A welded structure of the cab frame of a three-way stacker forklift for upward movement of people

Abstract

A welded structure of the cab frame of a three-way stacker forklift for people going upward, including an upper frame, a middle frame, a lower frame, and a cantilever frame. The upper frame includes a hollow cavity formed by a top fan mounting plate and a rear roof guard plate. The middle frame includes a hollow cavity formed by a first bent vertical plate and a second bent vertical plate. The lower frame forms a hollow cavity between the chassis assembly plate and the standing plate and forms a support by arranging a main roller vertical plate and the inner extension of the chassis assembly plate into the hollow cavity. The cantilever frame is composed of plates, rectangular tubes, and round steel. The upper frame, the middle frame, and the lower frame include multiple bent plates, which on the one hand meet the requirements of sudden changes in the structural shape and on the other hand increase the stress area. There are multiple mounting plates for instruments, fans, lighting lamps, storage racks, etc. inside the cab. The advantages are as follows: The hollow structure reduces the weight, is not easily bent and damaged, improves the structural strength while reducing the material cost; the design of the bent plates can improve the stress uniformity.

Description

Technical Field

[0001] The present invention relates to the technical field of forklift equipment, and particularly to a welded structure of a cab frame for a three-way stacking forklift for upward movement of personnel. Background Art

[0002] A forklift is a handling and stacking tool with a relatively high usage frequency in the logistics industry, and it completes short-distance transportation, loading and unloading, and stacking under the driving and control of an operator. As a crucial component in a forklift for upward movement of personnel, the cab plays a bridging role in connecting components such as the mast and the front auxiliary mast, and at the same time is the activity space for the operator. Therefore, the cab has very high requirements for the rationality of the structural design and strength. The cab not only needs to control the weight but also meet the high-strength requirements.

[0003] In the prior art, forklifts cannot meet the dual requirements of weight and high strength. At the same time, since the cab is the activity space for the driver for a long time, an unreasonable structure will reduce the driving experience and the driving safety factor.

[0004] The present invention proposes a welded structure of a cab frame for a three-way stacking forklift for upward movement of personnel to solve the above technical problems. Summary of the Invention

[0005] The advantages are as follows:

[0006] (1) In the welded structure of the cab frame for a three-way stacking forklift for upward movement of personnel according to the present invention, the upper frame, the middle frame, and the lower frame are all hollow structures. The hollow structure is light in weight and not easily damaged, and can greatly improve the structural strength on the basis of meeting the weight requirements;

[0007] (2) In the welded structure of the cab frame for a three-way stacking forklift for upward movement of personnel according to the present invention, multiple plate-like structures are bent plate-like structures, which increase the force-bearing surface, improve the force uniformity, further avoid the situation of damage due to folding, and improve the structural strength of the cab;

[0008] (3) The welded structure of the cab frame for a three-way stacking forklift for upward movement of personnel according to the present invention saves materials, has a reasonable structural design, and reduces costs while meeting the requirements of the cab. Brief Description of the Drawings

[0009] The following further describes the specific embodiments in conjunction with the drawings, where:

[0010] Figure 1 、 2 are overall schematic diagrams of a welded structure of a cab frame for a three-way stacking forklift for upward movement of personnel according to the present invention from different angles;

[0011] Figure 3 is a partial schematic diagram of the structure with the first plate, the second plate, and the rear glass mounting plate hidden;

[0012] Figure 4 It is a plan top view of the first bent vertical plate and the second bent vertical plate.

[0013] The specific structures corresponding to the numbers are as follows:

[0014] Rear sealing plate 1 of the overhead guard, first rectangular pipe 2, top fan mounting plate 3, rear glass mounting plate 4, first bent vertical plate 5, second bent vertical plate 6, main roller vertical plate 7, first plate 8, second plate 9, lower side roller vertical plate 10, standing plate 11, chassis plate 12, chassis lower bent plate 13, main connecting bent plate 14, middle connecting bent plate 15 of the chassis, front connecting bent plate 16, third plate 17, front glass mounting plate 18, display screen bracket 19, instrument panel wire threading bent plate 20, instrument panel chassis 21, side plate of the overhead guard 22, second rectangular pipe 23, fourth plate 24, first round steel 25, fifth plate 26, guardrail connecting plate 27, storage rack 28, seat component connecting plate 29, wire drawing encoder mounting plate 30, second round steel 31, diagonal stay 32, lamp mounting plate 33.

