Front axle kingpin dismounting device

Abstract

The utility model relates to a front axle kingpin dismounting device relates to automobile parts dismounting technical field, including support washer, the inside of support washer is equipped with accommodating groove, the clearance fit of accommodating groove is equipped with thrust bearing, the middle part of support washer and thrust bearing is equipped with round via, two round vias are jointly sleeved with loading sleeve, the inboard wall of one end of loading sleeve is equipped with internal thread, and the outboard wall of the other end of loading sleeve is sleeved with loading arm, loading arm with loading sleeve is detachably connected. The device is small in size, convenient to install, strong in universality, wide in application range, can realize the dismounting of heavy vehicle front axle kingpin under a variety of scenes such as outdoors, solve the problem that heavy vehicle front axle kingpin of prior art is difficult to dismount in outdoor scene.

Description

Technical Field

[0001] This utility model relates to the field of automotive component disassembly and assembly technology, and in particular to a front axle kingpin disassembly device. Background Technology

[0002] After a front axle kingpin wear test is conducted on a heavy-duty vehicle, the sample needs to be disassembled for inspection. However, due to the large interference fit between the kingpin and the front axle, traditional hammering methods cannot remove it and pose safety hazards; a press fitting machine is required for disassembly. Because of the size of the front axle, a large operating space is required, and the press fitting machine is too bulky to be carried on the vehicle. Therefore, when testing the actual vehicle outdoors, a press fitting machine cannot be used to remove the kingpin.

[0003] CN208697316U provides a front axle kingpin removal device, including a base, a jack, a drive mechanism for driving the jack, and a support structure. The jack is a hydraulic jack or a pneumatic jack, and is fixedly connected to the support structure. The drive mechanism is mounted on the base, and the base is rotatably connected to the support structure via a rotating connector. This device uses a hydraulic or pneumatic jack instead of a manual jack. When the pressure of the hydraulic or pneumatic jack is greater than the tightness of the connection between the kingpin and the front axle, the kingpin will slowly descend under the action of the jack. However, the prior art device is large and heavy, making it unsuitable for portable use.

[0004] CN202922518U describes a device for removing the kingpin of a front axle steering knuckle, belonging to the category of automotive repair tools. Specifically, it relates to a device for removing the kingpin of a front axle steering knuckle. This device includes a removal frame and a clamping bolt. The removal frame is a detachable frame formed by connecting upper and lower pressure plates with four bolts. Both the upper and lower pressure plates have a threaded through hole at their center. The clamping bolt is installed in the through hole of the upper pressure plate. The distance between the upper and lower pressure plates in the removal frame is 430-530 mm. The diameter of the threaded through hole at the center of the upper pressure plate is 30-40 mm, and the diameter of the through hole at the center of the lower pressure plate is 70-80 mm. However, this prior art is only applicable to small vehicles with small interference fits and cannot be applied to heavy vehicles with large interference fits. Utility Model Content

[0005] The purpose of this utility model is to provide a front axle kingpin removal device. This device is small in size, easy to install, highly versatile, and widely applicable. It can remove the front axle kingpin of heavy vehicles in various scenarios, including outdoor environments, and solves the problem that the front axle kingpin of heavy vehicles is difficult to remove in outdoor scenarios in the prior art.

[0006] This utility model provides the following solution.

[0007] A front axle kingpin removal device includes a support washer, the support washer having an internal receiving groove, a thrust bearing being fitted into the receiving groove with clearance, a circular through hole being provided in the middle of both the support washer and the thrust bearing, a loading sleeve being sleeved in both circular through holes, an internal thread being provided on the inner sidewall of one end of the loading sleeve, and a loading arm being sleeved on the outer sidewall of the other end of the loading sleeve, the loading arm being detachably connected to the loading sleeve.

[0008] Furthermore, the support washer has a circular stepped structure, including a first step and a second step. The top view outlines of the first step and the second step are concentric circles, and the outer diameter of the first step is smaller than the outer diameter of the second step. The second step is hollow to form a cylindrical receiving groove, and a thrust bearing is provided in the receiving groove with clearance fit.

[0009] The support washer has a circular stepped structure, which allows the first step to be embedded in and fit against the recessed part of the steering knuckle around the kingpin, thus stabilizing the support and reducing swaying; the thrust bearing clearance fit is placed in the receiving groove, which can better prevent misalignment and falling off.

[0010] Furthermore, the loading sleeve includes a connecting part, which is a cylindrical structure. The inner sidewall of the connecting part is provided with an internal thread. The top end of the connecting part is fixedly connected to a driving part, which is a disc structure. The loading arm is sleeved on the outer arm of the driving part.

