CN219134341U

CN219134341U - Truck curved beam spare tire rack

Info

Publication number: CN219134341U
Application number: CN202320252935.3U
Authority: CN
Inventors: 乔国章
Original assignee: Shulan City Tongyong Machinery Co ltd
Current assignee: Shulan City Tongyong Machinery Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-06-06
Anticipated expiration: 2033-02-20

Abstract

A truck bent beam spare tire rack belongs to the technical field of spare tire racks and comprises two cross beams, two connecting plates and a lifting mechanism arranged between the two cross beams. The middle part of the cross beam is provided with a trapezoid bend I with a bulge facing the direction of the spare tire and a trapezoid bend II with a bulge facing the lifting mechanism. The utility model eliminates the use of a flat pad, improves the straight beam into the structural form of a bent beam, reduces the weight and reduces the material cost on the premise of having the same function. The outer frame of the lifting mechanism adopts a rectangular pipe, replaces the multi-plate welding structural form in the prior art, reduces the number of parts of the outer frame from 6 to 3, reduces the number of welding lines from 8 to 4, and greatly improves the production efficiency. The utility model also changes the design position of the round corner structure, simplifies the production process and reduces the production cost while not changing the assembly requirement.

Description

Truck curved beam spare tire rack

Technical Field

The utility model belongs to the technical field of spare tire carriers, and particularly relates to a truck bent beam spare tire carrier.

Background

The prior art truck frame has two parallel, 650mm to 750mm channel stringers with opposite openings, and a spare tire carrier mounted below the rear of the frame, as shown in fig. 1, and consisting of angle beams and a lift mechanism. Two sides of the angle steel beam are called as vertical plates, the other is called as a lower folded plate, the two angle steel beams of the spare tire rack are parallel and the vertical plates are opposite, and two ends of the lower folded plate are lapped on the upper bearing surface of the lower leg of the groove-shaped longitudinal beam and are connected by a fastener. The lifting mechanism is connected to the middle part between the two angle steel beams through a fastener, the angle steel beam lower folded plate is fixedly connected with a flat base plate, the spare tire wheel web is tightly attached to the flat base plate through a chain of the lifting mechanism, and the lower plane of the flat base plate is lower than the lower plane of the lower leg of the channel steel. The lifting mechanism comprises a convex frame, a chain wheel, a chain, a rotating shaft and the like, wherein the convex frame consists of six plates, the middle part of the convex frame is a rectangular pipe, one end of the pipe is provided with four convex wings which are identical in shape and size and extend to two sides along the width of the rectangular pipe respectively, two convex wing ends on each side are welded with a rectangular connecting plate with a long edge in the horizontal direction, and one long edge of the rectangular connecting plate is provided with a round corner structure which inclines to the upper part of a convex wing shoulder. During assembly, the convex heads of the convex frames face downwards, the two rectangular connecting plates are parallel to the angle steel beams, the lifting mechanism is installed in the middle of the two angle steel beams by virtue of the introduction of the two round corner structures from the upper part of the angle steel beam edge line, and then the lifting mechanism is connected by using a fastener, so that the assembly is completed.

The thickness of the flat backing plate reaches 10 mm-25 mm, the weight is equivalent to 20% -60% of the angle steel beam, and the unnecessary weight and the material cost are increased. Because the rectangular connecting plate fillet structure exists, the frame of the lifting mechanism cannot be designed to be provided with the convex wings which avoid fillets, the number of parts is increased, the manufacturing precision is difficult to ensure, the structure is complex, and the cost is increased.

There is a need in the art for a new solution to this problem.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the technical problems of complex structure, heavy weight, low manufacturing precision and high cost of the truck spare tire rack in the prior art are solved.

The truck bent beam spare tire rack comprises two cross beams, two connecting plates and a lifting mechanism arranged between the two cross beams, wherein the two cross beams are transversely arranged on two groove-shaped longitudinal beams at the rear part of a truck frame respectively, each cross beam comprises a vertical plate and a lower folded plate, the two cross beams are symmetrically arranged on the groove-shaped longitudinal beams, two ends of each cross beam are fixedly connected with the groove-shaped longitudinal beams through the lower folded plates and bolts, and the vertical plates of the two cross beams are oppositely arranged; the two opposite sides of the outer frame of the lifting mechanism are respectively fixedly provided with a connecting plate; two mounting holes are formed in the connecting plate and are fixedly connected with mounting holes formed in the vertical plate of the cross beam in a corresponding mode through bolts; the middle part of crossbeam is provided with trapezoidal curved I, and the protruding direction of trapezoidal curved I is towards the spare tyre, and the base of the protruding side of trapezoidal curved I is laminated with the wheel web of spare tyre.

The outer frame of elevating system adopts the rectangular pipe, and two opposite lateral walls of rectangular pipe are respectively with connecting plate fixed connection, and the connecting plate is dull and stereotyped.

The upper edge of the side of the crossbeam, which is provided with the lifting mechanism, is provided with a round corner structure which is bent back to the lifting mechanism.

