A kind of selecting machine

Abstract

The application discloses a kind of pad selection machines, including the detection device (1) for detecting the thickness of each gasket groove (011,021) for installing elastic baffle ring to electric bridge (01,02), detection device (1) includes detection assembly (13), detection assembly (13) can be moved to be close to or away from each gasket groove (011,021);Detection assembly (13) includes detection part, driving part and displacement sensor (131), detection part includes detection protrusion (1342), driving part can drive detection protrusion (1342) into the top wall and bottom wall between gasket groove (011,021), and it moves between the top wall and bottom wall of gasket groove (011,021) in vertical direction, displacement sensor (131) can detect the moving distance of detection protrusion (1342) in vertical direction.The pad selection machine of the application does not need to be tried artificially, and the detection reliability is high, and the working efficiency can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle manufacturing technology, and in particular to a pad selection machine. Background Technology

[0002] With social development and people's awareness of energy conservation, emission reduction, green travel, and building a beautiful ecological environment, electric vehicles have gradually entered the public eye, and various electric axles have been developed and applied to the automotive field.

[0003] Currently, the selection of the elastic retaining ring for the main reduction gear assembly of the electric bridge is done manually based on experience and repeated trials to complete the assembly. This method is relatively clumsy and unreliable, involves high labor intensity, and carries significant quality risks. Summary of the Invention

[0004] The present invention provides a gasket selection machine, including a detection device for detecting the thickness of each gasket groove of the elastic retaining ring of the bridge, the detection device including a detection component, the detection component being movable to move closer to or further away from each of the gasket grooves;

[0005] The detection assembly includes a detection unit, a driving unit, and a displacement sensor. The detection unit includes a detection protrusion. The driving unit can drive the detection protrusion into the space between the top and bottom walls of the gasket groove and move it vertically between the top and bottom walls of the gasket groove. The displacement sensor can detect the vertical movement distance of the detection protrusion.

[0006] The gasket selection machine of the present invention directly selects an elastic retaining ring that matches the thickness of the gasket groove by detecting the thickness of the gasket groove, without the need for repeated trials based on human experience. This not only ensures high reliability and effectively avoids human error, but also greatly reduces the involvement of operators and improves the labor intensity of workers.

[0007] Optionally, the driving part includes a first driving part and a second driving part, and the detection part further includes a vertically extending connecting part. The top end of the connecting part is installed at the bottom of the second driving part, and the detection protrusion is disposed on the outer side of the bottom end of the connecting part. The first driving part can drive the second driving part and the detection part to move in a vertical direction, and the second driving part can drive the detection part to move horizontally along the second driving part.

[0008] Optionally, the first driving unit is a first driving cylinder, which includes a first cylinder body and a first push rod. The bottom end of the first push rod is provided with a floating joint, and the bottom end of the first push rod is connected to the top of the second driving unit through the floating joint. The top end of the first push rod passes through the top wall of the first cylinder body and is connected to the displacement sensor.

[0009] Optionally, a guide post and a guide sleeve for mounting the guide post are further provided between the first cylinder and the second drive unit. There is a predetermined gap between the guide post and the guide sleeve. The first drive unit can drive the second drive unit and the detection unit to move vertically along the guide post.

[0010] Optionally, the detection device further includes a positioning component, which is at a predetermined distance from the detection component. The positioning component is able to determine the center position of the gasket groove and is opposite to the center of the gasket groove. During detection, the detection component moves the predetermined distance to be opposite to the center of the gasket groove.

[0011] Optionally, the detection device further includes a first base, a fixing component, and a driving component. The fixing component is provided with a horizontal first guide rail, and the detection component and the positioning component are both mounted on the first guide rail. The first base is provided with a vertical second guide rail, and the fixing component is mounted on the second guide rail. The driving component includes a first driving unit and a second driving unit. The first driving unit can drive the detection component and the positioning component to move horizontally along the first guide rail, and the second driving unit can drive the fixing component to move vertically along the second guide rail.

[0012] Optionally, the detection device further includes a support assembly for supporting and positioning the bridge. The support assembly includes a support base body. The top of the support base body is provided with a support portion for supporting and positioning the bridge and a clamping portion for pressing the bridge. The support portion includes a first support portion and a second support portion for supporting the first positioning surface and the second positioning surface of the bridge, respectively. The support head at the top of the second support portion is capable of floating in the vertical direction.

[0013] Optionally, the detection device further includes a second base, the second base being provided with a horizontal third guide rail, the support body being detachably mounted on the third guide rail, and a third drive unit, the third drive unit being capable of driving the support body to move along the third guide rail to move closer to or further away from the detection component.

[0014] Optionally, the pad selection machine further includes a re-selection device for detecting the thickness of the selected elastic retaining ring. The re-selection device includes a first positioning part for supporting the elastic retaining ring, a second positioning part opposite to the first positioning part, and a displacement detection switch. The first positioning part is provided with a mounting hole along the axial direction, and the displacement detection switch is vertically installed in the mounting hole. The second positioning part can push the detection head of the displacement detection switch to move in the vertical direction, and the displacement detection switch can detect the movement distance of the detection head.

