A gear clearance detection device

Abstract

This application discloses a gear backlash detection device, relating to the field of gear backlash detection. It includes a chassis, a fixed base, a movable base, an L-shaped rod, and a fixing assembly. The L-shaped rod has a locking component inside, and the chassis has a movable assembly inside. The outer expansion block expands outward through the cooperation of the insertion rod and the outer expansion block, thereby causing the inner support plate to expand outward via a compression spring and the limiting action of the insertion rod. The inner support plate then presses and fixes the inner side of the gear. This device is easy to install and can accommodate gears with different inner diameters. The movable base is moved by rotating the threaded rod. After the movable base moves to the appropriate position, the rotating disk is released. Under the reset action of the tension spring, the rotating disk drives the insertion cylinder to cooperate with the fixed cylinder, locking the fixed cylinder and thus the threaded shaft. This facilitates fixing the threaded rod and prevents the movable base from moving due to the rotation of the threaded rod, which could affect gear meshing.

Description

Technical Field

[0001] This utility model relates to the field of gear backlash detection technology, and in particular to a gear backlash detection device. Background Technology

[0002] Gear backlash inspection involves measuring and evaluating the condition of the gear teeth after production. Gear backlash refers to the tiny space between gears during meshing, caused by factors such as manufacturing tolerances and thermal expansion. Correct gear backlash is crucial for ensuring the smooth operation of gear transmission systems, reducing wear, lowering noise and vibration, and improving transmission efficiency and accuracy.

[0003] When performing gear backlash detection, a gear meshing measuring instrument is required. The gear to be tested is mounted on the measuring instrument, and then the two gears are pushed close together to mesh. Then, one of the gears is controlled to rotate, which drives the vibration signal sensor at the bottom of the other gear to collect vibration signals. The vibration signals reflect the meshing accuracy, gear backlash, and gear wear, thus completing the gear backlash detection.

[0004] Existing gear backlash detection devices require disassembling multiple parts, inserting the gear into the insert on the measuring instrument, and then assembling the multiple parts onto the gear to fix it on the measuring instrument. The installation process is cumbersome and inconvenient to use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a gear backlash detection device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a gear backlash detection device, comprising a housing, a fixed seat on the upper surface of the housing, a movable seat on the upper surface of the housing, an L-shaped rod on the upper surface of both the fixed seat and the movable seat, a fixing component on the upper surface of both the fixed seat and the movable seat, a locking component inside the L-shaped rod, and a movable component inside the housing;

[0009] The fixing component includes a fixing ring fixedly connected to the upper surface of the movable seat, a plug shaft inserted into the inside of the fixing ring, a support plate fixedly connected to the top of the plug shaft, a fixing block fixedly connected to the upper surface of the support plate, four outer expansion blocks arranged inside the fixing block, inner support plates arranged on the outer side of the outer expansion blocks, and a plug rod inserted into the top of the fixing block.

[0010] A movable component includes a threaded rod movably connected inside a chassis. A threaded sleeve is engaged with the outer surface of the threaded rod. Connecting plates are fixedly connected to both sides of the threaded sleeve. A support plate is fixedly connected to the upper surface of the connecting plates. The top of the support plate passes through the upper surface of the chassis and is fixedly connected to the lower surface of the movable base. A rotating disk is movably connected to the outer surface of the end of the threaded rod away from the fixed base. A fixed cylinder is provided inside the chassis. A plug-in cylinder is provided on the side of the rotating disk near the fixed cylinder. A tension spring is fixedly connected to the side of the rotating disk near the plug-in cylinder.

[0011] In a preferred embodiment of the gear backlash detection device of this utility model, a motor is fixedly connected inside the movable base, the output end of the motor is fixedly connected to the bottom end of the plug shaft provided on the upper surface of the movable base, and a vibration sensor is provided inside the fixed base, the upper surface of the vibration sensor is movably connected to the bottom end of the plug shaft provided on the upper surface of the fixed base.

[0012] In a preferred embodiment of the gear backlash detection device of this utility model, the interior of the fixing block and the interior of the L-shaped rod are provided with insertion holes that cooperate with the insertion rod, the bottom outer surface of the insertion rod is provided with an inclined surface, and the inner side of the outer expansion block is provided with an inclined surface that cooperates with the insertion rod.

[0013] In a preferred embodiment of the gear backlash detection device of this utility model, the fixed block has an annular groove inside, and an opening for accommodating the outer expansion block is provided between the annular groove and the insertion hole inside the fixed block. The upper and lower surfaces of the annular groove are provided with limiting grooves, and the upper and lower surfaces of the outer expansion block are provided with limiting protrusions that cooperate with the limiting grooves.

