CN218708865U - Lifting platform - Google Patents

Abstract

The utility model discloses a lifting platform, which comprises a bearing platform, a lifting support, a driving device, a chassis, a support rod and a linkage mechanism, wherein the lifting support is arranged on the chassis, the bearing platform is arranged on the lifting support, the support rod is arranged on the chassis, and the linkage mechanism is arranged between the lifting support and the support rod; the driving device is arranged on the chassis and can drive the lifting support to be unfolded or folded; the lifting support drives the bearing platform to be far away from the chassis and drives the supporting rod to be unfolded through the linkage mechanism, or drives the bearing platform to be close to the chassis and drives the supporting rod to be folded through the linkage mechanism. The utility model discloses the automatic support of opening when lift platform goes up, pack up the support, convenient to use and safety automatically when descending.

Description

Lifting platform

Technical Field

The utility model relates to a lifting device, in particular to a lifting platform which is convenient to unfold or fold and safe to use.

Background

The lifting platform is an auxiliary tool which provides convenience for people to carry heavy objects or carry high-altitude operation in daily life. The existing lifting platform generally includes a chassis, a lifting bracket and a carrying platform, and the carrying platform is raised or lowered by extending or retracting the lifting bracket. However, since the center of gravity of the bearing platform moves upwards after the bearing platform rises, if the chassis is not adjusted in time, rollover is easy to happen, and safety accidents are caused. Therefore, support legs are additionally arranged on the chassis of some lifting platforms in the market at present, and when the bearing platform is lifted, the support legs can be unfolded to strengthen the support of the chassis; when the bearing platform descends, the supporting legs can be folded, the size is reduced, and the transportation is convenient. However, the existing lifting platform legs are generally independent of the movement of the lifting platform, and need manual operation when being unfolded or folded, which is very inconvenient to use. And the user always has a lucky psychology, and may not actively open the support legs when using, which causes certain security loopholes.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic support of opening when going up, automatic support of packing up when descending, convenient to use and safe lift platform.

In order to achieve the above object, the lifting platform provided by the present invention comprises a bearing platform, a lifting support, a driving device, a chassis, a support rod and a linkage mechanism, wherein the lifting support is arranged on the chassis, the bearing platform is arranged on the lifting support, the support rod is arranged on the chassis, and the linkage mechanism is arranged between the lifting support and the support rod; the driving device is arranged on the chassis and can drive the lifting support to be unfolded or folded; the lifting support drives the bearing platform to be far away from the chassis and drives the supporting rod to be unfolded through the linkage mechanism, or drives the bearing platform to be close to the chassis and drives the supporting rod to be folded through the linkage mechanism.

Compared with the prior art, the linkage mechanism is arranged between the lifting support and the supporting rod, so that the linkage mechanism is driven to move by the unfolding action when the lifting support is used for driving the bearing platform to ascend, and the supporting rod is driven to unfold by the linkage mechanism; otherwise, the supporting rod is driven to be folded, so that the supporting rod can be automatically opened along with the ascending of the bearing platform, the bearing platform descends to be automatically folded, the supporting force of the chassis can be enhanced during opening, the whole lifting platform is prevented from being turned on one side, the size can be reduced during folding, and the transportation is convenient. Therefore, the utility model discloses lift platform uses very conveniently. In addition, the supporting rod is automatically unfolded or folded along with the lifting of the bearing platform, and manual operation of a user is not needed, so that the function of forcing the user to use the support can be achieved when the support is used, and the use safety is greatly improved.

Preferably, the supporting rod can extend out of the chassis when being unfolded and can be retracted into the chassis when being folded.

Preferably, the support rod is slidably disposed on the chassis. Therefore, the function of unfolding or folding the supporting rod on the chassis can be simply and conveniently realized, and the structure of the lifting platform is simplified.

Preferably, the linkage mechanism comprises a linkage rod, one end of the linkage rod is pivoted to the support rod, and the other end of the linkage rod is pivoted to the lifting support. Through setting up the gangbar, make the one end of gangbar is following when lifting support removes, drive through the removal of the other end the bracing piece removes, and then reaches synchronous drive the purpose of bracing piece, simple structure, convenient operation.

