CN115655048A - Assembly clearance detection device and method for fan bracket bearing - Google Patents

Abstract

The invention relates to the technical field of detection device structures, in particular to an assembly clearance detection device of a fan bracket bearing. Comprises a base; the supporting seat is arranged on the base; the positioning structure is arranged at the bottom of the supporting seat and is used for positioning the fan bracket through a fixing hole on the fan bracket; the clamping structure is arranged at the bottom of the supporting seat and used for clamping and fixing the fan bracket; the upper push rod vertically penetrates through the top of the supporting seat and applies downward pressure to the upper end of a transmission shaft of the inner bearing ring on the fan bracket; the lower push rod vertically penetrates through the bottom of the supporting seat and applies upward pressure to the lower end of the transmission shaft; the measuring structure is used for recording the height of the upper end of the transmission shaft under two states of the upper push rod pressing transmission shaft and the lower push rod pressing transmission shaft. The invention has simple structure and convenient operation, can accurately position the fan bracket bearing to be measured, accurately measure the assembly clearance and has simple measuring method.

Description

Assembly clearance detection device and method for fan bracket bearing

Technical Field

The invention relates to the technical field of detection device structures, in particular to an assembly clearance detection device and a detection method for a fan bracket bearing.

Background

In practical application, when the fan bracket is designed and selected, the bearing in the fan bracket is used as a main component, and the service life of the bearing is one of the most important reference factors. Excluding differences in material and manufacturing accuracy, the play of the bearing has a great influence on the dynamic performance (noise, vibration and friction) and the rotational accuracy of the bearing, as well as on the working life (wear and fatigue) under the same working conditions. The play of the bearing changes correspondingly under different states, and the bearing can be divided into: 1. original play; 2. a working play; 3. mounting play (fitting play).

The life of a bearing is actually affected by its operating play. However, since the operating play of the bearing is the play of its operating state at a certain temperature, rotational speed and load, it is normally difficult to measure. Therefore, in designing the fan bracket system, in order to ensure a certain service life of the bearing, the mounting clearance of the bearing is often required to be within a certain range, and therefore, the mounting clearance of the bearing needs to be detected before the fan bracket assembly is shipped.

In the prior art, as shown in a patent with a patent number of "CN112284322A" entitled "hub bearing axial clearance measuring machine and measuring method thereof", the invention provides a hub bearing axial clearance measuring machine and a measuring method thereof. The hub bearing axial clearance measuring machine further comprises a pressing component, and the pressing component is used for pressing the outer ring of the hub bearing to be measured. The displacement sensor is used for acquiring the axial displacement of the inner ring of the hub bearing to be measured relative to the outer ring. The hub bearing axial clearance measuring machine and the measuring method thereof can accurately obtain the axial clearance value of the hub bearing to be measured, and can timely detect the defective products of the hub bearing with axial clearance not reaching the standard. But this scheme mainly used wheel hub bearing, wheel hub bearing structure and fan support bearing structure are not identical, and fan support bearing structure is that the bearing is installed in fan support, and the transmission shaft is installed to the bearing inner race, and above-mentioned scheme fixes a position wheel hub bearing through a circular positioning seat to compress tightly the subassembly and directly compress tightly the bearing outer lane, and this kind of structure can't be fixed a position and compress tightly fan support, therefore above-mentioned scheme can't be applied to fan support bearing's play and measure.

Disclosure of Invention

The present invention is to provide a device and a method for detecting an assembly play of a fan bracket bearing, which are used to solve the above-mentioned drawbacks of the background art.

The technical scheme of the invention is as follows: an assembly play detection device of a fan bracket bearing comprises,

a base;

the supporting seat is arranged on the base;

the positioning structure is arranged at the bottom of the supporting seat and is used for positioning the fan support shaft through a fixing hole in the fan support;

the clamping structure is arranged at the bottom of the supporting seat and used for clamping and fixing the fan bracket;

the upper push rod vertically penetrates through the top of the supporting seat and is driven by an upper driving structure on the supporting seat to vertically apply downward pressure on the upper end of a transmission shaft of a bearing inner ring on the fan bracket;

the lower push rod vertically penetrates through the bottom of the supporting seat and is driven by a lower driving structure on the base to vertically apply upward pressure to the lower end of a transmission shaft of a bearing inner ring on the fan bracket;

and the measuring structure is arranged at the upper end of the transmission shaft and used for recording the height of the upper end of the transmission shaft under two states of the upper push rod pressing the transmission shaft and the lower push rod pressing the transmission shaft.

