Hand-cranking and electric dual-purpose lifting frame

Abstract

The utility model belongs to the field of lifting frames, and particularly relates to a hand-cranking and electric dual-purpose lifting frame. The utility model provides a hand-cranking and electric dual-purpose lifting frame. The hand-cranking and electric dual-purpose lifting frame comprises a base, a supporting table, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, an eighth connecting rod, a pull rod and a driving mechanism. And the driving mechanism is fixed on a hinged shaft of the second connecting rod and the fourth connecting rod, is provided with a nut meshed with the external thread, and is used for adjusting the distance between the first connecting shaft and the second connecting shaft by driving the nut to rotate. According to the hand-cranking and electric dual-purpose lifting frame, the supporting table can be designed to be large enough, the lifting requirement of large-size goods is met, meanwhile, the bearing capacity is improved, and lifting is more stable and smoother.

Description

Technical Field

[0001] The utility model belongs to the field of lifting frames, and particularly relates to a hand-crank and electric dual-purpose lifting frame. Background Art

[0002] The existing electric and manual dual-purpose jacks include a driving mechanism, a diamond-shaped bracket and a pull rod. The lower joint of the diamond-shaped bracket is fixed on the base, and the upper joint of the diamond-shaped bracket serves as the jacking point. The pull rod passes through the left and right joints of the diamond-shaped bracket. The driving mechanism drives the pull rod to pull the distance between the left and right joints of the diamond-shaped bracket to become larger or smaller, and then makes the distance between the upper and lower joints of the diamond-shaped bracket become smaller or larger to play a lifting role.

[0003] However, there are some limitations in the existing such jacks. For example, the bearing capacity is limited. For example, a wide platform cannot be installed at the jacking point, and large items such as motorcycles cannot be jacked up as a whole vehicle. Content of the Utility Model

[0004] A hand-crank and electric dual-purpose lifting frame provided by the utility model can effectively solve the problems in the background art.

[0005] A hand-crank and electric dual-purpose lifting frame provided by the utility model includes a base, a support platform, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, an eighth connecting rod, a pull rod and a driving mechanism;

[0006] The base is provided with a base chute;

[0007] The support platform is provided with a support platform chute;

[0008] The lower ends of the first connecting rod and the second connecting rod are hinged in the base chute. The first connecting rod and the second connecting rod form an inverted V shape. The upper ends of the first connecting rod and the second connecting rod are respectively hinged to the lower ends of the third connecting rod and the fourth connecting rod. The upper ends of the third connecting rod and the fourth connecting rod are both provided with rollers and are arranged in the support platform chute. The third connecting rod and the fourth connecting rod form a V shape;

[0009] The fifth connecting rod and the sixth connecting rod are respectively hinged to the first connecting rod and the second connecting rod in an X shape. The lower ends of the fifth connecting rod and the sixth connecting rod are both provided with rollers and are arranged in the base chute. The seventh connecting rod and the eighth connecting rod are respectively hinged to the third connecting rod and the fourth connecting rod in an X shape. The lower ends of the seventh connecting rod and the eighth connecting rod are respectively hinged to the upper ends of the fifth connecting rod and the sixth connecting rod. The upper ends of the seventh connecting rod and the eighth connecting rod are both provided with rollers and are arranged in the support platform chute;

[0010] One end of the pull rod is connected to the hinge axis of the first connecting rod and the third connecting rod, and the other end of the pull rod is provided with an external thread;

[0011] The driving mechanism is fixed on the hinge axis of the second connecting rod and the fourth connecting rod. The driving mechanism is provided with a nut engaging with the external thread, and the driving mechanism pulls the pull rod by driving the rotation of the nut.

[0012] As a further optimization of the present utility model, there are two base chutes with opposite openings; there are two support platform chutes with opposite openings; there are two sets of the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod, the fifth connecting rod, the sixth connecting rod, the seventh connecting rod and the eighth connecting rod;

[0013] The lower ends of the two sets of the first connecting rod and the second connecting rod are respectively hinged in the two base chutes; the rollers at the lower ends of the two sets of the third connecting rod and the fourth connecting rod are respectively arranged in the two base chutes; the rollers at the upper ends of the two sets of the fifth connecting rod, the sixth connecting rod, the seventh connecting rod and the eighth connecting rod are respectively arranged in the two support platform chutes.

[0014] As a further optimization of the present utility model, it further includes a first coupling shaft and a second coupling shaft; the two ends of the first coupling shaft are respectively used as the hinge axes of the two sets of the first connecting rod and the third connecting rod; the two ends of the second coupling shaft are respectively used as the hinge axes of the two sets of the second connecting rod and the fourth connecting rod.

