A crane bearing vibration measuring device and a measuring method thereof

Abstract

The invention discloses a crane bearing vibration measuring device and a measuring method thereof, which relates to the field of bearing detection, and comprises a mounting seat, a main shaft box is fixedly mounted on the top of the mounting seat, and the output end of the main shaft box is drivingly connected with an output shaft, and a placement shaft is installed in the output shaft in a clamping manner, the placement shaft is composed of a mounting head and a shaft body fixedly connected with the mounting head, and the outer ring of the shaft body is movably sleeved with a crane bearing, an extension plate is slidably connected to the top of the main shaft box, and a vibration sensor is embedded and installed at the end of the extension plate, a mounting platform is movably connected to the other side of the top of the mounting seat, and a telescopic rod is fixedly connected to the top of the mounting platform, and a top block is fixedly connected to the end of the telescopic rod, and the top block supports the side wall of the crane bearing. The invention facilitates the extraction of the placement shaft, so as to facilitate the installation of placement shafts with different shaft diameters, can be used for vibration testing of crane bearings with different inner ring diameters, and interference can be ignored, so as to ensure the accuracy of detection.

Description

Technical Field

[0001] The invention relates to the field of bearing detection, and in particular to a crane bearing vibration measuring device and a measuring method thereof. Background Art

[0002] Hoisting and transport machinery (hereinafter referred to as crane) is a multi-action machine that can perform vertical lifting and horizontal transport of heavy objects. Crane bearings are an important part of cranes. They bear the functions of bearing and rotation. There are many types of crane bearings, including: spherical roller bearings, full-component cylindrical roller bearings, tapered roller bearings and slewing bearings, etc. These crane bearings are mainly used in the gearbox, walking wheel, crane, lifting device, luffing mechanism and slewing mechanism of the crane. Crane bearings can withstand the huge weight applied by the crane, and reduce friction and resistance through the rolling of the rolling body to ensure the smooth operation of the crane. When qualified crane bearings leave the factory, the crane bearings can withstand various forces and vibrations in the operation of the crane to ensure the safety and stability of the crane.

[0003] However, during long-term use, the inner ring diameter of the crane bearing changes due to wear or due to improper assembly, which causes the vibration of the crane bearing during operation to increase, aggravating the deformation of the crane bearing and reducing the service life of the crane bearing.

[0004] The existing crane bearing vibration test methods mainly use observation method and probe method. Among them: the observation method mainly uses naked eye observation to determine whether the crane bearing is beating, which is prone to subjective errors and has low accuracy. The probe method uses a dedicated vibration sensor installed at the crane bearing position on the crane. However, during the operation of the crane, other mechanisms will also vibrate, which will interfere with the vibration measurement of the crane bearing, making it difficult to ensure the accuracy of the detection. Summary of the invention

[0005] The purpose of the present invention is to provide a crane bearing vibration measuring device and a measuring method thereof, which can be used for vibration testing of crane bearings with different inner ring diameters, and the interference can be ignored, thereby ensuring the accuracy of detection.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A crane bearing vibration measuring device, comprising a mounting seat, a spindle box is fixedly mounted at one side position of the top of the mounting seat, and the output end of the spindle box is drivingly connected with an output shaft, and a placement shaft is clamped and mounted inside the output shaft, the placement shaft is composed of a mounting head and a shaft body fixedly connected to the mounting head, and the outer ring of the shaft body is movably sleeved with a crane bearing, an extension plate is slidably connected to the top of the spindle box, and a vibration sensor is embedded and mounted at the end of the extension plate, wherein the probe of the vibration sensor contacts the outer wall of the crane bearing, a mounting platform is movably connected to the other side of the top of the mounting seat, and a telescopic rod is fixedly connected to the top of the mounting platform, and a top block is fixedly connected to the end of the telescopic rod, wherein the top block supports the side wall of the crane bearing;

[0008] Also includes:

[0009] The torsion assembly includes a mounting groove provided inside the output shaft, and the mounting groove is matched with the mounting head for installation. A cavity is provided inside the output shaft, and a screw is rotatably connected inside the cavity, and one end of the screw extends upward into the rotating groove, and a top plate is fixedly connected to the end of the screw rod body located inside the rotating groove, and the top plate rotates inside the rotating groove, and an open matching groove is provided inside the top plate, and the matching groove matches the end of the matching rod, and the screw can be driven to rotate when the matching rod is rotated, and the matching rod can also be removed and stored separately;

[0010] The snap-fit ​​installation assembly includes a moving block threadedly connected to the outer ring of the screw, and a snap-fit ​​block is arranged parallel to the moving block, and the snap-fit ​​block matches the snap-fit ​​groove arranged inside the installation head, the moving block and the snap-fit ​​block are respectively provided with a first notch and a second notch, and an inclined plate is rotatably connected between the first notch and the second notch through a short rod, the side wall of the moving block is fixedly connected to the limiting block, and the limiting block moves inside the limiting groove, the limiting groove is connected to the cavity, the two side walls of the snap-fit ​​block are fixedly connected to the mounting blocks, and the mounting blocks move inside the corresponding grooves, and the grooves are also connected to the cavity, thereby ensuring the stable movement of the snap-fit ​​block.