[0015] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0016] Specific Embodiment 1:

[0017] A welded structure of a cab frame for a three-way stacker forklift for upward movement of people includes: an upper frame, a middle frame, a lower frame, and a cantilever frame. The upper frame is fixed to the middle frame, the middle frame is fixed to the lower frame, the cantilever frame is fixed to the upper frame, and at least one of the upper frame, the middle frame, the lower frame, and the cantilever frame is a hollow cavity part.

[0018] Among them, the upper frame includes a rear sealing plate 1 of the overhead guard, a first rectangular tube 2, and a rear glass mounting plate 4. The front end of the rear sealing plate 1 is fixed to the first rectangular tube 2, and the rear end is fixed to the rear glass mounting plate 4. The rear sealing plate 1 of the overhead guard, the first rectangular tube 2, and the rear glass mounting plate 4 are all fixed to the middle frame; the upper frame further includes a top fan mounting plate 3, which is placed at a certain distance below the rear sealing plate 1 of the overhead guard and the lower surface of the top fan mounting plate 3 is fixed to the first rectangular tube 2. The upper surface of the rear sealing plate 1 of the overhead guard is fixed to the first rectangular tube 2. The top fan mounting plate 3 is fixed to the middle frame and the rear glass mounting plate 4, and a hollow cavity is formed between the top fan mounting plate 3 and the rear glass mounting plate 4; the middle frame includes a first bent vertical plate 5, a second bent vertical plate 6, a main roller vertical plate 7, a first plate 8, a second plate 9, and a lower side roller vertical plate 10. Two groups of the first bent vertical plate 5, the second bent vertical plate 6, and the main roller vertical plate 7 are symmetrically arranged on both sides of the upper frame. There is a space between the first bent vertical plate 5 and the second bent vertical plate 6, and they are respectively arranged inside and outside. The upper end of the first bent vertical plate 5 is fixed to both side surfaces of the top fan mounting plate 3. The second bent vertical plate 6 is fixed to both side surfaces of the rear sealing plate 1 of the overhead guard. The lower end surfaces of the first bent vertical plate 5 and the second bent vertical plate 6 are both fixed to the lower frame. A hollow cavity is formed between the first bent vertical plate 5 and the second bent vertical plate 6. Both ends of the first plate 8 and the second plate 9 are fixed to the main roller vertical plates 7 on both sides. The main roller vertical plate 7 is fixed to the second bent vertical plate 6. The first plate 8 and the lower side roller vertical plate 10 are arranged in parallel and are fixedly connected through the second plate 9. Side rollers are arranged on the first plate 8 and the lower side roller vertical plate 10 through roller axles. The main roller is installed on the surface of the main roller vertical plate 7 through a roller axle head. It can be connected to the gantry through the roller axle head and its frame; the lower frame includes a standing plate 11, a chassis plate 12, a chassis lower bent plate 13, a chassis component plate, a front connecting bent plate 16, and a third plate 17. Two groups of the chassis plate 12 and the chassis lower bent plate 13 are symmetrically distributed on both sides of the middle frame. The chassis component plate is fixed to the main roller vertical plates 7 on both sides. The upper surface of the main roller vertical plate 7 is fixed to the lower surface of the standing plate 11. The side surface of the main roller vertical plate 7 is fixed to one end of the chassis plate 12. Both side surfaces of the chassis lower bent plate 13 are respectively fixed to the lower surface and the side surface of the main roller vertical plate 7. The front connecting bent plate 16 is fixed to the chassis plate 12, the third plate 17, the main roller vertical plate 7, and the chassis component plate. The third plate 17 seals the inner cavity of the lower frame formed by enclosing the standing plate 11, the chassis plate 12, the chassis lower bent plate 13, the chassis component plate, and the front connecting bent plate 16.The cantilever frame includes the top guard side plate 22, the second rectangular tube 23, the fourth plate 24, the first round steel 25, and the fifth plate 26. Two sets of the top guard side plates 22, the second rectangular tube 23, and the fourth plate 24 are symmetrically distributed on both sides of the round steel 24. Both ends of the second rectangular tube 23, the fourth plate 24, the first round steel 25, and the fifth plate 26 are respectively fixedly connected to the first rectangular tube 2 and the fifth plate 26. The first round steel 25 and the second rectangular tube 23 have high load-bearing capacity and high structural strength in the structure.

