TWI676751B - Link type automatic lifting device - Google Patents

Abstract

The invention includes a vehicle body, an indicator signboard erected on the vehicle body, a fixed frame, a pair of side edge guide frames, a link assembly and a driving assembly. The pair of side edge guide frames, the connecting rod assembly and the driving assembly are mounted on a fixed frame. The instruction kanban is erected on the side edge guide frame and the link assembly; when the drive component pushes the link assembly, the link assembly enlarges the stroke to push the instruction kanban, and the instruction kanban is pushed to the top between the pair of side edge guide frames. And when the driving assembly pulls the link assembly, the link assembly also enlarges the stroke and pulls the indication board, and the indication board is pulled down between the pair of side edge guide frames. Therefore, this case also has the advantages that the lifting stroke of the indicator kanban can be enlarged, the two sides of the indicator kanban are fixed more securely, and the electric cylinder has a safer self-locking function.

Description

Link type automatic lifting device

The invention relates to a connecting rod type automatic lifting device, in particular to a connecting rod type automatic lifting device that can also enlarge the lifting stroke of an indicator kanban, both sides of the indicator kanban are relatively stable, and the electric cylinder has a self-locking function and is safer Lifting device.

The signs during road construction are generally installed on mobile engineering vehicles. In order to reduce wind resistance, the sign board will be lowered when the vehicle is traveling, and the sign board will be raised to a high level when necessary, so that passersby can clearly see relevant information.

The conventional automatic lifting device for the indication board of engineering vehicles is a hydraulic drive type. No other device has been seen that is better, cheaper, more stable, and more secure.

Referring to Figures 6 and 7, the structure of an automatic lifting device for a conventional engineering vehicle indicating kanban mainly includes: a movable vehicle body and a hydraulic lifting kanban.

Wherein, the hydraulic lifting kanban includes: an instruction kanban 91 on which predetermined information can be displayed, and the instruction kanban has a bottom edge.

A pair of telescopic support guide rod groups 92, each telescopic support guide rod group 92 includes a fixed frame 921 and a movable rod portion 922; wherein, one end of the fixed frame 921 is fixed to the vehicle body, and the other end is provided for the One end of the movable rod portion 922 is plugged in and relatively movable. The other end of the movable rod portion 922 is connected to the bottom edge of the indicating board 91.

A hydraulic driving unit 93 includes a hydraulic cylinder body 931 and an extension rod 932. The hydraulic cylinder body 931 is fixed to the vehicle body, one end of the extension rod 932 is relatively telescopic with the hydraulic cylinder body 931, and the other end of the extension rod 932 is connected to the bottom edge of the indicator board 91.

Thereby, when the hydraulic drive portion 93 is activated to perform the extension operation, the extension rod 932 is extended to raise the indicating sign 91. Conversely, when the hydraulic driving unit 93 is activated to perform a retracting operation, the extension rod 932 retracts and lowers the instruction sign board 91, thereby controlling the elevation of the instruction sign board 91.

However, the traditional design still has the following disadvantages:

[1] The lifting stroke of the kanban is limited by the lifting stroke of the hydraulic cylinder. As the lifting distance of the indicator kanban is exactly the same as the moving distance of the extension rod of the hydraulic cylinder, the hydraulic cylinder does not enlarge the stroke at all. Therefore, when using the hydraulic cylinder, if the lifting distance of the indicator kanban is 100 cm, you must choose The moving distance of the extension rod of the hydraulic cylinder must be at least 100 cm. Therefore, if the stroke of the kanban is larger, the relative specifications of the hydraulic cylinder are also higher, and the cost, volume and weight of the hydraulic cylinder are also relatively increased. Therefore, the lifting stroke of the indication board is limited by the lifting stroke of the hydraulic cylinder.

[2] Insufficient security on both sides of the indicator board. Because the kanban is only fixed at the bottom edge, the two sides of the kanban lack any kind of fixing. Once it encounters strong wind or rough road and vibrates violently, this kanban is easy to bend or break. Therefore, the lack of fixed security on both sides of the indicator board is not good.

[3] The hydraulic cylinder does not have a self-locking function. Since the hydraulic cylinder does not have a self-locking function, if the hydraulic cylinder is accidentally damaged, it may cause the indicator board to drop suddenly, which may cause accidental injury.

In view of this, it is necessary to develop technologies that can solve the above-mentioned conventional disadvantages.

