Pressure detection equipment for aviation mechanical part production

Abstract

The invention discloses pressure detection equipment for aviation mechanical part production, and relates to the field of pressure detection, and the pressure detection equipment comprises a driving assembly, a cylinder body, a rod body, a mounting unit and a pressing block which are connected in sequence, one end part of the rod body is elastically inserted into the cylinder body, and the other end part of the rod body and the pressing block synchronously move in the first direction through the mounting unit; the driving end of the driving assembly is connected with the barrel and used for driving the barrel to reciprocate along the rod, and the moving distance of the barrel relative to the driving end is adjustable. When the movable distance is smaller than a first distance, the barrel body is not in contact with the mounting unit all the time; and when the movable distance is larger than or equal to the first distance, the cylinder body intermittently abuts against the mounting unit. According to the invention, the driving assembly drives the cylinder elastically connected with the rod body to reciprocate and cooperates with the pressing block to continuously act on the workpiece, so that the detection cost is reduced while the detection equipment can perform static, dynamic and pulse pressure detection on the workpiece.

Description

Technical Field

[0001] The present invention relates to the field of pressure detection, and in particular to a pressure detection device for producing aviation machinery parts. Background Art

[0002] In the field of mechanical manufacturing, hydraulic systems are widely used to test the pressure performance of components. Traditional hydraulic testing systems typically consist of a hydraulic pump, a pressure head, a test unit, and a control valve. They can meet basic static pressure testing needs, such as verifying the ultimate pressure bearing capacity or sealing of components through constant loading. However, with the increasing complexity of industrial equipment, especially in high-end fields such as aviation, the demand for dynamic alternating pressure (such as fatigue life testing) and high-frequency pulse pressure (such as engine combustion chamber shock simulation) is becoming increasingly urgent.

[0003] Existing traditional hydraulic systems are limited by the response speed of the power unit and the frequency response characteristics of the control valve. When performing dynamic and pulse testing, they must be equipped with high-cost dedicated modules such as servo pump groups, piezoelectric proportional valves and accumulator groups, causing the system modification cost to surge to more than one million yuan, making traditional hydraulic systems too expensive when performing static, dynamic and pulse pressure testing.

[0004] Therefore, a pressure testing device for producing aviation machinery parts is proposed to solve the above-mentioned problem of high testing cost. Summary of the Invention

[0005] The purpose of the present invention is to provide a pressure detection device for the production of aviation machinery parts to solve the above-mentioned problem of high detection costs.

[0006] To achieve this object, the present invention adopts the following technical solutions: A pressure testing device for the production of aviation machinery parts, comprising a driving assembly, a cylinder, a rod, a mounting unit and a pressure block for applying pressure to a workpiece, which are connected in sequence; One end of the rod is elastically inserted into the cylinder, and the other end of the rod moves synchronously with the pressing block in the first direction through the mounting unit; The driving end of the driving assembly is connected to the cylinder and is used to drive the cylinder to reciprocate along the rod, and the movable distance between the cylinder and the driving end is adjustable; When the movable distance is smaller than the first distance, the cylinder is always out of contact with the mounting unit; When the movable interval is greater than or equal to the first interval, the cylinder intermittently abuts against the mounting unit.

[0007] Preferably, one end of the rod body is located at the cylinder body and is connected to the inner wall of the cylinder body through a spring, and the spring expands and contracts inside the cylinder body as the cylinder body moves back and forth.

[0008] Preferably, the driving end of the driving assembly is connected to the cylinder through a connecting unit, and the connecting unit includes a connecting arm, a second rotating shaft, and a rotating sleeve connected in sequence. The connecting arm is connected to the driving end, one end of the second rotating shaft is connected to the outer periphery of the rotating sleeve, and the other end is rotatably connected to the connecting arm, and the rotating sleeve is connected to the cylinder. The cylinder moves circumferentially with the driving end as the axis, and makes the cylinder move back and forth along the rod body, and the cylinder synchronously swings in a fan shape with the second rotating shaft as the axis.

[0009] Preferably, the cylinder is threadedly connected to the rotating sleeve, and the rotation of the cylinder causes it to perform linear motion in the rotating sleeve and adjust the movable spacing.