[0011] The connecting part can pass through the thrust bearing and the support washer to connect with the kingpin, and the lower surface of the drive part contacts the upper surface of the thrust bearing, which can drive the thrust bearing to rotate.

[0012] Furthermore, the connecting end of the loading arm and the drive unit is provided with a connecting ring, and a handle is fixedly connected to the connecting ring; a plurality of threaded holes are provided circumferentially on the side wall of the drive unit; a through hole corresponding to the threaded hole is provided on the side wall of the connecting ring, and a bolt is screwed into the through hole and the threaded hole.

[0013] Bolts pass through the through holes and connect to the threaded holes, thereby fixing the loading arm to the drive unit; the operating angle of the loading arm can be adjusted by connecting the through holes and threaded holes at different positions.

[0014] Furthermore, the thrust bearing includes at least two thrust washers, with rolling elements slidably contacting adjacent thrust washers.

[0015] Thrust bearings are generally composed of two or more thrust washers and several rolling elements. Different combinations of thrust washers and rolling elements can be used as needed.

[0016] Furthermore, the thrust washer is made of GCr15 bearing steel.

[0017] The two thrust washers are made of GCr15 bearing steel, with a smooth surface and sufficient rigidity and hardness.

[0018] Furthermore, the handle of the loading arm is a telescopic rod structure.

[0019] The lever arm length can be adjusted by telescoping, thus adapting to the disassembly of kingpins with different interference fits and improving versatility.

[0020] Furthermore, the upper inner wall of the receiving groove of the support washer is provided with a limiting flange, and the thrust bearing can be limited to the receiving groove.

[0021] The support washer is integrated with the thrust bearing, making installation and removal more time-saving and convenient.

[0022] Furthermore, the outer side wall of the second step of the support washer is provided with external threads, the limiting retaining ring is screwed into the external threads, and the limiting flange is disposed on the top of the limiting retaining ring.

[0023] The limit retaining ring can be flexibly disassembled, making it easy to replace the thrust bearing inside the support washer, which improves versatility while facilitating installation and disassembly.

[0024] Furthermore, a force transmission washer is fixedly connected to the lower surface of the driving part of the loading sleeve, and the force transmission washer is sleeved on the outside of the connecting part. The diameter of the force transmission washer is smaller than the diameter of the inner ring of the limiting flange, and the force transmission washer can fit and contact the upper surface of the thrust washer under the limiting flange.

[0025] The diameter of the force transmission washer is smaller than the diameter of the inner ring of the limiting flange, so that it can fit against the upper surface of the thrust washer under the limiting flange, thereby avoiding the limiting flange from affecting the contact and force transmission between the loading sleeve and the thrust bearing.

[0026] This utility model has the following advantages compared with the prior art:

[0027] This utility model provides a front axle kingpin removal device, which converts rotational torque into outward pull-out force of the front axle kingpin through a support washer, a loading sleeve, and a loading arm, and uses a thrust bearing to reduce the friction force during device rotation. The device is compact, easy to install, highly versatile, and widely applicable, and can remove the front axle kingpin of heavy vehicles in various scenarios such as outdoors, solving the problem of difficulty in removing the front axle kingpin of heavy vehicles in outdoor scenarios in the prior art. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Appendix Figure 1 This is an exploded view of the front axle kingpin disassembly device described in this utility model;

[0030] Appendix Figure 2 This is an assembly diagram of the front axle kingpin removal device described in this utility model;

[0031] Appendix Figure 3 This is a schematic diagram of the loading arm structure described in Example 2;

[0032] Appendix Figure 4 This is a schematic diagram of the support washer described in Example 3;

[0033] Appendix Figure 5 This is a schematic diagram of the support washer described in Example 4;

[0034] Appendix Figure 6 This is a schematic diagram of the loading sleeve described in Examples 3 and 4.

[0035] In the picture:

[0036] 1. Support washer; 11. First step; 12. Second step; 13. Limiting retaining ring; 14. Limiting flange; 2. Thrust bearing; 21. Thrust washer; 22. Rolling element; 3. Loading sleeve; 31. Connecting part; 32. Drive part; 33. Force transmission washer; 4. Loading arm; 41. Connecting ring; 42. Handle. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0039] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0040] It should be understood that although the terms first, second, third, etc., may be used in the embodiments of this application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, first may also be referred to as second without departing from the scope of the embodiments of this application, and similarly, second may also be referred to as first.

[0041] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0042] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0043] It should be noted that any symbols and / or numbers present in the specification that are not marked in the accompanying drawings are not reference numerals.

