A kind of engineering vehicle cab and welding method thereof

Abstract

The present invention discloses a cab of an engineering vehicle and a welding method thereof, which belongs to the technical field of engineering vehicles, solves the problems of poor protection, poor buffering of falling objects and poor functionality in the prior art, and comprises a cab main body, the cab main body is arranged on a base, a falling object prevention mechanism is arranged on the top of the cab main body, the falling object prevention mechanism comprises a baffle and an annular support seat, the baffle is arranged on the support seat and connected to the support seat through an elastic strip, and a corrugated plate is also arranged between the top of the cab main body and the bottom of the baffle. In the present invention, when the impact of falling objects is small, the baffle is caused to shake as a whole through the deformation of the spring and the elastic strip, thereby achieving buffering of falling objects, and when the impact of falling objects is large, two adjacent damping plates are caused to tilt, which is convenient for removing falling objects, and further improves the protective effect of the cab main body.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering vehicles, and in particular, relates to an engineering vehicle cab and a welding method thereof. Background Art

[0002] In engineering vehicles, drivers operate the central control device in the cab to achieve different operation purposes. The use scenarios of engineering vehicles are relatively complex, and there may be risks of falling objects from high altitudes and damaging the vehicle cab. In order to ensure the safety of the operator, an anti-fall net is generally installed on the top of the cab to intercept falling objects from high altitudes. However, the structure of the anti-fall net is too simple, which will still cause a large deformation of the top of the cab. Falling objects can even invade the interior of the cab, and the overall protection performance is poor. Summary of the invention

[0003] The purpose of the present invention is to provide an engineering vehicle cab and a welding method thereof which has good protection, can buffer falling objects and has good functionality, in view of the deficiencies in the prior art.

[0004] In order to achieve the above technical objectives, the technical solutions adopted by the engineering vehicle cab and the welding method thereof of the present invention are as follows:

[0005] A cab for an engineering vehicle, comprising a cab body, the cab body being arranged on a base, a falling object prevention mechanism being arranged on the top of the cab body, the falling object prevention mechanism comprising a baffle and an annular support seat, the baffle being mounted on the support seat and connected to the support seat through an elastic strip;

[0006] A corrugated plate is also provided between the top of the cab body and the bottom of the baffle, one side of the corrugated plate is connected to the cab body and provided with a first notch opening downward, and a buffer distance is provided between one side of the corrugated plate and the bottom of the baffle and provided with a second notch opening upward. When the corrugated plate is impacted, the first notch and the second notch will deform, thereby gradually reducing the height of the corrugated plate, and the corrugated plate is made of a metal material with good toughness, so that the corrugated plate can have a certain elasticity when deformed under pressure, thereby playing a further buffering and shock absorbing role.

[0007] Preferably, the baffle includes a plurality of damping plates arranged at intervals, adjacent damping plates are connected to each other by welding to form welds, a plurality of springs are arranged below the plurality of welds, one side of the spring is arranged in the second notch, the other side of the spring supports two adjacent damping plates, and the stiffness coefficients of the plurality of springs gradually decrease from the front of the cab body to the rear of the cab body. Since the damping plates are arranged at intervals, the structure of the weld is in a state that is easier to be damaged, that is, when the impact energy of the falling object is large, the weld will be damaged, thereby enabling the two adjacent damping plates to tilt and rotate, so that the falling object can roll away from the damping plate.

[0008] Preferably, the bottom of the shock-absorbing plate is also provided with a plurality of flexible sheets extending along the length direction of the weld, the top two sides of the flexible sheets are respectively and one-to-one fixedly connected to the bottoms of two adjacent shock-absorbing plates, and the other side of the spring supports the flexible sheets.

[0009] Preferably, the bottom of the weld and the top of the flexible sheet are in contact with each other and can be separated from each other.

[0010] Preferably, there is a sway margin between the support seat and the shock-absorbing plate, that is, the support column and the shock-absorbing plate are not in contact, and the shock-absorbing plate can tilt or rotate to a certain extent.

[0011] Preferably, an annular slot is provided on the top of the support seat, a burr is provided on the top of the elastic strip, the pressure cover is on the bottom of the shock absorbing plate, and the elastic strip passes through the shock absorbing plate and is inserted into the slot.

