A lifting lecture platform

Abstract

The utility model relates to a lifting platform, comprising an outer frame which is arranged on a base and has an opening at the upper end, and a lifting platform, the lifting platform comprising a lower frame which has an opening at the upper end and a platform plate hinged to one side of the lower frame, a support plate is arranged inside the outer frame, two groups of parallel first connecting rods are hinged on the support plate, two groups of parallel second connecting rods are hinged at the bottom of the lifting platform, the first connecting rod and the second connecting rod are hinged through a hinge shaft, a sleeve is rotatably arranged on the hinge shaft, the sleeve is connected to one end of an electric telescopic rod, the other end of the electric telescopic rod is hinged to the support plate, the hinge shaft is driven to move by the extension of the electric telescopic rod, and then the two groups of first connecting rods and second connecting rods are synchronously driven to rotate, so that the overall height of the first connecting rod and the second connecting rod changes to lift the lifting platform, at this time the lifting platform has two symmetrical supporting force points, which not only ensures the stability of the lifting platform during lifting, but also improves the force strength of the lifting platform, thereby ensuring the stability of the lifting platform.

Description

Technical Field

[0001] The utility model relates to the technical field of lecture platforms, in particular to a lifting lecture platform. Background Art

[0002] Podiums are generally used in government, business, schools, hotels, conference halls, classrooms, churches and other occasions. Existing podiums can usually be adjusted according to the height of the speaker, so that the speaker can coordinate with the height of the podium.

[0003] For example, a Chinese patent document with patent application number "CN206822316U" discloses a hand-cranked mobile lifting platform, which is composed of a lifting mechanism composed of an outer column of the lift, an inner resistance of the lift, and a screw rod of the lift, and then the height of the platform table is adjusted by driving the turntable to rotate and the lifting mechanism to move up and down through a fixed handle. In this way, manual adjustment is required, and the manual turntable is set inside the platform, which is inconvenient and laborious to operate. Moreover, the support of the platform only relies on the inner column of the lift, and its support strength is low. The force points are concentrated at the connection points of the inner column of the lift, and the lifting stability of the platform is not good.

[0004] A Chinese patent document with patent application number "CN210169333U" discloses a lifting platform, which is connected to the lower wall of the platform through the output end of the electric push rod motor, and the upper end of the guide sleeve is connected to the edge of the lower surface of the platform, and is sleeved on the motor sleeve with a gap in between. At this time, the platform is only supported by the output end of the electric push rod motor, and its force points are concentrated at the output end of the electric push rod motor. Its supporting strength is low and the stability of the platform is poor. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a lifting lecture platform that can be lifted and lowered in parallel, solving the problem of poor stability in the prior art of direct lifting only by electric cylinders or columns.

[0006] The utility model provides a lifting lecture platform to solve the above technical problems, including an outer frame and a lifting platform which are arranged on a base and have an opening at the upper end. The lifting platform includes a lower frame body with an opening at the upper end and a platform plate hinged to one side of the lower frame body. A lateral groove is provided on the lower side of the outer frame, and a baffle is provided on the upper side of the lateral groove. A support plate located on the inner side of the baffle is provided in the outer frame. The support plate, the baffle and the outer frame are surrounded to form an accommodating cavity for accommodating the lower frame body. Two groups of parallel first connecting rods are hinged on the support plate, and two groups of parallel second connecting rods are hinged on the bottom of the lifting platform. The free ends of the first connecting rod and the second connecting rod are hinged through a hinge shaft, and the facing ends of the two hinge shafts are connected and fixed. A sleeve is rotatably sleeved on the hinge shaft, and the sleeve is connected to one end of an electric telescopic rod, and the other end of the electric telescopic rod is hinged to the support plate. A reinforcing support member is also provided between the two ends of the hinge shaft and the support plate.

[0007] Furthermore, the reinforcing support member comprises a guide cylinder hinged to the support plate, a guide rod is slidably provided in the guide cylinder, and the other end of the guide rod is hinged to the hinge shaft.

