A universal pneumatic device for disassembling shock absorber springs

Abstract

The invention discloses a universal pneumatic device for disassembling a shock absorber spring, comprising a base, a box, a first effort-saving lever mechanism and a second effort-saving lever mechanism; the first effort-saving lever mechanism comprises an active small chain gear, a first large chain gear, a first large pulley and a first steel wire rope, the first steel wire rope is connected with a first hook, a ratchet pawl is arranged on the outer wall of the box, and the ratchet pawl contacts with the active small chain gear; the second effort-saving lever mechanism comprises a driven small chain gear, a second large chain gear, a second large pulley and a second steel wire rope, the end of the second steel wire rope is connected with a second hook, a guide pulley is arranged between the second hook and the second large pulley, and the guide pulley is arranged at the inner wall of the box near the opening. The invention adopts the above structure to quickly and safely disassemble most shock absorber springs, avoid the danger and inconvenience caused in the process of automobile maintenance, reduce the test cost of new cars in the development process, and shorten the test cycle.

Description

Technical Field

[0001] The invention relates to the technical field of automobile shock absorber disassembly tools, in particular to a universal pneumatic device for disassembling a shock absorber spring. Background Art

[0002] In most car repair processes, only the shock absorber needs to be replaced, not the coil spring. In this case, the shock absorber with coil spring needs to be disassembled, because the coil spring generally has a large preload after being assembled on the shock absorber, which is inconvenient to disassemble, and the spring rebounds quickly, which is prone to danger. During chassis tuning or testing in automobile factories, shock absorbers and springs need to be replaced frequently. Each test requires a large number of different combinations of shock absorbers and springs to be stored, which results in high test costs, long parts production cycles, and waste of resources. In view of the above reasons, it is necessary to design a universal pneumatic device for disassembling shock absorber springs. Summary of the invention

[0003] The purpose of the present invention is to provide a universal pneumatic device for disassembling a shock absorber spring, which can quickly and safely disassemble most shock absorber springs, avoid the danger and inconvenience caused during automobile maintenance, reduce the test cost of new cars during development, and shorten the test cycle.

[0004] To achieve the above-mentioned object, the present invention provides a universal pneumatic device for disassembling a shock absorber spring, comprising a base, a box body arranged on the base, a first effort-saving lever mechanism arranged on one side of the box body, and a second effort-saving lever mechanism arranged on the other side of the box body, wherein the second effort-saving lever mechanism is connected to the first effort-saving lever mechanism;

[0005] The first effort-saving lever mechanism comprises a driving small chain gear, a first large chain gear connected to the driving small chain gear, a first large pulley connected to the first large chain gear, and a first steel wire rope wound on the first large pulley, the first steel wire rope is connected to a first hook, a ratchet pawl is arranged on the outer wall of the box body, and the ratchet pawl is in contact with the driving small chain gear;

[0006] The second effort-saving lever mechanism comprises a driven small chain gear connected to the active small chain gear, a second large chain gear connected to the driven small chain gear, a second large pulley connected to the second large chain gear, and a second steel wire rope wound on the second large pulley, a second hook is connected to the end of the second steel wire rope, a guide pulley supporting the second steel wire rope is arranged between the second hook and the second large pulley, and the guide pulley is arranged on the inner wall of the box body near the opening;

[0007] The first large chain gear and the second large chain gear are both provided with pin holes for inserting safety pins.

[0008] Preferably, the driving small chain gear and the driven small chain gear are symmetrically arranged on the outer walls of both sides of the box body, and a pneumatic wrench socket is arranged on the driving small chain gear.

[0009] Preferably, the driven small chain gear is connected to the driving small chain gear via a connecting shaft.

[0010] Preferably, the first large chain gear and the second large chain gear are symmetrically arranged on the outer walls of both sides of the box body, and the first large chain gear and the active small chain gear, as well as the second large chain gear and the driven small chain gear are connected by chains.

[0011] Preferably, the first large pulley and the second large pulley are symmetrically arranged on both side inner walls of the box.

[0012] Preferably, the base and the box are connected via a plurality of support rods, and the plurality of support rods are cross-arranged.

[0013] Preferably, the first hook and the first steel wire rope are rigidly connected, as are the second hook and the second steel wire rope.