[0015] Optionally, the device also includes a selection operation table for supporting the selection device. The top of the selection operation table is provided with a plurality of anti-mistake shafts, which correspond to the positions of the gasket slots of the bridge supported on the top of the selection operation table. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the first type of bridge detected by the pad selection machine of the present invention;

[0017] Figure 2 This is a schematic diagram of the support assembly and the first type of bridge in the pad selection machine of the present invention;

[0018] Figure 3 for Figure 2 Top view of the central support assembly and the first type of bridge;

[0019] Figure 4 for Figure 2 Front view of the central support component and the first type of bridge;

[0020] Figure 5 This is a schematic diagram of the support assembly and the second type of bridge in the pad selection machine of the present invention;

[0021] Figure 6 for Figure 5 Top view of the middle support assembly and the second type of bridge;

[0022] Figure 7 for Figure 5 Front view of the middle support component and the second type of bridge;

[0023] Figure 8 This is a schematic diagram of a specific embodiment of the pad selection machine provided by the present invention;

[0024] Figure 9 for Figure 8 A schematic diagram of the detection and positioning components in a pad selection machine;

[0025] Figure 10 for Figure 9 Main view of the detection component and the positioning component;

[0026] Figure 11 for Figure 9 A cross-sectional view of the main view of the detection component and the positioning component;

[0027] Figure 12 for Figure 9 Cross-sectional view of the middle probe and the second push rod;

[0028] Figure 13 for Figure 8 A schematic diagram of the detection device in a pad selection machine;

[0029] Figure 14 for Figure 13 Front view of the detection device;

[0030] Figure 15 for Figure 13 Left view of the detection device;

[0031] Figure 16 for Figure 13 Schematic diagram of the middle connecting platform;

[0032] Figure 17 for Figure 13 Main view of the connecting platform;

[0033] Figure 18 for Figure 8 A schematic diagram of the re-selection operation table in the pad sorting machine;

[0034] Figure 19 for Figure 18 Main view of the selection console;

[0035] Figure 20 for Figure 8 A schematic diagram of the secondary separation device in a pad separator;

[0036] Figure 21 for Figure 20 Left view of the multiplexing device;

[0037] Figure 22 for Figure 20 Front view of the multiplexing device;

[0038] in, Figures 1 to 22 The annotations in the attached figures are explained as follows:

[0039] 01-Wheatstone bridge; 011-Shim groove; 012-Bearing; 013-First locating surface; 014-Second locating surface;

[0040] 02-Wheatstone bridge; 021-Gasket groove; 022-First positioning surface; 023-Second positioning surface;

[0041] 1-Detection device;

[0042] 11-Support assembly; 111-Support base body; 112-Support rod; 1121-Rod section; 1122-Support section; 113-Clamping cylinder; 1131-Clamping cylinder body; 1132-Clamping rod; 114-Support column; 1141-Support head; 115-Handle; 116-Cylinder seat; 117-Support rod seat; 118-Positioning pin;

[0043] 12-Support assembly; 121-Support base body; 122-Positioning seat; 123-Support column; 1231-Support head; 124-Clamping cylinder; 1241-Clamping cylinder body; 1242-Clamping rod; 125-Handle; 126-Limit seat; 127-Positioning pin;

[0044] 13-Detection component; 131-Displacement sensor; 132-First drive cylinder; 1321-First cylinder body; 1322-First push rod; 133-Second drive cylinder; 1331-Second cylinder body; 1332-Second push rod; 134-Probe; 1341-Connecting rod; 1342-Detection protrusion; 135-Floating joint; 136-Guide post; 137-Guide sleeve; 138-Connecting plate;

[0045] 14-Positioning component; 141-Connecting post; 142-Connecting plate;

[0046] 15-Connecting platform; 151-First guide rail; 152-Slider; 153-First servo motor;

[0047] 16-First base; 161-Second guide rail; 162-Second servo motor; 163-Gear motor; 164-Balance cylinder; 165-Floating joint;

[0048] 17-Second base; 171-Third guide rail; 172-Third servo motor; 173-Coupling; 174-Transition plate;

[0049] 2-Selection device; 21-Base; 211-Upper base; 212-Lower base; 213-Connecting seat; 22-Lower pressure head; 23-Displacement detection switch; 24-Upper pressure head; 241-Connecting protrusion; 25-Third drive cylinder; 26-Floating joint; 27-Fourth guide rail;

[0050] 3-Multiple selection operating table; 31-Upper support table; 32-Lower support table; 321-Anti-misalignment axis. Detailed Implementation

[0051] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] In this article, "front," "back," "left," "right," "up," and "down" are all prefixed with "front." Figure 8 Taking the orientation as an example, the direction perpendicular to the paper and outward is "front", and the direction perpendicular to the paper and inward is "back"; taking the horizontal plane at the bottom of the second cylinder 1331 as a reference, the direction radially closer to the center of the second cylinder 1331 is "inner", and the direction radially away from the center of the second cylinder 1331 is "outer".

[0053] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the structure of the first type of bridge 01 detected by the present invention; Figure 2 This is a schematic diagram of the structure of the support component 11 and the first type of bridge 01 in the pad selection machine provided by the present invention; Figure 3 for Figure 2 Top view of the central support component 11 and the first type of bridge 01; Figure 4 for Figure 2 Front view of the middle support component 11 and the first type of bridge 01.

[0054] Please refer to Figure 3 In the first type of bridge 01, the bridge 01 has three connecting end faces on the top left side for mounting a motor. Each of the three connecting end faces has a mounting hole. In this embodiment, the three connecting end faces serve as the first positioning surface 013 of the bridge 01, and the mounting hole serves as the positioning hole of the bridge 01. Please refer to... Figure 4 A bearing seat is provided on the right side of the bridge 01. In this embodiment, the bearing seat at the bottom right side serves as the second positioning surface 014 of the bridge 01.

[0055] Please refer to Figures 5 to 7 , Figure 5 This is a schematic diagram of the structure of the support component 12 and the second type of bridge 02 in the pad selection machine provided by the present invention; Figure 6 for Figure 5 Top view of the middle support component 12 and the second type of bridge 02; Figure 7 for Figure 5 Front view of the central support component 12 and the first type of bridge 02.

[0056] In the second type of bridge 02, the disc-shaped mounting surface facing the motor connection end of the bridge 02 serves as the first positioning surface 022 of the bridge 02. The disc-shaped mounting surface has mounting holes that serve as positioning holes for the bridge 02. The bearing seat at the bottom right end of the bridge 02 serves as the second positioning part 023 of the bridge 02.