[0008] Furthermore, two groups of the first connecting rods and the second connecting rods are symmetrically distributed along the axis of the lifting platform.

[0009] Furthermore, a vertical guide groove is provided on the inner wall of the outer frame, and a guide strip cooperating with the vertical guide groove is provided on the outer wall of the lower frame.

[0010] Furthermore, a first mounting groove is provided at the upper edge of the lower frame, a first magnetic component is provided in the first mounting groove, a second mounting groove is provided at the bottom of the table, and a second magnetic component cooperating with the first magnetic component is provided in the second mounting groove.

[0011] Furthermore, a limiting strip is provided on the top peripheral wall of the lower frame body, and a limiting step cooperating with the limiting strip is provided on the top edge of the outer frame, and the height of the limiting strip is higher than the height of the limiting step.

[0012] The beneficial effects of adopting the utility model are as follows: the outer frame supports the lifting platform and the first connecting rod and the second connecting rod. The lower side of the outer frame is provided with a lateral slot, which can be used as a storage space for placing other presentation materials. A baffle is provided on the upper side of the outer frame, and a support plate located inside the baffle is provided inside the outer frame. The support plate, the baffle and the outer frame are enclosed to form a receiving cavity for receiving the lower frame. When the lifting platform is not raised, the lower frame of the lifting platform is located in the receiving cavity, and the table top is located on the outer frame. The receiving cavity serves to store the lower frame of the lifting platform. The table top is hinged to one side of the lower frame of the lifting platform so that the table top can be opened relative to the lower frame, and the interior of the lower frame can be used as a storage cavity. Two sets of parallel first connecting rods are hinged on the support plate, and two sets of parallel second connecting rods are hinged on the bottom of the lifting platform. The free ends of the first connecting rod and the second connecting rod are hinged through a hinge shaft, and the facing ends of the two hinge shafts are connected and fixed to form a whole; a sleeve is rotatably sleeved on the hinge shaft, and the sleeve is connected to one end of the electric telescopic rod, and the other end of the electric telescopic rod is hinged to the support plate, so that when the electric telescopic rod is extended or retracted, the sleeve rotates relative to the hinge shaft and pulls the hinge shaft to move, and the hinge shaft drives the two sets of first connecting rods and the second connecting rods to rotate synchronously around the hinge shaft, so that the first connecting rod and the second connecting rod can be connected to each other. The angle between the connecting rods increases or decreases, so that the overall height of the first connecting rod and the second connecting rod is reduced or increased, and then the two groups of first connecting rods and second connecting rods synchronously support the lifting platform to make it rise or fall, thereby ensuring the stability of the lifting platform during lifting and lowering, reducing the possibility of the lifting platform being tilted, and enabling the lifting podium to match the rise of the speaker. At this time, the two groups of first connecting rods and second connecting rods support the lifting platform, increase the support force points of the lifting platform, increase the force strength of the lifting platform, improve the support effect of the lifting platform, and ensure the stability of the lifting podium.

[0013] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the hinge shaft of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the lifting platform of the utility model.

[0017] In the accompanying drawings: 1-base, 2-outer frame, 21-lateral slot, 22-baffle, 23-support plate, 24-vertical guide groove, 25-limiting step, 3-lifting platform, 31-lower frame, 311-guide bar, 312-first mounting groove, 313-first magnetic part, 314-limiting bar, 32-table, 321-second mounting groove, 322-second magnetic part, 41-first connecting rod, 42-second connecting rod, 43-hinge shaft, 44-sleeve, 45-electric telescopic rod, 46-reinforced support, 461-guide cylinder, 462-guide rod. DETAILED DESCRIPTION

[0018] With reference to the accompanying drawings, specific embodiments of the present invention will be described in detail.

