Hand-operated reversing device of electromagnetic reversing valve

Abstract

The utility model discloses a hand-operated reversing device of an electromagnetic reversing valve. The hand-operated reversing device comprises a fixed hoop, a functional frame and a compression bolt, the whole fixing hoop is annular, and the fixing hoop is fixed on the electromagnetic reversing valve; the whole functional frame is in a U shape and comprises two parallel end portions and a connecting portion connecting the two end portions, the end portions are fixedly connected with the fixing hoop through functional frame fixing bolts, and the connecting portion is in threaded connection with a compression bolt matched with the position of a manual operation button of the electromagnetic reversing valve. The manual reversing device of the electromagnetic reversing valve is reasonable in structural design, the fixing hoop serves as a fixing piece of the electromagnetic reversing valve, meanwhile, the functional frame is fixed to the fixing hoop and serves as an installation frame of the compression bolt, the compression bolt can be rotated to abut against or loosen a manual operation button of the electromagnetic reversing valve, and therefore the manual reversing device of the electromagnetic reversing valve is convenient to use. The manual reversing of the manual operation button of the electromagnetic reversing valve is completed, the pressing state can be maintained after adjustment is finished, the button state can be effectively fixed, and the application prospect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of manual control of electromagnetic reversing valves, and relates to a manual reversing device for an electromagnetic reversing valve. Background Art

[0002] The electromagnetic reversing valve is an indispensable control element in the hydraulic system. The working principle mainly involves the interaction between the force of the electromagnet and the spring force to realize the opening and closing of the valve and the change of the direction of the fluid. Specifically: when the electromagnet is energized, the magnetic field it generates will attract the magnet, and then push the valve core to move to the side away from the electromagnet. At this time, the relative position of the valve core and the valve seat changes, so that a certain path through which the oil flows is cut off, thereby achieving the effect of connecting the circuit. When the electromagnet is powered off, the spring force will push the valve core to the side of the electromagnet, and the relative position of the valve core and the valve seat will change, reconnecting the flow path of the oil, thereby changing the direction of the oil flow. This mechanism enables the electromagnetic reversing valve to control the position of the valve core according to the state of the electromagnet (power on or off), thereby realizing the change of the movement direction of the oil cylinder or oil motor.

[0003] During the installation of hydraulic system equipment, the hydraulic system needs to undergo a secondary oil flushing operation, which is performed using a formal hydraulic station and working oil. The purpose is to flush away impurities generated during the valve station reinstallation and pipeline connection process, and filter the hydraulic oil to the required clarity level. However, during the secondary oil flushing process of the hydraulic system, the electrical system is usually not put into operation, so the solenoid reversing valve needs to be manually reversing. At present, conventional solenoid reversing valves mainly push the manual operation buttons recessed in the valve heads at both ends of the solenoid reversing valve to complete this operation. Auxiliary tools are required to push the button. When manual reversing operation is required, the general operation site is mainly operated by homemade tools such as welding rod bending. However, this homemade tool has the defects of easy deformation and poor stability, which brings certain uncertainties to the operation, and it is impossible to maintain the state of the button continuously and stably.

[0004] Therefore, it is of great practical significance to develop a manual reversing device for an electromagnetic reversing valve which has a simple structure, is easy to operate, has good reliability and can fix the button state. Utility Model Content

[0005] Due to the above-mentioned defects in the prior art, the utility model provides a manual reversing device for an electromagnetic reversing valve which has a simple structure, is easy to operate, has good reliability and can fix the button state, so as to solve the problem that the homemade tools used for manual operation of the existing electromagnetic reversing valve by bending welding rods have poor stability, are inconvenient to operate and cannot continuously and stably maintain the button state.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A manual reversing device for an electromagnetic reversing valve comprises a fixing clamp, a functional frame and a clamping bolt;

[0008] The fixed clamp is annular in shape as a whole and is fixed on the electromagnetic reversing valve;

[0009] The functional frame is U-shaped as a whole, including two ends parallel to each other and a connecting part connecting the two ends. The ends are fixedly connected to the fixing clamps through the functional frame fixing bolts. The connecting part is threadedly connected with a clamping bolt that matches the position of the manual operation button of the electromagnetic reversing valve.

[0010] The manual reversing device of the electromagnetic reversing valve of the utility model has a reasonable structural design. A fixed clamp is used as a fixing part of the electromagnetic reversing valve. At the same time, a functional frame is fixed on the fixed clamp as a mounting frame of a clamping bolt. The manual operating button of the electromagnetic reversing valve can be tightened or loosened by rotating the clamping bolt to complete the manual reversing of the manual operating button of the electromagnetic reversing valve. After the adjustment is completed, the clamping state can be maintained, and the button state can be effectively fixed, so as to avoid affecting the secondary oil flushing of the hydraulic system (which may cause equipment damage) due to the sudden change of the state of the electromagnetic reversing valve button. The application prospect is good.

