Liftable plate type mechanism

Abstract

The utility model provides a liftable plate type mechanism, and belongs to the technical field of mechanical mechanisms. Comprising a lifting plate, a bottom plate, four connecting pieces, four rod pieces and a lifting assembly. The first connecting piece is fixedly connected to one end of the lifting plate, the second connecting piece is fixedly connected to one end of the bottom plate, and one end of the lifting plate corresponds to one end of the bottom plate; the third connecting piece and the fourth connecting piece are arranged between the lifting plate and the bottom plate and correspond to each other in position; one ends of the first rod piece and the fourth rod piece are hinged to the first connecting piece, the other ends of the first rod piece and the fourth rod piece are hinged to the fourth connecting piece, one ends of the second rod piece and the third rod piece are hinged to the second connecting piece, the other ends of the second rod piece and the third rod piece are hinged to the third connecting piece, the first rod piece and the second rod piece are hinged to each other, and the third rod piece and the fourth rod piece are hinged to each other; the lifting assembly is arranged between the lifting plate and the bottom plate, and when the lifting assembly acts, the lifting plate is controlled by the lifting assembly to ascend and descend. Stable and accurate lifting of the plate type mechanism can be achieved through the lifting assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical structures, in particular to a lifting plate-type mechanism. Background Art

[0002] Most of the existing aerospace thermal vacuum test system product test cold plates are push-pull type, which can only move horizontally, but cannot adjust the height vertically. However, the test of some aerospace waveguide antenna products requires that the waveguide cable cannot be bent significantly. To this end, it is necessary to ensure that the product's waveguide cable passes horizontally from the center of the test hole on both sides of the thermal vacuum tank. Then, it is necessary to adjust the height between the product's waveguide cable and the test hole so that the waveguide cable and the center of the test hole are on the same horizontal plane, but the existing cold plates cannot meet this requirement. Utility Model Content

[0003] In view of this, the utility model provides a liftable plate-type mechanism, which can achieve stable and precise lifting of the plate-type mechanism through a lifting component, thereby being more suitable for practical use.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the liftable plate mechanism provided by the utility model is as follows:

[0005] The utility model provides a liftable plate-type mechanism comprising a lift plate (1), a bottom plate (2), a first connecting member (12), a second connecting member (13), a third connecting member (32), a fourth connecting member (33), a first rod (3), a second rod (4), a third rod (7), a fourth rod (8), and a lift assembly.

[0006] The first connecting member (12) is fixedly connected to one end of the lifting plate (1), and the second connecting member (13) is fixedly connected to one end of the bottom plate (2), and one end of the lifting plate (1) corresponds to one end of the bottom plate (2);

[0007] The third connecting member (32) and the fourth connecting member (33) are arranged between the lifting plate (1) and the bottom plate (2), and the positions of the third connecting member (32) and the fourth connecting member (33) correspond to each other;

[0008] One end of the first rod (3) and the fourth rod (8) is hinged to the first connecting member (12), and the other end of the first rod (3) and the fourth rod (8) is hinged to the fourth connecting member (33).

[0009] One end of the second rod (4) and the third rod (7) is hinged to the second connecting member (13), and the other end of the second rod (4) and the third rod (7) is hinged to the third connecting member (32).

[0010] The first rod (3) and the second rod (4) are hinged at the middle of each other, and the third rod (7) and the fourth rod (8) are hinged at the middle of each other;

[0011] The lifting component is arranged between the lifting plate (1) and the bottom plate (2), so that when the lifting component is in motion, the lifting plate (1) is controlled to be lifted or lowered by the lifting component.

[0012] The liftable plate-type mechanism provided by the utility model can also be further implemented by adopting the following technical measures.

[0013] Preferably, the lifting assembly includes a worm assembly, a worm wheel assembly, and a support assembly.

[0014] The support assembly is arranged between the lifting plate (1) and the bottom plate (2), and the support assembly is provided with a first through hole group that is aligned with each other;

[0015] The bottom plate (2) is provided with a second through hole;

[0016] The worm assembly includes a first meshing portion (35) and a first spindle, and the worm wheel assembly includes a second meshing portion (34) and a second spindle (41);

[0017] The first meshing portion (35) and the second meshing portion (34) mesh with each other to form a worm gear assembly, the first core shaft is inserted into the first through hole group, and the second core shaft (41) is inserted into the second through hole, so that the rotational motion of the first core shaft is converted into the lifting motion of the second meshing portion (34).

