A cbs system linkage valve and detection equipment thereof

Abstract

The present application relates to a kind of CBS system linkage valve, including valve body, first valve core includes the first limit block being arranged to the side of seal and the second limit block being arranged to the end of first flow channel, first limit block, second limit block are equipped with damping member between, first limit block is equipped with moving rod towards the side of valve stem, valve stem is equipped with moving groove, moving rod is placed in moving groove to promote the range that can be adjusted between valve stem and first valve core, elastic structure is equipped between moving rod and moving groove, the inner wall of first flow channel is located second limit block side and is equipped with the adjusting member that can be axially adjusted position and is in contact with second limit block, adjusting member axially moves to be able to push first valve core change axial position, adjusting member and second limit block form the abutment state between, the sliding fit of moving rod and moving groove makes first valve core and valve stem form adjustable relationship, satisfy idle stroke adjustment demand.

Description

Technical Field

[0001] This invention relates to the field of linkage valve technology, specifically to a CBS system linkage valve and its testing equipment. Background Technology

[0002] The CBS linkage valve is the core control component of the two-wheeled vehicle linkage braking system, mainly used in entry-level motorcycles and economical electric vehicles. When the rider operates the front or rear brake alone, it automatically distributes braking force to the other wheel according to a preset ratio through a built-in mechanical or hydraulic linkage structure. First, it applies braking force to the rear wheel to shift the vehicle's center of gravity forward and improve the front wheel's grip. Then, it gradually increases the braking output of the front wheel, avoiding vehicle imbalance caused by single-wheel braking. It effectively shortens the braking distance on dry roads and reduces the difficulty for novice drivers to operate the brakes. It adopts a purely mechanical structure design without an electronic control module, and its cost is only one-third of that of the ABS system. It is also easy to maintain.

[0003] The linkage valve has an axial clearance between the valve core shoulder and the edge of the bypass valve hole. This clearance is determined by the fit between the valve core machining dimensions and the position of the oil hole in the valve body. This clearance is also called the valve core's free stroke. The linkage valve only starts working when the valve core shoulder covers the bypass valve hole. Therefore, when the free stroke exceeds the design value, it will cause the valve core movement time to increase, the hydraulic actuator to move slowly, and affect the overall control cycle. When the free stroke is insufficient, it will cause the valve core to stop suddenly when it reaches its position, and the impact load will increase. Therefore, this free stroke distance becomes a major problem affecting the performance of the linkage valve.

[0004] Currently, the idle stroke of interlocking valves on the market is fixed during production because the valve stem and oil hole positions are fixed. As a result, when the idle stroke of the interlocking valve is detected to be too long or too short, the valve can only be recast or scrapped, resulting in high production loss rate and affecting production efficiency. Therefore, there is a need for a valve body that can adjust the idle stroke and a detection device for detecting and adjusting the idle stroke of the valve body. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a linkage valve capable of adjusting the empty stroke and a linkage valve detection device for detecting and adjusting the empty stroke, in order to address the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a CBS system linkage valve, comprising a valve body, wherein a through flow channel is provided at the center of the valve body, and a sealing element is provided at the center of the flow channel to separate the flow channel into a first flow channel and a second flow channel. A slidable valve stem is provided through the center of the sealing element. A first valve core and a second valve core are respectively provided in the first flow channel and the second flow channel, respectively. A bypass valve is provided at the outlet of the first valve core in the valve body. The bypass valve includes a bypass valve hole communicating with the first flow channel. The first valve core includes a valve core positioned towards the sealing element. The system includes a first limiting block and a second limiting block positioned towards the end of the first flow channel. A damping element is provided between the first and second limiting blocks. A moving rod is provided on the side of the first limiting block facing the valve stem. The valve stem has a moving groove. The moving rod is placed in the moving groove to create an adjustable range between the valve stem and the first valve core. An elastic structure is provided between the moving rod and the moving groove. An adjusting element is provided on the inner wall of the first flow channel on the side of the second limiting block, which can be axially adjusted and abuts against the second limiting block. The axial movement of the adjusting element can push the first valve core to change its axial position.

[0007] By adopting the above technical solution, a moving groove is opened on the valve stem, and a moving rod that cooperates with the moving groove is set on the side of the first limiting block facing the valve stem. An elastic structure is set between the moving rod and the moving groove. Under the elastic force of the elastic structure, the first valve core moves away from the bypass valve hole to the initial limit position, so that the initial empty stroke of the first valve core is larger than the normal design value, leaving a margin for subsequent empty stroke adjustment. Then, an adjusting member that can be axially adjusted on the inner wall of the first flow channel abuts against the second limiting block. The adjusting member is pushed from the outside to the inside to change the empty stroke until the empty stroke returns to the normal range, thus realizing the adjustment of the empty stroke. Since the elastic structure continuously provides elastic force to press, the adjusting member and the second limiting block form an abutment state. The sliding cooperation between the moving rod and the moving groove makes the relationship between the first valve core and the valve stem adjustable, which meets the empty stroke adjustment requirements without affecting the sliding performance of the valve stem in the second flow channel, thereby ensuring that the position and reversing function of the second valve core are not affected.

[0008] The aforementioned CBS system linkage valve and its testing equipment can be further configured as follows: the elastic structure includes a limiting platform disposed in the moving groove, the moving rod passes through the limiting platform, an elastic element is sleeved on the outer periphery of the moving rod, one end of the elastic element abuts against the limiting platform and the other end abuts against the first limiting block, a sealing structure is provided between the first limiting block and the valve rod, and the sealing structure covers the elastic element and the outer periphery of the moving rod.