[0010] Preferably, a placement rack is provided at a position corresponding to the pressing block, and a connecting plate located in the placement rack is provided on the pressing block, and the connecting plate is connected to the mounting unit; The mounting unit includes a mounting block, a first rotating shaft, and a mounting arm connected in sequence, wherein the mounting block is connected to an end of the rod body away from the cylinder body, the mounting arm is connected to the connecting plate, and the mounting arm is rotatably connected to the mounting block via the first rotating shaft, and the mounting block performs circumferential motion with the first rotating shaft as the axis; When the movable distance is smaller than the first distance, the cylinder is always out of contact with the mounting block; When the movable distance is greater than or equal to the first distance, the cylinder intermittently abuts against the mounting block.

[0011] Preferably, a through hole is provided at the position of the placement rack corresponding to the pressure block for the pressure block to pass through, a sliding groove is provided at the position of the side of the placement rack corresponding to the mounting arm, and the mounting arm is penetrated by the sliding groove. When the cylinder intermittently abuts against the mounting block, the pressure block moves back and forth toward the workpiece and the mounting arm moves back and forth in the sliding groove.

[0012] Preferably, the cylinder comprises a cylinder body and a bottom cover, the spring abuts between the rod body and the bottom cover, and the bottom cover is detachably connected to the cylinder body.

[0013] Preferably, a limiting plate is provided at one end of the rod body located at the barrel, and an assembly groove is provided on a side of the limiting plate opposite to the bottom cover, and the spring is located in the assembly groove.

[0014] Preferably, a detection unit is provided corresponding to the position of the pressure block, and the detection unit includes a detection platform and a movable support plate connected in sequence. The detection platform is used to place the workpiece to be detected, and a pressure sensor is provided on the side of the detection platform facing the workpiece, and the support plate is used to drive the workpiece on the detection platform to abut against the pressure block.

[0015] Preferably, an adjustable placement space is formed between the detection platform and the pressing block, the placement space is used to accommodate the workpiece, and a lifting member is provided on the support plate, and the lifting member is used to drive the support plate to move and adjust the placement space.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a pressure detection device for the production of aviation machinery parts. The drive assembly drives a cylinder elastically connected to the rod body to reciprocate along the rod body, and under the action of an adjustable movable spacing, the cylinder and the mounting unit are always out of contact or in intermittent contact, so that the drive assembly can circulate and buffer the pressure of the pressure block continuously acting on the workpiece or allow the pressure block to intermittently apply pressure to the workpiece during operation, so as to realize dynamic pressure and pulse pressure detection of the workpiece. At the same time, the static pressure detection realized by the continuous action of the pressure block on the workpiece is combined, so that the detection equipment can perform static, dynamic and pulse pressure detection on the workpiece while reducing the detection cost. There is no need to use high-cost supporting devices, which effectively reduces the detection cost. Therefore, the present invention has the advantage of low detection cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and objectives that can be achieved by the present invention.

[0019] Figure 1 Schematic diagram of the overall structure of the detection device of the present invention; Figure 2 It is a front view structural schematic diagram of the detection device of the present invention; Figure 3 It is a left-side structural schematic diagram of the placement rack in the present invention; Figure 4 It is a right side structural schematic diagram of the placement rack in the present invention; Figure 5 It is a rear structural schematic diagram of the placement rack in the present invention; Figure 6 This is a structural schematic diagram of the cylinder in the present invention being located at the first position; Figure 7 This is a schematic structural diagram of the cylinder in the present invention being located at the second position; Figure 8This is a schematic structural diagram of the cylinder in the present invention being located at the third position; Figure 9 This is a schematic structural diagram of the cylinder in the present invention being located at the fourth position; Figure 10 This is a schematic diagram of the connection structure between the rotating sleeve and the cylinder in the present invention; Figure 11 Schematic diagram of the split structure of the barrel and the bottom cover in the present invention; Figure 12 It is a front view structural schematic diagram of the detection platform in the present invention.