[0018] Preferably, the liftable plate mechanism further comprises a support member (16), wherein the support member is provided with a third through hole.

[0019] The third through hole is aligned with the first through hole group, so that the first core shaft is simultaneously passed through the third through hole.

[0020] Preferably, the liftable plate mechanism further comprises a rotary power driver, and an output shaft of the rotary power driver is fixedly connected to the first core shaft.

[0021] Preferably, the liftable plate mechanism further comprises a hand wheel (10) and a handle (11).

[0022] The hand wheel (10) is centrally fixedly connected to the first mandrel, and the diameter of the hand wheel (10) is larger than the diameter of the first mandrel.

[0023] One end of the handle (11) is fixedly connected to the rim of the hand wheel (10), and the other end of the handle (11) forms a first free end.

[0024] Preferably, the support assembly comprises a first support plate (23), a second support plate (25), a fifth connecting member (22) and a sixth connecting member (26).

[0025] The first support plate (23) and the second support plate (25) are provided with first through hole groups aligned with each other.

[0026] One side of the sixth connecting member (26) is fixedly connected to the bottom plate (2),

[0027] One end of the first supporting plate (23) is fixedly connected to the sixth connecting member (26), and the other end of the first supporting plate (23) is fixedly connected to the fifth connecting member (22); one end of the second supporting plate (25) is fixedly connected to the sixth connecting member (26), and the other end of the second supporting plate (25) is fixedly connected to the fifth connecting member (22), so that an accommodating space is formed among the first supporting plate (23), the second supporting plate (25), the fifth connecting member (22) and the sixth connecting member (26), and the first meshing portion (35) and the second meshing portion (34) are arranged in the accommodating space.

[0028] Preferably, the liftable plate mechanism further comprises a supporting member (21) and a flange.

[0029] The fifth connecting member (22) is provided with a fourth through hole,

[0030] The flange is centrally arranged on the second engaging portion (34), and the flange is matched with the fourth through hole.

[0031] The flange is provided with a second free end (45), the second engaging portion (34) is connected to the supporting member (21) by means of the second free end (45), and the lifting plate (1) is fixedly connected to the supporting member (21).

[0032] Preferably, the first core shaft is a stepped shaft, and is limited by the stepped shape of the stepped shaft and the matching piece.

[0033] Preferably, the liftable plate mechanism further comprises a first adjustment component, a second adjustment component, a third adjustment component and a fourth adjustment component.

[0034] The first adjustment component comprises a first adjustment block (19) and a second adjustment block (30), the second adjustment component comprises a third adjustment block (20) and a fourth adjustment block (31), the third adjustment component comprises a fifth adjustment block (46) and a sixth adjustment block (27), the fourth adjustment component comprises a seventh adjustment block (29) and an eighth adjustment block (28),

[0035] A guide rail pair is formed between the first adjustment block (19) and the second adjustment block (30), between the third adjustment block (20) and the fourth adjustment block (31), between the fifth adjustment block (46) and the sixth adjustment block (27), and between the seventh adjustment block (29) and the eighth adjustment block (28);

[0036] The first adjustment block (19) and the third adjustment block (20) are respectively fixedly connected to the lifting plate (1), and the sixth adjustment block (27) and the eighth adjustment block (28) are respectively fixedly connected to the bottom plate (2).

[0037] As a preference,

[0038] The third connecting member (32) is provided with a first groove and a second groove,

[0039] The fourth connecting member (33) is provided with a third groove and a fourth groove.

[0040] The second adjustment block (30) is fixedly connected to the first groove, and the fourth adjustment block (31) is fixedly connected to the second groove.

[0041] The seventh adjustment block (29) is fixedly connected to the third groove, and the fifth adjustment block (46) is fixedly connected to the fourth groove.