[0019] Further, the chassis assembly plate includes the chassis main connecting bent plate 14 and the chassis middle connecting bent plate 15. The chassis main connecting bent plates 14 are symmetrically fixed on both sides of the chassis middle connecting bent plate 15. One side surface of the chassis main connecting bent plate 14 is fixed to the main roller vertical plate 7, and the other side surface of the chassis main connecting bent plate 14 is fixed to the lower plate surface of the standing plate 11. Setting the chassis assembly plate and the standing plate 11 as a multi-cavity structure can increase the plate surface support and improve the strength. At the same time, the multi-cavities can be used for cable passing.

[0020] Further, it further includes a display screen bracket 19 connected to the upper end of the front glass mounting plate 18.

[0021] Further, it further includes an instrument panel wire-passing bent plate 20. The instrument panel wire-passing bent plate 20 is fixed to the front glass mounting plate 18, and an instrument panel chassis 21 is fixed to the top end of the instrument panel wire-passing bent plate 20.

[0022] The fifth plate 26 and the third plate 17 are respectively arranged in front of the top guard and in front of the lead glass mounting plate, and are both used for connecting the guide rails. When the load is large, the fifth plate 26 and the third plate 17 are longitudinally stressed, greatly improving the structural strength.

[0023] Further, it further includes a guard rail connecting plate 27 and a storage rack 28. The side plate of the guard rail connecting plate 27 is fixed to the first bent vertical plate 5 or the second bent vertical plate 6, the lower end surface of the guard rail connecting plate 27 is fixed to the standing plate 11, and the storage rack 28 is fixed to the first bent vertical plate 5 or / and the second bent vertical plate 6 and the guard rail connecting plate 27.

[0024] Further, it further includes a seat component connecting plate 29 and a front glass mounting plate 18; the seat component connecting plate 29 is fixed to the standing plate 11 through a wire rope encoder mounting plate 30 and a second round steel 31.

[0025] Further, it further includes a diagonal tension bar 32. Both ends of the diagonal tension bar 32 are respectively fixedly connected to the second rectangular tube 23 and the first bent vertical plate 5.

[0026] Optionally, a hanging chain plate 71 is arranged on the plate surface of the main roller vertical plate 7.

[0027] Optionally, both side plates of the front glass mounting plate 18 are fixed to the chassis plate 12, and the lower end plate is fixed to the third plate 17.

[0028] Optionally, a lamp mounting plate 33 is provided at the front end of the top fan mounting plate 3.

[0029] The above fixing methods can be connection methods in the prior art such as welding, screw fixing, snap fixing, etc.

[0030] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A welded structure of the cab frame of a three-way stacker forklift for upward movement of people, characterized in that: It includes an upper frame, a middle frame, a lower frame, and a cantilever frame. The upper frame is fixed to the middle frame, the middle frame is fixed to the lower frame, and the cantilever frame is fixed to the upper frame; At least one of the upper frame, the middle frame, the lower frame, and the cantilever frame is a hollow cavity part; The upper frame includes a rear sealing plate of the roof guard, a first rectangular tube, a rear glass mounting plate, and a top fan mounting plate. The front end of the rear sealing plate is fixed to the first rectangular tube, and the rear end is fixed to the rear glass mounting plate. The rear sealing plate of the roof guard, the first rectangular tube, and the rear glass mounting plate are all fixed to the middle frame; The middle frame includes a first bent vertical plate, a second bent vertical plate, a main roller vertical plate, a first plate, a second plate, and a lower side roller vertical plate. Two sets of the first bent vertical plate, the second bent vertical plate, and the main roller vertical plate are symmetrically arranged on both sides of the upper frame. There is a space between the first bent vertical plate and the second bent vertical plate, and they are respectively arranged inside and outside. The upper end of the first bent vertical plate is fixed to both side plates of the top fan mounting plate. The second bent vertical plate is fixed to both side plates of the rear sealing plate of the roof guard. The lower end surfaces of the first bent vertical plate and the second bent vertical plate are both fixed to the lower frame. A hollow cavity is formed between the first bent vertical plate and the second bent vertical plate. Both ends of the first plate and the second plate are fixed to the main roller vertical plates on both sides. The main roller vertical plate is fixed to the second bent vertical plate. The first plate and the lower side roller vertical plate are arranged in parallel and are fixedly connected by the second plate. The first plate and the lower side roller vertical plate are both provided with side rollers through roller axles. The plate surface of the main roller vertical plate is provided with main rollers through roller axles.

