Manual operation reversing device of electromagnetic reversing valve

Abstract

The utility model discloses a manual operation reversing device of an electromagnetic reversing valve. The manual operation reversing device comprises a plurality of threaded lead screws which are circumferentially arranged around the axis of the electromagnetic reversing valve. A fixing plate I and a fixing plate II which are arranged on the threaded lead screw in a sleeving mode are installed at the two ends of the electromagnetic reversing valve respectively, and the fixing plates are fixed to the electromagnetic reversing valve through fixing plate limiting bolts. A movable plate I and a movable plate II which are arranged on the threaded lead screw in a sleeving mode are further installed at the two ends of the electromagnetic reversing valve respectively, the movable plate I and the movable plate II are located on the sides, away from the electromagnetic reversing valve, of the fixed plate I and the fixed plate II respectively, and the movable plates are fixed to the threaded lead screw through movable plate limiting bolts. The center of the movable plate I and the center of the movable plate II are in threaded connection with a compression bolt I and a compression bolt II which are matched with the positions of the manual operation buttons on the two sides. The manual operation reversing device of the electromagnetic reversing valve is reasonable in structural design and good in stability, manual operation reversing is carried out on the electromagnetic reversing valve by rotating the compression bolt, and the state of the electromagnetic reversing valve can be kept.

Description

Technical Field

[0001] The utility model relates to the technical field of manual control of electromagnetic directional valves, and relates to a manual operation reversing device for electromagnetic directional valves, in particular to an electromagnetic directional valve manual operation reversing device that can solve the problem that it is inconvenient to manually reverse the existing electromagnetic directional valve during the installation process of hydraulic equipment to make its oil circuit unblocked. Background Art

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

[0003] During the installation process of the hydraulic system equipment, the hydraulic system needs to carry out secondary oil flushing operation, which is to flush with a formal hydraulic station and working oil. The purpose is to flush away the impurities generated during the reinstallation of the valve platform and the pipeline connection, and filter the hydraulic oil to the required clarity level. However, during the secondary oil flushing process of the hydraulic system, usually the electricity is not put into work, so the electromagnetic directional valve needs to be manually reversed. At present, the conventional electromagnetic directional valve mainly completes this operation by pushing the manual operation button recessed at both ends of the electromagnetic directional valve. Pushing this button requires the help of auxiliary tools. When manual reversing operation is required, on-site operations generally use self-made tools such as bending electrodes by welding. However, this kind of self-made tool has the defects of easy deformation and poor stability, which brings certain uncertainty to the operation, and at the same time it cannot continuously and stably maintain the state of the button.

[0004] Therefore, it is of great practical significance to develop an electromagnetic directional valve manual operation reversing device with good structural stability and capable of effectively fixing the button state. Summary of the Utility Model

[0005] Due to the above-mentioned defects in the prior art, the utility model provides an electromagnetic directional valve manual operation reversing device with good structural stability and capable of effectively fixing the button state, so as to solve the problems that the self-made tool bent by welding electrodes for manual operation of the existing electromagnetic directional valve has poor stability and cannot continuously and stably maintain the state of the button.

[0006] To achieve the above object, the present utility model provides the following technical solutions:

[0007] A manual operation commutation device for an electromagnetic directional valve, comprising a plurality of threaded lead screws arranged circumferentially around the axis of the electromagnetic directional valve and arranged along the axis direction of the electromagnetic directional valve;

[0008] Both ends of the electromagnetic directional valve are respectively provided with a fixing plate I and a fixing plate II. The fixing plate I and the fixing plate II are sleeved on the threaded lead screws and are respectively fixed on the electromagnetic directional valve by a fixing plate I limit bolt and a fixing plate II limit bolt;

[0009] Both ends of the electromagnetic directional valve are also respectively provided with a movable plate I and a movable plate II sleeved on the threaded lead screws. The movable plate I is located on the side of the fixing plate I away from the electromagnetic directional valve, and the movable plate II is located on the side of the fixing plate II away from the electromagnetic directional valve. The movable plate I and the movable plate II are respectively fixed on the threaded lead screws by a movable plate I limit bolt and a movable plate II limit bolt. A pressing bolt I and a pressing bolt II are threadedly connected to the centers of the movable plate I and the movable plate II. The positions of the pressing bolt I and the pressing bolt II match the positions of the manual operation buttons of the electromagnetic directional valve.