[0014] In a preferred embodiment of the gear backlash detection device of this utility model, two insert rods are fixedly connected to the side of the inner support plate near the outer tension block, two compression springs are fixedly connected between the inner support plate and the outer tension block, and a blind hole that cooperates with the insert rods is opened on the outer surface of the outer tension block.

[0015] In a preferred embodiment of the gear backlash detection device of this utility model, a fixed plate is fixedly connected inside the housing, a movable ring is fixedly connected to one end of the tension spring near the fixed plate, an annular groove is provided on the outer side of the fixed cylinder, a protrusion that mates with the annular groove is provided on the inner side of the movable ring, and teeth are provided on the adjacent ends of both the fixed cylinder and the insertion cylinder.

[0016] In a preferred embodiment of the gear backlash detection device of this utility model, two limiting rods are fixedly connected inside the chassis, and the limiting rods pass through the interior of the connecting plate.

[0017] In a preferred embodiment of the gear clearance detection device of this utility model, a flat key is provided on the outer surface of the threaded rod near the rotating disk, a through hole is provided inside the rotating disk to cooperate with the threaded rod, a keyway is provided on the inner wall of the through hole to cooperate with the flat key, and a stop block is fixedly connected to one end of the threaded rod through the inside of the rotating disk.

[0018] (III) Beneficial Effects

[0019] This utility model provides a gear backlash detection device. It has the following advantages:

[0020] 1. The outer expansion block is driven to expand outward by the cooperation of the plug rod and the outer expansion block, thereby driving the inner support plate to expand outward by the setting of the compression spring and the limiting effect of the plug rod. The inner support plate then compresses and fixes the inner side of the gear. It is easy to install and can adapt to gears with different inner diameters.

[0021] 2. The movement of the movable seat is controlled by rotating the threaded rod. After the movable seat moves to the appropriate position, the rotating disk is released. Under the reset action of the tension spring, the rotating disk drives the plug-in cylinder to cooperate with the fixed cylinder, thereby locking the fixed cylinder, locking the plug-in cylinder, and then locking the threaded shaft. This facilitates the fixing of the threaded rod and prevents the threaded rod from rotating, which would cause the movable seat to move and affect the gear meshing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is an exploded structural diagram of the fixing component of this utility model.

[0025] Figure 3 This is an exploded structural diagram of the fixing block of this utility model.

[0026] Figure 4 This is an exploded structural diagram of the mobile component of this utility model.

[0027] In the diagram, 1. Chassis; 2. Mounting base; 3. L-shaped rod; 4. Locking component; 5. Fixing assembly; 501. Connecting rod; 502. Fixing block; 503. Support plate; 504. Connecting shaft; 505. Fixing ring; 506. Inner support plate; 507. Connecting rod; 508. Outer tension block; 509. Compression spring; 6. Moving base; 7. Moving assembly; 701. Connecting plate; 702. Limiting rod; 703. Threaded sleeve; 704. Threaded rod; 705. Fixing plate; 706. Fixing cylinder; 707. Rotating plate; 708. Connecting cylinder; 709. Tension spring; 710. Support plate. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 and Figure 3 This is the first embodiment of the present utility model. This embodiment provides a gear backlash detection device, including a housing 1. A fixed seat 2 is provided on the upper surface of the housing 1. A movable seat 6 is provided on the upper surface of the housing 1. An L-shaped rod 3 is provided on the upper surface of both the fixed seat 2 and the movable seat 6. A fixing component 5 is provided on the upper surface of both the fixed seat 2 and the movable seat 6. A locking component 4 is provided inside the L-shaped rod 3. A movable component 7 is provided inside the housing 1.

[0031] The fixing component 5 includes a fixing ring 505 fixedly connected to the upper surface of the movable seat 6. A plug shaft 504 is inserted into the inside of the fixing ring 505. A support plate 503 is fixedly connected to the top of the plug shaft 504. A fixing block 502 is fixedly connected to the upper surface of the support plate 503. Four outward expansion blocks 508 are provided inside the fixing block 502. Inner support plates 506 are provided on the outer side of the outward expansion blocks 508. A plug rod 501 is inserted into the top of the fixing block 502.

