A hydraulic reversing valve base plate for teaching

Abstract

This utility model relates to the technical field of hydraulic training equipment, specifically a teaching hydraulic directional valve base plate, including a base plate body. The base plate body has external connection holes A, B, T, and P located near the upper left, upper right, lower left, and lower right corners, respectively. The advantages are: it facilitates user connection of oil ports, making identification more intuitive, and provides clear anti-misconnection protection, preventing incorrect connection when using oil ports; it avoids the use of thread-locking adhesive during sealing, reducing hydraulic oil circuit contamination, and allows for quick and easy elastic locking of the outer end of the plug-in sealing plug, facilitating later disassembly, maintenance, and replacement; the nylon protruding set screws allow for easy fixing of the hydraulic directional valve base plate to the teaching equipment mounting plate, preventing movement of the hydraulic directional valve base plate during experiments; and the directional valve name label facilitates user identification of the component.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic training and teaching equipment, specifically a hydraulic directional valve base plate for teaching. Background Technology

[0002] Currently, the hydraulic directional valve base plate used in existing hydraulic training technology has the following technical defects: 1. During user operation, the oil port positions (P, T, A, B) on the hydraulic directional valve base plate are not in a one-to-one correspondence with the oil port positions (P, T, A, B) on the hydraulic schematic diagram of the solenoid directional valve. Users are prone to connecting the oil ports incorrectly or finding the information unclear. Furthermore, although there are text markings, there are no prominent reminders or clear anti-misinstallation markings, making it easy for users to connect the oil ports incorrectly. 2. Adhesive plugs were used in the process hole sealing process of the hydraulic directional valve base plate. There was adhesive pollution during the installation process, which caused pollution to the hydraulic oil circuit later. In addition, the sealing was done by one-time bonding, which was slow and inconvenient for later disassembly, maintenance and replacement. 3. The hydraulic directional valve base plate does not have additional fixing holes for fixing to the teaching equipment mounting plate, making it easy to move during experiments; 4. The hydraulic directional valve base plate does not have the name label of the electromagnetic directional valve, which makes it difficult for users to recognize the component.

[0003] Based on the above problems, this application proposes a hydraulic directional valve base plate for teaching. Utility Model Content

[0004] To overcome the technical deficiencies in the prior art and effectively solve the technical problems in the background art, this utility model provides the following technical solution: A teaching hydraulic directional valve base plate includes a base plate body. The base plate body has external connection holes A, B, T, and P located near its upper left, upper right, lower left, and lower right corners, respectively. The base plate body also has, near its center, four flow channels (A, B, T, and P) on its left, right, upper, and lower sides, respectively, corresponding to the four oil ports A, B, T, and P on the directional valve body. The external connection holes A and B are connected to each other, and the external connection holes B and P are connected to each other. The B-hole flow channels, the T-hole external connection hole and the T-hole flow channel, and the P-hole external connection hole and the P-hole flow channel are respectively connected through the A-hole process auxiliary hole, the B-hole process auxiliary hole, the T-hole process auxiliary hole, and the P-hole process auxiliary hole. The external interfaces of the A-hole external connection hole, the B-hole external connection hole, the T-hole external connection hole, the P-hole external connection hole, the T-hole process auxiliary hole, and the P-hole process auxiliary hole are respectively provided with pluggable sealing plugs. The outer side of each pluggable sealing plug is provided with an elastic locking mechanism. The base plate body and the reversing valve body are respectively provided with positioning mark structures.

[0005] As a preferred technical solution of this utility model, the elastic locking mechanism includes a housing, a first through hole, a groove, a spring, a second through hole, and a slider. The housing is fixed on the outer side of the base plate body at a position corresponding to the pluggable sealing plug. The outer side of the housing has a first through hole through which the pluggable sealing plug can pass. One end of the housing has a groove, and a slider is slidably connected in the groove. A spring is provided between the inner end of the slider and the inner wall of the groove. The outer side of the slider has a second through hole corresponding to the first through hole, through which the pluggable sealing plug can pass.