[0012] Preferably, the burr is locked on the top of the damping plate by bolts, one end of the elastic strip is integrally formed with the burr, and the other end of the elastic strip is provided with a limiting rod;

[0013] Both ends of the limit rod extend in the horizontal direction and extend to the outside of the slot, and both ends of the limit rod are provided with limit plates, which are used to prevent the limit rod from being separated from the slot. The limit plates can prevent the limit rod from being swayed in the horizontal direction during the shaking of the elastic strip, causing the limit rod to be separated from the slot, thus ensuring that the limit rod has a reliable locking effect on the elastic strip.

[0014] A welding method for an engineering vehicle cab comprises the following steps:

[0015] S1. Place the support seat on the top of the cab body so that the support seat and the cab body are coaxially arranged;

[0016] S2. Spot welding is used to position the inner side of the support seat and the cab body, and laser welding is used to weld the outer side of the support seat and the cab body;

[0017] S3, laser welding is performed between the entire inner periphery of the support seat and the cab body and the spot welding points in step S1 are covered;

[0018] S4. Place the corrugated sheet on the inner side of the support seat, and perform laser welding on the outer side of the corrugated sheet around the entire periphery to achieve fixation between the corrugated sheet and the cab body;

[0019] S5. Place a plurality of damping plates on the support seat at intervals, and weld two adjacent damping plates by hot-melt welding to form a weld, and the welding is completed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, when the impact of a falling object is small, the spring and the elastic strip are deformed to cause the baffle to shake as a whole, thereby achieving buffering of the falling object.

[0022] 2. In the present invention, when the impact of falling objects is large, the impact of the falling objects will destroy the weld, causing the two adjacent shock-absorbing plates to separate and tilt under the support of the spring, making it easier for the falling objects to roll away from the top of the cab body along the slope after falling, further improving the protection effect of the cab body.

[0023] 3. The present invention reliably limits the elastic strip through the slot, the limiting rod and the burr, so that the elastic strip can always be inserted in the slot and can generate a certain amount of shaking to prevent the elastic strip from breaking under the action of the shock-absorbing plate.

[0024] 4. The present invention adopts different welding processes to weld the support seat, corrugated plate and several shock-absorbing plates in sequence, so as to realize the reliable installation of the anti-falling object mechanism on the top of the cab body, thereby realizing the protection of the top of the cab body and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the falling object prevention mechanism in the present invention;

[0027] Figure 3 yes Figure 2 Action state reference diagram;

[0028] Figure 4 It is a structural schematic diagram of the baffle in the present invention;

[0029] Figure 5 It is a schematic diagram of the connection structure of the support seat, the elastic strip and the shock absorbing plate in the present invention.

[0030] In the figure: 1. cab body; 2. base; 3. anti-falling object mechanism; 31. support seat; 310. slot; 32. elastic strip; 321. flash; 322. bolt; 323. limit rod; 324. limit plate; 33. corrugated board; 331. first notch; 332. second notch; 34. shock absorbing plate; 340. weld; 35. spring; 36. flexible sheet. DETAILED DESCRIPTION

[0031] The invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0032] like Figure 1 — Figure 5 As shown, a cab of an engineering vehicle comprises a cab body 1, wherein the cab body 1 is arranged on a base 2, and a falling object prevention mechanism 3 is arranged on the top of the cab body 1, wherein the falling object prevention mechanism 3 comprises a baffle and an annular support seat 31, wherein the baffle is mounted on the support seat 31 and connected to the support seat 31 through an elastic strip 32;

[0033] A corrugated plate 33 is also provided between the top of the cab body 1 and the bottom of the baffle. One side of the corrugated plate 33 is connected to the cab body 1 and is provided with a first notch 331 opening downward. There is a buffer distance between one side of the corrugated plate 33 and the bottom of the baffle and a second notch 332 opening upward. The support seat 31 is made of a hard material. After the baffle is connected through the elastic strip 32, the baffle can be made flexible as a whole. In this way, when the falling object hits the baffle, the baffle can be deformed and shaken to a certain extent, which is used to buffer the impact of the falling object and effectively prevent the falling object from invading the interior of the cab body 1. Further, the corrugated plate 33 is provided below the baffle, so that when the deformation of the baffle is large and the buffer distance is exhausted, the corrugated plate 33 can reliably support the baffle. Since the threshold value of the deformation of the corrugated plate 33 is greater than the threshold value of the deformation of the elastic strip 32, the baffle can slowly stop through the support and deformation of the corrugated plate 33 after contacting the corrugated plate 33, thereby improving the protective performance of the baffle on the cab body 1.