[0032] Specifically, a motor is fixedly connected inside the movable base 6, and the output end of the motor is fixedly connected to the bottom end of the insertion shaft 504 on the upper surface of the movable base 6. A vibration sensor is installed inside the fixed base 2, and the upper surface of the vibration sensor is movably connected to the bottom end of the insertion shaft 504 on the upper surface of the fixed base 2. The motor drives the insertion shaft 504 on the upper surface of the movable base 6 to rotate, which in turn drives the support plate 503 and the fixed block 502 on the upper surface of the movable base 6 to rotate. Thus, the friction of the inner support plate 506 drives the gear to be tested to rotate, thereby enabling the gear to be tested to drive the standard gear to rotate. The vibration sensor inside the fixed base 2 senses the vibration of the insertion shaft 504 inside the fixed base 2, thereby collecting the vibration signal generated by the gap collision during the transmission meshing between the standard gear and the gear to be tested, thus realizing the collection of test data for the gear to be tested.

[0033] Specifically, the interior of the fixing block 502 and the interior of the L-shaped rod 3 are provided with insertion holes that cooperate with the insertion rod 501. The bottom outer surface of the insertion rod 501 is provided with a slope, and the inner side of the outer expansion block 508 is provided with a slope that cooperates with the insertion rod 501. When the insertion rod 501 is inserted, the slope at the bottom of the insertion rod 501 and the slope on the inner side of the outer expansion block 508 drive the outer expansion block 508 to expand outward, thereby driving the inner support plate 506 to press the inner side of the gear outward, thus fixing the gear.

[0034] Specifically, the fixed block 502 has an annular groove inside, and an opening for accommodating the outer expansion block 508 is provided between the annular groove and the insertion hole inside the fixed block 502. The upper and lower surfaces of the annular groove are provided with limiting grooves, and the upper and lower surfaces of the outer expansion block 508 are provided with limiting protrusions that cooperate with the limiting grooves. Through the cooperation of the limiting grooves provided inside the annular groove, the outward expansion of the outer expansion block 508 is restricted, and the misalignment of the outer expansion block 508 is prevented.

[0035] Specifically, two insert rods 507 are fixedly connected to the side of the inner support plate 506 near the outer expansion block 508. Two compression springs 509 are fixedly connected between the inner support plate 506 and the outer expansion block 508. The outer surface of the outer expansion block 508 is provided with blind holes that cooperate with the insert rods 507. Through the cooperation of the insert rods 507 and the blind holes, and the setting of the compression springs 509, when the outer expansion block 508 expands outward, the insert rods 507 drive the inner support plate 506 to squeeze against the inner side of the gear, continuously expanding outward, thereby driving the compression springs 509 to contract, thereby increasing the squeezing force of the inner support plate 506 on the inner side of the gear.

[0036] Furthermore, the outer surface of the fixing block 502 is inserted through the round hole inside the gear, and then the insertion rod 501 is passed through the insertion hole inside the L-shaped rod 3, so that the insertion rod 501 cooperates with the insertion hole on the upper surface of the fixing block 502. Then, the insertion rod 501 is pressed down, and the inclined surface of the bottom outer surface of the insertion rod 501 drives the outer expansion block 508 to expand outward, thereby driving the inner support plate 506 to expand outward through the setting of the compression spring 509 and the limiting effect of the insertion rod 507. Thus, the inner support plate 506 squeezes and fixes the inner side of the gear. It is easy to install and can adapt to gears with different inner diameters. The connection relationship, working principle and operation sequence between the locking component 4 and the vibration sensor and other components are existing technologies and are common knowledge known to those skilled in the art. They will not be described in detail here.

[0037] Example 2

[0038] Reference Figure 1 and Figure 4 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The moving component 7 includes a threaded rod 704 movably connected inside the housing 1. A threaded sleeve 703 is engaged with the outer surface of the threaded rod 704. Connecting plates 701 are fixedly connected to both sides of the threaded sleeve 703. A support plate 710 is fixedly connected to the upper surface of the connecting plate 701. The top of the support plate 710 passes through the upper surface of the housing 1 and is fixedly connected to the lower surface of the moving seat 6. A rotating disk 707 is movably connected to the outer surface of the end of the threaded rod 704 away from the fixed seat 2. A fixed cylinder 706 is provided inside the housing 1. A plug-in cylinder 708 is provided on the side of the rotating disk 707 near the fixed cylinder 706. A tension spring 709 is fixedly connected to the side of the rotating disk 707 near the plug-in cylinder 708.