[0011] Preferably, the outer ring of the screw is provided with two sections of symmetrical threads with opposite thread directions, and each section of the thread is threadedly connected with a moving block, the two moving blocks are symmetrically arranged up and down, and first notches are opened at the symmetrical two side positions of the moving blocks, the two first notches respectively correspond to the second notches arranged inside the locking blocks on both sides, and the rotation of the screw drives the moving blocks threadedly connected to the two threads of the outer ring of the screw to move towards or away from each other.

[0012] Preferably, the matching rod is in a "T" shape, and the "T"-shaped end of the matching rod matches the matching groove, so that the screw rod can be driven to rotate when the matching rod is matched with the matching groove and the matching rod is rotated.

[0013] Preferably, a short rod is rotatably connected to the inner wall of each first notch, and two short rods symmetrically arranged up and down are rotatably connected to the inner wall of each second notch, and an inclined plate is fixedly sleeved between the outer ring of the short rod arranged inside the upper moving block and the outer ring of the short rod in the upper position of the locking block, and an inclined plate is fixedly sleeved between the outer ring of the short rod arranged inside the lower moving block and the outer ring of the short rod in the lower position of the locking block, the inclined plate is inclined, and the inclined plate rotatably connected to the moving block and the locking block pulls the locking block to move when the moving block moves.

[0014] Preferably, the limit block is in a transverse "T" shape, and the outer wall of the "T"-shaped end of the limit block is in contact with the inner wall of the limit groove which is also in a "T" shape and is slidably connected up and down to ensure the stability of the upward and downward movement of the moving block.

[0015] The present invention also provides a crane bearing vibration measurement method, using the above-mentioned crane bearing vibration measurement device, and the specific operation steps are as follows:

[0016] Step 1: Determine the inner ring diameter of the crane bearing to be tested and replace the mounting shaft on the device;

[0017] Step 2: Put the crane bearing on the outer ring of the shaft, and then start the telescopic rod to drive the top block to press against the crane bearing;

[0018] Step 3: Start the rotation of the output shaft inside the main shaft box to adjust the rotation of the crane bearing, and collect vibration data through the vibration sensor measuring end in contact with the outer wall of the crane bearing;

[0019] Step 4: Start the telescopic rod to drive the top block away from the crane bearing, and then pull out and remove the crane bearing.

[0020] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0021] The present invention drives the screw to rotate by twisting the pairing rod, and the two moving blocks connected to the screw thread move in phase separation at this time, and the engaging blocks on both sides of the moving block move toward each other under the transmission action of the inclined plate, so that the engaging blocks leave the inside of the engaging groove, and then it is convenient to extract the placement shaft to facilitate the installation of the placement shaft with different shaft diameters, and it is convenient for the detection of crane bearings with different inner ring diameters, and the interference can be ignored, which can ensure the accuracy of the detection. That is, it ensures that the crane bearing vibration measurement device has a wide range of applications, and it is convenient to maintain the placement shaft, ensuring the subsequent use of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a stereoscopic diagram of the overall structure of the present invention.

[0024] Figure 2 It is an exploded view of the overall structure of the spindle box of the present invention.

[0025] Figure 3 It is an exploded view of the overall structure of the output shaft, the mounting shaft and the crane bearing of the present invention.

[0026] Figure 4 It is a stereoscopic diagram of the internal structure of the output shaft (partially cut away) of the present invention.

[0027] Figure 5 It is an exploded view of the overall structure of the snap-fit ​​installation assembly of the present invention.

[0028] Figure 6 It is a three-dimensional diagram of the internal structure of the output shaft of the present invention (partially cut away from another angle).

[0029] Figure 7 It is a three-dimensional diagram of the connection structure between the snap-fit ​​installation assembly and the placement shaft of the present invention.

