Disassembly and assembly tool for torque limiter and usage method

Abstract

The present invention discloses a disassembly and assembly tool for a torque limiter, comprising an operating rod, a spline sleeve, a limit block and a limit sleeve; the operating rod has a working end for assembling with the spline sleeve; the limit block is connected to a housing of the torque limiter through a limit pin, and the limit block is driven to rotate about the central axis of the limit pin; the limit sleeve has an adjustment connection end I for connecting with the operating rod and an adjustment connection end II for connecting with the limit block, the limit sleeve slides on the operating rod through the adjustment connection end I, the limit block has a plurality of stop grooves, and the limit sleeve is limited to any one of the stop grooves through the adjustment connection end II, so that the limit sleeve can be limitedly slidably set on the operating rod through the limit block; the integrated torque limiter can be easily disassembled, and the integrity of the torque limiter is maintained, thereby reducing the disassembly and assembly costs.

Description

Technical Field

[0001] The present invention relates to the field of disassembly and assembly tools for torque limiters, and in particular to a disassembly and assembly tool for a torque limiter and a use method thereof. Background Art

[0002] The aftermarket needs to remove the torque limiter when maintaining core components such as the engine or hybrid box. If the torque limiter is a split type, you can first remove the torque limiter housing and then remove the fastening bolts.

[0003] However, when the torque limiter is an integral type, it is more troublesome to disassemble it. It is necessary to either destroy the riveted pin or the torque limiter hub before removing the fastening bolts. This damage is irreversible, time-consuming and labor-intensive, and the replacement cost is high.

[0004] Either use the corresponding special disassembly tool to dismantle it, because there is excessive torque during the operation of the engine or hybrid box (the torque limiter slips), which will cause a certain rotation angle difference between the torque limiter's disc hub bolt avoidance hole and the flexible flywheel disc bolt through hole after use, that is, the fastening bolt position of the torque limiter and the engine and the torque limiter disc hub bolt avoidance hole have an angle difference, which is no longer the center position under the initial installation. At this time, conventional disassembly tooling cannot directly remove the bolt through the torque limiter disc hub bolt avoidance hole.

[0005] Therefore, in order to solve the above problems, a disassembly and assembly tool for a torque limiter and a method of use are needed, which can easily disassemble the integrated torque limiter while maintaining the integrity of the torque limiter and reducing the disassembly and assembly costs. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a disassembly and assembly tool and a method for use for a torque limiter, which can easily disassemble the integrated torque limiter while maintaining the integrity of the torque limiter and reducing the disassembly and assembly costs.

[0007] The disassembly and assembly tool for a torque limiter of the present invention comprises an operating rod, a spline sleeve, a limiting block and a limiting sleeve;

[0008] The operating rod has a working end for assembling with a spline sleeve, and the spline sleeve has a limiting connection end I for detachably fixing with the working end and a limiting connection end II for detachably fixing with a spline hole of a torque limiter;

[0009] The limit block is connected to the housing of the torque limiter via a limit pin. The limit block is driven to rotate about the central axis of the limit pin. The housing of the torque limiter has a functional hole for limiting the limit pin. The central axis of the limit pin is parallel to the central axis of the spline hole of the torque limiter.

[0010] The limit sleeve has an adjustment connection end I for connecting to the operating rod and an adjustment connection end II for connecting to the limit block. The limit sleeve slides on the operating rod through the adjustment connection end I. The limit block has a plurality of stop grooves. The limit sleeve is limited in any one of the stop grooves through the adjustment connection end II, so that the limit sleeve can be slidingly set on the operating rod in a limited manner through the limit block.

[0011] Furthermore, the working end is formed by a downwardly protruding bottom surface of the operating rod, and the circumferential outer wall of the operating rod has an outer anti-rotation surface; the position-limiting connecting end I is formed by a downwardly recessed top surface of the spline sleeve, and the circumferential inner wall of the position-limiting connecting end I has an inner anti-rotation surface; the spline sleeve is limited on the operating rod by the engagement of the outer anti-rotation surface and the inner anti-rotation surface;

[0012] The limiting connection end II is a spline shaft adapted to the spline hole of the torque limiter.