[0042] The lifting plate mechanism provided by the utility model utilizes the connection and hinge between four rods and four connecting members to realize the connection between the lifting plate 1 and the bottom plate 2. In this case, when the lifting mechanism is lifted and lowered under the action of the prime mover, the lifting plate 1 can be lifted and lowered with the lifting mechanism under the joint action of the four rods and four connecting members while the bottom plate 2 is fixed. The structure is simple, and the lifting and lowering control of the lifting plate 1 is stable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0044] Attached Figure 1 A schematic diagram of the three-dimensional structure of the liftable plate-type mechanism provided by an embodiment of the utility model at a first typical viewing angle;

[0045] Attached Figure 2 A schematic diagram of the three-dimensional structure of the liftable plate-type mechanism provided by an embodiment of the utility model at a second typical viewing angle;

[0046] Attached Figure 3 A schematic diagram of the three-dimensional structure of the liftable plate-type mechanism provided by an embodiment of the utility model at a third typical viewing angle;

[0047] Attached Figure 4 A schematic diagram of the three-dimensional structure of the liftable plate type mechanism provided by an embodiment of the utility model at a fourth typical viewing angle (wherein the lift plate is removed);

[0048] Attached Figure 5 For the attached Figure 4 A schematic diagram of the three-dimensional structure of the liftable plate-type mechanism provided after further disassembly of some components based on the schematic diagram of the three-dimensional structure at the fourth typical viewing angle;

[0049] Attached Figure 6 For the attached Figure 5 A schematic diagram of the three-dimensional structure of the liftable plate-type mechanism provided after further disassembly of some components based on the schematic diagram of the three-dimensional structure at the fourth typical viewing angle;

[0050] Attached Figure 7 For the attached Figure 6 A schematic diagram of the three-dimensional structure of the liftable plate-type mechanism provided after further disassembly of some components based on the schematic diagram of the three-dimensional structure at the fourth typical viewing angle;

[0051] Attached Figure 8 A schematic diagram of a three-dimensional structure of a worm gear assembly in a typical direction used in a liftable plate-type mechanism provided in an embodiment of the utility model;

[0052] Attached Fig. 9 For attachment Figure 8 Schematic diagram in the M direction;

[0053] Attached Fig.10 For attachment Fig. 9 AA section view. DETAILED DESCRIPTION

[0054] In view of this, the utility model provides a liftable plate-type mechanism, which can achieve stable and precise lifting of the plate-type mechanism through a lifting component, thereby being more suitable for practical use.

[0055] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the following is a detailed description of a lifting plate mechanism proposed according to the utility model, its specific implementation method, structure, features and effects, in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0056] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B. Specifically, it is understood that: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may be met.

[0057] See attached Figure 1 -Attached Fig.10 The liftable plate type mechanism provided by the utility model comprises a lift plate 1, a bottom plate 2, a first connecting member 12, a second connecting member 13, a third connecting member 32, a fourth connecting member 33, a first rod 3, a second rod 4, a third rod 7, a fourth rod 8, and a lift assembly. The first connecting member 12 is fixedly connected to one end of the lift plate 1, the second connecting member 13 is fixedly connected to one end of the bottom plate 2, and one end of the lift plate 1 corresponds to one end of the bottom plate 2. The third connecting member 32 and the fourth connecting member 33 are arranged between the lift plate 1 and the bottom plate 2, and the positions of the third connecting member 32 and the fourth connecting member 33 correspond. One end of the first rod 3 and the fourth rod 8 is hinged to the first connecting member 12, and the other end of the first rod 3 and the fourth rod 8 is hinged to the fourth connecting member 33. One end of the second rod 4 and the third rod 7 is hinged to the second connecting member 13, and the other end of the second rod 4 and the third rod 7 is hinged to the third connecting member 32. The first rod 3 and the second rod 4 are hinged at the middle of each other, and the third rod 7 and the fourth rod 8 are hinged at the middle of each other. The lifting assembly is arranged between the lifting plate 1 and the bottom plate 2, so that when the lifting assembly is in motion, the lifting plate 1 is controlled to rise and fall by the lifting assembly.

