Electric pneumatic contactor air cylinder leather cup installation tool

Abstract

The utility model discloses an electric pneumatic contactor air cylinder leather cup installation tool, and relates to the field of air cylinder disassembling and assembling tools. A 4Q1 series direct-current air contactor is widely applied to diesel locomotives such as DF4, DF7, DF8 and the like, a leather cup in an air cylinder of the contactor needs to be frequently replaced, the leather cup can be replaced only by using three fingers to overcome 244N to compress an air cylinder spring by 30 mm to complete installation, the operation difficulty is large, and safety risks exist. The device comprises a supporting seat, a Y-shaped pinch bar, a U-shaped buckle and a fine-tuning feeler gauge, the supporting seat is hung at the bottom of the air cylinder, the fine-tuning feeler gauge is plugged in a gap between the supporting seat and the bottom of the air cylinder to prevent the supporting seat from shaking, and an auxiliary contact transmission sheet on a piston rod of the air cylinder and an auxiliary contact base are buckled by the U-shaped buckle to be temporarily fixed. And the Y-shaped pinch bar takes the cylindrical beam of the supporting seat as a fulcrum to pry a lower gasket of an air cylinder leather cup to upwards compress an air cylinder spring so as to mount a leather cup fixing nut. And compared with a traditional mounting mode, the safety and the working efficiency of mounting operation are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of air cylinder disassembly and assembly tools, in particular to an air cylinder leather cup installation tool for an electric-pneumatic contactor. Background Art

[0002] 4Q1 series DC air contactors are widely used in DF4, DF7, DF8 and other diesel locomotives, also known as main contactors. Because DF7C locomotives are mainly used as shunting locomotives and need to be frequently loaded and unloaded, the operating frequency of the 6 main contactors is also very high. The leather cup in the air cylinder is made of rubber and is prone to aging. In addition, frequent friction with the inner wall of the air cylinder greatly shortens the service life of the leather cup, so we replace the main contactor air cylinder leather cup more often. Due to the limitations of the contactor installation position and the inner diameter of the leather cup, we can only use 3 fingers to overcome 244N to compress the air cylinder spring 30mm to complete the installation when replacing the leather cup. The operation is difficult and time-consuming. If you are not careful, you may be injured by the spring, which poses a certain safety risk. Utility Model Content

[0003] The technical problem to be solved and the technical task proposed by the utility model are to improve and perfect the existing technical solutions, and provide an installation tool for the air cylinder leather cup of an electric-pneumatic contactor, so as to improve the safety and work efficiency of the leather cup replacement operation. To this end, the utility model adopts the following technical solutions.

[0004] An installation tool for an air cylinder cup of an electric-pneumatic contactor comprises a support seat, a Y-shaped pry bar, a U-shaped buckle and a fine-tuning feeler gauge, wherein the support seat is used to be set at the bottom of the air cylinder, and hooks are provided on the front and rear sides of the support seat so that the support seat hooks can hook the base of the air cylinder and the base of the air cylinder can be clamped between the hooks and the upper end surface of the support seat, the fine-tuning feeler gauge is used to plug the gap between the support seat and the bottom of the air cylinder to prevent the support seat from shaking, the U-shaped buckle is used to buckle the auxiliary contact transmission plate and the auxiliary contact base on the piston rod of the air cylinder for temporary fixation, and the Y-shaped pry bar is used to pry the lower gasket of the air cylinder cup with the cylindrical beam of the support seat as a fulcrum to compress the air cylinder spring upward so as to install the cup fixing nut. When in use, use a U-shaped clip to buckle the auxiliary contact transmission plate and the auxiliary contact base installed on the piston rod together to prevent the piston rod from moving up when the spring is compressed. Then buckle the support seat to the bottom of the air cylinder, and use a fine-tuning feeler gauge to fill the gap between the support seat and the bottom of the air cylinder to prevent the support seat from shaking. Put the air cylinder spring, leather cup, gasket, etc. into the air cylinder, and use a Y-shaped pry bar with the cylindrical beam of the support seat as a fulcrum to pry the gasket under the leather cup upward to compress the air cylinder spring. Then install the leather cup fixing nut, tighten it in place, and remove the installation tools. Compared with the traditional installation method, it effectively improves the safety and work efficiency of the installation operation.