According to the present application, there is provided an assembly play detecting apparatus of a fan bracket bearing, the positioning structure including,

the part positioning support plate is a plate-shaped structure fixed at the bottom of the support seat, and a plurality of pin holes are formed in the part positioning support plate;

the positioning pins are arranged in the pin holes and correspond to the pin holes one to one.

According to the present application, there is provided an assembly play detecting apparatus of a fan bracket bearing, the upper driving structure including,

the upper cylinder is fixed at the top of the supporting seat through a cylinder bracket;

the first floating connecting structure is used for connecting an upper piston rod of the upper air cylinder and the upper push rod.

According to the present application, there is provided an assembly play detecting apparatus of a fan bracket bearing, the first floating connection structure including,

and one end of the upper connecting ball head is fixedly connected to the end part of the upper piston rod, and the other end of the upper connecting ball head is of a hemispherical structure clamped in an upper clamping groove at the upper end of the upper push rod.

According to the present application, there is provided an assembly play detecting apparatus of a fan supporter bearing, the lower driving structure including,

the lower air cylinder is arranged on the base;

and the second floating connecting structure is used for connecting a lower piston rod and a lower push rod of the lower air cylinder.

According to the present application, there is provided an assembly play detecting apparatus of a fan bracket bearing, the second floating connection structure including,

and one end of the lower connecting ball head is fixedly connected with the end part of the lower piston rod, and the other end of the lower connecting ball head is of a hemispherical structure clamped in a lower clamping groove at the lower end of the lower push rod.

According to the present application, there is provided an assembly play detecting apparatus of a fan bracket bearing, the clamping structure including,

the clamping cylinder is arranged at the bottom of the supporting seat;

one end of the clamping rod is connected to a piston rod of the clamping cylinder, and the other end of the clamping rod is used for clamping the fan bracket;

the connecting rod, the rotatable articulated connection of connecting rod lower extreme is in the casing of centre gripping cylinder, and the rotatable articulated connection of the other end is in the holding rod.

According to the present application, an assembling play detecting apparatus of a fan supporter bearing further comprises,

the pressure gauge is used for monitoring the output pressure of the upper cylinder, the lower cylinder and the clamping cylinder;

and the flow valves are used for controlling the operation of the upper cylinder, the lower cylinder and the clamping cylinder.

According to the assembling play detection device of the fan bracket bearing provided by the application, the supporting seat is provided with a bearing seat,

the upper guide sleeve is a sleeve arranged at the top of the supporting seat, and is sleeved outside the upper push rod to limit the non-axial movement of the upper push rod;

the lower guide sleeve is a sleeve arranged at the bottom of the supporting seat, and the lower guide sleeve is sleeved outside the lower push rod to limit the non-axial movement of the lower push rod.

According to the assembling play detection device of the fan bracket bearing provided by the application, the clamping structure further comprises,

the clamping cylinder fixing plate is a plate-shaped structure detachably fixed at the bottom of the supporting seat through bolts and is fixedly connected with the clamping cylinder.

The invention also provides an assembly clearance detection method of the fan bracket bearing, which utilizes the assembly clearance detection device of the fan bracket bearing to detect the assembly clearance of the fan bracket bearing and comprises the following steps:

s1, placing a fan support to be detected on a supporting seat, and positioning the fan support by using a positioning structure on the supporting seat;

s2, after the fan support is positioned, clamping and fixing the fan support on the supporting seat by using a clamping structure on the supporting seat;

s3, starting a lower driving structure to drive a lower push rod to move upwards along the vertical direction, pushing a transmission shaft of an inner ring of a bearing on a fan bracket to move upwards, and recording the height h of the upper end of the transmission shaft after pressure is stable ₁ ；

S4, the lower driving structure drives the lower push rod to return to the initial position, the upper driving structure is started to drive the upper push rod to vertically move downwards, the lower end of the pushing transmission shaft moves downwards, and after pressure is stable, the height h of the upper end of the transmission shaft is recorded ₂ ；

S5, based on the above h ₁ And h ₂ And obtaining the assembly clearance of the fan bracket bearing, driving the upper push rod to return to the initial position by the upper driving structure, loosening the fan bracket by the clamping structure, and taking down the fan bracket to finish the assembly clearance detection of the fan bracket bearing.