The purpose of the present invention is to provide a link-type automatic lifting device, which has the advantages that the lifting stroke of the indicator kanban can be enlarged, the two sides of the indicator kanban are relatively fixed, and the electric cylinder has a self-locking function and is safer. In particular, the problem to be solved by the present invention is that the lifting stroke of the traditional indicator kanban is limited by the lifting stroke of the hydraulic cylinder, the two sides of the indicator kanban lack good fixing safety, and the hydraulic cylinder does not have a self-locking function. .

The technical means for solving the above problems is to provide a link-type automatic lifting device, which includes: a car body, which is movable, and an instruction signboard, which is provided on the vehicle body, and the instruction signboard is used to display predetermined information. ; The indicating board has a top edge, a bottom edge, two side edges and a pair of first pivot joints; a fixed frame has a bottom frame portion, a central slide bar, a slider, and a pair of side frames And a pair of second pivoting portions; the central slide bar and the pair of side frame portions are respectively mounted on the bottom frame portion, and the slider is sleeved on the central slide bar and can be relatively moved; a pair of sides The edge guide frame is erected on the pair of side frame portions, and the pair of side edge guide frames are used to receive and guide the two side edges of the indicator board; a link assembly has a pair of cross links, a A pair of upper links and a pair of lower links; the pair of cross links has a cross portion and two pairs of pivot end portions; the cross portion is pivotally disposed on the slider; one of the pair of pivot end portions Is pivotally connected to one end of the pair of upper links, and the other end of the pair of upper links is pivotally provided to the pair of first pivot portions; the pair of pivot ends The other pair is pivotally connected to one end of the pair of lower links, and the other end of the pair of lower links is pivotally provided to the pair of second pivot portions; the link assembly is formed into an enlargement mechanism; a drive assembly is provided with A driving part, a driven part, and a power part; the driven part is connected to the driving part at one end and connected to the slider at the other end; the driving part is connected to the driving part for driving the driven part The end performs a telescopic action with respect to the driving part; thereby, when the driven part performs an extending action, the slider is pushed away from the driving part, and synchronously moves to make the angle between the pair of cross links smaller, and The indicator board is pushed away from the driving part through the pair of upper links; when the driven part performs a retracting action, the slider is pulled closer to the driving part, and the linkage is synchronized to increase the included angle between the pair of cross links, Then, the indicating signboard is pulled closer to the driving portion through the pair of upper links.

The above-mentioned objects and advantages of the present invention can be easily understood from the detailed description and accompanying drawings of selected embodiments below.

The following examples and drawings are used to explain the present invention in detail:

10‧‧‧ body

20, 91‧‧‧ Indication board

21‧‧‧Top margin

22‧‧‧ bottom edge

23‧‧‧ side edge

24‧‧‧First pivot joint

30‧‧‧ fixed frame

31‧‧‧ bottom frame

32‧‧‧ Central slider

33‧‧‧ Slider

34‧‧‧Side frame section

35‧‧‧Second pivot joint

40‧‧‧Side Edge Guide Frame

50‧‧‧ connecting rod assembly

51‧‧‧ Cross Link

51A‧‧‧Intersection

51B‧‧‧ Pivot end

52‧‧‧Upper connecting rod

53‧‧‧ lower link

60‧‧‧Driver

61‧‧‧Driver

62‧‧‧Driven Department

63‧‧‧Power Department

92‧‧‧ Retractable Support Guide Set

921‧‧‧Fixed frame

922‧‧‧Activity pole

93‧‧‧Hydraulic Drive

931‧‧‧Hydraulic cylinder body

932‧‧‧Extension rod

θ 1‧‧‧ the first angle

θ 2‧‧‧ second angle

θ 3‧‧‧ third angle

P1‧‧‧Retracted position

P2‧‧‧ rising position

P3‧‧‧ Top Position

Figure 1 is a schematic diagram of the present invention

Figure 2 is a schematic diagram of the decomposition of the main structure of the present invention

Figure 3 is a schematic diagram of the appearance of Figure 2

Figure 4 is a schematic view of the structure of Figure 3 from other angles

Figure 5A is a schematic diagram before the indicator kanban of the present invention rises

Fig. 5B is a schematic diagram of the rising of the indicator kanban of the present invention

Figure 5C is a schematic diagram of the indication board of the present invention after rising

Figure 6 is a schematic diagram of a conventional device

Figure 7 is an enlarged schematic diagram of a part of the structure of Figure 6

Referring to Figures 1, 2, 3, and 4, the present invention is a link-type automatic lifting device, which includes: a car body 10, which is a movable person; and an indicator board 20, which is provided on the car body. On 10, the indication board 20 is used to display predetermined information. The indicating board 20 has a top edge 21, a bottom edge 22, two side edges 23, and a pair of first pivoting portions 24.