[0010] The manual operation commutation device for the electromagnetic directional valve of the present utility model has a reasonable structural design. Using the threaded lead screw as the connecting member of the two-side components, it is fixed to the electromagnetic directional valve through the fixing plate I and the fixing plate II. Using the movable plate I and the movable plate II as the adjustment substrates for the pressing bolt I and the pressing bolt II, the overall structure has good stability. By rotating the pressing bolt I and / or the pressing bolt II, the manual operation commutation of the electromagnetic directional valve can be achieved, and the states of the pressing bolt I and the pressing bolt II can be maintained after the adjustment, which can effectively fix the button state and avoid affecting the secondary oil flushing of the hydraulic system (which may cause equipment damage) due to the sudden change of the button state of the electromagnetic directional valve, and has good application prospects.

[0011] As a preferred technical solution:

[0012] For the manual operation commutation device for an electromagnetic directional valve as described above, the centers of the fixing plate I and the fixing plate II are respectively provided with a fixing plate I central through hole and a fixing plate II central through hole that match the electromagnetic directional valve;

[0013] The peripheries of the fixing plate I and the fixing plate II are also respectively provided with a fixing plate I lead screw through hole and a fixing plate II lead screw through hole that match the threaded lead screws. The threaded lead screws pass through the fixing plate I lead screw through hole and the fixing plate II lead screw through hole. The positions of the fixing plates can be adjusted according to needs to adapt to the needs of electromagnetic directional valves of different specifications.

[0014] A manual operation commutation device of an electromagnetic commutation valve as described above. Around the movable plate I and the movable plate II, there are respectively formed a through hole for the screw rod of the movable plate I and a through hole for the screw rod of the movable plate II that match the threaded screw rod, and the threaded screw rod passes through the through hole for the screw rod of the movable plate I and the through hole for the screw rod of the movable plate II.

[0015] A manual operation commutation device of an electromagnetic commutation valve as described above. In the centers of the movable plate I and the movable plate II, there are respectively formed a threaded hole for the pressing bolt I of the movable plate I that matches the pressing bolt I and a threaded hole for the pressing bolt II of the movable plate II that matches the pressing bolt II.

[0016] A manual operation commutation device of an electromagnetic commutation valve as described above. There are a total of four threaded screw rods;

[0017] The fixed plate I, the fixed plate II, the movable plate I, and the movable plate II are all in the structure of square plates. Those skilled in the art can select the number of threaded screw rods and the shapes and sizes of the fixed plates / movable plates according to needs.

[0018] A manual operation commutation device of an electromagnetic commutation valve as described above. On one threaded screw rod, there is one limit bolt for the fixed plate I and one limit bolt for the fixed plate II;

[0019] And the limit bolt for the fixed plate I is located on the side of the fixed plate I away from the electromagnetic commutation valve (the other side of the fixed plate I is in contact with the electromagnetic commutation valve), and the limit bolt for the fixed plate II is located on the side of the fixed plate II away from the electromagnetic commutation valve (the other side of the fixed plate II is in contact with the electromagnetic commutation valve).

[0020] A manual operation commutation device of an electromagnetic commutation valve as described above. On one threaded screw rod, there are two limit bolts for the movable plate I and two limit bolts for the movable plate II;

[0021] The two limit bolts for the movable plate I are respectively located on both sides of the movable plate I;

[0022] The two limit bolts for the movable plate II are respectively located on both sides of the movable plate II. Through the two limit bolts for the movable plate, the movable plate can be fixed to a specified position according to needs to adapt to the needs of electromagnetic commutation valves of different specifications.

[0023] The above technical solutions are only one 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.

[0024] The above-mentioned utility model has the following advantages or beneficial effects:

[0025] (1) The manual operation reversing device of the electromagnetic reversing valve of the present utility model has a reasonable structural design. The threaded screw rod is used as the connecting piece for the two side components and is fixed to the electromagnetic reversing valve through fixing plate I and fixing plate II. The movable plate I and movable plate II are used as the adjustment substrates for the pressing bolts I and II, and the overall structure has good stability;

[0026] (2) The manual operation reversing device of the electromagnetic reversing valve of the present utility model can realize the manual operation and reversing of the electromagnetic reversing valve by rotating the pressing bolt I and / or the pressing bolt II, and the operation is simple;

[0027] (3) The manual operation reversing device of the electromagnetic reversing valve of the present utility model can maintain the states of the pressing bolt I and the pressing bolt II after the adjustment, and can effectively fix the button state, avoiding the influence on the secondary oil flushing of the hydraulic system (which may cause equipment damage) due to the sudden change of the button state of the electromagnetic reversing valve;

[0028] (4) The manual operation reversing device of the electromagnetic reversing valve of the present utility model overcomes the defect of the current manual operation button that uses a bent welding rod to push the valve heads at both ends of the electromagnetic reversing valve to recess during the secondary oil flushing. However, the bent welding rod is prone to deformation and has insufficient elasticity, and there is a risk of oil blockage, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, the present utility model and its features, appearance and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on showing the gist of the present utility model.