[0009] The above technical solution includes a limiting platform inside the moving groove, a moving rod passing through the limiting platform, and an elastic element sleeved around the outer periphery of the moving rod. One end of the elastic element abuts against the limiting platform, and the other end abuts against the first limiting block, ensuring reliable installation and positioning of the elastic element. The limiting platform limits the compression stroke of the elastic element. A sealing structure is provided between the first limiting block and the valve stem. This sealing structure covers the elastic element and the outer periphery of the moving rod, isolating the elastic element from the oil and preventing high-pressure oil from seeping into the interior of the elastic structure. This ensures the reliability of the elastic element's operation and prevents oil leakage along the gap between the moving rod and the valve stem. In addition, the sealing structure also limits the maximum moving distance between the first limiting block and the valve stem. When the elastic element pushes the first valve core to move away from the bypass valve hole to the limit position, the sealing structure bears the axial force and limits the maximum displacement of the first valve core towards the first flow channel opening, preventing the moving rod from detaching from the shoulder inside the moving groove.

[0010] The aforementioned CBS system linkage valve and its testing device can be further configured as follows: the first flow channel has a first thread on its end side wall; the adjusting member includes an adjusting surface that mates with the first thread; the adjusting surface has an abutting sleeve on the side facing the second abutting block; the second abutting block has an abutting post on the side facing the abutting sleeve; the abutting sleeve is fitted around the abutting post and abuts against the second abutting block; and the adjusting member has a testing hole for easy testing on the side facing the end of the first flow channel.

[0011] Using the above technical solution, the adjusting surface is threaded with the first thread on the end side wall of the first flow channel. Rotating the adjusting component allows it to move forward and backward axially. An adjusting hole is opened on the side of the adjusting component facing the end of the first flow channel. The adjusting device can apply force to rotate through the adjusting hole, which facilitates the adjustment of the empty stroke without disassembling the valve body. The abutting sleeve is fitted on the outer periphery of the abutting post on the side of the second limiting block facing the abutting sleeve, so that the adjusting component and the second limiting block form a sleeve guiding fit. During the axial advancement of the adjusting component, it plays a radial guiding role on the second limiting block, preventing the second limiting block from shifting. At the same time, a detection hole is opened on the surface of the adjusting surface. Since the adjusting surface is a fixed component when not adjusted, the detection hole facilitates the detection device to pass through the detection hole and abut against the valve core to push the valve core for empty stroke detection.

[0012] The aforementioned CBS system linkage valve and its testing equipment can be further configured such that: the sealing structure includes a foldable and retractable bushing, one end of which is sealed and fixedly connected to the valve stem via an upper retaining ring, and the other end is sealed and fixedly connected to the outer periphery of the first abutment block via a lower retaining ring.

[0013] Using the above technical solution, one end of the bushing is sealed and fixedly connected to the valve stem through an upper retaining ring, and the other end is sealed and fixedly connected to the outer periphery of the first limiting block through a lower retaining ring. The bushing expands and contracts synchronously with the axial movement of the first limiting block, and continuously maintains the sealing of the elastic element and the outer periphery of the moving rod throughout the entire adjustment stroke of the first valve core, preventing oil from seeping into the interior of the elastic structure at any adjustment position.

[0014] A CBS system linkage valve testing device includes a frame, an indexing turntable on one side of the frame, a plurality of first placement fixtures on the indexing turntable, and a testing device for detecting valve body flow on one side of the indexing turntable. The device is characterized in that: the frame is provided with empty stroke testing devices for detecting the empty stroke of the valve body in sequence along the extending direction. An empty stroke adjustment device, wherein the adjustment device adjusts the defective products detected by the empty stroke detection device; The no-stroke re-inspection device is used to re-inspect defective valve bodies after adjustment. The empty travel detection device, empty travel adjustment device, and empty travel re-inspection device are connected by a transportation mechanism.

[0015] Using the above technical solution, the frame is equipped with an indexing turntable, which has several first placement fixtures. The valve body rotates with the indexing turntable and passes through each inspection station in sequence, realizing continuous multi-station inspection. The frame is equipped with an empty stroke detection device, an empty stroke adjustment device, and an empty stroke re-inspection device in sequence along the extension direction. The three are connected by a transport mechanism, so that the inspection, adjustment, and re-inspection form an assembly line operation. The valve body is automatically transported between the stations. The empty stroke adjustment device is specifically for adjusting the defective products detected by the empty stroke detection device. Qualified products do not need to go through the adjustment station, reducing unnecessary processes. The re-inspection device has the same structure as the empty stroke detection device, ensuring that the re-inspection standard is consistent with the initial inspection standard. The adjusted valve body is re-confirmed by the re-inspection device to verify the adjustment result.

[0016] The aforementioned CBS system linkage valve testing device can be further configured as follows: the empty stroke testing device includes a second placement fixture disposed on one side of the transport structure for placing the product to be tested. A first testing platform is disposed on one side of the second placement fixture. A first driving cylinder is disposed at the end of the first testing platform. A pushing block that abuts against the product valve core is disposed at the end of the first driving cylinder. The pushing block is disposed of a first detection sensor. The first driving cylinder can drive the first detection sensor to abut against the second abutting block in the first flow channel. The abutting of the first detection sensor against the second abutting block is the initial position of the empty stroke. A second detection sensor is disposed on the side of the first testing platform located on the bypass valve. The second detection sensor is used to detect the position of the bypass valve hole, i.e., the key position of the empty stroke. The first driving cylinder continues to push the first valve core to completely cover the bypass valve hole through the first detection sensor and records the stroke. A control center is disposed on one side of the first testing platform. The pushing distance of the first detection sensor can be uploaded to the control center and transmitted to the empty stroke adjustment device.

[0017] Using the above technical solution, the first detection sensor and the second abutment block abut to determine the initial position of the empty stroke. The second detection sensor determines the position of the bypass valve hole, which is the end position of the empty stroke. The first drive cylinder drives the push block to move the first valve core from the initial position to the end position and records the stroke. This stroke is the actual empty stroke value of the valve body to be tested. The initial position signal detected by the first detection sensor and the end position signal detected by the second detection sensor are both uploaded to the control center. The control center calculates the actual empty stroke based on the difference between the initial position and the end position and transmits the empty stroke data to the empty stroke adjustment device in real time, so that the adjustment device can adjust the specific empty stroke deviation of each valve body.