[0020] Illustrations: 1. Pressing block; 11. Placement rack; 111. Perforation; 112. Slide groove; 12. Connecting plate; 2. Cylinder; 21. First position; 22. Second position; 23. Third position; 24. Fourth position; 25. Threaded groove; 26. Cylinder body; 27. Bottom cover; 3. Mounting unit; 31. Mounting block; 32. First rotating shaft; 33. Mounting arm; 4. Connecting unit; 41. Connecting arm; 42. Second rotating shaft; 43. Rotating sleeve; 44. External thread; 5. Detection unit; 51. Detection table; 52. Pressure sensor; 53. Support plate; 6. Rod; 7. Drive assembly; 8. Spring. DETAILED DESCRIPTION

[0021] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below 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 work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally located component.

[0023] Example 1: See also Figures 1-9 , a pressure detection device for the production of aviation machinery parts in this embodiment includes a driving assembly 7, a cylinder 2, a rod 6, a mounting unit 3 and a pressure block 1 for applying pressure to a workpiece, which are connected in sequence; One end of the rod body 6 is elastically inserted into the cylinder body 2, and the other end of the rod body 6 moves synchronously with the pressing block 1 in the first direction through the mounting unit 3; The driving end of the driving assembly 7 is connected to the cylinder 2 and is used to drive the cylinder 2 to reciprocate along the rod 6, and the movable distance between the cylinder 2 and the driving end is adjustable; When the movable distance is smaller than the first distance, the cylinder 2 is always out of contact with the mounting unit 3; When the movable interval is greater than or equal to the first interval, the cylinder 2 intermittently abuts against the mounting unit 3 .

[0024] It should be noted that the pressure block 1 is pressed on the workpiece on the detection equipment, and the gravity of the pressure block 1 continuously acts on the workpiece to realize static pressure detection of the workpiece. At the same time, the driving component 7 drives the cylinder 2 to intermittently abut or not abut with the mounting unit 3, thereby realizing dynamic pressure detection and pulse pressure detection of the workpiece.

[0025] When in use, after placing the workpiece, let the pressing block 1 act on the workpiece, and then use the detection equipment to detect the static pressure on the workpiece, such as Figure 6 As shown, subsequently, when performing dynamic pressure testing, the movable spacing of the cylinder 2 is made smaller than the first spacing, and the cylinder 2 is reciprocated on the rod 6 by the operating drive assembly 7, and the cylinder 2 is not in contact with the mounting unit 3 during the reciprocating motion, as shown in FIG. Figure 6-Figure 7 As shown, at this time, during the reciprocating motion of the cylinder 2, it can exert a constantly changing elastic force on the mounting unit 3 through the elastic connection with the rod 6 during the motion. When the elastic force acts on the pressure block 1 through the mounting unit 3, it will offset the force of the pressure block 1 on the workpiece. As the cylinder 2 reciprocates, the force of the pressure block 1 on the workpiece continuously changes during the reciprocating motion of the cylinder 2 through the constantly changing elastic force, thereby realizing dynamic pressure detection; when performing pulse pressure detection, the active spacing of the cylinder 2 is made greater than or equal to the first spacing, as shown in FIG. Figure 8-Figure 9 As shown, at this time, the cylinder 2 will displace the mounting unit 3 along the first direction during the reciprocating motion, and the mounting unit 3 will drive the pressure block 1 to move synchronously, so that the pressure block 1 is separated from the workpiece, and then the mounting unit 3 will drive the pressure block 1 to move toward the workpiece, so that the pressure block 1 acts on the workpiece. As the cylinder 2 intermittently contacts the mounting unit 3, the pressure block 1 intermittently acts on the workpiece, thereby realizing pulse pressure detection.

[0026] It should be emphasized that the cylinder 2 forms a first position 21, a third position 23, a second position 22 and a fourth position 24 in sequence along the first direction corresponding to its axis. When the cylinder 2 makes a reciprocating motion on the rod 6, the cylinder 2 switches between the first position 21 and the second or between the third position 23 and the fourth position 24. When the cylinder 2 switches between the first position 21 and the second position 22, the circulating buffer pressure block 1 continuously exerts pressure on the workpiece, such as Figure 6-Figure 7 When the cylinder 2 switches between the third position 23 and the fourth position 24, the pressure block 1 is reciprocated toward the workpiece, intermittently applying pressure to the workpiece, as shown. Figure 8-Figure 9 shown.