[0006] As a preferred technical solution of this utility model, the positioning mark structure includes a yellow marking protrusion for port A, a yellow marking protrusion for port B, a blue marking protrusion for port T, a red marking protrusion for port P, a circular positioning hole for port A, a circular positioning hole for port B, a hexagonal positioning hole for port T, a square positioning hole for port P, a positioning plate one, and a positioning plate two. Positioning plate one and positioning plate two are respectively provided on the upper and lower sides of the reversing valve body. A circular positioning hole for port A, a circular positioning hole for port B, a hexagonal positioning hole for port T, and a square positioning hole for port P are respectively provided on the left and right sides of the left and right sides of the upper part of the front side of the base plate body, and the left side of the lower part, respectively, with yellow marking protrusions for port A, yellow marking protrusions for port B, blue marking protrusions for port T, and red marking protrusions for port P that are movably connected to the circular positioning holes for port A, circular positioning holes for port B, hexagonal positioning holes for port T, and square positioning holes for port P.

[0007] As a preferred embodiment of this utility model, the outer side of the base plate body is provided with nylon protruding set screws for fixing to the teaching equipment hanging plate.

[0008] As a preferred technical solution of this utility model, the outer side of the base plate body is provided with a reversing valve name label for identifying the three-position four-way electromagnetic reversing valve.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. The base plate has inclined, slanted holes (or other auxiliary machining methods) on its left, right, top, and bottom sides near the center. These holes correspond one-to-one with the four oil ports (A, B, T, P) on the directional valve body. This facilitates easy connection and provides a more intuitive understanding for users. Furthermore, the circular positioning holes (A, B, T, and P) on positioning plates 1 and 2 correspond to the yellow, yellow, blue, and red markings on the A, B, T, and P ports, respectively, providing clear visual reminders and preventing incorrect connection.

[0010] 2. By adopting a plug-in sealing plug, the use of thread-locking adhesive is avoided during the sealing process of the hydraulic directional valve base plate process hole, reducing hydraulic oil circuit contamination. Furthermore, by pressing the slider and squeezing the spring, the first and second through holes are aligned, facilitating the insertion and removal of the plug-in sealing plug. Releasing the slider and the spring returns to its original position, causing the first and second through holes to be misaligned and squeezed, completing the elastic locking and fixing of the outer end of the plug-in sealing plug. The sealing operation is fast and also facilitates subsequent disassembly, maintenance, and replacement operations. 3. The hydraulic directional valve base plate can be easily fixed to the teaching equipment mounting plate by using the nylon protruding set screws, thereby preventing the hydraulic directional valve base plate from moving during the experiment. 4. The reversing valve is labeled with its name to help users recognize the components. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the combined structure of the base plate body and the reversing valve body of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0014] Figure 4 This is a front view of the interior of this utility model.

[0015] Figure 5This is a schematic diagram of the main body of the reversing valve of this utility model.

[0016] Figure 6 This is a schematic diagram of the elastic locking mechanism of this utility model.

[0017] Figure 7 This is a schematic diagram showing the disassembled structure of the elastic locking mechanism of this utility model.

[0018] In the diagram: 1. Base plate body; 2. Reversing valve body; 3. External connection hole A; 31. Process auxiliary hole A; 32. Flow channel A; 33. Yellow marking protrusion at A port; 34. Circular positioning hole at A port; 4. External connection hole B; 41. Process auxiliary hole B; 42. Flow channel B; 43. Yellow marking protrusion at B port; 44. Circular positioning hole B; 5. External connection hole T; 51. Process auxiliary hole T; 52. Flow channel T; 53. Blue marking protrusion at T port; 54. T... 54. Hexagonal positioning hole; 6. External connection hole of P-hole; 61. Process auxiliary hole of P-hole; 62. Flow channel of P-hole; 63. Red marking protrusion of P-hole; 64. Square positioning hole of P-hole; 7. Plug-in sealing plug; 8. Elastic locking mechanism; 801. Housing; 802. Through hole one; 803. Slide groove; 804. Through hole two; 805. Slider; 806. Positioning plate one; 9. Positioning plate two; 10. Nylon protruding set screw; 11. Reversing valve name label; 12. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-7This utility model provides a technical solution: a teaching hydraulic directional valve base plate, including a base plate body 1. The base plate body 1 has external connection holes A-hole 3, B-hole 4, T-hole 5, and P-hole 6 located near the upper left, upper right, lower left, and lower right corners, respectively. The base plate body 1 also has inclined flow channels A-hole 32, B-hole 42, T-hole 52, and P-hole 62 located near the center on the left, right, top, and bottom sides, respectively. These flow channels correspond one-to-one with the four oil ports A, B, T, and P on the directional valve body 2. This facilitates user connection of the oil ports and provides a more intuitive understanding. The connections between external connection holes A-hole 3 and A-hole 32, B-hole 4 and B-hole 42, and T-hole 5 and P-hole 6 are also provided. The T-hole flow channel 52 and the P-hole external connection hole 6 are connected to the P-hole flow channel 62 through the A-hole process auxiliary hole 31, B-hole process auxiliary hole 41, T-hole process auxiliary hole 51, and P-hole process auxiliary hole 61, respectively. A pluggable sealing plug 7 is provided at the external interface of the A-hole external connection hole 3, B-hole external connection hole 4, T-hole external connection hole 5, P-hole external connection hole 6, T-hole process auxiliary hole 51, and P-hole process auxiliary hole 61. Specifically, the pluggable sealing plug 7 can be a rubber sealing plug. In use, by employing the pluggable sealing plug 7, the use of thread-locking adhesive is avoided during the sealing process of the hydraulic directional valve base plate process holes, reducing hydraulic oil circuit contamination. An elastic locking mechanism 8 is provided on the outer side of each pluggable sealing plug 7. Positioning marking structures are correspondingly provided between the base plate body 1 and the directional valve body 2.