[0018] The aforementioned CBS system linkage valve detection device can be further configured as follows: the empty stroke adjustment device includes an adjustment platform disposed on one side of the transport mechanism, the surface of the adjustment platform is provided with a third placement clamp, the top of the third placement clamp is provided with a pressing mechanism, one side of the adjustment platform is provided with a first telescopic cylinder capable of extension and retraction, the first telescopic cylinder is provided with a first rotary drive component via a mounting plate, a second telescopic cylinder is fixedly mounted on one side of the first rotary drive component, a gripper mounting plate is fixedly mounted on one side of the second telescopic cylinder, the gripper mounting plate has a first mounting cavity for mounting a movable plate in the center, the end of the second telescopic cylinder passes through the gripper mounting plate and is fixedly connected to the movable plate, the gripper mounting plate has second mounting cavities on both sides for hinged first connecting arms, the other end of the first connecting arm is hinged to a tensioning gripper, a second connecting arm is also hinged between the tensioning gripper and the gripper mounting plate, and the first rotary drive component and the first telescopic cylinder are electrically connected to the control center.

[0019] Using the above technical solution, the surface of the adjustment table is provided with a third placement clamp for positioning the valve body to be adjusted, and a pressing mechanism is provided at the top to press and fix the valve body to prevent displacement of the valve body during adjustment. The first telescopic cylinder drives the mounting plate to extend and retract laterally, and the first rotary drive drives the mounting plate to rotate. The two sides of the clamp mounting plate are hinged with first connecting arms, and the other end of the first connecting arm is provided with a tensioning clamp. A second connecting arm is also hinged between the first connecting arm and the clamp mounting plate. The second telescopic cylinder drives the moving plate to move axially. Through the lever hinge structure of the first connecting arm and the second connecting arm, the tensioning clamp opens or clamps, realizing the clamping and tensioning of the valve body adjustment hole. When the tensioning clamp opens, the clamp abuts against the side wall of the adjustment hole. The first rotary drive drives the clamp to rotate. The friction between the clamp and the adjustment hole drives the adjustment component to rotate. The adjustment component is axially pushed forward through the threaded transmission to change the empty stroke. The first rotary drive and the first telescopic cylinder are both electrically connected to the control center, and can automatically calculate the adjustment amount and execute the adjustment according to the empty stroke data transmitted by the detection device.

[0020] The aforementioned CBS system linkage valve testing device can be further configured as follows: the clamping mechanism includes a second rotary drive component with an adjustment table located on one side of the third placement fixture, the output end of the second rotary drive component is provided with a pressing connecting plate, the top of the pressing connecting plate is provided with a pressing cylinder, the pressing cylinder is located on the top of the third placement fixture, and the bottom of the pressing cylinder is provided with a pressing component for pressing the workpiece.

[0021] Using the above technical solution, the second rotary drive is set on the adjustment table on one side of the third placement fixture. The output end of the second rotary drive is provided with a pressing connecting plate. The top of the pressing connecting plate is provided with a pressing cylinder. The pressing cylinder is set on the top of the third placement fixture. The bottom of the pressing cylinder is provided with a pressing component for pressing the workpiece. The second rotary drive drives the pressing connecting plate to swing above the third placement fixture. The pressing cylinder drives the pressing component to move downward to press the top of the valve body, preventing the valve body from shifting and shaking in the radial and axial directions during the adjustment process.

[0022] The aforementioned CBS system linkage valve testing device can be further configured as follows: a conveying truss is provided between the second and third placement clamps and the transport mechanism. The conveying truss extends along the direction of the second and third placement clamps. The conveying clamp is provided with a reciprocating mechanical gripper between the second and third placement clamps and the transport mechanism. The transport mechanism includes a conveyor belt. A plurality of fourth placement clamps for placing products are distributed on the surface of the conveyor belt. The conveyor belt is provided with a locking device at the second and third placement clamps to lock the fourth placement clamps when the mechanical grippers are in operation.

[0023] Using the above technical solution, a conveying truss is provided between the second and third placement fixtures and the transport mechanism. The conveying truss extends along the arrangement direction of the second and third placement fixtures. The truss is equipped with mechanical grippers that can reciprocate. The mechanical grippers move on the truss to grab or place the valve body, realizing the transition and transfer of the valve body from the fourth placement fixture on the conveyor belt to the second or third placement fixture. Several fourth placement fixtures are distributed on the upper surface of the conveyor belt. The valve body is sequentially transported to each workstation on the conveyor belt through the fourth placement fixtures. The conveyor belt is equipped with locking devices at the corresponding positions of the second and third placement fixtures. When the mechanical grippers need to grab or place the valve body at the fourth placement fixture, the locking devices lock the fourth placement fixture.

[0024] The aforementioned CBS system linkage valve testing device can be further configured as follows: the locking device includes a locking cylinder located at the second and third placement fixtures of the conveyor belt, the locking cylinder is mounted on both sides of the conveyor belt via a mounting bracket, the end of the locking cylinder is provided with a rectangular locking plate, and the fourth placement fixture is provided with locking grooves on both sides facing the rectangular locking plate to abut and fix with the rectangular locking plate.

[0025] Using the above technical solution, locking cylinders are located on both sides of the conveyor belt. The locking cylinders are fixed by mounting brackets, and rectangular locking plates are provided at the ends of the locking cylinders. The fourth placement fixture has locking grooves on both sides facing the rectangular locking plates. When the mechanical gripper needs to grab or place the valve body at the fourth placement fixture, the locking cylinder drives the rectangular locking plate to extend and engage with the locking grooves on both sides of the fourth placement fixture. The abutting cooperation between the rectangular locking plate and the locking groove locks the fourth placement fixture laterally. After locking, a stable relative position is formed between the mechanical gripper and the fourth placement fixture, and the gripper's grabbing and placing actions are accurate and reliable. After the valve body is transferred, the locking cylinder retracts, releasing the lock on the fourth placement fixture, and the conveyor belt resumes normal conveying.