[0013] Furthermore, both lateral ends of the operating rod do not exceed the radial periphery of the spline shaft.

[0014] Furthermore, the adjustment connection end I is an annular hoop sleeved on the operating rod, so that the limiting sleeve is driven to slide along the length direction of the operating rod;

[0015] The adjusting connecting end II is a cylindrical pin fixed to the bottom of the annular hoop, and the central axis of the cylindrical pin is parallel to the central axis of the spline hole of the torque limiter.

[0016] Furthermore, the limiting block is limited between the operating rod and the housing of the torque limiter by a limiting pin; and a plurality of the stopping grooves are distributed in the radial direction of the limiting pin.

[0017] Furthermore, a plurality of the retaining grooves are opened along any direction perpendicular to the central axis of the limiting pin, and the plurality of the retaining grooves are distributed on the same side of the limiting pin.

[0018] Furthermore, the top surface of the limit block is recessed downward to form a stop groove, and several of the stop grooves are connected on the limit block through an adjustment groove, the notch of the stop groove is close to the limit pin, and the bottom of the stop groove is away from the limit pin.

[0019] Furthermore, the notch connecting the stop groove and the adjustment groove is inclined toward the limit pin. After the operating rod is assembled with the limit sleeve and the limit block, the extension line of the length direction of the stop groove itself intersects with the operating rod.

[0020] Furthermore, there are several spline sleeves, and the limiting connection ends I of several of the spline sleeves are the same, and the limiting connection ends II of several of the spline sleeves are different.

[0021] This solution also discloses a method for using the disassembly and assembly tool for the torque limiter, comprising the following steps:

[0022] S1. Determine the size of the torque limiter spline hole and select the type of spline sleeve;

[0023] S2. Assemble the spline sleeve through the spline hole of the torque limiter on the disc hub of the torque limiter, and assemble the limit block on the housing of the torque limiter through the limit pin;

[0024] S3. Fix the operating lever through the working end and the spline sleeve, and connect the operating lever through the limit sleeve and the limit block;

[0025] At this time, the adjustment connection end II of the limit sleeve is located in the adjustment groove of the limit block;

[0026] S4. The operating lever is rotated around the central axis of the torque limiter spline hole so that the bolt avoidance hole on the preset torque limiter hub and the corresponding bolt hole on the flexible flywheel disc have an operating overlap area;

[0027] The operational overlap area is the intersection of the bolt avoidance holes on the torque limiter hub and the corresponding bolt through holes on the flexible flywheel disc;

[0028] S5. The limit block is rotated around the center axis of the limit pin so that the adjustment connection end Ⅱ of the limit sleeve is limited in the stop groove close to it;

[0029] At this time, the spring on the torque limiter has a tension that makes the adjusting connection end II of the limit sleeve and the bottom of the stop groove close to each other, so that the adjusting connection end II is driven to abut against the bottom of the stop groove close to each other;

[0030] S6. Maintain the current state of the device and remove and install the corresponding bolts on the torque limiter;

[0031] S7. Repeat steps S4-S6 to remove the preset number of bolts on the torque limiter.

[0032] The beneficial effects of the present invention are as follows: the present invention discloses a disassembly and assembly tool and a method for using a torque limiter, wherein the spline sleeve connected to the spline hole of the torque limiter is adjusted by an operating rod so that the bolt avoidance hole on the preset torque limiter disc hub and the corresponding bolt through hole on the flexible flywheel disc have an operation overlapping area; in this state, the limiting block connected to the torque limiter housing is operated to limit the limiting sleeve on the operating rod, and the limiting sleeve is connected to the operating rod, so that the position of the operating rod is also determined and limited, thereby facilitating the operation overlapping area to be in a continuous overlapping state, facilitating the removal of the bolt, and can easily disassemble the integrated torque limiter while maintaining the integrity of the torque limiter, reducing the disassembly and assembly cost, and in the tool, there are multiple spline sleeves, multiple spline sleeves have the same limiting connection end I, and multiple spline sleeves have different limiting connection ends II; so that different models of torque limiters can be disassembled and assembled using this tool, and the tool is easy to carry, easy to disassemble and assemble, reliable to use and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0036] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0037] Figure 4 It is a side structural schematic diagram of the present invention;

