Lifting and supporting mechanism of heavy object showing stand

Abstract

The utility model discloses a lifting and supporting mechanism of a weight showing stand, which comprises a movable table, a first electric push rod, a scissor lifting table, a positioning cushion block, a first linear ratchet bar, a second electric push rod, a first connecting rod, a second connecting rod, a connecting plate, a ratchet bar seat and a second linear ratchet bar, and an execution rod of the electric push rod is fixedly connected with a bottom plate of the scissor lifting table. According to the lifting and supporting mechanism of the heavy object showing stand, heavy object products needing to be shown can be lifted twice, the overall height size of the showing stand after retraction can be reduced, an operator can conveniently lift the heavy object products and fix the heavy object products on the positioning cushion blocks of the top plate of the shear fork lifting table, and the positioning cushion blocks are of structures matched with the heavy object products; after the scissor-fork lifting table is jacked, the scissor-fork lifting table is limited and blocked through meshing of the second linear ratchet bar and the first linear ratchet bar, and the top plate of the scissor-fork lifting table and a heavy product can be prevented from moving downwards and falling off.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting and supporting, in particular to a lifting and supporting mechanism of a heavy object display rack. Background Art

[0002] The current heavy object display racks all adopt a fixed structure and cannot be lifted. In order to reduce the difficulty of carrying and fixing heavy objects (such as engines), the height of the heavy object display rack is usually set to 30-50cm. This kind of heavy object display rack requires exhibitors to bend over to observe, resulting in a poor observation experience for exhibitors. When the heavy objects are fixed by the traditional scissor lift mechanism and then raised to a height of 1-1.2m for display, since the traditional detection lifting mechanism does not have an anti-fall locking function, when the heavy objects are raised to a certain height for a long time for display, the load on the electric push rod of the scissor lift mechanism is large, which not only affects the service life of the electric push rod of the scissor lift mechanism, but also there is a safety hazard of falling if the electric push rod of the scissor lift mechanism is damaged. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a lifting support mechanism of a heavy object display rack with a locking and anti-falling function, which can reduce the load force of the third electric push rod of the scissor lift platform during long-term use.

[0004] In order to solve the above technical problems, the present invention is implemented through the following technical solutions: a lifting support mechanism for a heavy object display stand, comprising a mobile platform, a first electric push rod, a scissors lift platform, a positioning pad, a first linear ratchet bar, a second electric push rod, a first connecting rod, a second connecting rod, a connecting plate, a ratchet bar seat and a second linear ratchet bar, wherein the four corners of the lower part of the scissors lift platform are fixedly installed with guide rods, the guide rods are slidably installed on the mobile platform, the first electric push rod is fixedly installed on the mobile platform, the actuator rod of the electric push rod is fixedly connected to the bottom plate of the scissors lift platform, and the positioning pad is fixedly installed on the top of the scissors lift platform. On the plate, two first linear ratchet bars are symmetrically and fixedly mounted on the front and rear sides of the third electric push rod of the scissors-fork lifting platform, the second electric push rod is fixedly mounted on the upper part of the third electric push rod, the connecting plate is fixedly sleeved and mounted on the scissors-fork central axis of the scissors-fork lifting platform, the upper ends of the two ratchet bar seats are hingedly mounted on the connecting plate, the bottoms of the two ratchet bar seats are fixedly connected through the first central axis, the second linear ratchet bar is matched with the first linear ratchet bar and fixedly mounted on the lower part of the ratchet bar seat, the inner ends of the first connecting rod and the second connecting rod are hinged, and the outer ends of the first connecting rod and the second connecting rod are respectively hinged to the actuator rod of the second electric push rod and the first central axis.

[0005] Furthermore, the ratchet bar seat is configured as a 150°-160° bending structure.

[0006] Furthermore, an anti-collision rubber pad is fixedly embedded in the top of the positioning pad.

[0007] Furthermore, the front and rear sections of the positioning pad are both configured as bevel structures.

[0008] Compared with the prior art, the advantages of the present invention are as follows: the lifting support mechanism of the heavy object display stand can lift the heavy products to be displayed twice, and can reduce the overall height of the display stand after retraction, so that the operator can lift the heavy products and fix them on the positioning pads of the top plate of the scissors lift platform. The positioning pads adopt a structure compatible with the heavy products to achieve better positioning and load-bearing effects. After the scissors lift platform is lifted, the second linear ratchet bar is engaged with the first linear ratchet bar to limit and block it, so as to prevent the top plate of the scissors lift platform and the heavy products from moving down and falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings.

[0010] Figure 1 It is a stereogram of the utility model.

[0011] Figure 2 yes Figure 1 Enlarged structural diagram at M.

[0012] Figure 3 It is the front view of the utility model.