[0030] Description of reference numerals:

[0031] 1. Mounting seat; 2. Spindle box; 3. Output shaft; 4. Mounting table; 5. Telescopic rod; 6. Top block; 7. Extension plate; 8. Vibration sensor; 9. Placement shaft; 901. Mounting head; 902. Shaft body; 10. Crane bearing; 11. Torsion assembly; 1101. Mounting groove; 1102. Cavity; 1103. Screw; 1104. Top plate; 1105. Matching groove; 1106. Rotating groove; 1107. Matching rod; 12. Snap-fit ​​mounting assembly; 1201. Moving block; 1202. Snap-fit ​​block; 1203. Snap-fit ​​groove; 1204. First notch; 1205. Second notch; 1206. Short rod; 1207. Inclined plate; 1208. Limit block; 1209. Limit groove; 1210. Mounting block. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1-Figure 7As shown, the present invention provides a crane bearing vibration measuring device as shown, comprising a mounting seat 1, a spindle box 2 is fixedly mounted at one side position on the top of the mounting seat 1, and the output end of the spindle box 2 is drivingly connected to the output shaft 3, and the output shaft 3 is internally clamped with a placement shaft 9, the placement shaft 9 is composed of a mounting head 901 and a shaft body 902 fixedly connected to the mounting head 901, and the outer ring of the shaft body 902 is movably sleeved with a crane bearing 10, an extension plate 7 is slidably connected to the top of the spindle box 2, and a vibration sensor 8 (also called a vibration sensor) is embedded and installed at the end of the extension plate 7, wherein the probe of the vibration sensor 8 is in contact with the outer wall of the crane bearing 10, and a mounting platform 4 is movably connected to the other side of the top of the mounting seat 1, and a telescopic rod 5 is fixedly connected to the top of the mounting platform 4, and a top block 6 is fixedly connected to the end of the telescopic rod 5, wherein the top block 6 supports the side wall of the crane bearing 10.

[0034] Also includes:

[0035] The torsion assembly 11 includes a mounting groove 1101 opened inside the output shaft 3, and the mounting groove 1101 is installed to match the mounting head 901. A cavity 1102 is opened inside the output shaft 3, and a screw 1103 is rotatably connected inside the cavity 1102, and one end of the screw 1103 extends upward to the inside of the rotating groove 1106. The end of the rod body of the screw 1103 located inside the rotating groove 1106 is fixedly connected to a top plate 1104, and the top plate 1104 rotates inside the rotating groove 1106. An open matching groove 1105 is provided inside the top plate 1104, and the matching groove 1105 matches the end of the matching rod 1107. When the matching rod 1107 is rotated, the screw 1103 can be driven to rotate, and the matching rod 1107 can also be removed and stored separately.

[0036] The snap-fit ​​installation assembly 12 includes a moving block 1201 threadedly connected to the outer ring of the screw rod 1103, and a snap-fit ​​block 1202 is arranged parallel to the moving block 1201, and the snap-fit ​​block 1202 matches the snap-fit ​​groove 1203 arranged inside the installation head 901, and the moving block 1201 and the snap-fit ​​block 1202 are respectively provided with a first notch 1204 and a second notch 1205 inside, and an inclined plate 1207 is rotatably connected between the first notch 1204 and the second notch 1205 through a short rod 1206, and the moving block The side walls of 1201 are fixedly connected with limit blocks 1208, and the limit blocks 1208 move inside the limit grooves 1209, and the limit grooves 1209 are connected with the cavity 1102. The two side walls of the engaging block 1202 are fixedly connected with mounting blocks 1210, and the mounting blocks 1210 move inside the corresponding grooves (not shown in the figure, but those skilled in the art should understand the opening positions of the grooves based on this specification and the drawings in the specification), and the grooves are also connected with the cavity 1102, so as to ensure the stable movement of the engaging block 1202.

[0037] The outer ring of the screw 1103 is provided with two sections of symmetrical threads with opposite thread directions, and each section of the thread is threadedly connected with a moving block 1201. The two moving blocks 1201 are symmetrically arranged up and down, and first notches 1204 are opened at the symmetrical two sides of the moving blocks 1201. The two first notches 1204 respectively correspond to the second notches 1205 set inside the locking blocks 1202 on both sides. The rotation of the screw 1103 drives the moving blocks 1201 threadedly connected to the two threads on the outer ring of the screw 1103 to move towards or away from each other.

[0038] The matching rod 1107 is in a “T” shape, and the “T”-shaped end of the matching rod 1107 matches the matching groove 1105 , so that when the matching rod 1107 is matched with the matching groove 1105 and the matching rod 1107 is rotated, the screw rod 1103 can be driven to rotate.

