Reliability testing platform for quick replacement of fork connecting shaft

Abstract

The invention discloses a reliability testing platform for facilitating rapid disassembly and replacement of a fork connecting shaft, comprising: a mounting frame, a motor and a reducer for mounting a fork; the motor and the reducer are mounted on the mounting frame; the output end of the reducer is provided with a square head milling flat for rapidly mounting a spline shaft of the fork; mounting end covers are symmetrically arranged on both sides of the square head milling flat; a spline shaft sleeve for mounting the spline shaft is rotatably arranged on the mounting end cover; the spline shaft is detachably mounted in the spline shaft sleeve; an output shaft transmission shaft for connecting the reducer is arranged in the square head milling flat; two spline shaft sleeves are respectively connected to the two ends of the transmission shaft. The reliability testing platform for facilitating rapid disassembly and replacement of a fork connecting shaft provided by the invention does not need to disassemble the coupling when replacing the fork, the spline shaft can be rapidly disassembled and installed, the operation is fast and convenient, labor hours are saved, and the testing efficiency of the fork is improved.

Description

Technical Field

[0001] The invention relates to the field of testing devices for testing cargo forks, and in particular to a reliability testing platform which is convenient for rapid disassembly and replacement of a cargo fork connecting shaft. Background Art

[0002] After the fork is produced and before it is put into use, the performance of the telescopic structure needs to be tested on a test platform. When testing the fork on the existing fork testing platform, it is inconvenient to disassemble the fork to be replaced with a new one. The spline shaft needs to be moved out laterally after loosening the coupling screws. The outside of the spline shaft does not show its head, and a screwdriver needs to be used to push the spline shaft out from the inside. Such an operation is inconvenient due to the relatively small installation space. At the same time, when replacing the new fork to be tested, the spline shaft is separated from the coupling, and the spline shaft needs to be removed from the other side of the fork after disassembling the fork. Then, when replacing the new fork, the spline shaft needs to be pre-installed, and the position of the spline shaft needs to correspond to the position of the coupling keyway. If the spline shaft keyway is not in the right direction during pre-installation, it needs to be reinstalled and aligned, and the installation steps are complicated. Summary of the invention

[0003] At present, the commonly used fork test platform has a small installation space for installing and disassembling the fork due to the limitation of the platform structure, which makes the operation inconvenient. At the same time, when replacing a new fork to be tested, the spline shaft must be separated from the coupling, and the spline shaft must be taken out from the other side of the fork after disassembling the fork. Then, when replacing the new fork, the spline shaft must be pre-installed, and the position of the spline shaft must correspond to the position of the coupling keyway. If the spline shaft keyway is not in the right direction during pre-installation, it needs to be re-installed and aligned, which makes the installation steps complicated.

[0004] The present invention provides a reliability testing platform that facilitates rapid disassembly and replacement of a fork connecting shaft to solve the above technical problems, and specifically adopts the following technical solutions:

[0005] A reliability testing platform for facilitating rapid disassembly and replacement of a fork connecting shaft comprises: a mounting frame for mounting a fork, a motor and a reducer; the motor and the reducer are mounted on the mounting frame; a square head milling flat is provided at the output end of the reducer for rapid mounting of a spline shaft of the fork; mounting end covers are symmetrically provided on both sides of the square head milling flat; a spline shaft sleeve for mounting the spline shaft is rotatably provided on the mounting end cover; the spline shaft is detachably mounted in the spline shaft sleeve; a transmission shaft for connecting to the output shaft of the reducer is provided in the square head milling flat; and two spline shaft sleeves are respectively connected to the two ends of the transmission shaft.

[0006] Furthermore, the mounting end cover is detachably connected to the square head milling flat by means of an internal milling flat snap fit.

[0007] Furthermore, a chamfer is formed at one end of the spline shaft for guiding the spline shaft to be inserted into the spline sleeve.

[0008] Furthermore, a lifting ring is provided at the other end of the spline shaft for a worker to hold in order to insert or pull out the spline shaft.