[0057] After understanding the structure of the two types of bridges detected by the pad selection machine of the present invention, we will continue to introduce the structure of the pad selection machine of the present invention.

[0058] Please refer to Figure 8 and Figure 9 , Figure 8 This is a schematic diagram of a specific embodiment of the pad selection machine provided by the present invention; Figure 9 for Figure 8 A schematic diagram of the detection component 13 and the positioning component 14 in the pad selection machine.

[0059] This invention provides a gasket selection machine, including a detection device 1 for detecting the thickness of each gasket groove in which an elastic retaining ring is mounted on a bridge circuit. The detection device 1 includes a detection component 13, which is movable to move closer to or further away from each gasket groove. The detection component 13 includes a detection part, a driving part, and a displacement sensor 131. The detection part includes a detection protrusion 1342. The driving part can drive the detection protrusion 1342 into the space between the top and bottom walls of the gasket groove and drive the detection protrusion 1342 to move vertically between the top and bottom walls of the gasket groove. The displacement sensor 131 can detect the vertical movement distance of the detection protrusion 1342. The thickness of the gasket groove can be determined based on the movement distance of the detection protrusion 1342 between the top and bottom walls of the gasket groove, thereby allowing the selection of an elastic retaining ring that matches the thickness of the gasket groove.

[0060] The gasket selection machine of the present invention detects the thickness of the gasket groove and then selects a matching elastic retaining ring based on the measured thickness of the gasket groove, without the need for repeated trial and error based on human experience. This not only ensures high reliability and effectively avoids errors caused by human operation, but also greatly reduces the degree of operator involvement and improves the labor intensity of workers and the assembly operation environment.

[0061] Further, please refer to Figures 10 to 12 To understand the detailed structure of the detection component 13 and the positioning component 14 in this embodiment. Figure 10 for Figure 9 Main view of the detection component 13 and the positioning component 14; Figure 11 for Figure 9 A cross-sectional view of the main view of the detection component 13 and the positioning component 14; Figure 12 for Figure 9 Cross-sectional view of the middle probe 134 and the second push rod 1332.

[0062] The detection assembly 13 of the present invention includes a driving part comprising a first driving part and a second driving part connected to each other. The detection part also includes a vertically extending connecting part. The top end of the connecting part is mounted on the bottom wall of the second driving part. The detection protrusion 1342 is disposed on the outer side of the bottom end of the connecting part. The first driving part can drive the second driving part and the detection part to move in the vertical direction. The second driving part can drive the detection protrusion 1342 to move radially along the second driving part so that the detection protrusion 1342 enters between the top wall and the bottom wall of the gasket groove.

[0063] For details, please refer to Figure 10 and Figure 11In this embodiment, the first driving unit in the detection component 13 is a first driving cylinder 132, which is specifically a dual-axis compound cylinder, including a first cylinder body 1321 and a first push rod 1322. A floating joint 135 is provided at the bottom end of the first push rod 1322, and the first push rod 1322 is vertically connected to the top of the second driving unit through the floating joint 135. The top end of the first push rod 1322 passes through the top wall of the first cylinder body 1321 and is connected to the displacement sensor 131. The second driving unit is a second driving cylinder 133, which is specifically a three-jaw cylinder, including a second cylinder body 1331 and three second push rods 1332 evenly arranged at the bottom of the second cylinder body 1331. The second push rod 1332 extends radially along the second cylinder 1331. The second cylinder 1331 can drive the second push rod 1332 to move radially. It also includes a claw 134, which serves as the detection unit in this embodiment. The claw 134 includes a vertically extending connecting rod 1341. The top of the connecting rod 1341 is vertically disposed at the inner end of the second push rod 1332. The detection protrusion 1342 is disposed on the outer side of the bottom end of the connecting rod 1341. The second cylinder 1331 drives the second push rod 1332 to move radially outward, and at the same time can drive the connecting rod 1341 and the detection protrusion 1342 to move radially outward, so that the detection protrusion 1342 enters between the top wall and the bottom wall of the gasket groove.

[0064] In this embodiment, the detection component 13 uses a dual-axis double-acting cylinder and a three-jaw cylinder to drive the detection protrusion 1342 into the spacer groove between the top and bottom walls, and to drive the detection protrusion 1342 to move between the top and bottom walls of the spacer groove to detect the thickness of the spacer groove. The corresponding elastic retaining ring is selected based on the obtained spacer groove thickness. The operation is simple and the reliability is high, which effectively improves the detection accuracy of the detection component 13 of the present invention.

[0065] Please refer to Figure 12 In this embodiment, the second push rod 1332 and the probe 134 are actually an integrated structure. They are described separately here only to facilitate understanding of the function of each part. Of course, the second push rod 1332 and the probe 134 can also be separate structures that can be assembled together.

[0066] In addition, in this embodiment, the second drive unit is a three-jaw cylinder, and the number of detection units is also three. In practical applications, the second drive unit can also be a two-jaw cylinder or a four-jaw cylinder, and the number of detection units is not limited.

[0067] The first push rod 1322 is connected to the top wall of the second cylinder 1331 by a floating joint 135, which mainly plays the role of fine adjustment. The level of the detection protrusion 1342 can be adjusted through the floating joint 135 to ensure that the detection protrusion 1342 can always remain in a horizontal state during the test, thereby improving the detection accuracy of the detection component 13 of the present invention.

[0068] Please continue to refer to this. Figure 10 and Figure 11 Three guide posts 136 are provided between the connecting plate 138 that fixes the first cylinder 1321 and the top wall of the second cylinder 1331. Each guide post 136 is fitted with a guide sleeve 137 on its outer side. There is a predetermined gap between the guide sleeve 137 and the guide post 136. Specifically, the gap on one side is 0.5mm.

[0069] A guide post 136 is provided between the first cylinder 1321 and the second cylinder 1331, mainly to guide the movement of the second drive cylinder 133 in the vertical direction as much as possible. A guide sleeve 137 is provided on the outer side of the guide post 136, which also serves to make minor adjustments to adjust the level of the detection protrusion 1342.

