Resistance detection equipment

Abstract

The present invention relates to the technical field of bearing resistance detection, specifically a resistance detection device, including a base, a slide rail, a slider, a fixed seat, a stress plate, a clamping assembly, a drive assembly, a support assembly, an adjustment assembly and a limit switch; when the device to be tested is placed on the clamping assembly, the drive assembly is started to drive the slider to move back and forth, the clamping assembly transmits the resistance during movement to the stress plate and converts it into a resistance value through an electrical signal, and when the device to be tested is not placed horizontally, the adjustment assembly is used to adjust the support point of the device to be tested on the support assembly horizontally. The present invention places the sliding bearing of the device to be tested on the clamping assembly, fixes the sliding bearing through the clamping assembly and detects whether it is tilted, thereby accurately measuring the resistance of the sliding bearing during movement through the stress plate on the basis of uniform force on the sliding bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing resistance detection, in particular to a resistance detection device. Background Art

[0002] A sliding bearing is a mechanical component that supports rotating shafts or reciprocating parts through sliding friction. Its core structure consists of a bearing seat and a bearing shell, with a lubricating oil film forming an indirect sliding interface between them. The tightness of the sliding bearing installation directly affects the resistance during movement. Excessive or insufficient resistance can affect normal operation.

[0003] The resistance of sliding bearings during movement directly affects the output of equipment such as 3D printers. In the prior art, adaptation is generally performed through multiple manual adjustments, or resistance is measured by directly connecting moving parts through force sensors. However, manual adjustment cannot accurately control the resistance of the bearings, and there is a certain error between the bearing resistances of each device, which will cause certain errors in the production of different devices. However, when resistance is measured by direct connection through force sensors, the installation of the sensor itself will introduce additional mass, or the force may be uneven when the bearing is moved by external force, changing the original motion state of the object being measured, resulting in distorted measurement results, thereby affecting the adjustment of the bearing resistance and failing to achieve the most suitable sliding resistance value.

[0004] To this end, a resistance detection device is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a resistance detection device, which solves the problem that it is inconvenient to measure sliding bearings, resulting in the inability to ensure the stability of sliding force during measurement, affecting the measurement accuracy. The sliding bearing of the device to be tested is placed on a clamping assembly, the sliding bearing is fixed by the clamping assembly and it is detected whether it is tilted, so that the resistance of the sliding bearing during movement is accurately measured through the stress sheet on the basis of uniform force on the sliding bearing.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A resistance detection device includes a base, a slide rail, a slider, a fixed seat, a stress sheet, a clamping assembly, a drive assembly, a support assembly, an adjustment assembly and a limit switch; the slide rail and the limit switch are arranged on the base, the slider is arranged on the slide rail, the fixed seat is arranged on the slider, the stress sheet is arranged on the fixed seat, the clamping assembly is connected to the stress sheet, the support assembly is arranged on the inner wall of the base, the drive assembly is arranged on the base, the adjustment assembly is connected to the support assembly, and the drive assembly is connected to the slider; when the device to be tested is placed on the clamping assembly, the drive assembly is started to drive the slider to move back and forth left and right, the clamping assembly transmits the resistance during movement to the stress sheet and converts it into a resistance value through an electrical signal, and when the device to be tested is not placed level, the support point of the device to be tested on the support assembly is adjusted level by the adjustment assembly.

[0008] It can be seen that in the existing technology, the resistance measurement of the sliding bearing is generally carried out through multiple manual debugging, or by connecting force sensors, etc. In the process of measuring the resistance through the force sensor, it will be affected by the gravity of the sensor itself, and the axial force stability cannot be guaranteed during the test, thereby causing large errors. By placing the device to be tested on the support assembly, placing the sliding bearing part on the clamping assembly and fixing it through the clamping assembly, the clamping assembly and the adjustment assembly are used to detect whether the sliding bearing is placed horizontally, and then the adjustment assembly is used to cooperate with the support assembly to keep the device to be tested level, so as to measure the bearing resistance more accurately.

[0009] Preferably, the clamping assembly includes a clamp frame, movable clamps symmetrically arranged on both sides of the clamp frame, a J-shaped bracket arranged in the clamp frame, a force adjustment plate rotatably connected to the movable clamp, and a spring telescopic rod arranged on one side of the force adjustment plate.

[0010] In the above scheme, the sliding bearing is placed in the middle of the fixture frame. The sliding bearing will touch the movable splints on both sides, push the movable splints to move to both sides and squeeze the force adjustment plate and the spring telescopic rod. The elastic force of the spring telescopic rod is used to fix the sliding bearing, stabilize the position of the sliding bearing, and thus reduce the resistance measurement deviation caused by unstable force when the sliding bearing moves.