[0027] It should also be noted that the first spacing is the distance between the first position 21 and the driving end of the drive assembly 7. When the movable spacing of the cylinder 2 is adjusted, the cylinder 2 switches from the first position 21 to the third position 23; when the cylinder 2 switches from the first position 21 to the second position 22, the cylinder 2 is never in contact with the mounting unit 3, and when the cylinder 2 switches from the third position 23 to the fourth position 24, the cylinder 2 intermittently contacts the mounting unit 3.

[0028] It can be understood that the first direction is the opposite direction of the pressing block 1 toward the workpiece; the driving component 7 can be a device that can drive the cylinder 2 to reciprocate along the rod 6, specifically a servo motor.

[0029] It should be emphasized that, in a specific embodiment, the first direction is the vertical direction. When the cylinder 2 is in intermittent contact with the mounting unit 3, the pressure block 1 is displaced along the first direction through the mounting unit 3. The cylinder 2 overcomes the gravity of the pressure block 1 and moves the pressure block 1 in the first direction. When the mounting unit 3 is separated from the cylinder 2, the upward force on the pressure block 1 disappears, and the pressure is pressed on the workpiece through the gravity of the pressure block 1, forming an intermittent action to realize pulse pressure detection. In addition, when performing dynamic pressure detection, the elastic force acting on the pressure block 1 through the mounting unit 3 is not sufficient to overcome its gravity, and the pressure of the pressure block 1 on the workpiece can only be continuously changed.

[0030] It is worth noting that when the cylinder 2 elastically connected to the rod body 6 is driven by the driving component 7 to perform reciprocating motion and adjustable movable spacing along the rod body 6, the detection equipment can perform static, dynamic and pulse pressure detection on the workpiece without using high-cost supporting devices, effectively reducing the detection cost.

[0031] It can be known that the cylinder 2 elastically connected to the rod body 6 is driven by the driving component 7 to reciprocate along the rod body 6, and under the action of the adjustable movable spacing, the cylinder 2 and the mounting unit 3 are always out of contact or in intermittent contact, so that the driving component 7 can circulate the buffer pressure of the pressure block 1 continuously acting on the workpiece or allow the pressure block 1 to intermittently apply pressure to the workpiece during operation, so as to realize dynamic pressure and pulse pressure detection of the workpiece, and at the same time cooperate with the static pressure detection realized by the continuous action of the pressure block 1 on the workpiece, so that the detection equipment can perform static, dynamic and pulse pressure detection on the workpiece while reducing the detection cost.

[0032] Furthermore, one end of the rod 6 located at the cylinder 2 is connected to the inner wall of the cylinder 2 through a spring 8, and the spring 8 expands and contracts inside the cylinder 2 as the cylinder 2 reciprocates.

[0033] It should be noted that when the cylinder 2 switches from the first position 21 to the second position 22, the cylinder 2 switches the spring 8 from the free state to the loaded state; when the cylinder 2 switches from the second position 22 to the third position 23, the cylinder 2 switches the spring 8 from the loaded state to the free state.

[0034] It can be known that when the driving component 7 drives the cylinder 2 to reciprocate along the rod body 6, the cylinder 2 will switch back and forth between the first position 21 and the second position 22, causing the spring 8 to continuously deform, and the elastic force generated by the deformation of the spring 8 changes in real time. When the elastic force of the spring 8 that changes in real time acts on the pressure block 1 through the mounting unit 3, the pressure of the pressure block 1 that continuously acts on the workpiece can be circulated and buffered to realize dynamic pressure detection of the workpiece.

[0035] It should also be noted that, during the reciprocating motion of the cylinder 2, the spring 8 can reduce direct contact and friction between mechanical parts during the motion, and can also effectively absorb and alleviate vibrations during the motion, thereby reducing wear.

[0036] Example 2: The basic content is the same as Example 1, except that: See also Figure 3-Figure 11 In this embodiment, the driving end of the driving assembly 7 is connected to the cylinder 2 through the connecting unit 4. The connecting unit 4 includes a connecting arm 41, a second rotating shaft 42, and a rotating sleeve 43 connected in sequence. The connecting arm 41 is connected to the driving end. One end of the second rotating shaft 42 is connected to the outer periphery of the rotating sleeve 43, and the other end is rotatably connected to the connecting arm 41. The rotating sleeve 43 is connected to the cylinder 2. The cylinder 2 moves circumferentially with the driving end as the axis, and makes the cylinder 2 reciprocate along the rod body 6, and the cylinder 2 synchronously swings in a fan shape with the second rotating shaft 42 as the axis.