The invention has the advantages that: 1. the invention is provided with a special positioning structure, the positioning structure can accurately position the fan bracket according to the fixing hole on the fan bracket, the detected bearing can be ensured to be installed at a determined position, after the fixing by the upper clamping structure, the upper push rod and the lower push rod can accurately apply axial pressure to the transmission shaft of the bearing inner ring, and the bearing inner ring is forced to reach the limit position, so that the assembly clearance of the fan bracket bearing is accurately obtained;

2. the positioning structure comprises the part positioning support plate, the part positioning support plate corresponds to the fixing hole in the fan bracket through the positioning pin, the bearing of the fan bracket can be conveniently and accurately positioned, the operation is convenient, and the positioning is accurate;

3. the upper push rod is driven by the upper air cylinder, the upper air cylinder is convenient to arrange and mount, the pressure is simple to adjust, slight shaking between the upper piston rod and the upper push rod can be allowed by utilizing the first floating connection structure, the force applied by the upper piston rod can be accurately transmitted to the upper push rod along the axial direction, and the assembly precision requirement is reduced;

4. the first floating connection structure comprises an upper connection ball head and a floating structure of an upper clamping groove, the upper connection ball head can slightly shake and rotate around the axis in the upper clamping groove, pressure of an upper air cylinder can be transmitted to the upper push rod along the axial direction of the upper push rod, and influence of assembly errors of the air cylinder on detection precision is reduced;

5. the lower air cylinder drives the lower push rod, the lower air cylinder is convenient to arrange and install, pressure is simple to adjust, slight shaking between the lower piston rod and the lower push rod can be allowed by utilizing the second floating connection structure, the force applied by the lower piston rod can be accurately transmitted to the lower push rod along the axial direction, and the requirement on assembly precision is reduced;

6. the second floating connection structure comprises a lower connection ball head and a lower clamping groove, the lower connection ball head can slightly shake in the lower clamping groove and rotate around the axis direction, pressure of a lower cylinder can be transmitted to a lower push rod along the axial direction of the lower push rod, and influence of cylinder assembly errors on detection accuracy is reduced;

7. the clamping structure is characterized in that the clamping air cylinder drives the clamping rod to clamp the fan bracket, and the clamping rod, the connecting rod and the piston rod of the clamping air cylinder form a lever structure, so that the fan bracket can be clamped stably and easily;

8. according to the invention, the upper cylinder, the lower cylinder and the clamping cylinder are controlled through the combined structure of the pressure gauge and the flow valve, so that the output pressure can be conveniently adjusted;

9. the upper guide sleeve and the lower guide sleeve are arranged to guide the upper push rod and the lower push rod, so that the upper push rod and the lower push rod are ensured to apply pressure along the axial direction of the transmission shaft, and the measurement accuracy is improved;

10. the clamping cylinder is arranged on the supporting seat through the clamping cylinder fixing plate, and the clamping cylinder fixing plate is fixedly connected to the supporting seat through the bolt, so that the clamping cylinder is convenient to disassemble and adjust;

11. the assembly clearance detection method can be well applied to assembly clearance detection of the fan bracket bearing, and the whole detection method is extremely simple, high in detection precision, accurate in clamping and positioning, extremely high in stability in the detection process, excellent in measurement precision and extremely high in popularization value.

The fan bracket bearing positioning device is simple in structure, convenient to operate, capable of accurately positioning the fan bracket bearing to be measured, accurate in measurement of assembly clearance, simple in measurement method and high in popularization value.