[0009] Furthermore, the spline shaft sleeve comprises: a mounting sleeve and a compression sleeve; the compression sleeve is fixed to the outer periphery of the mounting sleeve by screws to press-fit the spline shaft into the mounting sleeve; the spline shaft is key-connected to the compression sleeve.

[0010] Furthermore, the mounting sleeve is formed with a square hole; the end of the transmission shaft is formed with a square convex portion; the mounting sleeve is sleeved on the outer periphery of the square convex portion through the square hole to rotate coaxially with the transmission shaft.

[0011] Furthermore, the mounting end cover is rotatably connected to a rotation support member for rotatably supporting both ends of the transmission shaft; and the mounting sleeve is fixed to the rotation support member.

[0012] Furthermore, mounting protrusions are formed at both ends of the transmission shaft respectively; the rotating support is formed with a mounting recess for matching the mounting protrusions; the transmission shaft is inserted into the mounting recess through the mounting protrusions to rotate coaxially with the rotating support.

[0013] Furthermore, the spline sleeve is pre-installed with the rotating support member via pins.

[0014] The benefit of the present invention lies in that the reliability testing platform provided is convenient for rapid disassembly and replacement of the fork connecting shaft. When replacing the fork, the spline shaft can be quickly removed and installed from the coupling. The operation is fast and convenient, and the installation accuracy is high, which saves work hours and can improve the testing efficiency of the fork. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a reliability testing platform for facilitating rapid disassembly and replacement of a fork connecting shaft according to the present invention;

[0016] Figure 2 yes Figure 1 A cross-sectional view of a reliability test platform for facilitating quick disassembly and replacement of a fork connecting shaft;

[0017] Figure 3 yes Figure 2 A partial enlarged view of the reliability test platform for quick disassembly and replacement of the fork connecting shaft;

[0018] Figure 4 yes Figure 1 A schematic diagram of a partial structure of a reliability test platform for facilitating rapid disassembly and replacement of a fork connecting shaft;

[0019] Figure 5 yes Figure 4 A partial enlarged view of the reliability test platform for quick disassembly and replacement of the fork connecting shaft;

[0020] Figure 6 yes Figure 1 A partial enlarged view of the reliability test platform for quick disassembly and replacement of the fork connecting shaft;

[0021] Figure 7 It is a schematic diagram of a fork mounted on a reliability test platform that facilitates quick disassembly and replacement of the fork connecting shaft;

[0022] A reliability testing platform 10 for facilitating rapid disassembly and replacement of a fork connecting shaft, a mounting frame 11, a motor 12, a reducer 13, a square head milling flat 14, an installation end cover 15, a spline shaft sleeve 16, a mounting sleeve 161, a square hole 1611, a clamping sleeve 162, a transmission shaft 17, a square protrusion 171, a mounting protrusion 172, a rotating support 18, a mounting recess 181, a pin 19, a spline shaft 20, a chamfer 201, a lifting ring 202, a manual pressure clamp 21, and a fork 100. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 As shown, a reliability test platform 10 of the present invention is convenient for quick replacement of the fork connecting shaft, comprising: a mounting frame 11, a motor 12 and a reducer 13. When testing the fork 100, the fork 100 is mounted on the mounting frame 11, and then the motor 12 drives one end of the fork 100 through the reducer 13, so as to test the telescopic performance of the fork 100. The motor 12 and the reducer 13 are mounted on the mounting frame 11.

