A hydraulic and pneumatic training teaching platform with adjustable table angle

Abstract

The present invention discloses a hydraulic and pneumatic training teaching platform with an adjustable tabletop angle, which relates to the technical field of design teaching equipment and includes at least one work surface, the work surface including a vertical fixed work surface and a movable work surface hinged on the fixed work surface, at least one support and locking positioning reciprocating mechanism being provided between the fixed work surface and the movable work surface, wherein the support and locking positioning reciprocating mechanism includes a connecting box connected to the fixed work surface, a ratchet and a swinging mechanism pivotally connected in the connecting box, a pawl coaxial with the swinging mechanism, and a lower paddle, an upper paddle and a rocker arm coaxial with the ratchet, the other end of the rocker arm being hinged to the movable work surface, the rocking mechanism having a swing ball channel and a pawl slot, a swing ball being provided in the swing ball channel, and a pawl slide column of the pawl slidingly cooperating with the pawl slot. The movable work surface of the present invention can be opened and closed in multiple gears and can be locked and unlocked autonomously, the opening and closing angle can be adjusted in a wide range, and the adjustment is convenient and simple.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching equipment, and in particular to a hydraulic and pneumatic training teaching platform with an adjustable table angle. Background Art

[0002] Nowadays, pneumatic and hydraulic technologies are widely used by virtually any machinery manufacturer, including those in the medical, construction machinery, aviation, automation, and mold and die industries. Social demand is always the driving force behind technological development. Reducing energy consumption, improving efficiency, adapting to environmental requirements, achieving mechatronics, and achieving high reliability are the eternal goals of hydraulic and pneumatic technology and the key to success in market competition for hydraulic and pneumatic products.

[0003] Hydraulic technology has penetrated into many fields and has been widely applied and developed in civil industry, machine tools, engineering machinery, metallurgical machinery, plastic machinery, agricultural and forestry machinery, automobiles, ships and other industries. It has also developed into a complete automation technology including transmission, control and detection.

[0004] Pneumatics is a specialized technology that uses compressed air as a medium to drive and control machinery. Due to its advantages of energy saving, pollution-free operation, high efficiency, low cost, safety and reliability, and simple structure, it is widely used in various machines and production lines.

[0005] Pneumatic and hydraulic technology is a highly practical professional technical foundation course that is widely used in various technical fields and industries. It is a compulsory course for students majoring in automation, mechatronics, mechanical design and manufacturing, and automation. In order to help students better understand the structure, principles, and basic components of basic hydraulic and pneumatic components, specialized training equipment is usually used in the teaching process to effectively carry out comprehensive, open, and research-based experimental teaching content. However, the work surface of existing training equipment cannot be adjusted at any angle after it is manufactured, which will cause certain inconveniences during use or demonstration. Summary of the Invention

[0006] In view of this, the present invention provides a hydraulic and pneumatic training teaching platform with adjustable table angle to solve the above technical problems.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A hydraulic and pneumatic training teaching platform with adjustable table angle, comprising at least one work surface, wherein the work surface comprises a fixed work surface fixed vertically and a movable work surface hinged on the fixed work surface and capable of swinging up and down, at least one supporting and locking positioning reciprocating mechanism is provided between the fixed work surface and the movable work surface, wherein the supporting and locking positioning reciprocating mechanism comprises a connecting box connected to the fixed work surface, a ratchet and a swinging mechanism pivotally connected in the connecting box, a pawl coaxially connected to the swinging mechanism, and a lower paddle, an upper paddle and a rocker arm coaxially connected to the ratchet, the other end of the rocker arm is hinged to the movable work surface, the rocking mechanism is provided with a rocking ball channel and a pawl slot, a rocking ball is provided in the rocking ball channel, the pawl slide column of the pawl slides in cooperation with the pawl slot, when the movable work surface is lifted or pressed down, the rocking mechanism is driven to swing by the corresponding paddle, thereby causing the rocking ball to roll along the rocking ball channel, and then the gravity of the rocking ball is used to drive the rocking mechanism to drive the pawl to maintain a separation or engagement state with the ratchet.

[0009] Furthermore, the angle between the lower paddle and the upper paddle is adjustable.