Specifically, the linkage mechanism further comprises a connecting piece, the other end of the linkage rod is pivoted to the connecting piece, and the connecting piece is connected to the lifting support. The linkage rod can be overlapped with the supporting rod when the lifting support is completely unfolded by utilizing the connecting piece, so that the linkage rod can drive the supporting rod to extend out of the chassis to the maximum extent, and the compactness of the structure is improved.

Preferably, a guide rail is arranged on the chassis, a middle shaft is arranged at the upper end of the lifting support, the middle shaft can be arranged on the chassis along the guide rail in a sliding manner, and the linkage mechanism is connected to the middle shaft. Through the arrangement of the guide rail, the linkage rod can be used as a sliding supporting point in the middle of the middle shaft on one hand, and on the other hand, the accuracy and the stability of the movement of the linkage rod can be guaranteed.

Preferably, the lifting support comprises at least one set of scissor arm mechanism, the scissor arm mechanism comprises a first support arm and a second support arm, wherein one end of the first support arm close to the chassis is pivoted with the chassis, and one end of the second support arm close to the chassis is slidably arranged on the chassis; one of the first support arm and the second support arm close to the bearing platform is pivoted on the bearing platform, and the other one is arranged on the lifting platform in a sliding manner. The fork arm cutting mechanism can be easily unfolded or folded, so that the purpose of driving the bearing platform to lift is achieved, the structure is very simple, and the operation and the control are very convenient.

Specifically, a sliding guide rail is arranged on the inner side of the chassis, a middle shaft is arranged at one end of the second support arm close to the chassis, and the end part of the middle shaft is slidably arranged on the sliding guide rail. Through setting up sliding guide makes lifting support's lower extreme can be followed sliding guide slides, can prevent on the one hand lifting support's lower extreme accident breaks away from the chassis, the another side can be guaranteed lifting support lower extreme removes accuracy and stability.

Specifically, the driving device is a telescopic driver, one end of which is pivoted to the chassis, and the other end of which is pivoted to any one of the first supporting arm, the second supporting arm and the bearing platform. Therefore, the first supporting arm and the second supporting arm can be crossed and unfolded or mutually closed and folded, and the control convenience is improved.

Preferably, the chassis is provided with a guide sleeve, and the support rod is slidably sleeved on the guide sleeve. The guide sleeve can ensure that the supporting rod can stably and smoothly slide and stretch, and the stability of unfolding and folding is improved.

Preferably, the support rod is arranged on the chassis in a swinging manner.

Specifically, the linkage mechanism comprises a linkage rod, the linkage rod is connected to the lifting support, one end of the linkage rod is slidably arranged on the supporting rod, and the middle of the supporting rod is pivoted to the chassis. One end of the linkage rod slides relative to the supporting rod, so that the supporting rod can swing around the pivoting center when pushed by the linkage rod, and the supporting rod can extend out of the chassis after swinging or retract into the chassis after swinging, thereby realizing folding or unfolding.

Specifically, one of the supporting rod and the linkage rod is provided with a sliding track, and the other of the supporting rod and the linkage rod is arranged on the sliding track in a sliding manner through a shaft pin. Through the arrangement of the sliding rail, the shaft pin of one of the linkage rod and the support rod is in sliding fit with the sliding rail, so that the linear motion of the linkage rod drives the support rod to swing, and the purpose of swinging, folding or unfolding the support rod is further achieved.

Specifically, the linkage mechanism further comprises a connecting piece, the linkage rod is fixed on the connecting piece, and the connecting piece is connected to the lifting support.

Preferably, the chassis and the support rod are provided with rollers. Therefore, the whole lifting platform can be conveniently moved, and the moving flexibility and the use convenience are improved.

Drawings

Fig. 1 is a perspective view of a lifting platform according to a first embodiment of the present invention when deployed.

Fig. 2 is a side view of a lifting platform according to a first embodiment of the present invention.

Fig. 3 is a bottom state diagram of the lifting platform according to the first embodiment of the present invention when it is deployed.

Fig. 4 is a perspective view of the lifting platform according to the first embodiment of the present invention when folded.

Fig. 5 is a bottom view of the lifting platform according to the first embodiment of the present invention when it is folded.