[0070] by Figure 1 Taking the leftmost gasket groove 011 of the first type of bridge 01 as an example, the process of the detection component 13 of the present invention detecting the thickness of the gasket groove 011 is as follows:

[0071] In operation, the first drive cylinder 132 drives the second drive cylinder 133 and the probe 134 to move vertically downwards. When the bottom wall of the detection protrusion 1342 contacts the top end face of the bearing 012 installed below the gasket groove 011, the first drive cylinder 132 stops moving. The second drive cylinder 133 drives the second push rod 1332 to move radially outwards, thereby moving the detection protrusion 1342 radially outwards, so that the detection protrusion 1342 enters between the top and bottom walls of the gasket groove 011. After the detection protrusion 1342 enters between the top and bottom walls of the gasket groove 011, the first drive cylinder 132 actuates again, driving the second drive cylinder 133 and the probe 134 to move vertically upwards. When the top wall of the detection protrusion 1342 contacts the top wall of the gasket groove 011 and can no longer move upward, the first drive cylinder 132 stops operating. During this process, the displacement sensor 131 measures the vertical movement distance of the detection protrusion 1342. The movement distance of the detection protrusion 1342 from contact with the bottom wall of the gasket groove 011 to contact with the top wall of the gasket groove is represented by "A", the height of the detection protrusion 1342 is represented by "B", and the thickness of the gasket groove 011 where the elastic retaining ring is installed is represented by "H". Then, the thickness H of the gasket groove 011 is AB, and the required thickness of the elastic retaining ring is H. At this time, the thickness detection of the gasket groove 011 is completed.

[0072] Please continue to refer to this. Figure 9 and Figure 10The detection device 1 of the present invention further includes a positioning component 14 for determining the relative position of the gasket groove and the detection component 13. The positioning component 14 and the detection component 13 are both fixed on the same connecting plate 138, and the positioning component 14 and the detection component 13 have a predetermined distance. In this embodiment, the distance between the positioning component 14 and the detection component 13 is 150mm. The center position of the gasket groove can be determined by the positioning component 14. At this time, the positioning component 14 is opposite to the center of the gasket groove. During detection, the detection component 13 moves a predetermined distance, i.e., 150mm, so that the detection component 13 is exactly opposite to the center of the gasket groove. The detection component 13 can then detect the thickness of the gasket groove.

[0073] Specifically, the positioning component 14 includes a vertical connecting column 141 and a horizontal connecting plate 142 fixed to the bottom of the connecting column 141. The top of the connecting column 141 is fixed to the connecting plate 138 by a bearing. The connecting column 141 can rotate around its axial direction. The connecting plate 142 can magnetically attract a dial indicator. During measurement, the center of the gasket groove is determined by rotating the dial indicator. When the pointer of the dial indicator is relative to zero, the connecting column 141 is aligned with the center of the gasket groove. Then, the detection component 13 and the positioning component 14 are moved 150mm to the right simultaneously. At this point, the detection component 13 is aligned with the center of the gasket groove, ensuring the detection accuracy of the detection component 13. Of course, in practical applications, other methods can also be used to determine the center position of the gasket groove, such as using a lever gauge, laser rangefinder, or dial indicator to align the center of the gasket groove.

[0074] Please refer to Figures 13 to 15 To understand the structure of the detection device 1 of the present invention. Figure 13 for Figure 8 Schematic diagram of the detection device 1 in the pad selection machine; Figure 14 for Figure 13 Front view of detection device 1; Figure 15 for Figure 13 Left view of detection device 1.

[0075] The detection device 1 of the present invention further includes a first base 16, a fixing component, and a driving component. The fixing component is provided with a horizontal first guide rail 151. The detection component 13 and the positioning component 14 are mounted on the first guide rail 151 through a connecting plate 138. The first base 16 is provided with a vertical second guide rail 161. The fixing component is mounted on the second guide rail 161. The driving component includes a first driving unit and a second driving unit. The first driving unit can drive the detection component 13 and the positioning component 14 to move horizontally along the first guide rail 151 so that the detection component 13 is coaxial with each pad slot of the bridge. The second driving unit can drive the fixing component to move vertically along the second guide rail 161 so that the detection component 13 moves closer to or further away from the pad slot.

[0076] In this embodiment, the pad selection machine moves the detection component 13 along the first guide rail 151 and the second guide rail 161 in the horizontal and vertical directions, so that the detection component 13 can be coaxial with each pad groove and close to the pad groove, resulting in high positioning accuracy and effectively improving the positioning accuracy of the detection component 13.

[0077] Further, please refer to Figure 16 and Figure 17 To understand the specific structure of the fixing component in the detection device 1 of the present invention, Figure 16 for Figure 13 Schematic diagram of the structure of the middle connecting platform 15; Figure 17 for Figure 13 Main view of the connecting platform 15.

[0078] In this embodiment, the fixing component is specifically a connecting platform 15. The bottom of the connecting platform 15 is provided with a first guide rail 151 along the left and right direction. The connecting plate 138 of the fixing detection component 13 and the positioning component 14 is installed on the first guide rail 151 through the slider 152. The first driving unit includes a first servo motor 153 and a lead screw and nut transmission device. The lead screw and nut transmission device can convert the rotation of the first servo motor 153 into the movement of the detection component 13 and the positioning component 14 along the first guide rail 151, so that the positioning component 14 can determine the center position of each gasket groove, so that the detection component 13 can be coaxial with each gasket groove on the bridge during detection. In addition, the servo motor has good positional accuracy, which can ensure that the detection component 13 is in the theoretical position during operation, thereby improving the detection accuracy.

