TW202022258A - Linkage type auto-lifting device capable of enlarging the lifting stroke of the indicator board - Google Patents

Abstract

The present invention includes a vehicle body; and an indicator board, a fixing frame, a pair of side edge guide frames, a linkage assembly and a driving assembly installed on the vehicle body. The pair of side edge guide frames, the linkage assembly and the driving assembly are mounted on the fixing frame. The indicator board is mounted on the side edge guide frame and the linkage assembly. When the driving assembly pushes the linkage assembly, the linkage assembly enlarges the stroke to push the indicator board, and the indicator board is pushed to the top between the pair of side edge guide frames. When the driving assembly pulls the linkage assembly, the linkage assembly also enlarges the stroke to pull the indicator board, and the indicator board is pulled down between the pair of side edge guide frames. Therefore, the present invention is advantageous in that the lifting stroke of the indicator board can be enlarged, two sides of the indicator board are fixed and thus relatively stable, and the electric cylinder has a self-locking function and is safer.

Description

Link type automatic lifting device

The present invention relates to a connecting rod type automatic lifting device, in particular to a connecting rod type automatic which has both indicating signage which can be enlarged, the two sides of the indicating signage are fixed and stable, and the electric cylinder has self-locking function and is safer. Lifting device.

Indication signs during road construction are generally installed on mobile construction vehicles. In order to reduce wind resistance, the indicating signs will be lowered when the vehicles are moving, and then raised to a high place when necessary, so that passers-by can clearly see the relevant information. The automatic lifting device for the traditional engineering vehicle indicating sign board is hydraulically driven. There are no other devices that are more usable, cheaper, more stable and safer. Referring to Figures 6 and 7, the structure of the automatic lifting device for the traditional construction vehicle indicating signage mainly includes: a movable body and a hydraulic lifting sign. Among them, the hydraulic lifting sign includes: an indicating sign 91 on which predetermined information can be displayed, and the indicating sign has a bottom edge. A pair of retractable support guide rod groups 92, each of which 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 inserted and can move relatively. The other end of the movable rod 921 is connected to the bottom edge of the indicating sign 91. A hydraulic driving part 93 has 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 indicating sign 91. Thereby, when the hydraulic driving part 93 is activated to perform an extension operation, the extension rod 932 is extended and the indicating sign 91 is raised. Conversely, when the hydraulic driving part 93 is activated to perform a retracting action, the extension rod 932 is retracted and the indicating sign 91 is lowered, thereby controlling the elevation of the indicating sign 91. However, the traditional design still has the following shortcomings: [1] The lifting stroke of the indicating sign is limited by the lifting stroke of the hydraulic cylinder. Since the lifting distance of the indicating board is exactly the same as the moving distance of the extension rod of the hydraulic cylinder, the hydraulic cylinder has no effect at all to amplify the stroke. Therefore, when the hydraulic cylinder is selected, if the lifting stroke of the indicating board is 100 cm, use The movable distance of the extension rod of the hydraulic cylinder must be at least 100 cm. Therefore, if the stroke of the indicated kanban is larger, the relative specifications of the hydraulic cylinder will also be higher. At the same time, the cost, volume, and weight of the hydraulic cylinder will increase relatively. Therefore, the lifting stroke of the indicating board is limited by the lifting stroke of the hydraulic cylinder. [2] Indication of the lack of fixed security on both sides of the board. Since only the bottom edge of the indicating board is fixed, the two sides of the indicating board lack any form of fixation. Once it encounters strong wind or violent vibration on uneven roads, the indicating board is easy to bend or break. Therefore, the two sides of the indicating board lacked fixed security and the safety was not good. [3] The hydraulic cylinder has no self-locking function. Since the hydraulic cylinder has no self-locking function, if the hydraulic cylinder is accidentally damaged, the indicator board may drop suddenly, which may cause accidental injury. In view of this, it is necessary to develop a technology that can solve the above-mentioned conventional shortcomings.