Fig. 6 is a perspective view of the lifting platform according to the second embodiment of the present invention when it is deployed.

Fig. 7 is a bottom state view of the lifting platform according to the second embodiment of the present invention when it is deployed.

Fig. 8 is a bottom view of the lifting platform according to the second embodiment of the present invention when folded.

Detailed Description

In order to explain the technical contents, structural features, and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

As shown in fig. 1 to 5, a structure of a lifting platform 100 according to a first embodiment of the present invention is shown, and specifically, as shown below.

As shown in fig. 1 to 3, the lifting platform 100 of the present invention includes a bearing platform 1, a lifting bracket 2, a driving device 3, a chassis 4, a support rod 5 and a linkage mechanism 6, wherein the lifting bracket 2 is disposed on the chassis 4, the bearing platform 1 is disposed on the lifting bracket 2, the support rod 5 is disposed on the chassis 4, and the linkage mechanism 6 is disposed between the lifting bracket 2 and the support rod 5; the driving device 3 is arranged on the chassis 4 and can drive the lifting support 2 to be unfolded or folded; the lifting support 2 drives the bearing platform 1 to be far away from the chassis 4 and drives the supporting rod 5 to be unfolded through the linkage mechanism 6, or drives the bearing platform 1 to be close to the chassis 4 and drives the supporting rod 5 to be folded through the linkage mechanism 6.

Referring to fig. 1, 3 and 5, the support rod 5 is slidably disposed on the chassis 4. Specifically, two sides of the middle of the bottom of the chassis 4 are provided with guide sleeves 41, and the two support rods 5 are respectively arranged on two sides of the middle of the bottom of the chassis 4; the support rods 5 are respectively sleeved on the guide sleeves 41 in a sliding manner, and the guide sleeves 41 can ensure that the support rods 5 can stably and smoothly slide and stretch, so that the unfolding and folding stability is improved. The support rod 5 can extend out of the outer side of the chassis 4 when being unfolded and can be retracted into the bottom of the chassis 4 when being folded. Therefore, the function of unfolding or folding the supporting rod 5 on the chassis 4 can be simply and conveniently realized, and the structure of the lifting platform 100 is simplified.

Referring to fig. 1, 3 and 5, the linkage mechanism 6 includes a linkage rod 61, one end of the linkage rod 61 is pivotally connected to the outer end of the support rod 5, and the other end is pivotally connected to the lifting bracket 2. Through setting up the gangbar 61, make the one end of gangbar 61 is following when lifting support 2 removes, drive through the removal of the other end the bracing piece 5 removes, and then reaches synchronous drive the purpose of bracing piece 5, simple structure, convenient operation. The utility model discloses a quantity of gangbar 61 is two, its with the bracing piece one-to-one ground is connected. Specifically, the linkage mechanism 6 further includes a connecting member 62, the other end of the linkage rod 61 is pivoted to the connecting member 62, and the connecting member 62 is connected to the lifting bracket 2. The linkage rod 61 can be overlapped with the support rod 5 when the lifting support 2 is completely unfolded by utilizing the connecting piece 62, so that the linkage rod 61 can drive the support rod 5 to extend out of the chassis 4 to the maximum extent, and the compactness of the structure is improved. Connecting piece 62's quantity is one, connecting piece 62 is triangular structure, wherein the apex angle with lifting support 2's lower extreme is connected, two other base angles respectively with two the tip pin joint of gangbar 61. When the lifting support 2 drives the two linkage rods 61 to enable the two support rods 5 to completely extend out of the chassis 4, the linkage rods 61 and the corresponding support rods 5 are in a superposed state.