[0026] The beneficial effects of this invention are as follows: By setting a movable groove on the valve stem and a movable rod on the first valve core, along with an elastic structure, the directional valve allows the first valve core to have an adjustable position offset relative to the valve stem in the axial direction. The first valve core is then pushed axially from the outside by a threaded adjusting component, thereby achieving adjustment of the empty stroke. This solves the problem of the fixed and unadjustable empty stroke of existing directional valves. The detection equipment connects the empty stroke detection device, the empty stroke adjustment device, and the empty stroke re-inspection device, realizing automatic detection, empty stroke adjustment, and secondary re-inspection of the empty stroke of the directional valve. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the structure of the present invention; Figure 3 This is an exploded view of the structure of the present invention; Figure 4 This is a structural diagram of the detection device of the present invention; Figure 5 This is an enlarged view of the structure at point A of the present invention; Figure 6 This is a structural diagram of the empty travel detection device of the present invention; Figure 7 This is a diagram of the idle stroke adjustment device of the present invention; Figure 8 This is an enlarged view of the structure at point B of the present invention; Figure 9 This is an enlarged view of the structure at point C in this invention; Label annotations: 1-Valve body, 2-Flow channel, 3-Seal, 4-First flow channel, 5-Second flow channel, 6-Valve stem, 7-First valve core, 8-Second valve core, 9-Bypass valve, 10-Bypass valve hole, 11-First limit block, 12-Second limit block, 13-Damping element, 14-Moving rod, 15-Moving groove, 16-Adjusting element, 17-Limiting platform, 18-Elastic element, 19-First thread, 20-Adjusting surface, 21-Abutting sleeve, 22-Abutting post, 23-Adjusting hole, 24-Detection groove, 25-Bushing, 26-Upper clamping ring, 27-Lower clamping ring, 28-Frame, 29-Indexing turntable, 30-First placement fixture, 31-Detection device, 32-Idle travel detection device, 33- 34-Idle travel adjustment device, 35-Idle travel re-inspection device, 36-Second placement fixture, 37-First detection table, 38-First drive cylinder, 39-Push block, 40-First detection sensor, 41-Second detection sensor, 42-Control center, 43-Adjustment table, 44-Third placement fixture, 45-Clamping mechanism, 46-First telescopic cylinder, 47-First rotary drive component, 48-Second telescopic cylinder, 49-Gripper mounting plate, 50-First mounting cavity, 51-Moving plate, 52-First connecting arm, 53-Second mounting cavity, 54-Tensioning gripper, 55-Second connecting arm, 56-Second rotary drive component, 57-Pressing connecting plate, 58-Pressing cylinder, 59-Pressing component, 60-Conveying truss, 61-Moving mechanical gripper, 62-Conveyor belt, 63-Fourth placement fixture, 64-Locking cylinder, 65-Rectangular locking plate, 66-Locking groove. Detailed Implementation

[0028] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0029] Example 1 Reference Figures 1 to 3This specific embodiment provides a CBS system linkage valve, including a valve body (1), a through flow channel (2) in the center of the valve body (1), a sealing element (3) in the center of the flow channel (2) that divides the flow channel into a first flow channel (4) and a second flow channel (5), a sliding valve stem (6) in the center of the sealing element (3), a first valve core (7) and a second valve core (8) respectively in the first flow channel (4) and the second flow channel (5), and a bypass valve (9) in the valve body (1) at the first valve core (7), the bypass valve (9) including a bypass valve hole (10) communicating with the first flow channel (4).

[0030] The first valve core (7) includes a first limiting block (11) disposed on the side facing the seal (3) and a second limiting block (12) disposed on the end of the first flow channel (4). A damping element (13) is provided between the first limiting block (11) and the second limiting block (12). The first limiting block (11) is provided with a moving rod (14) on the side facing the valve stem (6). The valve stem (6) is provided with a moving groove (15). The moving rod (14) is placed in the moving groove (15). An elastic structure is provided between the moving rod (14) and the moving groove (15).

[0031] The inner wall of the first flow channel (4) is provided with an adjusting member (16) that can adjust the position axially on one side of the second limiting block (12). The adjusting member (16) abuts against the second limiting block (12). The axial movement of the adjusting member (16) can push the first valve core (7) to change its axial position.

[0032] Reference Figure 2 The elastic structure includes a limiting platform (17) disposed in the moving groove (15), a moving rod (14) passing through the limiting platform (17), and an elastic element (18) sleeved on the outer periphery of the moving rod (14). One end of the elastic element (18) abuts against the limiting platform (17), and the other end abuts against the first limiting block (11). In this specific embodiment, the elastic element (18) is a compression spring, which is disposed in the moving groove (15). One end abuts against the end face of the limiting platform (17) near the bypass valve hole (10), and the other end abuts against the end face of the first limiting block (11) facing the bypass valve hole (10).

[0033] The limiting platform (17) is set on the inner wall of the moving groove (15) to limit the compression stroke of the elastic element (18) and prevent the elastic element (18) from shifting or being over-compressed and failing during the compression process.

[0034] Reference Figure 2 A sealing structure is provided between the first limiting block (11) and the valve stem (6). The sealing structure covers the outer periphery of the elastic element (18) and the moving rod (14), isolating the elastic element (18) from the oil and preventing high-pressure oil from seeping into the interior of the elastic structure.

[0035] In this specific embodiment, the sealing structure includes a foldable and retractable bushing (25). One end of the bushing (25) is sealed and fixedly connected to the valve stem (6) through an upper retaining ring (26), and the other end is sealed and fixedly connected to the outer periphery of the first limiting block (11) through a lower retaining ring (27). The bushing (25) retracts and expands synchronously with the axial movement of the first limiting block (11), and continuously maintains the covering and sealing of the elastic element (18) and the outer periphery of the moving rod (14) throughout the entire adjustment stroke range of the first valve core (7).

[0036] Furthermore, the sealing structure also serves as a limit for the farthest movement distance between the first limiting block (11) and the valve stem (6). When the elastic element (18) pushes the first valve core (7) to move away from the bypass valve hole (10) to the limit position, the bushing (25) extends to the maximum extent and bears the axial force, limiting the maximum displacement of the first valve core (7) in the direction of the first flow channel (4) and preventing the moving rod (14) from coming off the shoulder from the moving groove (15).