[0058] The lifting plate mechanism provided by the embodiment of the utility model utilizes the connection and hinge between four rods and four connecting members to realize the connection between the lifting plate 1 and the bottom plate 2. In this case, when the lifting mechanism is lifted and lowered under the action of the prime mover, the lifting plate 1 can be lifted and lowered with the lifting mechanism under the joint action of the four rods and four connecting members while the bottom plate 2 is fixed. The structure is simple, and the lifting and lowering control of the lifting plate 1 is stable and precise.

[0059] The lifting assembly includes a worm assembly, a worm wheel assembly, and a support assembly. The support assembly is arranged between the lifting plate 1 and the base plate 2, and the support assembly is provided with a first through hole group that is aligned with each other. A second through hole is provided on the base plate 2. The worm assembly includes a first meshing portion 35 and a first mandrel, and the worm wheel assembly includes a second meshing portion 34 and a second mandrel 41. The first meshing portion 35 and the second meshing portion 34 are meshed to form a worm wheel assembly, the first mandrel is penetrated through the first through hole group, and the second mandrel 41 is penetrated through the second through hole, so that when the rotational motion of the first mandrel is converted into the lifting motion of the second meshing portion 34. In this case, the rotational power is input into the first mandrel of the worm assembly, and the rotational motion of the worm assembly can be converted into the lifting motion of the second meshing portion 34 through the meshing between the first meshing portion 35 and the second meshing portion 34, so that the lifting action of the lifting plate 1 can be realized, and the structure is simple, the cost is low, and it is easy to realize.

[0060] Among them, the liftable plate mechanism also includes a support member 16, and a third through hole is provided on the support member. The third through hole is aligned with the first through hole group, so that the first mandrel is simultaneously passed through the third through hole. In this case, the first mandrel of the worm assembly can be supported by the support member 16, and the supporting effect is more stable. In this embodiment, a bearing is also provided between the first mandrel and the support member 16 and the supporting assembly. In this case, the first mandrel can move more smoothly and labor-savingly during the process of being input into the rotary power prime mover.

[0061] The liftable plate mechanism further comprises a rotary power driver, the output shaft of which is fixedly connected to the first mandrel. In this case, rotary power can be input to the first mandrel through the rotary power driver, which makes the operation more labor-saving. In this embodiment, the rotary power driver is a rotary motor.

[0062] The lifting plate mechanism further includes a handwheel 10 and a handle 11. The handwheel 10 is centrally fixedly connected to the first spindle, the diameter of the handwheel 10 is larger than the diameter of the first spindle, one end of the handle 11 is fixedly connected to the rim of the handwheel 10, and the other end of the handle 11 forms a first free end. In this case, especially when the lifting frequency of the lifting plate 1 is low, applying rotational power to the first spindle through the handwheel 10 and the handle 11 can save costs, wherein the diameter of the handwheel 10 is larger than the diameter of the first spindle, so that the length of the lever arm can be increased, so that when the torque remains unchanged, the required force is smaller, and therefore, the lifting and lowering operation process of the lifting plate 1 is more labor-saving.

[0063] The support assembly includes a first support plate 23, a second support plate 25, a fifth connecting member 22 and a sixth connecting member 26. The first support plate 23 and the second support plate 25 are provided with mutually aligned first through hole groups, one side of the sixth connecting member 26 is fixedly connected to the bottom plate 2, one end of the first support plate 23 is fixedly connected to the sixth connecting member 26, and the other end of the first support plate 23 is fixedly connected to the fifth connecting member 22; one end of the second support plate 25 is fixedly connected to the sixth connecting member 26, and the other end of the second support plate 25 is fixedly connected to the fifth connecting member 22, so that an accommodation space is formed between the first support plate 23, the second support plate 25, the fifth connecting member 22 and the sixth connecting member 26, and the first meshing portion 35 and the second meshing portion 34 are arranged in the accommodation space. In this case, the action range of the worm gear assembly can be limited and protected, so that the service life of the lifting plate mechanism provided by the embodiment of the utility model can be improved.

[0064] The liftable plate mechanism further includes a supporting member 21 and a flange. A fourth through hole is provided on the fifth connecting member 22, and the flange is centrally arranged on the second meshing portion 34, and the flange is adapted to the fourth through hole, and a second free end 45 is provided on the flange. The second meshing portion 34 is connected to the supporting member 21 by the second free end 45, and the lift plate 1 is fixedly connected to the supporting member 21. In this case, in the process of applying a force to the lift plate 1, the area of ​​the action point is larger, so the lifting action of the lift plate 1 is more stable.