[0037] When in use, after the driving component 7 works, the connecting arm 41 is rotated through its driving end. After the connecting arm 41 rotates, the second rotating shaft 42 and the rotating sleeve 43 will cause the cylinder 2 to move circumferentially synchronously, allowing the cylinder 2 to switch between the first position 21 and the second position 22, and the third position 23 and the fourth position 24. In the process of rotation of the cylinder 2, the cylinder 2 will also reciprocate on the rod 6. Under the restriction of the rod 6, the moving cylinder 2 will swing in a fan shape with the second rotating shaft 42 as the axis, and the rod 6 will also swing accordingly.

[0038] Specifically, the cylinder 2 is threadedly connected to the rotating sleeve 43. The rotation of the cylinder 2 causes it to perform linear motion in the rotating sleeve 43 and adjust the movable spacing.

[0039] It should be noted that the cylinder 2 is threadedly connected to the rotating sleeve 43, and the cylinder 2 can perform linear movement in the rotating sleeve 43 by rotating, thereby realizing the adjustment of the movable spacing, that is, the distance of the cylinder 2 relative to the driving end of the driving assembly 7 is adjusted, thereby allowing the cylinder 2 to change from switching between the first position 21 and the second position 22 to switching between the third position 23 and the fourth position 24.

[0040] It can be known that the movable spacing can be adjusted by rotating the cylinder 2 through a threaded connection, making the adjustment process convenient and quick, and the structure for threaded connection between the cylinder 2 and the rotating sleeve 43 is integrated on the cylinder 2 and the rotating sleeve 43, eliminating the need to set up excessive structures, reducing the cost of use, and making the structure more compact.

[0041] More specifically, an external thread 44 is provided in the rotating sleeve 43, and a thread groove 25 is provided on the outer periphery of the cylinder 2 and at a position corresponding to the rotating sleeve 43. The external thread 44 is threadedly connected to the thread groove 25. After the cylinder 2 is rotated, the external thread 44 and the thread groove 25 cooperate to make the cylinder 2 perform linear motion in the rotating sleeve 43 to adjust the movable spacing.

[0042] It should be noted that after the cylinder 2 rotates, the linear movement of the cylinder 2 in the rotating sleeve 43 is realized through the cooperation between the external thread 44 and the thread groove 25, that is, the adjustment of the active spacing, which makes the adjustment process more efficient and more intuitive when feedbacking the spacing of the cylinder 2 relative to the driving end of the driving assembly 7, reducing complexity.

[0043] It should be emphasized that, through the drive assembly 7 and the structure of the connecting unit 4, the rotational motion is converted into linear motion, making the components for realizing the reciprocating motion of the cylinder 2 simpler, reducing the manufacturing cost, and making it more intuitive and stable when adjusting the active spacing. It can accurately control the contact or intermittent contact between the cylinder 2 and the mounting unit 3, thereby realizing accurate detection of static, dynamic and pulse pressure. In addition, this method also reduces the wear between the components and extends the service life. During long-term use, the maintenance cost of each component is relatively low.

[0044] Furthermore, a placement rack 11 is provided at the position corresponding to the pressing block 1, and a connecting plate 12 located inside the placement rack 11 is provided on the pressing block 1, and the connecting plate 12 is connected to the mounting unit 3; It should be noted that when the cylinder 2 switches from the third position 23 to the fourth position 24, because the movable spacing of the cylinder 2 is greater than the first spacing, the cylinder 2 will intermittently contact the mounting unit 3, causing the mounting unit 3 to move in the first direction and then reset. The pressure block 1 connected to the mounting unit 3 through the connecting plate 12 also moves synchronously, and the connecting plate 12 will also move in the placement rack 11. The movement trajectory of the connecting plate 12 is restricted by the placement rack 11 to ensure that the connecting plate 12 can drive the pressure block 1 to act on the workpiece intermittently.