[0038] Figure 5 For the present invention Figure 3 AA structural diagram;

[0039] Figure 6 For the present invention Figure 3 BB structural diagram;

[0040] Figure 7 The figure is a schematic structural diagram of a disassembly and assembly tool for a torque limiter according to the present invention. DETAILED DESCRIPTION

[0041] Figure 1It is a schematic diagram of the structure of the present invention. As shown in the figure, the top, bottom, upper and lower correspond to the top, bottom, upper and lower in the height direction, the transverse direction is the width direction of the operating rod 1, the front is the direction close to the torque limiter along the length direction of the operating rod 1, and the rear direction along the length direction of the operating rod 1 is opposite to the front direction. No further details are given here. The disassembly and assembly tool for the torque limiter in this embodiment includes an operating rod 1, a spline sleeve 2, a limit block 3 and a limit sleeve 4; the operating rod 1 has a working end for assembling with the spline sleeve 2, the spline sleeve 2 has a limit connection end Ⅰ201 for detachably fixing with the working end and a limit connection end Ⅱ202 for detachably fixing with the spline hole of the torque limiter; the limit block 3 is fixed by a limit The pin 5 is connected to the housing of the torque limiter, and the limit block 3 is driven to rotate with the central axis of the limit pin 5 as the axis. The housing of the torque limiter has a functional hole for limiting the limit pin 5, and the central axis of the limit pin 5 is parallel to the central axis of the spline hole of the torque limiter; the limit sleeve 4 has an adjustment connection end I401 for connecting to the operating rod 1 and an adjustment connection end II402 for connecting to the limit block 3, and the limit sleeve 4 slides on the operating rod 1 through the adjustment connection end I401, and the limit block 3 has several stop grooves 301, and the limit sleeve 4 is limited to any one of the stop grooves 301 through the adjustment connection end II402, so that the limit sleeve 4 can be limitedly slidably set on the operating rod 1 through the limit block 3. In this solution, the spline sleeve 2 connected to the spline hole of the torque limiter is adjusted by the operating rod 1 so that the bolt avoidance hole on the preset torque limiter hub and the corresponding bolt through hole on the flexible flywheel disc have an operational overlapping area; in this state, the limiting block 3 connected to the torque limiter housing is operated to limit the limiting sleeve 4 on the operating rod 1, and the limiting sleeve 4 is connected to the operating rod 1, so that the position of the operating rod 1 is also determined and limited, which is conducive to keeping the operational overlapping area in a continuous overlapping state, which is conducive to the disassembly of the bolt, and can easily disassemble the integrated torque limiter while maintaining the integrity of the torque limiter, reducing the disassembly and assembly costs. In this tool, there are several spline sleeves 2, and the limiting connection ends Ⅰ201 of several of the spline sleeves 2 are the same, and the limiting connection ends Ⅱ202 of several of the spline sleeves 2 are different; so that different models of torque limiters can be disassembled and assembled using this tool, and this tool is easy to carry, easy to disassemble and assemble, reliable to use and highly practical.

[0042] In this embodiment, the working end is formed by the bottom surface of the operating rod 1 protruding downward, and the circumferential outer wall of the operating rod 1 has an outer anti-rotation surface; the limiting connection end I201 is formed by the top surface of the spline sleeve 2 being recessed downward, and the circumferential inner wall of the limiting connection end I201 has an inner anti-rotation surface; the spline sleeve 2 is limited on the operating rod 1 by the engagement of the outer anti-rotation surface and the inner anti-rotation surface; the limiting connection end II202 is a spline shaft adapted to the spline hole of the torque limiter. As shown in the figure, the operating rod 1 is in the shape of a rectangular strip, and the working end is formed by the bottom surface of the front end of the operating rod 1 protruding downward. The working end is in the shape of a rectangular column extending from top to bottom, and the working end is perpendicular to the operating rod 1. The rear end of the operating rod 1 is the adjustment end; the adjustment end is provided with an adjustment handle 101, which is conducive to forming a labor-saving adjustment structure and facilitating the disassembly and assembly of the torque limiter. The circumferential outer wall of the rectangular column is the outer anti-rotation surface;