[0030] Figure 1 is a three-dimensional schematic diagram of the manual operation reversing device of the electromagnetic reversing valve of the present utility model;

[0031] Figure 2 is the front view of the manual operation reversing device of the electromagnetic reversing valve of the present utility model;

[0032] Figure 3 is the top view of the fixing plate I;

[0033] Figure 4 is the top view of the movable plate I;

[0034] Among them, 1 - electromagnetic reversing valve, 2 - threaded screw rod, 3 - fixing plate I, 4 - fixing plate I limit bolt, 5 - movable plate I, 6 - movable plate I limit bolt, 7 - pressing bolt I, 8 - fixing plate II, 9 - fixing plate II limit bolt, 10 - movable plate II, 11 - movable plate II limit bolt, 12 - pressing bolt II, 13 - fixing plate I central through hole, 14 - fixing plate I screw rod through hole, 15 - movable plate I pressing bolt screw hole, 16 - movable plate I screw rod through hole. Detailed implementation mode

[0035] The following further describes the structure in the present utility model in conjunction with the attached drawings and specific embodiments, but it does not limit the present utility model.

[0036] Embodiment 1

[0037] A manual operation commutation device for an electromagnetic directional valve, as Figures 1 to 4 shown, includes four threaded lead screws 2 arranged circumferentially around the axis of the electromagnetic directional valve 1 and arranged along the axis direction of the electromagnetic directional valve 1;

[0038] Square fixing plates I 3 and square fixing plates II 8 are respectively installed at both ends of the electromagnetic directional valve 1. The fixing plates I 3 and the fixing plates II 8 have the same specification dimensions. The fixing plates I 3 and the fixing plates II 8 are sleeved on the threaded lead screws 2 and are respectively fixed on the electromagnetic directional valve 1 through fixing plate I limit bolts 4 and fixing plate II limit bolts 9. Central through holes 13 of the fixing plate I and central through holes matching the electromagnetic directional valve 1 are respectively opened in the centers of the fixing plates I 3 and the fixing plates II 8. Fixing plate I screw through holes 14 and fixing plate II screw through holes matching the threaded lead screws 2 are respectively opened around the fixing plates I 3 and the fixing plates II 8. The threaded lead screws 2 pass through the fixing plate I screw through holes 14 and the fixing plate II screw through holes. There is one fixing plate I limit bolt 4 and one fixing plate II limit bolt 9 on one threaded lead screw 2, and the fixing plate I limit bolt 4 is located on the side of the fixing plate I 3 away from the electromagnetic directional valve 1, and the fixing plate II limit bolt 9 is located on the side of the fixing plate II 8 away from the electromagnetic directional valve 1;

[0039] On both ends of the electromagnetic directional valve 1, there are also respectively a square movable plate I 5 and a square movable plate II 10 sleeved on the threaded lead screw 2. The specifications and dimensions of the movable plate I 5 and the movable plate II 10 are the same. The movable plate I 5 is located on the side of the fixed plate I 3 away from the electromagnetic directional valve 1, and the movable plate II 10 is located on the side of the fixed plate II 8 away from the electromagnetic directional valve 1. The movable plate I 5 and the movable plate II 10 are respectively fixed on the threaded lead screw 2 by a movable plate I limit bolt 6 and a movable plate II limit bolt 11 (there are also respectively a movable plate I lead screw through hole 16 and a movable plate II lead screw through hole matching the threaded lead screw 2 opened around the movable plate I 5 and the movable plate II 10. The threaded lead screw 2 passes through the movable plate I lead screw through hole 16 and the movable plate II lead screw through hole. There are a total of two movable plate I limit bolts 6 and two movable plate II limit bolts 11 on one threaded lead screw 2. The two movable plate I limit bolts 6 are respectively located on both sides of the movable plate I 5, and the two movable plate II limit bolts 11 are respectively located on both sides of the movable plate II 10), and a pressing bolt I 7 and a pressing bolt II 12 are threadedly connected to the centers of the movable plate I 5 and the movable plate II 10 (there are respectively a movable plate I pressing bolt screw hole 15 matching the pressing bolt I 7 and a movable plate II pressing bolt screw hole matching the pressing bolt II 12 opened at the centers of the movable plate I 5 and the movable plate II 10). The positions of the pressing bolt I 7 and the pressing bolt II 12 match the positions of the manual operation buttons of the electromagnetic directional valve 1.