[0037] Reference Figure 2 and Figure 3 The first flow channel (4) is provided with a first thread (19) on the end side wall, and the adjusting member (16) includes an adjusting surface (20) that mates with the first thread (19). The adjusting surface (20) is provided with an abutting sleeve (21) on the side facing the second limiting block (12), and the second limiting block (12) is provided with an abutting post (22) on the side facing the abutting sleeve (21). The abutting sleeve (21) is fitted around the abutting post (22) and abuts against the second limiting block (12).

[0038] In this specific embodiment, the adjusting member (16) is a screw plug structure. Its outer periphery is provided with an external thread that engages with the internal thread of the end sidewall of the first flow channel (4). The abutment sleeve (21) is fitted onto the outer periphery of the abutment post (22) extending from the second limiting block (12), so that the adjusting member (16) and the second limiting block (12) form a sleeve guide engagement. During the axial advancement of the adjusting member (16), it plays a radial guiding role on the second limiting block (12) to prevent the second limiting block (12) from shifting.

[0039] The adjusting component (16) has an adjusting hole (23) on the side facing the end of the first flow channel (4) for easy adjustment. The adjusting hole (23) is a hexagonal hole or a slot structure, which allows the adjusting tool to apply force and rotate. At the same time, a detection groove (24) is provided on the surface of the adjusting surface (20). The detection equipment can identify the current rotation angle and axial displacement of the adjusting component (16) through the detection groove (24), thereby quantifying the adjustment amount of the idle stroke.

[0040] The process of adjusting the idle stroke of the linkage valve is as follows: Initial state: The first valve core (7) moves away from the bypass valve hole (10) to the initial limit position under the elastic force of the elastic element (18). At this time, the moving rod (14) is located in the limit position of the moving groove (15) near the opening of the first flow channel (4). The bushing (25) is in the maximum extension state and restricts the moving rod (14) from coming out. In this initial state, there is a large initial free stroke between the shoulder of the first valve core (7) and the bypass valve hole (10). This free stroke is larger than the normal design value.

[0041] Adjustment process: By turning the adjusting part (16) with the adjusting tool or equipment, the adjusting part (16) is pushed inward along the first thread (19), and its abutting sleeve (21) pushes the second limiting block (12) to move towards the bypass valve hole (10). The second limiting block (12) pushes the damping part (13), the first limiting block (11) and the moving rod (14) to move towards the bypass valve hole (10) in sequence. The elastic part (18) is gradually compressed. During this process, the bushing (25) folds and contracts synchronously with the movement of the first limiting block (11), continuously covering the outer periphery of the elastic part (18) and the moving rod (14) to maintain a sealed state.

[0042] Position: Continue to turn the adjusting component (16) until the shoulder of the first valve core (7) completely covers the bypass valve hole (10). At this time, the free stroke reaches the normal design value. As the elastic component (18) continuously provides elastic force to press, the adjusting component (16), the abutting sleeve (21), the second limit block (12), and the first limit block (11) always remain in abutting state, with no risk of loosening.

[0043] Example 2 Reference Figures 4 to 9 This specific embodiment provides a CBS system linkage valve detection device, including a frame (28), an indexing turntable (29) on one side of the frame (28), a plurality of first placement fixtures (30) on the indexing turntable (29), and a detection device (31) for detecting valve body flow on one side of the indexing turntable (29).

[0044] The frame (28) is provided with an empty stroke detection device (32), an empty stroke adjustment device (33) and an empty stroke re-inspection device (34) in sequence along the extension direction. The empty stroke detection device (32), the empty stroke adjustment device (33) and the empty stroke re-inspection device (34) are connected by a transport mechanism.

[0045] In this specific embodiment, the indexing turntable (29) is used to perform preliminary feeding and flow pre-inspection of the valve body. The valve body is rotated onto the transport mechanism via the indexing turntable (29) and then transported by the transport mechanism to the empty stroke detection device (32), the empty stroke adjustment device (33), and the empty stroke re-inspection device (34) for processing.

[0046] Empty travel detection device The empty stroke detection device (32) includes a second placement fixture (35) disposed on one side of the transport mechanism. A first detection table (36) is provided on one side of the second placement fixture (35). A first drive cylinder (37) is provided at the end of the first detection table (36). A push block (38) that abuts against the product valve core is provided at the drive end of the first drive cylinder (37). A first detection sensor (39) is provided on the push block (38).

[0047] The first drive cylinder (37) can drive the first detection sensor (39) to the first flow channel (4) to abut against the second limit block (12). The position recorded when the first detection sensor (39) abuts against the second limit block (12) is the initial position of the empty stroke. The first detection platform (36) is located on the side of the bypass valve (9) and is equipped with a second detection sensor (40). The second detection sensor (40) is used to detect the position of the bypass valve hole (10), which is the end position of the empty stroke.

[0048] The first drive cylinder (37) continues to push the first valve core (7) to the bypass valve hole (10) through the first detection sensor (39) until it completely covers the bypass valve hole (10) and records the stroke. This stroke is the actual empty stroke value of the valve body to be tested.

[0049] A control center (41) is provided on one side of the first detection station (36). The first detection sensor (39) and the second detection sensor (40) are electrically connected to the control center (41). The pushing distance of the first detection sensor (39) can be uploaded to the control center (41) and transmitted to the idle stroke adjustment device (33).

[0050] In this specific embodiment, both the first detection sensor (39) and the second detection sensor (40) are displacement sensors. The control center (41) calculates the actual idle stroke based on the difference between the readings of the first detection sensor (39) and the second detection sensor (40), and transmits the data to the idle stroke adjustment device (33) in real time.

[0051] Free stroke adjustment device The idle stroke adjustment device (33) includes an adjustment table (42) disposed on one side of the transport mechanism. A third placement clamp (43) is provided on the surface of the adjustment table (42), and a pressing mechanism (44) is provided on the top of the third placement clamp (43).

