Automotive brake drum disassembly machine

Abstract

This invention provides an automotive brake drum disassembly machine, belonging to the field of automotive repair equipment technology. It includes a support base, a hook-and-lock threaded rod, a disassembly threaded rod, a disassembly top frame, and a lifting platform. The lifting platform includes a parallelogram linkage mechanism and a frame. The parallelogram linkage mechanism is mounted on the frame and ensures that the lifting platform remains horizontal at any operating height. A support base is mounted on the top of the parallelogram linkage mechanism, and a disassembly threaded sleeve is fixedly connected to the top of the support base. The inner wall of the disassembly threaded sleeve is threaded with a disassembly threaded rod. This invention utilizes the helical pair between the disassembly threaded rod and the disassembly threaded sleeve to convert rotational motion into stable axial top pressure. This pressure is then reacted by the frame to form axial tension on the brake drum, eliminating the traditional, brutal method of hammering and impacting. The operation is convenient and labor-saving, improving disassembly efficiency.

Description

Technical Field

[0001] This invention relates to the field of automotive repair equipment technology, and in particular to an automotive brake drum disassembly machine. Background Technology

[0002] Brake drums are a key component of drum braking systems. Over time, they can experience wear, deformation, or brake pad erosion, requiring regular disassembly, maintenance, or replacement. Currently, common methods for removing brake drums mainly rely on manual hammering, prying with a pry bar, or using simple pullers. Manual hammering is labor-intensive, inefficient, and prone to damaging the brake drum and wheel hub bearings. While traditional mechanical pullers can provide some pulling force, they often lack a stable working platform, making it easy for the hook to slip during disassembly, leading to uneven force distribution, brake drum jamming, and even safety hazards. Furthermore, the ground clearance of brake drums varies significantly between different vehicle models, and existing disassembly tools are difficult to adjust, often requiring additional support or lifting of the vehicle, increasing the complexity of the operation.

[0003] Therefore, a car brake drum disassembly machine is proposed. Summary of the Invention

[0004] In view of this, the present invention aims to provide an automotive brake drum disassembly machine to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0005] The technical solution of this invention is implemented as follows: an automotive brake drum disassembly machine includes a support base, a hook-and-thread rod, a disassembly and assembly threaded rod, a disassembly top frame, and a lifting platform. The lifting platform includes a parallelogram linkage mechanism and a frame. The parallelogram linkage mechanism is mounted on the frame and is used to ensure that the lifting platform is in a horizontal position when operating at any height. A support base is installed on the top of the parallelogram linkage mechanism. A disassembly threaded sleeve is fixedly connected to the top of the support base. A disassembly and assembly threaded rod is threadedly connected to the inner wall of the disassembly threaded sleeve. A first connecting sleeve is fixedly connected to one side of the disassembly threaded sleeve. A hook-and-thread rod is rotatably connected to one side of the first connecting sleeve. One end of the disassembly and assembly threaded rod is rotatably connected to the disassembly top frame through a second connecting sleeve.

[0006] A further preferred embodiment: the parallelogram linkage mechanism includes a first connecting rod, a second connecting rod, a bracket, a first fixed shaft, and a second fixed shaft; the first connecting rod and the second connecting rod are hinged to the frame, one end of the first connecting rod is hinged to the bracket via the first fixed shaft, one end of the second connecting rod is hinged to the bracket via the second fixed shaft, and the bracket is fixedly connected to the support seat.

[0007] A further preferred embodiment: the bottom of the parallelogram linkage mechanism is equipped with a lifting shaft via a connecting block, and a third connecting sleeve is fitted onto the outer wall of the lifting shaft.

[0008] A further preferred embodiment: the inner side wall of the frame is fixedly connected to a mounting base, and the inner side wall of the mounting base is fixedly connected to a lifting threaded sleeve.

[0009] A further preferred embodiment: the inner wall of the lifting threaded sleeve is threadedly connected to a lifting threaded rod, one end of the lifting threaded rod is fixedly connected to a lifting handwheel, and the other end of the lifting threaded rod is rotatably connected to the third connecting sleeve.