[0039] Specifically, a fixed plate 705 is fixedly connected inside the chassis 1. A movable ring is fixedly connected to one end of the tension spring 709 near the fixed plate 705. An annular groove is provided on the outer side of the fixed cylinder 706, and a protrusion that mates with the annular groove is provided on the inner side of the movable ring. Teeth are provided on the adjacent ends of both the fixed cylinder 706 and the insertion cylinder 708. The fixed cylinder 706 is fixedly connected to the fixed plate 705 to prevent the fixed cylinder 706 from rotating. The rotation of the rotating disk 707 is achieved through the annular groove on the outer side of the fixed cylinder 706 and the movable ring. When the rotating disk 707 rotates, the tension spring 709 rotates, and the tension spring 709 rotates the movable ring on the outer surface of the fixed cylinder 706. This prevents the tension spring 709 from being twisted due to the rotation of the rotating disk 707. Furthermore, the connection between the movable ring and the insertion cylinder 708 is maintained through the engagement of the ring groove and the protrusion on the inner side of the movable ring. This ensures that when the rotating disk 707 is released, the tension spring 709 can retract the rotating disk 707 through the reset action, thereby engaging the insertion cylinder 708 with the fixed cylinder 706.

[0040] Specifically, the chassis 1 has two fixedly connected limit rods 702 inside. The limit rods 702 pass through the inside of the connecting plate 701. By setting the limit rods 702, the connecting plate 701 is limited, preventing the connecting plate 701 and the threaded sleeve 703 from rotating with the rotation of the threaded rod 704.

[0041] Specifically, a flat key is provided on the outer surface of the threaded rod 704 near the rotating disk 707. The rotating disk 707 has a through hole that mates with the threaded rod 704. The inner wall of the through hole has a keyway that mates with the flat key. One end of the threaded rod 704 passes through the interior of the rotating disk 707 and is fixedly connected to a stop block. The flat key and keyway allow the rotating disk 707 to be pulled laterally, and the rotating disk 707 can drive the threaded rod 704 to rotate. The stop block prevents the rotating disk 707 from being pulled outward too much, which could cause it to separate from the threaded rod 704.

[0042] Furthermore, by loosening the rotating disk 707, under the action of the tension spring 709, the rotating disk 707 drives the insertion cylinder 708 to cooperate with the fixed cylinder 706, thereby locking the fixed cylinder 706, locking the insertion cylinder 708, and then locking the threaded shaft, which facilitates the fixing of the threaded rod 704 and prevents the threaded rod 704 from rotating, thus affecting the gear meshing.

[0043] Working principle: When performing gear clearance testing, a standard gear is installed on the fixing component 5 at the top of the fixed base 2, and the gear to be tested is installed on the fixing component 5 at the top of the movable base 6. The gear is inserted into the outer surface of the fixing block 502 through the round hole inside the gear. Then, the insertion rod 501 is passed through the insertion hole inside the L-shaped rod 3, so that the insertion rod 501 mates with the insertion hole on the upper surface of the fixing block 502. Then, the insertion rod 501 is pressed down, and the inclined surface of the bottom outer surface of the insertion rod 501 drives the outer expansion block 508 to expand outward, thereby driving the compression spring 50. The setting of 9 and the limiting effect of the insertion rod 507 drive the inner support plate 506 to expand outward, thereby pressing and fixing the inner side of the gear through the inner support plate 506. Then, the locking component 4 locks the insertion rod 501, finally realizing the installation of two gears. The installation is convenient and can adapt to gears with different inner diameters. After the gears are installed, pull the rotating disk 707. The rotating disk 707 drives the insertion cylinder 708 to disengage from the fixed cylinder 706, thereby unlocking the fixed cylinder 706. Then, the keyway on the inner side of the rotating disk 707 and the flat key on the outer surface of the threaded rod 704 cooperate. This causes the threaded rod 704 to rotate, which in turn moves the threaded sleeve 703 on the outer surface of the threaded rod 704. This movement, in turn, moves the two connecting plates 701. Under the action of the limiting rod 702, the connecting plates 701, via the support plate 710, move the movable seat 6 towards the fixed seat 2, thereby engaging the gear on the upper surface of the movable seat 6 with the gear on the upper surface of the fixed seat 2. At this point, the rotating disk 707 is released, and under the action of the tension spring 709, the rotating disk 707 drives the insertion sleeve 708 to engage with the fixed sleeve 706, achieving a locking mechanism. The fixed cylinder 706 locks the plug-in cylinder 708, which in turn locks the threaded shaft, facilitating the fixing of the threaded rod 704 and preventing the threaded rod 704 from rotating and affecting gear meshing. Then, the motor inside the movable seat 6 drives the plug-in shaft 504 to rotate, which in turn drives the fixed block 502 to rotate through the support plate 503. The friction of the inner support plate 506 on the inner side of the gear drives the gear to be tested to rotate, which in turn drives the standard gear to rotate. The rotation of the standard gear transmits the vibration signal to the vibration sensor inside the fixed seat 2 through the plug-in shaft 504, thus completing the gear gap detection.