[0052] The adjustment platform (42) is provided with a first telescopic cylinder (45) that can extend and retract. The first telescopic cylinder (45) is provided with a first rotary drive (46) through the mounting plate. A second telescopic cylinder (47) is fixedly installed on one side of the first rotary drive (46). A gripper mounting plate (48) is fixedly installed on one side of the second telescopic cylinder (47).

[0053] The gripper mounting plate (48) has a first mounting cavity (49) in the center for mounting the movable plate (50). The end of the second telescopic cylinder (47) passes through the gripper mounting plate (48) and is fixedly connected to the movable plate (50). The gripper mounting plate (48) has second mounting cavities (52) on both sides for hinged connection of the first connecting arm (51). The other end of the first connecting arm (51) is hinged to a tensioning gripper (53). The tensioning gripper (53) and the gripper mounting plate (48) are also hinged to a second connecting arm (54).

[0054] Both the first rotary drive (46) and the first telescopic cylinder (45) are electrically connected to the control center (41).

[0055] clamping mechanism The clamping mechanism (44) includes a second rotary drive (55) located on one side of the third placement fixture (43) with an adjustment table (42). The output end of the second rotary drive (55) is provided with a pressing connection plate (56). The top of the pressing connection plate (56) is provided with a pressing cylinder (57). The pressing cylinder (57) is located on the top of the third placement fixture (43). The bottom of the pressing cylinder (57) is provided with a pressing element (58) for pressing the workpiece.

[0056] The second rotary drive (55) drives the pressing connecting plate (56) to swing above the third placement clamp (43), and the pressing cylinder (57) drives the pressing component (58) to move down to press the top of the valve body to prevent the valve body from shifting during the adjustment process.

[0057] The clamping mechanism is simultaneously installed in the fixtures of the empty stroke detection device and the empty stroke re-inspection device.

[0058] Adjustment process: The no-load adjustment process is as follows: The third placement fixture (43) receives the valve body to be adjusted, the second rotary drive (55) drives the pressing connecting plate (56) to swing above the valve body, and the pressing cylinder (57) drives the pressing component (58) to move downward, pressing and fixing the valve body on the third placement fixture (43). The first telescopic cylinder (45) drives the mounting plate to extend and retract laterally, adjusting the horizontal position of the gripper mechanism; the first rotary drive (46) drives the mounting plate to rotate, so that the tensioning gripper (53) is aligned with the adjustment hole (23) at the end of the valve body. The second telescopic cylinder (47) drives the moving plate (50) to move to the left, and the tensioning gripper (53) opens through the lever hinge structure of the first connecting arm (51) and the second connecting arm (54); The second telescopic cylinder (47) reverses the movement plate (50) to move to the right, and the clamping jaw (53) abuts against the side wall of the adjustment hole (23); The first rotary drive (46) drives the tensioning jaw (53) to rotate. The friction between the jaw and the side wall of the adjustment hole (23) drives the adjustment component (16) to rotate. The adjustment component (16) is axially pushed forward through the threaded transmission to change the empty stroke. The control center (41) automatically calculates the adjustment amount and controls the rotation angle based on the empty stroke data transmitted by the detection device. After adjustment, the second telescopic cylinder (47) drives the moving plate (50) to move to the left, the tensioning gripper (53) is released and reset, the pressing cylinder (57) drives the pressing part (58) to move upward and reset, and the valve body is transported to the next station by the transport mechanism.

[0059] Transportation equipment and conveyor trusses The second placement clamp (35) and the third placement clamp (43) are connected to the transport mechanism by a transport truss (59) that extends along the direction of the second placement clamp (35) and the third placement clamp (43).

[0060] The conveying truss (59) is located between the second placement fixture (35), the third placement fixture (43) and the transport mechanism and is equipped with a reciprocating mechanical gripper (60). The reciprocating mechanical gripper (60) moves on the truss to grab or place the valve body.

[0061] The transport mechanism includes a transport belt (61), and a number of fourth placement fixtures (62) for placing products are distributed on the surface of the transport belt (61). The fourth placement fixtures (62) are used to carry the valve body along the transport belt (61) to each work station.

[0062] Locking device The conveyor belt (61) is equipped with locking devices at the second placement clamp (35) and the third placement clamp (43). The locking devices include locking cylinders (63) set on both sides of the conveyor belt (61). The locking cylinders (63) are fixed to both sides of the conveyor belt (61) by the mounting bracket. The end of the locking cylinder (63) is provided with a rectangular locking plate (64). The fourth placement clamp (62) is provided with locking grooves (65) on both sides facing the rectangular locking plate (64) to abut and fix with the rectangular locking plate (64).

[0063] When the mobile mechanical gripper (60) needs to grab or place the valve body at the fourth placement fixture (62), the locking cylinder (63) drives the rectangular locking plate (64) to extend and engage with the locking grooves (65) on both sides of the fourth placement fixture (62). The abutting cooperation between the rectangular locking plate (64) and the locking grooves (65) locks the fourth placement fixture (62) laterally, preventing it from moving with the conveyor belt (61) and ensuring the accurate relative position between the mobile mechanical gripper (60) and the fourth placement fixture (62). After the valve body transfer is completed, the locking cylinder (63) retracts, releasing the lock on the fourth placement fixture (62), and the conveyor belt (61) resumes normal transport.

[0064] Re-inspection device The empty stroke re-inspection device (34) has the same structure as the empty stroke detection device (32) and is used to re-inspect the adjusted valve body to confirm whether the empty stroke has been adjusted to the normal range. The re-inspection results are also uploaded to the control center (41). Qualified products enter the next process, and unqualified products are returned to the empty stroke adjustment device (33) for readjustment or are judged to be scrapped.