[0045] The mounting unit 3 includes a mounting block 31, a first rotating shaft 32, and a mounting arm 33, which are connected in sequence. The mounting block 31 is connected to the end of the rod body 6 away from the cylinder 2. The mounting arm 33 is connected to the connecting plate 12. The mounting arm 33 is rotatably connected to the mounting block 31 via the first rotating shaft 32. The mounting block 31 performs circumferential motion around the first rotating shaft 32. When the movable distance is smaller than the first distance, the cylinder 2 is always out of contact with the mounting block 31; When the movable spacing is greater than or equal to the first spacing, the cylinder 2 intermittently abuts against the mounting block 31 .

[0046] When the spring 8 is in contact with the mounting block 31, the first spring 32 is released and the first spring 33 is released, so that the spring 8 can move in a direction opposite to the first spring 32. When the spring 8 is in contact with the mounting block 31, the first spring 32 is released and the first spring 33 is released.

[0047] Furthermore, a through hole 111 is provided at the position of the placement rack 11 corresponding to the pressure block 1 for the pressure block 1 to pass through, and a sliding groove 112 is provided at the position of the side of the placement rack 11 corresponding to the mounting arm 33, and the mounting arm 33 passes through the sliding groove 112. When the cylinder 2 intermittently abuts against the mounting block 31, the pressure block 1 moves back and forth toward the workpiece and the mounting arm 33 moves back and forth in the sliding groove 112.

[0048] It should be noted that when the pressure block 1 intermittently contacts the workpiece, the pressure block 1 contacts the workpiece through the through hole 111 on the placement frame 11. At the same time, when the mounting arm 33 moves with the connecting plate 12 and the pressure block 1, the slide groove 112 serves as a moving channel for the mounting arm 33. In addition, the placement frame 11 is set on the detection equipment through the support frame.

[0049] In a specific embodiment, Figure 4-Figure 9 As shown, in this embodiment, a positioning rod is provided in the placement rack 11 along the first direction, the connecting plate 12 is sleeved on the positioning rod, and a counterweight unit placed on the connecting plate 12 is sleeved on the positioning rod.

[0050] It should be noted that when the pressure block 1 is intermittently in contact with the workpiece, the connecting plate 12 will move on the positioning rod while displacing in the placement frame 11. The displacement of the connecting plate 12 can be further limited by the cooperation of the placement frame 11 and the positioning rod, so that the pressure block 1 can act on the pressure block 1 more accurately to improve the detection accuracy.

[0051] It should also be noted that the counterweight unit acts on the connecting plate 12, which can expand the range of the pressure block 1 during pressure testing. At the same time, according to different testing requirements, the counterweight unit can be increased or decreased to meet different testing requirements. When increasing or decreasing, the counterweight unit can be passed through the positioning rod, or the counterweight unit can be removed from the positioning rod through the slide groove 112. In this way, increasing or decreasing the counterweight unit is not only convenient and quick, but also effectively improves efficiency.

[0052] Specifically, the counterweight unit is a plurality of counterweight blocks stacked together, and the counterweight blocks act like weights.

[0053] In another specific embodiment, Figure 6-Figure 9 As shown, the pressure block 1 in this embodiment is detachably connected to the connecting plate 12; it should be noted that by detachably connecting the pressure block 1 to the connecting plate 12, pressure blocks 1 of different shapes can be replaced when different pressure tests are required to meet different testing requirements.

[0054] In another specific embodiment, Figure 10-11 As shown, the barrel 2 in this embodiment includes a barrel body 26 and a bottom cover 27 , the spring 8 abuts between the rod body 6 and the bottom cover 27 , and the bottom cover 27 is detachably connected to the barrel body 26 .

[0055] It should be noted that the bottom cover 27 and the cylinder body 26 are detachably connected to form a split cylinder body 2. The detachable connection between the bottom cover 27 and the cylinder body 26 can facilitate the replacement of the spring 8 in the cylinder body 26, so that the spring 8 can maintain stable elastic force feedback to avoid fatigue and damage of the spring 8 after long-term contraction, resulting in the inability to effectively feedback the elastic force, thereby ensuring that the static pressure test can be carried out normally; in addition, by replacing the spring 8, the spring 8 that can feedback the corresponding elastic force can be used according to different detection requirements, thereby improving the adaptability of the detection.

