CN220682076U - Traction hook lifting adjusting device and assault boat transfer trolley - Google Patents

Abstract

The utility model relates to a fire-fighting equipment carrier technical field discloses a towing hook lifting adjusting device and assault boat transfer trolley, including heightening the guide post, heightening the guide post and setting up on preceding traction beam, heightening the guide post and setting up a plurality of first regulation hole groups along predetermineeing the direction interval on, predetermineeing the direction and heightening the direction of height of guide post, set up a plurality of first regulation holes in every first regulation hole group of row, a plurality of first regulation holes in every first regulation hole group of row are along the direction interval setting of height, a plurality of first regulation holes in two adjacent first regulation hole groups are along the direction of height staggering; the adjusting sliding sleeve is sleeved on the height-adjusting guide column, a plurality of rows of limiting structures which are in one-to-one correspondence with the first adjusting hole groups are arranged on the adjusting sliding sleeve, and each row of limiting structures at least comprises a second adjusting hole; the fixed pin shaft of the adjusting sliding sleeve simultaneously penetrates into the first adjusting hole and the second adjusting hole; the traction hook component is connected to the front part of the adjusting sliding sleeve. Has the advantages of high strength and wider application range of height adjustment.

Description

Traction hook lifting adjusting device and assault boat transfer trolley

Technical Field

The application relates to the technical field of fire-fighting equipment carriers, in particular to a traction hook lifting adjusting device and an assault boat transfer vehicle.

Background

In the past tommy boat transfer car (an tommy boat transfer trailer, application number 202223238917.4), preceding towing hook is fixed height generally, hardly adapts to the fire engine chassis of co-altitude, and the uniformity is relatively poor, and equipment universal rate is lower, and also can't accurate automatic alignment traction seat on the tractor, uses inconveniently. Therefore, there is a need to design a lifting adjusting device for a towing hook, which is adjustable in height and capable of automatically aligning with a towing seat, so as to improve the general purpose rate of equipment and improve the working efficiency.

Disclosure of Invention

The utility model aims at providing a towing pintle lifting adjusting device and assault boat transfer car (buggy) for solve current towing pintle and hardly adapt to the fire engine chassis of different height, the uniformity is relatively poor, and equipment universal rate is lower, and also unable accurate automatic alignment traction seat on the tractor, use inconvenient problem.

In order to solve the technical problems, the application provides a traction hook lifting adjusting device which is arranged on a front traction beam and comprises a height-adjusting guide post, an adjusting sliding sleeve fixing pin shaft and a traction hook assembly;

the height-adjusting guide posts are arranged on the front traction beam, a plurality of rows of first adjusting hole groups are arranged on the height-adjusting guide posts at intervals along a preset direction, the preset direction is perpendicular to the height direction of the height-adjusting guide posts, a plurality of first adjusting holes are arranged in each row of first adjusting hole groups, a plurality of first adjusting holes in each row of first adjusting hole groups are arranged at intervals along the height direction, and a plurality of first adjusting holes in two adjacent rows of first adjusting hole groups are staggered along the height direction;

the adjusting sliding sleeve is sleeved on the height-adjusting guide post, a plurality of rows of limiting structures which are in one-to-one correspondence with the first adjusting hole groups are arranged on the adjusting sliding sleeve, and each row of limiting structures at least comprises a second adjusting hole; the fixed pin shaft of the adjusting sliding sleeve simultaneously penetrates into one first adjusting hole of the height-adjusting guide post and one second adjusting hole of the adjusting sliding sleeve so as to limit the height position of the adjusting sliding sleeve relative to the height-adjusting guide post; the traction hook component is connected to the front part of the adjusting sliding sleeve.

Optionally, a plurality of the first adjustment holes in the plurality of columns of the first adjustment hole groups are arranged at equal intervals along the height direction.

Optionally, the height-adjusting guide post is provided with two rows of first adjusting hole groups at intervals along the preset direction, and the adjusting sliding sleeve is provided with two rows of limiting structures corresponding to the two rows of first adjusting hole groups one by one.

Optionally, each row of the limiting structures includes two second adjusting holes, four second adjusting holes in the two rows of the limiting structures are arranged at equal intervals along the up-down direction, and two second adjusting holes in one row of the limiting structures and two second adjusting holes in the other row of the limiting structures are staggered along the height direction.