A fixing frame 30 includes a bottom frame portion 31, a central slide bar 32, a slider 33, a pair of side frame portions 34, and a pair of second pivoting portions 35. The central slide bar 32 and the pair of side frame portions 34 are respectively mounted on the bottom frame portion 31, and the slider 33 is sleeved on the central slide bar 32 and is relatively movable.

A pair of side edge guide frames 40 are erected on the pair of side frame portions 34. The pair of side edge guide frames 40 are used to receive and guide the two side edges 23 of the indicator board.

A link assembly 50 includes a pair of cross links 51, a pair of upper links 52 and a pair of lower links 53. The pair of cross links 51 has a cross portion 51A and two pairs of pivot end portions 51B; the cross portion 51A is pivotally disposed on the slider 33; one of the pair of pivot end portions 51B is pivotally connected to the One end of the pair of upper links 52 and the other end of the pair of upper links 52 are pivoted to the pair of first pivotal portions 24. The other pair of the pair of pivot end portions 51B is pivotally connected to one end of the pair of lower links 53, and the other end of the pair of lower links 53 is pivotally provided to the pair of second pivot portions 35; The assembly 50 forms an enlargement mechanism.

A driving assembly 60 includes a driving portion 61, a driven portion 62 and a power portion 63. The driven portion 62 is connected to the driving portion 61 at one end and is connected to the slider 33 at the other end; the power portion 63 is connected to the driving portion 61 to drive the end of the driven portion 62 relative to the driving portion 61 For telescopic action.

As a result, when the driven portion 62 performs an extending action, the slider 33 is pushed away from the driving portion 61, and the linkage angle is reduced in synchronization with the pair of cross links 51, and then through the pair of upper links 52 The indicator board 20 is pushed away from the driving portion 61. When the driven part 62 performs a retracting action, the slider 33 is pulled closer to the driving part 61, which synchronizes with each other to increase the angle between the pair of cross links 51, and then pulls the instruction through the pair of upper links 52. The kanban 20 is close to the driving portion 61.

In practice, the vehicle body 10 may be an engineering vehicle.

The indicating board 20 has a plurality of light-emitting diodes (LEDs for short), which are used to display predetermined information.

The driving assembly 60 may be an electric cylinder assembly (also called an electric gear cylinder).

The driving portion 61 corresponds to an electric cylinder assembly, and may be an electric cylinder block.

The driven portion 62 corresponds to an electric cylinder and may be a working lever.

The power unit 63 corresponds to an electric cylinder assembly, and may be an electric cylinder driving unit.

The invention may include the following actions:

[a] Descending: Referring to FIG. 5A, when the driven portion 62 is located at a retracted position P1, the slider 33 is close to the driving portion 61, and synchronized with each other to increase the angle between the pair of cross links 51 ( With a first included angle θ 1), the pair of upper links 52 pulls the indicating board 20 close to the driving portion 61.

[b] Ascending: Referring to FIG. 5B, the power part 63 pushes the driven part 62 from the retracted position P1 to an ascending position P2 through the driving part 61, and further moves the slider 33 away from the driving The portion 61 synchronously reduces the included angle between the pair of cross links 51 from the first included angle θ 1 to a second included angle θ 2, and further pushes the indicating signboard 20 through the pair of upper links 52 to start away from the driving portion 61.

[c] Sticking: Referring to FIG. 5C, the driven part 62 is continuously pushed from the rising middle position P2 to a sticking position P3, and then the slider 33 is further moved away from the driving part 61 to synchronize the pair of cross-connected parts. The included angle between the levers 51 is reduced from the second included angle θ 2 to a third included angle θ 3, and then the indicating signboard 20 is pushed to the top by the pair of upper links 52.

As for the decline, it is the reverse operation, which will not be repeated.