[0014] Therefore, the present invention adopts a universal pneumatic device for disassembling a shock absorber spring with the above structure, which can quickly and safely disassemble most shock absorber springs, avoid the danger and inconvenience caused by the automobile maintenance process, reduce the test cost of new cars during the development process, and shorten the test cycle.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention;

[0017] Figure 2 It is a left side view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention;

[0018] Figure 3 It is a right side view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention;

[0019] Figure 4 It is a front view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention;

[0020] Figure 5 A CC sectional view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention;

[0021] Figure 6It is a DD-direction cross-sectional view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example

[0025] Figure 1 This is a schematic structural diagram of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention. Figure 2 This is a left view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention. Figure 3 This is a right side view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention. Figure 4 This is a front view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention. Figure 5 This is a CC sectional view of an embodiment of a universal pneumatic device for disassembling a shock absorber spring according to the present invention. Figure 6 The DD section view of an embodiment of a general pneumatic device for disassembling a shock absorber spring of the present invention. As shown in the figure, the present invention provides a general pneumatic device for disassembling a shock absorber spring, comprising a base 1, a box 2 arranged on the base 1, a first effort-saving lever mechanism arranged on one side of the box 2, and a second effort-saving lever mechanism arranged on the other side of the box 2, wherein the second effort-saving lever mechanism is connected to the first effort-saving lever mechanism. By arranging the first effort-saving lever mechanism and the second effort-saving lever mechanism, it can be ensured that a large force does not need to be applied to overcome the elastic force of the spring during the entire disassembly process, and the entire use process is safe and labor-saving. The physiological lever mechanism in which a small gear drives a large gear makes the entire process more labor-saving and light, and can be easily completed even if purely manual operation is adopted. It can meet the needs of disassembling the assembly parts of most spiral spring shock absorbers, and has double insurances of a ratchet mechanism and a safety pin to ensure that there is no danger caused by the sudden rebound of the spring when the spring is disassembled.

[0026] The first effort-saving lever mechanism includes an active small chain gear 3, a first large chain gear 4 connected to the active small chain gear 3, a first large pulley 5 connected to the first large chain gear 4 and a first steel wire rope 6 wound around the first large pulley 5, a first hook 7 is connected to the first steel wire rope 6, a ratchet pawl 8 is provided on the outer wall of the box body 2, and the ratchet pawl 8 is in contact with the active small chain gear 3. The second effort-saving lever mechanism includes a driven small chain gear 9 connected to the active small chain gear 3, a second large chain gear 10 connected to the driven small chain gear 9, a second large pulley 11 connected to the second large chain gear 10, and a second steel wire rope 12 wound around the second large pulley 11, a second hook 13 is connected to the end of the second steel wire rope 12, a guide pulley 14 supporting the second steel wire rope 12 is arranged between the second hook 13 and the second large pulley 11, and the guide pulley 14 is arranged on the inner wall of the box body 2 near the opening; pin holes 16 for inserting safety pins 15 are reserved on the first large chain gear 4 and the second large chain gear 10.

[0027] The driving small chain gear 3 and the driven small chain gear 9 are symmetrically arranged on the outer walls of both sides of the box body 2, and a pneumatic wrench socket is arranged on the driving small chain gear 3. The driven small chain gear 9 is connected to the driving small chain gear 3 through a connecting shaft, and the transmission efficiency is high, which ensures the synchronous rotation of the driving small chain gear and the driven small chain gear on both sides, and at the same time ensures the synchronous tightening of the first wire rope and the second wire rope, avoiding the danger of being unable to disassemble due to the tightening of one side of the wire rope or the loosening of the wire rope.

[0028] The first large chain gear 4 and the second large chain gear 10 are symmetrically arranged on the outer walls of both sides of the box body 2. The first large chain gear 4 and the active small chain gear 3, and the second large chain gear 10 and the driven small chain gear 9 are connected by chains 17.

[0029] The first large pulley 5 and the second large pulley 11 are symmetrically arranged on the inner walls of both sides of the box body 2 .

[0030] The base 1 is connected to the box body 2 by a plurality of support rods 18, and the plurality of support rods 18 are cross-arranged. The first hook 7 and the first steel wire rope 6, and the second hook 13 and the second steel wire rope 12 are rigidly connected.