[0010] Furthermore, the swing mechanism has two coaxially arranged upper swing blocks and lower swing blocks, the lower paddle drives the upper swing block to swing so that the swing mechanism swings, and the upper paddle drives the lower swing block to swing so that the swing mechanism swings.

[0011] Furthermore, the ball swing channel is a V-shaped channel.

[0012] Furthermore, both ends of the swing mechanism have a swing ball slot connected to the swing ball channel. When the swing mechanism swings into place, the corresponding ball pushing assembly arranged in the connecting box pushes the swing ball through the corresponding swing ball slot so that the swing ball can roll toward the other end of the swing ball channel.

[0013] Furthermore, the ball pushing assembly includes a push column connected to the connection box, a screw passes through a long hole on a push block and is connected to the push column, and the push block has an arc-shaped guide surface that is pressed against the swing ball.

[0014] Furthermore, it also includes a table body, which has a profile column that slides with the fixed work surface, and the profile column is provided with a locking member that acts on the fixed work surface.

[0015] Furthermore, the display screen is connected to the profile column via a display screen universal connection bracket.

[0016] Furthermore, it also includes a console unit, which includes a profile frame, and a detachable functional module panel and a detachable electrical component installation mesh plate are installed on the profile frame.

[0017] Furthermore, the profile skeleton includes two groups of U-shaped profiles with openings facing each other, the two ends of the two groups of U-shaped profiles are connected by corresponding end baffles, and slide grooves are provided on the opposite surfaces of the two groups of U-shaped profiles, and there is a slideway in the U-shaped opening of the U-shaped profile.

[0018] It can be seen from the above technical solution that the advantages of the present invention are: the work surface has a fixed work surface and a movable work surface, the movable work surface can be put down when not in use, saving space, and the movable work surface can be lifted up for use, which increases the installation and use space of the hydraulic components, and the setting of the support and locking positioning reciprocating mechanism enables the movable work surface to be opened and closed in multiple gears and locked and unlocked automatically, the opening and closing angle can be adjusted in a large range, and the adjustment is convenient and simple.

[0019] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 .

[0022] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure at point A.

[0023] Figure 3 Schematic diagram of the three-dimensional structure of the present invention Figure 2 .

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the console unit of the present invention.

[0025] Figure 5 It is a schematic cross-sectional structural diagram of the console unit of the present invention.

[0026] Figure 6 This is a schematic diagram of the structure of the support and locking positioning reciprocating mechanism of the present invention. Figure 1 .

[0027] Figure 7 This is a schematic diagram of the structure of the support and locking positioning reciprocating mechanism of the present invention. Figure 2 .

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the swing mechanism.

[0029] Figure 9 For the present invention Figure 8 Schematic diagram of the structure of the swing ball rolling groove.

[0030] Figure 10 The state diagram of the swing mechanism of the present invention is shown as follows: Figure 1 .

[0031] Figure 11 The state diagram of the swing mechanism of the present invention is shown as follows: Figure 2 .

[0032] Figure 12 Schematic diagram of the state of the support and locking positioning reciprocating mechanism of the present invention Figure 1 .

[0033] Figure 13 Schematic diagram of the state of the support and locking positioning reciprocating mechanism of the present invention Figure 2 .

[0034] Figure 14 Schematic diagram of the state of the support and locking positioning reciprocating mechanism of the present invention Figure 1 .

[0035] Figure 15 Schematic diagram of the state of the support and locking positioning reciprocating mechanism of the present invention Figure 2 .