[0021] Furthermore, such as Figure 6 , 7 As shown, the elastic locking mechanism 8 includes a housing 801, a first through hole 802, a slide groove 803, a spring 804, a second through hole 805, and a slider 806. The housing 801 is welded and fixed to the outer side of the base plate body 1 at the position corresponding to the pluggable sealing plug 7. The outer side of the housing 801 has a first through hole 802 through which the pluggable sealing plug 7 can pass. One end of the housing 801 has a slide groove 803, and the slider 806 is slidably connected in the slide groove 803. The inner end of the slider 806 is flush with the inner wall of the slide groove 803. A spring 804 is provided between the two. The outer side of the slider 806 has a through hole 805 corresponding to the through hole 802, through which the plug-in sealing plug 7 can pass. In use, by pressing the slider 806, the spring 804 is squeezed, so that the through hole 802 and the through hole 805 overlap, which facilitates the insertion and removal of the plug-in sealing plug 7. When the slider 806 is released, the spring 804 returns to its original position, causing the through hole 802 and the through hole 805 to be misaligned and squeezed, thus completing the elastic locking and fixing of the outer end of the plug-in sealing plug 7.

[0022] Furthermore, such as Figure 2 ,4 As shown in Figure 5, the positioning mark structure includes a yellow marking protrusion 33 at port A, a yellow marking protrusion 43 at port B, a blue marking protrusion 53 at port T, a red marking protrusion 63 at port P, a circular positioning hole 34 at port A, a circular positioning hole 44 at port B, a hexagonal positioning hole 54 at port T, a square positioning hole 64 at port P, a positioning plate 1 9, and a positioning plate 2 10. Positioning plate 1 9 and positioning plate 2 10 are welded and fixed to the upper and lower sides of the reversing valve body 2, respectively. A circular positioning hole 34 at port A and a circular positioning hole 44 at port B are opened on the left and right sides of positioning plate 1 9 and positioning plate 2 10, respectively. The upper left and right ends of the front side of the base plate body 1 and the lower left end of the base plate body 1 are welded and fixed with the circular positioning holes 34 at port A and 44 at port B. 44. The T-port hexagonal positioning hole 54 and the P-port square positioning hole 64 correspond to the movable sockets of the A-port yellow marking protrusion 33, B-port yellow marking protrusion 43, T-port blue marking protrusion 53, and P-port red marking protrusion 63. During use, the A-port circular positioning hole 34, B-port circular positioning hole 44, T-port hexagonal positioning hole 54, and P-port square positioning hole 64 on positioning plate one 9 and positioning plate two 10 are respectively socketed with the A-port yellow marking protrusion 33, B-port yellow marking protrusion 43, T-port blue marking protrusion 53, and P-port red marking protrusion 63 in shape, and the different colored markings provide users with a more intuitive impression and serve as a prominent reminder. This also plays a clear role in preventing incorrect installation and avoiding incorrect connection when using the oil port.

[0023] Specifically, the red marking represents the P port oil circuit (because the P port is the high-pressure oil supply port); the blue marking represents the T port oil circuit (because the T port is the low-pressure oil return port); and the yellow marking represents the A and B ports oil circuits (because the A and B ports are the working oil ports). In addition, the selected reminder colors are not limited to red, blue, and yellow.

[0024] Furthermore, such as Figure 1 As shown, the outer side of the base plate 1 is threaded with a nylon convex set screw 11 for fixing to the teaching equipment mounting plate through a fixed threaded hole. In use, the hydraulic reversing valve base plate can be easily fixed to the teaching equipment mounting plate, thereby preventing the hydraulic reversing valve base plate from moving during the experiment.