[0056] Furthermore, in this embodiment, Figure 11 As shown, the end of the cylinder 26 away from the bottom cover 27 and close to its outer circumference is set as an arc surface; it should be noted that when the cylinder 2 contacts the mounting block 31, the arc surface can achieve a more uniform pressure distribution compared to the flat contact end, so as to avoid local stress concentration or uneven pressure, and the arc surface can also reduce the friction during contact when the cylinder 2 and the mounting block 31 are intermittently abutted, so as to reduce mechanical wear. At the same time, the arc surface can also provide a smoother contact effect between the cylinder 2 and the mounting block 31, so as to improve the stability during pulse pressure detection.

[0057] Furthermore, a limiting plate is provided at one end of the rod body 6 located at the barrel 26 , and an assembly groove is provided on the side of the limiting plate opposite to the bottom cover 27 , and the spring 8 is located in the assembly groove.

[0058] It can be known that by restricting the spring 8 in the two assembly grooves on the limiting plate and the bottom cover 27, the spring 8 can be prevented from contacting the inner wall of the cylinder 26 during expansion and contraction, causing wear on the spring 8, thereby increasing the service life of the spring 8 and reducing costs. At the same time, the spring 8 does not contact the inner wall of the cylinder 26 during expansion and contraction, and the elastic force of the spring 8 can act more evenly on the installation block, and then be stably transmitted to the pressure block 1, so that the pressure exerted by the pressure block 1 on the workpiece is more stable and accurate, which helps to improve the accuracy and reliability of pressure detection.

[0059] Example 3: The basic content is the same as Example 1, except that: See also Figure 3-Figure 5 and Figure 12 In this embodiment, a detection unit 5 is provided at the position corresponding to the pressure block 1. The detection unit 5 includes a detection platform 51 and a movable support plate 53 connected in sequence. The detection platform 51 is used to place the workpiece to be detected, and a pressure sensor 52 is provided on the side of the detection platform 51 facing the workpiece. The support plate 53 is used to drive the workpiece on the detection platform 51 to abut against the pressure block 1.

[0060] It should be noted that before inspecting the workpiece, the workpiece is first placed on the inspection table 51, and then the inspection table 51 and the workpiece are driven to move in the first direction, that is, the direction of the pressure block 1, by the movable support plate 53. After the support plate 53 moves the workpiece to contact with the pressure block 1 and allows the pressure block 1 to be displaced along the first direction, the gravity of the pressure block 1 is completely applied to the workpiece, and the inspection work can begin.

[0061] It can be known that the detected pressure data is fed back by the pressure sensor 52. The working principle, feedback mode and how to perform feedback of the pressure sensor 52 are well known to those skilled in the art and will not be described in this embodiment.

[0062] Furthermore, an adjustable placement space is formed between the inspection platform 51 and the pressing block 1, and the placement space is used to accommodate the workpiece. A lifting member is provided on the support plate 53, and the lifting member is used to drive the support plate 53 to move and adjust the placement space.

[0063] It should be noted that the placement space is adjustable by the movable support plate, so that workpieces of different sizes can be placed in the placement space to improve the adaptability of detection; the lifting member is a device that drives the support plate 53 to perform linear motion, such as an electric push rod, which is a device known to technical personnel in this field and will not be described in this embodiment.

[0064] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure detection device for the production of aviation machinery parts, characterized in that: It comprises a driving assembly (7), a cylinder (2), a rod (6), a mounting unit (3), and a pressure block (1) for applying pressure to a workpiece, which are connected in sequence; One end of the rod body (6) is elastically inserted into the cylinder body (2), and the other end of the rod body (6) moves synchronously with the pressing block (1) in a first direction through the mounting unit (3); The driving end of the driving assembly (7) is connected to the cylinder (2) and is used to drive the cylinder (2) to reciprocate along the rod (6), and the movable distance of the cylinder (2) relative to the driving end is adjustable; When the movable spacing is smaller than the first spacing, the cylinder (2) is always out of contact with the mounting unit (3); When the movable spacing is greater than or equal to the first spacing, the cylinder (2) intermittently abuts against the mounting unit (3).

