Lifting oil cylinder support for tray truck

Abstract

The utility model discloses a lifting oil cylinder support for a pallet truck, and particularly relates to the technical field of pallet trucks, which comprises a lifting oil cylinder mounting plate, a left side bearing stress plate, a right side bearing stress plate, a left side inclined chamfer and a right side inclined chamfer, the bottom of the lifting oil cylinder mounting plate is fixedly connected with the top of the left side bearing stress plate and the top of the right side bearing stress plate, and the top of the left side inclined chamfer and the top of the right side inclined chamfer are fixedly connected with the bottom of the left side bearing stress plate and the bottom of the right side bearing stress plate. According to the lifting oil cylinder support, the left side bearing stress plate, the right side bearing stress plate, the left side inclined chamfer and the right side inclined chamfer are arranged, so that the welding area is increased, the stress on the lifting oil cylinder support is more reasonable, the stress concentration condition at a welding seam is effectively avoided, the stress value at the connecting welding seam of the oil cylinder support and a vehicle body is effectively reduced, and the product quality is improved; the structural strength and the reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pallet trucks, and more specifically, to a lifting cylinder support for a pallet truck. Background Art

[0002] It is known that the lifting cylinder support on the back plate of the pallet truck frame is connected to the lifting cylinder of the vehicle body, so that the lifting cylinder support is subjected to a large load during use. In addition to the load of the driving wheel, it also bears the additional load transmitted from the load-bearing wheel through the connecting rod mechanism; therefore, the lifting cylinder support is required to have high reliability in order to ensure the safety of the entire vehicle.

[0003] However, in actual use, the steel castings in the lifting cylinder support currently produced are as follows Figure 5 and Figure 6 As shown, there are the following deficiencies:

[0004] 1. Unreasonable structure: The structural force is parallel to the weld arrangement, resulting in stress concentration at the welding point between the lifting cylinder support and the frame back plate, which affects the structural strength, causes local tearing, and poor reliability;

[0005] 2. The two sides of the lifting cylinder support form an obtuse angle with the frame back plate. It is difficult to ensure the weld height when the two are welded together, and the welding quality is poor.

[0006] Therefore, a lifting cylinder support for a pallet truck is proposed as a further improvement, so that the stress value at the weld between the lifting cylinder support and the frame back plate can be reduced by local optimization of the lifting cylinder support, thereby improving the structural reliability; the weld quality of the lifting cylinder support can also be improved by adjusting the structural shape of the lifting cylinder support. Utility Model Content

[0007] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a lifting cylinder support for a pallet truck to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the utility model provides the following technical solution: a lifting cylinder support for a pallet truck, the lifting cylinder support comprising: a lifting cylinder mounting plate, a left-side load-bearing plate, a right-side load-bearing plate, a left-side oblique chamfer and a right-side oblique chamfer;

[0009] The bottom of the lifting cylinder mounting plate is fixedly connected to the top of the left load-bearing plate and the top of the right load-bearing plate, respectively, and the top of the left chamfer and the top of the right chamfer are fixedly connected to the bottom of the left load-bearing plate and the bottom of the right load-bearing plate, respectively;

[0010] The angle between the inner side of the left load-bearing plate and the inner side of the left chamfer and the angle between the inner side of the right load-bearing plate and the inner side of the right chamfer are both set to obtuse angles.

[0011] Furthermore, the shape of the lifting cylinder support is set to be symmetrical about the center plane.

[0012] Furthermore, the left side load-bearing plate, the right side load-bearing plate, the left side oblique chamfer and the right side oblique chamfer are integrally cast into one body.

[0013] Furthermore, the shape formed by the top and back of the left-side load-bearing plate and the shape formed by the top and back of the right-side load-bearing plate are both set to be L-shaped.

[0014] Furthermore, the back of the lifting cylinder mounting plate, the back of the left load-bearing plate and the back of the right load-bearing plate are all fixedly mounted on the frame back plate.

[0015] Furthermore, a through hole is provided on the top of the lifting cylinder mounting plate.

[0016] Technical effects and advantages of the utility model:

[0017] 1. Compared with the prior art, by setting the left-side load-bearing plate, the right-side load-bearing plate, the left-side chamfer and the right-side chamfer, the welding area is increased, the force of the lifting cylinder support is more reasonable, and the materials and welds are arranged along the direction of the main force, thereby effectively avoiding the stress concentration at the welds, effectively reducing the stress value at the weld connecting the cylinder support and the vehicle body, and improving the quality of the product; improving the structural strength and reliability;

[0018] 2. Compared with the prior art, the angle between the left chamfer and the left load-bearing plate and the angle between the right chamfer and the right load-bearing plate are set to 120°, so that the overall stress distribution is more uniform; and according to the CAE simulation results, there is no stress concentration at the weld of the lifting cylinder support of the utility model, and the maximum stress value near the weld is reduced from 264MPa of the original structure to 110MPa, which is reduced by about 58%. Therefore, the optimized structural shape of the lifting cylinder support reduces the requirements for welding quality and reduces manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a side view of the lifting cylinder support of the utility model.

[0021] Figure 3 This is a schematic diagram of the utility model of the lifting cylinder support installed on the frame back plate.

[0022] Figure 4 It is a structural schematic diagram of the lifting cylinder support of the utility model.

[0023] Figure 5 This is a schematic diagram of the lifting cylinder support before improvement.