[0036] List of reference numerals: table body 1, profile column 11, oil pipe hole 12, work surface 2, fixed work surface 21, movable work surface 22, connecting hinge 23, locking member 3, support and locking positioning reciprocating mechanism 4, rocker arm 41, connecting box 42, bearing 43, ratchet 44, pawl 45, pawl slide column 451, swing mechanism 46, swing arm 461, pawl slide groove 4611, first swing ball clamping groove 4612, second swing ball clamping groove 4613, swing ball 462, cover plate 463, Upper swing block 464, lower swing block 465, first push ball assembly 47, second push ball assembly 48, push column 481, push block 482, screw 483, upper paddle 49, lower paddle 410, connecting shaft 411, display screen universal connecting bracket 5, display screen 6, console unit 7, U-shaped profile 71, slide groove 711, slideway 712, end baffle 72, functional module panel 73, electrical component mounting mesh plate 74, support mesh plate 75, connecting profile frame 76, hydraulic oil distributor 8. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] refer to Figures 1 to 15 For further explanation of this application, please refer to Figure 1 、 Figure 2 and Figure 3 The hydraulic and pneumatic training teaching platform with adjustable table angle shown in the figure comprises a movable table body 1 and at least one work table 2, wherein the work table 2 comprises a fixed work table 21 fixed vertically and a movable work table 22 hinged on the fixed work table 21 and capable of swinging up and down, the table body 1 has a profile column 11 that slides with the corresponding fixed work table 21, the profile column 11 is provided with a locking member 3 that acts on the corresponding fixed work table 21 to realize the installation of the work table 2, and at least one is provided between the fixed work table 21 and the movable work table 22. The support and locking positioning reciprocating mechanism 4, by lifting the movable work surface 22, can facilitate the use of the side of the fixed work surface 21 close to the movable work surface 22, thereby increasing the usable space. By installing replaceable hydraulic components and pneumatic components on the fixed work surface 21 and the movable work surface 22, different hydraulic circuits and pneumatic circuits are formed, thereby achieving the goal of providing students with typical circuits and systems with extensive engineering background knowledge through the experimental platform provided by discipline construction and scientific research platform construction, improving students' engineering awareness, and providing a good experimental condition for students' active learning. In conjunction with the teaching content, through component disassembly and assembly experiments, students can understand the structure, principle and basic composition of basic hydraulic and pneumatic components, help students verify the knowledge learned in class, and cultivate students' learning interest, teamwork ability and hands-on ability.

[0039] Specifically, the locking member 3 includes a locking block and a pentagonal knob, the screw of the pentagonal knob passes through the locking block and is threadedly connected to the profile column 11, and the locking block is pressed against the corresponding fixed work table 21. When the locking member 3 is not locking the fixed work table 21, the locking block can be used as a hook, and the two sides of the fixed work table 21 are respectively connected to the corresponding profile column 11, so that the work table 2 can be installed reliably, and the movable work table 22 is connected to the fixed work table 21 through a plurality of connecting hinges 23. A hydraulic oil distributor 8 can also be installed on the profile column 11, and an oil pipe hole 12 can also be provided on the desktop of the table body 1. Two support and locking positioning reciprocating mechanisms 4 are provided between the fixed work table 21 and the movable work table 22.

[0040] like Figure 1 and Figure 3 As shown, the hydraulic and pneumatic training teaching platform with adjustable table angle further includes at least one display screen 6, which is connected to the profile column 11 via a corresponding display screen universal connection bracket 5, so that the use direction and use angle of the display screen 6 can be easily adjusted.

[0041] like Figure 1 、 Figure 3 and Figure 4 As shown, the hydraulic and pneumatic training platform with adjustable table angle also includes a console unit 7, which comprises a profile frame mounted with several detachable functional module panels 73 and several detachable electrical component mounting mesh panels 74. One or more of a power module, a button module, and a touch screen module are mounted on the console unit 7 via corresponding functional module panels 73, while one or more of a PLC module and a servo debugging module are mounted on the console unit 7 via corresponding electrical component mounting mesh panels 74.

[0042] like Figure 5 As shown, the profile skeleton includes two groups of U-shaped profiles 71 with openings facing each other. The two ends of the two groups of U-shaped profiles 71 are connected by corresponding end baffles 72 respectively. Slide grooves 711 are provided on the opposite surfaces of the two groups of U-shaped profiles 71, and a slideway 712 is provided in the U-shaped opening of the U-shaped profile 71.

[0043] Specifically, a group of U-shaped profiles 71 includes several U-shaped profiles 71 connected side by side, and the two groups of U-shaped profiles 71 are arranged opposite to each other and correspond to each other one by one. The functional module panel 73 slides with the upper and lower opposite slide grooves 711, and the supporting mesh plate 75 connected to the electrical component mounting mesh plate 74 slides with the slide 712. When it is necessary to replace the functional module panel 73 or / and the electrical component mounting mesh plate 74, the end baffle 72 at one end is removed, and then the installed functional module panel 73 and electrical component mounting mesh plate 74 can be removed by pulling, which is convenient for replacement. A group of U-shaped profiles 71 has multiple U-shaped profiles 71, which is convenient for multi-layer installation of control modules. The bottom of the profile frame has a connecting profile frame 76 connected to the profile column 11.