[0065] Overall Workflow The overall workflow of the linkage valve testing equipment is as follows: The valve body is loaded via the indexing turntable (29) and the flow rate is pre-checked. Qualified products are placed on the fourth placement fixture (62). The conveyor belt (61) transports the valve body to the station of the empty stroke detection device (32), the locking device locks the fourth placement fixture (62), and the moving mechanical gripper (60) grabs the valve body and places it on the second placement fixture (35). The empty stroke detection device (32) detects the empty stroke value of the valve body through the first detection sensor (39) and the second detection sensor (40), and uploads the data to the control center (41); qualified products directly enter the next process, and valve bodies judged as defective products continue the subsequent adjustment process; The moving mechanical gripper (60) grabs the defective valve body and places it on the third placement fixture (43), and the clamping mechanism (44) clamps and fixes the valve body; The gripper mechanism aligns with the adjustment hole (23) and clamps it. The control center (41) controls the adjustment amount according to the empty stroke data and drives the adjustment component (16) to rotate until the empty stroke reaches the normal value. The mobile mechanical gripper (60) grabs the adjusted valve body and places it at the re-inspection station, and the no-stroke re-inspection device (34) verifies the adjustment result; Products that pass the re-inspection proceed to the next process, while products that fail the re-inspection are returned to the adjustment station for readjustment or scrapped.

[0066] Example 3 This specific embodiment provides an empty travel detection device (32) with damping detection function, including a second placement clamp (35) disposed on one side of the transport mechanism (61), and a first detection table (36) disposed on one side of the second placement clamp (35).

[0067] The first detection stage (36) is provided with a first driving cylinder (37) at its end. The driving end of the first driving cylinder (37) is provided with a push block (38) that abuts against the product valve core. The push block (38) is provided with a first detection sensor (39).

[0068] The first detection platform (36) is located between the first drive cylinder (37) and the push block (38) and is equipped with a pressure sensor. The pressure sensor is used to detect the change in resistance during the process of the push block (38) pushing the valve core.

[0069] The first drive cylinder (37) can drive the first detection sensor (39) to abut against the second limit block (12) in the first flow channel (4). The position recorded when the first detection sensor (39) abuts against the second limit block (12) is the initial position of the empty stroke. The first detection platform (36) is provided with a second detection sensor (40) on one side of the bypass valve (9). The second detection sensor (40) is used to detect the position of the bypass valve hole (10), that is, the end position of the empty stroke.

[0070] The first drive cylinder (37) continues to push the first valve core (7) to the bypass valve hole (10) through the first detection sensor (39) until it completely covers the bypass valve hole (10) and records the stroke. This stroke is the actual empty stroke value of the valve body to be tested.

[0071] A control center (41) is located on one side of the first detection station (36). The first detection sensor (39), the pressure sensor and the second detection sensor (40) are all electrically connected to the control center (41).

[0072] pressure sensor A pressure sensor is positioned between the drive rod and the push block (38) of the first drive cylinder (37). One end of the pressure sensor is connected to the end of the drive rod, and the other end is connected to the push block (38). During the process of the push block (38) pushing the valve core, the pressure sensor detects the pushing resistance in real time.

[0073] In this specific embodiment, the pressure sensor is a strain gauge pressure sensor, the range of which is selected according to the damping characteristics of the valve core, and it is capable of detecting axial thrust.

[0074] Damping detection principle The first drive cylinder (37) pushes the push block (38) to move axially, and the push block (38) pushes the first valve core (7) to move in sequence. During the movement of the first valve core (7), the damping element (13) provides motion resistance, which is transmitted to the pressure sensor through the first valve core (7) and the push block (38).

[0075] The pressure sensor transmits the detected pressure signal to the control center (41) in real time. The control center (41) analyzes the valve body damping characteristics based on the pressure-displacement curve. Normal damping: The pressure-displacement curve is smooth and the resistance value is within the design range, indicating that the damping component (13) is working normally; Excessive damping: The pressure value exceeds the design limit, indicating that the damping component (13) may be stuck, deformed or over-compressed; Insufficient damping: The pressure value is lower than the design limit, indicating that the damping component (13) may be worn, aged or have excessive assembly clearance.

[0076] Testing process The no-travel detection process with damping detection is as follows: The first driving cylinder (37) drives the push block (38) to move toward the valve body, and the first detection sensor (39) enters the first flow channel (4); The first detection sensor (39) abuts against the second limit block (12) and records the initial position of the empty stroke; at the same time, the pressure sensor records the initial contact pressure; The first drive cylinder (37) continues to push, and the push block (38) pushes the first valve core (7) to move towards the bypass valve hole (10); During the movement, the pressure sensor detects the pushing resistance in real time and transmits the pressure data to the control center (41). The first valve core (7) moves to completely cover the bypass valve hole (10), and the second detection sensor (40) detects that the bypass valve hole (10) is covered and records the end position of the empty stroke. The control center (41) calculates the actual empty stroke based on the difference between the initial position and the final position, and analyzes the valve body damping state based on the pressure-displacement curve. The no-load stroke value and damping status are both uploaded to the control center (41), and the control center (41) makes a comprehensive judgment on whether the valve body is qualified: The first testing station (36) is equipped with a pressure sensor between the first driving cylinder (37) and the push block (38). During the process of the push block (38) pushing the valve core, the pressure sensor detects the pushing resistance in real time. This resistance reflects the working state of the damping component (13). The control center (41) analyzes the damping characteristics of the valve body according to the pressure-displacement curve. While detecting the empty stroke, it evaluates the performance of the damping component (13) to achieve dual detection of empty stroke and damping. For valve bodies with abnormal damping, even if the empty stroke is qualified, they can be identified and separated to prevent valve bodies with damping failure from flowing into subsequent processes and improve the overall quality reliability of the product. The pressure sensor works in conjunction with the first detection sensor (39) and the second detection sensor (40) to acquire empty stroke data and damping data in one detection action. The detection efficiency is high and no additional detection station is required.

