CN107351609B - Trailer towing hook damping structure - Google Patents
Trailer towing hook damping structure Download PDFInfo
- Publication number
- CN107351609B CN107351609B CN201710735391.5A CN201710735391A CN107351609B CN 107351609 B CN107351609 B CN 107351609B CN 201710735391 A CN201710735391 A CN 201710735391A CN 107351609 B CN107351609 B CN 107351609B
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- Prior art keywords
- damping sleeve
- axial
- sleeve body
- hole
- hook
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/01—Traction couplings or hitches characterised by their type
- B60D1/04—Hook or hook-and-hasp couplings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a trailer towing hook vibration reduction structure with better safety and reliability, which is characterized in that: the front damping sleeve body (40) of the front damping sleeve, the inner damping sleeve body (30) of the inner damping sleeve, the check ring (5) and the locking piece (6) are sequentially sleeved on a shaft rod (9) of a traction hook (1) through an axial connecting hole (43), an axial mounting hole (31) and an axial assembling hole (61) in a close manner from front to back, the front end of the front damping sleeve body (40) is attached to the rear end of a neck (11) of a traction hook body (10) of the traction hook (1), and a fixing sleeve body (20) and a front fixing sleeve body (22) of a fixing sleeve (2) are sleeved on the inner damping sleeve body (30) of the inner damping sleeve and a rear part (42) of the front sleeve body (40) of the front damping sleeve (4) through an axial through hole (21) and a front axial through hole (23).
Description
Technical Field
The invention relates to a trailer traction mechanism, in particular to a trailer traction hook vibration reduction structure.
Background
At present, the common trailer advances by connecting with a trailer through a towing hook. A common trailer hitch damper structure, see fig. 1, includes; a whole body of the drag hook 1 made of a metal material, which comprises a drag hook body 10 and a neck part 11 extending radially and vertically outwards from the rear end of the drag hook body 10, and a shaft rod 9 extending axially and backwards from the rear end of the neck part 11 and having a diameter smaller than that of the drag hook body 10, a fixed sleeve 20 made of a metal material and provided with an axial through hole 21, a disc spring 50 made of a metal material, a retainer ring 5 made of a metal material, a locking member 6 made of a metal material and having an outer diameter larger than that of the retainer ring 5 and provided with an axial assembling hole 61; the fixed sleeve 20, the disc spring 50, the retainer ring 5 and the locking piece 6 are sequentially sleeved on the shaft lever 9 in a mutually abutting manner from front to back; the front end of the fixing sleeve 20 is attached to the rear end of the neck 11 of the towing hook 1, and the axial through hole 21 is tightly matched with the shaft lever 9. The technical problem of the trailer towing hook vibration reduction structure with the structure is that; the rear end of the neck 11 of the towing hook 1 is attached to the front end of the fixed sleeve 20, no other elastically deformable part is arranged between the neck 11 and the fixed sleeve for buffering, and after the disc spring 50 is locked by the retaining ring 5 and the locking part 6, the fixed sleeve 20, the disc spring 50, the retaining ring 5 and the locking part 6 sleeved on the shaft rod 9 of the whole towing hook 1 are all made of metal materials, and are sequentially and rigidly abutted against each other from front to back. Therefore, when the trailer runs on a concave-convex top limping road surface, the neck 11 of the towing hook 1 receives the front pulling force and the reaction force of the towing hook body 10, and simultaneously receives vibration impact alternating stress from various directions such as up, down, front and back directions and the like along with the top limping degree of the road surface, and the disc spring 50 can only have certain vibration damping effect in the axial direction, and basically cannot damp vibration in other directions; the fixing sleeve 20, the front end of which is attached to the rear end of the neck portion 11 of the towing hook 1, cannot absorb and release the alternating stress of the received vibration impact, i.e., there is no stress release space. Therefore, the rear end of the neck portion 11 of the towing hook 1 and the front end of the fixing sleeve 20 are repeatedly impacted by the vibration alternating stress, so that the neck portion 11 of the towing hook 1 is easily bent and broken, the trailer and the trailer are disconnected, the trailer cannot move forward, and the safety and the reliability are poor.
Disclosure of Invention
The invention aims to provide a trailer towing hook vibration reduction structure with better safety and reliability.