[0065] The first mandrel is a stepped shaft, and the stepped shape of the stepped shaft and the matching piece are used to limit the position. In this embodiment, the first mandrel includes a first section shaft 9, a second section shaft 42, a third section shaft 36, a fourth section shaft 43 and a fourth section shaft 44, wherein the first mandrel and the matching piece matched with the first mandrel can be limited by changing the diameter of each section shaft, and the structure is simple, easy to implement and low cost.

[0066] Wherein, the liftable plate type mechanism also includes a first adjustment component, a second adjustment component, a third adjustment component and a fourth adjustment component. The first adjustment component includes a first adjustment block 19 and a second adjustment block 30, the second adjustment component includes a third adjustment block 20 and a fourth adjustment block 31, the third adjustment component includes a fifth adjustment block 46 and a sixth adjustment block 27, and the fourth adjustment component includes a seventh adjustment block 29 and an eighth adjustment block 28. A guide rail pair is formed between the first adjustment block 19 and the second adjustment block 30, between the third adjustment block 20 and the fourth adjustment block 31, between the fifth adjustment block 46 and the sixth adjustment block 27, and between the seventh adjustment block 29 and the eighth adjustment block 28. The first adjustment block 19 and the third adjustment block 20 are respectively fixedly connected to the lift plate 1, and the sixth adjustment block 27 and the eighth adjustment block 28 are respectively fixedly connected to the bottom plate 2. In this case, through the four groups of adjustment components, the displacement of the lift plate 1 during the action process can be limited, so that the lifting process of the lift plate 1 of the liftable plate type mechanism provided by the embodiment of the utility model is more accurate and stable.

[0067] Among them, the third connecting member 32 is provided with a first groove and a second groove, the fourth connecting member 33 is provided with a third groove and a fourth groove, the second adjusting block 30 is fixedly connected to the first groove, the fourth adjusting block 31 is fixedly connected to the second groove, the seventh adjusting block 29 is fixedly connected to the third groove, and the fifth adjusting block 46 is fixedly connected to the fourth groove. In this case, the structure of the lifting plate mechanism provided by the embodiment of the utility model is more compact, the modularization degree is higher, and the operation is simpler and more convenient.

[0068] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0069] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A liftable plate mechanism, characterized in that: The invention comprises a lifting plate (1), a bottom plate (2), a first connecting member (12), a second connecting member (13), a third connecting member (32), a fourth connecting member (33), a first rod (3), a second rod (4), a third rod (7), a fourth rod (8), and a lifting assembly. The first connecting member (12) is fixedly connected to one end of the lifting plate (1), and the second connecting member (13) is fixedly connected to one end of the bottom plate (2), and one end of the lifting plate (1) corresponds to one end of the bottom plate (2); The third connecting member (32) and the fourth connecting member (33) are arranged between the lifting plate (1) and the bottom plate (2), and the positions of the third connecting member (32) and the fourth connecting member (33) correspond to each other; One end of the first rod (3) and the fourth rod (8) is hinged to the first connecting member (12), and the other end of the first rod (3) and the fourth rod (8) is hinged to the fourth connecting member (33). One end of the second rod (4) and the third rod (7) is hinged to the second connecting member (13), and the other end of the second rod (4) and the third rod (7) is hinged to the third connecting member (32). The first rod (3) and the second rod (4) are hinged at the middle of each other, and the third rod (7) and the fourth rod (8) are hinged at the middle of each other; The lifting component is arranged between the lifting plate (1) and the bottom plate (2), so that when the lifting component is in motion, the lifting plate (1) is controlled to be lifted or lowered by the lifting component.