Claims

1. A CBS system linkage valve, comprising a valve body, wherein a through flow channel is provided at the center of the valve body, a sealing element is provided at the center of the flow channel to separate the flow channel into a first flow channel and a second flow channel, a slidable valve stem is provided through the center of the sealing element, a first valve core and a second valve core are respectively provided in the first flow channel and the second flow channel of the valve stem, and a bypass valve is provided at the first valve core of the valve body, the bypass valve including a bypass valve hole communicating with the first flow channel, characterized in that: The first valve core includes a first limiting block disposed towards the sealing element and a second limiting block disposed towards the end of the first flow channel. A damping element is provided between the first and second limiting blocks. A moving rod is provided on the valve stem side of the first limiting block. The valve stem has a moving groove. The moving rod is placed in the moving groove to create an adjustable range between the valve stem and the first valve core. An elastic structure is provided between the moving rod and the moving groove. An adjusting element is provided on the inner wall of the first flow channel on the side of the second limiting block, which can be axially adjusted and abuts against the second limiting block. The axial movement of the adjusting element can push the first valve core to change its axial position. The elastic structure includes a limiting platform disposed in the moving groove, and the moving rod passes through it. At the limiting platform, an elastic element is sleeved around the outer periphery of the moving rod. One end of the elastic element abuts against the limiting platform, and the other end abuts against the first limiting block. A sealing structure is provided between the first limiting block and the valve stem. The sealing structure covers the elastic element and the outer periphery of the moving rod. The first flow channel has a first thread on its end sidewall. The adjusting member includes an adjusting surface that mates with the first thread. An abutting sleeve is provided on the side of the adjusting surface facing the second abutting block. An abutting post is provided on the side of the second abutting block facing the abutting sleeve. The abutting sleeve is sleeved around the abutting post and abuts against the second abutting block. An adjusting hole is provided on the side of the adjusting member facing the end of the first flow channel for easy adjustment. A detection groove is provided on the surface of the adjusting surface for easy detection by detection equipment.

2. The CBS system linkage valve according to claim 1, characterized in that: The sealing structure includes a foldable and retractable bushing. One end of the bushing is sealed and fixedly connected to the valve stem via an upper retaining ring, and the other end is sealed and fixedly connected to the outer periphery of the first abutment block via a lower retaining ring.

3. A CBS system linkage valve testing device, used to test a CBS system linkage valve according to any one of claims 1-2, comprising a frame, an indexing turntable on one side of the frame, a plurality of first placement fixtures on the indexing turntable, and a detection device for detecting valve body flow rate on one side of the indexing turntable, characterized in that: The frame is provided with empty travel detection devices for detecting the empty travel of the valve body in sequence along the extension direction; An empty stroke adjustment device, wherein the adjustment device adjusts the defective products detected by the empty stroke detection device; The no-stroke re-inspection device is used to re-inspect defective valve bodies after adjustment. The empty travel detection device, the empty travel adjustment device, and the empty travel re-inspection device are connected by a transport mechanism; The empty travel detection device includes a second placement fixture disposed on one side of the transport structure for placing the product to be tested. A first detection platform is disposed on one side of the second placement fixture. A first drive cylinder is disposed at the end of the first detection platform. A push block, which abuts against the product valve core, is disposed at the end of the first drive cylinder. The push block is equipped with a first detection sensor. The first drive cylinder can drive the first detection sensor into the first flow channel to abut against the second abutment block. The abutment between the first detection sensor and the second abutment block marks the initial position of the empty travel. A second detection sensor is disposed on the first detection platform near the bypass valve. The second detection sensor is used to detect the position of the bypass valve orifice, i.e., the key position of the empty travel. The first drive cylinder, through the first detection sensor, continues to push the first valve core until it completely covers the bypass valve orifice and records the travel distance. A control center is disposed on one side of the first detection platform. The pushing distance of the first detection sensor can be uploaded to the control center. The control center transmits the data to the idle stroke adjustment device, which includes an adjustment platform located on one side of the transport mechanism. The adjustment platform has a third placement clamp on its surface and a pressing mechanism on its top. A first telescopic cylinder capable of extension and retraction is located on one side of the adjustment platform. The first telescopic cylinder has a first rotary drive component mounted on a mounting plate. A second telescopic cylinder is fixedly mounted on one side of the first rotary drive component. A gripper mounting plate is fixedly mounted on one side of the second telescopic cylinder. The gripper mounting plate has a first mounting cavity at its center for mounting a movable plate. The end of the second telescopic cylinder passes through the gripper mounting plate and is fixedly connected to the movable plate. The gripper mounting plate has second mounting cavities on both sides for hinged first connecting arms. A tensioning gripper is hinged to the other end of the first connecting arm. A second connecting arm is also hinged between the tensioning gripper and the gripper mounting plate. The first rotary drive component and the first telescopic cylinder are electrically connected to the control center.

4. The CBS system linkage valve detection device according to claim 3, characterized in that: The clamping mechanism includes a second rotary drive unit with an adjustment table located on one side of the third placement fixture. The output end of the second rotary drive unit is provided with a pressing connecting plate. The top of the pressing connecting plate is provided with a pressing cylinder. The pressing cylinder is located on the top of the third placement fixture. The bottom of the pressing cylinder is provided with a pressing component for pressing the workpiece.

5. The CBS system linkage valve detection device according to claim 4, characterized in that: The second and third placement fixtures are connected to the transport mechanism by a conveying truss. The conveying truss extends along the direction of the second and third placement fixtures. The transport fixture is located between the second and third placement fixtures and the transport mechanism and is equipped with a reciprocating mechanical gripper. The transport mechanism includes a transport belt, and a plurality of fourth placement fixtures for placing products are distributed on the surface of the transport belt. The transport belt is equipped with a locking device at the second and third placement fixtures to lock the fourth placement fixtures when the mechanical grippers are in operation.

6. The CBS system linkage valve detection device according to claim 5, characterized in that: The locking device includes locking cylinders located at the second and third placement clamps of the conveyor belt. The locking cylinders are mounted on both sides of the conveyor belt via mounting brackets. The ends of the locking cylinders are provided with rectangular locking plates. The fourth placement clamps are provided with locking grooves on both sides facing the rectangular locking plates, which abut against and are fixed to the rectangular locking plates.

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