[0005] As a preferred technical means: The support base includes a horizontal chassis, a hook, and a cylindrical beam. The horizontal chassis includes a front beam, a rear beam, and a left connecting beam. The left connecting frame is connected to the left ends of the front beam and the rear beam. Below the left ends of the front beam and the rear beam, there is a cylindrical beam seat, and a cylindrical beam in the front-back axial direction is provided on the cylindrical beam seat. There are 2 hooks in total, symmetrically arranged on the left parts of the front and rear sides of the horizontal chassis. The hook includes a hook part and a connecting part. The hook part of the hook is located above the horizontal chassis for hooking the base of the air cylinder, and the connecting part is located on the front and rear side surfaces of the horizontal chassis for connecting the horizontal chassis and the hook part. The structure is simple and can effectively hook the support base under the base of the air cylinder.

[0006] As a preferred technical means: The Y-shaped crowbar includes a crowbar head, a crowbar neck, a crowbar rod part, and a crowbar handle part. The crowbar head is parallel to the crowbar rod part, and the crowbar neck is obliquely connected between the crowbar head and the crowbar rod part. The crowbar head is in a flat arc bifurcated shape. The crowbar neck and the crowbar rod part are flat rods with the same thickness as the crowbar head. The crowbar handle part is in a hollow cylindrical shape. When prying, this structure can use the connection part between the crowbar head and the crowbar neck as a fulcrum and press down for prying. The force is relatively easy, and the round handle is convenient for holding and exerting force.

[0007] As a preferred technical means: After the crowbar rod part is inserted into the crowbar handle part, the connection part of the crowbar handle part is flattened to press the crowbar rod part, and then welded and fixed. This enables a firm connection between the crowbar rod part and the crowbar handle part, avoiding deformation of the connection part or detachment of the crowbar handle part during prying.

[0008] As a preferred technical means: The U-shaped buckle is formed by bending round steel. It is convenient to manufacture and has a low cost.

[0009] As a preferred technical means: There are 2 pairs of fine-tuning feeler gauges, and each pair of fine-tuning feeler gauges includes multiple feeler gauges. The 2 pairs of fine-tuning feeler gauges are respectively used for stuffing on the front and rear sides, and feeler gauges with corresponding thicknesses are selected for stuffing according to actual needs.

[0010] As a preferred technical means: The horizontal chassis, the hook, and the cylindrical beam seat are all welded together after being cut from sheet materials with the same thickness. Welding sheet materials with the same thickness together is convenient for processing and manufacturing, and has high structural strength.

[0011] As a preferred technical means: There is an interference fit between the cylindrical beam and the cylindrical beam seat. The connection is firm, which can effectively improve the structural strength and avoid deformation of the support base under force.

[0012] Beneficial effects: The tool has a simple structure, is convenient to manufacture and use. Compared with the traditional disassembly and assembly methods, the disassembly and assembly are simple and fast, effectively improving the safety and work efficiency of the installation operation. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the application of the present utility model.

[0014] Figure 2 It is a schematic diagram of the support seat structure in the present utility model.

[0015] Figure 3 It is a schematic diagram of the Y-shaped pry bar structure in the present utility model.

[0016] In the figure: 1, support seat; 2, Y-shaped pry bar; 3, U-shaped buckle; 4, fine-tuning feeler gauge; 5, air cylinder; 6, auxiliary contact drive piece; 101, hook; 102, cylindrical beam; 103, front beam; 104, rear beam; 105, left connecting beam; 106, cylindrical beam seat; 201, pry bar head; 202, pry bar neck; 203, pry bar rod; 204, pry bar handle; 501, base; 502, auxiliary contact base. Specific embodiments

[0017] The technical solutions of the present utility model will be further described in detail below with reference to the accompanying drawings of the specification.

[0018] The pneumatic-electric contactor air cylinder leather cup installation tool of the present utility model is applicable to the 4Q1 series of DC pneumatic-electric contactors of the 4Q1 series.

[0019] As Figures 1-3 shown, the pneumatic-electric contactor air cylinder leather cup installation tool includes a support seat 1, a Y-shaped pry bar 2, a U-shaped buckle 3 and a fine-tuning feeler gauge 4. The support seat 1 is used to be arranged at the bottom of the air cylinder 5. Hooks 101 are arranged on the front and rear sides of the support seat 1 so that the support seat 1 can hook the base 501 of the air cylinder 5 and make the base 501 of the air cylinder 5 be stuck between the hook 101 and the upper end face of the support seat 1. The fine-tuning feeler gauge 4 is used to be inserted into the gap between the support seat 1 and the bottom of the air cylinder 5 to prevent the support seat 1 from shaking. The U-shaped buckle 3 is used to buckle the auxiliary contact drive piece 6 on the piston rod of the air cylinder 5 and the auxiliary contact base 502 for temporary fixation. The Y-shaped pry bar 2 is used to pry the lower gasket of the air cylinder 5 leather cup upward with the cylindrical beam of the support seat as the fulcrum to compress the air cylinder 5 spring so as to install the leather cup fixing nut.