[0010] A further preferred embodiment: one end of the disassembly threaded rod is fixedly connected to a connecting shaft, one end of the connecting shaft is fixedly connected to a disassembly handwheel, the outer side wall of the disassembly handwheel is uniformly fixedly connected to disassembly auxiliary rods, and the hook-tightening threaded rod is rotatably connected to the outer side wall of the connecting shaft.

[0011] A further preferred embodiment: one end of the hooking threaded rod is fixedly connected to a hooking handwheel, and the outer side wall of the hooking threaded rod is threadedly connected to a hooking threaded sleeve.

[0012] A further preferred embodiment: the outer wall of the hook-and-tighten threaded sleeve is symmetrically and fixedly connected to a first hinged support, the first hinged support is internally hinged to a third connecting rod, and one end of the third connecting rod is hinged to a disassembly hook rod.

[0013] A further preferred embodiment: a fourth connecting rod is symmetrically fixedly connected to the outer wall of the disassembly threaded sleeve, one end of the fourth connecting rod is fixedly connected to a second hinge support, and the disassembly hook rod is hinged to the inner wall of the second hinge support.

[0014] A further preferred embodiment: the bottom of the frame is equipped with casters, and the top of the frame is fixedly connected with a handle.

[0015] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions: 1. This invention uses a parallelogram linkage mechanism to support the lifting platform. No matter how high the platform is raised, the support seat always remains horizontal, thereby ensuring that the disassembly top frame and the brake drum are coaxially aligned, avoiding additional bending moment or jamming due to tilting, and making the disassembly process smooth and safe.

[0016] This invention uses a lever-like force-increasing clamping structure consisting of a hook-and-tighten threaded rod, a hook-and-tighten threaded sleeve, a third connecting rod, a disassembly hook rod, and a hinged support. Rotating the hook-and-tighten handwheel allows the disassembly hook rod to firmly hook onto the edge of the brake drum. The clamping force is large and has a self-locking characteristic, preventing it from loosening during operation and improving operational reliability.

[0017] This invention utilizes the helical pair of the threaded rod and the threaded sleeve to convert rotational motion into stable axial top pressure. The reaction force is then applied to the brake drum through the frame to form axial tension. This eliminates the brutal operation of traditional hammering and impact, making the operation easier and less strenuous, and improving disassembly efficiency.

[0018] This invention is equipped with a lifting threaded rod, a lifting threaded sleeve, and a lifting handwheel, which can precisely adjust the working height of the whole machine. It can adapt to brake drums with different ground clearances without lifting vehicles or raising tools, making it widely applicable and more convenient for on-site operations.

[0019] The present invention features rollers installed at the bottom of the frame and a handle at the top, facilitating flexible movement and positioning within the maintenance workshop; a disassembly auxiliary rod is provided on the outside of the disassembly handwheel to increase the lever arm and further reduce the labor intensity of operation.

[0020] All components of this invention are common mechanical parts, requiring no complex hydraulic or electrical control systems. They are easy to process, assemble, and maintain, and have low manufacturing costs, making them suitable for large-scale application in the automotive repair industry.

[0021] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

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

[0023] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a structural diagram of the parallelogram linkage mechanism of the present invention; Figure 3 This is a structural diagram of the support seat top disassembly mechanism of the present invention; Figure 4 This is a structural diagram of the frame of the present invention.

