TWM447848U - Lifting structure with positioning structure for vehicle - Google Patents

Description

Lifting mechanism for positioning effect of a vehicle

The present invention relates to a lifting mechanism for a vehicle, and more particularly to a lifting mechanism installed on a chassis of a truck and located at a rear end surface of the vehicle. The lifting mechanism is used for lifting or lowering of articles carried during loading or unloading of trucks.

Some small and medium-sized trucks that are generally used to carry goods will have a lifting mechanism with a platform at the rear of the vehicle. The hydraulic cylinder and the connecting rod control platform will rise or fall. This can be used to load the cargo on the bucket. Easily unload, or easily lift the cargo up to about the height of the bucket, making it easier to load the cargo into the bucket.

The platform of the conventional lifting mechanism is folded uprightly on the end face of the body when not in use. When the lifting mechanism is to load and unload the cargo, the platform is adjusted to be in a state of being flat with the ground, such as controlling oil pressure. The extension or shortening of the telescopic rod of the cylinder formed by the cylinder can control the height of the platform from the ground, and generally the platform is raised to the highest height and needs to be aligned with the surface of the vehicle body, so when carrying goods, The handling operation is not smooth due to the difference between the surface of the platform and the surface of the body. The traditional lifting mechanism platform should be adjusted to be about the same as the bucket, which is usually judged by the naked eye of the operator. Therefore, it often happens that the platform has already abutted against the rear end of the bucket, but the operator still controls the telescopic rod of the actuator to continue to retract. Although the telescopic rod cannot continue to retract at this time, the operator's wrong control will cause the actuator to withstand a large pressure, and the cylinder is relatively easy to be damaged. Further, since the cylinder is driven by the motor, the motor is easily damaged when the cylinder is not operated and the motor continues to operate.

To solve this problem, the present invention provides a main rod including two webs formed at the end, the main rod further including a first pivot portion, two second pivot portions, and two third pivot portions formed on the outer peripheral surface , the main link of the main board is to be used with A vehicle chassis is fixedly connected, and a cylinder is pivotally connected to the main rod. The cylinder includes a cylinder body. The cylinder body includes a pivot end and an end surface. The cylinder further includes a telescopic rod that is slidably sleeved with the cylinder body. The telescopic rod has an end, and the pivoting end of the cylinder of the cylinder is pivotally connected with the first pivot of the main rod, so that the cylinder can be pivoted relative to the main rod, and the telescopic rod of the cylinder can be in the first position and the second position. Displacement between the position and the third position. When the telescopic rod is in the first position, the distance between the end and the end surface of the cylinder body is greater than when the telescopic rod is in the second position and the third position, and the end of the telescopic rod is in the second position. When the distance between the end faces of the body is greater than that of the third position, the two first links each include an end pivotally connected to the second pivot of the main pole, and an intermediate rod is fixed between the two first links. The intermediate rod further includes a pivoting portion formed on the outer peripheral surface, the end of the telescopic rod of the working cylinder is pivotally connected with the pivoting portion of the intermediate rod, and a platform is pivotally connected to the other end of the two first links, and the second connection Rods each including one end pivotally connected to a third pivot of the main pole, each The connecting rod further includes another end pivotally connected to the platform, a switch fixed at an end of the telescopic rod of the working cylinder, the switch comprising a pressing rod that can be pressed, the pressing rod is displaced between the pressing position and the releasing position, When the pressure bar is in the pressing position, the switch forms an open state. When the pressure bar is in the release position, the switch forms a path state, and a control box includes a controller electrically connected to the switch, and the controller of the control box is operated. The telescopic rod of the cylinder is displaced between the first, second and third positions.

When the telescopic rod of the moving cylinder is in the first position, the pressing rod of the switch is separated from the end surface of the cylinder of the working cylinder, so that the controller can freely control the displacement of the telescopic rod of the working cylinder, and the platform is laid flat on the ground at this time.

When the cylinder is in the second position, the pressing rod of the switch is separated by the end surface of the cylinder of the cylinder, and the platform is to be used to cover a rear end surface of a vehicle body provided on the vehicle chassis. , causing the platform to be collapsed.

When the cylinder is in the third position, the pressing rod of the switch is pressed against the end surface of the cylinder of the cylinder, causing the switch to form an open state, and the platform is flush with the surface of the bucket, and the controller cannot further control the cylinder. The telescopic rod is retracted.

The lifting mechanism of the present invention can achieve precise control of the displacement of the platform to the position where the upper surface is exactly aligned with the surface of the bucket, and avoid the end face of the platform. After the end face of the pressing bucket, the pressure of the working cylinder is too large and the damage is easy to be damaged. Therefore, the working cylinder of the lifting mechanism of the present invention has a long service life.