[0015] As a further optimization of the present utility model, it further includes a third coupling shaft and a fourth coupling shaft; the two ends of the third coupling shaft are respectively used as the hinge axes of the two sets of the fifth connecting rod and the seventh connecting rod; the two ends of the fourth coupling shaft are respectively used as the hinge axes of the two sets of the sixth connecting rod and the eighth connecting rod.

[0016] As a further optimization of the present utility model, the pull rod passes through the second coupling shaft, the third coupling shaft and the fourth coupling shaft.

[0017] As a further optimization of the present utility model, the rollers and other hinge joints of the two sets of the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod, the fifth connecting rod, the sixth connecting rod, the seventh connecting rod and the eighth connecting rod are all provided with coupling shafts with both ends as hinge axes.

[0018] As a further optimization of the present utility model, the ends of the third connecting rod and the fourth connecting rod are not provided with rollers but are hinged in the support platform chute.

[0019] As a further optimization of the present utility model, the driving mechanism includes a gearbox; the output end of the gearbox is connected to the nut, and the input end of the gearbox is provided with a torsion sleeve or a torsion bar.

[0020] As a further optimization of the present utility model, the base is provided with a limiting portion for limiting the lower rollers of the fifth connecting rod or the sixth connecting rod.

[0021] A hand-crank and electric dual-use lifting frame provided by the present utility model can design the support platform to be large enough to meet the lifting requirements of large-volume goods, improve the bearing capacity at the same time, and make the lifting more stable and smooth. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of half of the structure of Embodiment 1;

[0023] Among them, there are a first connecting rod 1, a second connecting rod 2, a third connecting rod 3, a fourth connecting rod 4, a fifth connecting rod 5, a sixth connecting rod 6, a seventh connecting rod 7, an eighth connecting rod 8, a base 9, a base chute 9a, a support platform 10, a support platform chute 10a, a pull rod 11, a driving mechanism 12, a gearbox 12a, a mounting bracket 12b, a torsion sleeve 12c, a first coupling shaft 13, a third coupling shaft 14, and a fourth coupling shaft 15. Specific implementation manner

[0024] Embodiment 1

[0025] This embodiment includes a base 9 and a support platform 10. The base 9 is placed on the ground. Base chutes 9a with opposite openings are provided on both sides of the base 9, and the two base chutes 9a are parallel. The support platform 10 is provided above the base 9 and is parallel to the base 9. Support platform chutes 10a with opposite openings are also provided on both sides of the support platform 10. The two support platform chutes 10a are parallel, and the support platform chutes 10a are also parallel to the base chutes 9a.

[0026] It further includes a first connecting rod 1, a second connecting rod 2, a third connecting rod 3, a fourth connecting rod 4, a fifth connecting rod 5, a sixth connecting rod 6, a seventh connecting rod 7, an eighth connecting rod 8, a pull rod 11, and a driving mechanism 12.

[0027] In this embodiment, the first connecting rod 1, the second connecting rod 2, the third connecting rod 3, the fourth connecting rod 4, the fifth connecting rod 5, the sixth connecting rod 6, the seventh connecting rod 7, and the eighth connecting rod 8 are all of equal length, and two sets are provided opposite to each other in the front and back.

[0028] The lower ends of the first connecting rod 1 and the second connecting rod 2 in one set are hinged in one base chute 9a, and the lower ends of the first connecting rod 1 and the second connecting rod 2 in the other set are hinged in the other base chute 9a. The first connecting rod 1 and the second connecting rod 2 in each set form an inverted V shape.

[0029] The upper end of the first connecting rod 1 is hinged to the lower end of the third connecting rod 3, and the upper end of the second connecting rod 2 is hinged to the lower end of the fourth connecting rod 4.

[0030] Rollers are provided at the upper ends of the third connecting rod 3 and the fourth connecting rod 4. The rollers of the third connecting rod 3 and the fourth connecting rod 4 in one set are arranged in one support platform chute 10a, and the rollers of the third connecting rod 3 and the fourth connecting rod 4 in the other set are arranged in the other support platform chute 10a. The third connecting rod 3 and the fourth connecting rod 4 in each set form a V shape.

[0031] The fifth link 5 and the sixth link 6 are respectively hinged to the first link 1 and the second link 2 in an X shape. Rollers are provided at the lower ends of the fifth link 5 and the sixth link 6. The rollers of one set of the fifth link 5 and the sixth link 6 are arranged in a base chute 9a, and the rollers of the other set of the fifth link 5 and the sixth link 6 are arranged in another base chute 9a.