Optionally, a notch avoiding the front traction beam is arranged at the lower part of the rear end of the adjusting sliding sleeve, and the lower part of the front end of the adjusting sliding sleeve is fixedly connected with the traction hook component.

Optionally, a reinforcing rib is arranged between the upper part of the front end of the adjusting sliding sleeve and the traction hook component.

Optionally, the draw hook assembly includes draw hook shell, draw hook and draw hook fixed pin, draw hook shell fixed connection and be in the front portion of adjusting the sliding sleeve, draw hook shell's rear end to be provided with along the round pin axle hole of controlling the orientation extension, draw hook fixed pin pass the round pin axle hole will draw hook's rear portion articulated connection is in draw hook shell, draw hook shell's front end is horn mouth form.

Optionally, the front upper surface and the front lower surface of the traction hook shell are symmetrically provided with mounting holes, and each mounting hole is internally provided with a secondary adjusting buffer;

the secondary adjusting buffer comprises a buffer shell, a buffer elastomer and a buffer piston, wherein a part of the buffer piston is embedded in the buffer shell in a sliding manner, one end of the buffer elastomer is propped against the inner wall of the buffer shell, the other end of the buffer elastomer is propped against the inner wall of the buffer piston, one end of the buffer piston, which extends out of the buffer shell, is arranged into a circular arc shape and is propped against the traction hook, and the sliding direction of the buffer piston relative to the buffer shell and the extension direction of the traction beam form an acute angle.

Optionally, one end of the connecting sheet is fixedly connected above the height-adjusting guide column, the other end of the connecting sheet is fixedly connected with the upper end of the reinforcing tube, and the lower end of the reinforcing tube is fixedly connected with the front traction beam.

The application also provides an assault boat transfer vehicle, which comprises the traction hook lifting adjusting device.

According to the traction hook lifting adjusting device, as the plurality of first adjusting holes in the plurality of first adjusting hole groups on the height-adjusting guide column are integrally arranged at intervals along the height direction, and the plurality of first adjusting holes in the plurality of first adjusting hole groups in different columns are sequentially arranged along the height direction. In the height adjustment process of the adjusting sliding sleeve, the first adjusting holes of different rows on the height-adjusting guide post are alternately aligned with the second adjusting holes of corresponding rows on the adjusting sliding sleeve, so that the adjusting gear can be increased while the strength of the guide post is ensured, the adjusting height of each adjusting gear is smaller, and the height application range of the traction hook lifting adjusting device is wider. Because if the same number of shift positions are set in a row of first adjustment hole groups of the height-adjusting guide post, the spacing between the upper and lower two first adjustment holes on the height-adjusting guide post is too small, the strength of the height-adjusting guide post in the traction direction becomes low. Therefore, the traction hook lifting adjusting device according to the embodiment of the application has the advantages of high strength and wider application range of adjusting height.

In addition, the effect of the submarines transfer vehicle provided by the application is the same as that of the submarines transfer vehicle due to the fact that the submarines transfer vehicle comprises the traction hook lifting adjusting device.

Drawings

For a clearer description of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a traction hook lifting adjusting device matched with a front traction beam according to an embodiment of the present application.

Fig. 2 is a second schematic structural diagram of a traction hook lifting adjusting device matched with a front traction beam according to an embodiment of the present application.

Fig. 3 is a schematic cross-sectional structure diagram of a traction hook lifting adjusting device matched with a front traction beam according to an embodiment of the present application.

Fig. 4 is an enlarged schematic view of the structure of the portion I of fig. 3.

Fig. 5 is a schematic structural view of a towing hook according to an embodiment of the present application.

The reference numerals are as follows: 100. a front traction beam; 1. heightening the guide post; 11. a first adjustment aperture; 2. adjusting the sliding sleeve; 21. a second adjustment aperture; 3. adjusting a sliding sleeve fixed pin shaft; 4. a tow hook assembly; 41. a towing hook housing; 42. a traction hook; 421. a rear support of the traction hook; 422. a traction tube; 423. a traction ring; 43. the traction hook is used for fixing the pin shaft; 44. a fixing piece; 45. a secondary adjustment buffer; 451. a buffer housing; 4511. a cylinder; 4512. a cylinder cover; 452. a buffer elastomer; 453. a buffer piston; 5. reinforcing ribs; 6. a connecting sheet; 7. and (5) reinforcing the pipe.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments herein without making any inventive effort are intended to fall within the scope of the present application.