All of the following drawings are merely illustrative of the basic teachings of the present invention, and the extension of the number, position, relationship, and size of the components constituting the preferred embodiment will be explained in the drawings. Post-guided changes are implemented in industry skills. In addition, changes in the exact dimensions and size ratios associated with specific strengths, weights, strengths, and similar requirements are also within the skill of the industry after reading and understanding the teachings of this creation.

In the different figures, the same reference numerals are used to designate the same or similar elements; in addition, please refer to the text such as "first", "second", "third", "upper", "lower", "before", "after" "," "inside", "outside", "end", "part", "segment", "horizontal", "vertical", "inward", "outward", "twist", "length"," The "area", "around", "side", "radial", "axial", and the like, are merely for ease of use in the drawings and are merely used to help describe the present invention.

According to the drawings, the lifting mechanism 12 of the present invention is mounted on a vehicle 10. The vehicle 10 has a vehicle chassis 11 on which an open body 13 is fixed, and the body 13 includes an open shape. The rear end surface 15 is fixed with a control box 50 on one side of the vehicle 10. The control box 50 is internally provided with a driving device (not shown) for providing the power required for the lifting mechanism 12 to move. The control box 50 utilizes a controller. 52 controls the drive to actuate.

The lift mechanism 12 of the present invention includes a main rod 20 including two webs 22 formed at the ends, and the main rod 20 further includes a first pivot portion 24 and two second pivot portions 26 formed on the outer peripheral surface. The second pivot portion 28 is located between the two second pivot portions 26 , and each of the second pivot portions 26 is located between the first pivot portion 24 and the adjacent third pivot portion 28 . The web 22 of the main rod 20 is welded and fixed to the beam of the undercarriage 11 of the vehicle 10, so that the main rod 20 is located between the undercarriage 11 and the ground.

According to the drawings, the lifting mechanism 12 of the present invention further includes an operating cylinder 30, such as a hydraulic cylinder and a pneumatic cylinder, and pivotally connected to the main rod 20. The cylinder 30 includes a cylinder 32, and the cylinder 32 includes A pivoting end 34 and an end face 36, the actuating cylinder 30 further includes a telescopic rod 38 slidably engaged with the cylinder block 32. The telescopic rod 38 has an end 40. The pivoting end 34 of the cylinder 32 of the cylinder 30 is pivotally coupled to the first pivot 24 of the main rod 20, causing the cylinder 30 to pivot relative to the main rod 20, and the telescopic rod 38 of the cylinder 30 can be in the first position ( Displacement between the second position (as shown in the second figure) and the third position (as shown in the fourth figure), the telescopic rod 38 is in the first position (as shown in the first figure) The distance between the end 40 and the end surface 36 of the cylinder 32 is greater than when the telescopic rod 38 is in the second position (as shown in the second figure) and the third position (as shown in the fourth figure), and the telescopic rod 38 is located at the In the two positions (as shown in the second figure), the end 40 is spaced from the end face 36 of the cylinder 32 by a greater distance than in the third position (as shown in the fourth figure).

According to the drawings, the lift mechanism 12 of the present invention further includes two first links 42, each of the first links 42 includes one end pivotally connected to the second pivot portion 26 of the main rod 20, and an intermediate rod 44 is fixed at Between the two first links 42, the intermediate rod 44 further includes a pivoting portion 45 formed on the outer peripheral surface. The distal end 40 of the telescopic rod 38 of the cylinder 30 is pivotally coupled to the pivoting portion 45 of the intermediate rod 44.

According to the drawings, the lifting mechanism 12 of the present invention further includes a platform 48. The platform 48 is pivotally coupled to the other end of the two first links 42, causing the platform 48 to pivot relative to each of the first links 42.

According to the drawings, the lifting mechanism 12 of the present invention further includes two second links 46. Each of the second links 46 includes one end pivotally connected to the third pivot portion 28 of the main rod 20, and each of the second links 46 further includes another end pivotally connected to the platform 48, such that the platform 48 is movable relative to each of the second links 46 pivots.

According to the drawing, the lifting mechanism 12 of the present invention comprises a bracket 53 and a switch 54. The switch 54 is fixed on the bracket 53. The switch 54 is electrically connected between the negative lines of the power supply system of the lifting mechanism 12. The bracket 53 is fixed to the end 40 of the telescopic rod 38 of the cylinder 30, and the bracket 53 The upper portion has a long groove, so that the bracket 53 is locked to the end 40 of the cylinder 30 but the nut is loosened, the position of the bracket 53 and the switch 54 can be adjusted, and the switch 54 includes a pressing rod 56 that can be pressed, The rod 56 is displaced between the pressing position and the releasing position. When the pressing rod 56 is in the pressing position, the switch 54 forms an open state, causing the circuit of the power supply system of the lifting mechanism 12 to form an open circuit, when the pressing rod 56 is in the releasing position, The switch 54 forms a passage state, causing a loop of the power supply system of the lift mechanism 12 to form a passage. The switch 54 is electrically connected to the controller 52. When the switch 54 forms a passage state, the controller 52 can freely control the extension or extension of the telescopic rod 38 of the cylinder 30. When the switch 54 forms an open state, the controller 52 is used to control the expansion and contraction. The shortened button of the lever 38 cannot control the telescopic rod 38 to continue to retract.

