Clearance testing device

Abstract

The utility model relates to the technical field of clearance testing, and discloses a clearance testing device which comprises a workbench, a fixing assembly is installed at the top of the workbench, and a lifting assembly is arranged at the bottom of the workbench. According to the clearance testing device, the rocker is manually rotated to drive the lead screw to rotate, and the threads of the other half sections of the lead screw are oppositely arranged from the center point, so that the two clamping plates can move relatively when the lead screw rotates, and a bearing is clamped and fixed; the clamping device is mounted oppositely by taking the connecting block as the center, so that the motor rotates to drive the transmission rod to rotate, the clamping device can be automatically rotated, the effect of automatically replacing the bearing is achieved, the arrangement of the assembly can fix the bearings with different sizes and specifications, personnel testing is facilitated, the bearing needing to be detected can be automatically replaced, and the working efficiency is improved. The working time is greatly saved, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of clearance testing technology, specifically a clearance testing device. Background Technology

[0002] Clearance testing is an important part of measuring bearing performance, involving the measurement of bearing clearance under different conditions, mainly including original clearance, installation clearance, and operating clearance. Original clearance is the clearance of the bearing in its free state; installation clearance is the clearance after the bearing is installed but not in operation; and operating clearance is the clearance of the bearing in its operating state, which is affected by temperature and load.

[0003] Clearance testing requires specialized testing instruments and consideration of the accuracy of the test force and dynamic performance. For example, the clearance measurement of spherical plain bearings requires accurate test load, but there are currently few dedicated testing instruments, and there are problems such as low accuracy of test force control. Therefore, it is necessary to adopt a method that combines theoretical analysis and experimental verification to improve the control and optimize the structure of the test force control system.

[0004] The prior art patent document CN206330526U provides a bearing clearance testing device, which includes a feeding mechanism, a conveying mechanism, a testing mechanism, and a discharging mechanism. The conveying mechanism includes a conveying channel located downstream of the feeding channel, and the width of the conveying channel is the axial height of the bearing. By setting the bearing vertically for testing, the measurement error caused by its own weight is avoided, and the measurement is more accurate.

[0005] While the aforementioned prior art bearing clearance testing device improves work efficiency by standing the bearing upright and rolling it through the conveying and testing mechanisms before finally discharging it through the discharge mechanism, thus automatically detecting clearance during the process, it suffers from several drawbacks. Firstly, it cannot be adjusted for bearings of different specifications, especially when bearing widths vary. The rolling mechanism, with its fixed width, often fails to pass through the conveying mechanism, necessitating complete disassembly and width readjustment for testing. This significantly increases working time and reduces efficiency. Therefore, we require a clearance testing device. Utility Model Content

[0006] The purpose of this utility model is to provide a clearance testing device to solve the problem that the bearing clearance testing device in the patented technology mentioned in the background art cannot be adjusted according to different specifications of bearings during use. In particular, when the bearing width is different, it is easy to fail to pass through the set transport mechanism by rolling, because the width of the transport mechanism is fixed. This requires the entire device to be disassembled and the width readjusted before testing can be performed, which greatly increases the working time and reduces the work efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A clearance testing device includes a worktable, a storage compartment on the front of the worktable, a fixing component on the top of the worktable, and a lifting component at the bottom of the worktable.

[0009] The fixing component includes a motor, the output end of which is detachably connected to a transmission rod via a coupling, and a connecting block is fixedly connected to the top of the transmission rod. A cylinder is provided on one side of the connecting block, and a fixing block is fixedly connected to one end of the cylinder. A rocker arm is provided on one side of the fixing block, and a lead screw is rotatably connected to one side of the rocker arm. A clamping plate is threadedly connected to the outer wall of the lead screw.

[0010] The lifting assembly includes a base, a first rotating shaft is mounted on the top of the base, a hydraulic cylinder is provided on one side of the first rotating shaft, a second rotating shaft is mounted on one end of the hydraulic cylinder, a slider is provided at the bottom of the second rotating shaft, a lifting frame is rotatably connected inside the second rotating shaft, and a third rotating shaft is provided on the top of the lifting frame.