The core of the application is to provide a traction hook lifting adjusting device and an assault boat transfer vehicle.

In order to provide a better understanding of the present application, those skilled in the art will now make further details of the present application with reference to the drawings and detailed description.

As shown in fig. 1-5, the present application is embodied to provide a hitch lift adjustment device for placement on a front draft sill 100 of a frame to be towed. The traction hook lifting adjusting device comprises a height-adjusting guide post 1, an adjusting sliding sleeve 2, an adjusting sliding sleeve fixing pin shaft 3 and a traction hook component 4. The height-adjusting guide posts 1 are arranged on the front traction beam 100, and a plurality of rows of first adjusting hole groups are arranged on the height-adjusting guide posts 1 at intervals along a preset direction, wherein the preset direction is perpendicular to the height direction of the height-adjusting guide posts 1. Preferably, the preset direction is a direction parallel to the extending direction of the front traction beam 100, and the preset direction is a frame forward and backward traveling direction when the front traction beam 100 is horizontal. The front-rear direction is shown by the arrow in fig. 1. The first adjusting holes 11 are arranged in each row of first adjusting hole groups, the first adjusting holes 11 in each row of first adjusting hole groups are arranged at intervals along the height direction, and the first adjusting holes 11 in two adjacent rows of first adjusting hole groups are staggered along the height direction.

The adjusting sliding sleeve 2 is sleeved on the height-adjusting guide column 1, a plurality of rows of limiting structures corresponding to the first adjusting hole groups in a one-to-one mode are arranged on the adjusting sliding sleeve 2, and each row of limiting structures at least comprises a second adjusting hole 21. The adjusting slide sleeve fixing pin shaft 3 simultaneously penetrates into a first adjusting hole 11 of the height-adjusting guide post 1 and a second adjusting hole 21 of the adjusting slide sleeve 2 to limit the height position of the adjusting slide sleeve 2 relative to the height-adjusting guide post 1. The traction hook component 4 is connected to the front part of the adjusting sliding sleeve 2.

Since the plurality of first adjustment holes 11 in the plurality of first adjustment hole groups on the height-adjusting guide post 1 are arranged at intervals in the height direction as a whole, and the plurality of first adjustment holes 11 in the plurality of first adjustment hole groups in different columns are arranged in sequence in the height direction. In the height adjustment process of the adjusting sliding sleeve 2, the first adjusting holes 11 of different rows on the heightening guide post 1 are alternately aligned with the second adjusting holes 21 of corresponding rows on the adjusting sliding sleeve 2, so that the adjusting gear can be increased while the strength of the guide post 1 is ensured, the adjusting height of each adjusting gear is smaller, and the height application range of the traction hook lifting adjusting device is wider. Since if the same number of shift positions are set in one row of the first adjustment hole groups of the height-adjusting guide post 1, the interval between the upper and lower first adjustment holes 11 on the height-adjusting guide post 1 is too small, the strength of the height-adjusting guide post 1 in the traction direction becomes low.

Therefore, the traction hook lifting adjusting device according to the embodiment of the application has the advantages of high strength and wider application range of adjusting height.

Further, based on the above-described embodiment, the plurality of first regulation holes 11 in the plurality of first regulation hole groups are arranged at equal intervals in the height direction. Therefore, the height change of the adjusting sliding sleeve 2 when one gear is adjusted upwards or downwards on the height-adjusting guide column 1 is the same, the integral adjusting height is convenient to calculate, and the adjustment is convenient.

Based on the above embodiment, preferably, as shown in fig. 1 and fig. 2, two rows of first adjustment hole groups are arranged on the height-adjusting guide post 1 at intervals along the preset direction, and two rows of limiting structures corresponding to the two rows of first adjustment hole groups one by one are arranged on the adjustment sliding sleeve 2. The two first adjusting hole groups are matched with the two limiting structures, so that the conventional use requirements can be met, the strength of the height adjusting guide column 1 can be ensured, and the height adjusting range is relatively wide.