Drawings

FIG. 1: the structure of the detection device is shown schematically;

FIG. 2: the invention discloses a clamping and positioning schematic diagram of a fan bracket;

FIG. 3: the invention relates to a top view of a part positioning support plate;

FIG. 4: the first floating connection structure of the invention is shown schematically;

FIG. 5: the second floating connection structure of the invention is shown schematically;

wherein: 1-a base; 2, a support seat; 3, pushing up a push rod; 4, pushing the push rod down; 5, positioning a supporting plate for the part; 6-pin hole; 7, positioning pins; 8, an upper cylinder; 9-a cylinder support; 10-upper piston rod; 11-connecting a ball head; 12-upper card slot; 13-lower cylinder; 14-lower piston rod; 15-lower connecting ball head; 16-lower card slot; 17-a clamping cylinder; 18-a clamping rod; 19-a connecting rod; 20, mounting a guide sleeve; 21-lower guide sleeve; 22-clamping the cylinder fixing plate; 23, an upper pressure head; 24-lower ram.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, wherein like reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The invention is described in further detail below with reference to the figures and the specific embodiments.

The application relates to an assembly play detection device of fan bracket bearing, fan bracket's bearing is installed on fan bracket, the transmission shaft is still installed to the bearing inner race, can't carry out the accurate positioning to it according to current bearing assembly play detection mode, in order to solve this problem, this application provides a new assembly play detection device, can carry out the accurate positioning to fan bracket, can be accurate assemble the play to the bearing of installing on fan bracket and detect. Specifically, as shown in fig. 1 to 5, the detection device of the present application includes a base 1, a support base 2, a positioning structure, a clamping structure, an upper push rod 3, a lower push rod 4 and a measurement structure, wherein the base 1 is a bearing foundation of the entire detection device; the supporting seat 2 is arranged on the base 1, the supporting seat 2 is of a reversed-square-shaped structure and comprises a top plate, a bottom plate and side plates, the top plate and the bottom plate are arranged in parallel at intervals, and the upper end and the lower end of each side plate on two sides respectively support the top plate and the bottom plate to form an annular reversed-square-shaped structure; the positioning structure is arranged on the bottom plate of the supporting seat 2, the fan bracket is positioned through a fixing hole in the fan bracket (the fixing hole in the fan bracket is used for installing and fixing the fan bracket, and the fan bracket can be fixed on the installed equipment by driving a bolt into the fixing hole), and after the positioning of the fan bracket is finished, the positioning is finished equivalently to the positioning of a bearing on the fan bracket; the clamping structure is arranged on the bottom plate of the supporting seat 2 and used for clamping and fixing the fan support, the clamping structure is used for clamping and fixing the fan support, and the point is different from that of the existing detection equipment; the upper push rod 3 vertically penetrates through the top of the supporting seat 2, and is driven by an upper driving structure on the supporting seat 2 to vertically apply downward pressure on the upper end of a transmission shaft of a bearing inner ring of the fan bracket; the lower push rod 4 vertically penetrates through the bottom of the supporting seat 2, and is driven by a lower driving structure on the base 1 to vertically apply upward pressure to the lower end of a transmission shaft of a bearing inner ring of the fan bracket; the measuring structure is used for recording the height of the upper end of the transmission shaft under two states that the upper push rod 3 compresses the transmission shaft and the lower push rod 4 compresses the transmission shaft.

During the in-service use, place the fan bracket that awaits measuring on supporting seat 2 bottom plate, fix a position the fixed orifices on the fan bracket through location structure, after the location is accomplished, utilize clamping structure to fix the fan bracket, then start the lower drive structure drive push rod 4 rebound on the base 1, push rod 4 exerts pressure to the transmission shaft lower extreme of fan bracket's bearing inner circle, after reaching the settlement pressure, the height h of transmission shaft upper end this moment of measurement structure record ₁ After the upper driving structure is started, the upper push rod 3 applies pressure to the upper end of a transmission shaft of a bearing inner ring of the fan support, and after the set pressure is reached, the height h of the upper end of the transmission shaft at the moment is recorded ₂ At this time, the assembly clearance of the fan bracket bearing is h ₁ -h ₂ 。

When the assembly play is detected, because the fan support has a certain form and position tolerance (flatness and the like), when measuring, in the same measuring process (namely, pushing up and pressing down once), a measuring point is the same point, when measuring the structural reading, the bearing is slightly rotated left and right (the pressure applied to the transmission shaft by the upper push rod 3 and the lower push rod 4 is axial pressure, the rotation of the inner ring of the bearing is not influenced), and when the pointer of the dial indicator is stabilized, the reading is carried out again to ensure that the inner ring of the bearing reaches the limit position. In order to ensure the reliability of the measurement result, theoretically, multiple points should be selected for measurement of the same product, and if the precision of the device is sufficient, the measurement error of the multiple points should be within 0.01 mm.

