CN218198054U

CN218198054U - Rear door lock hook of dump truck

Info

Publication number: CN218198054U
Application number: CN202221891521.7U
Authority: CN
Inventors: 范亚卫; 吕新强; 李超鹏; 崔晓锋; 赵新刚
Original assignee: Shaanxi Tongli Special Vehicle Co ltd; Shaanxi Automobile Group Co Ltd
Current assignee: Shaanxi Tongli Special Vehicle Co ltd; Shaanxi Automobile Group Co Ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2023-01-03
Anticipated expiration: 2032-07-21

Abstract

The utility model relates to a rear door lock hook of a dump truck, which comprises a fixed support, a hinge and a lock hook hinged with the hinge and the fixed support respectively; the lock hook is formed by integrally welding the side plates at the two sides and the base plate, the side plates at the two sides are provided with the first arc sections at the upper parts, the first arc sections of the lock hook are in surface line contact with the rear door, the locking state of the lock hook and the rear door can be ensured only by adjusting the tensioning degree of the chain and the angle of the lock hook, the lock hook is suitable for the thickness size change of the rear door of each dump truck, and the positioning size of the fixed support does not need to be frequently adjusted according to the thickness size of the rear door of the dump truck.

Description

Rear door lock hook of dump truck

Technical Field

The utility model relates to a tipper accessory technical field especially relates to a tipper back door lock hook.

Background

The dumper is a main transport tool for transporting goods and is widely applied to industries such as buildings and the like. Considering the requirements of the use working conditions of the dump truck, the rear door of the dump truck needs to be kept in a reliable locking state in the transportation process, and the rear door is required to be opened automatically for unloading when unloading;

when the rear door assembly of the container of the existing dump truck is closed, the existing lock hook is provided with a straight plate section, the straight plate section of the lock hook and the lower end surface of the rear door assembly are in a surface-to-surface contact structure, the rear door of each dump truck is influenced by a processing technology, the thicknesses of the rear door are possibly different, in order to ensure the locking state of the lock hook and the rear door, the positioning position and the size of a fixed support are required to be frequently changed, meanwhile, the lock hook is prone to forward tilting or backward tilting, and the phenomenon cannot be eliminated by adjusting the eyelet bolt.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tipper back door latch hook to prior art not enough, solved the problem that can't adapt to the back door thickness change.

The utility model discloses an adopt following technical scheme to realize:

a dump truck rear door latch hook comprising: the hinge comprises a fixed support, a hinge and a latch hook which is respectively hinged with the hinge and the fixed support;

the lock hook comprises two side plates, wherein each side plate is provided with a first arc section at the upper part, a first straight section and a first inclined plate section with the lower part obliquely arranged with the first straight section, the lower end of the first inclined plate section is in a semi-circular arc shape, and a shoulder part is arranged at the lower part of the first arc section in the inclined angle of the first arc section and the first inclined plate section.

Preferably, the rear door is in line contact with one surface of the circular arc section.

Preferably, two ends of the shoulder part are in circular arc transition with the first circular arc section and the second inclined plate section respectively.

Preferably, a base plate is arranged between the two side plates in parallel, and the base plate is provided with a circular arc section II, a straight plate section II and an inclined plate section II which are matched with the side plates.

Preferably, the shoulder parts of the two side plates are coaxially provided with chain pin shaft holes.

Preferably, the lower ends of the first inclined plate sections of the two side plates and the second inclined plate sections of the base plate are coaxially provided with lock hook pin shaft holes.

Preferably, the two side plates and the base plate are made of steel plates.

Preferably, the two side plates and the base plate are welded pieces or cast pieces.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model discloses a latch hook is formed by both sides curb plate and backing plate welding an organic whole, and the both sides curb plate has the arc section one on upper portion, and the arc section one of latch hook carries out the surface line contact with the back door, only needs the tensioning degree through adjusting the chain, adjusts the angle of latch hook, can guarantee latch hook and back door locking state, is adapted to the thickness size change of each tipper back door, need not adjust fixing support's location size according to the thickness size of tipper back door frequently moreover.

Drawings

The utility model is further described with the following drawings:

fig. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a schematic view of the side plate structure of the present invention;

FIG. 3 is a schematic view of the structure of the backing plate of the present invention;

FIG. 4 is a side view of the overall structure of the present invention;

fig. 5 is a schematic view of the latch hook assembly structure of the present invention.