[0019] Reference Figures 1 to 3 The utility model provides a lifting lecture platform, including an outer frame 2 with an upper end opened on a base 1 and a lifting platform 3, wherein the lifting platform 3 includes a lower frame 31 with an upper end opened and a platform 32 hinged to one side of the lower frame 31, and a lateral slot 21 is provided on the lower side of the outer frame 2, and the lateral slot 21 can be used as a storage space to store lecture materials. Furthermore, a partition plate can be provided in the lateral slot 21 to partition the internal space of the lateral slot 21, so as to facilitate the storage of materials.

[0020] A baffle plate 22 is provided on the upper side of the lateral slot 21, and a support plate 23 located inside the baffle plate 22 is provided inside the outer frame 2. The support plate 23, the baffle plate 22 and the outer frame 2 enclose a receiving cavity for receiving the lower frame 31. When the lower frame 31 is located in the receiving cavity, the table 32 is located on the outer frame 2. Further, a limiting strip 314 is provided on the top peripheral wall of the lower frame 31, and a limiting step 25 cooperating with the limiting strip 314 is provided on the top edge of the outer frame 2. The height of the limiting strip 314 is higher than the height of the limiting step 25. The limiting strip 314 cooperates with the limiting step 25 to limit the descending height of the lifting platform 3, and the height of the limiting strip 314 is higher than the height of the limiting step 25, so that the table 32 never contacts the top of the outer frame 2, and prevents the outer frame 2 from lifting the table 32 and separating from the lower frame 31. In order to increase the stability between the lower frame 31 and the table 32, a first mounting groove 312 is provided at the upper edge of the lower frame 31, and a first magnetic part 313 is provided in the first mounting groove 312. A second mounting groove 321 is provided at the bottom of the table 32, and a second magnetic part 322 cooperating with the first magnetic part 313 is provided in the second mounting groove 321. The first magnetic part 313 cooperates with the second magnetic part 322 to enable the table 32 to be sucked onto the lower frame 31 to seal the interior of the lower frame 31, and also to prevent the table 32 from shaking, thereby improving stability.

[0021] The inner wall of the outer frame 2 is provided with a vertical guide groove 24, and the outer wall of the lower frame 31 is provided with a guide bar 311 that cooperates with the vertical guide groove 24. The cooperation between the vertical guide groove 24 and the guide bar 311 guides the lifting of the lifting platform 3, further improving the lifting stability of the lifting platform 3.

[0022] Two sets of parallel first connecting rods 41 are hinged on the support plate 23, and two sets of parallel second connecting rods 42 are hinged on the bottom of the lifting platform 3. Preferably, the two sets of first connecting rods 41 and second connecting rods 42 are symmetrically distributed along the axis of the lifting platform 3, so that the supporting force on the lifting platform 3 can be uniform, further ensuring the lifting stability of the lifting platform 3. The free ends of the first connecting rod 41 and the second connecting rod 42 are hinged by a hinge shaft 43, and the facing ends of the two hinge shafts 43 are connected and fixed. Preferably, the two hinge shafts 43 are integrally formed. A sleeve 44 is rotatably sleeved on the hinge shaft 43, and the sleeve 44 is connected to one end of an electric telescopic rod 45, and the other end of the electric telescopic rod 45 is hinged to the support plate 23. The hinge point of the electric telescopic rod 45 and the hinge point of the first connecting rod 41 are respectively arranged on both sides of the support plate 23, so as to reserve a larger activity space for the first connecting rod 41 and the second connecting rod 42, and improve the lifting height of the lifting platform 3. When the electric telescopic rod 45 is extended, the sleeve 44 rotates relative to the hinge shaft 43 and pushes the hinge shaft 43 to move away from the support plate 23, and the overall height of the first connecting rod 41 and the second connecting rod 42 increases, thereby driving the lifting platform 3 to rise; when the electric telescopic rod 45 is retracted, it pulls the hinge shaft 43 to move toward the support plate 23, and the overall height of the first connecting rod 41 and the second connecting rod 42 decreases, thereby driving the lifting platform 3 to descend.