[0040] It has been verified that the manual operation and commutation device of the electromagnetic directional valve of the present utility model has a reasonable structural design. Using the threaded lead screw as the connecting member of the two-side components, it is fixed to the electromagnetic directional valve through the fixed plate I and the fixed plate II. Using the movable plate I and the movable plate II as the adjustment substrates of the pressing bolt I and the pressing bolt II, the overall structure has good stability; the manual operation and commutation of the electromagnetic directional valve can be realized by rotating the pressing bolt I and / or the pressing bolt II, and the operation is simple; the states of the pressing bolt I and the pressing bolt II can be maintained after the adjustment, which can effectively fix the button state and avoid affecting the secondary oil flushing of the hydraulic system (which may cause equipment damage) due to the sudden change of the button state of the electromagnetic directional valve; it overcomes the defect that in the current secondary oil flushing, a manual operation button that uses a bent welding rod to push the valve heads at both ends of the electromagnetic directional valve to recess is used, and the bent welding rod is prone to deformation and insufficient elasticity, and there is a risk of oil blockage, and has good application prospects.

[0041] Those skilled in the art should understand that those skilled in the art can realize the variation examples in combination with the prior art and the above embodiments, which will not be elaborated here. Such variation examples do not affect the essence of the present utility model and will not be elaborated here.

[0042] The preferred embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and the devices and structures not described in detail therein should be understood to be implemented in a common manner in the art; any person skilled in the art can, without departing from the scope of the technical solution of the present utility model, make many possible changes and modifications to the technical solution of the present utility model by using the methods and technical contents disclosed above, or modify it into equivalent embodiments with equivalent changes, which does not affect the essence of the present utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A manually operated reversing device for an electromagnetic reversing valve, characterized in that: It includes a plurality of threaded screw rods which are arranged around the circumference of the axis of the electromagnetic reversing valve and along the axis direction of the electromagnetic reversing valve; A fixing plate I and a fixing plate II are respectively installed at both ends of the electromagnetic reversing valve, and the fixing plate I and the fixing plate II are sleeved on the threaded screw and fixed to the electromagnetic reversing valve by the fixing plate I limiting bolt and the fixing plate II limiting bolt respectively; The two ends of the electromagnetic reversing valve are also respectively equipped with a movable plate I and a movable plate II mounted on the threaded screw rod. The movable plate I is located on the side of the fixed plate I away from the electromagnetic reversing valve, and the movable plate II is located on the side of the fixed plate II away from the electromagnetic reversing valve. The movable plate I and the movable plate II are respectively fixed to the threaded screw rod by the movable plate I limiting bolt and the movable plate II limiting bolt. The center threads of the movable plate I and the movable plate II are connected with clamping bolts I and clamping bolts II. The positions of the clamping bolts I and clamping bolts II match the positions of the manual operation buttons of the electromagnetic reversing valve.

2. A manually operated reversing device for an electromagnetic reversing valve according to claim 1, characterized in that: The centers of the fixing plate I and the fixing plate II are respectively provided with a fixing plate I central through hole and a fixing plate II central through hole matching the electromagnetic reversing valve; The fixing plate I and the fixing plate II are also respectively provided with a fixing plate I screw rod through hole and a fixing plate II screw rod through hole matching the threaded screw rod, and the threaded screw rod passes through the fixing plate I screw rod through hole and the fixing plate II screw rod through hole.

3. A manually operated reversing device for an electromagnetic reversing valve according to claim 1, characterized in that: The movable plate I and movable plate II are respectively provided with movable plate I screw rod through holes and movable plate II screw rod through holes matching with the threaded screw rods, and the threaded screw rods pass through the movable plate I screw rod through holes and movable plate II screw rod through holes.

4. A manually operated reversing device for an electromagnetic reversing valve according to claim 1, characterized in that: The centers of the movable plate I and the movable plate II are respectively provided with a movable plate I clamping bolt screw hole matching with the clamping bolt I and a movable plate II clamping bolt screw hole matching with the clamping bolt II.

5. A manually operated reversing device for an electromagnetic reversing valve according to claim 1, characterized in that: There are four threaded screw rods in total; The fixed plate I, fixed plate II, movable plate I and movable plate II are all square plate structures.

6. A manually operated reversing device for an electromagnetic reversing valve according to claim 1, characterized in that: There is a fixing plate I limit bolt and a fixing plate II limit bolt on a threaded screw rod; The limiting bolt of the fixing plate I is located on the side of the fixing plate I away from the electromagnetic reversing valve, and the limiting bolt of the fixing plate II is located on the side of the fixing plate II away from the electromagnetic reversing valve.

7. A manually operated reversing device for an electromagnetic reversing valve according to claim 1, characterized in that: There are two movable plate I limit bolts and two movable plate II limit bolts on one threaded screw rod; Two limit bolts of the movable plate 1 are respectively located on both sides of the movable plate 1; Two movable plate II limit bolts are respectively located on both sides of the movable plate II.

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