[0011] As the preferred technical solution:

[0012] In the manual reversing device for electromagnetic reversing valve as described above, the fixed hoop is a circular ring structure. Of course, the shape of the fixed hoop can be set according to actual needs, that is, the shape of the fixed position. Here, only one feasible technical solution is given.

[0013] A manual reversing device for an electromagnetic reversing valve as described above, wherein the fixed clamp comprises a semi-annular clamp I and a semi-annular clamp II which are symmetrically arranged and have the same size;

[0014] Both ends of the semi-annular clamp I are provided with extended fixing plates and the extended fixing plates are provided with through holes I;

[0015] The screw end of the clamp fixing bolt penetrates through hole I on the semi-annular clamp I and through hole I on the semi-annular clamp II and is threadedly connected with the clamp fixing nut to fix the semi-annular clamp I and the semi-annular clamp II.

[0016] A manual reversing device for an electromagnetic reversing valve as described above, wherein the middle parts of the semi-annular clamp I and the semi-annular clamp II are provided with screw holes I matching with the fixing bolts of the functional frame;

[0017] The end portion is provided with a through hole II matching the screw hole I;

[0018] The screw rod end of the functional frame fixing bolt penetrates through hole II and is threadedly connected with screw hole I.

[0019] A manual reversing device for an electromagnetic reversing valve as described above, wherein a screw hole II matching the clamping bolt is formed in the middle of the connecting portion;

[0020] The screw end of the clamping bolt penetrates into the screw hole II from the connecting portion away from the end side, and the clamping bolt is threadedly connected with the screw hole II.

[0021] The above technical solution is only a feasible technical solution of the present utility model, and the protection scope of the present utility model is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0022] The above utility model has the following advantages or beneficial effects:

[0023] (1) The manual reversing device of the electromagnetic reversing valve of the utility model has a reasonable structural design, with a fixed clamp as the fixing part of the electromagnetic reversing valve, and the functional frame is fixed on the fixed clamp as a mounting frame for the clamping bolt, and the overall structural stability and reliability are good;

[0024] (2) The manual reversing device of the electromagnetic reversing valve of the utility model can tighten or loosen the manual operating button of the electromagnetic reversing valve by rotating the clamping bolt, thereby completing the manual reversing of the manual operating button of the electromagnetic reversing valve, and the operation is convenient;

[0025] (3) The manual reversing device of the electromagnetic reversing valve of the utility model can maintain the pressed state after the adjustment is completed, and can effectively fix the button state, thereby avoiding the influence of the secondary oil flushing of the hydraulic system (which may cause damage to the equipment) due to the sudden change of the button state of the electromagnetic reversing valve;

[0026] (4) The manual reversing device of the electromagnetic reversing valve of the utility model overcomes the defects of the current secondary oil flushing using bent welding rods to push the recessed manual operation buttons of the valve heads at both ends of the electromagnetic reversing valve, while the bent welding rods are easily deformed and lack elasticity, and there is a risk of oil blockage, and the utility model has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0028] Figure 1 It is a front view of the manual reversing device of the electromagnetic reversing valve of the utility model;

[0029] Figure 2 for Figure 1 Schematic diagram from the perspective of A;

[0030] Among them, 1- electromagnetic reversing valve, 2- electromagnetic reversing valve manual operation button, 3- semi-annular clamp I, 4- semi-annular clamp II, 5- clamp fixing bolt, 6- function frame, 7- function frame fixing bolt, 8- clamping bolt, 9- clamp fixing nut. DETAILED DESCRIPTION

[0031] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0032] Example 1

[0033] A manual reversing device for an electromagnetic reversing valve, such as Figure 1 and 2 As shown, it includes a fixed clamp, a functional frame 6 and a clamping bolt 8;

[0034] The fixing hoop is in a circular shape as a whole and is fixed on the electromagnetic reversing valve 1. It includes a semi-annular hoop I 3 and a semi-annular hoop II 4 which are symmetrically arranged and have the same size. Both ends of the semi-annular hoop I 3 are provided with extended fixing plates and a through hole I is opened on the extended fixing plate. The screw end of the hoop fixing bolt 5 penetrates through the through hole I on the semi-annular hoop I 3 and the through hole I on the semi-annular hoop II 4 and is threadedly connected with the hoop fixing nut 9 to fix the semi-annular hoop I 3 and the semi-annular hoop II 4. The middle parts of the semi-annular hoop I 3 and the semi-annular hoop II 4 are provided with a screw hole I matching the functional frame fixing bolt 5;