[0044] As shown Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 As shown, the support and locking positioning reciprocating mechanism 4 includes a connecting box 42 connected to the corresponding profile column 11, a ratchet 44 and a swing mechanism 46 pivoted in the connecting box 42, a pawl 45 coaxially connected to the swing mechanism 46, and a lower paddle 410, an upper paddle 49 and a rocker arm 41 coaxially connected to the ratchet 44. The rocker mechanism 46 is located on one side of the ratchet 44, and the other end of the rocker arm 41 is hingedly connected to the movable work surface 22. The rocker mechanism 46 has a rocking ball channel and a ratchet slot 4611, and a rocking ball 462 is provided in the rocking ball channel. The ratchet slide column 451 of the ratchet 45 slides with the ratchet slot 4611. The rocking mechanism 46 swings to drive the ratchet 45 to swing. When the movable work surface 22 is lifted or pressed down, The swing mechanism 46 is driven to swing by the corresponding paddle, thereby causing the swing ball 462 to roll along the swing ball channel, and then the gravity of the swing ball 462 is used to drive the swing mechanism 46 to drive the pawl 45 to maintain a separation or engagement state with the ratchet 44. When the pawl 45 is engaged with the ratchet 44, the lifting angle of the movable work surface 22 can be conveniently adjusted and can be automatically locked. By lifting the movable work surface 22 to the extreme position, the swing ball 462 is swung, thereby keeping the pawl 45 separated from the ratchet 44, making it convenient to press the movable work surface 22 down and reset. The support and locking positioning reciprocating mechanism 4 can make the movable work surface 22 open and close in multiple gears and lock and unlock autonomously. The opening and closing angle has a large adjustable range and is convenient and simple to adjust.

[0045] In some embodiments of the present application, Figure 7As shown, the angle between the lower paddle 410 and the upper paddle 49 is adjustable. The effective working angle of the rocker 41 can be adjusted by adjusting the angle between the two paddles.

[0046] Specifically, the connecting shaft 411 is connected to the connecting box 42 through a bearing 43, and the rocker arm 41, the lower paddle 410 and the upper paddle 49 are sequentially sleeved on the connecting shaft 411. The adjusting screw is connected to the connecting shaft 411 and abuts against the upper paddle 49. By loosening the adjusting screw and rotating the lower paddle 410 and the upper paddle 49 to adjust the angle between the lower paddle 410 and the upper paddle 49, the lower paddle 410, the upper paddle 49, the rocker arm 41 and the ratchet 44 swing synchronously.

[0047] like Figure 8 As shown, the swing mechanism 46 has two coaxially arranged and axially offset upper swing blocks 464 and lower swing blocks 465. The lower paddle 410 drives the upper swing block 464 to swing, causing the swing mechanism 46 to swing. The swing ball 462 rolls to the end away from the pawl 45 so that the pawl 45 can be separated from the ratchet 44. The upper paddle 49 drives the lower swing block 465 to swing, causing the swing mechanism 46 to swing. The swing ball 462 rolls to the end close to the pawl 45 so that the pawl 45 is reset and engaged with the ratchet 44.

[0048] Specifically, the swing mechanism 46 also includes a swing arm 461 with a swing ball rolling groove on the side, the swing ball rolling groove is covered with a cover plate 463, and a swing ball channel is formed between the cover plate 463 and the swing ball rolling groove. The upper swing block 464 is arranged between the cover plate 463 and the lower swing block 465 to ensure that when the lower paddle 410 contacts the upper swing block 464, the upper paddle 49 is separated from the lower swing block 465, and when the upper paddle 49 abuts against the lower swing block 465, the lower paddle 410 is separated from the upper swing block 464.

[0049] Preferably in the present application, the swing arm 461, the cover plate 463, the lower swing stopper 465 and the upper swing stopper 464 can be assembled together in a separable manner.

[0050] like Figure 9 、 Figure 10 and Figure 11 As shown, the swing ball channel is a V-shaped channel, and the opening of the V-shaped channel faces the ratchet 44, making the support and locking positioning reciprocating mechanism 4 more compact.