[0024] Reference numerals: 1. Parallelogram linkage mechanism; 101. First connecting rod; 102. Second connecting rod; 103. Bracket; 104. First fixed shaft; 105. Second fixed shaft; 2. Support seat; 3. Disassembly threaded sleeve; 4. First connecting sleeve; 5. Hook threaded rod; 6. Hook handwheel; 7. Hook threaded sleeve; 8. First hinge support; 9. Third connecting rod; 10. Disassembly hook rod; 11. Fourth connecting rod; 12. Second hinge support; 13. Disassembly threaded rod; 14. Connecting shaft; 15. Disassembly handwheel; 16. Disassembly auxiliary rod; 17. Second connecting sleeve; 18. Disassembly top frame; 19. Connecting block; 20. Lifting shaft; 21. Third connecting sleeve; 22. Mounting seat; 23. Lifting threaded sleeve; 24. Lifting threaded rod; 25. Lifting handwheel; 26. Frame; 27. Roller; 28. Handle; 29. ​​Lifting work platform. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1 to 4 As shown, this embodiment of the invention provides an automotive brake drum disassembly machine, including a support base 2, a hook threaded rod 5, a disassembly threaded rod 13, a disassembly top frame 18, and a lifting platform 29. The lifting platform 29 includes a parallelogram linkage mechanism 1 and a frame 26. The parallelogram linkage mechanism 1 is mounted on the frame 26, and its function is to ensure that the support base 2 remains horizontal regardless of the height of the lifting platform 29, thereby guaranteeing the coaxiality of the brake drum and the disassembly top frame 18 during subsequent disassembly and preventing disassembly jamming or uneven loading due to tilting.

[0028] A support seat 2 is mounted on the top of the parallelogram linkage mechanism 1, serving as the base of the entire disassembly device. A disassembly threaded sleeve 3 is fixedly connected to the top of the support seat 2. The inner wall of the disassembly threaded sleeve 3 is machined with internal threads, and a disassembly threaded rod 13 is assembled thereon via a threaded connection. The disassembly threaded rod 13 can rotate within the disassembly threaded sleeve 3 and generate axial displacement, forming a helical pressing transmission. A first connecting sleeve 4 is fixedly connected to one side of the disassembly threaded sleeve 3. A hook threaded rod 5 is rotatably connected to one side of the first connecting sleeve 4 via a rotating pair (such as a bearing or hinge shaft), allowing the hook threaded rod 5 to rotate freely relative to the first connecting sleeve 4. One end of the disassembly threaded rod 13 (the end furthest from the operating end) is rotatably connected to a disassembly top frame 18 via a second connecting sleeve 17. The disassembly top frame 18 is used to directly press against the center of the brake drum.

[0029] In this embodiment, the specific structure of the parallelogram linkage mechanism 1 is as follows: it includes a first connecting rod 101, a second connecting rod 102, a bracket 103, a first fixed shaft 104, and a second fixed shaft 105. The lower ends of the first connecting rod 101 and the second connecting rod 102 are respectively hinged to the frame 26, and they are parallel and of equal length. The upper end of the first connecting rod 101 is hinged to the bracket 103 through the first fixed shaft 104, and the upper end of the second connecting rod 102 is hinged to the bracket 103 through the second fixed shaft 105. The bracket 103 is fixedly connected to the support seat 2. Since the first connecting rod 101, the second connecting rod 102, the frame 26 (partially), and the bracket 103 form a parallelogram, according to the principle of parallelograms, no matter how the connecting rods swing, the bracket 103 always remains parallel to the frame 26, thereby ensuring that the support seat 2 is always in a horizontal state.

[0030] To achieve height adjustment of the entire disassembly machine to accommodate the ground clearance of brake drums in different vehicle models, this embodiment also includes a height adjustment component. Specifically, a lifting shaft 20 is mounted on the bottom of the parallelogram linkage mechanism 1 (e.g., on the hinge axis between the second connecting rod 102 and the frame 26) via a connecting block 19. A third connecting sleeve 21 is sleeved on the outer wall of the lifting shaft 20, and the third connecting sleeve 21 can rotate along the lifting shaft 20. Simultaneously, a mounting base 22 is fixedly connected to the inner wall of the frame 26, and a lifting threaded sleeve 23 is fixedly connected to the inner wall of the mounting base 22. The inner wall of the lifting threaded sleeve 23 is machined with internal threads and threadedly connected to a lifting threaded rod 24. One end of the lifting threaded rod 24 is fixedly connected to a lifting handwheel 25, and the other end of the lifting threaded rod 24 is rotatably connected to the third connecting sleeve 21. When the operator rotates the lifting handwheel 25, the lifting threaded rod 24 moves axially relative to the lifting threaded sleeve 23, which in turn pushes the lower part of the parallelogram linkage mechanism 1 through the third connecting sleeve 21, the lifting shaft 20, and the connecting block 19, causing the linkage to swing and thus raising or lowering the height of the support seat 2. Due to the characteristics of the parallelogram linkage mechanism 1, the support seat 2 remains horizontal throughout the lifting process.