[0034] The baffle includes a plurality of damping plates 34 arranged at intervals, and adjacent damping plates 34 are connected to each other by welding to form welds 340, and a plurality of springs 35 are respectively arranged under the plurality of welds 340;

[0035] One side of the spring 35 is disposed in the second notch 332 , and the other side of the spring 35 supports two adjacent damping plates 34 . The baffle is welded from multiple shock-absorbing plates 34. When the impact of falling objects is small, the deformation of the spring 35 and the elastic strip 32 causes the baffle to shake as a whole, thereby achieving buffering of the falling objects. When the impact of the falling objects is large, the impact of the falling objects will destroy the weld 340, causing the two adjacent shock-absorbing plates 34 to separate. At the same time, since the stiffness coefficient of the spring 35 gradually decreases from the front of the cab body 1 to the rear of the cab body 1, the baffle is eventually arched above the spring 35 located closest to the front of the cab body 1. In other words, after the weld 340 breaks, the baffle is in the shape of a slope as a whole, which makes it easier for falling objects to roll away from the top of the cab body 1 along the slope after falling, thereby avoiding damage to the top of the cab body 1 caused by the accumulation of too many falling objects. Moreover, after the shock-absorbing plate 34 tilts, part of the vertical impact force of the falling objects is removed, further improving the protection effect on the cab body 1.

[0036] The bottom of the damping plate 34 is also provided with a plurality of flexible sheets 36 extending along the length direction of the weld 340, and the top two sides of the flexible sheets 36 are respectively and one-to-one fixedly connected to the bottoms of two adjacent damping plates 34, and the other side of the spring 35 supports the flexible sheets 36. The flexible sheets 36 can also be deformed to connect the damping plates 34 and the springs 35, so as to prevent the plurality of damping plates 34 from collapsing after being impacted.

[0037] The bottom of the weld 340 and the top of the flexible sheet 36 are in contact with each other and can be separated from each other. In this way, the force of the weld 340 on the flexible sheet 36 when it breaks can be reduced, ensuring that the flexible sheet 36 can be reliably connected to the damping plate 34 and the spring 35.

[0038] There is a sway margin between the support seat 31 and the shock absorbing plate 34. That is, the top of the support seat 31 is not in contact with the bottom of the shock absorbing plate 34, so that the shock absorbing plate 34 can be tilted or shaken to buffer the impact caused by falling objects.

[0039] The top of the support seat 31 is provided with an annular slot 310, the top of the elastic strip 32 is provided with a burr 321, the gland is at the bottom of the shock absorbing plate 34, and the elastic strip 32 passes through the shock absorbing plate 34 and is inserted into the slot 310. The slot 310 and the burr 321 cooperate to ensure that the elastic strip 32 is in a stable connection with the support seat 31 and the shock absorbing plate 34, and prevent the shock absorbing plate 34 from being separated from the elastic body during the shaking of the shock absorbing plate 34, resulting in the exposure of the top of the cab body 1, thereby ensuring the safety of the operator.

[0040] The flash edge 321 is locked on the top of the shock absorbing plate 34 by a bolt 322, one end of the elastic strip 32 is integrally formed with the flash edge 321, and the other end of the elastic strip 32 is provided with a limiting rod 323;

[0041] Both ends of the limiting rod 323 extend in the horizontal direction and extend to the outside of the slot 310. Both ends of the limiting rod 323 are also provided with limiting plates 324, which are used to prevent the limiting rod 323 from escaping from the slot 310. The other ends of the support seat 31 and the elastic strip 32 are provided with a through hole for the limiting rod 323 to pass through, and the inner diameter of the through hole is larger than the outer diameter of the limiting rod 323. In this way, under the obstruction of the limiting plate 324, the elastic strip 32 can always be inserted into the slot 310, and a certain amount of shaking can be generated to prevent the elastic strip 32 from breaking under the action of the shock absorbing plate 34.