Based on the above embodiment, preferably, as shown in fig. 1 and 2, each of the limiting structures includes two second adjustment holes 21, four second adjustment holes 21 in the two limiting structures are disposed at equal intervals in the up-down direction, and two second adjustment holes 21 in one of the two limiting structures are disposed at a staggered position in the height direction from two second adjustment holes 21 in the other limiting structure. As shown in fig. 1, when the height adjustment is performed, the second adjustment holes 21 under the first row limiting structure (the first row and the second row are arranged from the back to the front in fig. 1) on the adjustment sliding sleeve 2 may be aligned with the first adjustment holes 11 under the lowest first adjustment hole group of the first row on the height adjustment guide post 1 first as a height gear; then, aligning a second adjusting hole 21 below a second-row limiting structure on the adjusting sliding sleeve 2 with a first adjusting hole 11 at the lowest part of a second-row first adjusting hole group on the height-adjusting guide column 1 to serve as a next height gear; then, aligning the second adjusting holes 21 on the first row limiting structure on the adjusting sliding sleeve 2 with the first row first adjusting hole group on the height adjusting guide column 1 from the second first adjusting holes 11 at the lower number to serve as the next height gear; then, aligning a second adjusting hole 21 on a second row of limiting structures on the adjusting sliding sleeve 2 with a second row of first adjusting hole groups on the height-adjusting guide column 1 from a lower number of second first adjusting holes 11 to serve as a next height gear; and the adjustment is continued by analogy according to the steps. When the height of the adjusting sliding sleeve 2 is adjusted in this way, on the basis of the adjusting gear obtained by arranging the plurality of first adjusting holes 11 in the two rows of first adjusting hole groups of the height adjusting guide post 1 along the height direction, the height difference gear between the two adjacent first adjusting holes 11 arranged along the height direction is divided into two more times, so that the adjusting height application range of the traction hook lifting adjusting device is wider.

Based on the above embodiment, further, as shown in fig. 1, a notch for avoiding the front traction beam 100 is provided at the lower part of the rear end of the adjusting sliding sleeve 2, and the lower part of the front end of the adjusting sliding sleeve 2 is fixedly connected with the traction hook assembly 4. In this way, the traction hook component 4 connected with the lower part of the front end of the adjusting sliding sleeve 2 can be guaranteed to be lowered to the position flush with the front traction beam 100, so that the height of the original vehicle can be adapted. Preferably, two side surfaces of the lower end of the adjusting sliding sleeve 2 adjacent to the notch are arranged in an inclined triangle mode, so that the overall weight of the adjusting sliding sleeve 2 can be reduced.

Based on the above embodiment, further, as shown in fig. 1, a reinforcing rib 5 is disposed between the upper portion of the front end of the adjusting sliding sleeve 2 and the towing hook component 4, so as to improve the connection strength between the adjusting sliding sleeve 2 and the towing hook component 4.

Based on the above embodiment, further, as shown in fig. 1, the hitch assembly 4 includes a hitch housing 41, a hitch 42, and a hitch fixing pin 43. The traction hook housing 41 is fixedly connected to the front part of the adjusting slide 2. The rear end of the hitch housing 41 is provided with a pin hole extending in the left-right direction, through which a hitch fixing pin 43 passes to hinge-connect the rear portion of the hitch 42 into the hitch housing 41. The front end of the towing hook housing 41 is horn-shaped, specifically, the upper surface and the lower surface of the front end of the towing hook housing 41 are both inclined outward. This provides room for the hitch 42 to rotate up and down about the hitch-securing pin 43.

Preferably, as shown in fig. 2, a fixing piece 44 is provided at one end of the towing hook fixing pin 43, a screw hole is provided on the fixing piece 44, and the fixing piece 44 is fixed to the towing hook housing 41 by a screw passing through the screw hole, so that the towing hook fixing pin 43 can be prevented from sliding off from the towing hook housing 41.