[0051] Preferably, in the present application, when the V-shaped channel is at the extreme position, one channel can be in a horizontal state.

[0052] In some embodiments of the present application, both ends of the swing mechanism 46 have swing ball slots connected to the swing ball channel. When the swing mechanism 46 swings into place, the corresponding ball pushing assembly arranged in the connecting box 42 pushes the swing ball 462 through the corresponding swing ball slot so that the swing ball 462 can roll toward the other end of the swing ball channel.

[0053] Specifically, the two swing ball slots are respectively the first swing ball slot 4612 and the second swing ball slot 4613, and the two ball pushing assemblies are respectively the first ball pushing assembly 47 and the second ball pushing assembly 48. The setting of the swing ball slots facilitates the corresponding ball pushing assemblies to enter the swing ball channel for use in pushing balls.

[0054] In some embodiments of the present application, the ball-pushing assembly includes a push post 481 connected to the connection box 42, a screw 483 extending through an elongated hole in a push block 482 and connected to the push post 481, and the push block 482 includes an arcuate guide surface that presses against the swing ball 462. The ball-pushing position and angle of the push block 482 can be adjusted by rotating the push block 482 and moving it along the elongated hole.

[0055] like Figure 12 、 Figure 13 、 Figure 14 and Figure 15 As shown in the working principle state diagram, the working principle is:

[0056] like Figure 12 and Figure 15 As shown, the movable work surface 22 is in a downward reset state, and the upper paddle 49 acts on the lower swing stopper 465 to swing the swing mechanism 46 to the first limit position. When the swing mechanism 46 swings to the limit position, it drives the pawl 45 to press down, so that the pawl 45 is reset and meshed with the ratchet 44. The corresponding ball pushing assembly is used to provide power to the swing ball 462, and the swing ball 462 is rolled to the end of the swing ball channel close to the pawl 45 (i.e., the first swing ball slot 4612) by relying on the slope of the swing ball channel. The gravity of the swing ball 462 is used to prevent the swing mechanism 46 from automatically rotating in the opposite direction, so that the pawl 45 and the ratchet 44 remain in meshing state.

[0057] like Figure 13As shown, when the movable work surface 22 starts to lift up, the upper paddle 49 and the lower paddle 410 are not in contact with the swing mechanism 46. Under the gravity of the swing ball 462, the state of the swing mechanism 46 does not change, that is, the pawl 45 and the ratchet 44 remain in meshing state. Since the pawl 45 is pivotally connected, the pawl 45 does not hinder the rotation of the ratchet 44 when the movable work surface 22 is lifted up, but can prevent the ratchet 44 from rotating in the opposite direction, thereby facilitating the adjustment of the opening and closing angle of the movable work surface 22. The reverse locking of the ratchet 44 by the pawl 45 enables the movable work surface 22 to stably maintain the opening angle.

[0058] like Figure 14 and Figure 15 As shown, when it is necessary to reset the movable work surface 22, the movable work surface 22 is continuously lifted up to approach the limit position. After the movable work surface 22 is lifted up to a certain angle, the lower paddle 410 will come into conflict with the upper swing block 464 to drive the swing mechanism 46 to rotate. When the swing mechanism 46 swings in the opposite direction to the second limit position, the corresponding ball pushing assembly provides power to the swing ball 462 and relies on the slope of the swing ball channel to make the swing ball 462 roll to the end of the swing ball channel away from the pawl 45 (i.e., the second swing ball slot 4613). The swing mechanism 46 swings to the second limit position. At the same time, the pawl 45 will be driven to lift up and separate from the ratchet 44, and the gravity of the swing ball 462 will be used to prevent the swing mechanism 46 from automatically rotating in the opposite direction. At this time, the movable work surface 22 is pressed down, and the upper paddle 49 and the lower paddle 410 are not in contact with the swing mechanism 46. When the movable work surface 22 is pressed down and close to the reset position, the upper paddle 49 acts on the lower swing stopper 465 to swing the swing mechanism 46 to the first limit position again, and the swing ball 462 rolls, and the gravity of the swing ball 462 is used again to keep the pawl 45 engaged with the ratchet 44.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0061] In the description of the present invention, "plurality" means two or more.