[0039] A short rod 1206 is rotatably connected to the inner wall of each first notch 1204, and two short rods 1206 symmetrically arranged up and down are rotatably connected to the inner wall of each second notch 1205, and an inclined plate 1207 is fixedly sleeved between the outer ring of the short rod 1206 arranged inside the upper moving block 1201 and the outer ring of the short rod 1206 at the upper position in the locking block 1202, and an inclined plate 1207 is fixedly sleeved between the outer ring of the short rod 1206 arranged inside the lower moving block 1201 and the outer ring of the short rod 1206 at the lower position in the locking block 1202, the inclined plate 1207 is inclined, and the inclined plate 1207 rotatably connected to the moving block 1201 and the locking block 1202 pulls the locking block 1202 to move when the moving block 1201 moves.

[0040] The limit block 1208 is in a horizontal "T" shape, and the outer wall of the "T"-shaped end of the limit block 1208 is in contact with the inner wall of the limit groove 1209 which is also in a "T" shape and is slidably connected up and down to ensure the stability of the upward and downward movement of the moving block 1201.

[0041] The present invention also provides a crane bearing vibration measurement method, using the above-mentioned crane bearing vibration measurement device, and the specific operation steps are as follows:

[0042] Step 1: determine the inner ring diameter of the crane bearing 10 to be tested, and replace the mounting shaft 9 on the device;

[0043] Step 2: Mount the crane bearing 10 on the outer ring of the shaft 902, and then start the telescopic rod 5 to drive the top block 6 to press against the crane bearing 10;

[0044] Step 3: Start the rotation of the output shaft 3 inside the main shaft box 2 to mobilize the rotation of the crane bearing 10, and the vibration data is collected by the measuring end of the vibration sensor 8 in contact with the outer wall of the crane bearing 10 for subsequent judgment (for example, the vibration value of the crane bearing 10 does not exceed 0.12mm when the rated speed of the crane bearing 10 is below 750r / min. The vibration value of the crane bearing 10 does not exceed 0.10mm when the rated speed is 750r / min-1000r / min, which is slightly different according to the specific model of the crane bearing 10);

[0045] Step 4: Start the telescopic rod 5 to drive the top block 6 away from the crane bearing 10, and then pull out and remove the crane bearing 10.

[0046] Working principle: when in use, firstly, the top plate 1104 matching the matching rod 1107 and the screw 1103 fixedly connected to the end of the top plate 1104 are driven to rotate by twisting the matching rod 1107. The rotation of the screw 1103 makes the two symmetrical moving blocks 1201 threadedly connected with the two symmetrical threads on the outer circle of the screw 1103 perform a separated upward and downward movement. The limit block 1208 fixedly connected to the side wall of the moving block 1201 moves inside the limit groove 1209, thereby ensuring the stability of the movement of the two groups of moving blocks 1201. At the same time, the moving block 1201 and the engaging block 1202 are driven and connected by the inclined plate 1207, thereby ensuring that when the two moving blocks 1201 perform a separated movement, the inclined plate 1207 rotatably connected to the moving block 1201 and the engaging block 1202 pulls the engaging block 1202 to move toward the inside of the cavity 1102 and away from the inside of the engaging groove 1203, thereby facilitating The placement shaft 9 is extracted to facilitate the installation of the placement shaft 9 with different diameters of the shaft body 902, which is convenient for the detection of the crane bearing 10 with different inner ring diameters, ensuring that the crane bearing vibration measuring device has a wide range of application. When installing a new placement shaft 9, match the installation head 901 with the installation groove 1101, and then the screw 1103 can be rotated in the opposite direction. Similarly, the above operation steps, the two moving blocks 1201 at this time move towards each other, and at the same time, the two moving blocks 1201 move towards each other and drive the engaging block 1202 to move toward the inside of the engaging groove 1203, thereby completing the installation operation of the placement shaft 9 and the output shaft 3, and the crane bearing 10 is sleeved on the outer ring of the shaft body 902, and the telescopic rod 5 is started to mobilize the top block 6 to resist the crane bearing 10. During the rotation of the output shaft 3, the crane bearing 10 sleeved on the outer ring of the placement shaft 9 is synchronously driven to rotate, so that the vibration sensor 8 measuring end can detect the crane bearing 10 in a moving state.