[0079] Please continue to refer to this. Figure 14 and Figure 15 The second drive unit includes a second servo motor 162, a reduction motor 163, and a lead screw and nut transmission unit connected sequentially from top to bottom. The connecting platform 15 is mounted on the second guide rail 161. The lead screw and nut transmission unit can convert the rotation of the second servo motor 162 into the vertical movement of the connecting platform 15 along the second guide rail 161, so that the detection component 13 can approach each gasket groove to detect the thickness of the gasket groove.

[0080] Furthermore, a balancing cylinder 164 is also provided between the connecting platform 15 and the first base 16. Specifically, the cylinder body of the balancing cylinder 164 is fixed to the first base 16, and the push rod of the balancing cylinder 164 is vertically connected to the top of the connecting platform 15 to improve the connection stability between the connecting platform 15 and the first base 16 and prevent the connecting platform 15 from falling accidentally. In addition, a floating joint 165 is also provided at the bottom of the push rod of the balancing cylinder 164. The push rod of the balancing cylinder 164 is connected to the connecting platform 15 through the floating joint 165, which can play the role of adjusting the level of the detection component 13 and ensuring the detection accuracy of the detection component 13.

[0081] In this embodiment, two servo motors are used to drive the detection component 13. In practical applications, other driving methods can also be used, such as connecting the detection component 13 to a robot, receiving a preset command, driving the detection component 13 to move to a specified position, and the detection component 13 completing the detection of the gasket groove thickness. This is also a feasible solution.

[0082] The detection device 1 of the present invention further includes a support assembly for supporting and positioning the bridge. The support assembly includes a support base body. The top of the support base body is provided with a support part for supporting and positioning the bridge and a clamping part for clamping the bridge. The support part includes a first support part for supporting a first positioning surface of the bridge and a second support part for supporting a second positioning part of the bridge. The support head at the top of the second support part can move in the vertical direction.

[0083] This invention provides support components with two specific implementations for the structural design of two types of bridges.

[0084] Please refer to Figure 3 and Figure 4 The support assembly 11 in the first specific embodiment is used to support and position the first type of bridge 01. The first support part includes three support rods 112, which are used to support the three first positioning surfaces 013 of the bridge 01. The support rod 112 specifically includes a vertical rod part 1121 and a horizontal support part 1122. The rod part 1121 is fixed to a predetermined position on the top of the support body 111 by a support rod seat 117. The support part 1122 is used to support the bottom wall of the first positioning surface 013 and plays a supporting role. In addition, the support part 1122 is also provided with a vertical positioning pin 118 at a predetermined position, which is used to cooperate with the mounting hole on the first positioning surface 013 of the bridge 01 to determine the relative position between the bridge 01 and the support part 1122 and ensure the installation accuracy of the bridge 01.

[0085] The clamping part specifically includes three clamping cylinders 113 that match the support rod 112. Each clamping cylinder 113 includes a clamping cylinder body 1131 and a clamping rod 1132 horizontally connected to the top of the clamping cylinder body 1131. The clamping cylinder body 1131 is fixed to a predetermined position on the top of the support body 111 via a cylinder seat 116. The clamping rod 1132 can rotate horizontally around the connection with the clamping cylinder body 1131, thereby clamping or loosening the positioning surface of the bridge 01. In this way, the bottom wall of the three first positioning surfaces 013 of the bridge 01 is supported by the support part 1122, and the top wall is clamped by the clamping rod 1132, ensuring that the bridge 01 will not shift during the test and improving the positioning accuracy.

[0086] Furthermore, the second support is a support column 114, and the support head 1141 at the top of the support column 114 can float in the vertical direction. When the first positioning surface 013 and the second positioning surface 014 of the electric bridge 01 are supported on the top of the support 1122 and the support head 1141, the levelness of the electric bridge 01 can be detected by dial gauge. If the electric bridge 01 is not detected to be in a horizontal state, the electric bridge 01 can be floated and adjusted by the support head 1141 at the top of the support column 114 to ensure that the electric bridge 01 can be placed horizontally, thereby ensuring the detection accuracy of the gasket groove thickness.

[0087] In addition, handles 115 are provided at both ends of the support body 111, making it more convenient to replace the support assembly 11 as a whole.

[0088] Please refer to Figures 5 to 7 In the second specific embodiment, the support component 12 is used to support and position the second type of bridge 02. Specifically, the first support part is an I-shaped positioning seat 122. The top of the positioning seat 122 is a disc-shaped support surface, which is used to contact the disc-shaped first positioning surface 022 of the bridge 02 to provide support. A positioning pin 127 is provided at a predetermined position on the top edge of the positioning seat 122, which is used to cooperate with the positioning hole on the disc-shaped first positioning surface 022 of the bridge 02 to determine the installation position of the bridge 02 and improve the positioning accuracy.

[0089] In addition, the clamping part consists of three clamping cylinders 124. Each clamping cylinder 124 includes a clamping cylinder body 1241 and a clamping rod 1242. The clamping cylinder body 1241 is fixed at a predetermined position on the top of the support body 121. The clamping rod 1242 can rotate horizontally around the connection with the clamping cylinder body 1241 to clamp or loosen the first positioning surface 022 of the bridge 02. The second support part is a support column 123. The support part 123 contacts the second positioning surface 023 of the bridge 02 through the support head 1231 at the top. While providing support, it can also adjust the level of the bridge 02 to ensure the installation accuracy of the bridge 02, thereby improving the detection accuracy of the detection component 13.

[0090] Furthermore, a V-shaped limiting seat 126 is provided between the positioning seat 122 and the support column 123 to support and limit the bridge 02, ensuring the positional accuracy of the bridge 02 during the detection process, thereby ensuring the accuracy of the detection results.

[0091] Handles 125 are provided at both ends of the support body 121, making it more convenient to replace the support assembly 12 as a whole.

[0092] Both support components in this embodiment use a clamping cylinder to clamp the bridge. In practical applications, the clamping part can also have other structural forms, such as clamping the bridge by a screw and a clamping plate. The position of the clamping plate can be adjusted by turning the knob screw to clamp or loosen the positioning surface of the bridge, which is also a feasible solution.