[0011] Preferably, the movable splint includes a clamping section and a circular section, and a rotating shaft is provided at the end of the circular section; the J-shaped bracket includes a horizontal main bracket, a limiting sub-bracket arranged on both sides of the horizontal main bracket, and a rotating groove arranged on the limiting sub-bracket.

[0012] In the above scheme, when the movable splint is subjected to the elastic force of the spring telescopic rod through the force adjustment plate, the movable splint will be displaced toward the middle of the clamp frame. At the same time, the rotating shaft will move to the rotating groove under the drive of the clamping section. The movable splint will deflect with the rotating groove as the axis, so that the two sets of movable splints are arranged at an inclined surface in the middle of the clamp frame with the bottom relative to the top close to the top when the sliding bearing of the equipment to be tested is not placed, thereby making the clamping process of the sliding bearing more stable.

[0013] Preferably, the upper half of the clamping section is provided with an anti-slip surface.

[0014] In the above scheme, after the sliding bearing is placed, it will touch the bottom of the movable splint to make it remain vertical again. At this time, the anti-slip surface will be in close contact with both sides of the sliding bearing, thereby increasing the stability of the bearing movement during resistance measurement and further ensuring the accuracy of resistance measurement.

[0015] Preferably, the middle part of the force-bearing adjustment plate is rotatably connected to the bottom of the movable splint near the side of the clamp frame; an inclination angle is set on one side of the force-bearing adjustment plate; the clamping assembly also includes a first spring arranged on the side of the force-bearing adjustment plate near the inclination angle, a pushing plate connected to the first spring, an L-shaped plate arranged at the bottom of the pushing plate, and two sets of limit blocks fixedly connected to the side of the movable splint near the force-bearing adjustment plate; the limit blocks enable the force-bearing adjustment plate to rotate at an angle of 90°.

[0016] In the above scheme, the initial state of the force-bearing adjustment plate is horizontal and is rotatably connected to the bottom of the movable splint. When sliding and clamping, the movable splint will push the L-shaped plate to rotate, so that the pushing plate loses the limit of the L-shaped plate. At this time, the pushing plate is pushed toward the inclination angle direction of the force-bearing adjustment plate by the elastic force of the first spring. The force-bearing adjustment plate rotates due to the thrust of the pushing plate until it is tightly attached to the limit block. At this time, the adjustment plate rotates 90° and is in a vertical state. At this time, the thrust of the force-bearing adjustment plate on the movable splint is uniformly directed in the direction of the sliding bearing.

[0017] Preferably, the drive assembly includes a servo motor, a synchronous pulley, a transmission belt and an idler pulley; the servo motor is fixed to the bottom of the base, the drive shaft of the servo motor is connected to the bottom of the synchronous pulley, the two ends of the transmission belt are respectively connected to the synchronous pulley and the idler pulley, and the transmission belt is fixedly connected to the bottom of the fixed seat.

[0018] In the above scheme, the servo motor is started to drive the synchronous pulley connected to the servo motor to rotate. At this time, the transmission belt is driven by the synchronous pulley. When moving, the fixed seat connected to it is driven to move back and forth by the transmission belt. At this time, the sliding bearing will transmit the resistance to the stress plate through the fixture frame, and the stress plate will convert the resistance into an electrical signal to form an accurate measurement.

[0019] Preferably, the support assembly includes a support seat arranged on the front and rear inner walls of the base, a plurality of groups of universal ball support columns symmetrically arranged on the support seat, and an electric push rod connected to the bottom of the universal ball support column.

[0020] In the above scheme, the device under test is placed on the support seat and assisted by a universal ball support column. When the device under test is not placed level or there is an angle between the support position of the device under test and the sliding bearing, the support angle of the device under test can be adjusted by an electric push rod, thereby adjusting the sliding bearing to maintain a horizontal position, thereby further ensuring the accuracy of the resistance measurement.

[0021] Preferably, the adjustment assembly includes a horizontal plate arranged inside the clamp frame, a balance rod arranged on one side of the movable splint, and an inclination sensor arranged in the middle of the horizontal plate; the universal ball support columns are evenly distributed on the support seat, and the electric push rod is arranged in the support seat.

[0022] In the above scheme, when the adjustment component is placed on both sides of the sliding bearing through the horizontal plate and is not level, the clamp frame drives the sliding bearing to move and generates a component force, thereby affecting the measurement of the sliding bearing's own resistance. By setting the horizontal plate and the balance rod through the adjustment component, when the sliding bearing is deflected or not level, the displacement of the movable splints on both sides will be different.

[0023] Preferably, the balancing rod includes a rod body, a reset telescopic rod respectively connected to the rod body and the inner wall of the clamp frame, a sliding groove arranged at the end of the rod body, a balancing ball arranged at the sliding groove, and a top touch plate fixedly connected to the end of the rod body.