[0044] Example 1, please refer to Figure 1 and Figure 2As shown, this embodiment provides a front axle kingpin removal device, including a support washer 1. The support washer 1 has a circular stepped structure, including two steps. The cross-section of the two steps is a concentric circle, wherein the diameter of the first step 11 is smaller than that of the second step 12. The second step 12 is hollow to form a cylindrical receiving groove. A thrust bearing 2 is detachably fitted in the receiving groove. A circular through hole is provided in the middle of both the support washer 1 and the thrust bearing 2. A loading sleeve 3 is fitted inside the circular through hole. The loading sleeve 3 includes a connecting part 31, which has a cylindrical structure and an internal thread on its inner wall. A driving part 32 is fixedly connected to the top of the connecting part 31. The driving part 32 has a circular structure and a plurality of threaded holes are provided circumferentially on the side wall of the driving part 32. A loading arm 4 is fitted on the outer side of the driving part 32. The loading arm 4 is detachably connected to the threaded holes on the driving part 32 by bolts.

[0045] Specifically, the thrust bearing 2, also known as a thrust stop bearing, consists of two or more thrust washers 21 and several rolling elements 22. Generally, the thrust washers 21 are divided into shaft plates and seat plates, and the most common type of rolling elements 22 is a combination of iron or copper cages. Thrust bearings 2 are divided into thrust ball bearings and thrust roller bearings. In this embodiment, roller bearings are used. Preferably, the thrust bearing 2 includes two thrust washers 21, with rolling elements 22 slidably contacting between the two thrust washers 21. The two thrust washers 21 are made of GCr15 bearing steel, with a smooth surface and sufficient rigidity and hardness. A connecting ring 41 is provided at the connection end between the loading arm 4 and the drive unit 32. A handle 42 is fixedly connected to the connecting ring 41. The side wall of the connecting ring 41 has through holes corresponding to the threaded holes on the drive unit 32. Bolts pass through the through holes and connect to the threaded holes, thereby fixing the loading arm 4 to the drive unit 32. The operating angle of the loading arm 4 can be adjusted by connecting the through holes and threaded holes at different positions.

[0046] In use, first, the support washer 1 is fitted onto the front axle kingpin, so that the first step 11 fits against the recessed part of the steering knuckle around the kingpin; then, the thrust bearing 2 is placed in the receiving groove of the second step 12 with clearance fit; then, the connecting part 31 of the loading sleeve 3 passes through the thrust bearing 2 and the support washer 1 in sequence, and is threadedly connected to the kingpin; then, the connecting ring 41 of the loading arm 4 is fitted onto the driving part 32 of the loading sleeve 3, the operating angle is adjusted so that the through hole and the threaded hole are connected, and it is fixed with bolts, thus completing the assembly of the device and the connection with the kingpin; rotate the loading arm 4 to drive the loading sleeve 3 to rotate, and then move the kingpin upward through the thread until it is pulled out; for kingpins of different lengths, different thrust washer 21 thicknesses and loading sleeve 3 connecting part 31 lengths can be selected to ensure that there is enough screw-in space inside the connecting part 31 during rotation to screw out the kingpin.

[0047] Example 2, please refer to Figure 3As shown, this embodiment provides a front axle kingpin removal device, which improves the structure of the loading arm 4 based on embodiment 1.

[0048] Specifically, the connecting end of the loading arm 4 and the drive unit 32 is provided with a connecting ring 41, and a handle 42 is fixedly connected to the connecting ring 41; the handle 42 of the loading arm 4 is a telescopic rod structure, which can change the length of the lever arm by telescoping; the side wall of the connecting ring 41 is provided with a through hole corresponding to the threaded hole on the drive unit 32, and the bolt passes through the through hole and connects with the threaded hole, thereby fixing the loading arm 4 and the drive unit 32; the handle 42 of the loading arm 4 is a telescopic rod structure that can be adjusted in length, and the pull-out force can be changed by changing the torque, thereby being suitable for disassembling kingpins with different interference fits and improving versatility.

[0049] Example 3, please refer to Figure 4 and Figure 6 As shown, this embodiment provides a front axle kingpin removal device, which improves the structure of the support washer 1 and the loading sleeve 3 based on embodiment 1 or 2, and integrates the support washer 1 with the thrust bearing 2.

[0050] Specifically, a limiting flange 14 is provided at the edge of the receiving groove of the support washer 1 to limit the thrust bearing 2 within the receiving groove, thereby integrating the support washer 1 and the thrust bearing 2, making installation and removal more time-saving and convenient; a force transmission washer 33 is fixedly connected to the lower surface of the drive part 32 of the loading sleeve 3. The diameter of the force transmission washer 33 is smaller than the diameter of the inner ring of the limiting flange 14, and it can fit against the upper surface of the thrust washer 21 under the limiting flange 14, thereby preventing the limiting flange 14 from affecting the contact and force transmission between the loading sleeve 3 and the thrust bearing 2.