[0093] Furthermore, in both support components of this embodiment, the second support part is a support column with an adjustable top. In practical applications, the second support part can also take many forms, such as a support cylinder. The cylinder body of the support cylinder is fixed at a predetermined position on the support base body, and the push rod is used to support the second positioning surface of the bridge. By adjusting the extension or retraction of the push rod, the levelness of the bridge can also be adjusted.

[0094] Please refer to Figure 13 and Figure 14 The detection device 1 of the present invention is further provided with a horizontal second base 17, and a third guide rail 171 is provided on the top of the second base 17. The third guide rail 171 is perpendicular to the first guide rail 151. The support component supporting the bridge is detachably installed on the top of the third guide rail 171 through the support body. It also includes a third drive unit, which can drive the support component to move along the third guide rail 171 to move closer to or away from the detection component 13. Specifically, during detection, the support component is installed on the top of the third guide rail 171 and driven to move to a designated position close to the detection component 13 so that the detection component 13 can detect the thickness of each pad groove of the bridge. After the detection is completed, the support component is driven away from the detection component 13, and the support component and the bridge supported on the top of the support component are moved away as a whole so that other bridges to be tested and the support component can be installed on the third guide rail 171 for testing.

[0095] By setting the third guide rail 171, the bridge can be brought close to the detection component 13 when detection is required, and the support component can be driven away from the detection component 13 after the detection is completed. This avoids interference between the support component and the bridge and the detection component 13 when they are separated, and reduces the floor space of the detection device 1 of the present invention.

[0096] Specifically, in this embodiment, the third drive unit includes a third servo motor 172, a coupling 173, and a lead screw and nut transmission unit connected in sequence. A transition plate 174 is provided between the support body and the third guide rail 171. The bottom wall of the transition plate 174 is installed on the third guide rail 171, and a limit pin is provided on the top of the transition plate 174. The support body and the transition plate 174 are fixed by the limit pin. The lead screw and nut transmission unit converts the rotation of the third servo motor 172 into the horizontal movement of the support assembly along the third guide rail 171, so that the support assembly can move closer to or further away from the detection assembly 13.

[0097] After the thickness of each gasket groove of the bridge is detected, a matching elastic retaining ring is selected based on the measured thickness of the gasket groove. In order to prevent errors in the selection of elastic retaining ring, the gasket selection machine of the present invention is also equipped with a reselection device 2, which is used to test the selected spring retaining ring to avoid the selected spring retaining ring and the corresponding gasket groove being mismatched due to human error.

[0098] Please refer to Figures 20 to 22 To understand the structure of the multiple selection device 2 in the pad selection machine of the present invention. Figure 20 for Figure 8 Schematic diagram of the structure of the re-selection device 2 in the pad selector; Figure 21 for Figure 20 Left view of the multiplexing device 2; Figure 22 for Figure 20 Front view of the multiplexing device 2.

[0099] The multiplexing device 2 in this embodiment includes a base 21, which includes an upper base 211 and a lower base 212, and a connecting seat 213 connecting the upper base 211 and the lower base 212. The lower base 212 is provided with a first positioning part for supporting the spring retaining ring, specifically a lower pressure head 22. The middle part of the lower pressure head 22 is provided with a mounting hole along the axial direction. The displacement detection switch 23 is installed in the mounting hole. The detection head at the top of the displacement detection switch 23 is higher than the top wall of the lower pressure head 22 by a predetermined distance. It also includes a driving device and a second positioning part located above and opposite to the lower pressure head 22. The driving device can be a cylinder, a hydraulic cylinder, etc. Specifically, in this embodiment, the driving device is a third driving cylinder 25, and the second positioning part is the upper pressure head 24. The cylinder body of the third driving cylinder 25 is fixed. The push rod of the third drive cylinder 25 is fixedly connected to the top wall of the upper pressure head 24 via a floating joint 26. A vertical fourth guide rail 27 is provided on the side wall of the connecting seat 213 facing the upper pressure head 24. A connecting protrusion 241 is provided on the side wall of the upper pressure head 24 facing the fourth guide rail 27. The upper pressure head 24 is connected to the fourth guide rail 27 via the connecting protrusion 241. When the push rod of the third drive cylinder 25 extends or retracts, it can drive the upper pressure head 24 to move vertically along the fourth guide rail 27. When the upper pressure head 24 moves to a predetermined height, it will push the detection head at the top of the displacement detection switch 23 to move downward. The difference in distance that the upper pressure head 24 pushes the detection head of the displacement detection switch 23 to move when the top of the lower pressure head 22 supports the elastic retaining ring and when it does not support the elastic retaining ring is the thickness of the elastic retaining ring.

[0100] The testing principle of the multiplexing device 2 in this embodiment is as follows:

[0101] In the non-working state, that is, before the spring retaining ring is supported on the top of the lower pressure head 22, the upper pressure head 24 moves downward and first contacts the detection head of the displacement detection switch 23. The upper pressure head 24 continues to move downward and begins to compress the displacement detection switch 23. When the bottom wall of the upper pressure head 24 contacts the top wall of the lower pressure head 22, the position detection switch 23 is compressed by a predetermined distance, denoted by "C". In the working state, that is, when the spring retaining ring is supported on the top of the lower pressure head 22, the upper pressure head 24 moves downward and first contacts the top of the displacement detection switch 23. The upper pressure head 24 continues to move downward and begins to compress the displacement detection switch 23. When the bottom wall of the upper pressure head 24 contacts the top wall of the spring retaining ring, the position detection switch 23 is compressed by a predetermined distance, denoted by "D". The thickness of the spring retaining ring is denoted by "L", then L = CD.