[0044] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A gear backlash detection device, comprising a housing (1), characterized in that: The upper surface of the chassis (1) is provided with a fixed seat (2), the upper surface of the chassis (1) is provided with a movable seat (6), the upper surfaces of the fixed seat (2) and the movable seat (6) are both provided with L-shaped rods (3), the upper surfaces of the fixed seat (2) and the movable seat (6) are both provided with fixing components (5), the interior of the L-shaped rod (3) is provided with a locking component (4), and the interior of the chassis (1) is provided with a movable component (7). The fixing component (5) includes a fixing ring (505) fixedly connected to the upper surface of the movable seat (6), a plug shaft (504) is inserted into the inside of the fixing ring (505), a support plate (503) is fixedly connected to the top of the plug shaft (504), a fixing block (502) is fixedly connected to the upper surface of the support plate (503), four outer expansion blocks (508) are provided inside the fixing block (502), an inner support piece (506) is provided on the outer side of the outer expansion block (508), and a plug rod (501) is inserted into the top of the fixing block (502). The movable component (7) includes a threaded rod (704) movably connected inside the housing (1). A threaded sleeve (703) is engaged with the outer surface of the threaded rod (704). A connecting plate (701) is fixedly connected to both sides of the threaded sleeve (703). A support plate (710) is fixedly connected to the upper surface of the connecting plate (701). The top of the support plate (710) passes through the upper surface of the housing (1) and is fixedly connected to the lower surface of the movable seat (6). A rotating disk (707) is movably connected to the outer surface of the end of the threaded rod (704) away from the fixed seat (2). A fixed cylinder (706) is provided inside the housing (1). A plug-in cylinder (708) is provided on the side of the rotating disk (707) near the fixed cylinder (706). A tension spring (709) is fixedly connected to the side of the rotating disk (707) near the plug-in cylinder (708).

2. The gear backlash detection device according to claim 1, characterized in that: A motor is fixedly connected inside the movable seat (6), and the output end of the motor is fixedly connected to the bottom end of the plug shaft (504) provided on the upper surface of the movable seat (6). A vibration sensor is provided inside the fixed seat (2), and the upper surface of the vibration sensor is movably connected to the bottom end of the plug shaft (504) provided on the upper surface of the fixed seat (2).

3. The gear backlash detection device according to claim 2, characterized in that: The interior of the fixing block (502) and the interior of the L-shaped rod (3) are provided with insertion holes that cooperate with the insertion rod (501). The bottom outer surface of the insertion rod (501) is provided with a slope, and the inner side of the outer expansion block (508) is provided with a slope that cooperates with the insertion rod (501).

4. The gear backlash detection device according to claim 3, characterized in that: The fixed block (502) has an annular groove inside, and an opening for accommodating the outer expansion block (508) is provided between the annular groove and the insertion hole inside the fixed block (502). The upper and lower surfaces of the annular groove are provided with limiting grooves, and the upper and lower surfaces of the outer expansion block (508) are provided with limiting protrusions that cooperate with the limiting grooves.

5. A gear backlash detection device according to claim 4, characterized in that: Two insert rods (507) are fixedly connected to the side of the inner support plate (506) near the outer expansion block (508). Two compression springs (509) are fixedly connected between the inner support plate (506) and the outer expansion block (508). A blind hole that cooperates with the insert rods (507) is opened on the outer surface of the outer expansion block (508).

6. The gear backlash detection device according to claim 5, characterized in that: The chassis (1) is fixedly connected to a fixed plate (705). The tension spring (709) is fixedly connected to a movable ring at one end near the fixed plate (705). The outer side of the fixed cylinder (706) is provided with a ring groove. The inner side of the movable ring is provided with a protrusion that matches the ring groove. The adjacent ends of the fixed cylinder (706) and the plug-in cylinder (708) are both provided with teeth.

7. A gear backlash detection device according to claim 6, characterized in that: The chassis (1) has two fixedly connected limit rods (702) inside, which pass through the interior of the connecting plate (701).

8. The gear backlash detection device according to claim 7, characterized in that: A flat key is provided on the outer surface of the threaded rod (704) near the rotating disk (707). The rotating disk (707) has a through hole that mates with the threaded rod (704). The inner wall of the through hole has a keyway that mates with the flat key. One end of the threaded rod (704) passes through the interior of the rotating disk (707) and is fixedly connected to a stop block.

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