[0035] The function frame 6 is U-shaped as a whole, including two ends parallel to each other and a connecting part connecting the two ends. The end is fixedly connected to the fixing clamp through the function frame fixing bolt 7 (a through hole II matching the screw hole I is opened on the end, and the screw end of the function frame fixing bolt 7 penetrates through the through hole II and is threadedly connected with the screw hole I), and a clamping bolt 8 matching the position of the manual operation button 2 of the electromagnetic reversing valve is threadedly connected on the connecting part (a screw hole II matching the clamping bolt 8 is opened in the middle of the connecting part, and the screw end of the clamping bolt 8 penetrates into the screw hole II from the side of the connecting part away from the end and the clamping bolt 8 is threadedly connected to the screw hole II).

[0036] The installation and use steps of the manual reversing device of the solenoid reversing valve are as follows:

[0037] Step 1: Fix the fixing clamp to the lock nut of the reversing valve with the clamp fixing bolt;

[0038] Step 2: Connect the functional frame and the fixed clamp with the functional frame fixing bolts;

[0039] Step 3: Install the clamping bolt on the functional frame, rotate the clamping bolt to achieve manual override operation, so that the oil path is unblocked for secondary oil flushing operation;

[0040] Step 4: When reverse flushing, remove this device and install it on the other side, and follow the above steps to make the oil circuit unobstructed and meet the reverse oil flushing operation conditions.

[0041] It has been verified that the manual reversing device of the electromagnetic reversing valve of the utility model has a reasonable structural design, with a fixed clamp as the electromagnetic reversing valve fixing part, and the functional frame is fixed on the fixed clamp as the mounting frame of the clamping bolt, and the overall structural stability and reliability are good; the manual operation button of the electromagnetic reversing valve can be tightened or loosened by rotating the clamping bolt to complete the manual reversing of the manual operation button of the electromagnetic reversing valve, and the operation is convenient; the clamping state can be maintained after the adjustment is completed, and the button state can be effectively fixed to avoid affecting the secondary oil flushing of the hydraulic system due to the sudden change of the state of the electromagnetic reversing valve button (which may cause equipment damage); it overcomes the current secondary oil flushing that uses bent welding rods to push the manual operation buttons with recessed valve heads at both ends of the electromagnetic reversing valve, and the bent welding rods are easy to deform and lack elasticity, and there is a risk of oil blockage, and the application prospect is good.

[0042] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0043] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A manual reversing device for an electromagnetic reversing valve, characterized in that: Including fixed clamp, functional frame and clamping bolt; The fixed clamp is annular in shape as a whole and is fixed on the electromagnetic reversing valve; The functional frame is U-shaped as a whole, including two ends parallel to each other and a connecting part connecting the two ends. The ends are fixedly connected to the fixing clamps through the functional frame fixing bolts. The connecting part is threadedly connected with a clamping bolt that matches the position of the manual operation button of the electromagnetic reversing valve.

2. A manual reversing device for an electromagnetic reversing valve according to claim 1, characterized in that: The fixed hoop is a circular ring structure.

3. A manual reversing device for an electromagnetic reversing valve according to claim 2, characterized in that: The fixed hoop comprises a semi-annular hoop I and a semi-annular hoop II which are symmetrically arranged and have the same size; Both ends of the semi-annular clamp I are provided with extended fixing plates and the extended fixing plates are provided with through holes I; The screw end of the clamp fixing bolt penetrates through hole I on the semi-annular clamp I and through hole I on the semi-annular clamp II and is threadedly connected with the clamp fixing nut to fix the semi-annular clamp I and the semi-annular clamp II.

4. A manual reversing device for an electromagnetic reversing valve according to claim 3, characterized in that: The middle parts of the semi-annular hoop I and the semi-annular hoop II are provided with screw holes I matching with the fixing bolts of the functional frame; The end portion is provided with a through hole II matching the screw hole I; The screw rod end of the functional frame fixing bolt penetrates through hole II and is threadedly connected with screw hole I.

5. The manual reversing device for electromagnetic reversing valve according to claim 1, characterized in that: The middle of the connecting portion is provided with a screw hole II matching the clamping bolt; The screw end of the clamping bolt penetrates into the screw hole II from the connecting portion away from the end side, and the clamping bolt is threadedly connected with the screw hole II.

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