[0043] The spline sleeve 2 is cylindrical, and the top surface of the spline sleeve 2 is concave from top to bottom to form a rectangular cube groove-shaped limiting connection end I201, and the limiting connection end I201 is adapted to the working end, that is, the working end can be just inserted into the limiting connection end I201 and is limited in the circumferential direction by the limiting connection end I201. The limiting connection end II202 of the spline sleeve 2 located at the bottom of the limiting connection end I201 is a spline shaft adapted to the spline hole of the torque limiter to be operated, so that the operating rod 1 can effectively and reliably drive the spline sleeve 2 through the working end to adjust the preset torque limiter disc hub to overlap with the corresponding bolt through-hole on the flexible flywheel disc or have an operation overlapping area, which is conducive to the disassembly of the bolt.

[0044] In this embodiment, the transverse ends of the operating lever 1 do not extend beyond the radial circumference of the spline shaft. That is, as shown in the figure, the transverse ends of the operating lever 1 are located inward of the radial circumference of the spline shaft. This minimizes the obstruction of the torque limiter by the operating lever 1 during operation, making it easier to observe whether the bolt clearance holes on the torque limiter hub and the corresponding bolt holes on the flexible flywheel disc completely overlap or whether there is an effective operational overlap area, thereby improving assembly and disassembly efficiency and convenience.

[0045] In this embodiment, the adjustment connection end I401 is an annular hoop mounted on the operating rod 1, so that the limit sleeve 4 is driven to slide along the length direction of the operating rod 1; the adjustment connection end II402 is a cylindrical pin fixed at the bottom of the annular hoop, and the central axis of the cylindrical pin is parallel to the central axis of the spline hole of the torque limiter. As shown in the figure, the limit sleeve 4 can be driven to slide and be sleeved on the operating rod 1 through the adjusting connection end I 401, and the limit sleeve 4 is limited on the torque limiter by adjusting the connection end II 402 and cooperating with the limit block 3. The limit block 3 is limited in the height direction between the operating rod 1 and the housing of the torque limiter by the limit pin 5, and the limit block 3 can rotate with the limit pin 5 as the axis; several of the stop grooves 301 are distributed in the radial direction of the limit pin 5, and the limit sleeve 4 is limited to any one of the stop grooves 301 by adjusting the connection end II 402; and several of the stop grooves 301 are opened in any direction perpendicular to the central axis of the limit pin 5, and several of the stop grooves 301 are evenly distributed on the same side of the limit pin 5; as shown in the figure, the top surface of the limit block 3 is recessed downward to form the stop groove 301, and several of the stop grooves 301 are connected through the adjusting groove on the limit block 3. The notch of the movable groove 301 is close to the limit pin 5, and the bottom of the stopping groove 301 is away from the limit pin 5; the notch of the stopping groove 301 communicating with the adjusting groove is inclined toward the limit pin 5, and after the operating rod 1 is assembled with the limit block 3 through the limit sleeve 4, the extension line of the length direction of the stopping groove 301 itself intersects with the operating rod 1; further, several of the stopping grooves 301 are serrated and distributed on the same side of the limit groove, and the side notches of the stopping groove 301 are close to the limit pin 5, and the bottom of the stopping groove 301 is away from the limit pin 5; so that when the adjusting connection end II 402 of the limiting sleeve 4 is limited in the stop groove 301 close to it, the spring on the torque limiter has a tension that makes the adjusting connection end II 402 of the limiting sleeve 4 and the bottom of the stop groove 301 close to and matched with it close to each other, so that the adjusting connection end II 402 is driven to be held against the bottom of the stop groove 301 close to it.