As shown in fig. 1 and fig. 2, the lifting bracket 2 includes at least one set of scissors arm mechanism 21, the scissors arm mechanism 21 includes the first support arm 211 and with the second support arm 212 of the first support arm 211 cross pin joint, the pivot axis between them is a, the scissors arm mechanism 21 is two sets of. One end of the first support arm 211 close to the chassis 4 is pivotally connected to the chassis 4, and one end of the second support arm 212 close to the chassis 4 is slidably disposed on the chassis 4; one of the first support arm 211 and the second support arm 212 close to the carrying platform 1 is pivotally connected to the carrying platform 1, and the other one is slidably disposed in the sliding slot of the lifting platform 100. The utility model discloses wherein be close to the lower extreme of bearing platform 1's first support arm 211 with be close to the upper end pin joint of chassis 4's second support wall, the upper end set up with sliding in bearing platform 1. The lower end of the second supporting arm 212 close to the carrying platform 1 is pivoted with the upper end of the first supporting wall close to the chassis 4. The upper end of the second supporting arm 212 close to the bearing platform 1 is pivoted with the bearing platform 1. The two groups of scissor arm mechanisms 21 can be easily unfolded or folded, so that the purpose of driving the bearing platform 1 to lift is achieved, the structure is very simple, and the operation and the control are very convenient.

Referring to fig. 1, specifically, a sliding guide rail 42 is disposed inside the chassis 4, a middle shaft 213 is pivotally connected to a lower end of the second support arm 212 close to the chassis 4, and an end of the middle shaft 213 is slidably disposed on the sliding guide rail 42. The connecting element 62 is connected to the central shaft 213 by a pivot pin. Through setting up sliding guide 42 makes the lower extreme of lifting support 2 can be followed sliding guide 42 slides, can prevent on the one hand the lower extreme accident of lifting support 2 breaks away from chassis 4, and the another side can guarantee the accuracy and the stability that lifting support 2 lower extreme removed.

Referring to fig. 1 and 3, a guide rail 43 is disposed on the chassis 4, and an extending direction of the guide rail 43 is perpendicular to a sliding direction of the support rod 5. The guide rail 43 is an elongated hole. The middle shaft 213 is slidably disposed on the chassis 4 along the guide rail 43, and the linkage 6 is connected to the middle shaft 213. Specifically, the connecting member 62 is connected to the middle portion of the middle shaft 213 by a shaft pin passing through the elongated hole. The pin is slidable in the elongated hole. Through the arrangement of the guide rail 43, on one hand, the guide rail can be used as a sliding support point in the middle of the middle shaft 213, and on the other hand, the moving accuracy and stability of the linkage rod 61 can be ensured.

The driving device 3 is a telescopic driver, one end of which is pivoted to the chassis 4, and the other end of which is pivoted to any one of the first supporting arm 211, the second supporting arm 212 and the carrying platform 1. Therefore, the first support arm 211 and the second support arm 212 can be crossed and unfolded or mutually closed and folded, and the control convenience is improved. The flexible driver is electric putter, of course, also can be cylinder or hydro-cylinder, also can be motor drive screw-nut's form.

The bottom and the support rod 5 are provided with rollers 7. Therefore, the whole lifting platform 100 can be conveniently moved, and the moving flexibility and the use convenience are improved.

In view of the above description and the accompanying drawings, the lifting principle of the lifting platform 100 of the present invention will be described in detail.

When the foldable bicycle is folded, the driving device 3 is contracted, the lifting support 2 is folded, the bearing platform 1 and the chassis 4 are closed, and the supporting rod 5 is retracted into the chassis 4. When the bearing platform needs to be unfolded, the output end of the driving device 3 extends out to drive the scissor arm mechanism 21 to be unfolded, and the scissor arm mechanism 21 drives the bearing platform 1 to ascend. Meanwhile, the middle shaft 213 near the lower end of the second support arm 212 on the chassis 4 moves along one end of the sliding guide rail 42 to the other end, and then drives the connecting member 62 to move, so that the connecting member 62 drives one end of the two linkage rods 61 to move, and the other end of the linkage rod 61 pushes the support rods 5 connected to each other, so that the two support rods 5 extend out of the chassis 4 at the same time. When the lifting support 2 is completely unfolded, the bearing platform 1 is lifted to the highest position, the middle shaft 213 slides to the other end of the sliding guide rail 42, and the support rod 5 completely extends out of the chassis 4 and supports the chassis 4. When the folding device needs to be folded, the driving device 3 is only needed to be started again, so that the output end of the driving device 3 is contracted, and the bearing platform 1 can be driven to approach the chassis 4 and drive the supporting rod 5 to retract into the chassis 4.