[0047] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crane bearing vibration measuring device, comprising a mounting seat (1), characterized in that: A spindle box (2) is fixedly installed at one side of the top of the mounting seat (1), and the output end of the spindle box (2) is drivingly connected to the output shaft (3), and a placement shaft (9) is installed inside the output shaft (3), the placement shaft (9) is composed of a mounting head (901) and a shaft body (902) fixedly connected to the mounting head (901), and the outer ring of the shaft body (902) is movably sleeved with a crane bearing (10), the top of the spindle box (2) is slidably connected to an extension plate (7), and a vibration sensor (8) is embedded and installed at the end of the extension plate (7), wherein the pointer probe of the vibration sensor (8) contacts the outer wall of the crane bearing (10), the other side of the top of the mounting seat (1) is movably connected to a mounting platform (4), and the top of the mounting platform (4) is fixedly connected to a telescopic rod (5), and the end of the telescopic rod (5) is fixedly connected to a top block (6), wherein the top block (6) supports the side wall of the crane bearing (10); Also includes: The torsion assembly (11) comprises a mounting groove (1101) provided inside the output shaft (3), and the mounting groove (1101) is matched and installed with the mounting head (901), a cavity (1102) is provided inside the output shaft (3), and a screw rod (1103) is rotatably connected inside the cavity (1102), and one end of the screw rod (1103) extends upward to the inside of the rotation groove (1106), and the end of the rod body of the screw rod (1103) located inside the rotation groove (1106) is fixedly connected with a top plate (1104), and the top plate (1104) rotates inside the rotation groove (1106), and an open matching groove (1105) is provided inside the top plate (1104), and the matching groove (1105) matches the end of the matching rod (1107); The snap-fit ​​installation assembly (12) comprises a moving block (1201) threadedly connected to the outer ring of the screw rod (1103), and a snap-fit ​​block (1202) is arranged parallel to the moving block (1201), and the snap-fit ​​block (1202) matches with a snap-fit ​​groove (1203) arranged inside the installation head (901), and the moving block (1201) and the snap-fit ​​block (1202) are respectively provided with a first notch (1204) and a second notch (1205) inside, and the first notch (1204) and the second notch (1205) are respectively provided with a first notch (1204) and a second notch (1205) inside. 05) are rotatably connected with an inclined plate (1207) through a short rod (1206), the side wall of the moving block (1201) is fixedly connected with a limiting block (1208), and the limiting block (1208) moves inside a limiting groove (1209), and the limiting groove (1209) is connected to the cavity (1102), and the two side walls of the engaging block (1202) are fixedly connected with a mounting block (1210), and the mounting block (1210) moves inside a corresponding groove, and the groove is also connected to the cavity (1102); The outer ring of the screw rod (1103) is provided with two sections of symmetrical threads with opposite screw directions, and each section of the threads is threadedly connected with a moving block (1201), the two moving blocks (1201) are symmetrically arranged up and down, and the moving blocks (1201) are symmetrically provided with first notches (1204) on both sides, and the two first notches (1204) correspond to the second notches (1205) provided inside the locking blocks (1202) on both sides respectively; The matching rod (1107) is in a "T" shape, and the "T"-shaped end of the matching rod (1107) matches the matching groove (1105); A short rod (1206) is rotatably connected to the inner wall of each first notch (1204), and two short rods (1206) symmetrically arranged up and down are rotatably connected to the inner wall of each second notch (1205), and an inclined plate (1207) is fixedly sleeved between the outer ring of the short rod (1206) arranged inside the upper moving block (1201) and the outer ring of the short rod (1206) at the upper position in the locking block (1202), and an inclined plate (1207) is fixedly sleeved between the outer ring of the short rod (1206) arranged inside the lower moving block (1201) and the outer ring of the short rod (1206) at the lower position in the locking block (1202), and the inclined plate (1207) is inclined.

2. A crane bearing vibration measuring device according to claim 1, characterized in that: The limiting block (1208) is in a transverse "T" shape, and the outer wall of the "T"-shaped end of the limiting block (1208) is in contact with the inner wall of the limiting groove (1209) which is also in a "T" shape and is slidably connected up and down.

3. A crane bearing vibration measurement method, using a crane bearing vibration measurement device as claimed in claim 2, characterized in that: The specific steps are as follows: Step 1: determine the inner ring diameter of the crane bearing (10) to be tested, and replace the mounting shaft (9) on the device; Step 2: Mount the crane bearing (10) on the outer ring of the shaft (902), and then start the telescopic rod (5) to drive the top block (6) to press against the crane bearing (10); Step 3: Start the rotation of the output shaft (3) inside the main shaft box (2) to adjust the rotation of the crane bearing (10), and collect vibration data through the measuring end of the vibration sensor (8) in contact with the outer wall of the crane bearing (10); Step 4: Start the telescopic rod (5) to drive the top block (6) away from the crane bearing (10), and then pull out and remove the crane bearing (10).

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