The middle part of crossbeam still is provided with trapezoidal curved II, and the protruding direction of trapezoidal curved II is towards elevating system, and the base length of the protruding side of trapezoidal curved II is greater than the minimum hole margin of two mounting holes that set up on the connecting plate.

The cross beam is an angle steel beam, a steel channel beam or a variable cross section cross beam.

The variable cross-section beam further comprises an upper folded plate; the upper folded plate and the lower folded plate are arranged on the same side of the vertical plate, and the outer lateral edge of the upper folded plate is in an outer convex shape relative to the vertical plate; the outside horizontal limit of lower folded plate is for the indent of riser, and the outside horizontal limit of indent's lower folded plate and the outside horizontal limit of outer convex upper folded plate are the axisymmetric setting with the long limit perpendicular bisector of riser, and the junction of lower folded plate and riser and the junction of upper folded plate and riser all pass through with the fillet structure.

Through the design scheme, the utility model has the following beneficial effects:

the utility model eliminates the use of a flat pad, improves the straight beam into the structural form of a bent beam, reduces the weight and reduces the material cost on the premise of having the same function.

The outer frame of elevating system adopts the rectangular pipe, has replaced the welded structural style of many plates of prior art to two positive boards of rectangular pipe have replaced the convex board that two material utilization rates are low, set up trapezoidal curved II on the crossbeam simultaneously for the installation of cooperation rectangular pipe and connecting plate. The number of parts of the outer frame is reduced from 6 to 3, and the number of welding lines is reduced from 8 to 4, so that the production efficiency is greatly improved, the production process is simplified, and the production cost is reduced.

The connecting plate is changed into a flat plate, a round corner structure is omitted, a round corner structure is additionally arranged at the bending part of the lower folded plate and the vertical plate, the rectangular connecting plate is flat plate by virtue of the introduction of the round corner structure, the assembly efficiency is not affected, and the production process of the connecting plate is simplified. The round corners on the cross beam can be synchronously punched when the trapezoid bends are punched, so that the production process is not increased, and the production cost is reduced.

Drawings

The utility model is further described with reference to the drawings and detailed description which follow:

FIG. 1 is a schematic view of a truck spare tire carrier in the prior art;

FIG. 2 is a schematic view of a truck camber beam spare tire carrier according to the present utility model;

FIG. 3 is a schematic view of a truck camber beam spare tire carrier according to the present utility model;

FIG. 4 is a schematic top view of a truck camber beam spare tire carrier of the present utility model;

FIG. 5 is a schematic view showing the structure of a truck camber beam spare tire carrier in use according to the present utility model;

FIG. 6 is a schematic view showing the structure of a truck camber beam spare tire carrier according to the present utility model in use.

In the figure, a cross beam 1-, a connecting plate 2-, a lifting mechanism 3-, a groove-shaped longitudinal beam 4-, a flat base plate 5-, a round angle structure 6-, a convex wing 7-, a vertical plate 101-, a lower folded plate 102-and an upper folded plate 103-are arranged.

Detailed Description

As shown in the figure, the truck bent beam spare tire rack comprises two cross beams 1, two connecting plates 2 and a lifting mechanism 3 arranged between the two cross beams, wherein the two cross beams 1 are transversely arranged on two groove-shaped longitudinal beams 4 arranged at the rear part of a truck frame, each cross beam 1 comprises a vertical plate 101 and a lower folded plate 102, the two cross beams 1 are symmetrically arranged on the two groove-shaped longitudinal beams 4 at the rear part of the truck frame front and back, two ends of each cross beam 1 are fixedly connected with the groove-shaped longitudinal beams 4 through the lower folded plates 102 and bolts, and the vertical plates 101 of the two cross beams 1 are oppositely arranged; the two opposite sides of the lifting mechanism 3 are respectively fixedly provided with a connecting plate 2; two mounting holes are formed in the connecting plate 2 and are fixedly connected with the mounting holes formed in the vertical plate 101 of the cross beam 1 in a corresponding mode through bolts; the middle part of crossbeam 1 is provided with trapezoidal curved I, and the protruding direction of trapezoidal curved I is towards the spare tyre, and the base of the protruding side of trapezoidal curved I is laminated with the wheel web of spare tyre. The trapezoidal bend I replaces the flat base plate 5 in the prior art, and the height of the trapezoidal bend I is equal to the thickness of the flat base plate 5, so that after installation is finished, the outer surface of the convex side of the trapezoidal bend I is closer to the ground than the lower plane of the lower leg of the channel steel. The middle part of crossbeam 1 still is provided with trapezoidal curved II, and the protruding direction of trapezoidal curved II is towards elevating system 3, and the base length of the protruding side of trapezoidal curved II is greater than the minimum hole margin of two mounting holes that set up on the connecting plate 2.