[0024] In the above scheme, when the balance rod is touched by the movable splint, the balance rod will squeeze the reset telescopic rod, and at the same time the end of the rod will slide toward the end of the horizontal plate. At this time, if the displacement distances of the movable splints on both sides are different, it means that there is an offset in the placement position of the sliding bearing. At this time, the balance balls on both sides will cause the horizontal plate to deflect. At this time, the inclination sensor detects that the horizontal plate is tilted and transmits a signal to control the electric push rod to continue to perform horizontal adjustment on the support point of the equipment to be tested.

[0025] Preferably, the limit switch is arranged on one side of the end of the slide rail, and when the slider touches the limit switch, the servo motor stops or moves in the reverse direction.

[0026] In the above scheme, the limit switch is fixed on one side of the end of the slide rail. When the clamping component is driven by the driving component to perform resistance detection, it can first move to one end of the limit switch, and then start the formal detection to ensure the detection time and stability of the detection, and prevent the movement instability caused by the end turning.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. By setting up a clamping assembly, the sliding bearing is placed on the clamping assembly, and the sliding bearing is placed on the clamping assembly more conveniently and smoothly through the inclined movable clamps on both sides. After the placement is completed, the movable clamps are also used to fix the two sides of the sliding bearing, so that when the clamping assembly and the sliding bearing are driven to move by the driving assembly, the resistance of the sliding bearing during movement can be tested more stably and accurately through the stress sheet.

[0029] 2. The present invention provides a movable splint, a force adjustment plate and a J-shaped bracket, so that the sliding bearing will first touch the bottom of the movable splint during installation. The movable splint is rotated to a vertical state through the J-shaped bracket and rotated at the same time through the force adjustment plate, thereby ensuring the stable installation of the sliding bearing and uniform force on the surface when fixed, further improving the stability of the sliding bearing resistance measurement.

[0030] 3. The present invention sets a support component and an adjustment component. If the sliding bearing is horizontally tilted when installed or the sliding bearing and the support of the device to be tested cause tilting, the movable splints on both sides are squeezed and displaced by different distances. At the same time, the movable splints squeeze the balance bar displacement by different distances. At this time, the horizontal plate is squeezed by the balance ball on the balance bar at different potential energies, and the horizontal plate will tilt. The inclination sensor transmits a signal to the electric push rod according to the change of the horizontal plate angle, thereby adjusting the horizontal angle of the device to be tested to keep the bearing level. In addition, during the resistance test, if the sliding bearing position and the middle part of the fixture frame are horizontally displaced due to inertia or other reasons, the displacement force will be transmitted to the balance bar through the movable splint. At this time, the balance bar will generate a certain resistance to the displacement of the movable splint, and after the displacement, the movable splint on the other side will compensate for the displacement in the same direction by a certain amount through the horizontal plate and the balance plate, thereby ensuring the stability of the sliding bearing fixation and further maintaining the accuracy of the resistance measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the resistance detection equipment;

[0032] Figure 2 It is a schematic side view of the overall structure of the resistance detection equipment;

[0033] Figure 3 This is a schematic diagram of the internal structure of the clamping component of the resistance detection device;

[0034] Figure 4 For resistance testing equipment Figure 3 A in the middle is an enlarged schematic diagram;

[0035] Figure 5 For resistance testing equipment Figure 3 The enlarged schematic diagram of point B in the middle;

[0036] Figure 6 It is a schematic diagram of the overall structure of the resistance detection equipment from bottom view;

[0037] Figure 7 For resistance testing equipment Figure 6 Enlarged schematic diagram at point C in the middle;

[0038] Figure 8 A schematic diagram of another state of the clamping component of the resistance detection device;

[0039] Figure 9 This is a schematic diagram of the support assembly structure of the resistance detection equipment;

[0040] Figure 10 Resistance testing equipment Figure 8 Enlarged schematic diagram at point D in the middle.

[0041] Figure: 1, base; 2, slide rail; 3, slider; 4, fixed seat; 5, stress plate; 6, clamping assembly; 61, clamp frame; 62, movable splint; 621, clamping section; 621a, anti-slip surface; 622, circular section; 622a, rotating shaft; 63, J-shaped bracket; 631, horizontal main bracket; 632, limit auxiliary bracket; 632a, rotating groove; 64, force adjustment plate; 641, tilt angle; 65, spring telescopic rod; 66, first spring; 67, push Plate; 68. L-shaped plate; 69. Limit block; 7. Drive assembly; 71. Servo motor; 72. Synchronous pulley; 73. Drive belt; 74. Idle pulley; 8. Support assembly; 81. Support seat; 82. Universal ball support column; 83. Electric push rod; 9. Adjustment assembly; 91. Level plate; 92. Balance bar; 921. Rod body; 922. Reset telescopic rod; 923. Sliding groove; 924. Balance ball; 925. Top touch plate; 93. Inclination sensor; 10. Limit switch. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may obtain other implementation methods without violating the connotation of the present invention and without expending creative work. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] See also Figures 1 to 10 , the present invention provides the following technical solutions:

[0045] A resistance detection device includes a base 1, a slide rail 2, a slider 3, a fixed seat 4, a stress piece 5, a clamping assembly 6, a driving assembly 7, a supporting assembly 8, an adjusting assembly 9 and a limit switch 10; the slide rail 2 and the limit switch 10 are arranged on the base 1, the slider 3 is arranged on the slide rail 2, the fixed seat 4 is arranged on the slider 3, the stress piece 5 is arranged on the fixed seat 4, the clamping assembly 6 is connected to the stress piece 5, the supporting assembly 8 is arranged on the inner wall of the base 1, the driving assembly 7 is arranged on the base 1, the adjusting assembly 9 is connected to the supporting assembly 8, the driving assembly 7 is connected to the slide rail 2, the fixed seat 4 is arranged on the slider 3, the stress piece 5 is arranged on the fixed seat 4, the clamping assembly 6 is connected to the stress piece 5, the supporting assembly 8 is arranged on the inner wall of the base 1, the driving assembly 7 is arranged on the base 1, the adjusting assembly 9 is connected to the supporting assembly 8, and the driving assembly 7 is connected to the slide rail 2. Block 3 is connected; when the device to be tested is placed on the clamping component 6, the driving component 7 is started to drive the slider 3 to move back and forth. The clamping component 6 transmits the resistance during movement to the stress piece 5 and converts it into a resistance value through an electrical signal. When the device to be tested is not placed horizontally, the support point of the device to be tested on the supporting component 8 is adjusted horizontally through the adjusting component 9. The clamping component 6 and the adjusting component 9 cooperate to detect whether the sliding bearing is placed horizontally. Then, the adjusting component 9 cooperates with the supporting component 8 to keep the device to be tested level, so as to measure the bearing resistance more accurately.

[0046] As an embodiment of the present invention, refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The clamping assembly 6 includes a clamp frame 61, movable splints 62 symmetrically arranged on both sides of the clamp frame 61, a J-shaped bracket 63 arranged in the clamp frame 61, a force adjustment plate 64 rotatably connected to the movable splint 62, and a spring telescopic rod 65 arranged on one side of the force adjustment plate 64; the sliding bearing is placed in the middle of the clamp frame 61, and the sliding bearing will touch the movable splints 62 on both sides, pushing the movable splint 62 to move to both sides and squeeze the force adjustment plate 64 and the spring telescopic rod 65. The elastic force of the spring telescopic rod 65 fixes the sliding bearing, stabilizes the position of the sliding bearing, and thus reduces the resistance measurement deviation caused by unstable force when the sliding bearing moves. In this embodiment, the movable splint 62, the force adjustment plate 64 and the J-shaped bracket 63 can be symmetrically arranged along the clamp frame 61 on the other side of the clamp frame 61, so that the movable splint 62 is connected to the inner wall of the clamp frame 61 on the side close to the stress sheet 5, thereby making the fixing of the sliding bearing on the clamping assembly 6 more stable.

[0047] It should be noted that the end of the spring telescopic rod 65 can be in close contact with the force adjustment plate 64 or connected via a ball hinge.

[0048] As an embodiment of the present invention, refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4The movable splint 62 includes a clamping section 621 and a circular section 622, and a rotating shaft 622a is provided at the end of the circular section 622; the J-shaped bracket 63 includes a horizontal main bracket 631, a limiting sub-bracket 632 arranged on both sides of the horizontal main bracket 631, and a rotating groove 632a provided on the limiting sub-bracket 632; when the movable splint 62 is subjected to the elastic force of the spring telescopic rod 65 through the force adjustment plate 64, the movable splint 62 will move toward the middle of the clamp frame 61, and at the same time, the rotating shaft 622a moves to the rotating groove 632a under the drive of the clamping section 621, and the movable splint 62 will deflect with the rotating groove 632a as the axis, so that the two sets of movable splints 62 are arranged at the bottom relative to the top of the middle part of the clamp frame 61 when the sliding bearing of the equipment to be tested is not placed, thereby making the clamping process of the sliding bearing more stable.

[0049] As an embodiment of the present invention, refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The upper part of the clamping section 621 is provided with an anti-slip surface 621a; after the sliding bearing is placed, it will touch the bottom of the movable clamping plate 62 to make it remain vertical again. At this time, the anti-slip surface 621a will be in close contact with both sides of the sliding bearing, thereby increasing the stability of the bearing movement during resistance measurement and further ensuring the accuracy of resistance measurement.