Further, as shown in fig. 1 to 4, based on the above embodiment, the front upper surface and the front lower surface of the hitch housing 41 are symmetrically provided with mounting holes, each of which has one secondary adjustment damper 45 mounted therein. The secondary adjusting damper 45 comprises a damper housing 451, a damper elastic body 452 and a damper piston 453, a part of the damper piston 453 is slidably embedded in the damper housing 451, one end of the damper elastic body 452 is propped against the inner wall of the damper housing 451, the other end is propped against the inner wall of the damper piston 453, one end of the damper piston 453 extending out of the damper housing 451 is arranged in a circular arc shape and is propped against the towing hook 42, and the sliding direction of the damper piston 453 relative to the damper housing 451 forms an acute angle with the extending direction of the towing beam 100.

In this embodiment, the towing hook 42 can swing up and down around the towing hook fixing pin 43 in the towing hook housing 41, and the towing hook 42 is kept horizontal under the action of the two secondary buffers 45 in a natural state. Providing the buffer housing 451, the buffer piston 453, and the buffer elastic body 452 cooperate to enable up-down height adjustment of the towing hook 42. That is, the height of the hitch 42 can be further finely adjusted within the height adjustment range between the two first adjustment holes 11, so that the height adjustment range of the hitch lifting adjustment device can be further enlarged. When the tractor is used, the height of the height adjusting guide column 1 and the height adjusting sliding sleeve 2 are first-stage height adjusting mechanisms, and the height of the tractor can be approximately adjusted to a proper height for different tractors. When the towing hook 42 is in butt joint with a towing seat on a towing vehicle, fine adjustment is performed through the secondary adjusting buffer 45, and the towing hook smoothly enters the towing seat to finish connection and hanging.

In addition, the direction in which the cushion elastic body 452 is compressed can be fixed by guiding the cushion piston 453 and the cushion housing 451, and the cushion elastic body 452 can be prevented from being excessively deformed due to an unstable direction of force applied to the cushion elastic body 452. The end of the damper piston 453 protruding out of the damper housing 451 is provided in a circular arc shape, so that the damper piston 453 can be prevented from being caught with respect to the traction hook 42. The sliding direction of the buffer piston 453 relative to the buffer housing 451 forms an acute angle with the extending direction of the draft sill 100, so that when the draft hook 42 rotates by a large angle to press the buffer piston 453 on one side of the upper and lower sides, the included angle between the direction of the relatively large force acting on the buffer elastic body 452 by the draft hook 42 and the sliding direction of the buffer piston 453 relative to the buffer housing 451 is small, and the buffer piston 453 is prevented from being blocked relative to the buffer housing 451.

Preferably, as shown in fig. 4, the damper housing 451 includes a barrel 4511 having both ends opened and a cap 4512 screwed to one end of the barrel 4511, and one end of the damper elastic body 452 is abutted against the inner wall of the cap 4512 of the damper housing 451. This facilitates replacement of the buffer elastomer 452 and the buffer piston 453.

In particular, as shown in fig. 4-5, the cushion elastomer 452 may be a cushion spring. The traction hook 42 may include a traction hook rear support 421, a traction tube 422 and a traction ring 423, wherein the traction hook rear support 421 is hinged on the traction hook fixing pin shaft 43, the front end of the traction hook rear support 421 is connected with the traction tube 422, and the front end of the traction tube 422 is connected with the traction ring 423.

Based on the above embodiment, further, as shown in fig. 1, one end of the connecting piece 6 is fixedly connected above the height-adjusting guide post 1, the other end of the connecting piece 6 is fixedly connected with the upper end of the reinforcing tube 7, and the lower end of the reinforcing tube 7 is fixedly connected with the front traction beam 100. So that the connection strength of the elevation guide column 1 with the front traction beam 100 can be increased.

Finally, the application also provides an assault boat transfer vehicle, which comprises the traction hook lifting adjusting device. The effect of the assault boat transfer trolley is the same as that of the traction hook lifting adjusting device, and the effect is not repeated.

The traction hook lifting adjusting device and the assault boat transfer trolley provided by the application are described in detail. In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.