[0032] The seventh link 7 and the eighth link 8 are respectively hinged to the third link 3 and the fourth link 4 in an X shape. The lower ends of the seventh link 7 and the eighth link 8 are respectively hinged to the upper ends of the fifth link 5 and the sixth link 6. Rollers are provided at the upper ends of the seventh link 7 and the eighth link 8. The rollers of one set of the seventh link 7 and the eighth link 8 are arranged in a base chute 9a, and the rollers of the other set of the seventh link 7 and the eighth link 8 are arranged in another base chute 9a.

[0033] This embodiment includes a first coupling shaft 13 and a second coupling shaft. The two ends of the first coupling shaft 13 respectively serve as the hinge shafts of two groups of the first link 1 and the third link 3. Similarly, the two ends of the second coupling shaft respectively serve as the hinge shafts of two groups of the second link 2 and the fourth link 4.

[0034] This embodiment further includes a third coupling shaft 14 and a fourth coupling shaft 15. The two ends of the third coupling shaft 14 respectively serve as the hinge shafts of two groups of the fifth link 5 and the seventh link 7. The two ends of the fourth coupling shaft 15 respectively serve as the hinge shafts of two groups of the sixth link 6 and the eighth link 8.

[0035] Preferably, this embodiment also provides coupling shafts with both ends as hinge shafts at the rollers and other hinge joints of two groups of the first link 1, the second link 2, the third link 3, the fourth link 4, the fifth link 5, the sixth link 6, the seventh link 7 and the eighth link 8 to improve its stability.

[0036] One end of the pull rod 11 sequentially passes through the second coupling shaft, the fourth coupling shaft 15 and the third coupling shaft 14 and then is connected to the first coupling shaft 13. The other end of the pull rod 11 is provided with an external thread.

[0037] The driving mechanism 12 includes a nut, a gearbox 12a and a mounting bracket 12b. The output end of the gearbox 12a is connected to the nut and can drive the nut to rotate. The nut is sleeved on the pull rod 11 and meshes with the external thread. The gearbox 12a is fixed on the mounting bracket 12b, and the mounting bracket 12b is fixed on the second coupling shaft.

[0038] The input end of the transmission 12a is provided with a torsion sleeve 12c. In other embodiments, the torsion sleeve 12c can also be replaced by a torsion bar. The torsion sleeve 12c can be driven to rotate by a hand drill or a wrench. The rotation of the torsion sleeve 12c drives the gears inside the transmission 12a to rotate, and then drives the lead nut to rotate. The rotation of the lead nut can pull the pull rod 11, and the pull rod 11 pulls the first coupling shaft 13, causing the distance between the first coupling shaft 13 and the second coupling shaft to change. When the distance between the first coupling shaft 13 and the second coupling shaft becomes larger, the support table 10 descends. When the distance between the first coupling shaft 13 and the second coupling shaft becomes smaller, the support table 10 ascends.

[0039] In this embodiment, the first connecting rod 1, the second connecting rod 2, the third connecting rod 3, the fourth connecting rod 4, the fifth connecting rod 5, the sixth connecting rod 6, the seventh connecting rod 7 and the eighth connecting rod 8 form two sets of fork arm type lifting structures, so that a larger load can be carried. The upper ends of the third connecting rod 3, the fourth connecting rod 4, the seventh connecting rod 7 and the eighth connecting rod 8 constitute four support points, and two sets can constitute eight support points, which makes the support area of the support table 10 larger and can carry a larger area of load. In addition, a total of twelve rollers are provided in this embodiment, and these rollers make the resistance of the support table 10 smaller during the lifting process, the lifting is more relaxed, and there will be no jamming situation.

[0040] Preferably, this embodiment also provides a limiting portion on the base 9 to limit the lower rollers of the fifth connecting rod 5 or the sixth connecting rod 6, so as to play a role in limiting the lifting height of the support table 10.

[0041] Embodiment 2

[0042] This embodiment is basically the same as Embodiment 1, except that in this embodiment, the ends of the third connecting rod 3 and the fourth connecting rod 4 are not provided with rollers but are hinged in the support table chute 10a.

[0043] Embodiment 3

[0044] This embodiment is basically the same as Embodiment 1, except that only one set of the first connecting rod 1, the second connecting rod 2, the third connecting rod 3, the fourth connecting rod 4, the fifth connecting rod 5, the sixth connecting rod 6, the seventh connecting rod 7 and the eighth connecting rod 8 is provided.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention. The orientation words such as up, down, left, right, front, back, bottom, top, etc. described in this application are only for better explaining this application, rather than aiming to limit the scope of this application.