For convenience of explanation, it is assumed that the platform 48 of the proposed lifting mechanism 12 is in a state of being placed on the ground, at which time the telescopic rod 38 is in the first position (as shown in the first figure), the pressing rod 56 of the switch 54 and the actuating cylinder The end faces 36 of the cylinders 32 of 30 are spaced apart to cause the controller 52 to freely control the extension or displacement of the telescoping rod 38 of the cylinder 30.

When the platform 48 is to be folded (as shown in the second figure), the telescopic rod 38 of the actuating cylinder 30 is controlled to be displaced from the first position to the second position, and the cylinder of the telescopic rod 38 is partially retracted into the cylinder of the cylinder 30. In the body 32, the first and second links 42, 46 thus cause the platform 48 to be displaced upwardly, and after the platform 48 is displaced into position, a block (not shown) on the operating platform 48 is associated with the vehicle 10. The other upper block 58 abuts, so that the platform 48 is pulled upward by the traction of each second link 46, and the telescopic rod 38 of the moving cylinder 30 is located at the second position (as shown in the third figure), the platform 48 The upper surface abuts against the rear end face 15 of the body 13, thereby forming a collapsed state (as shown in the second figure).

When the platform 48 is to be raised to the upper surface and is flush with the surface of the body 13 , the telescopic rod 38 of the cylinder 30 is controlled from the first position to the third position by the platform 48 shown in the first figure on the ground (eg, 4 and 5) Displacement, as the telescopic rod 38 is shortened, the platform 48 is pulled by the first and second connecting rods 42, 46 and thus rises horizontally, and the telescopic rod 38 as the moving cylinder 30 is located. After the third position, the platform 48 is raised to a position where the upper surface is aligned with the surface of the body 13 (as shown in the fourth figure). This process is not due to the block of the operating platform 48 (not shown) and the block 58 Therefore, when the telescopic rod 38 passes the second position, the platform 48 does not reverse, causing the platform 48 to be smoothly displaced to a position where the upper surface is aligned with the surface of the body 13 and further displaced as the telescopic rod 38 of the moving cylinder 30. After the third position (as shown in the fourth figure), the pressing rod 56 of the switch 54 is just pressed against the end surface 36 of the cylinder 32, causing the switch 54 to switch to the open state, at which time the controller 52 continues to be pressed even if the operation is continued. The telescopic rod 38 of the control cylinder 30 is retracted, and the cylinder 30 is still stopped, so that the platform 48 just stops at the upper surface and is flush with the surface of the body 13, and the end surface of the platform 48 and the rear end surface of the body 13 The gap between the 15 is very small.

The lifting mechanism 12 of the present invention can achieve the position of the precision control platform 48 displaced to the upper surface just in line with the surface of the body 13 by the switch 54, and avoiding the end face 15 of the platform 48 pressing the body 13 to cause the pressure of the cylinder 30 The problem of being too large and apt to damage is that the life of the actuator 30 of the lifting mechanism 12 of the present invention is long, and the cylinder 30 is driven by the motor, so that the motor 30 can be stopped and the motor is stopped, so that it can be made The motor that drives the cylinder 30 is not easily damaged. In addition, the switch 54 of the present invention is electrically connected between the negative line of the power supply system of the lifting mechanism 12, so that when the vehicle is hit during driving or other reasons, the switch 54 is detached, and no spark is generated due to the short circuit, thereby further causing a fire-burning vehicle. An accident happened.

The present invention disclosed in the specification is to be considered as illustrative and not restrictive. The scope of the present invention is defined by the scope of the appended claims, and is not intended to be limited by the scope of the invention.

10‧‧‧ Vehicles

11‧‧‧Car chassis

12‧‧‧ Lifting mechanism

13‧‧‧Cars

15‧‧‧ rear end face

20‧‧‧ main pole

22‧‧‧Link board

24‧‧‧ First pivot

26‧‧‧ Second pivot

28‧‧‧ Third pivot

30‧‧‧Acoustic cylinder

32‧‧‧ cylinder

34‧‧‧ pivot end

36‧‧‧ end face

38‧‧‧ Telescopic rod

40‧‧‧ end

42‧‧‧First Link

44‧‧‧Intermediate pole

45‧‧‧ pivotal department

46‧‧‧second link

48‧‧‧ platform

50‧‧‧Control box

52‧‧‧ Controller

53‧‧‧ bracket

54‧‧‧ switch

56‧‧‧Press

58‧‧‧ card block

The first figure is a three-dimensional combination diagram of the creation lifting mechanism, and shows that the platform is placed on the ground.