The connecting plate 2 is a flat plate, and a round corner structure 6 at the lower edge of the connecting plate 2 in the prior art is removed. The outer frame of the lifting mechanism 3 does not need to be provided with the convex wing 7 which avoids the round corner structure 6. In order to simplify the structure and the production process, the outer frame of the lifting mechanism 3 in the utility model adopts a rectangular pipe, and two opposite side walls of the rectangular pipe are respectively fixedly connected with the connecting plate 2; the beam 1 is provided with a round corner structure 6 which is bent back to the lifting mechanism 3 at the upper edge of the side which is provided with the lifting mechanism 3, so that the assembly requirement can be met as well.

The cross beam 1 can have various structures, and can be a steel channel beam, an angle beam as shown in fig. 3 and a variable cross-section cross beam as shown in fig. 2. As shown in fig. 2, the variable cross-section beam further comprises an upper flap 103; the upper folded plate 103 and the lower folded plate 102 are arranged on the same side of the vertical plate 101, and the outer lateral edge of the upper folded plate 103 is in an outward convex shape relative to the vertical plate 101; the outer lateral edges of the lower folded plates 102 are concave relative to the vertical plate 101, and the outer lateral edges of the concave lower folded plates 102 and the outer lateral edges of the convex upper folded plates 103 are axisymmetrically arranged with respect to the long-side perpendicular bisector of the vertical plate 101. The corner rounding structures 6 are arranged at the bending positions of the upper folded plate 103 and the vertical plate 101 and the bending positions of the lower folded plate 102 and the vertical plate 101. Compared with the traditional angle steel beam, the variable cross-section beam with the characteristic shape has the bending resistance section modulus distribution rule similar to the angle steel beam bending moment distribution rule of uniformly distributed load in the middle part, and is similar to an equal-strength beam. In sheet metal blanking layout, can realize the seamless concatenation of end to end between the adjacent two sheet metal parts of variable cross section crossbeam are expanded, the blanking unloading is carried out to the coil stock that is used with variable cross section crossbeam length isopiestic width again in the cooperation, and concave edge and chimb of two adjacent sheet metal parts are punched out to a sword, make the unloading process realize zero waste material, the rational utilization material for this variable cross section crossbeam not only has light in weight's beneficial effect under the prerequisite that satisfies intensity and rigidity requirement, still reduced surplus material by a wide margin, reduced material cost, make manufacturing cost also show and reduce.

Claims

1. The utility model provides a truck curved beam spare tire rack, includes two crossbeams (1), two connecting plates (2) and installs elevating system (3) between two crossbeams, two crossbeam (1) are all transversely set up two groove-shaped longitudinal beams (4) at truck frame rear portion, and crossbeam (1) are including riser (101) and lower folded plate (102), and two crossbeam (1) symmetry are installed on groove-shaped longitudinal beam (4), and the both ends of crossbeam (1) are through lower folded plate (102) and bolt and groove-shaped longitudinal beam (4) fixed connection, riser (101) of two crossbeam (1) are relative to setting; the two opposite sides of the outer frame of the lifting mechanism (3) are respectively fixedly provided with a connecting plate (2); two mounting holes are formed in the connecting plate (2), and the two mounting holes are fixedly connected with the mounting holes formed in the vertical plate (101) of the cross beam (1) in a corresponding mode through bolts; the method is characterized in that: the middle part of crossbeam (1) is provided with trapezoidal curved I, and the protruding direction of trapezoidal curved I is towards the spare tyre, and the base of the protruding side of trapezoidal curved I is laminated with the wheel web of spare tyre.

2. A truck camber beam spare tire rack according to claim 1, wherein: the outer frame of elevating system (3) adopts rectangular pipe, and two opposite lateral walls of rectangular pipe are respectively with connecting plate (2) fixed connection, and connecting plate (2) are dull and stereotyped.

3. A truck camber beam spare tire rack according to claim 2, wherein: the upper edge of the side of the crossbeam (1) which is provided with the lifting mechanism (3) is provided with a round corner structure (6) which is bent back to the lifting mechanism (3).

4. A truck camber beam spare tire rack according to claim 2, wherein: the middle part of crossbeam (1) still is provided with trapezoidal curved II, and the protruding direction of trapezoidal curved II is towards elevating system (3), and the base length of the protruding side of trapezoidal curved II is greater than the minimum hole margin of two mounting holes that set up on connecting plate (2).

5. A truck camber beam spare tire rack according to claim 1, wherein: the cross beam (1) is an angle steel beam, a steel channel beam or a variable cross section cross beam.

6. The truck camber beam spare tire rack of claim 5, wherein: the variable cross-section beam further comprises an upper folded plate (103); the upper folded plate (103) and the lower folded plate (102) are arranged on the same side of the vertical plate (101), and the outer lateral edge of the upper folded plate (103) is in a convex shape relative to the vertical plate (101); the outer lateral edges of the lower folded plates (102) are concave relative to the vertical plate (101), the outer lateral edges of the concave lower folded plates (102) and the outer lateral edges of the outer convex upper folded plates (103) are axisymmetrically arranged, and the connection parts of the lower folded plates (102) and the vertical plate (101) and the connection parts of the upper folded plates (103) and the vertical plate (101) are in transition with round corner structures (6).