[0046] This solution also discloses a method for using the disassembly and assembly tool for the torque limiter, comprising the following steps:

[0047] S1. Determine the size of the torque limiter spline hole and select the model of spline sleeve 2;

[0048] S2. Assemble the splined sleeve 2 onto the torque limiter's hub through the splined hole. Assemble the stopper block 3 onto the torque limiter's housing through the stopper pin 5. The torque limiter housing has a functional hole for mounting the stopper pin 5. The stopper pin 5 can be adapted to different functional holes and its diameter can be selectively adjusted to ensure that the stopper pin 5 fits the functional hole on the torque limiter housing.

[0049] S3. The operating lever 1 is fixed through the working end and the spline sleeve, and the operating lever 1 is connected to the limit block 3 through the limit sleeve 4;

[0050] At this time, the adjustment connection end II 402 of the limiting sleeve 4 is located in the adjustment groove of the limiting block 3;

[0051] S4. Toggle the operating lever 1 around the central axis of the torque limiter spline hole to rotate so that the preset bolt avoidance hole on the torque limiter hub and the corresponding bolt hole on the flexible flywheel disc have an operating overlap area;

[0052] The operation overlap area is the intersection area of the bolt avoidance hole on the torque limiter disc hub and the corresponding bolt through hole on the flexible flywheel disc. Furthermore, the operation overlap area is optimal when the bolt avoidance hole on the torque limiter disc hub and the corresponding bolt through hole on the flexible flywheel disc completely overlap, which is more conducive to the disassembly and installation of the bolts.

[0053] S5. The limit block 3 is rotated around the center axis of the limit pin 5, so that the adjustment connection end Ⅱ402 of the limit sleeve 4 is limited in the retaining groove 301 close thereto;

[0054] At this time, the spring on the torque limiter has a tension that brings the adjusting connection end II 402 of the limiting sleeve 4 and the bottom of the stop groove 301 close to and matched with it, so that the adjusting connection end II 402 is driven to abut against the bottom of the stop groove 301 close to it;

[0055] S6. Maintain the current state of the device and remove and install the corresponding bolts on the torque limiter;

[0056] S7. Repeat steps S4-S6 to remove the preset number of bolts on the torque limiter.

[0057] In this solution, the spline sleeve 2 connected to the spline hole of the torque limiter is adjusted by the operating rod 1 so that the bolt avoidance hole on the preset torque limiter hub and the corresponding bolt through hole on the flexible flywheel disc have an operational overlapping area; in this state, the limiting block 3 connected to the torque limiter housing is operated to limit the limiting sleeve 4 on the operating rod 1, and the limiting sleeve 4 is connected to the operating rod 1, so that the position of the operating rod 1 is also determined and limited, which is conducive to keeping the operational overlapping area in a continuous overlapping state, which is conducive to the disassembly of the bolt, and can easily disassemble the integrated torque limiter while maintaining the integrity of the torque limiter, reducing the disassembly and assembly costs. In this tool, there are several spline sleeves 2, and the limiting connection ends Ⅰ201 of several of the spline sleeves 2 are the same, and the limiting connection ends Ⅱ202 of several of the spline sleeves 2 are different; so that different models of torque limiters can be disassembled and assembled using this tool, and this tool is easy to carry, easy to disassemble and assemble, reliable to use and highly practical.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A disassembly and assembly tool for a torque limiter, characterized in that: It includes an operating rod, a spline sleeve, a limit block and a limit sleeve; The operating rod has a working end for assembling with a spline sleeve, and the spline sleeve has a limiting connection end I for detachably fixing with the working end and a limiting connection end II for detachably fixing with a spline hole of a torque limiter; The limit block is connected to the housing of the torque limiter via a limit pin. The limit block is driven to rotate about the central axis of the limit pin. The housing of the torque limiter has a functional hole for limiting the limit pin. The central axis of the limit pin is parallel to the central axis of the spline hole of the torque limiter. The limiting sleeve has an adjustment connection end I for connecting to the operating rod and an adjustment connection end II for connecting to the limiting block. The limiting sleeve slides on the operating rod through the adjustment connection end I. The limiting block has a plurality of stop grooves. The limiting sleeve is limited in any one of the stop grooves through the adjustment connection end II, so that the limiting sleeve can be limitedly slidably set on the operating rod through the limiting block. The working end is formed by a downwardly protruding bottom surface of the operating rod, and the circumferential outer wall of the operating rod has an outer anti-rotation surface; the position-limiting connecting end I is formed by a downwardly recessed top surface of the spline sleeve, and the circumferential inner wall of the position-limiting connecting end I has an inner anti-rotation surface; the spline sleeve is limited on the operating rod by the engagement of the outer anti-rotation surface and the inner anti-rotation surface; The limit connection end II is a spline shaft adapted to the spline hole of the torque limiter; The adjustment connection end I is an annular hoop sleeved on the operating rod, so that the limiting sleeve is driven to slide along the length direction of the operating rod; The adjusting connecting end II is a cylindrical pin fixed to the bottom of the annular hoop, and the central axis of the cylindrical pin is parallel to the central axis of the spline hole of the torque limiter.