2. The welded structure of the cab frame of a three-way stacker forklift for upward movement of people as described in claim 1, wherein: The top fan mounting plate is placed at a certain distance below the rear sealing plate of the roof guard, and the top fan mounting plate is fixed to the lower plate surface of the first rectangular tube; the rear sealing plate of the roof guard is fixed to the upper plate surface of the first rectangular tube. The top fan mounting plate is fixed to the middle frame and the rear glass mounting plate, and a hollow cavity is formed between the top fan mounting plate and the rear glass mounting plate.

3. The welded structure of the cab frame of a three-way stacker forklift for upward movement of people as described in claim 2, characterized in that: The lower frame includes a standing plate, a chassis plate, a chassis lower bent plate, a chassis component plate, a front connecting bent plate, and a third plate. Two sets of chassis plates and chassis lower bent plates are symmetrically distributed on both sides of the middle frame. The chassis component plate is fixed to the main roller vertical plates on both sides. The upper plate surface of the main roller vertical plate is fixed to the lower plate surface of the standing plate. The side plate surface of the main roller vertical plate is fixed to one end of the chassis plate. Both side surfaces of the chassis lower bent plate are respectively fixed to the lower plate surface and the side plate surface of the main roller vertical plate. The front connecting bent plate is fixed to the chassis plate, the third plate, the main roller vertical plate, and the chassis component plate. The third plate seals the inner cavity of the lower frame formed by enclosing the standing plate, the chassis plate, the chassis lower bent plate, the chassis component plate, and the front connecting bent plate.

4. The welded structure of the cab frame of a three-way stacker forklift for upward movement of people according to claim 3, wherein: The chassis component plate includes a chassis main connecting bent plate and a chassis middle connecting bent plate. The chassis middle connecting bent plate is symmetrically fixed with the chassis main connecting bent plates on both sides. One side surface of the chassis main connecting bent plate is fixed to the main roller vertical plate, and the other side surface is fixed to the lower plate surface of the standing plate.

5. The welded structure of the cab frame of a three-way stacker forklift for upward movement of a person as described in claim 3, characterized in that: It further includes a front glass mounting plate and an instrument panel wire threading bending plate. The two side plates of the front glass mounting plate are fixed to the chassis plate, and the lower end plate is fixed to the third plate. A display screen bracket is connected to the upper end of the front glass mounting plate. The instrument panel wire threading bending plate is fixed to the front glass mounting plate, and an instrument panel chassis is fixed to the top end of the instrument panel wire threading bending plate.

6. The welded structure of the cab frame of a three-way stacker forklift for upward movement of people as described in claim 1, characterized in that: The cantilever frame includes a roof guard side plate, a second rectangular tube, a fourth plate, a first round steel, and a fifth plate. Two sets of roof guard side plates, second rectangular tubes, and fourth plates are symmetrically distributed on both sides of the round steel. Both ends of the second rectangular tube, fourth plate, first round steel, and fifth plate are respectively fixed to the first rectangular tube and the fifth plate.

7. The welded structure of the cab frame of a three-way stacker forklift for human upward travel as described in claim 3, characterized in that: It further includes a guardrail connecting plate and a storage rack. The side plate of the guardrail connecting plate is fixed to the first bending vertical plate or the second bending vertical plate. The lower end surface of the guardrail connecting plate is fixed to the standing plate. The storage rack is fixed to the first bending vertical plate, the second bending vertical plate, and the guardrail connecting plate.

8. The welded structure of the cab frame of a three-way stacker forklift for upward movement of people according to claim 2, wherein: It further includes a seat component connecting plate and a diagonal stay. The seat component connecting plate is fixed to the lower frame through a wire rope encoder mounting plate and a second round steel. A hanging chain plate is arranged on the surface of the main roller vertical plate. A lamp mounting plate is arranged at the front end of the top fan mounting plate.

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