The purpose of the present invention is to provide a link type automatic lifting device, which has the advantages of increasing the lifting stroke of the indicating board, fixing the two sides of the indicating board more firmly, and the electric cylinder with self-locking function and safer. In particular, the problem to be solved by the present invention is that the lifting stroke of the traditional indicating board is limited by the lifting stroke of the hydraulic cylinder, the two sides of the indicating board are not fixed and the safety is not good, and the hydraulic cylinder has no self-locking function. . The technical means to solve the above problems is to provide a link type automatic lifting device, which includes: a vehicle body, which is movable; an indicator board, which is set on the vehicle body, and the indicator board is used to display predetermined information ; The indicating board has a top edge, a bottom edge, two side edges and a pair of first pivotal parts; a fixed frame with a bottom frame, a central sliding rod, a slider, a pair of side frames Part and a pair of second pivotal parts; the central sliding rod and the pair of side frame parts are respectively erected on the bottom frame part, the sliding block is sleeved on the central sliding rod and can move relatively; The edge guide frame is erected on the pair of side frame parts, and the pair of side edge guide frames are used to accommodate and guide the two side edges of the indicating signage; a connecting rod assembly has a pair of cross connecting rods, one The pair of upper links and a pair of lower links; the pair of cross links have a cross portion and two pairs of pivoted ends; the cross portion is pivoted on the slider; one of the pair of pivoted ends Is pivotally connected to one end of the pair of upper connecting rods, the other end of the pair of second connecting rods is pivoted to the pair of first pivotal portions; the other pair of the pair of pivotal ends is pivotally connected to the pair of lower One end of the connecting rod, and the other end of the pair of lower connecting rods are pivoted to the pair of second pivoting parts; the connecting rod assembly forms an amplifying mechanism; a driving assembly has a driving part, a driven part and a Power part; one end of the driven part is inserted into the driving part, and the other end is connected to the slider; the power part is connected to the driving part to drive the end of the driven part to expand and contract relative to the driving part ; With this, when the driven part performs an extension action, the slider is pushed away from the driving part, synchronously linked to make the angle between the pair of cross links smaller, and then push the indicating signboard through the pair of upper links Keep away from the driving part; when the driven part is retracted, the sliding block is pulled closer to the driving part, and the synchronous linkage makes the angle between the pair of cross links increase, and then pulls the indicator through the pair of upper links The kanban is close to the driving part. The above objectives and advantages of the present invention can be easily understood from the detailed description of the selected embodiments and the accompanying drawings. Hereinafter, the present invention will be described in detail with the following examples and drawings:

Referring to Figures 1, 2, 3, and 4, the present invention is a linkage type automatic lifting device, which includes: a vehicle body 10, which is a movable person; an indicator board 20, which is attached to the vehicle body On 10, the indicating 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 pivotal portions 24. A fixed frame 30 has a bottom frame portion 31, a central sliding rod 32, a sliding block 33, a pair of side frame portions 34 and a pair of second pivotal portions 35. The central slide bar 32 and the pair of side frame portions 34 are respectively erected on the bottom frame portion 31, and the slider 33 is sleeved on the central slide bar 32 and can move relatively. A pair of side edge guide frames 40 are erected on the pair of side frame portions 34, and the pair of side edge guide frames 40 are used to accommodate and guide the two side edges 23 of the indicating signage. A connecting rod assembly 50 has a pair of cross connecting rods 51, a pair of upper connecting rods 52 and a pair of lower connecting rods 53. The pair of cross links 51 has a cross portion 51A and two pairs of pivotal end portions 51B; the cross portion 51A is pivoted on the slider 33; one pair of the pair of pivotal ends 51B is pivotally connected to the For one end of the upper connecting rod 52, the other end of the pair of second connecting rods 52 is pivoted to the pair of first pivoting portions 24. The other pair of the pair of pivotal ends 51B is pivotally connected to one end of the pair of lower connecting rods 53, and the other end of the pair of lower connecting rods 53 is pivoted to the pair of second pivotal portions 35; so that the connecting rod The assembly 50 forms an amplifying mechanism. A driving assembly 60 has a driving part 61, a driven part 62 and a power part 63. One end of the driven part 62 is inserted into the driving part 61, and the other end is connected to the slider 33; the power part 63 is connected to the driving part 61 for driving the end of the driven part 62 relative to the driving part 61 , Perform telescopic action. Thereby, when the driven part 62 performs an extending action, the slider 33 is pushed away from the driving part 61, and the synchronous linkage makes the angle between the pair of cross links 51 smaller, and then through the pair of upper links 52 Push the indicating board 20 away from the driving part 61. When the driven part 62 performs a retracting action, the slider 33 is pulled close to the driving part 61, synchronously linked to increase the angle between the pair of cross links 51, and then the indicator is pulled through the pair of upper links 52 The sign board 20 is close to the driving part 61. In practice, the vehicle body 10 may be an engineering vehicle. The indicating board 20 has a plurality of light-emitting diodes (light-emitting diodes, LEDs for short) for displaying predetermined information. The driving assembly 60 can be an electric cylinder assembly (or called an electric gear cylinder). The driving part 61 corresponds to an electric cylinder assembly, and may be an electric cylinder block. The driven part 62 corresponds to an electric cylinder, and may be a working rod. The power part 63 corresponds to the electric cylinder assembly, and may be an electric cylinder driving part. The present invention may include the following actions: [a] Lowering: referring to Fig. 5A, when the driven part 62 is at a retracted position P1, the slider 33 is close to the driving part 61, and the pair of cross links is synchronized and linked The included angle between 51 becomes larger (there is a first included angle θ1), and the pair of upper connecting rods 52 pull the indicating sign board 20 to approach the driving part 61. [b] Ascending: referring to Figure 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 then links the slider 33 away from the driving The portion 61 simultaneously reduces the included angle between the pair of cross links 51 from the first included angle θ1 to a second included angle θ2, and then pushes the indicating signboard 20 to start to move away from the driving portion 61 through the pair of upper links 52. [c] Top: Referring to Figure 5C, the driven part 62 is continuously pushed from the rising position P2 to a top position P3, and then the sliding block 33 is continuously moved away from the driving part 61 to synchronize the pair of cross connection The included angle between the rods 51 is reduced from the second included angle θ2 to a third included angle θ3, and the indicating sign board 20 is pushed to the top through the pair of upper links 52. As for the drop, it is a reverse operation, so I won’t repeat it. The key point of the present invention is that during the raising and lowering process of the indicating signage 20, the two side edges 23 move relative to the pair of side frame portions 34, that is, both sides of the indicating signage 20 are supported. The two side edges 23 and the pair of side frame portions 34 still remain embedded in 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 largest moving range can be generated in the smallest space (the lifting stroke is enlarged). Furthermore, if the electric cylinder assembly is used, it has a unique "self-locking" function when it rises or drops to a predetermined position. In case the electric cylinder assembly is damaged during use, it indicates that the billboard will not suddenly drop and cause an accident. The advantages and effects of the present invention are as follows: [1] The lifting stroke of the indicating signage can be enlarged. In this case, the connecting rod assembly is used to form the enlargement mechanism. For example, when the moving stroke of the electric cylinder assembly is 1 unit, if the enlargement ratio of the enlargement mechanism is 2 times, if the demand for the instructing sign to lift is 100 cm, only The moving stroke of the cylinder assembly is only 50 cm. Therefore, the cost, volume, and weight of the selected electric cylinder assembly can be relatively reduced, and the overall complexity is also greatly reduced. Therefore, the lifting stroke of the instruction sign can be enlarged. [2] The two sides of the indicating board are fixed and stable. Since the traditional indication board only has a fixed bottom edge, the indication board in this case not only has a fixed bottom edge, but the two sides of the indication board are also embedded (at least partly) with the pair of side frames. In the event of strong winds or severe vibrations on uneven roads, the indicator board in this case is less likely to bend or break. Therefore, the two sides of the indicator board are fixed and stable. [3] The electric cylinder has a self-locking function and is safer. Since the electric cylinder in this case has a self-locking function, in case the electric cylinder is accidentally damaged, the indicator board will not drop suddenly and accidentally hurt people. The above is only a detailed description of the present invention with 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.