[0031] Specifically, the manual drive mechanism for disassembly is designed as follows: A connecting shaft 14 is fixedly connected to one end of the disassembly threaded rod 13 (the end facing the operator), and a disassembly handwheel 15 is fixedly connected to one end of the connecting shaft 14. Multiple disassembly auxiliary rods 16 are evenly fixedly connected circumferentially to the outer wall of the disassembly handwheel 15 to increase the lever arm and make operation easier. It is worth noting that the hook threaded rod 5 is rotatably connected to the outer wall of the connecting shaft 14; that is, the hook threaded rod 5 and the connecting shaft 14 can rotate relative to each other without interfering with each other. Therefore, rotating the disassembly handwheel 15 will not cause the hook threaded rod 5 to rotate, and vice versa.

[0032] The hooking mechanism is used to clamp the edge of the brake drum. A hooking handwheel 6 is fixedly connected to one end of the hooking threaded rod 5 (the end furthest from the first connecting sleeve 4). The outer wall of the hooking threaded rod 5 is machined with external threads and threadedly connected to a hooking threaded sleeve 7. When the hooking handwheel 6 is rotated, the hooking threaded sleeve 7 can move axially along the hooking threaded rod 5. First hinged supports 8 are symmetrically fixedly connected to the outer wall of the hooking threaded sleeve 7. A third connecting rod 9 is hinged inside each first hinged support 8, and a disassembly hook rod 10 is hinged to one end of each third connecting rod 9. The middle of the disassembly hook rod 10 requires an additional support point. Therefore, a fourth connecting rod 11 is symmetrically fixedly connected to the outer wall of the disassembly threaded sleeve 3. A second hinged support 12 is fixedly connected to one end of the fourth connecting rod 11, and the middle of the disassembly hook rod 10 is hinged to the inner wall of the second hinged support 12. Thus, the third connecting rod 9, the disassembly hook rod 10, the fourth connecting rod 11, and the hooking threaded sleeve 7 and the disassembly threaded sleeve 3 form a clamping mechanism similar to a lever-linkage mechanism. When the hooking threaded sleeve 7 moves toward the hooking handwheel 6, the third connecting rod 9 pulls the disassembly hook rod 10 to rotate around the second hinge support 12, causing the hook head of the disassembly hook rod 10 to retract inward, thereby hooking the end face edge of the brake drum; the reverse direction releases it.

[0033] To facilitate the movement and fixation of the entire machine, multiple casters 27 (such as casters with brakes) are installed at the bottom of the frame 26, and a handle 28 is fixedly connected to the top of the frame 26 for easy pushing and pulling.