Description of the reference numerals

1. A side plate; 2. a base plate; 3. a latch hook; 4. a rear door; 5. fixing a support; 6. a chain; 7. a chain pin shaft hole; 8. a lock hook pin shaft hole; 101. a circular arc section; 102. a straight plate section; 103. a ramp section; 104. a shoulder portion.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1 to 5: a dump truck rear door latch hook comprising: the self-dumping truck comprises a fixed support 5 welded on a bottom plate of the self-dumping truck, one end of a hinge 6 connected to a pulling seat on a chassis of the self-dumping truck through an eyelet bolt, and a latch hook 3 hinged with the other end of the hinge 6 and the fixed support 5;

the lock hook 3 comprises two side plates 1, wherein each of the two side plates 1 is provided with a first arc section 101 at the upper part, a first straight section 102 and a first inclined section 103 with the lower part obliquely arranged with the first straight section 102, the lower end of the first inclined section 103 is in a semi-arc shape, a shoulder part 104 hinged with the chain 6 is arranged at the lower part of the first arc section 101 in the oblique angle of the first arc section 101 and the first inclined section 103, and two ends of the shoulder part 104 are in smooth arc transition with the first arc section 101 and the first inclined section 103 respectively;

a base plate 2 is arranged between the two side plates 1, the base plate 2 is provided with a second arc section, a second straight plate section and a second inclined plate section which are matched with the side plates 1, the second straight line section of the base plate 2 is parallel to the first straight line section 102 of the side plates 1, and the width of the second straight line section of the base plate 2 is smaller than or equal to the width of the first straight line section 102 of the side plates 1;

the shoulders 104 of the two side plates 1 are coaxially provided with chain pin shaft holes which are hinged with the chain 6 through chain pin shafts matched with each other; the lower ends of the inclined plate sections I103 of the two side plates 1 and the inclined plate sections II of the backing plate 2 are coaxially provided with lock hook pin shaft holes, the two side plates 1 and the backing plate 2 are hinged with the fixed base 5 through matched lock hook pin shafts, the two side plates 1 and the backing plate 2 are made of steel plates, the two side plates 1 are welded or cast into a whole through the backing plate 2 between the two side plates, and after the backing plate 2 is placed between the side plates 1 at the two sides, the chain pin shaft holes can be ensured to be coaxial, and the lock hook pin shaft holes are coaxial;

the assembly principle is as follows: fixing support 5 is articulated through the lock hook round pin axle hole of lock hook round pin axle and latch hook 3, chain 6 is articulated through the chain round pin axle hole of chain round pin axle and lock hook 3, the arc section 101 of latch hook 3 carries out facial line contact (plane is tangent with the arc surface promptly) with back door 4, fixing support 5 position is unchangeable, only need through the tensioning degree of adjusting chain 6, adjust the angle of latch hook 3, can guarantee latch hook 3 and back door 4 locking state, be applicable to the thickness size of each tipper back door, and the location size of fixing support 5 need not frequently be adjusted according to the thickness size of tipper back door.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a tipper back door latch hook which characterized in that includes: the hinge comprises a fixed support (5), a hinge (6) and a latch hook (3) which is respectively hinged with the hinge (6) and the fixed support (5);

latch hook (3) include two curb plates (1), two curb plate (1) all have arc section one (101) on upper portion, straight plate section one (102) and lower part and the sloping plate section one (103) that straight plate section one (102) slope set up, the lower extreme of sloping plate section one (103) is the semicircle arcuation, and arc section one (101) lower part position department in the inclination that arc section one (101) and sloping plate section one (103) are located has shoulder (104).

2. The dump truck rear door latch hook according to claim 1, further comprising a rear door (4), wherein the rear door (4) is in line contact with the first arc segment (101).

3. The dump truck rear door latch hook according to claim 1, wherein both ends of the shoulder (104) are respectively in arc transition with a first arc segment (101) and a first inclined plate segment (103).

4. The dump truck back door latch hook according to claim 1, characterized in that a backing plate (2) is arranged in parallel between the two side plates (1), and the backing plate (2) is provided with a second arc section, a second straight plate section and a second inclined plate section which are matched with the side plates (1).

5. The dump truck rear door latch hook according to claim 1, characterized in that chain pin shaft holes are coaxially arranged at the shoulder portions (104) of the two side plates (1).

6. The dump truck rear door latch hook according to claim 4, characterized in that latch hook pin shaft holes are coaxially formed at the lower ends of the first inclined plate section (103) of the two side plates (1) and the second inclined plate section of the backing plate (2).

7. The latch hook for the rear door of the dump truck according to claim 4, wherein the two side plates (1) and the backing plate (2) are made of steel plates.

8. The dumper rear door lock hook according to claim 7, characterized in that the two side plates (1) and the backing plate (2) are welded pieces or cast pieces.