2. The liftable plate mechanism according to claim 1, characterized in that: The lifting assembly includes a worm assembly, a worm wheel assembly, and a supporting assembly. The support assembly is arranged between the lifting plate (1) and the bottom plate (2), and the support assembly is provided with a first through hole group that is aligned with each other; The bottom plate (2) is provided with a second through hole; The worm assembly includes a first meshing portion (35) and a first spindle, and the worm wheel assembly includes a second meshing portion (34) and a second spindle (41); The first meshing portion (35) and the second meshing portion (34) mesh with each other to form a worm gear assembly, the first core shaft is inserted into the first through hole group, and the second core shaft (41) is inserted into the second through hole, so that the rotational motion of the first core shaft is converted into the lifting motion of the second meshing portion (34).

3. The liftable plate mechanism according to claim 2, characterized in that: It also includes a support member (16), wherein the support member is provided with a third through hole. The third through hole is aligned with the first through hole group, so that the first core shaft is simultaneously passed through the third through hole.

4. The liftable plate mechanism according to claim 2, characterized in that: It also includes a rotating power driver, and the output shaft of the rotating power driver is fixedly connected to the first core shaft.

5. The liftable plate mechanism according to claim 2, characterized in that: It also includes a hand wheel (10) and a handle (11), The hand wheel (10) is centrally fixedly connected to the first mandrel, and the diameter of the hand wheel (10) is larger than the diameter of the first mandrel. One end of the handle (11) is fixedly connected to the rim of the hand wheel (10), and the other end of the handle (11) forms a first free end.

6. The liftable plate mechanism according to claim 2, characterized in that: The support assembly comprises a first support plate (23), a second support plate (25), a fifth connecting member (22) and a sixth connecting member (26), The first support plate (23) and the second support plate (25) are provided with first through hole groups aligned with each other. One side of the sixth connecting member (26) is fixedly connected to the bottom plate (2), One end of the first supporting plate (23) is fixedly connected to the sixth connecting member (26), and the other end of the first supporting plate (23) is fixedly connected to the fifth connecting member (22); one end of the second supporting plate (25) is fixedly connected to the sixth connecting member (26), and the other end of the second supporting plate (25) is fixedly connected to the fifth connecting member (22), so that an accommodating space is formed among the first supporting plate (23), the second supporting plate (25), the fifth connecting member (22) and the sixth connecting member (26), and the first meshing portion (35) and the second meshing portion (34) are arranged in the accommodating space.

7. The liftable plate mechanism according to claim 6, characterized in that: It also includes a supporting member (21) and a flange, The fifth connecting member (22) is provided with a fourth through hole, The flange is centrally arranged on the second engaging portion (34), and the flange is matched with the fourth through hole. The flange is provided with a second free end (45), the second engaging portion (34) is connected to the supporting member (21) by means of the second free end (45), and the lifting plate (1) is fixedly connected to the supporting member (21).

8. The liftable plate mechanism according to claim 2, characterized in that: The first core shaft is a stepped shaft, and is limited by the stepped shape of the stepped shaft and the matching piece.

9. The liftable plate mechanism according to claim 1, characterized in that: Also includes a first adjustment component, a second adjustment component, a third adjustment component and a fourth adjustment component, The first adjustment component comprises a first adjustment block (19) and a second adjustment block (30), the second adjustment component comprises a third adjustment block (20) and a fourth adjustment block (31), the third adjustment component comprises a fifth adjustment block (46) and a sixth adjustment block (27), the fourth adjustment component comprises a seventh adjustment block (29) and an eighth adjustment block (28), A guide rail pair is formed between the first adjustment block (19) and the second adjustment block (30), between the third adjustment block (20) and the fourth adjustment block (31), between the fifth adjustment block (46) and the sixth adjustment block (27), and between the seventh adjustment block (29) and the eighth adjustment block (28); The first adjustment block (19) and the third adjustment block (20) are respectively fixedly connected to the lifting plate (1), and the sixth adjustment block (27) and the eighth adjustment block (28) are respectively fixedly connected to the bottom plate (2).

10. The liftable plate mechanism according to claim 9, characterized in that: The third connecting member (32) is provided with a first groove and a second groove, The fourth connecting member (33) is provided with a third groove and a fourth groove. The second adjustment block (30) is fixedly connected to the first groove, and the fourth adjustment block (31) is fixedly connected to the second groove. The seventh adjustment block (29) is fixedly connected to the third groove, and the fifth adjustment block (46) is fixedly connected to the fourth groove.

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