The utility model provides a measurement structure includes the percentage table, and the percentage table is placed in the upper end of transmission shaft, reads the digit that the percentage table probe instructed, just can obtain the height value of transmission shaft upper end.

In some embodiments of the present application, the positioning structure described above is optimized in this embodiment, specifically, as shown in fig. 1 to 3, the positioning structure of this embodiment includes a part positioning support plate 5, the part positioning support plate 5 is a plate-shaped structure fixed at the bottom of the support seat 2, a plurality of pin holes 6 are formed in the part positioning support plate 5, and positioning pins 7 are installed in the pin holes 6. Be provided with the first mounting hole that is used for installing part location backup pad 5 on the bottom plate of supporting seat 2 of this embodiment, set up the screw that corresponds first mounting hole on the part location backup pad 5, fix part location backup pad 5 on the bottom plate that can be convenient through squeezing into the bolt.

The part positioning support plate 5 is positioned on the upper end face of the bottom plate, a through hole through which the lower push rod 4 penetrates is formed in the part positioning support plate 5, and the lower push rod 4 penetrates through the through hole to apply pressure to the lower end of the transmission shaft. In addition, two groups of pin holes 6 are arranged on two sides of the through hole of the part positioning support plate 5, the two groups of pin holes 6 correspond to two groups of positioning structures respectively, and the positioning structure can more accurately and stably position the fan support.

During the in-service use, place the up end of bottom plate with part location backup pad 5, make the through-hole on part location backup pad 5 align with the via hole on the bottom plate (be used for the passing through of push rod 4 down), the first mounting hole on the bottom plate aligns with the screw on part location backup pad 5, drives in the bolt and fixes part location backup pad 5 on the bottom plate. Then, the fan support is placed on the part positioning support plate 5, and the positioning pin 7 on the part positioning support plate 5 is inserted into the fixing hole on the fan support, so that the positioning of the part positioning support plate 5 on the fan support can be completed.

In other embodiments of the present application, the clamping structure is optimized in this embodiment, specifically as shown in fig. 1 to 2, the clamping structure of this embodiment clamps the air cylinder 17, the clamping rod 18, and the connecting rod 19, the clamping air cylinder 17 is installed on the upper end surface of the bottom plate of the supporting seat 2, and the piston rod of the clamping air cylinder 17 can be vertically extended and retracted; one end of the clamping rod 18 is connected with a piston rod of the clamping cylinder 17, and the other end of the clamping rod is used for clamping the fan bracket; the lower end of the connecting rod 19 is rotatably and hingedly connected to the housing of the clamping cylinder 17, the other end is rotatably and hingedly connected to the clamping rod 18, and the connecting rod 19 and the clamping rod 18 form a lever structure. This embodiment is provided with two sets of or two sets of above clamping structure on the bottom plate of supporting seat 2, and multiunit clamping structure arranges along fan bracket's circumference equidistance interval, and multiunit clamping structure synergism fixes fan bracket on supporting seat 2.

The clamping cylinder fixing plate 22 is arranged on the bottom plate of the supporting seat 2, the clamping cylinder fixing plate 22 is a plate-shaped structure detachably fixed at the bottom of the supporting seat 2 through bolts, and the clamping cylinder fixing plate 22 is fixedly connected with the clamping cylinder 17. The bottom plate is provided with a second mounting hole, the clamping cylinder fixing plate 22 is provided with a screw hole for alignment, and the clamping cylinder fixing plate 22 is fixed on the bottom plate through bolt connection.

When the clamping device is used, the clamping cylinder fixing plate 22 is fixed on the bottom plate through bolts, the clamping cylinders 17 on the clamping cylinder fixing plate 22 are sequentially arranged, after the fan support is positioned, the piston rod of the clamping cylinder 17 moves upwards to drive the end part of one side of the clamping rod 18 to move upwards, and the end part of the other side of the clamping rod 18 moves downwards to contact with the fan support until the fan support is clamped and fixed.