[0025] like Figure 2 and Figure 3 As shown, a further structure of the present scheme is provided at the output end of the reducer 13. The square-headed milling flat 14 is used for quickly installing the spline shaft 20 of the fork 100. The square-headed milling flat 14 is symmetrically provided with mounting end covers 15 on both sides. The mounting end cover 15 is rotatably provided with a spline sleeve 16. The spline sleeve 16 is used to install the spline shaft 20. The spline shaft 20 can be detachably installed in the spline sleeve 16, so as to facilitate the removal of the spline shaft 20 when the fork 100 is replaced. A transmission shaft 17 is provided in the square-headed milling flat 14. Two spline sleeves 16 are respectively connected to the two ends of the transmission shaft 17. The transmission shaft 17 is used to connect the output shaft of the reducer 13 to transmit power to the spline sleeve 16, thereby driving the spline shaft 20 to rotate through the spline sleeve 16, and then driving the telescopic structure of the fork 100 through the spline shaft 20.

[0026] Specifically, when testing the fork 100, first install the two forks 100 on the mounting frame 11 respectively. When the installation is completed, the spline shaft holes of the driving parts of the two forks 100 for inserting the spline shaft 20 are aligned with the spline shaft holes of the spline shaft sleeve 16 respectively. Then the spline shaft 20 passes through the spline shaft hole of the driving part of the fork 100 and is inserted into the spline shaft hole of the spline shaft 20. At this time, the spline shaft 20 and the spline shaft sleeve 16 can rotate coaxially. This is to start the motor 12, and the power of the motor 12 is transmitted to the spline shaft sleeve 16 through the reducer 13 and the transmission shaft 17 in turn, so that the spline shaft sleeve 16 can be driven to rotate. The spline shaft sleeve 16 drives the spline shaft 20 to rotate synchronously when rotating. The spline shaft 20 drives the driving part to rotate through the spline shaft hole of the driving part of the fork 100, so that the fork 100 is driven to extend and retract through the driving part, and the test of the fork 100 is completed. When the fork 100 needs to be replaced, the spline shaft 20 can be directly removed from the spline shaft sleeve 16. After the new fork 100 to be tested is installed, the spline shaft 20 is passed through the spline shaft hole of the fork 100 driving member and inserted into the spline shaft hole of the spline shaft 20. When the fork 100 is replaced, the reliability test platform 10 that facilitates the rapid replacement of the fork connecting shaft does not need to remove the coupling, and the spline shaft 20 can be quickly disassembled and installed, which is fast and convenient to operate, saves work hours, and improves the test efficiency of the fork 100.

[0027] As a specific implementation, the mounting end cover 15 is detachably connected to the square head milling flat 14 through internal milling flat snap-fit, and the mounting structure is simple and easy to disassemble.

[0028] As a specific embodiment, a chamfer 201 is formed at one end of the spline shaft 20. The chamfer 201 is used to guide the spline shaft 20 to be quickly inserted into the spline shaft sleeve 16, thereby improving the installation efficiency of the spline shaft 20. When such a spline shaft 20 installation structure is pre-installed, the keyway direction of the spline shaft 20 does not need to be installed in alignment, and a lifting ring 202 is provided at the other end of the spline shaft 20. The lifting ring 202 is used for the staff to hold to insert or pull out the spline shaft 20, thereby improving the disassembly and assembly efficiency of the spline shaft 20.

[0029] like Figure 3 As shown in the figure, a specific implementation of the present scheme is shown, and the spline sleeve 16 includes: a mounting sleeve 161 and a clamping sleeve 162. The clamping sleeve 162 is fixed to the outer periphery of the mounting sleeve 161 by screws to press and fix the spline shaft 20 in the mounting sleeve 161. The spline shaft 20 is key-connected with the clamping sleeve 162, so that the torque of the spline sleeve 16 is transmitted to the spline shaft 20. Among them, the mounting sleeve 161 is formed with a square hole 1611. A square protrusion 171 is formed at the end of the transmission shaft 17. The mounting sleeve 161 is sleeved on the outer periphery of the square protrusion 171 through the square hole 1611 to rotate coaxially with the transmission shaft 17. Such a transmission structure is simple and has a high coaxial accuracy.