10: Car body 20, 91: Instruction board 21: Top edge 22: bottom edge 23: side edge 24: The first pivot 30: fixed frame 31: bottom frame 32: Central slider 33: Slider 34: Side frame 35: second pivot 40: Side guide frame 50: connecting rod assembly 51: Cross Link 51A: Intersection 51B: Pivot end 52: upper link 53: Lower link 60: drive components 61: Drive 62: Driven part 63: Power Department 92: Telescopic support guide rod group 921: fixed frame 922: movable pole 93: Hydraulic drive unit 931: Hydraulic cylinder body 932: Extension Rod θ1: The first included angle θ2: second included angle θ3: third included angle P1: retracted position P2: Ascending position P3: Top position

Figure 1 is a schematic diagram of the present invention. Figure 2 is a schematic view of the main structure of the present invention. Figure 3 is a schematic view of the appearance of Figure 2. Figure 4 is a schematic view of a part of the structure of Figure 3 from another angle. Figure 5A Figure 5B is a schematic diagram of the indicator sign of the present invention before rising Figure 5C is a schematic diagram of the indicator sign of the present invention after rising Figure 6 is a schematic diagram of a conventional device Figure 7 is a sixth An enlarged schematic diagram of part of the structure of the figure

20: Instruction board

21: Top edge

22: bottom edge

23: side edge

24: The first pivot

30: fixed frame

31: bottom frame

32: Central slider

33: Slider

34: Side frame

35: second pivot

40: Side guide frame

50: connecting rod assembly

51: Cross Link

51A: Intersection

51B: Pivot end

52: upper link

53: Lower link

60: drive components

61: Drive

62: Driven part

63: Power Department

Claims (4)

A linkage type automatic lifting device includes: a vehicle body, which is a movable person; an indicating sign board, which is arranged on the vehicle body, the indicating sign board is used to display predetermined information; the indicating sign board has a top Rim, a bottom edge, two side edges and a pair of first pivoting parts; a fixed frame having a bottom frame part, a central sliding rod, a sliding block, a pair of side frame parts and a pair of second pivoting parts Section; the central slide bar and the pair of side frame portions are respectively erected on the bottom frame portion, the slider is sleeved on the central slide bar, and can move relatively; a pair of side guide frame, is set on the On the opposite side frame, the pair of side edge guide frames are used to accommodate and guide the two side edges of the indicating signage; a connecting rod assembly has a pair of cross connecting rods, a pair of upper connecting rods and a pair of lower connecting rods Connecting rod; the pair of cross connecting rods has a cross portion and two pairs of pivotal ends; the cross portion is pivoted on the slider; one of the pair of pivotal ends is pivotally connected to the pair One end of the rod, the other end of the pair of second connecting rods is pivoted to the pair of first pivoting parts; the other pair of the pair of pivoting ends is pivotally connected to one end of the pair of lower connecting rods, the pair of lower The other end of the connecting rod is pivoted on the pair of second pivoting parts; the connecting rod assembly forms an amplifying mechanism; a driving assembly has a driving part, a driven part and a power part; the driven part is One end is inserted into the driving part, and the other end is connected to the slider; the power part is connected to the driving part, and is used to drive the end of the driven part to expand and contract relative to the driving part; thereby, when the driven part is driven The extension action is to push the sliding block away from the driving part, and the synchronous interlocking action reduces the angle between the pair of cross links, and then pushes the indicating board away from the driving part through the pair of upper links; The driving part performs a retracting action to pull the sliding block close to the driving part, synchronously interlocking to make the angle between the pair of cross links increase, and then pull the indicating signboard close to the driving part through the pair of upper links. Such as the link type automatic lifting device described in item 1 of the scope of patent application, wherein the vehicle system is an engineering vehicle. For the link type automatic lifting device described in item 1 of the scope of the patent application, the indicating signage has a plurality of light-emitting diodes for displaying predetermined information. For the link type automatic lifting device described in item 1 of the scope of patent application, wherein: the drive assembly is an electric cylinder assembly; the drive part is an electric cylinder block corresponding to the electric cylinder assembly; the driven part is a pair of It should be an electric cylinder block instead of a working rod; this power part corresponds to an electric cylinder assembly, but is an electric cylinder drive part.

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