[0050] As an embodiment of the present invention, refer to Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 10 , the middle part of the force-adjusting plate 64 is rotatably connected to the bottom of the movable splint 62 near the side of the clamp frame 61; the force-adjusting plate 64 is provided with an inclination angle 641 on one side; the clamping assembly 6 also includes a first spring 66 provided on the side of the force-adjusting plate 64 near the inclination angle 641, a pushing plate 67 connected to the first spring 66, an L-shaped plate 68 provided at the bottom of the pushing plate 67, and two sets of limit blocks 69 fixedly connected to the side of the movable splint 62 near the force-adjusting plate 64; the limit blocks 69 allow the force-adjusting plate 64 to rotate at an angle The force-adjusting plate 64 is initially horizontal and is connected to the bottom of the movable splint 62 for rotation. When the sliding is clamped, the movable splint 62 will push the L-shaped plate 68 to rotate, so that the pushing plate 67 loses the limit of the L-shaped plate 68. At this time, the pushing plate 67 is pushed in the direction of the inclination angle 641 of the force-adjusting plate 64 by the elastic force of the first spring 66. The force-adjusting plate 64 is pushed by the pushing plate 67 to rotate until it is tightly attached to the limit block 69. At this time, the adjustment plate rotates 90° and is in a vertical state. At this time, the movable splint 62 is pushed by the force-adjusting plate 64 as a uniform force in the direction of the sliding bearing.

[0051] It should be noted that, referring to Figure 7 The force-adjusting plate 64 is connected to the movable splint 62 through a torsion spring, and the rotation direction is counterclockwise. The L-shaped plate 68 is rotationally connected to the clamp frame 61 through a torsion spring, and the rotation direction is that the end rotates toward the side of the movable splint 62. When not measuring, the L-shaped plate 68 will limit the push plate 67 to move toward the force-adjusting plate 64 after being rotated by the torsion spring. The torsion spring force connected to the L-shaped plate 68 is always greater than the elastic force of the first spring 66, and the elastic force of the first spring 66 is always greater than the elastic force of the torsion spring connected to the force-adjusting plate 64.

[0052] As an embodiment of the present invention, refer to Figure 1 、 Figure 2 and Figure 3 The drive assembly 7 includes a servo motor 71, a synchronous pulley 72, a transmission belt 73 and an idler pulley 74; the servo motor 71 is fixed to the bottom of the base 1, the drive shaft of the servo motor 71 is connected to the bottom of the synchronous pulley 72, the two ends of the transmission belt 73 are respectively connected to the synchronous pulley 72 and the idler pulley 74, and the transmission belt 73 is fixedly connected to the bottom of the fixed seat 4; the servo motor 71 is started to drive the synchronous pulley 72 connected to the servo motor 71 to rotate, and at this time, the transmission belt 73 is driven by the synchronous pulley 72. When moving, the fixed seat 4 connected thereto is driven to move back and forth through the transmission belt 73. At this time, the sliding bearing transmits the resistance to the stress sheet 5 through the fixture frame 61, so that the resistance is converted into an electrical signal by the stress sheet 5 to form an accurate measurement; in this embodiment, the drive assembly 7 can be driven by other existing technologies such as a reducer and a control module. A position sensor and a detection module can be set in the drive assembly 7 to control the drive. If high-precision drive is required, an encoder and a feedback module need to be set in the drive assembly 7 to control the drive accuracy and maintain the accuracy of the movement of the slider 3 and the fixed seat 4.

[0053] As an embodiment of the present invention, refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 9 The support assembly 8 includes a support seat 81 arranged on the front and rear inner walls of the base 1, several groups of universal ball support columns 82 symmetrically arranged on the support seat 81, and an electric push rod 83 connected to the bottom of the universal ball support column 82; the device to be tested is placed on the support seat 81 and assisted by the universal ball support column 82. When the device to be tested is placed unevenly or there is an angle between the support position of the device to be tested and the sliding bearing, the support angle of the device to be tested can be adjusted by the electric push rod 83, so as to adjust the sliding bearing to maintain a horizontal position, thereby further ensuring the accuracy of the resistance measurement.

[0054] As an embodiment of the present invention, refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 10 The adjustment component 9 includes a horizontal plate 91 arranged inside the clamp frame 61, a balance rod 92 arranged on one side of the movable splint 62, and an inclination sensor 93 arranged in the middle of the horizontal plate 91; the universal ball support columns 82 are evenly distributed on the support seat 81, and the electric push rod 83 is arranged in the support seat 81; the adjustment component 9 is placed on both sides of the sliding bearing through the horizontal plate 91. When it is not level, the clamp frame 61 drives the sliding bearing to move and generates a component force, thereby affecting the measurement of the sliding bearing's own resistance. By setting the horizontal plate 91 and the balance rod 92 by the adjustment component 9, when the sliding bearing is deflected or not level, the displacement of the movable splint 62 on both sides will be different.