[0020] The support base 1 includes a horizontal chassis, a hook 101, and a cylindrical beam 102. The horizontal chassis includes a front beam 103, a rear beam 104, and a left connecting beam 105. The left connecting frame is connected to the left ends of the front beam 103 and the rear beam 104. Below the left ends of the front beam 103 and the rear beam 104, there is a cylindrical beam seat 106. A cylindrical beam 102 in the front-to-back axial direction is provided on the cylindrical beam seat 106. There is an interference fit between the cylindrical beam 102 and the cylindrical beam seat 106. There are 2 hooks 101 in total, symmetrically arranged on the left parts of the front and rear sides of the horizontal chassis, and 27 mm away from the left end of the horizontal chassis. The hook 101 includes a hook part and a connecting part. The hook part of the hook 101 is located above the horizontal chassis to hook the base 501 of the air cylinder 5. The horizontal chassis, the hook 101, and the cylindrical beam seat 106 are all welded into one body after being cut from sheet materials of the same thickness. In this example, the sheet material is 45# carbon steel with a thickness of 7 mm. The front-to-back width dimension of the horizontal chassis is 90 mm, the distance between the left and right ends of the horizontal chassis is 80 mm, the width of the front beam 103 and the rear beam 104 is 15 mm, the width of the left connecting frame is 13 mm, the height of the hook part is 17 mm, and the distance between the lower end of the hook part and the upper end surface of the horizontal chassis is 13 mm to be inserted into the base 501 of the air cylinder 5. The height of the cylindrical beam seat 106 is 35 mm, and the left-to-right width is 20 mm. The cylindrical beam 102 is made of a round steel with a diameter of ∅7. The connecting part is located on the front and rear side surfaces of the horizontal chassis and is used to connect the horizontal chassis and the hook part.

[0021] The Y-shaped pry bar 2 includes a pry bar head 201, a pry bar neck 202, a pry bar rod part 203, and a pry bar handle part 204. The pry bar head 201 is parallel to the pry bar rod part 203. The pry bar neck 202 is obliquely connected between the pry bar head 201 and the pry bar rod part 203. In this example, the angles between the pry bar neck 202 and the pry bar head 201 and the pry bar rod part 203 are both 120 degrees. The pry bar head 201 is in the shape of a semi-circular flat arc bifurcation with a diameter of ∅25. The pry bar neck 202 and the pry bar rod part 203 are flat bars with the same thickness as the pry bar head 201. The pry bar handle part 204 is in the shape of a hollow cylinder. After the pry bar rod part 203 is inserted into the pry bar handle part 204, the connecting part of the pry bar handle part 204 is flattened to press the pry bar rod part 203, and then welded and fixed to achieve a firm connection between the pry bar rod part 203 and the pry bar handle part 204. When prying, this structure can use the connection between the pry bar head 201 and the pry bar neck 202 as a fulcrum to press down for prying, and the force is relatively easy, and the round handle is convenient for holding with force.

[0022] For the convenience of manufacturing, the U-shaped buckle 3 is bent from a round steel with a diameter of ∅7. The two bending angles of the U shape are both 90 degrees. It is convenient to manufacture and has a low cost.

[0023] In order to select a feeler gauge with a suitable thickness according to the gap, there are 2 pairs of fine-tuning feeler gauges 4. Each pair of fine-tuning feeler gauges 4 includes 3 feeler gauges, among which 1 is a stainless steel sheet with a thickness of 1.8 mm and 2 are stainless steel sheets with a thickness of 0.9 mm. The length and width dimensions of the feeler gauge are 85✕14.8 mm. The 2 pairs of fine-tuning feeler gauges 4 are respectively used for stuffing on the front and back sides, and the feeler gauge with the corresponding thickness is selected for stuffing according to actual needs.