Claims

1. A hand-cranked and electric dual-purpose lifting frame, characterized in that: It includes a base, a support platform, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, an eighth connecting rod, a pull rod and a driving mechanism; The base is provided with a base slide; The support platform is provided with a support platform slideway; The lower ends of the first connecting rod and the second connecting rod are hinged in the base slide groove, the first connecting rod and the second connecting rod form an inverted eight-shaped shape, and the upper ends of the first connecting rod and the second connecting rod are hinged to the lower ends of the third connecting rod and the fourth connecting rod respectively; the upper ends of the third connecting rod and the fourth connecting rod are both provided with rollers and are arranged in the support platform slide groove, and the third connecting rod and the fourth connecting rod form an eight-shaped shape; The fifth connecting rod and the sixth connecting rod are respectively hinged to the first connecting rod and the second connecting rod in an X shape, and the lower ends of the fifth connecting rod and the sixth connecting rod are both provided with rollers and are arranged in the base slide groove; the seventh connecting rod and the eighth connecting rod are respectively hinged to the third connecting rod and the fourth connecting rod in an X shape, and the lower ends of the seventh connecting rod and the eighth connecting rod are respectively hinged to the upper ends of the fifth connecting rod and the sixth connecting rod, and the upper ends of the seventh connecting rod and the eighth connecting rod are both provided with rollers and are arranged in the support platform slide groove; One end of the pull rod is connected to the hinge shaft of the first connecting rod and the third connecting rod, and the other end of the pull rod is provided with an external thread; The driving mechanism is fixed on the hinge shaft of the second connecting rod and the fourth connecting rod. The driving mechanism is provided with a nut meshed with the external thread. The driving mechanism rotates and pulls the pull rod by driving the nut.

2. A manual and electric dual-purpose lifting frame according to claim 1, characterized in that: The base has two slide grooves and the openings are opposite to each other; the support platform has two slide grooves and the openings are opposite to each other; the first connecting rod, the second connecting rod, the third connecting rod, the fourth connecting rod, the fifth connecting rod, the sixth connecting rod, the seventh connecting rod and the eighth connecting rod are provided in two groups; The lower ends of the two groups of first connecting rods and second connecting rods are respectively hinged in the two base slide grooves; the rollers at the lower ends of the two groups of third connecting rods and fourth connecting rods are respectively arranged in the two base slide grooves; the rollers at the upper ends of the two groups of fifth connecting rods, sixth connecting rods, seventh connecting rods and eighth connecting rods are respectively arranged in the two support platform slide grooves.

3. A manual and electric dual-purpose lifting frame according to claim 2, characterized in that: It also includes a first connecting shaft and a second connecting shaft; the two ends of the first connecting shaft are respectively used as hinge shafts for two groups of first connecting rods and a third connecting rod; the two ends of the second connecting shaft are respectively used as hinge shafts for two groups of second connecting rods and a fourth connecting rod.

4. The hand-cranked and electric dual-purpose lifting frame according to claim 3 is characterized in that: It also includes a third connecting shaft and a fourth connecting shaft; the two ends of the third connecting shaft are respectively used as the hinge shafts of two groups of fifth connecting rods and seventh connecting rods; the two ends of the fourth connecting shaft are respectively used as the hinge shafts of two groups of sixth connecting rods and eighth connecting rods.

5. The hand-cranked and electric dual-purpose lifting frame according to claim 4, characterized in that: The pull rod passes through the second coupling shaft, the third coupling shaft and the fourth coupling shaft.

6. The hand-cranked and electric dual-purpose lifting frame according to claim 5, characterized in that: The rollers and other hinged parts of the two groups of first connecting rods, second connecting rods, third connecting rods, fourth connecting rods, fifth connecting rods, sixth connecting rods, seventh connecting rods and eighth connecting rods are all provided with connecting shafts with both ends serving as hinge shafts.

7. The hand-cranked and electric dual-purpose lifting frame according to claim 1, characterized in that: The ends of the third connecting rod and the fourth connecting rod are not provided with rollers but are hinged in the slide groove of the supporting platform.

8. The hand-cranked and electric dual-purpose lifting frame according to claim 1, characterized in that: The driving mechanism comprises a gear transmission case; the output end of the gear transmission case is connected to a nut, and the input end of the gear transmission case is provided with a torsion sleeve or a torsion bar.

9. The hand-cranked and electric dual-purpose lifting frame according to claim 1, characterized in that: The base is provided with a limiting portion for limiting the roller at the lower end of the fifth connecting rod or the sixth connecting rod.

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