[0055] It should be noted that, in this embodiment, four groups of universal ball support columns 82 are provided to respectively support the fulcrums at the four corners of the component to be tested.

[0056] As an embodiment of the present invention, refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 10 The balance rod 92 includes a rod body 921, a reset telescopic rod 922 connected to the rod body 921 and the inner wall of the clamp frame 61 respectively, a sliding groove 923 arranged at the end of the rod body 921, a balancing ball 924 arranged at the sliding groove 923, and a top contact plate 925 fixedly connected to the end of the rod body 921; when the balance rod 92 is touched by the movable splint 62, the balance rod 92 will squeeze the reset telescopic rod 922, and at the same time, the end of the rod body 921 will slide toward the end of the horizontal plate 91. At this time, if the displacement distances of the movable splints 62 on both sides are different, it means that there is an offset in the placement position of the sliding bearing. At this time, the balancing balls 924 on both sides will cause the horizontal plate 91 to deflect. At this time, the inclination sensor 93 detects that the horizontal plate 91 is tilted and transmits a signal to control the electric push rod 83 to continue to perform horizontal adjustment at the support point of the equipment to be tested.

[0057] It should be noted that the balancing ball 924 is slidably connected to the sliding groove 923 through the sliding rod, the middle part of the horizontal plate 91 is rotatably connected to the clamp frame 61, and when the horizontal plate 91 is horizontal, the balancing ball 924 has a movable margin in the sliding groove 923 that can move up and down.

[0058] As an embodiment of the present invention, refer to Figure 1 、 Figure 2 and Figure 3The limit switch 10 is set on one side of the end of the slide rail 2. When the slider 3 touches the limit switch 10, the servo motor 71 stops or moves in the opposite direction; the limit switch 10 is fixed on one side of the end of the slide rail 2. When the clamping component 6 is driven by the driving component 7 to perform resistance detection, it can first move to one end of the limit switch 10, and then start the formal detection to ensure the detection time and the stability of the detection, and prevent the movement instability caused by the end turning.

[0059] Working principle: Place the sliding bearing in the fixture frame 61 and fix the sliding bearing through the movable splint 62. At the same time, the movable splint 62 touches the balance rod 92. The positions of the two sets of balance rods 92 and the balance balls 924 affect the inclination of the horizontal plate 91. The inclination of the horizontal plate 91 is detected by the inclination sensor 93 to detect whether the sliding bearing is horizontal. If it is not horizontal, it is adjusted through the support component 8; then the driving component 7 is started to drive the slider 3 to reciprocate left and right. On the basis of uniform force on the sliding bearing, the stress sheet 5 is used to accurately measure the resistance of the sliding bearing during movement.

[0060] Specifically, refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 8 and Figure 10 First, place the device under test on four sets of universal ball support columns 82 at the same horizontal height, place the sliding bearing part of the device under test downward, and place the fixture frame 61 under the sliding bearing, so that when the device under test is placed, the sliding bearing is also placed on the fixture frame 61. Then the sliding bearing will gradually squeeze the clamping sections 621 of the movable clamping plates 62 on both sides and move to both sides, that is, move into the fixture frame 61. Figure 4 and Figure 10 As shown, at this time, the movable splint 62 will move along the rotating groove 632a under the limit of the rotating groove 632a through the rotating shaft 622a connected to the circular segment 622, referring to Figure 4 As shown, the rotation groove 632a is divided into a curved area on the left and a flat area on the right. When the bottom of the movable splint 62 is squeezed into the inside of the clamp frame 61, the rotating shaft 622a cannot continue to move to the left of the rotation groove 632a, and will move to the position of the flat area of ​​the rotation groove 632a. At this time, the clamping section 621 of the movable splint 62 will become a vertical state. In this process, refer to Figure 8 and Figure 10 , the movable splint 62 will drive the force adjustment plate 64 to move to both sides at the same time, refer to Figure 4 and Figure 7At this time, the movable splint 62 will squeeze the L-shaped plate 68 to both sides, and the L-shaped plate 68 will rotate around the connection point with the clamp frame 61, thereby gradually releasing the limit of the push plate 67. At this time, the push plate 67 can move toward the force adjustment plate 64 under the elastic force of the first spring 66, and the push plate 67 will squeeze the inclination angle 641 of the force adjustment plate 64. Figure 7 At this time, the force-bearing adjustment plate 64 will rotate clockwise until the force-bearing adjustment plate 64 rotates 90°, at which time the force-bearing adjustment plate 64 will touch the limit block 69. At this time, the force-bearing adjustment plate 64 is in a vertical state, that is, the thrust applied by the spring telescopic rod 65 through the force-bearing adjustment plate 64 is the horizontal thrust of the force-bearing adjustment plate 64 on the bottom of the clamping section 621, that is, the stress of only the lower half of the clamping section 621 tightly against the sliding bearing, which is transformed into a force uniformly applied in the vertical direction of the force-bearing adjustment plate 64 toward the sliding bearing. At this time, the clamping section 621 is subjected to a uniform vertical stress of the force-bearing adjustment plate 64, which corresponds to the contact surface between the clamping section 621 and the sliding bearing, thereby uniformly clamping the entire clamping section 621 tightly against the sliding bearing. At this time, the anti-slip surface 621a will also be in close contact with the sliding bearing, thereby fixing the sliding bearing and keeping it stable during the resistance test.