Compared with the prior art, the linkage mechanism 6 is arranged between the lifting support 2 and the support rod 5, and the expansion action when the lifting support 2 drives the bearing platform 1 to ascend drives the linkage mechanism 6 to act, so that the linkage mechanism 6 drives the support rod 5 to expand; otherwise, the supporting rod 5 is driven to be folded, so that the supporting rod 5 can be automatically opened along with the ascending of the bearing platform 1, and can be automatically folded when the bearing platform 1 descends, the supporting force of the chassis 4 can be enhanced when the bearing platform 1 is opened, the whole lifting platform 100 is prevented from being turned on one side, the size can be reduced when the lifting platform is folded, and the transportation is convenient. Therefore, the lifting platform 100 of the present invention is very convenient to use. In addition, the supporting rod 5 is automatically unfolded or folded along with the lifting of the bearing platform 1, and manual operation of a user is not needed, so that the function of forcing the user to use and support can be achieved during use, and the use safety is greatly improved.

As shown in fig. 6 to 8, the structure of a lifting platform 100' according to a second embodiment of the present invention is shown.

The lifting platform 100' of the second embodiment is similar to that of the first embodiment, and the structures of the carrying platform 1', the lifting bracket 2', the driving device 3' and the chassis 4' of the second embodiment are the same as those of the first embodiment, and the difference is the structures of the supporting rod 5' and the linkage mechanism 6 '. The two support rods 5 'of the present embodiment are respectively arranged on two opposite sides of the chassis 4' in a swinging manner. Specifically, the linkage mechanism 6' comprises linkage rods 61', and the number of the linkage rods 61' is one; the linkage rod 61' is connected to the lifting bracket 2', and two end portions thereof are respectively slidably and pivotally arranged on the two support rods 5', and the middle portions of the support rods 5' are pivotally connected to the chassis 4'. By sliding one end of the linkage rod 61 'relative to the support rod 5', the support rod 5 'can swing around the pivot central shaft when pushed by the linkage rod 61', so that the support rod 5 'can extend out of the chassis 2' after swinging or retract into the chassis 2 after swinging, and folding or unfolding is realized.

The support rod 5 'is provided with a sliding track 51', and the sliding track 51 'is an elongated hole extending along the length direction of the support rod 5'. Specifically, the support rod 5' includes a first rod 5a ' and a second rod 5b ', one end of the first rod 5a ' is fixedly connected with one end of the second rod 5b ', the first rod 5a ' is provided with a roller 7', and the sliding track 51' is arranged on the second rod 5b '. The linkage rod 61 'is slidably disposed on the sliding rail 51' through a shaft pin. Through the arrangement of the sliding track 51', the shaft pin of the linkage rod 61' is in sliding fit with the sliding track 51', so that the linear motion of the linkage rod 61' can drive the support rod 5 'to swing, and the purpose of swinging, folding or unfolding the support rod 5' is further realized. In addition, the connection between the support rod 5' and the linkage rod 61' in this embodiment may also be opposite to the above, that is, the linkage rod 61' is provided with a sliding track, and the support rod 5' is connected with the sliding track of the linkage rod 61' in a sliding fit manner through a shaft pin, so that the same technical effect can be achieved.

The linkage mechanism 6 'further comprises a connecting piece 62', the linkage rod 61 'is fixed on the connecting piece 62', and the connecting piece 62 'is connected to the lifting bracket 2'. Specifically, near the bottom end of the second support arm 212' of the chassis 4', a center shaft 213', an end of the center shaft 213' is slidably disposed on the sliding guide 42'. The connecting element 62 'is connected to the middle shaft 213' by a shaft pin, which slides along the guide rail 43 'of the chassis 4', to achieve the connection with the lifting bracket.