The main point of the present invention is that during the lifting of the indicating board 20, the two side edges 23 move relative to the pair of side frame portions 34, that is, both sides of the indicating board 20 are supported. The two side edges 23 and the pair of side frame portions 34 are still engaged with each other. In addition to improving the stability of the lifting process, it also improves the stability of the roof. In addition, through the link assembly 50, the maximum moving range can be generated in the smallest space (the lifting stroke is enlarged).

Further, if an electric cylinder assembly is used, it has a "self-locking" function when it is raised or lowered to a predetermined position. In case the electric cylinder assembly is damaged during use, the indicator board will not suddenly fall and cause an accident.

The advantages and effects of the present invention are as follows:

[1] The lifting stroke of the kanban can be enlarged. In this case, the link mechanism is used to form the magnifying mechanism. For example, when the moving stroke of the electric cylinder assembly is 1 unit, if the magnification ratio of the magnifying mechanism is 2 times, if the demand for instructing the kanban to rise and fall is 100 cm, only The moving stroke of the moving cylinder assembly is 50 cm The specifications are sufficient. Therefore, the cost, volume and weight of the electric cylinder components used can be relatively reduced, and the overall complexity is also greatly reduced. Therefore, the lifting stroke of the indicating kanban can be enlarged.

[2] The two sides of the indicator board are fixed more firmly. Because the traditional indicator kanban has only the bottom edge fixed, not only the bottom edge of the indicator kanban is fixed, but also the two sides of the indicator kanban are engaged with the pair of side edge guide frames (at least a part). In case of strong wind or rough road vibration, the indicator board in this case is less likely to bend or break. Therefore, the two sides of the indicator board are fixed relatively firmly.

[3] The electric cylinder has a safer self-locking function. Because the electric cylinder in this case has a self-locking function, if the electric cylinder is accidentally damaged, the indicator board will not suddenly drop and accidentally hurt people.

The above is only a detailed description of the present invention through a preferred embodiment, and any simple modifications and changes made to the embodiment will not depart from the spirit and scope of the present invention.

Claims (4)

The utility model relates to a link type automatic lifting device, which comprises: a car body, which is a movable person; an instruction signboard, which is arranged on the vehicle body, the instruction signboard is used to display predetermined information; the instruction signboard has a top Edge, a bottom edge, two side edges, and a pair of first pivot joints; a fixed frame having a bottom frame section, a central slide bar, a slider, a pair of side frame sections, and a pair of second pivot joints The central slide bar and the pair of side frame portions are respectively mounted on the bottom frame portion, the slider is sleeved on the central slide bar and can be moved relatively; a pair of side edge guide frames are set on the On the opposite side frame portion, the pair of side edge guide frames are used to receive and guide the two side edges of the indicator board; a link assembly has a pair of cross links, a pair of upper links and a pair of lower links The pair of cross links has a cross portion and two pairs of pivot ends; the cross portion is pivotally disposed on the slider; one of the pair of pivot ends is pivotally connected to the pair of upper links At one end of the rod, the other end of the pair of upper links is pivotally connected to the pair of first pivot portions; the other pair of the pair of pivot ends is pivotally connected to the pair of lower links. At one end, the other end of the pair of lower links is pivoted to the pair of second pivot joints; the link assembly forms an enlargement mechanism; a drive assembly has a drive part, a driven part, and a power part; One end of the driven part is connected to the driving part, and the other end is connected to the slider; the power part is connected to the driving part for driving the end of the driven part to perform a telescopic action with respect to the driving part; When the driven part performs an extending action, it pushes the slider away from the driving part, and synchronizes to make the included angle between the pair of cross links smaller, and then pushes the indicator board away from the drive through the pair of upper links. When the driven part performs a retracting action, the slider is pulled close to the driving part, which synchronizes to make the angle between the pair of cross-links larger, and then pulls the indicator signboard close to the pair through the pair of upper links. Drive section. The link-type automatic lifting device as described in item 1 of the scope of patent application, wherein the vehicle system is an engineering vehicle. The link-type automatic lifting device as described in item 1 of the scope of patent application, wherein the indicating board has a plurality of light-emitting diodes for displaying predetermined information. The link type automatic lifting device according to item 1 of the scope of patent application, wherein: the driving component is an electric cylinder component; the driving portion is an electric cylinder component corresponding to the electric cylinder component; the driven portion is opposite The electric cylinder should be an electric cylinder, and it is a working rod; the power unit corresponds to the electric cylinder assembly, and is an electric cylinder driving unit.