In the preferred embodiment of the present application, the present embodiment optimizes the above-mentioned upper driving structure, and specifically, as shown in fig. 1 and 4, the upper driving structure of the present embodiment includes an upper cylinder 8 and a first floating connection structure, the upper cylinder 8 is fixed on the top plate of the supporting seat 2 through a cylinder bracket 9, the upper push rod 3 passes through the top plate and is connected with an upper piston rod 10 of the upper cylinder 8, and the upper piston rod 10 is connected with the upper push rod 3 through the first floating connection structure. Specifically, an upper clamping groove 12 is formed in the upper end of the upper push rod 3, the upper clamping groove 12 is a square clamping groove, and an upper limiting block is arranged at the end portion, close to the upper piston rod 10, of the upper clamping groove 12. The lower end of the upper piston rod 10 is provided with an upper connecting ball 11, one end of the upper connecting ball 11 is fixedly connected with the end part of the upper piston rod 10, and the other end of the upper connecting ball is of a hemispherical structure clamped in an upper clamping groove 12 at the upper end of the upper push rod 3. Go up and connect bulb 11 block in last draw-in groove 12, go up the restriction of spacing piece and go up and connect bulb 11 and deviate from in last draw-in groove 12, go up and connect bulb 11 and can rotate in last draw-in groove 12, the rotation including the rotation around self axis to and around the rotation of connecting 11 apical indexes of bulb and last draw-in groove 12 contact point, the interference problem that upper piston rod 10 application of force direction and 3 inconsistent results in of direction of last push rod can be avoided in this rotation when 8 assembly precision of last cylinder is not enough.

Similarly, the lower driving structure is similar to the upper driving structure, and as shown in fig. 1 and 5, the lower driving structure includes a lower cylinder 13 and a second floating connection structure, the lower cylinder 13 is mounted on the base 1, the lower push rod 4 passes through the bottom plate of the supporting seat 2 and is connected with a lower piston rod 14 of the lower cylinder 13, and the upper end of the lower piston rod 14 is connected with the lower end of the lower push rod 4 through the second floating connection structure.

Specifically, a lower clamping groove 16 is formed in the upper end of the lower push rod 4, the lower clamping groove 16 is a square clamping groove, and a lower limiting block is arranged at the end portion, close to the lower piston rod 14, of the lower clamping groove 16. The upper end of the lower piston rod 14 is provided with a lower connecting ball head 15, one end of the lower connecting ball head 15 is fixedly connected with the end part of the lower piston rod 14, and the other end of the lower connecting ball head 15 is of a hemispherical structure clamped in a lower clamping groove 16 at the lower end of the lower push rod 4. Lower connecting ball 15 block is in lower draw-in groove 16, connects ball 15 and deviate from in lower draw-in groove 16 under the restriction of lower stopper, connects ball 15 can rotate in lower draw-in groove 16 down, the rotation including the rotation around self axis to and connect the rotation of ball 15 summit and draw-in groove 16 contact point down, such rotation can avoid the interference problem that lower piston rod 14 application of force direction and push rod 4 orientation inconsistent result in when lower cylinder 13 assembly precision is not enough.

In order to ensure that the upper push rod 3 and the lower push rod 4 always move in the vertical direction, a guide structure is provided on the support base 2 in this embodiment, as shown in fig. 1, the guide structure in this embodiment includes an upper guide sleeve 20 and a lower guide sleeve 21, the upper guide sleeve 20 is a sleeve mounted on the top of the support base 2, and the upper guide sleeve 20 is sleeved outside the upper push rod 3 to limit the non-axial movement of the upper push rod 3; the lower guide sleeve 21 is a sleeve installed at the bottom of the support seat 2, and the lower guide sleeve 21 is sleeved outside the lower push rod 3 to limit the non-axial movement of the lower push rod 3. The upper guide sleeve 20 and the lower guide sleeve 21 are coaxially arranged, and the structure ensures that the upper push rod 3 and the lower push rod 4 move coaxially in the vertical direction all the time, so that the pressure applied to the transmission shaft in the pushing and pressing process is ensured to extend axially along the transmission shaft all the time, and the measurement precision can be ensured to the maximum extent.