[0102] At this point, the thickness of the spring retaining ring is obtained through the selection device 2. The thickness of the spring retaining ring is compared with the thickness of the corresponding gasket groove obtained through the detection device 1. If the thickness of the spring retaining ring is consistent with the thickness of the gasket groove, the selected spring retaining ring and the gasket groove can be matched. If the thickness of the spring retaining ring is inconsistent with the thickness of the gasket groove, a new spring retaining ring needs to be selected and the selection and testing are performed again to ensure that the selected spring retaining ring and the gasket groove can be matched.

[0103] In this embodiment, the selection device 2 obtains the thickness of the elastic retaining ring by measuring the difference in distance the upper pressure head 24 pushes the displacement detection switch 23 to move when the elastic retaining ring is supported or not supported at the top of the lower pressure head 22. This ensures that the selected elastic retaining ring matches the specific gasket groove and avoids human error. The push rod of the third drive cylinder 25 is connected to the upper pressure head 24 through the floating joint 26, which ensures that the upper pressure head 24 remains horizontal when pressing the elastic retaining ring or pressing the lower pressure head 22, thereby improving the detection accuracy of the selection device 2 of this invention.

[0104] In this embodiment, the displacement detection switch 23 is installed in the mounting hole of the lower pressure head 22. The thickness of the spring retaining ring is determined by the difference in the movement distance of the detection head. In practical applications, the displacement detection switch 23 can also be installed on the top of the upper pressure head 24. The difference in the downward movement distance of the upper pressure head 24 when it contacts the lower pressure head 22 or the elastic retaining ring can also be detected to determine the thickness of the spring retaining ring.

[0105] Furthermore, to ensure testing accuracy, the top wall of the lower pressure head 22 supporting the spring retaining ring and the bottom wall of the upper pressure head 24 should remain horizontal. In practical applications, the multiplexing device 2 can also take other forms, such as not setting the base 21, supporting the elastic retaining ring on the lower pressure head 22, and connecting the upper pressure head 24 through a small robot, driving the upper pressure head 24 to move vertically to press the lower pressure head 22 or the elastic retaining ring, which is also a feasible solution.

[0106] The pad selection machine of the present invention is also provided with a re-selection operation table 3, please refer to Figure 18 and Figure 19 To understand the structure of the multiplexing operation table 3 of the present invention. Figure 18 for Figure 8 A schematic diagram of the structure of the re-selection operation table 3 in the pad selection machine; Figure 19 for Figure 18 Main view of the multi-select control panel 3.

[0107] The reselection operation table 3 of the present invention is provided with an upper support table 31 and a lower support table 32. The reselection device 2 is supported on the top of the upper support table 31. Multiple anti-misalignment shafts 321 are provided on the top of the lower support table 32. After all the pad slots on the same bridge have been tested, the support assembly and the bridge supported on the support assembly are removed from the testing device 1 and placed on the top of the lower support table 32. The anti-misalignment shafts 321 correspond to the positions of each pad slot of the bridge. The elastic retaining rings corresponding to the pad slots selected according to the test results can be fitted onto the corresponding anti-misalignment shafts 321 for subsequent retesting, preventing the elastic retaining rings from being misplaced and causing the elastic retaining rings and pad slots to not correspond.

[0108] The working process of the bridge pad selection machine of the present invention is as follows:

[0109] The process of selecting an elastic retaining ring that matches the gasket groove is as follows:

[0110] First, the bridge to be tested is supported at a predetermined position on the support assembly, and the bridge is kept horizontal by adjusting the support head at the top of the support column to ensure that the bridge can be accurately positioned. The support assembly and the bridge are fixed together on the transition plate 174. The third servo motor 172 drives the support assembly to move to a predetermined position close to the detection assembly 13.

[0111] Next, the connecting platform 15 is driven to move downward by the second servo motor 162, moving it closer to the bridge; then the positioning component 14 is driven by the first servo motor 153 to reach the predetermined position, and the center position of the gasket groove is found by the dial indicator in the positioning component 14. After the positioning component 14 determines the center of the gasket groove, the second servo motor 162 drives the detection component 13 to move to the right by a predetermined distance, i.e., 150mm. At this time, the detection component 13 is coaxial with the gasket groove.

[0112] Next, the detection component 13 detects the thickness of the gasket groove. Specifically, the first drive cylinder 132 and the second drive cylinder 133 drive the detection protrusion 1342 to enter between the top and bottom walls of the gasket groove. The first drive cylinder 132 then drives the detection protrusion 1342 to move vertically between the top and bottom walls of the gasket groove. The displacement sensor 131 obtains the moving distance of the detection protrusion 1342 between the top and bottom walls of the gasket groove.

[0113] Finally, based on the movement distance of the detection protrusion 1342 measured by the displacement sensor 131, the thickness of the gasket groove for installing the elastic retaining ring is calculated, and a matching elastic retaining ring is selected. At this point, the selection of one elastic retaining ring is completed. Repeat the above steps to detect the thickness of other gasket grooves in the same bridge and select a matching elastic retaining ring.

[0114] After all the elastic retaining rings installed on the same bridge have been selected, the support assembly is removed from the bridge as a whole and supported on the lower support platform 32 of the reselection operation table 3. The selected elastic retaining rings are then fitted onto the corresponding anti-misalignment shaft 321, and the elastic retaining rings are retested.

[0115] The process of re-measuring the thickness of the selected elastic retaining ring is as follows:

[0116] The selected elastic retaining ring is supported on the top of the lower pressure head 22. The third drive cylinder 25 is activated and drives the upper pressure head 24 to move downward. When it moves to a predetermined distance, it begins to compress the detection head on the top of the displacement detection switch 23. When the bottom wall of the upper pressure head 24 moves to contact the top of the elastic retaining ring, the upper pressure head 24 stops moving. The displacement detection switch 23 obtains the moving distance of the detection head. By comparing this moving distance with the moving distance of the detection head when the upper pressure head 24 directly presses against the lower pressure head 22, the thickness of the elastic retaining ring can be obtained.