[0011] Preferably, a testing mechanism is installed on the top of the workbench, and a display screen is provided on the top of the workbench.

[0012] Preferably, the motor forms a rotating structure with the connecting block via a transmission rod, and the transmission rod is installed between the motor and the connecting block.

[0013] Preferably, the connecting block forms a movable structure with the fixed block via a cylinder, and the cylinder is installed between the connecting block and the fixed block.

[0014] Preferably, the fixing block forms a rotating structure through a rocker arm and a lead screw, with one end of the lead screw passing through the fixing block, and the rocker arm forms a moving structure through the lead screw and the clamping plate.

[0015] Preferably, the base is fixed by a first rotating shaft and a hydraulic cylinder, and there are two first rotating shafts. The first rotating shafts are movable by a hydraulic cylinder and a second rotating shaft.

[0016] Preferably, the second rotating shaft forms a lifting structure with the third rotating shaft via a lifting frame, and the lifting frame is installed between the second rotating shaft and the third rotating shaft.

[0017] Compared with the prior art, the beneficial effects of this utility model are: this clearance testing device,

[0018] Firstly, this utility model includes a motor, transmission rod, connecting block, cylinder, fixing block, rocker arm, lead screw, and clamping plate. Manually rotating the rocker arm drives the lead screw to rotate. The lead screw's thread is arranged with the other half starting from the center point in opposite directions. This rotation of the lead screw causes the two clamping plates to move relative to each other, thereby clamping and fixing the bearing. Two of these devices are installed opposite each other, centered on the connecting block. The rotation of the motor drives the transmission rod, which in turn rotates the connecting block, automatically rotating the clamping device to achieve automatic bearing replacement. This assembly can fix bearings of different sizes and specifications, facilitating personnel testing and enabling automatic replacement of the bearing to be tested, greatly saving working time and improving work efficiency.

[0019] Secondly, this utility model includes a base, a first rotating shaft, a hydraulic cylinder, a second rotating shaft, a slider, a lifting frame, and a third rotating shaft. The extension and retraction of the hydraulic cylinder enables the second rotating shaft to move, while the slider assists in the movement. As the second rotating shaft moves, its rotation causes the internal lifting frame to rotate and unfold. When the lifting frame unfolds, the third rotating shaft allows it to lift the worktable, thereby adjusting the worktable height. This component allows workers to easily adjust the worktable to a suitable height for work, further improving work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the motor and cylinder structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the hydraulic cylinder and the second rotating shaft of this utility model.

[0024] In the diagram: 1. Workbench; 2. Storage compartment; 3. Fixing assembly; 301. Motor; 302. Transmission rod; 303. Connecting block; 304. Cylinder; 305. Fixing block; 306. Rocker arm; 307. Lead screw; 308. Clamping plate; 4. Lifting assembly; 401. Base; 402. First rotating shaft; 403. Hydraulic cylinder; 404. Second rotating shaft; 405. Slider; 406. Lifting frame; 407. Third rotating shaft; 5. Testing mechanism; 6. Display screen. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A clearance testing device includes a workbench 1, a storage compartment 2 on the front of the workbench 1, a fixing component 3 on the top of the workbench 1, and a lifting component 4 on the bottom of the workbench 1.

[0027] The fixed assembly 3 includes a motor 301. The output end of the motor 301 is detachably connected to a transmission rod 302 via a coupling. A connecting block 303 is fixedly connected to the top of the transmission rod 302. A cylinder 304 is provided on one side of the connecting block 303. A fixing block 305 is fixedly connected to one end of the cylinder 304. A rocker arm 306 is provided on one side of the fixing block 305. A lead screw 307 is rotatably connected to one side of the rocker arm 306. A clamping plate 308 is threadedly connected to the outer wall of the lead screw 307.