In order to solve the technical problem, the trailer towing hook vibration damping structure comprises a frame; contain the hook body of pulling and by the neck that the rear end radial direction vertical extension of hook body extends to and the whole hook of pulling by being less than the axostylus axostyle of pulling the hook body of pulling of the rear end axial backward extension of neck, contain the fixed cover by metal material who is equipped with axial through-hole, the retaining ring by metal material makes, by metal material make, be equipped with the retaining member of axial assembly hole, characterized by: also comprises a front damping sleeve and an inner damping sleeve which are made of elastic materials,
the front vibration damping sleeve comprises a front vibration damping sleeve body which comprises a front part and a rear part, the outer diameter of the front part is larger than that of the rear part, the front vibration damping sleeve body is provided with an axial connecting hole,
the inner damping sleeve comprises an inner damping sleeve body with the outer diameter larger than that of the front part of the front damping sleeve, the inner damping sleeve body is provided with an axial mounting hole,
the fixed sleeve comprises a fixed sleeve body, the aperture and the axial length of the axial through hole of the fixed sleeve body are matched with the outer diameter and the axial length of the inner damping sleeve, and a front fixed sleeve body, the aperture and the axial length of the front axial through hole of the fixed sleeve body extend forwards from the front end of the fixed sleeve body, the aperture and the axial length of the front axial through hole of the fixed sleeve body are matched with the outer diameter and the axial length of the rear part of the front damping sleeve body of the front damping sleeve,
the front damping sleeve body of the front damping sleeve, the inner damping sleeve body of the inner damping sleeve, the retaining ring and the retaining member are respectively sleeved on the shaft lever of the traction hook in a close manner from front to back through the axial connecting hole, the axial mounting hole and the axial assembling hole, the front end of the front damping sleeve body is attached to the rear end of the neck of the traction hook body of the traction hook,
the fixed sleeve body and the front fixed sleeve body of the fixed sleeve are respectively sleeved on the inner damping sleeve body of the inner damping sleeve and the rear part of the front damping sleeve body of the front damping sleeve through the axial through hole and the front axial through hole.
Further, the outer diameter of the retainer ring is larger than that of the locking member.
Further, the front damping sleeve is made of elastic rubber or elastic nylon or polyurethane.
Further, the inner damping sleeve is made of elastic rubber or elastic nylon or polyurethane.
The present invention includes the following advantageous effects;
when the trailer runs on a concave-convex clawing road surface, the neck of the towing hook can bear the front pulling force and the reaction force of the towing hook body, and simultaneously can bear vibration impact alternating stress from various directions such as up, down, front and back and the like along with the clawing road surface. In the invention, the front damping sleeve body of the front damping sleeve and the inner damping sleeve body of the inner damping sleeve are sleeved on the shaft rod at a gap between the front and the back, and the front end of the front damping sleeve body is attached to the back end of the neck of the traction hook body of the traction hook. Therefore, the vibration impact alternating stress borne by the rear end of the neck of the traction hook can be transmitted to the front end of the front vibration damping sleeve body of the front vibration damping sleeve, and is transmitted to the inner vibration damping sleeve body of the inner vibration damping sleeve from the rear end of the front vibration damping sleeve body, and then is absorbed and dissolved by the front vibration damping sleeve and the inner vibration damping sleeve which are made of elastic materials. Thus, the vibration impact alternating stress applied to the rear end of the neck part of the towing hook is reduced and released. Therefore, the neck of the towing hook is not easy to bend and break, so that the trailer can be ensured to run on a concave-convex turning limp road surface, the trailer and the trailer can be firmly connected, the trailer can run normally, and the safety and the reliability are good.
In the process, the fixing sleeve and the locking piece can effectively sleeve the front damping sleeve body of the front damping sleeve and the inner damping sleeve body of the inner damping sleeve on the shaft rod, the front end of the front damping sleeve body of the front damping sleeve is tightly attached to the rear end of the neck of the traction hook, and the rear end of the front damping sleeve body of the front damping sleeve is tightly attached to the front end of the inner damping sleeve body of the inner damping sleeve, so that the front damping sleeve and the inner damping sleeve can absorb, dissolve, reduce and release the vibration impact alternating stress received by the rear end of the neck of the traction hook.
Drawings
FIG. 1 is a schematic diagram of a conventional trailer hitch damper arrangement;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a top view of FIG. 3;
fig. 5 is a schematic structural view of the towing hook.