In addition, the lower end of the upper push rod 3 of the present embodiment is provided with an upper press head 23, the upper end of the lower push rod 4 is provided with a lower press head 24, the upper press head 23 and the lower press head 24 are detachable structures connected to the end portions of the upper push rod 3 and the lower push rod 4 through bolts, and in practical application, the upper press head 23 and the lower press head 24 with different specifications can be replaced to adapt to different fan support structures.

In a further embodiment of the present application, the present embodiment further includes an adjusting structure, where the adjusting structure of the present embodiment includes a pressure gauge and a plurality of flow valves, and the pressure gauge is used to monitor output pressures of the upper cylinder, the lower cylinder and the clamping cylinder; the flow valves are used for controlling the operation of the upper air cylinder 8, the lower air cylinder 13 and the clamping air cylinder 17, the three flow valves are arranged in the embodiment and respectively control the upper air cylinder 8, the lower air cylinder 13 and the clamping air cylinder 17, and the upper air cylinder 8, the lower air cylinder 13 and the clamping air cylinder 17 can be subjected to preset pressure regulation and control by matching with the pressure gauge.

When the assembly clearance of the fan bracket bearing is detected, the method comprises the following steps:

s1, placing a fan bracket on a bottom plate of a supporting seat 2, and positioning the fan bracket by using a positioning pin 7 on a part positioning supporting plate 5;

s2, after the positioning is finished, starting the clamping cylinder 17, driving the clamping rod 18 by the clamping cylinder 17, and clamping the fan bracket by the clamping rod 18;

s3, starting the lower air cylinder 13, driving the lower push rod 4 to move upwards by the lower air cylinder 13, and pushing the lower end of a transmission shaft of a bearing inner ring of the fan bracket by a lower pressure head 24 on the lower push rod 4After the pressure of the lower cylinder 13 is stabilized, the dial indicator is placed at the upper end of the transmission shaft, and the height h of the upper end of the transmission shaft at the moment is recorded ₁ ；

S4, controlling the lower air cylinder 13 to enable the lower push rod 4 to fall back, enabling the lower push rod 14 to fall back to an initial state, starting the upper air cylinder 8, driving the upper push rod 3 to move downwards by the upper air cylinder 8, enabling an upper pressure head 23 at the end part of the upper push rod 3 to abut against the upper end of a transmission shaft of a bearing inner ring of the fan support, and reading the height h of the upper end of the transmission shaft at the moment through a dial indicator after the pressure of the upper air cylinder 8 is stabilized ₂ The position of the dial indicator probe cannot move in the descending process, and the assembly clearance of the fan bracket bearing is h ₁ -h ₂ ；

And S5, controlling the upper air cylinder 8 to return to the initial position, loosening the clamping air cylinder 17, and replacing the next fan bracket for detection.

The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides an assembly play detection device of fan bracket bearing which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

a base (1);

the supporting seat (2), the supporting seat (2) is installed on the base (1);

the positioning structure is arranged at the bottom of the supporting seat (2) and is used for positioning the fan bracket through a fixing hole in the fan bracket;

the clamping structure is arranged at the bottom of the supporting seat (2) and used for clamping and fixing the fan bracket;

the upper push rod (3) vertically penetrates through the top of the supporting seat (2), and is driven by an upper driving structure on the supporting seat (2) to vertically apply downward pressure on the upper end of a transmission shaft of a bearing inner ring on the fan bracket;

the lower push rod (4) vertically penetrates through the bottom of the supporting seat (2), and is driven by a lower driving structure on the base (1) to vertically apply upward pressure to the lower end of a transmission shaft of a bearing inner ring on the fan support;

and the measuring structure is used for recording the height of the upper end of the transmission shaft under two states of the upper push rod (3) pressing the transmission shaft and the lower push rod (4) pressing the transmission shaft.

2. The assembly backlash detecting device of a fan holder bearing according to claim 1, wherein: the positioning structure comprises a positioning component and a positioning component,

the part positioning support plate (5) is a plate-shaped structure fixed at the bottom of the support seat (2), and a plurality of pin holes (6) are formed in the part positioning support plate (5);

the positioning pins (7) are installed in the pin holes (6), and the positioning pins (7) correspond to the pin holes (6) one to one.