[0062] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0063] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0064] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0065] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A hydraulic and pneumatic training teaching platform with adjustable table angle, characterized in that: The invention comprises at least one work surface (2), wherein the work surface (2) comprises a fixed work surface (21) fixed vertically and a movable work surface (22) hinged on the fixed work surface (21) and capable of swinging up and down, and at least one supporting and locking positioning reciprocating mechanism (4) is provided between the fixed work surface (21) and the movable work surface (22), wherein the supporting and locking positioning reciprocating mechanism (4) comprises a connecting box (42) connected to the fixed work surface (21), a ratchet (44) and a swing mechanism (46) pivotally connected in the connecting box (42), a pawl (45) coaxially connected to the swing mechanism (46), and a lower paddle (410) coaxially connected to the ratchet (44). , an upper paddle (49) and a swing rod (41), the other end of the swing rod (41) is hinged to the movable work surface (22), the swing mechanism (46) has a swing ball channel and a pawl slot (4611), a swing ball (462) is provided in the swing ball channel, the pawl slide column (451) of the pawl (45) is slidably matched with the pawl slot (4611), when the movable work surface (22) is lifted up or pressed down, the swing mechanism (46) is driven to swing by the corresponding paddle, thereby causing the swing ball (462) to roll along the swing ball channel, and then the swing mechanism (46) is driven by the gravity of the swing ball (462) to drive the pawl (45) and the ratchet (44) to maintain a separation or engagement state.

2. The hydraulic and pneumatic training teaching platform with adjustable table angle according to claim 1, characterized in that: The included angle between the lower paddle (410) and the upper paddle (49) is adjustable.

3. The hydraulic and pneumatic training teaching platform with adjustable table angle as claimed in claim 1, characterized in that: The swing mechanism (46) has two coaxially arranged upper swing blocks (464) and lower swing blocks (465); the lower paddle (410) drives the upper swing block (464) to swing, causing the swing mechanism (46) to swing; and the upper paddle (49) drives the lower swing block (465) to swing, causing the swing mechanism (46) to swing.

4. The hydraulic and pneumatic training teaching platform with adjustable table angle according to claim 1, characterized in that: The ball swing channel is a V-shaped channel.

5. The hydraulic and pneumatic training teaching platform with adjustable table angle as claimed in claim 4, characterized in that: Both ends of the swing mechanism (46) have swing ball retaining grooves connected to the swing ball channel. When the swing mechanism (46) is swung into position, a corresponding ball pushing assembly arranged in the connection box (42) pushes the swing ball (462) through the corresponding swing ball retaining groove so that the swing ball (462) can roll toward the other end of the swing ball channel.

6. The hydraulic and pneumatic training teaching platform with adjustable table angle as claimed in claim 5, characterized in that: The ball pushing assembly includes a push column (481) connected to the connection box (42), a screw (483) passing through a long hole on a push block (482) and connected to the push column (481), and the push block (482) has an arc-shaped guide surface that presses against the swing ball (462).

7. The hydraulic and pneumatic training teaching platform with adjustable table angle as claimed in claim 1, characterized in that: It also includes a table body (1), wherein the table body (1) has a profile column (11) that is slidably matched with the fixed work surface (21), and the profile column (11) is provided with a locking member (3) that acts on the fixed work surface (21).

8. The hydraulic and pneumatic training teaching platform with adjustable table angle as claimed in claim 7, characterized in that: The display screen (6) is connected to the profile column (11) via a display screen universal connection bracket (5).

9. The hydraulic and pneumatic training teaching platform with adjustable table angle as claimed in claim 1, characterized in that: It also includes a console unit (7), which includes a profile frame, and a detachable functional module panel (73) and a detachable electrical component mounting mesh plate (74) are mounted on the profile frame.

10. The hydraulic and pneumatic training teaching platform with adjustable table angle according to claim 9, characterized in that: The profile skeleton comprises two groups of U-shaped profiles (71) with openings facing each other. The two ends of the two groups of U-shaped profiles (71) are connected via corresponding end baffles (72). Slide grooves (711) are provided on the facing surfaces of the two groups of U-shaped profiles (71). The U-shaped openings of the U-shaped profiles (71) are provided with slideways (712).

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