[0025] Furthermore, such as Figure 2 As shown, the outer side of the base plate body 1 is provided with a reversing valve name label 12 for identifying the three-position four-way solenoid reversing valve. Specifically, the reversing valve name label 12 adopts the name label of "three-position four-way solenoid reversing valve (O-type middle position)" by laser engraving (or other marking equipment or sticky notes), which makes it easy for users to recognize the component when using it.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A base plate for a hydraulic directional valve used in teaching, comprising a base plate body (1), wherein the base plate body (1) is provided with an external connection hole A (3), an external connection hole B (4), an external connection hole T (5), and an external connection hole P (6) at positions near the upper left corner, upper right corner, lower left corner, and lower right corner, respectively, characterized in that: The base plate body (1) has A-hole flow channels (32), B-hole flow channels (42), T-hole flow channels (52), and P-hole flow channels (62) that are inclined towards the center and correspond one-to-one with the four oil ports A, B, T, and P on the reversing valve body (2). The A-hole external connection hole (3) is connected to the A-hole flow channel (32), the B-hole external connection hole (4) is connected to the B-hole flow channel (42), the T-hole external connection hole (5) is connected to the T-hole flow channel (52), and the P-hole external connection hole (6) is connected to the P-hole flow channel (62) through the A-hole. The process auxiliary hole (31), B process auxiliary hole (41), T process auxiliary hole (51), and P process auxiliary hole (61) are connected. The external interfaces of the A external connection hole (3), B external connection hole (4), T external connection hole (5), P external connection hole (6), T process auxiliary hole (51), and P process auxiliary hole (61) are respectively provided with plug-in sealing plugs (7). The outer side of each plug-in sealing plug (7) is provided with an elastic locking mechanism (8). The base plate body (1) and the reversing valve body (2) are respectively provided with positioning mark structures.

2. The hydraulic neutral valve manifold for teaching purposes according to claim 1, characterized in that: The elastic locking mechanism (8) includes a housing (801), a through hole one (802), a slide groove (803), a spring (804), a through hole two (805), and a slider (806). The housing (801) is fixed on the outer side of the base plate body (1) at the position corresponding to the plug-in sealing plug (7). The outer side of the housing (801) is provided with a through hole one (802) through which the plug-in sealing plug (7) can pass. A slide groove (803) is provided at one end of the housing (801). A slider (806) is slidably connected in the slide groove (803). A spring (804) is provided between the inner end of the slider (806) and the inner wall of the slide groove (803). The outer side of the slider (806) is provided with a through hole two (805) corresponding to the through hole one (802) through which the plug-in sealing plug (7) can pass.

3. The teaching hydraulic directional valve base plate according to claim 1, characterized in that: The positioning mark structure includes a yellow marking protrusion (33) for port A, a yellow marking protrusion (43) for port B, a blue marking protrusion (53) for port T, a red marking protrusion (63) for port P, a circular positioning hole (34) for port A, a circular positioning hole (44) for port B, a hexagonal positioning hole (54) for port T, a square positioning hole (64) for port P, a positioning plate one (9), and a positioning plate two (10). The upper and lower sides of the reversing valve body (2) are respectively provided with positioning plate one (9) and positioning plate two (10). The left and right sides of positioning plate one (9) and the left and right sides of positioning plate two (10) are respectively provided with positioning plate one (9) and positioning plate two (10). The two sides are respectively provided with a circular positioning hole (34) with an A-mouth, a circular positioning hole (44) with a B-mouth, a hexagonal positioning hole (54) with a T-mouth, and a square positioning hole (64) with a P-mouth. The upper left and right ends and the lower left end of the front side of the base plate body (1) are respectively provided with yellow marking protrusions (33) with an A-mouth, yellow marking protrusions (43) with a B-mouth, blue marking protrusions (53) with a T-mouth, and red marking protrusions (63) with a P-mouth, which are movably connected to the circular positioning hole (34) with an A-mouth, a circular positioning hole (44) with a B-mouth, a hexagonal positioning hole (54) with a T-mouth, and a square positioning hole (64) with a P-mouth.

4. The hydraulic neutral valve manifold for teaching purposes of claim 1, wherein: The outer side of the base plate body (1) is provided with nylon protruding set screws (11) for fixing to the teaching equipment hanging plate.

5. The hydraulic neutral valve manifold for teaching purposes of claim 1, wherein: The outer side of the base plate body (1) is provided with a valve name label (12) for identifying the three-position four-way solenoid valve.

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