided with an internal thread, and the threaded portion 10 is threadedly connected to the sleeve portion 11 through the internal thread, and the length of the threaded rod 5 can be adjusted according to the length of the cross pin. A through hole is provided on one side of the mounting seat 3 avoiding the fixing groove 4, through which the auxiliary balancing rod 8 can pass; both ends of the auxiliary balancing rod 8 are provided with external threads, and the auxiliary balancing rod 8 is threadedly connected to the second fastening nut 9 through the external threads. The installation posture can be fine-tuned by manually adjusting the length of the auxiliary balancing rod 8 on both sides with the mounting seat 3 as the base point, so that the cross pin can be disassembled and adjusted in position and angle, the cross pin can be accurately installed and the maintenance progress can be improved, ensuring that the cross pin can move horizontally and in a balanced manner.

[0017] The working principle of the utility model is as follows: when in use, according to the length of the cross pin, under the action of the threaded connection between the threaded part 10 and the sleeve part 11, the length of the threaded rod 5 is adjusted; after the adjustment is completed, the threaded rod 5 passes through the inner hole of the cross pin, and the pressure plates 6 on both sides of the threaded rod 5 are close to the two ends of the cross pin, and the first fastening nut 7 is threadedly connected with the threaded rod 5, and the first fastening nut 7 fastens the pressure plate 6 so that the pressure plate 6 presses the cross pin; then, according to the center of gravity of the cross pin, the lifting hole 2 is selected to lift the entire cross pin to maintain the balance of the cross pin and ensure that the center of gravity is in the middle of the cross pin; manually adjust the auxiliary balance rod 8 to fine-tune the installation posture with the length on both sides of the mounting seat 3 as the base point, so that the cross pin can be disassembled and adjusted in position and angle to ensure that the cross pin can move horizontally in balance, and work in this way.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0019] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0020] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A reciprocating compressor connecting rod cross pin disassembly and assembly tool, characterized in that: The invention comprises an inverted L-shaped support plate (1), wherein a plurality of hanging holes (2) are provided at the upper end of the inverted L-shaped support plate (1), a mounting seat (3) is installed at the lower end of the inverted L-shaped support plate (1), a fixing groove (4) is provided on one side of the mounting seat (3), an internal thread is provided in the fixing groove (4), the fixing groove (4) is threadedly connected to a threaded rod (5) via the internal thread, the two ends of the inner side of the threaded rod (5) are connected to a pressing plate (6), and the two ends of the outer side of the threaded rod (5) are threadedly connected to a first fastening nut (7).

2. The reciprocating compressor connecting rod cross pin disassembly and assembly tool according to claim 1, characterized in that: The pressing plate (6) is a conical pressing plate (6).

3. The reciprocating compressor connecting rod cross pin disassembly and assembly tool according to claim 1, characterized in that: A through hole is provided on one side of the mounting seat (3) avoiding the fixing groove (4), and the through hole is used for the auxiliary balancing rod (8) to pass through.

4. The reciprocating compressor connecting rod cross pin disassembly and assembly tool according to claim 3, characterized in that: External threads are provided at both ends of the auxiliary balancing rod (8), and the auxiliary balancing rod (8) is threadedly connected to a second fastening nut (9) via the external threads.

5. The reciprocating compressor connecting rod cross pin disassembly and assembly tool according to claim 1, characterized in that: The threaded rod (5) comprises a threaded portion (10) and a sleeve portion (11); the sleeve portion (11) is a screw rod; an internal thread is provided in the sleeve portion (11); the threaded portion (10) is threadedly connected to the sleeve portion (11) via the internal thread.

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