[0024] During use, use the U-shaped buckle 3 to fasten the auxiliary contact driving piece 6 and the auxiliary contact base 502 installed on the piston rod together to prevent the piston rod from moving up when the compression spring is compressed. Then buckle the support seat 1 on the bottom of the air cylinder 5, and use the fine-tuning feeler gauge 4 to fill the gap between the support seat and the bottom of the air cylinder 5 to prevent the support seat from shaking. Put the air cylinder 5 spring, leather cup, gasket, etc. into the air cylinder 5, and use the Y-shaped pry bar 2 to pry the gasket under the leather cup upward with the cylindrical beam of the support seat as the fulcrum to compress the air cylinder 5 spring. Then install the leather cup fixing nut, and remove the installation tool after fastening in place. Compared with the traditional installation method, the safety and work efficiency of the installation operation are effectively improved.

[0025] The above Figures 1-3 The electro-pneumatic contactor air cylinder leather cup installation tool shown above is a specific embodiment of the present invention, which has already reflected the substantial features and progress of the present invention. According to actual usage needs, under the inspiration of the present invention, equivalent modifications can be made to its shape, structure, etc., and all are within the protection scope of this solution.

Claims

1. The installation tool for the air cylinder cup of the electric-pneumatic contactor is characterized by: It includes a support seat, a Y-shaped pry bar, a U-shaped buckle and a fine-tuning feeler gauge. The support seat is used to be set at the bottom of the air cylinder. Hooks are provided on the front and rear sides of the support seat so that the support seat hooks can hook the base of the air cylinder and the base of the air cylinder can be clamped between the hooks and the upper end surface of the support seat. The fine-tuning feeler gauge is used to plug the gap between the support seat and the bottom of the air cylinder to prevent the support seat from shaking. The U-shaped buckle is used to buckle the auxiliary contact transmission plate on the piston rod of the air cylinder and the auxiliary contact base for temporary fixation. The Y-shaped pry bar is used to pry the lower gasket of the air cylinder leather cup with the cylindrical beam of the support seat as a fulcrum to compress the air cylinder spring upward to install the leather cup fixing nut.

2. The air cylinder cup installation tool for an electric-pneumatic contactor according to claim 1 is characterized in that: The support seat includes a horizontal base frame, a hook and a cylindrical beam. The horizontal base frame includes a front beam, a rear beam and a left connecting beam. The left connecting beam is connected to the left ends of the front beam and the rear beam. A cylindrical beam seat is provided below the left ends of the front beam and the rear beam. A front-to-rear axial cylindrical beam is provided on the cylindrical beam seat. There are two hooks in total, which are symmetrically arranged on the left parts of the front and rear sides of the horizontal base frame. The hook includes a hook portion and a connecting portion. The hook portion of the hook is located above the horizontal base frame to hook the base of the air cylinder. The connecting portion is located on the front and rear sides of the horizontal base frame to connect the horizontal base frame and the hook portion.

3. The air cylinder cup installation tool for an electric-pneumatic contactor according to claim 1, characterized in that: The Y-shaped pry bar includes a pry bar head, a pry bar neck, a pry bar rod and a pry bar handle. The pry bar head is parallel to the pry bar rod, the pry bar neck is obliquely connected between the pry bar head and the pry bar rod, the pry bar head is in the shape of a flat arc fork, the pry bar neck and the pry bar rod are flat bars with the same thickness as the pry bar head, and the pry bar handle is in the shape of a hollow cylinder.

4. The air cylinder cup installation tool for an electric-pneumatic contactor according to claim 3 is characterized in that: After the pry bar portion is inserted into the pry bar handle portion, the connecting portion of the pry bar handle portion is flattened to compress the pry bar portion, and then the pry bar portion is welded and fixed.

5. The air cylinder cup installation tool for an electric-pneumatic contactor according to claim 1, characterized in that: The U-shaped buckle is formed by bending round steel.

6. The air cylinder cup installation tool for an electric-pneumatic contactor according to claim 1, characterized in that: There are two pairs of fine-adjustment feeler gauges, and each pair of fine-adjustment feeler gauges includes a plurality of feeler gauges.

7. The air cylinder cup installation tool for an electric-pneumatic contactor according to claim 2, characterized in that: The horizontal base frame, the hook and the cylindrical beam seat are all cut from plates of the same thickness and then welded together.

8. The air cylinder cup installation tool for an electric-pneumatic contactor according to claim 7, characterized in that: The cylindrical beam and the cylindrical beam seat are in interference fit.

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