[0061] The slider 3 is driven by the driving component 7 to perform resistance detection, and the servo motor 71 is started. The driving shaft of the servo motor 71 is connected to the synchronous pulley 72 so that the servo motor 71 drives the synchronous pulley 72 to rotate, and drives the transmission belt 73 through the synchronous pulley 72. The transmission belt 73 is fixedly connected to the bottom of the fixed seat 4 to drive the fixed seat 4 to move back and forth. First, the slider 3 is driven to move on the slide rail 2 through the fixed seat 4 until the slider 3 touches the limit switch 10, thereby starting resistance detection. When the fixed seat 4 moves, the sliding bearing will be driven to move through the clamp frame 61. The clamp frame 61 transmits the resistance to the stress plate 5, and the stress plate 5 converts the resistance into an electrical signal to form an accurate measurement.

[0062] It should be noted that the bottom of the fixture 61 remains in close contact with the stress plate 5. During resistance measurement, the sliding bearing is driven to move, transmitting resistance to the stress plate 5. In this embodiment, the bottom of the fixture 61 wraps around both sides of the end of the stress plate 5, and the bottom of the fixture 61 is mounted on the fixed base 4. The two sides of the stress plate 5 are closely attached to the fixture 61, thus achieving accurate resistance measurement. This structure effectively isolates vertical and lateral interference forces; the stress plate 5 converts the resistance it receives into an electrical signal, thereby accurately measuring the sliding bearing resistance.

[0063] The size and shape of the fixture frame 61 can be adjusted according to the size of the sliding bearing of the device to be tested.

[0064] Reference Figure 6 、 Figure 7 and Figure 8When the sliding bearing is not placed horizontally, the horizontal plate 91 in the adjustment component 9 will tilt due to the different displacements of the movable splint 62. When the movable splint 62 is clamped, the rod body 921 will be pushed to move through the top contact plate 925. Since the movable splint 62 is squeezed by the sliding bearing, if the sliding bearing is tilted during installation, the displacements of the movable splints 62 on both sides will be different. At this time, the displacements of the rod body 921 driven by the movable splint 62 are also different, so the distances between the balancing balls 924 on both sides and the middle of the horizontal plate 91 are different. At this time, the horizontal plate 91 is tilted due to the lever principle under the pressure of the balancing balls 924. The inclination sensor 93 detects the tilt and transmits a signal to the electric push rod 83. The electric push rod 83 adjusts the support point of the device to be tested on the support component 8. By adjusting the overall inclination of the device to be tested, the sliding bearing is kept in a horizontal position, further ensuring the accuracy of the resistance measurement. At the same time, during the movement of the sliding bearing, if horizontal displacement occurs due to external forces such as inertia, the movable splint 62 will transmit the displacement force to the balance bar 92. The balance bar 92 will generate resistance to the displacement of the movable splint 62, and drive the balance ball 924 on the other side of the balance bar 92 to move through the horizontal plate 91. At this time, affected by the gravity of the balance ball 924 itself and the limitation of the displacement of the balance ball 924 by the sliding groove 923, the displacement of the balance bar 92 and the movable splint 62 is resisted and limited, thereby ensuring the stability of the sliding bearing fixation.

[0065] It should be noted that during installation, the inclination sensor 93 detects the inclination angle of the horizontal plate 91. If it exceeds 2 seconds, the inclination angle is calculated and transmitted to the processor. The processor converts the calculated inclination angle into the displacement of the electric push rod 83 and transmits the signal to the electric push rod 83. Each group of electric push rods 83 is connected to a group of universal ball support columns 82 and the horizontal heights of the electric push rods 83 on the same side of the sliding bearing axis are kept consistent. By controlling the displacement of the two groups of electric push rods 83 on the same side, the height of the support point of the equipment to be tested is changed, and the inclination angle of the sliding bearing axis is balanced.