[0030] like Figure 4 and Figure 5 As shown in , it is a specific implementation of the present scheme, the mounting end cover 15 is rotatably connected with a rotating support 18. The rotating support 18 is used to rotatably support the two ends of the transmission shaft 17. The mounting sleeve 161 is fixed to the rotating support 18 so as to be able to rotate coaxially with the rotating support 18. Mounting protrusions 172 are respectively formed at both ends of the transmission shaft 17. The rotating support 18 is formed with a mounting recess 181 for matching the mounting protrusion 172. The transmission shaft 17 is inserted into the mounting recess 181 through the mounting protrusion 172 so as to be able to rotate coaxially with the rotating support 18. Through such two-stage coaxial rotation, not only the torque transmission efficiency can be guaranteed, but also the high-precision coaxial rotation between the spline shaft 20 and the transmission shaft 17 can be guaranteed, and the transmission stability of the mechanical structure is better.

[0031] like Figure 6 As shown, the spline sleeve 16 is pre-installed with the rotating support 18 of the mounting end cover 15 through the pin 19. This improves the installation efficiency and the installation accuracy. The rotating support 18 is provided with a pin 19, and the spline sleeve 16 is formed with a hole for inserting the pin 19. During installation, the pin 19 is inserted into the hole formed by the spline sleeve 16.

[0032] like Figure 7 As shown, it is a schematic diagram of a fork 100 installed on a reliability test platform 10 for facilitating rapid disassembly of the fork connecting shaft. The fork 100 is fixed to the reliability test platform 10 for facilitating rapid disassembly of the fork connecting shaft by a manual clamp 21. The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and all technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A reliability testing platform for facilitating rapid disassembly and replacement of a fork connecting shaft, comprising: A mounting frame, a motor and a reducer for mounting a fork; the motor and the reducer are mounted on the mounting frame; the reducer is characterized in that a square head milling flat is provided at the output end for quickly mounting a spline shaft of the fork; mounting end covers are symmetrically provided on both sides of the square head milling flat; a spline shaft sleeve for mounting a spline shaft is rotatably provided on the mounting end cover; the spline shaft is detachably mounted in the spline shaft sleeve; a transmission shaft for connecting the output shaft of the reducer is provided in the square head milling flat; two spline shaft sleeves are respectively connected to the two ends of the transmission shaft; The mounting end cover is detachably connected to the square head milling flat by means of an internal milling flat snap fit; The spline shaft sleeve comprises: a mounting sleeve and a compression sleeve; the compression sleeve is fixed to the outer periphery of the mounting sleeve by screws to press-fit the spline shaft into the mounting sleeve; the spline shaft is key-connected with the compression sleeve; The installation sleeve is formed with a square hole; the end of the transmission shaft is formed with a square convex portion; the installation sleeve is sleeved on the outer periphery of the square convex portion through the square hole to rotate coaxially with the transmission shaft.

2. The reliability testing platform for facilitating rapid replacement of the fork connecting shaft according to claim 1 is characterized in that: One end of the spline shaft is formed with a chamfer for guiding the spline shaft to be inserted into the spline sleeve.

3. The reliability testing platform for facilitating rapid replacement of the fork connecting shaft according to claim 1 is characterized in that: The other end of the spline shaft is provided with a lifting ring for a worker to hold to insert or pull out the spline shaft.

4. The reliability testing platform for facilitating rapid replacement of a fork connecting shaft according to claim 1, characterized in that: The mounting end cover is rotatably connected to a rotation support member for rotatably supporting the two ends of the transmission shaft; the mounting sleeve is fixed to the rotation support member.

5. The reliability testing platform for facilitating rapid replacement of the fork connecting shaft according to claim 4 is characterized in that: The transmission shaft is respectively formed with mounting protrusions at both ends; the rotation support is formed with a mounting recess for matching the mounting protrusions; the transmission shaft is inserted into the mounting recess through the mounting protrusions to rotate coaxially with the rotation support.

6. The reliability testing platform for facilitating rapid replacement of a fork connecting shaft according to claim 5, characterized in that: The spline sleeve is pre-installed with the rotation support member via pins.

Images