[0042] A welding method for an engineering vehicle cab comprises the following steps:

[0043] S1. Place the support seat 31 on the top of the cab body 1 so that the support seat 31 and the cab body 1 are coaxially arranged;

[0044] S2, the inner side of the support seat 31 and the cab body 1 are positioned by spot welding, and the outer side of the support seat 31 and the cab body 1 are welded by laser welding;

[0045] S3, laser welding is performed between the entire inner periphery of the support seat 31 and the cab body 1 to cover the spot welding points in step S1;

[0046] S4, placing the corrugated plate 33 on the inner side of the support seat 31, and laser welding the outer side of the corrugated plate 33 around the entire periphery to achieve fixation between the corrugated plate 33 and the cab body 1;

[0047] S5. Place a plurality of damping plates 34 on the support seat 31 at intervals, and weld two adjacent damping plates 34 by hot-melt welding to form a weld 340. The welding is completed.

[0048] After the support seat 31, the corrugated plate 33 and the plurality of shock-absorbing plates 34 are reliably welded through the above steps, the anti-falling object mechanism 3 can be reliably installed on the top of the cab body 1, and through the deformation of the elastic strip 32, the compression and rebound of the spring 35, and the inclination and shaking of the shock-absorbing plate 34, the shielding, buffering and clearing of falling objects are achieved, effectively preventing falling objects from invading the cab body 1, thereby ensuring the safety of people in the cab body 1.

[0049] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications in the shape, structure, characteristics and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A cab for an engineering vehicle, comprising a cab body, wherein the cab body is arranged on a base, and a falling object prevention mechanism is arranged on the top of the cab body, characterized in that: The anti-falling object mechanism comprises a baffle and an annular support seat, wherein the baffle is mounted on the support seat and connected to the support seat via an elastic strip; A corrugated plate is also provided between the top of the cab body and the bottom of the baffle, one side of the corrugated plate is connected to the cab body and provided with a first notch opening downward, and a buffer distance is provided between one side of the corrugated plate and the bottom of the baffle and provided with a second notch opening upward; The baffle includes a plurality of damping plates arranged at intervals, adjacent damping plates are connected to each other by welding to form welds, a plurality of springs are respectively arranged below the plurality of welds, one side of the spring is arranged in the second notch, and the other side of the spring supports two adjacent damping plates, and the stiffness coefficients of the plurality of springs gradually decrease from the front of the cab body to the rear of the cab body; The bottom of the damping plate is also provided with a plurality of flexible sheets extending along the length direction of the weld, the top two sides of the flexible sheets are respectively and one-to-one fixedly connected to the bottoms of two adjacent damping plates, and the other side of the spring supports the flexible sheets; The bottom of the weld and the top of the flexible sheet are in contact with each other and can be separated from each other; There is a sway margin between the support seat and the shock absorbing plate; The welding method of the engineering vehicle cab comprises the following steps: S1. Place the support seat on the top of the cab body so that the support seat and the cab body are coaxially arranged; S2. Spot welding is used to position the inner side of the support seat and the cab body, and laser welding is used to weld the outer side of the support seat and the cab body; S3, laser welding is performed between the entire inner periphery of the support seat and the cab body and the spot welding points in step S1 are covered; S4. Place the corrugated sheet on the inner side of the support seat, and perform laser welding on the outer side of the corrugated sheet around the entire periphery to achieve fixation between the corrugated sheet and the cab body; S5. Place a plurality of damping plates on the support seat at intervals, and weld two adjacent damping plates by hot-melt welding to form a weld, and the welding is completed.

2. The engineering vehicle cab according to claim 1, characterized in that: The top of the support seat is provided with an annular slot, the top of the elastic strip is provided with a burr, and the elastic strip passes through the shock-absorbing plate and is inserted into the slot.

3. The engineering vehicle cab according to claim 2, characterized in that: The flash is locked on the top of the damping plate by bolts, one end of the elastic strip is integrally formed with the flash, and the other end of the elastic strip is provided with a limit rod; Both ends of the limiting rod extend in the horizontal direction and extend to the outside of the slot. Both ends of the limiting rod are also provided with limiting plates, which are used to prevent the limiting rod from escaping from the slot.

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