Detailed Description
Referring to fig. 2 through 5, the trailer hitch damper structure of the present invention includes; the whole traction hook 1 made of metal material comprises a traction hook body 10 and a neck part 11 extending outwards from the rear end of the traction hook body 10 in radial direction and vertically, and a shaft rod 9 extending backwards from the rear end of the neck part 11 in axial direction and having a diameter smaller than that of the traction hook body 10, a fixed sleeve 2 made of metal material and provided with an axial through hole 21, a retaining ring 5 made of metal material and a locking piece 6 made of metal material and provided with an axial assembling hole 61. As can be seen from fig. 2 to 5, the present invention further includes a front damping sleeve 4 and an inner damping sleeve 3 made of elastic material, the front damping sleeve 4 includes a front damping sleeve body 40 including a front portion 41 and a rear portion 42, and the outer diameter of the front portion 41 is greater than the outer diameter of the rear portion 42, the front damping sleeve body 40 is provided with an axial connection hole 43, the inner damping sleeve 3 includes an inner damping sleeve body 30 having an outer diameter greater than the outer diameter of the front portion 41 of the front damping sleeve 4, the inner damping sleeve body 30 is provided with an axial installation hole 31, the fixed sleeve 2 includes a front fixed sleeve body 22 having an axial through hole 21 whose aperture and axial length are adapted to the outer diameter and axial length of the inner damping sleeve 3, and a front damping sleeve body 20 extending forward from the front end of the fixed sleeve body 20 and having an aperture and axial length of the front axial through hole 23 which are adapted to the outer diameter and axial length of the rear portion 42 on the front damping sleeve body 40 of the front damping sleeve body 4, the front damping sleeve body 40, the inner damping sleeve body 30, the retaining ring 5 and the retaining ring 6 are respectively attached to the front sleeve body 20 by the axial connection hole 31 and the front sleeve body of the front damping sleeve body 20 and the rear sleeve body 1 of the front damping sleeve body 3, and the neck portion of the front damping sleeve body 1, and the neck portion of the front damping sleeve body 20. Thus, when the trailer runs on an uneven and bumpy limp road surface, the neck portion 11 of the towing hook 1 receives the front tension and the reaction force of the towing hook body 10, and receives the vibration impact alternating stress from various directions such as up, down, front, back and the like, which is large and small in time, along with the bumpy limp road surface. In the invention, the front damping sleeve body 40 of the front damping sleeve 4 and the inner damping sleeve body 30 of the inner damping sleeve 3 are sleeved on the shaft rod 9 in a clearance way that the front and the back are close to each other, and the front end of the front damping sleeve body 40 is attached to the back end of the neck part 11 of the traction hook body 10 of the traction hook 1. Then, the vibration impact alternating stress received by the rear end of the neck portion 11 of the draw hook is transmitted to the front end of the front damping sleeve body 40 of the front damping sleeve 4, and is transmitted to the inner damping sleeve body 30 of the inner damping sleeve 3 from the rear end of the front damping sleeve body 40, and is absorbed and dissolved by the front damping sleeve 4 and the inner damping sleeve 3 made of elastic materials. Thus, the vibration impact alternating stress applied to the rear end of the neck portion 11 of the towing hook is reduced and released. Therefore, the neck 11 of the towing hook 1 is not easy to bend and break, so that when the trailer runs on a concave-convex clawing road surface, the trailer and the trailer can be firmly connected, the trailer can run normally, and the safety and the reliability are better.
In the above process, the fixing sleeve 2 and the locking member 6 can effectively sleeve the front damping sleeve body 40 of the front damping sleeve 4 and the inner damping sleeve body 30 of the inner damping sleeve 3 on the shaft rod 9, and make the front end of the front damping sleeve body 40 of the front damping sleeve 4 closely fit with the rear end of the neck 11 of the traction hook, and make the rear end of the front damping sleeve body 40 of the front damping sleeve 4 closely fit with the front end of the inner damping sleeve body 30 of the inner damping sleeve 3, so as to ensure that the front damping sleeve 4 and the inner damping sleeve 3 absorb, resolve, reduce and release the vibration impact alternating stress received by the rear end of the neck 11 of the traction hook.
Preferably, the collar 5 has an outer diameter greater than the outer diameter of the locking member 6. This increases the area of the front end of the retainer ring 5 abutting against the inner damping sleeve body 30 of the inner damping sleeve 3, thereby ensuring that the front damping sleeve 4 and the inner damping sleeve 3 can better absorb, dissolve, reduce and release the vibration impact alternating stress on the rear end of the neck portion 11 of the towing hook 1.