2. The pressure testing equipment for producing aviation machinery parts according to claim 1, characterized in that: The rod (6) is located at one end of the cylinder (2) and is connected to the inner wall of the cylinder (2) via a spring (8), and the spring (8) expands and contracts inside the cylinder (2) as the cylinder (2) moves back and forth.

3. The pressure detection equipment for producing aviation machinery parts according to claim 1, characterized in that: The driving end of the driving assembly (7) is connected to the cylinder (2) through a connecting unit (4). The connecting unit (4) includes a connecting arm (41), a second rotating shaft (42), and a rotating sleeve (43) connected in sequence. The connecting arm (41) is connected to the driving end. One end of the second rotating shaft (42) is connected to the outer periphery of the rotating sleeve (43), and the other end is rotatably connected to the connecting arm (41). The rotating sleeve (43) is connected to the cylinder (2). The cylinder (2) performs circumferential motion with the driving end as the axis, and the cylinder (2) performs reciprocating motion along the rod body (6). The cylinder (2) synchronously performs fan-shaped swing with the second rotating shaft (42) as the axis.

4. The pressure testing equipment for producing aviation machinery parts according to claim 3, characterized in that: The cylinder (2) is threadedly connected in the rotating sleeve (43), and the rotation of the cylinder (2) causes it to perform linear motion in the rotating sleeve (43) and adjust the movable spacing.

5. The pressure testing equipment for producing aviation machinery parts according to claim 1, characterized in that: A placement rack (11) is provided at a position corresponding to the pressing block (1), a connecting plate (12) located inside the placement rack (11) is provided on the pressing block (1), and the connecting plate (12) is connected to the mounting unit (3); The mounting unit (3) comprises a mounting block (31), a first rotating shaft (32) and a mounting arm (33) connected in sequence, the mounting block (31) being connected to an end of the rod body (6) away from the cylinder body (2), the mounting arm (33) being connected to the connecting plate (12), and the mounting arm (33) being rotatably connected to the mounting block (31) via the first rotating shaft (32), and the mounting block (31) performing circumferential motion with the first rotating shaft (32) as an axis. When the movable spacing is smaller than the first spacing, the cylinder (2) is always out of contact with the mounting block (31); When the movable spacing is greater than or equal to the first spacing, the cylinder (2) intermittently abuts against the mounting block (31).

6. The pressure testing equipment for producing aviation machinery parts according to claim 5, characterized in that: The placement rack (11) is provided with a through hole (111) at a position corresponding to the pressure block (1) for the pressure block (1) to pass through, and a slide groove (112) is provided at a position corresponding to the mounting arm (33) on the side of the placement rack (11), and the mounting arm (33) is penetrated by the slide groove (112). When the cylinder (2) intermittently abuts against the mounting block (31), the pressure block (1) reciprocates toward the workpiece and the mounting arm (33) reciprocates in the slide groove (112).

7. The pressure testing equipment for producing aviation machinery parts according to claim 2, characterized in that: The cylinder (2) comprises a cylinder body (26) and a bottom cover (27), the spring (8) abuts between the rod body (6) and the bottom cover (27), and the bottom cover (27) and the cylinder body (26) are detachably connected.

8. The pressure testing equipment for producing aviation machinery parts according to claim 2, characterized in that: A limiting plate is provided at one end of the rod body (6) located at the barrel (26), and an assembly groove is provided on the side of the limiting plate opposite to the bottom cover (27), and the spring (8) is located in the assembly groove.

9. The pressure testing equipment for producing aviation machinery parts according to claim 1, characterized in that: A detection unit (5) is provided at a position corresponding to the pressing block (1), and the detection unit (5) comprises a detection table (51) and a movable support plate (53) connected in sequence. The detection table (51) is used to place a workpiece to be detected, and a pressure sensor (52) is provided on a side of the detection table (51) facing the workpiece. The support plate (53) is used to drive the workpiece on the detection table (51) to abut against the pressing block (1).

10. The pressure testing equipment for producing aviation machinery parts according to claim 9, characterized in that: An adjustable placement space is formed between the detection platform (51) and the pressing block (1), the placement space being used to accommodate a workpiece, and a lifting member is provided on the support plate (53), the lifting member being used to drive the support plate (53) to move and adjust the placement space.

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