3. The assembly play detection device of a fan bracket bearing according to claim 1, characterized in that: the upper driving structure comprises a driving mechanism and a driving mechanism,

the upper air cylinder (8) is fixed to the top of the supporting seat (2) through an air cylinder support (9);

the first floating connecting structure is used for connecting an upper piston rod (10) of an upper air cylinder (8) and an upper push rod (3).

4. The assembly play detection device of a fan bracket bearing according to claim 3, characterized in that: the first floating attachment structure may comprise,

the upper connecting ball head (11), one end of the upper connecting ball head (11) is fixedly connected to the end part of the upper piston rod (10), and the other end of the upper connecting ball head is of a hemispherical structure clamped in an upper clamping groove (12) at the upper end of the upper push rod (10).

5. The assembly play detection device of a fan bracket bearing according to claim 4, characterized in that: the lower driving structure comprises a lower driving structure which comprises a lower driving plate,

the lower air cylinder (13), the said lower air cylinder (13) is mounted on base (1);

and the second floating connecting structure is used for connecting a lower piston rod (14) of the lower air cylinder (13) with the lower push rod (4).

6. The assembly play detection device of a fan bracket bearing according to claim 5, characterized in that: the second floating attachment structure may include,

and one end of the lower connecting ball head (15) is fixedly connected to the end part of the lower piston rod (14), and the other end of the lower connecting ball head (15) is of a hemispherical structure clamped in a lower clamping groove (16) at the lower end of the lower push rod (4).

7. The assembly play detection device of a fan bracket bearing according to claim 5, characterized in that: the clamping structure comprises a clamping structure and a clamping structure,

the clamping cylinder (17), the said clamping cylinder (17) is mounted to the bottom of the supporting seat (2);

one end of the clamping rod (18) is connected to a piston rod of the clamping cylinder (17), and the other end of the clamping rod (18) is used for clamping the fan bracket;

and the lower end of the connecting rod (19) is rotatably hinged to the shell of the clamping cylinder (17), and the other end of the connecting rod (19) is rotatably hinged to the clamping rod (18).

8. The assembly play detection device of a fan bracket bearing according to claim 7, characterized in that: also comprises the following steps of (1) preparing,

the pressure gauge is used for monitoring the output pressure of the upper cylinder, the lower cylinder and the clamping cylinder;

and the flow valves are used for controlling the operation of the upper air cylinder, the lower air cylinder and the clamping air cylinder.

9. The assembly play detection device of a fan bracket bearing according to claim 1, characterized in that: the supporting seat is provided with a plurality of supporting rods,

the upper guide sleeve (20) is a sleeve arranged at the top of the supporting seat (2), and the upper guide sleeve (20) is sleeved outside the upper push rod (3) to limit the non-axial movement of the upper push rod (3);

the lower guide sleeve (21) is a sleeve arranged at the bottom of the supporting seat (2), and the lower guide sleeve (21) is sleeved outside the lower push rod (3) to limit the non-axial movement of the lower push rod (3).

10. An assembly clearance detection method of a fan bracket bearing is characterized in that: the assembly play detection of the fan bracket bearing by using the assembly play detection device of the fan bracket bearing according to any one of claims 1 to 9 is performed according to the following steps:

s1, placing a fan support to be detected on a supporting seat, and positioning the fan support by using a positioning structure on the supporting seat;

s2, after the fan support is positioned, clamping and fixing the fan support on the supporting seat by using a clamping structure on the supporting seat;

s3, starting the lower driving structure to drive the lower push rod to move upwards along the vertical direction, pushing a transmission shaft of an inner ring of a bearing on the fan bracket to move upwards, and recording the height h of the upper end of the transmission shaft after the pressure is stable ₁ ；

S4, the lower driving structure drives the lower push rod to return to the initial position, the upper driving structure is started to drive the upper push rod to move downwards along the vertical direction, the lower end of the pushing transmission shaft moves downwards, and after pressure is stable, the height h of the upper end of the transmission shaft is recorded ₂ ；

S5, based on the above h ₁ And h ₂ And obtaining the assembly clearance of the fan bracket bearing, driving the upper push rod to return to the initial position by the upper driving structure, loosening the fan bracket by the clamping structure, and taking down the fan bracket to finish the assembly clearance detection of the fan bracket bearing.

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