[0024] Figure 6 This is a schematic diagram of the lifting cylinder support on the frame back plate before improvement.

[0025] The accompanying drawings are marked as follows:

[0026] 1. Lifting cylinder support;

[0027] 11. Lifting cylinder mounting plate; 12. Left side load-bearing plate; 13. Right side load-bearing plate; 14. Left side oblique chamfer; 15. Right side oblique chamfer;

[0028] 2. Frame back plate; 3. Support arm; 4. Bracket; 5. Lifting cylinder. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] As attached Figure 1-4 A lifting cylinder support for a pallet truck is shown, wherein the lifting cylinder support 1 comprises: a lifting cylinder mounting plate 11, a left-side load-bearing plate 12, a right-side load-bearing plate 13, a left-side oblique chamfer 14 and a right-side oblique chamfer 15;

[0031] The bottom of the lifting cylinder mounting plate 11 is fixedly connected to the top of the left load-bearing plate 12 and the top of the right load-bearing plate 13, respectively. The top of the left chamfer 14 and the top of the right chamfer 15 are fixedly connected to the bottom of the left load-bearing plate 12 and the bottom of the right load-bearing plate 13, respectively.

[0032] The angle between the inner side of the left load-bearing plate 12 and the inner side of the left chamfer 14 and the angle between the inner side of the right load-bearing plate 13 and the inner side of the right chamfer 15 are both set to be obtuse angles.

[0033] The shape of the lifting cylinder support 1 is arranged to be symmetrical with respect to the central plane.

[0034] Among them, the utility model adopts cast steel; in order to make the force of the lifting cylinder support 1 more reasonable, the left side bearing force plate 12 and the right side bearing force plate 13 are extended from top to bottom;

[0035] Among them, the utility model has a reasonable structural design, and the materials and welds are arranged along the direction of the main force. The added left chamfer 14 and right chamfer 15 not only increase the welding area, but also effectively avoid stress concentration at the weld, thereby improving the structural strength and reliability;

[0036] Angle embodiment: the angle between the left chamfer 14 and the left load-bearing plate 12 and the angle between the right chamfer 15 and the right load-bearing plate 13 are both 120°, so that the overall stress distribution is more uniform; according to the CAE simulation results, there is no stress concentration at the weld of the lifting cylinder support 1 of the utility model, and the maximum stress value near the weld is reduced from 264MPa of the original structure to 110MPa, which is reduced by about 58%;

[0037] In a preferred embodiment, as shown in the attached Figure 1-4 As shown, the left side load-bearing plate 12, the right side load-bearing plate 13, the left side oblique chamfer 14 and the right side oblique chamfer 15 are integrally cast into one body.

[0038] The shape formed by the top and back of the left side load-bearing plate 12 and the shape formed by the top and back of the right side load-bearing plate 13 are both set to be L-shaped.

[0039] The back of the lifting cylinder mounting plate 11 , the back of the left load-bearing plate 12 , and the back of the right load-bearing plate 13 are all fixedly mounted on the frame back plate 2 .

[0040] Compared with the existing structure, the utility model effectively reduces the stress value at the connection weld between the lifting cylinder support 1 and the frame back plate 2, thereby improving the quality of the product;

[0041] In a preferred embodiment, as shown in the attached Figure 1-4 As shown, a through hole 111 is provided on the top of the lifting cylinder mounting plate 11 so as to reduce the cost and improve the strength against deformation.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting cylinder support for a pallet truck, characterized in that: The lifting cylinder support (1) comprises: a lifting cylinder mounting plate (11), a left-side load-bearing plate (12), a right-side load-bearing plate (13), a left-side oblique chamfer (14) and a right-side oblique chamfer (15); The bottom of the lifting cylinder mounting plate (11) is fixedly connected to the top of the left load-bearing plate (12) and the top of the right load-bearing plate (13), respectively; the top of the left chamfer (14) and the top of the right chamfer (15) are fixedly connected to the bottom of the left load-bearing plate (12) and the bottom of the right load-bearing plate (13), respectively; The angle between the inner side of the left load-bearing plate (12) and the inner side of the left chamfer (14) and the angle between the inner side of the right load-bearing plate (13) and the inner side of the right chamfer (15) are both set to be obtuse angles.

2. The lifting cylinder support for a pallet truck according to claim 1, characterized in that: The shape of the lifting cylinder support (1) is arranged to be symmetrical with respect to the central plane.

3. The lifting cylinder support for a pallet truck according to claim 2, characterized in that: The left side load-bearing plate (12), the right side load-bearing plate (13), the left side oblique chamfer (14) and the right side oblique chamfer (15) are integrally cast into one body.

4. The lifting cylinder support for a pallet truck according to claim 1, characterized in that: The shape formed by the top and back of the left-side load-bearing plate (12) and the shape formed by the top and back of the right-side load-bearing plate (13) are both set to be L-shaped.

5. The lifting cylinder support for a pallet truck according to claim 4, characterized in that: The back of the lifting cylinder mounting plate (11), the back of the left load-bearing plate (12) and the back of the right load-bearing plate (13) are all fixedly mounted on the vehicle frame back plate (2).

6. The lifting cylinder support for a pallet truck according to claim 1, characterized in that: A through hole (111) is provided on the top of the lifting cylinder mounting plate (11).

Images