[0066] The above embodiments are only used to illustrate some examples of the implementation of the technical solution of the present invention and are not intended to limit the implementation methods. The present invention can be understood in more detail with reference to the embodiments. Those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A resistance detection device, characterized in that: The invention comprises a base (1), a slide rail (2), a slider (3), a fixed seat (4), a stress piece (5), a clamping assembly (6), a driving assembly (7), a supporting assembly (8), an adjusting assembly (9) and a limit switch (10); the slide rail (2) and the limit switch (10) are arranged on the base (1), the slider (3) is arranged on the slide rail (2), the fixed seat (4) is arranged on the slider (3), the stress piece (5) is arranged on the fixed seat (4), the clamping assembly (6) is connected to the stress piece (5), and the supporting assembly (8) is arranged on the base. (1) On the inner wall, the driving component (7) is arranged on the base (1), the adjusting component (9) is connected to the supporting component (8), and the driving component (7) is connected to the slider (3); when the device to be tested is placed on the clamping component (6), the driving component (7) is started to drive the slider (3) to move back and forth, and the clamping component (6) transmits the resistance during movement to the stress piece (5) and converts it into a resistance value through an electrical signal. When the device to be tested is not placed horizontally, the adjusting component (9) is used to adjust the support point of the device to be tested on the supporting component (8) to a horizontal level; The clamping assembly (6) includes a clamp frame (61), movable clamping plates (62) symmetrically arranged on both sides of the clamp frame (61), a J-shaped bracket (63) arranged in the clamp frame (61), a force adjustment plate (64) rotatably connected to the movable clamping plate (62), and a spring telescopic rod (65) arranged on one side of the force adjustment plate (64); The movable splint (62) includes a clamping section (621) and a circular section (622), and a rotating shaft (622a) is provided at the end of the circular section (622); the J-shaped bracket (63) includes a horizontal main bracket (631), a position-limiting auxiliary bracket (632) provided on both sides of the horizontal main bracket (631), and a rotating groove (632a) provided on the position-limiting auxiliary bracket (632); The upper half of the clamping section (621) is provided with an anti-slip surface (621a); The middle portion of the force-adjusting plate (64) is rotatably connected to the bottom of the movable splint (62) near the clamp frame (61); an inclination angle (641) is provided on one side of the force-adjusting plate (64); the clamping assembly (6) further comprises a first spring (66) provided on the side of the force-adjusting plate (64) near the inclination angle (641), a pushing plate (67) connected to the first spring, an L-shaped plate (68) provided at the bottom of the pushing plate (67), and two sets of limit blocks (69) fixedly connected to the side of the movable splint (62) near the force-adjusting plate (64); the limit blocks (69) enable the force-adjusting plate (64) to rotate at an angle of 90°.

2. The resistance detection device according to claim 1, characterized in that: The driving assembly (7) comprises a servo motor (71), a synchronous pulley (72), a transmission belt (73) and an idler pulley (74); the servo motor (71) is fixed to the bottom of the base (1); the driving shaft of the servo motor (71) is connected to the bottom of the synchronous pulley (72); the two ends of the transmission belt (73) are respectively connected to the synchronous pulley (72) and the idler pulley (74); and the transmission belt (73) is fixedly connected to the bottom of the fixed base (4).

3. The resistance detection device according to claim 2, characterized in that: The support assembly (8) comprises a support seat (81) arranged on the front and rear inner walls of the base (1), a plurality of groups of universal ball support columns (82) symmetrically arranged on the support seat (81), and an electric push rod (83) connected to the bottom of the universal ball support column (82).

4. The resistance detection device according to claim 3, characterized in that: The adjustment assembly (9) includes a horizontal plate (91) arranged inside the clamp frame (61), a balance rod (92) arranged on one side of the movable clamp (62), and an inclination sensor (93) arranged in the middle of the horizontal plate (91); the universal ball support columns (82) are evenly distributed on the support base (81), and the electric push rod (83) is arranged in the support base (81).

5. The resistance detection device according to claim 4, characterized in that: The balancing rod (92) comprises a rod body (921), a resetting telescopic rod (922) respectively connected to the rod body (921) and the inner wall of the clamp frame (61), a sliding groove (923) provided at the end of the rod body (921), a balancing ball (924) provided at the sliding groove (923), and a top touch plate (925) fixedly connected to the end of the rod body (921).

6. The resistance detection device according to any one of claims 4 or 5, characterized in that: The limit switch (10) is arranged on one side of the end of the slide rail (2), and when the slider (3) touches the limit switch (10), the servo motor (71) stops or moves in the reverse direction.

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