Preferably, the front damping sleeve 4 is made of elastic rubber. This enables the front shock-absorbing bush 4 to better absorb, resolve, reduce and release the shock alternating stress to which the rear end of the neck portion 11 of the towing hook is subjected. The front damping sleeve 4 may also be made of either elastic nylon or polyurethane. This also enables the front shock-absorbing sleeve 4 to better absorb, resolve, reduce and release the shock alternating stresses to which the rear end of the neck 11 of the towing hook is subjected.
Preferably, the inner damping sleeve 3 is made of elastic rubber. This enables the inner damping sleeve 3 to better absorb, resolve, reduce and release the vibratory impact alternating stress to which the rear end of the neck portion 11 of the towing hook 1 is subjected, which is transmitted by the front damping sleeve 4. The inner damping sleeve 3 may also be made of either elastic nylon or polyurethane. This also enables the inner damping sleeve 3 to better absorb, resolve, reduce and release the vibratory impact alternating stress to which the rear end of the neck portion 11 of the towing hook is subjected, which is transmitted by the front damping sleeve 4.
Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (4)
1. A trailer towing hook damping structure comprises; contain the hook body (10) that pulls and by the neck (11) that the rear end radial vertical outward extension of hook body (10) pulls to and the whole hook (1) that pulls that the diameter that extends backward by the rear end axial of neck (11) is less than axostylus axostyle (9) of pulling hook body (10) is made by metal material, contain fixed cover (2) by metal material that are equipped with axial through hole (21), retaining ring (5) by metal material, retaining member (6) by metal material preparation, be equipped with axial assembly hole (61), characterized by: also comprises a front damping sleeve (4) and an inner damping sleeve (3) which are made of elastic materials,
the front damping sleeve (4) comprises a front damping sleeve body (40) which comprises a front part (41) and a rear part (42), the outer diameter of the front part (41) is larger than that of the rear part (42), an axial connecting hole (43) is arranged on the front damping sleeve body (40),
the inner damping sleeve (3) comprises an inner damping sleeve body (30) with the outer diameter larger than that of the front part (41) of the front damping sleeve (4), an axial mounting hole (31) is arranged on the inner damping sleeve body (30),
the fixed sleeve (2) comprises a fixed sleeve body (20) of which the aperture and the axial length of the axial through hole (21) are matched with the outer diameter and the axial length of the inner damping sleeve (3), and a front fixed sleeve body (22) of which the aperture and the axial length of a front axial through hole (23) extend forwards from the front end of the fixed sleeve body (20) are matched with the outer diameter and the axial length of a rear part (42) on a front damping sleeve body (40) of the front damping sleeve (4),
the front damping sleeve body (40) of the front damping sleeve (4), the inner damping sleeve body (30) of the inner damping sleeve (3), the check ring (5) and the locking piece (6) are respectively sleeved on the shaft lever (9) of the towing hook (1) through the axial connecting hole (43), the axial mounting hole (31) and the axial assembling hole (61) in sequence from front to back, the front end of the front damping sleeve body (40) is attached to the rear end of the neck (11) of the towing hook body (10) of the towing hook (1),
the fixed sleeve body (20) and the front fixed sleeve body (22) of the fixed sleeve (2) are sleeved on the inner damping sleeve body (30) of the inner damping sleeve (3) and the rear part (42) of the front damping sleeve body (40) of the front damping sleeve (4) through the axial through hole (21) and the front axial through hole (23) respectively.
2. The shock absorbing structure for a trailer hitch as claimed in claim 1, wherein: the outer diameter of the retainer ring (5) is larger than that of the locking piece (6).
3. The trailer hitch damping structure as claimed in claim 2, wherein: the front damping sleeve (4) is made of elastic rubber or elastic nylon or elastic polyurethane.
4. The trailer hitch damping structure as claimed in claim 3, wherein: the inner damping sleeve (3) is made of elastic rubber or elastic nylon or polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710735391.5A CN107351609B (en) | 2017-08-24 | 2017-08-24 | Trailer towing hook damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710735391.5A CN107351609B (en) | 2017-08-24 | 2017-08-24 | Trailer towing hook damping structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107351609A CN107351609A (en) | 2017-11-17 |
| CN107351609B true CN107351609B (en) | 2023-02-21 |
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ID=60289108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710735391.5A Active CN107351609B (en) | 2017-08-24 | 2017-08-24 | Trailer towing hook damping structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107351609B (en) |
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| CN205034128U (en) * | 2015-09-23 | 2016-02-17 | 鞍钢集团铁路运输设备制造公司 | Buffer is connected to ultrashort short -tail coupling |
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| CN107351609A (en) | 2017-11-17 |
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