[0013] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at N. DETAILED DESCRIPTION

[0014] The utility model is described in detail below in conjunction with specific implementation methods:

[0015] like Figures 1 to 4The lifting support mechanism of a heavy object display stand shown in the figure comprises a moving platform 1, a first electric push rod 2, a scissor lift platform 3, a positioning pad 41, a first linear ratchet bar 7, a second electric push rod 8, a first connecting rod 81, a second connecting rod 82, a connecting plate 9, a ratchet bar seat 11 and a second linear ratchet bar 12, wherein the four corners of the lower part of the scissor lift platform 3 are fixedly installed with guide rods, and the guide rods are slidably installed on the moving platform 1, the first electric push rod 2 is fixedly installed on the moving platform 1, the actuator rod of the electric push rod 2 is fixedly connected to the bottom plate of the scissor lift platform 3, the positioning pad 41 is fixedly installed on the top plate 4 of the scissor lift platform 3, and the two first linear ratchet bars 7 are symmetrical. And it is fixedly installed on the front and rear sides of the third electric push rod 6 of the scissor lift platform 3, the second electric push rod 8 is fixedly installed on the upper part of the third electric push rod 6, the connecting plate 9 is fixedly sleeved on the scissor center axis 10 of the scissor lift platform 3, the upper ends of the two ratchet bar seats 11 are hingedly installed on the connecting plate 9, and the bottoms of the two ratchet bar seats 11 are fixedly connected through the first center axis 13, the second linear ratchet bar 12 is cooperated with the first linear ratchet bar 7 and fixedly installed on the lower part of the ratchet bar seat 11, the inner ends of the first connecting rod 81 and the second connecting rod 82 are hinged, and the outer ends of the first connecting rod 81 and the second connecting rod 82 are respectively hinged to the actuator rod of the second electric push rod 8 and the first center axis 13.

[0016] When the scissors-type middle axis 10 and the connecting plate 9 drive the ratchet bar seat 11, the ratchet bar seat 11 is set to a 154° bending structure, which can avoid the problem of the ratchet bar seat 11 getting stuck when rotating, and at the same time ensure that the second linear ratchet bar 12 is in a parallel state with the first linear ratchet bar 7 and can engage and limit.

[0017] An anti-collision rubber pad is fixedly embedded on the top of the positioning pad 41. Taking the displayed product as an engine as an example, it can prevent the engine from having a rigid collision with the positioning pad 41 and causing surface wear.

[0018] The front and rear sections of the positioning pad 41 are both configured as bevel structures to prevent the right-angled edges at both ends of the positioning pad 41 from causing scratches to exhibitors.

[0019] The heavy product to be displayed is lifted and fixed on the positioning pad 41 adapted thereto, and the scissor lift 3 together with the heavy product is pushed upward by the first electric push rod 2 to perform a height jacking, and the third electric push rod 6 is started to push the top plate 4 of the scissor lift 3 together with the heavy product upward. When the scissor lift 3 is lifted or lowered, the actuator rod of the second electric push rod 8 retracts, driving the ratchet bar seat 11 to rotate clockwise around the connecting plate 9 until the second linear ratchet bar 12 is separated from the first linear ratchet bar 7, releasing the limiting blocking effect on the first linear ratchet bar 7. After the height of the supporting mechanism is adjusted into place, the actuator rod of the second electric push rod 8 is extended and retracted, driving the ratchet bar seat 11 to rotate counterclockwise around the connecting plate 9 until the second linear ratchet bar 12 engages with the first linear ratchet bar 7 to limit and block it. When the scissors-type lifting platform 3 falls due to a malfunction, the actuator rod of the third electric push rod 6 of the scissors-type lifting platform 3 tends to retract, and is blocked by the contact limiting surface of the first linear ratchet bar 7 and the second linear ratchet bar 12 to prevent the actuator rod of the third electric push rod 6 from retracting, thereby preventing the top plate 4 of the scissors-type lifting platform 3 from moving down and falling together with the heavy products.

Claims

1. A lifting support mechanism for a heavy object display stand, characterized in that: The invention comprises a moving platform (1), a first electric push rod (2), a scissor lift platform (3), a positioning pad (41), a first linear ratchet bar (7), a second electric push rod (8), a first connecting rod (81), a second connecting rod (82), a connecting plate (9), a ratchet bar seat (11) and a second linear ratchet bar (12), wherein the four corners of the lower part of the scissor lift platform (3) are fixedly mounted with guide rods, the guide rods are slidably mounted on the moving platform (1), the first electric push rod (2) is fixedly mounted on the moving platform (1), the actuator rod of the electric push rod (2) is fixedly connected to the bottom plate of the scissor lift platform (3), the positioning pad (41) is fixedly mounted on the top plate of the scissor lift platform (3), and two first linear ratchet bars (7) are symmetrically and fixedly mounted on the scissor lift platform (3). The second electric push rod (8) is fixedly mounted on the upper part of the third electric push rod (6), the connecting plate (9) is fixedly sleeved and mounted on the scissor-type central axis (10) of the scissor-type lifting platform (3), the upper ends of the two ratchet bar seats (11) are hingedly mounted on the connecting plate (9), the bottoms of the two ratchet bar seats (11) are fixedly connected through the first central axis (13), the second linear ratchet bar (12) is arranged in coordination with the first linear ratchet bar (7) and is fixedly mounted on the lower part of the ratchet bar seat (11), the inner ends of the first connecting rod (81) and the second connecting rod (82) are hingedly mounted, and the outer ends of the first connecting rod (81) and the second connecting rod (82) are respectively hingedly mounted on the actuator rod of the second electric push rod (8) and the first central axis (13).

2. The lifting support mechanism of the heavy object display stand according to claim 1, characterized in that: The ratchet bar seat (11) is configured as a 150°-160° bending structure.

3. The lifting and supporting mechanism of the heavy object display stand according to claim 1, characterized in that: An anti-collision rubber pad is fixedly embedded and installed on the top of the positioning pad (41).

4. The lifting and supporting mechanism of the heavy object display stand according to claim 1, characterized in that: The front and rear sections of the positioning cushion block (41) are both configured as bevel structures.

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