[0031] This structure eliminates the need for an electric motor drive, and the active small chain gear can be driven to rotate by a pneumatic wrench or a curved handle wrench through the pneumatic wrench socket reserved on the active small chain gear. When in use, the first hook and the second hook are first hung on the shock absorber spring, and the active small chain gear is driven to drive the driven small chain gear to rotate. The active small chain gear and the driven small chain gear simultaneously drive their respective chains to rotate, and their respective chains respectively drive the first large chain gear and the second large chain gear to rotate, thereby driving the first large pulley and the second large pulley to rotate. The rotation of the first large pulley and the second large pulley will tighten the first steel wire rope and the second steel wire rope. After passing through the guide pulley, the second steel wire rope is in a diagonal position with the second steel wire rope, thereby ensuring that no one side will shrink during the process of tightening the spring. During the process of tightening the spring, the ratchet pawl can always ensure that the active small chain gear will not rebound and reverse. When the spring is tightened into place, the safety pin passes through the reserved holes on the first large chain gear and the second large chain gear, and is inserted into the pin hole on the box body, thereby realizing a double insurance function together with the ratchet pawl.

[0032] After disassembly, just pull out the safety pins on both sides, then turn the active small chain gear at a small angle, push away the ratchet claw, the ratchet claw will droop due to gravity and no longer work, and slowly release the first wire rope and the second wire rope of the tension spring.

[0033] Therefore, the present invention adopts a universal pneumatic device for disassembling a shock absorber spring with the above structure, which can quickly and safely disassemble most shock absorber springs, avoid the danger and inconvenience caused by the automobile maintenance process, reduce the test cost of new cars during the development process, and shorten the test cycle.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A universal pneumatic device for disassembling a shock absorber spring, characterized in that: It comprises a base, a box body arranged on the base, a first effort-saving lever mechanism arranged on one side of the box body, and a second effort-saving lever mechanism arranged on the other side of the box body, wherein the second effort-saving lever mechanism is connected to the first effort-saving lever mechanism; The first effort-saving lever mechanism comprises a driving small chain gear, a first large chain gear connected to the driving small chain gear, a first large pulley connected to the first large chain gear, and a first steel wire rope wound on the first large pulley, the first steel wire rope is connected to a first hook, a ratchet pawl is arranged on the outer wall of the box body, and the ratchet pawl is in contact with the driving small chain gear; The second effort-saving lever mechanism comprises a driven small chain gear connected to the active small chain gear, a second large chain gear connected to the driven small chain gear, a second large pulley connected to the second large chain gear, and a second steel wire rope wound on the second large pulley, a second hook is connected to the end of the second steel wire rope, a guide pulley supporting the second steel wire rope is arranged between the second hook and the second large pulley, and the guide pulley is arranged on the inner wall of the box body near the opening; The first large chain gear and the second large chain gear are both provided with pin holes for inserting safety pins.

2. A universal pneumatic device for disassembling a shock absorber spring according to claim 1, characterized in that: The driving small chain gear and the driven small chain gear are symmetrically arranged on the outer walls of both sides of the box body, and the driving small chain gear is provided with a pneumatic wrench socket.

3. A universal pneumatic device for disassembling a shock absorber spring according to claim 2, characterized in that: The driven small chain gear is connected to the driving small chain gear through a connecting shaft.

4. A universal pneumatic device for disassembling a shock absorber spring according to claim 3, characterized in that: The first large chain gear and the second large chain gear are symmetrically arranged on the outer walls of both sides of the box body, and the first large chain gear and the active small chain gear, as well as the second large chain gear and the driven small chain gear are connected by chains.

5. A universal pneumatic device for disassembling a shock absorber spring according to claim 4, characterized in that: The first large pulley and the second large pulley are symmetrically arranged on the inner walls of both sides of the box.

6. A universal pneumatic device for disassembling a shock absorber spring according to claim 5, characterized in that: The base and the box body are connected via a plurality of support rods, and the plurality of support rods are cross-arranged.

7. A universal pneumatic device for disassembling a shock absorber spring according to claim 6, characterized in that: The first hook and the first steel wire rope are rigidly connected, as are the second hook and the second steel wire rope.

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