[0023] A reinforcing support member 46 is further provided between the two ends of the hinge shaft 43 and the support plate 23, which can guide and support the movement of the hinge shaft 43 while improving the structural stability of the first connecting rod 41, the second connecting rod 42 and the hinge shaft 43, thereby further improving the stability of the lifting platform 3. Specifically, the reinforcing support member 46 includes a guide cylinder 461 hinged to the support plate 23, a guide rod 462 is slidably provided in the guide cylinder 461, and the other end of the guide rod 462 is hinged to the hinge shaft 43. During the movement of the hinge shaft 43, the guide rod 462 extends from or retracts into the guide cylinder 461.

[0024] In summary, the utility model ensures the stability of the lifting platform 3 during lifting and lowering by arranging the first connecting rod 41, the second connecting rod 42, the hinge shaft 43, and the electric telescopic rod 45, reduces the possibility of the lifting platform 3 being tilted, and enables the lifting platform to match the rise of the speaker. At this time, the two groups of first connecting rods 41 and second connecting rods 42 support the lifting platform 3, increase the support force points of the lifting platform 3, increase the force strength of the lifting platform 3, improve the support effect of the lifting platform 3, and ensure the stability of the lifting platform.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lifting podium, characterized in that: The invention comprises an outer frame (2) which is arranged on a base (1) and has an opening at the upper end, and a lifting platform (3); the lifting platform (3) comprises a lower frame (31) which has an opening at the upper end, and a platform (32) which is hinged to one side of the lower frame (31); a lateral slot (21) is provided on the lower side of the outer frame (2); a baffle (22) is provided on the upper side of the lateral slot (21); a support plate (23) which is located on the inner side of the baffle (22) is provided inside the outer frame (2); a receiving cavity for receiving the lower frame (31) is formed by the support plate (23), the baffle (22) and the outer frame (2); Two sets of parallel first connecting rods (41) are hinged on the support plate (23), and two sets of parallel second connecting rods (42) are hinged on the bottom of the lifting platform (3). The free ends of the first connecting rod (41) and the second connecting rod (42) are hinged through a hinge shaft (43), and the facing ends of the two hinge shafts (43) are connected and fixed. A sleeve (44) is rotatably sleeved on the hinge shaft (43), the sleeve (44) is connected to one end of an electric telescopic rod (45), the other end of the electric telescopic rod (45) is hinged to the support plate (23), and a reinforcing support member (46) is further provided between the two end portions of the hinge shaft (43) and the support plate (23).

2. The lifting platform according to claim 1, characterized in that: The reinforcing support member (46) comprises a guide cylinder (461) hinged to the support plate (23), a guide rod (462) is slidably arranged inside the guide cylinder (461), and the other end of the guide rod (462) is hinged to the hinge shaft (43).

3. The lifting platform according to claim 1, characterized in that: The two groups of the first connecting rods (41) and the second connecting rods (42) are symmetrically distributed along the axis of the lifting platform (3).

4. The lifting platform according to claim 1, characterized in that: A vertical guide groove (24) is provided on the inner wall of the outer frame (2), and a guide strip (311) matching the vertical guide groove (24) is provided on the outer wall of the lower frame body (31).

5. The lifting platform according to claim 1, characterized in that: A first mounting groove (312) is provided at the upper edge of the lower frame (31), a first magnetic component (313) is provided in the first mounting groove (312), a second mounting groove (321) is provided at the bottom of the platform (32), and a second magnetic component (322) matching the first magnetic component (313) is provided in the second mounting groove (321).

6. The lifting platform according to claim 1, characterized in that: A limiting strip (314) is provided on the top peripheral wall of the lower frame (31), and a limiting step (25) cooperating with the limiting strip (314) is provided on the top edge of the outer frame (2), wherein the height of the limiting strip (314) is higher than the height of the limiting step (25).

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