The second figure is a side view of the creation lifting mechanism and shows the state when the platform is folded.

The third figure is a partial enlarged view of the second figure.

The fourth figure is a side view of the creation lifting mechanism and shows the state when the platform is aligned with the surface of the body.

The fifth figure is a partial enlarged view of the fourth figure.

10‧‧‧ Vehicles

11‧‧‧Car chassis

12‧‧‧ Lifting mechanism

13‧‧‧Cars

15‧‧‧ rear end face

20‧‧‧ main pole

22‧‧‧Link board

24‧‧‧ First pivot

26‧‧‧ Second pivot

28‧‧‧ Third pivot

30‧‧‧Acoustic cylinder

32‧‧‧ cylinder

34‧‧‧ pivot end

36‧‧‧ end face

38‧‧‧ Telescopic rod

40‧‧‧ end

42‧‧‧First Link

44‧‧‧Intermediate pole

45‧‧‧ pivotal department

46‧‧‧second link

48‧‧‧ platform

50‧‧‧Control box

52‧‧‧ Controller

53‧‧‧ bracket

54‧‧‧ switch

56‧‧‧Press

58‧‧‧ card block

Claims (1)

A lifting mechanism having a positioning effect of a vehicle includes: a main rod (20) including two connecting plates (22) formed at an end, the main rod (20) further including a first portion formed on the outer peripheral surface a pivot portion (24), two second pivot portions (26), and two third pivot portions (28), the connecting plate (22) of the main rod (20) is to be used with a vehicle chassis of a vehicle (10) (11) fixed; a cylinder (30) pivotally connected to the main rod (20), the cylinder (30) includes a cylinder (32), the cylinder (32) includes a pivoting end (34) and a The end face (36), the actuating cylinder (30) further comprises a telescopic rod (38) slidingly sleeved with the cylinder body (32), the telescopic rod (38) having an end (40) and a cylinder of the actuating cylinder (30) ( The pivoting end (34) of 32) is pivotally connected with the first pivot portion (24) of the main rod (20), so that the working cylinder (30) can pivot relative to the main rod (20), and the telescopic rod of the working cylinder (30) (38) being displaceable between the first position, the second position and the third position, the distance between the end (40) and the end face (36) of the cylinder (32) being greater than the distance between the end of the telescopic rod (38) in the first position is greater than When the telescopic rod (38) is in the second position and the third position, and the end of the end (40) and the cylinder (32) when the telescopic rod (38) is in the second position (36) the distance separating is greater than when in the third position; the two first links (42) each including one end pivotally connected to the second pivot portion (26) of the main rod (20); an intermediate rod (44) Between the two first links (42), the intermediate rod (44) further includes a pivoting portion (45) formed on the outer peripheral surface, and the end of the telescopic rod (38) of the actuator cylinder (30) (40) ) pivotally connected to the pivoting portion (45) of the intermediate rod (44); a platform (48) pivotally connected to the other end of the two first links (42); and two second links (46) each including One end of the pivotal connection of the third pivot portion (28) of the main rod (20), and each of the second links (46) further includes The other end of the platform (48) is pivoted; a switch (54) is fixed to the end (40) of the telescopic rod (38) of the working cylinder (30), and the switch (54) includes a pressing rod that can be pressed ( 56), the pressing rod (56) is displaced between the pressing position and the releasing position, and when the pressing rod (56) is in the pressing position, the switch (54) forms an open state, when the pressing rod (56) is in the releasing position, The switch (54) forms a passage state; a control box (50) includes a controller (52) electrically connected to the switch (54), and the controller (52) of the control box (50) controls the actuator cylinder (30) The telescopic rod (38) is displaced between the first, second and third positions; when the telescopic rod (38) of the moving cylinder (30) is in the first position, the pressing rod (56) of the switch (54) is actuated The end faces (36) of the cylinders (32) of the cylinders (30) are spaced apart, so that the controller (52) can freely control the displacement of the telescopic rods (38) of the cylinder (30), and the platform (48) is placed flat at this time. Ground; when the moving cylinder (30) is in the second position, the pressing rod (56) of the switch (54) is separated by the end surface (36) of the cylinder (32) of the working cylinder (30), and the platform (48) It is to be used to cover a rear end face (15) of a body (13) provided on the vehicle chassis (11). The platform (48) is caused to be collapsed; when the moving cylinder (30) is in the third position, the pressing rod (56) of the switch (54) is abutted against the end surface (36) of the cylinder (32) of the working cylinder (30). The pressure causes the switch (54) to form an open state, at which time the platform (48) is flush with the surface of the body (13), and the controller (52) cannot further control the telescopic rod (38) of the cylinder (30) to be retracted. .