[0117] By comparing the measured thickness of the elastic retaining ring with the measured thickness of the corresponding gasket groove, it can be determined whether the selected elastic retaining ring is suitable, thus completing the re-measurement step of the elastic retaining ring thickness. At this point, the selected elastic retaining ring can be installed in each gasket groove of the Wheatstone bridge, ensuring that the elastic retaining ring matches the gasket groove.

[0118] The present invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A pad selection machine, characterized in that: The device (1) includes a detection device (1) for detecting the thickness of each gasket groove (011, 021) where the elastic retaining ring is installed on the bridge (01, 02). The detection device (1) includes a detection component (13) which is movable to move closer to or further away from each of the gasket grooves (011, 021). The detection component (13) includes a detection unit, a driving unit, and a displacement sensor (131). The detection unit includes a detection protrusion (1342). The driving unit can drive the detection protrusion (1342) into the space between the top and bottom walls of the gasket groove (011, 021) and move vertically between the top and bottom walls of the gasket groove (011, 021). The displacement sensor (131) can detect the vertical movement distance of the detection protrusion (1342). The detection device (1) further includes a positioning component (14), which has a predetermined distance from the detection component (13). The positioning component (14) can determine the center position of the gasket groove (011, 021) and is opposite to the center of the gasket groove. During detection, the detection component (13) moves the predetermined distance to be opposite to the center of the gasket groove (011, 021). The positioning component (14) and the detection component (13) are both fixed to the same connecting plate (138). The positioning component (14) includes a vertical connecting column (141) and a horizontal connecting plate (142) fixed to the bottom of the connecting column (141). The top of the connecting column (141) is fixed to the connecting plate (138) by a bearing. The connecting column (141) can rotate around the axial direction. The connecting plate (142) can magnetically attract a dial indicator. During measurement, the center of the gasket groove (011, 021) is determined by rotating the dial indicator. When the pointer of the dial indicator is relative to the zero position, the connecting column (141) is relative to the center of the gasket groove (011, 021). The detection component (13) and the positioning component (14) are moved synchronously by the predetermined distance to ensure that the detection component (13) is relative to the center of the gasket groove (011, 021). The driving unit includes a first driving unit and a second driving unit. The detection unit also includes a vertically extending connecting part. The top end of the connecting part is installed at the bottom of the second driving unit. The detection protrusion (1342) is disposed on the outer side of the bottom end of the connecting part. The first driving unit can drive the second driving unit and the detection unit to move in the vertical direction. The second driving unit can drive the detection unit to move horizontally along the second driving unit.

2. The pad selection machine according to claim 1, characterized in that: The first driving unit is a first driving cylinder (132). The first driving cylinder (132) includes a first cylinder body (1321) and a first push rod (1322). A floating joint (135) is provided at the bottom end of the first push rod (1322). The bottom end of the first push rod (1322) is connected to the top of the second driving unit through the floating joint (135). The top end of the first push rod (1322) passes through the top wall of the first cylinder body (1321) and is connected to the displacement sensor (131).

3. The pad selection machine according to claim 2, characterized in that: A guide post (136) and a guide sleeve (137) for mounting the guide post (136) are also provided between the first cylinder (1321) and the second drive unit. There is a predetermined gap between the guide post (136) and the guide sleeve (137). The first drive unit can drive the second drive unit and the detection unit to move vertically along the guide post (136).

4. The pad selection machine according to claim 1, characterized in that: The detection device (1) further includes a first base (16), a fixing component, and a driving component. The fixing component is provided with a horizontal first guide rail (151). The detection component (13) and the positioning component (14) are both installed on the first guide rail (151). The first base (16) is provided with a vertical second guide rail (161). The fixing component is installed on the second guide rail (161). The driving component includes a first driving unit and a second driving unit. The first driving unit can drive the detection component (13) and the positioning component (14) to move horizontally along the first guide rail (151). The second driving unit can drive the fixing component to move vertically along the second guide rail (161).

5. The pad selection machine according to any one of claims 1-3, characterized in that: The detection device further includes a support assembly (11, 12) for supporting and positioning the bridge (01, 02). The support assembly (11, 12) includes a support body (111, 121). The top of the support body (111, 121) is provided with a support portion for supporting and positioning the bridge (01, 02) and a clamping portion for clamping the bridge (01, 02). The support portion includes a first support portion and a second support portion for supporting the first positioning surface (013, 022) and the second positioning surface (014, 023) of the bridge (01, 02). The support head (1141, 1231) at the top of the second support portion is capable of floating in the vertical direction.

6. The pad selection machine according to claim 5, characterized in that: The detection device (1) further includes a second base (17), the second base (17) is provided with a horizontal third guide rail (171), the support body (111, 121) is detachably installed on the third guide rail (171), and also includes a third drive unit, the third drive unit is capable of driving the support body (111, 121) to move along the third guide rail (171) to move closer to or away from the detection component (13).

7. The pad selection machine according to any one of claims 1-3, characterized in that: The pad selection machine also includes a reselection device (2) for detecting the thickness of the selected elastic retaining ring. The reselection device (2) includes a first positioning part for supporting the elastic retaining ring, a second positioning part opposite to the first positioning part, and a displacement detection switch (23). The first positioning part is provided with a mounting hole along the axial direction. The displacement detection switch (23) is vertically installed in the mounting hole. The second positioning part can push the detection head of the displacement detection switch (23) to move in the vertical direction. The displacement detection switch (23) can detect the moving distance of the detection head.

8. The pad selection machine according to claim 7, characterized in that: It also includes a selection operation table (3) for supporting the selection device (2), the top of the selection operation table (3) is provided with a plurality of anti-error shafts (321), the anti-error shafts (321) correspond to the positions of the gasket grooves (011, 021) of the bridge (01, 02) supported on the top of the selection operation table (3).

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