[0028] The lifting assembly 4 includes a base 401, a first rotating shaft 402 is mounted on the top of the base 401, a hydraulic cylinder 403 is provided on one side of the first rotating shaft 402, a second rotating shaft 404 is mounted on one end of the hydraulic cylinder 403, a slider 405 is provided at the bottom of the second rotating shaft 404, a lifting frame 406 is rotatably connected inside the second rotating shaft 404, and a third rotating shaft 407 is provided on the top of the lifting frame 406.

[0029] Through the above technical solution, manually rotating the rocker arm 306 can drive the lead screw 307 to rotate. The lead screw 307 is set with the other half of the thread starting from the center point in the opposite direction. When the lead screw 307 rotates, the two clamping plates 308 can move relative to each other, thereby clamping and fixing the bearing. There are two of these devices, installed opposite each other with the connecting block 303 as the center. The rotation of the motor 301 drives the transmission rod 302 to rotate, thereby causing the connecting block 303 to rotate, which can automatically rotate the clamping device and achieve the effect of automatic bearing replacement. This component can fix bearings of different sizes and specifications, which is convenient for personnel testing. Moreover, it can automatically replace the bearing to be tested, which greatly saves working time and improves work efficiency.

[0030] Specifically, a testing mechanism 5 is installed on the top of the workbench 1, and a display screen 6 is installed on the top of the workbench 1.

[0031] With the above technical solution, after the bearing is fixed by the staff using the fixing component 3, the test mechanism 5 can be used to detect the clearance. The test mechanism 5 and the display screen 6 are connected by a data transmission line, so the test data can be displayed on the display screen 6, which is convenient for the staff to observe.

[0032] Specifically, the motor 301 forms a rotating structure with the connecting block 303 via the transmission rod 302, and the transmission rod 302 is installed between the motor 301 and the connecting block 303.

[0033] Through the above technical solution, the transmission rod 302 is driven to rotate by the motor 301. At the same time as the transmission rod 302 rotates, the connecting block 303 can rotate. This makes it convenient for the bearing held on the other side of the connecting block 303 to rotate to one side of the testing mechanism 5, thereby facilitating automatic replacement and testing.

[0034] Specifically, the connecting block 303 forms a movable structure with the fixed block 305 via the cylinder 304, and the cylinder 304 is installed between the connecting block 303 and the fixed block 305.

[0035] Through the above technical solution, the cylinder 304 extends and retracts to move the fixed block 305, which makes it easier for the bearing to approach the testing mechanism 5, thus facilitating the testing.

[0036] Specifically, the fixed block 305 forms a rotating structure with the rocker arm 306 and the lead screw 307, and one end of the lead screw 307 passes through the fixed block 305. The rocker arm 306 forms a moving structure with the clamping plate 308 through the lead screw 307.

[0037] Through the above technical solution, the rocker arm 306 is manually rotated to drive the lead screw 307 to rotate. The lead screw 307 is set with the other half of the thread starting from the center point in the opposite direction. In this way, the rotation of the lead screw 307 can cause the two clamping plates 308 to move relative to each other, thereby clamping the bearing and fixing it. Moreover, there are two of these devices, which are installed on both sides of the connecting block 303, which facilitates automatic replacement.

[0038] Specifically, the base 401 forms a fixed structure with the hydraulic cylinder 403 via the first rotating shaft 402, and there are two first rotating shafts 402. The first rotating shafts 402 form a movable structure with the second rotating shaft 404 via the hydraulic cylinder 403.

[0039] Through the above technical solution, the second rotating shaft 404 is moved by the extension and retraction of the hydraulic cylinder 403, and the slider 405 can assist the movement of the second rotating shaft 404, thus facilitating the movement of the second rotating shaft 404.

[0040] Specifically, the second rotating shaft 404 forms a lifting structure with the third rotating shaft 407 via the lifting frame 406, and the lifting frame 406 is installed between the second rotating shaft 404 and the third rotating shaft 407.

[0041] Through the above technical solution, the hydraulic cylinder 403 extends and retracts to drive the second rotating shaft 404 to move. When the second rotating shaft 404 moves, it can rotate to make the lifting frame 406 rotate and unfold. When the lifting frame 406 unfolds, it can lift the worktable 1 through the connection of the third rotating shaft 407, thereby adjusting the height of the worktable 1.