2. The disassembly and assembly tool for a torque limiter according to claim 1, characterized in that: The transverse ends of the operating rod do not exceed the radial periphery of the spline shaft.

3. The disassembly and assembly tool for a torque limiter according to claim 1, characterized in that: The limiting block is limited between the operating rod and the housing of the torque limiter by a limiting pin; and a plurality of the stopping grooves are distributed in the radial direction of the limiting pin.

4. The disassembly and assembly tool for a torque limiter according to claim 3, characterized in that: The plurality of retaining grooves are opened along any direction perpendicular to the central axis of the limiting pin, and the plurality of retaining grooves are distributed on the same side of the limiting pin.

5. The disassembly and assembly tool for a torque limiter according to claim 4, characterized in that: The top surface of the limit block is recessed downward to form a stop groove, and a plurality of the stop grooves are connected on the limit block through an adjustment groove, the notch of the stop groove is close to the limit pin, and the bottom of the stop groove is away from the limit pin.

6. The disassembly and assembly tool for a torque limiter according to claim 5, characterized in that: The notch communicating with the adjusting groove is inclined toward the limit pin. After the operating rod is assembled with the limit sleeve and the limit block, the extension line of the length direction of the stopping groove itself intersects with the operating rod.

7. The disassembly and assembly tool for a torque limiter according to claim 1, characterized in that: There are a plurality of spline sleeves, and the limiting connection ends I of a plurality of the spline sleeves are the same, while the limiting connection ends II of a plurality of the spline sleeves are different.

8. A method for using a disassembly tool for a torque limiter according to any one of claims 1 to 7, characterized in that: The steps are as follows: S1. Determine the size of the torque limiter spline hole and select the type of spline sleeve; S2. Assemble the spline sleeve through the spline hole of the torque limiter on the disc hub of the torque limiter, and assemble the limit block on the housing of the torque limiter through the limit pin; S3. Fix the operating lever through the working end and the spline sleeve, and connect the operating lever through the limit sleeve and the limit block; At this time, the adjustment connection end II of the limit sleeve is located in the adjustment groove of the limit block; S4. The operating lever is rotated around the central axis of the torque limiter spline hole so that the bolt avoidance hole on the preset torque limiter hub and the corresponding bolt hole on the flexible flywheel disc have an operating overlap area; The operational overlap area is the intersection of the bolt avoidance holes on the torque limiter hub and the corresponding bolt through holes on the flexible flywheel disc; S5. The limit block is rotated around the center axis of the limit pin so that the adjustment connection end Ⅱ of the limit sleeve is limited in the stop groove close to it; At this time, the spring on the torque limiter has a tension that makes the adjusting connection end II of the limit sleeve and the bottom of the stop groove close to each other, so that the adjusting connection end II is driven to abut against the bottom of the stop groove close to each other; S6. Maintain the current state of the device and remove and install the corresponding bolts on the torque limiter; S7. Repeat steps S4-S6 to remove the preset number of bolts on the torque limiter.

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