[0034] In operation, this invention works as follows: First, adjust the support seat 2 to a suitable height by rotating the lifting handwheel 25 according to the ground clearance of the brake drum to be disassembled; then, push the disassembly machine near the wheel, aligning the disassembly top frame 18 with the center of the brake drum; rotate the hook tightening handwheel 6 to open the disassembly hook 10 and hook the edge of the brake drum, and continue rotating the hook tightening handwheel 6 to generate sufficient clamping force through the lever mechanism; finally, rotate the disassembly handwheel 15, and the disassembly threaded rod 13 pushes the disassembly top frame 18 to press against the brake drum hub or shaft head. As it continues to rotate, the disassembly top frame 18 generates a reverse pulling force, slowly pulling the brake drum off the hub. The entire process requires no hammering, is safe, labor-saving, and efficient.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A car brake drum disassembly machine, comprising a support base (2), a threaded rod hook (5), a threaded rod disassembly / removal mechanism (13), a disassembly top frame (18), and a lifting work platform (29), characterized in that: The lifting platform (29) includes a parallelogram linkage mechanism (1) and a frame (26). The parallelogram linkage mechanism (1) is installed on the frame (26). The parallelogram linkage mechanism (1) is used to ensure that the lifting platform (29) is in a horizontal position when operating at any height. A support seat (2) is installed on the top of the parallelogram linkage mechanism (1). A disassembly threaded sleeve (3) is fixedly connected to the top of the support seat (2). A disassembly threaded rod (13) is threadedly connected to the inner wall of the disassembly threaded sleeve (3). A first connecting sleeve (4) is fixedly connected to one side of the disassembly threaded sleeve (3). A hook threaded rod (5) is rotatably connected to one side of the first connecting sleeve (4). One end of the disassembly threaded rod (13) is rotatably connected to a disassembly top frame (18) through a second connecting sleeve (17).

2. The automotive brake drum disassembly machine according to claim 1, characterized in that: The parallelogram linkage mechanism (1) includes a first connecting rod (101), a second connecting rod (102), a bracket (103), a first fixed shaft (104), and a second fixed shaft (105); the first connecting rod (101) and the second connecting rod (102) are hinged to the frame (26), one end of the first connecting rod (101) is hinged to the bracket (103) through the first fixed shaft (104), and one end of the second connecting rod (102) is hinged to the bracket (103) through the second fixed shaft (105). The bracket (103) is fixedly connected to the support seat (2).

3. The automotive brake drum disassembly machine according to claim 1, characterized in that: The bottom of the parallelogram linkage mechanism (1) is equipped with a lifting shaft (20) via a connecting block (19), and a third connecting sleeve (21) is fitted on the outer side wall of the lifting shaft (20).

4. The automotive brake drum disassembly machine according to claim 3, characterized in that: The inner wall of the frame (26) is fixedly connected to a mounting base (22), and the inner wall of the mounting base (22) is fixedly connected to a lifting threaded sleeve (23).

5. The automotive brake drum disassembly machine according to claim 4, characterized in that: The inner wall of the lifting threaded sleeve (23) is threaded with a lifting threaded rod (24). One end of the lifting threaded rod (24) is fixedly connected to a lifting handwheel (25), and the other end of the lifting threaded rod (24) is rotatably connected to the third connecting sleeve (21).

6. The automotive brake drum disassembly machine according to claim 1, characterized in that: One end of the disassembly threaded rod (13) is fixedly connected to a connecting shaft (14), one end of the connecting shaft (14) is fixedly connected to a disassembly handwheel (15), and the outer side wall of the disassembly handwheel (15) is uniformly fixedly connected to a disassembly auxiliary rod (16). The hook threaded rod (5) is rotatably connected to the outer side wall of the connecting shaft (14).

7. The automotive brake drum disassembly machine according to claim 1, characterized in that: One end of the hook-tightening threaded rod (5) is fixedly connected to a hook-tightening handwheel (6), and the outer side wall of the hook-tightening threaded rod (5) is threadedly connected to a hook-tightening threaded sleeve (7).

8. The automotive brake drum disassembly machine according to claim 7, characterized in that: The outer wall of the hook threaded sleeve (7) is symmetrically fixedly connected to a first hinge support (8), and a third connecting rod (9) is hinged inside the first hinge support (8). One end of the third connecting rod (9) is hinged to a disassembly hook rod (10).

9. The automotive brake drum disassembly machine according to claim 8, characterized in that: The outer wall of the disassembly threaded sleeve (3) is symmetrically fixedly connected with a fourth connecting rod (11), one end of the fourth connecting rod (11) is fixedly connected with a second hinge support (12), and the disassembly hook rod (10) is hinged to the inner wall of the second hinge support (12).

10. The automotive brake drum disassembly machine according to claim 1, characterized in that: The bottom of the frame (26) is equipped with casters (27), and the top of the frame (26) is fixedly connected with a handle (28).

Images