[0051] Example 4, please refer to Figure 5 and Figure 6 As shown, this embodiment provides a front axle kingpin removal device, which improves the structure of the support washer 1 based on embodiment 3, making the limiting flange 14 detachable.

[0052] Specifically, an external thread is provided on the outer wall of the second step 12 of the support washer 1, through which a limiting retaining ring 13 is connected. A limiting flange 14 is provided on the top of the limiting retaining ring 13 to confine the thrust bearing 2 within the receiving groove, thereby integrating the support washer 1 and the thrust bearing 2, making installation and removal more time-saving and convenient. A force transmission washer 33 is fixedly connected to the lower surface of the drive part 32 of the loading sleeve 3. The diameter of the force transmission washer 33 is smaller than the diameter of the inner ring of the limiting flange 14, allowing it to fit against the upper surface of the thrust washer 21 under the limiting flange 14, thus preventing the limiting flange 14 from affecting the contact and force transmission between the loading sleeve 3 and the thrust bearing 2. Compared with embodiment 3, the limiting retaining ring 13 provided in this embodiment can be flexibly disassembled, facilitating the replacement of the thrust bearing 2 inside the support washer 1, and improving versatility.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A front axle kingpin removal device, characterized in that, The device includes a support washer (1), which has an internal receiving groove. A thrust bearing (2) is fitted inside the receiving groove with clearance. Both the support washer (1) and the thrust bearing (2) have a circular through hole in the middle. A loading sleeve (3) is fitted into both of the circular through holes. One end of the loading sleeve (3) has an internal thread on its inner sidewall. The other end of the loading sleeve (3) has a loading arm (4) fitted onto its outer sidewall. The loading arm (4) is detachably connected to the loading sleeve (3).

2. The front axle kingpin removal device according to claim 1, characterized in that, The support washer (1) is a circular stepped structure, including a first step (11) and a second step (12). The top view outlines of the first step (11) and the second step (12) are concentric circles, and the outer diameter of the first step (11) is smaller than the outer diameter of the second step (12). The second step (12) is hollow to form a cylindrical receiving groove, and a thrust bearing (2) is provided in the receiving groove with clearance fit.

3. The front axle kingpin removal device according to claim 1, characterized in that, The loading sleeve (3) includes a connecting part (31), which is a cylindrical structure. The inner sidewall of the connecting part (31) is provided with an internal thread. The top end of the connecting part (31) is fixedly connected to a driving part (32), which is a disc structure. The loading arm (4) is sleeved on the outer sidewall of the driving part (32).

4. The front axle kingpin removal device according to claim 3, characterized in that, The loading arm (4) and the drive unit (32) are connected by a connecting ring (41), and a handle (42) is fixedly connected to the connecting ring (41); the drive unit (32) has a number of threaded holes along the circumferential direction on its side wall; the connecting ring (41) has a through hole corresponding to the threaded hole on its side wall, and the bolt is screwed into the through hole and the threaded hole.

5. The front axle kingpin removal device according to claim 1, characterized in that, The thrust bearing (2) includes at least two thrust washers (21), and a rolling element (22) is slidably contacted between two adjacent thrust washers (21).

6. The front axle kingpin removal device according to claim 5, characterized in that, The thrust washer (21) is made of GCr15 bearing steel.

7. The front axle kingpin removal device according to claim 1, characterized in that, The handle (42) of the loading arm (4) is a telescopic rod structure.

8. The front axle kingpin removal device according to any one of claims 1-7, characterized in that, The support washer (1) has a limiting flange (14) on the inner wall of the receiving groove, and the thrust bearing (2) can be limited to the receiving groove.

9. The front axle kingpin removal device according to claim 8, characterized in that, The outer side wall of the second step (12) of the support washer (1) is provided with an external thread, the limiting retaining ring (13) is screwed into the external thread, and the limiting flange (14) is disposed on the top of the limiting retaining ring (13).

10. The front axle kingpin removal device according to claim 9, characterized in that, A force transmission washer (33) is fixedly connected to the lower surface of the driving part (32) of the loading sleeve (3), and the force transmission washer (33) is sleeved on the outside of the connecting part (31). The diameter of the force transmission washer (33) is smaller than the diameter of the inner ring of the limiting flange (14). The force transmission washer (33) can fit and contact the upper surface of the thrust washer (21) under the limiting flange (14).

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