When the support frame needs to be unfolded, the output end of the driving device 3 extends out to drive the lifting support 2' to be unfolded, and further drive the connecting piece 62' to move, so that the connecting piece 62' drives the linkage rod 61' to move, the two ends of the linkage rod 61' push the support rods 5' respectively connected with the linkage rod, the shaft pins at the two ends of the linkage rod 61' slide in the sliding tracks 51' of the support rods 5', and the two support rods 5' are pushed to simultaneously swing and extend out of the chassis 4'. When the lifting bracket 2' is completely unfolded, the bearing platform 1' is lifted to the highest position, and the support rod 5' completely extends out of the chassis 4' and supports the chassis 4'. The ends of the two support rods 5' close to each other are arranged in a partially overlapping manner. When folding is needed, only the driving device 3 'needs to be started again to enable the output end of the driving device 3' to contract, so that the bearing platform 1 'can be driven to approach the chassis 4' and the supporting rod 5 'is driven to swing and contract into the chassis 4'. The effect produced by this embodiment is substantially the same as that of the first embodiment, and the description is not repeated here.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims (15)

1. A lifting platform, its characterized in that: the lifting device comprises a bearing platform, a lifting support, a driving device, a chassis, a support rod and a linkage mechanism, wherein the lifting support is arranged on the chassis, the bearing platform is arranged on the lifting support, the support rod is arranged on the chassis, and the linkage mechanism is arranged between the lifting support and the support rod; the driving device is arranged on the chassis and can drive the lifting support to be unfolded or folded; the lifting support drives the bearing platform to be far away from the chassis and drives the supporting rod to be unfolded through the linkage mechanism, or drives the bearing platform to be close to the chassis and drives the supporting rod to be folded through the linkage mechanism.

2. The lift platform of claim 1, wherein: the supporting rod can extend out of the chassis when being unfolded and can be retracted into the chassis when being folded.

3. The lift platform of claim 1, wherein: the supporting rod is arranged on the chassis in a sliding manner.

4. The elevating platform as set forth in any one of claims 1 to 3, wherein: the linkage mechanism comprises a linkage rod, one end of the linkage rod is pivoted to the supporting rod, and the other end of the linkage rod is pivoted to the lifting support.

5. The lift platform of claim 4, wherein: the linkage mechanism further comprises a connecting piece, the other end of the linkage rod is pivoted to the connecting piece, and the connecting piece is connected to the lifting support.

6. The lift platform of claim 1, wherein: the chassis is provided with a guide rail, the upper end of the lifting support is provided with a center shaft, the center shaft can be arranged on the chassis along the guide rail in a sliding manner, and the linkage mechanism is connected to the center shaft.

7. The lift platform of claim 1, wherein: the lifting support comprises at least one group of scissor arm mechanisms, each scissor arm mechanism comprises a first supporting arm and a second supporting arm, one end of each first supporting arm close to the chassis is pivoted with the chassis, and one end of each second supporting arm close to the chassis is arranged on the chassis in a sliding manner; one of the first support arm and the second support arm close to the bearing platform is pivoted on the bearing platform, and the other one is arranged on the lifting platform in a sliding manner.

8. The lift platform of claim 7, wherein: the inner side of the chassis is provided with a sliding guide rail, one end of the second support arm close to the chassis is provided with a middle shaft, and the end part of the middle shaft is arranged on the sliding guide rail in a sliding manner.

9. The lift platform of claim 7, wherein: the driving device is a telescopic driver, one end of the driving device is pivoted with the chassis, and the other end of the driving device is pivoted with any one of the first supporting arm, the second supporting arm and the bearing platform.

10. The lift platform of claim 3, wherein: the chassis is provided with a guide sleeve, and the support rod is sleeved on the guide sleeve in a sliding manner.

11. The lift platform of claim 1, wherein: the supporting rod is arranged on the chassis in a swinging mode.

12. The lift platform of claim 11, wherein: the linkage mechanism comprises a linkage rod, the linkage rod is connected to the lifting support, one end of the linkage rod is slidably arranged on the supporting rod, and the middle of the supporting rod is pivoted to the chassis.

13. The lift platform of claim 12, wherein: one of the supporting rod and the linkage rod is provided with a sliding track, and the other one of the supporting rod and the linkage rod is arranged on the sliding track in a sliding manner through a shaft pin.

14. The lift platform of claim 12, wherein: the linkage mechanism further comprises a connecting piece, the linkage rod is fixed on the connecting piece, and the connecting piece is connected to the lifting support.

15. The lift platform of claim 1, wherein: the chassis and the support rod are provided with rollers.

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