It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Claims (10)

1. A hitch lifting adjustment device for placement on a front hitch beam (100), comprising:

the height-adjusting guide column (1), the height-adjusting guide column (1) is arranged on the front traction beam (100), a plurality of first adjusting hole groups are arranged on the height-adjusting guide column (1) at intervals along a preset direction, the preset direction is perpendicular to the height direction of the height-adjusting guide column (1), a plurality of first adjusting holes (11) are arranged in each first adjusting hole group, a plurality of first adjusting holes (11) in each first adjusting hole group are arranged at intervals along the height direction, and a plurality of first adjusting holes (11) in two adjacent first adjusting hole groups are staggered along the height direction;

the adjusting sliding sleeve (2) is sleeved on the height-adjusting guide column (1), a plurality of rows of limiting structures which are in one-to-one correspondence with the first adjusting hole groups are arranged on the adjusting sliding sleeve (2), and each row of limiting structures at least comprises a second adjusting hole (21);

an adjusting sliding sleeve fixing pin shaft (3), wherein the adjusting sliding sleeve fixing pin shaft (3) simultaneously penetrates into one first adjusting hole (11) of the height-adjusting guide column (1) and one second adjusting hole (21) of the adjusting sliding sleeve (2) to limit the height position of the adjusting sliding sleeve (2) relative to the height-adjusting guide column (1); and

and the traction hook component (4) is connected to the front part of the adjusting sliding sleeve (2).

2. A traction hook lifting and lowering adjusting device according to claim 1, wherein a plurality of the first adjusting holes (11) in the plurality of the first adjusting hole groups are arranged at equal intervals in the height direction.

3. The lifting adjusting device for the towing hook according to claim 2, wherein two rows of first adjusting hole groups are arranged on the height adjusting guide column (1) at intervals along the preset direction, and two rows of limiting structures corresponding to the two rows of first adjusting hole groups one by one are arranged on the adjusting sliding sleeve (2).

4. A lifting and lowering adjusting device for a towing hook according to claim 3, wherein each of the limiting structures includes two second adjusting holes (21), four second adjusting holes (21) in two of the limiting structures are arranged at equal intervals in the up-down direction, and two second adjusting holes (21) in one of the limiting structures in two of the limiting structures are arranged offset from two second adjusting holes (21) in the other limiting structure in the height direction.

5. A lifting adjusting device for a towing hook according to any one of claims 1-4, characterized in that a notch for avoiding the front towing beam (100) is arranged at the lower part of the rear end of the adjusting sliding sleeve (2), and the lower part of the front end of the adjusting sliding sleeve (2) is fixedly connected with the towing hook component (4).

6. The lifting and lowering adjusting device for the towing hook according to claim 5, characterized in that a reinforcing rib (5) is arranged between the upper part of the front end of the adjusting sliding sleeve (2) and the towing hook component (4).

7. The lifting adjusting device for the towing hook according to claim 1, wherein the towing hook component (4) comprises a towing hook shell (41), a towing hook (42) and a towing hook fixing pin shaft (43), the towing hook shell (41) is fixedly connected to the front part of the adjusting sliding sleeve (2), a pin shaft hole extending in the left-right direction is formed in the rear end of the towing hook shell (41), the towing hook fixing pin shaft (43) passes through the pin shaft hole to enable the rear part of the towing hook (42) to be hinged in the towing hook shell (41), and the front end of the towing hook shell (41) is in a horn mouth shape.

8. A lifting and lowering adjusting device for a towing hook according to claim 7, characterized in that the front upper surface and the front lower surface of the towing hook housing (41) are symmetrically provided with mounting holes, and each mounting hole is internally provided with a secondary adjusting buffer (45);

the secondary adjusting buffer (45) comprises a buffer shell (451), a buffer elastic body (452) and a buffer piston (453), a part of the buffer piston (453) is embedded in the buffer shell (451) in a sliding mode, one end of the buffer elastic body (452) is propped against the inner wall of the buffer shell (451), the other end of the buffer elastic body is propped against the inner wall of the buffer piston (453), one end of the buffer piston (453) stretches out of the buffer shell (451) is set to be circular arc, and is propped against the traction hook (42), and the sliding direction of the buffer piston (453) relative to the buffer shell (451) forms an acute angle with the extending direction of the traction beam (100).

9. The lifting adjusting device for the towing hook according to claim 1, wherein one end of a connecting sheet (6) is fixedly connected above the height-adjusting guide column (1), the other end of the connecting sheet (6) is fixedly connected with the upper end of a reinforcing tube (7), and the lower end of the reinforcing tube (7) is fixedly connected with a front towing beam (100).

10. An assault boat transfer vehicle comprising a tow hook lifting adjustment device according to any one of claims 1 to 9.