[0042] Working principle: When using this clearance testing device, firstly, the hydraulic cylinder 403 is activated. The extension and retraction of the hydraulic cylinder 403 drives the second rotating shaft 404 to move. Simultaneously, the rotation of the second rotating shaft 404 causes the lifting frame 406 to rotate and unfold. When the lifting frame 406 unfolds, it lifts the worktable 1 through the connection of the third rotating shaft 407, thus adjusting the height of the worktable 1. After the height of the worktable 1 is adjusted, the bearing is first manually placed between the two clamping plates 308, and then the rocker arm 306 is manually rotated. The rotation of the rocker arm 306 drives the lead screw 30... 7 is rotated, causing the two clamping plates 308 to move relative to each other, thereby clamping and fixing the bearing. The clamping device on the other side is also set up in the same way. After fixing, the testing mechanism 5 can be started for testing. After the test is completed, the motor 301 is started. The rotation of the motor 301 drives the transmission rod 302 to rotate, causing the connecting block 303 to rotate. This allows the bearing clamped and fixed on the other side to be rotated to the testing mechanism 5 side, thereby completing the automatic replacement of the test bearing. This completes all the work. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit defined by the appended claims and their equivalents.

Claims

1. A clearance testing device, comprising a worktable (1), characterized in that: The workbench (1) has a storage compartment (2) on its front side, a fixing component (3) is installed on the top of the workbench (1), and a lifting component (4) is provided at the bottom of the workbench (1). The fixing component (3) includes a motor (301), the output end of the motor (301) is detachably connected to a transmission rod (302) via a coupling, and a connecting block (303) is fixedly connected to the top of the transmission rod (302). A cylinder (304) is provided on one side of the connecting block (303), and a fixing block (305) is fixedly connected to one end of the cylinder (304). A rocker arm (306) is provided on one side of the fixing block (305), and a lead screw (307) is rotatably connected to one side of the rocker arm (306). A clamping plate (308) is threadedly connected to the outer wall of the lead screw (307). The lifting assembly (4) includes a base (401), a first rotating shaft (402) is mounted on the top of the base (401), a hydraulic cylinder (403) is provided on one side of the first rotating shaft (402), a second rotating shaft (404) is mounted on one end of the hydraulic cylinder (403), a slider (405) is provided at the bottom of the second rotating shaft (404), a lifting frame (406) is rotatably connected inside the second rotating shaft (404), and a third rotating shaft (407) is provided on the top of the lifting frame (406).

2. The clearance testing device according to claim 1, characterized in that: A testing mechanism (5) is installed on the top of the workbench (1), and a display screen (6) is provided on the top of the workbench (1).

3. The clearance testing device according to claim 1, characterized in that: The motor (301) forms a rotating structure with the connecting block (303) via the transmission rod (302), and the transmission rod (302) is installed between the motor (301) and the connecting block (303).

4. The clearance testing device according to claim 1, characterized in that: The connecting block (303) forms a movable structure with the fixed block (305) via the cylinder (304), and the cylinder (304) is installed between the connecting block (303) and the fixed block (305).

5. The clearance testing device according to claim 1, characterized in that: The fixed block (305) forms a rotating structure through the rocker arm (306) and the lead screw (307), and one end of the lead screw (307) passes through the fixed block (305). The rocker arm (306) forms a moving structure through the lead screw (307) and the clamping plate (308).

6. The clearance testing device according to claim 1, characterized in that: The base (401) is fixed by a first rotating shaft (402) and a hydraulic cylinder (403), and there are two first rotating shafts (402). The first rotating shafts (402) are movable by a second rotating shaft (404) and a hydraulic cylinder (403).

7. The clearance testing device according to claim 1, characterized in that: The second rotating shaft (404) forms a lifting structure with the third rotating shaft (407) through the lifting frame (406), and the lifting frame (406) is installed between the second rotating shaft (404) and the third rotating shaft (407).

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